[PM/AA] Rebuild LLVM's alias analysis infrastructure in a way compatible with the new pass manager, and no longer relying on analysis groups.

[chandlerc]

Summary

NOTE: This is a WIP patch. There are still failing and crashing tests, but this is a massive patch so I wanted to go ahead and start the review.

This builds essentially a ground-up new AA infrastructure stack for
LLVM. The core ideas are the same that are used throughout the new pass
manager: type erased polymorphism and direct composition. The design is
as follows:

• FunctionAAResults is a type-erasing alias analysis results aggregation interface to walk a single query across a range of results from different alias analyses. Currently this is function-specific as we always assume that aliasing queries are *within* a function.

• AAResultBase is a CRTP utility providing stub implementations of various parts of the alias analysis result concept, notably in several cases in terms of other more general parts of the interface. This can be used to implement only a narrow part of the interface rather than the entire interface. This isn't really ideal, this logic should be hoisted into FunctionAAResults as currently it will cause a significant amount of redundant work, but it faithfully models the behavior of the prior infrastructure.

• All the alias analysis passes are ported to be wrapper passes for the legacy PM and new-style analysis passes for the new PM with a shared result object. In some cases (most notably CFL), this is an extremely naive approach that we should revisit when we can specialize for the new pass manager.

• BasicAA has been restructured to reflect that it is much more fundamentally a function analysis because it uses dominator trees and loop info that need to be constructed for each function.

All of the references to getting alias analysis results have been
updated to use the new aggregation interface. All the preservation and
other pass management code has been updated accordingly.

The way the FunctionAAResultsWrapperPass works is to detect the
available alias analyses when run, and add them to the results object.
This means that we should be able to continue to respect when various
passes are added to the pipeline, for example adding CFL or adding TBAA
passes should just cause their results to be available and to get folded
into this. The exception to this rule is BasicAA which really needs to
be a function pass due to using dominator trees and loop info. As
a consequence, the FunctionAAResultsWrapperPass directly depends on
BasicAA and always includes it in the aggregation.

This has significant implications for preserving analyses. Generally,
most passes shouldn't both preserving FunctionAAResultsWrapperPass
because rebuilding the results just updates the set of known AA passes.
The exception to this rule are LoopPass instances which need to preserve
all the function analyses that the loop pass manager will end up
needing. This means preserving both BasicAAWrapperPass and the
aggregating FunctionAAResultsWrapperPass.

Now, when preserving an alias analysis, you do so by directly preserving
that analysis. This is only necessary for non-immutable-pass-provided
alias analyses though, and there are only three: BasicAA, GlobalsAA
(formerly GlobalsModRef), and SCEVAA. Usually BasicAA is preserved when
needed because it (like DominatorTree and LoopInfo) is marked as
a CFG-only pass. I've expanded GlobalsAA into the preserved set
everywhere we previously were preserving all of AliasAnalysis, and I'll
be adding SCEVAA in the intersection of that with where we preserve SCEV
itself.

One significant challenge to all of this is that the CGSCC passes were
actually using the alias analysis implementations by taking advantage of
a pretty amazing set of loop holes in the old pass manager's analysis
management code which allowed analysis groups to slide through in many
cases. Moving away from analysis groups makes this problem much more
obvious. To fix it, I've leveraged the flexibility the design of the new
PM components provides to just directly construct the relevant alias
analyses for the relevant functions in the IPO passes that need them.
This is a bit hacky, but should go away with the new pass manager, and
is already in many ways cleaner than the prior state.

Another significant challenge is that various facilities of the old
alias analysis infrastructure just don't fit any more. The most
significant of these is the alias analysis 'counter' pass. That pass
relied on the ability to snoop on AA queries at different points in the
analysis group chain. Instead, I've built printing functionality
directly into the aggregation layer.

Depends on D12075

[chandlerc]

Update with clang-format fixes.

[chandlerc]

Complete all of the porting, wire up all the pass preservation semantics, fix
all of the test cases, etc. Also rebase onto top-of-tree which includes several
fixes needed to get the AA stuff working.

This patch now passes all tests and could be landed. The only substantial
feature (that I'm aware of) missing is a repalcement for AliasAnalysisCounter.
I'd like to do that in a follow-up patch as no tests actually need it.

Please review! (Seriously, the sooner the better, this thing is a nightmare to
rebase...)

[chandlerc]

Now without random files that should never have been in the patch.

[hfinkel]

include/llvm/Analysis/AliasAnalysis.h

163 ↗

(On Diff #32499)

Which version of MSVC? I'd like that recorded if possible so that when we eventually drop support for that version we can remove the workarounds.

lib/Analysis/AliasAnalysis.cpp

402 ↗

(On Diff #32499)

This design means that we cannot add new AA passes, nor change their order via the pass-manager interface, because it is really hard-coded here for a closed universe of AA passes. Is this really necessary? I'd prefer we have some kind of registration interface.

lib/Analysis/BasicAliasAnalysis.cpp

603 ↗

(On Diff #32499)

What is this doing? (when would we not have an FAR?

777 ↗

(On Diff #32499)

Why is it not an assert? It just returns MayAlias otherwise regardless.

813 ↗

(On Diff #32499)

Same here.

863 ↗

(On Diff #32499)

Same here.

lib/Transforms/InstCombine/InstructionCombining.cpp

3080 ↗

(On Diff #32499)

Why is this here specifically?

3106 ↗

(On Diff #32499)

Do you also need?

INITIALIZE_PASS_DEPENDENCY(GlobalsAAWrapperPass)

since you added it as required above?

lib/Transforms/Scalar/Float2Int.cpp

65 ↗

(On Diff #32499)

I don't understand why you've added this to some passes and not others.

lib/Transforms/Scalar/GVN.cpp

742 ↗

(On Diff #32499)

Same question here about GlobalsAAWrapperPass and the INITIALIZE_* macro.

lib/Transforms/Scalar/LICM.cpp

127 ↗

(On Diff #32499)

I understand that SCEVAA needs to be added, because of the LPM invalidation restrictions, but why is GlobalsAAWrapperPass here and not in IndVarSimplify?

[chandlerc]

include/llvm/Analysis/AliasAnalysis.h

163 ↗

(On Diff #32499)

We don't do this elsewhere. This comment is essentially verbatim from everywhere else we've commented this. We can go and update all of them, but please not in this patch.

lib/Analysis/AliasAnalysis.cpp

402 ↗

(On Diff #32499)

First off, I feel like you're missing a key point in the design.

The *infrastructure* here doesn't hardcode anything. It is only the "factory" that we use with the legacy pass manager that hard codes a list of the AAs. The reason is because it is expedient. I'm really uninterested in building complex registration facilities for the legacy pass manager, especially as it is *exactly* such a registration facility (and all of its bugs, limitations and problems) that I'm removing with this patch. =/

I've also arranged for it to be OK to add experimental, disabled, and otherwise unused AAs here so we can still experiment and develop things in-tree.

The new pass manager will be able to use all this infrastructure to build a custom set of alias analyses easily. We will still probably "hard code" a list *somewhere*, but it will be much higher up the stack in the Passes library. And there, rather than actually hard coding the list, my plan was to parse the list out of the command line.

The core idea of having a single place that *specifically* spells out what alias analyses are used and exactly what order was actually a design point that I discussed with several folks, yourself included, and I thought was an explicit desire. Personally, I find using a registration system to establish the layering of alias analyses extremely brittle and confusing.

lib/Analysis/BasicAliasAnalysis.cpp

603 ↗

(On Diff #32499)

You can create a BasicAAResults object without using the FunctionAAResults aggregation layer. I didn't want to bake the cycle into the entire implementation. I can go back and do that if you think it's the right thing, but it makes this not *really* an analysis pass any longer, which I find very unfortunate.

777 ↗

(On Diff #32499)

I really didn't want to be adding asserts that might crash in the wild and might make a well over 100 file patch get reverted. ;]

813 ↗

(On Diff #32499)

Same answer.

863 ↗

(On Diff #32499)

And same answer.

lib/Transforms/InstCombine/InstructionCombining.cpp

3080 ↗

(On Diff #32499)

I explained this in my summary: everywhere we previously were preserving the analysis group I have added preservation of globals-aa to preserve behavior prior to my patch.

3106 ↗

(On Diff #32499)

Yes, good catch. I've added it.

lib/Transforms/Scalar/Float2Int.cpp

65 ↗

(On Diff #32499)

As I explained in the summary (i think?) I've added it everywhere that previously preserved AliasAnalysis.

Note that it *seems* to have been removed from some, but those are MachineFunctionPasses and I added the preservation to the common logic for all of those.

I've checked, and I *think* I got this right, but if there is an inconsistency there, let me know.

lib/Transforms/Scalar/GVN.cpp

742 ↗

(On Diff #32499)

Done here as well.

lib/Transforms/Scalar/LICM.cpp

127 ↗

(On Diff #32499)

Because IndVarSimplify did not historically preserve AliasAnalysis and so preserving GlobalsAAWrapperPass would change behavior.

I think every function pass can preserve GlobalsAAWrapperPass after my changes to make it more conservative, but I've tried very hard to change is little functionality as conceivably possible with this patch.

Preserving SCEVAA above is actually a bug, and I've removed it.

[chandlerc]

Update rebasing to head and addressing a few bugs spotted by Hal in review.

[hfinkel]

include/llvm/Analysis/AliasAnalysis.h

163 ↗

(On Diff #32499)

We don't do this elsewhere.

Well, that's a mistake, but I'm fine with consistency. Let's update the comments in a separate change.

lib/Analysis/AliasAnalysis.cpp

402 ↗

(On Diff #32499)

Okay; this is fine. But, please add a comment to this function (and something in getAnalysisUsage) explaining that this fixed list/ordering is relevant only for the legacy pass manager.

lib/Analysis/BasicAliasAnalysis.cpp

603 ↗

(On Diff #32499)

Okay, please add a comment explaining this. The key question is this: If I were looking at this code in order to write new code in BasicAAResult, or in some other *AAResult class, would I need to do this?

777 ↗

(On Diff #32499)

Okay ;)

lib/Transforms/InstCombine/InstructionCombining.cpp

3106 ↗

(On Diff #32499)

Please check them all; I stopped commenting on them at some point.

lib/Transforms/Scalar/LICM.cpp

127 ↗

(On Diff #32518)

Preserving SCEVAA above is actually a bug, and I've removed it.

Why was it a bug? We preserve SCEV here, and we also used to preserve the AA group.

lib/Transforms/Scalar/LoopDeletion.cpp

71 ↗

(On Diff #32518)

Do you need an INITIALIZE_ for SCEVAA here?

[chandlerc]

lib/Analysis/BasicAliasAnalysis.cpp

603 ↗

(On Diff #32518)

I've added the comment to getFunctionAAResults in AAResultBase so that hopefully it is a bit more discoverable than this. Let me know if that comment isn't sufficient.

lib/Transforms/Scalar/LICM.cpp

127 ↗

(On Diff #32518)

We should (and do) preserve SCEVAA *here*. This is in LICM that preserved both AliasAnalysis and ScalarEvolution before.

We shouldn't preserve (and now don't) SCEVAA *above* as part of IndVarSimplify because that pass *did not* preserve AliasAnalysis previously.

I had let a large number of erroneous additional preservation of SCEVAA in. I've fixed all of it and made everything much more consistent now. Sorry for the noise there.

[chandlerc]

Address more feedback from Hal, and notably make the preservation of SCEVAA
much more conservative for this iteration.

[chandlerc]

Rebase as the prerequisite patches have landed. Also fix a build break.

[chandlerc]

Renamed everything to use a shorter name (AAResults and co.).

This reflects that this isn't really about a *function* AA, its about an
intra-procedural AA which is thoe only way we know how to formulate AA right
now in LLVM. If we ever grow a truly inter-procedural AA, it'll like need
a very different interface (that we can't predict today).

[chandlerc]

Ping.

[chandlerc]

Rebase.

[hfinkel]

lib/Analysis/BasicAliasAnalysis.cpp

603 ↗

(On Diff #33186)

That comment is good, but let me clarify something: Is this the general pattern necessary for recursion in AA? Specifically, if there is an aggregation object, then recurse through the aggregation object so the entire chain participates, otherwise, just recurse directly? If this is the general pattern, then we should add it as a utility function and not repeat it everywhere it might be necessary. In short, what to do when one AA can reduce an aliasing query to another one on some underlying pointers should be something that is clear within the interface.

1237 ↗

(On Diff #32499)

Shouldn't this, for example, also use the same potential-aggregator recursion pattern?

[chandlerc]

lib/Analysis/BasicAliasAnalysis.cpp

603 ↗

(On Diff #33186)

Any suggestions about *how* to factor this out? I tried to come up with a way, and it involved horrible templates and pointers-to-members or std::bind craziness. I'll try again myself...

1237–1238 ↗

(On Diff #33186)

I really don't know... The old code had different fallback strategies and it wasn't always clear to me whether they would fully recurse or partially recurse, etc.

In particular, does this inf-loop? Anyways, I'll try to make this more rigorous. I need to find out if it would infloop and the old code was trying to delegate to the *other* AAs by doing this, and if so, have it return MayAlias.

[hfinkel]

lib/Analysis/BasicAliasAnalysis.cpp

603 ↗

(On Diff #33186)

Maybe just type out the functions? I've always found this pattern difficult to template (as you point out, you can do it with pointers-to-members, etc., but the number of tokens in the template glue relative to the underlying logic might be quite large).

My concern is not that that the if statement is a lot of code to copy-and-paste, but that because code might appear functional without it (by just hard coding a direct recursion within the pass), it could easily be forgotten unless it is somehow builtin to the interface that the existing implementations all use.

1237–1238 ↗

(On Diff #33186)

As far as I can tell, in the old system, calling the base class here (AliasAnalysis::alias), would cause the query to continue up the chain with the new pointers (in this case, likely the same as the original pointers, except perhaps with casts stripped).

So maybe I'm confused about what this code does, but it looks like AAResultBase::alias just returns MayAlias, and that does not match the old behavior.

[chandlerc]

Update to use a proxy to handle the delegation to either self or an aggregation
of AA results.

Also, rebase and fix up the edits that have come in to basic-aa while the patch
has been out for review.

[chandlerc]

Hopefully we're really close at this point? I think I've gotten everything addressed here.

lib/Analysis/BasicAliasAnalysis.cpp

675 ↗

(On Diff #33723)

I've built a tiny proxy class to model this and now we get the proxy class and call through it. This kept the interface consistent but hides the delegation logic as suggested. I can add comments there if you have anywhere you think they would help clarify.

1346–1348 ↗

(On Diff #33723)

So, I'm now pretty sure that this does match the old behavior.

Returning MayAlias here causes the AAResults aggregation layer to continue to the next result it has available, and query that layer. So in essence, returning MayAlias triggers the expected behavior.

There is one difference here, but it shouldn't be observable. In the old system, BasicAA's cache ended up populated by the results provided from querying other AAs. With my change, we will just cache "MayAlias" and then directly query the next layer. In essence, this change may cause us to query more layers of the AA stack, but I would not expect that to change behavior or to be a significant compile time shift as all the other layers are much faster than BasicAA already.

Does this make more sense?

I would still like to take the caching out of BasicAA and teach the aggregation layer to do all the caching, which would recover the compile time performance (and get more performance as well) but I think that should be in a follow-up patch.

[hfinkel]

lib/Analysis/BasicAliasAnalysis.cpp

675 ↗

(On Diff #33723)

Looks good.

1346–1348 ↗

(On Diff #33723)

So, I'm now pretty sure that this does match the old behavior.

Returning MayAlias here causes the AAResults aggregation layer to continue to the next result it has available, and query that layer. So in essence, returning MayAlias triggers the expected behavior.

There is one difference here, but it shouldn't be observable. In the old system, BasicAA's cache ended up populated by the results provided from querying other AAs. With my change, we will just cache "MayAlias" and then directly query the next layer. In essence, this change may cause us to query more layers of the AA stack, but I would not expect that to change behavior or to be a significant compile time shift as all the other layers are much faster than BasicAA already.

Does this make more sense?

I think I understand what you're saying, but I'm not convinced that this is correct. This is the mechanism that BasicAA uses to do recursive analysis, including based on other passes. So let's say that we have both BasicAA and CFLAA. Given some query on two GEPs, BasicAA might be able to reduce that query to some query on the base pointers of those GEPs, and then recurse up the chain allowing CFLAA to determine that the base pointers don't alias. Thus, both BasicAA and CFLAA can work together on the query, producing an answer neither would have been able to produce alone.

It seems important to keep the system's ability to function this way.

I would still like to take the caching out of BasicAA and teach the aggregation layer to do all the caching, which would recover the compile time performance (and get more performance as well) but I think that should be in a follow-up patch.

Yes, but you'd also need to be careful about the optimistic phi-based analysis that rely on the caching for correctness (to prevent infinite recursion).

[chandlerc]

Update to a fresh baseline, and add logic to recurse back through the entire
set of AA results within BasicAA. This should more accurately follow the
original logic of the analysis group implementation.

[chandlerc]

At last updated. Please let me know if there are any comments that you still want a reply to, I've somewhat lost track at this point.

lib/Analysis/BasicAliasAnalysis.cpp

1346–1348 ↗

(On Diff #33723)

After entirely too much debugging considering the simplicity of the change, I've done this.

I don't think it matters at all though. I'll go back to my original claim -- this doesn't matter. Note that we don't recurse with O1 and O2 here which are the result of GetUnderlyingObject, and in fact we can't as that would invalidate the sizes. We recurse on V1 and V2. The only effect this has is to recurse after stripping pointer casts, which I would expect any AA pass to do itself... But perhaps they do not. Anyways, I think this faithfully achieves what you were looking for here. Let me know what you think.

[hfinkel]

lib/Analysis/BasicAliasAnalysis.cpp

1346–1348 ↗

(On Diff #33723)

It matters because aliasCheck is also called from aliasGEP, aliasSelect and aliasPHI in order to recurse on underlying pointers as determined by those functions. As you say, at the top level, it has indeed only stripped casts, but that's not the important case.

In any case, let's see where this takes us... LGTM. Thanks for all of your work on this!

llvm/trunk/examples/Kaleidoscope/Chapter4/toy.cpp

 #include "llvm/ADT/STLExtras.h"
-#include "llvm/Analysis/BasicAliasAnalysis.h"
 #include "llvm/Analysis/Passes.h"
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/Verifier.h"
 #include "llvm/Support/TargetSelect.h"
 #include "llvm/Transforms/Scalar.h"

 static void InitializeModuleAndPassManager() {
   // Open a new module.
   TheModule = llvm::make_unique<Module>("my cool jit", getGlobalContext());
   TheModule->setDataLayout(TheJIT->getTargetMachine().createDataLayout());
 
   // Create a new pass manager attached to it.
   TheFPM = llvm::make_unique<legacy::FunctionPassManager>(TheModule.get());
 
-  // Provide basic AliasAnalysis support for GVN.
-  TheFPM->add(createBasicAliasAnalysisPass());
   // Do simple "peephole" optimizations and bit-twiddling optzns.
   TheFPM->add(createInstructionCombiningPass());
   // Reassociate expressions.
   TheFPM->add(createReassociatePass());
   // Eliminate Common SubExpressions.
   TheFPM->add(createGVNPass());
   // Simplify the control flow graph (deleting unreachable blocks, etc).
   TheFPM->add(createCFGSimplificationPass());

llvm/trunk/examples/Kaleidoscope/Chapter5/toy.cpp

 #include "llvm/ADT/STLExtras.h"
-#include "llvm/Analysis/BasicAliasAnalysis.h"
 #include "llvm/Analysis/Passes.h"
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/Verifier.h"
 #include "llvm/Support/TargetSelect.h"
 #include "llvm/Transforms/Scalar.h"

 static void InitializeModuleAndPassManager() {
   // Open a new module.
   TheModule = llvm::make_unique<Module>("my cool jit", getGlobalContext());
   TheModule->setDataLayout(TheJIT->getTargetMachine().createDataLayout());
 
   // Create a new pass manager attached to it.
   TheFPM = llvm::make_unique<legacy::FunctionPassManager>(TheModule.get());
 
-  // Provide basic AliasAnalysis support for GVN.
-  TheFPM->add(createBasicAliasAnalysisPass());
   // Do simple "peephole" optimizations and bit-twiddling optzns.
   TheFPM->add(createInstructionCombiningPass());
   // Reassociate expressions.
   TheFPM->add(createReassociatePass());
   // Eliminate Common SubExpressions.
   TheFPM->add(createGVNPass());
   // Simplify the control flow graph (deleting unreachable blocks, etc).
   TheFPM->add(createCFGSimplificationPass());

llvm/trunk/examples/Kaleidoscope/Chapter6/toy.cpp

 #include "llvm/ADT/STLExtras.h"
-#include "llvm/Analysis/BasicAliasAnalysis.h"
 #include "llvm/Analysis/Passes.h"
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/Verifier.h"
 #include "llvm/Support/TargetSelect.h"
 #include "llvm/Transforms/Scalar.h"

 static void InitializeModuleAndPassManager() {
   // Open a new module.
   TheModule = llvm::make_unique<Module>("my cool jit", getGlobalContext());
   TheModule->setDataLayout(TheJIT->getTargetMachine().createDataLayout());
 
   // Create a new pass manager attached to it.
   TheFPM = llvm::make_unique<legacy::FunctionPassManager>(TheModule.get());
 
-  // Provide basic AliasAnalysis support for GVN.
-  TheFPM->add(createBasicAliasAnalysisPass());
   // Do simple "peephole" optimizations and bit-twiddling optzns.
   TheFPM->add(createInstructionCombiningPass());
   // Reassociate expressions.
   TheFPM->add(createReassociatePass());
   // Eliminate Common SubExpressions.
   TheFPM->add(createGVNPass());
   // Simplify the control flow graph (deleting unreachable blocks, etc).
   TheFPM->add(createCFGSimplificationPass());

llvm/trunk/examples/Kaleidoscope/Chapter7/toy.cpp

 #include "llvm/ADT/STLExtras.h"
-#include "llvm/Analysis/BasicAliasAnalysis.h"
 #include "llvm/Analysis/Passes.h"
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/LegacyPassManager.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/Verifier.h"
 #include "llvm/Support/TargetSelect.h"
 #include "llvm/Transforms/Scalar.h"

 static void InitializeModuleAndPassManager() {
   // Open a new module.
   TheModule = llvm::make_unique<Module>("my cool jit", getGlobalContext());
   TheModule->setDataLayout(TheJIT->getTargetMachine().createDataLayout());
 
   // Create a new pass manager attached to it.
   TheFPM = llvm::make_unique<legacy::FunctionPassManager>(TheModule.get());
 
-  // Provide basic AliasAnalysis support for GVN.
-  TheFPM->add(createBasicAliasAnalysisPass());
   // Do simple "peephole" optimizations and bit-twiddling optzns.
   TheFPM->add(createInstructionCombiningPass());
   // Reassociate expressions.
   TheFPM->add(createReassociatePass());
   // Eliminate Common SubExpressions.
   TheFPM->add(createGVNPass());
   // Simplify the control flow graph (deleting unreachable blocks, etc).
   TheFPM->add(createCFGSimplificationPass());

llvm/trunk/include/llvm/Analysis/AliasAnalysis.h

 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_ANALYSIS_ALIASANALYSIS_H
 #define LLVM_ANALYSIS_ALIASANALYSIS_H
 
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/IR/CallSite.h"
 #include "llvm/IR/Metadata.h"
+#include "llvm/IR/PassManager.h"
 #include "llvm/Analysis/MemoryLocation.h"
 
 namespace llvm {
-
+class BasicAAResult;
 class LoadInst;
 class StoreInst;
 class VAArgInst;
 class DataLayout;
 class TargetLibraryInfo;
 class Pass;
 class AnalysisUsage;
 class MemTransferInst;
enum FunctionModRefBehavior {
   /// This property corresponds to the IntrReadMem LLVM intrinsic flag.
   FMRB_OnlyReadsMemory = FMRL_Anywhere | MRI_Ref,
 
   /// This indicates that the function could not be classified into one of the
   /// behaviors above.
   FMRB_UnknownModRefBehavior = FMRL_Anywhere | MRI_ModRef
 };
 
-class AliasAnalysis {
-protected:
-  const DataLayout *DL;
-  const TargetLibraryInfo *TLI;
-
-private:
-  AliasAnalysis *AA;       // Previous Alias Analysis to chain to.
-
-protected:
-  /// InitializeAliasAnalysis - Subclasses must call this method to initialize
-  /// the AliasAnalysis interface before any other methods are called.  This is
-  /// typically called by the run* methods of these subclasses.  This may be
-  /// called multiple times.
-  ///
-  void InitializeAliasAnalysis(Pass *P, const DataLayout *DL);
-
-  /// getAnalysisUsage - All alias analysis implementations should invoke this
-  /// directly (using AliasAnalysis::getAnalysisUsage(AU)).
-  virtual void getAnalysisUsage(AnalysisUsage &AU) const;
-
+class AAResults {
 public:
-  static char ID; // Class identification, replacement for typeinfo
-  AliasAnalysis() : DL(nullptr), TLI(nullptr), AA(nullptr) {}
-  virtual ~AliasAnalysis();  // We want to be subclassed
-
-  /// getTargetLibraryInfo - Return a pointer to the current TargetLibraryInfo
-  /// object, or null if no TargetLibraryInfo object is available.
-  ///
-  const TargetLibraryInfo *getTargetLibraryInfo() const { return TLI; }
+  // Make these results default constructable and movable. We have to spell
+  // these out because MSVC won't synthesize them.
+  AAResults() {}
+  AAResults(AAResults &&Arg);
+  AAResults &operator=(AAResults &&Arg);
+  ~AAResults();
+
+  /// Register a specific AA result.
+  template <typename AAResultT> void addAAResult(AAResultT &AAResult) {
+    // FIXME: We should use a much lighter weight system than the usual
+    // polymorphic pattern because we don't own AAResult. It should
+    // ideally involve two pointers and no separate allocation.
+    AAs.emplace_back(new Model<AAResultT>(AAResult, *this));
+  }
 
   //===--------------------------------------------------------------------===//
   /// \name Alias Queries
   /// @{
 
   /// The main low level interface to the alias analysis implementation.
   /// Returns an AliasResult indicating whether the two pointers are aliased to
   /// each other. This is the interface that must be implemented by specific
   /// alias analysis implementations.
-  virtual AliasResult alias(const MemoryLocation &LocA,
-                            const MemoryLocation &LocB);
+  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB);
 
   /// A convenience wrapper around the primary \c alias interface.
   AliasResult alias(const Value *V1, uint64_t V1Size, const Value *V2,
                     uint64_t V2Size) {
     return alias(MemoryLocation(V1, V1Size), MemoryLocation(V2, V2Size));
   }
 
   /// A convenience wrapper around the primary \c alias interface.
public:
 
   /// A convenience wrapper around the \c isMustAlias helper interface.
   bool isMustAlias(const Value *V1, const Value *V2) {
     return alias(V1, 1, V2, 1) == MustAlias;
   }
 
   /// Checks whether the given location points to constant memory, or if
   /// \p OrLocal is true whether it points to a local alloca.
-  virtual bool pointsToConstantMemory(const MemoryLocation &Loc,
-                                      bool OrLocal = false);
+  bool pointsToConstantMemory(const MemoryLocation &Loc, bool OrLocal = false);
 
   /// A convenience wrapper around the primary \c pointsToConstantMemory
   /// interface.
   bool pointsToConstantMemory(const Value *P, bool OrLocal = false) {
     return pointsToConstantMemory(MemoryLocation(P), OrLocal);
   }
 
   /// @}
   //===--------------------------------------------------------------------===//
   /// \name Simple mod/ref information
   /// @{
 
   /// Get the ModRef info associated with a pointer argument of a callsite. The
   /// result's bits are set to indicate the allowed aliasing ModRef kinds. Note
   /// that these bits do not necessarily account for the overall behavior of
   /// the function, but rather only provide additional per-argument
   /// information.
-  virtual ModRefInfo getArgModRefInfo(ImmutableCallSite CS, unsigned ArgIdx);
+  ModRefInfo getArgModRefInfo(ImmutableCallSite CS, unsigned ArgIdx);
 
   /// Return the behavior of the given call site.
-  virtual FunctionModRefBehavior getModRefBehavior(ImmutableCallSite CS);
+  FunctionModRefBehavior getModRefBehavior(ImmutableCallSite CS);
 
   /// Return the behavior when calling the given function.
-  virtual FunctionModRefBehavior getModRefBehavior(const Function *F);
+  FunctionModRefBehavior getModRefBehavior(const Function *F);
 
   /// Checks if the specified call is known to never read or write memory.
   ///
   /// Note that if the call only reads from known-constant memory, it is also
   /// legal to return true. Also, calls that unwind the stack are legal for
   /// this predicate.
   ///
   /// Many optimizations (such as CSE and LICM) can be performed on such calls
public:
   /// read or write from objects pointed to be their pointer-typed arguments
   /// (with arbitrary offsets).
   static bool doesAccessArgPointees(FunctionModRefBehavior MRB) {
     return (MRB & MRI_ModRef) && (MRB & FMRL_ArgumentPointees);
   }
 
   /// getModRefInfo (for call sites) - Return information about whether
   /// a particular call site modifies or reads the specified memory location.
-  virtual ModRefInfo getModRefInfo(ImmutableCallSite CS,
-                                   const MemoryLocation &Loc);
+  ModRefInfo getModRefInfo(ImmutableCallSite CS, const MemoryLocation &Loc);
 
   /// getModRefInfo (for call sites) - A convenience wrapper.
   ModRefInfo getModRefInfo(ImmutableCallSite CS, const Value *P,
                            uint64_t Size) {
     return getModRefInfo(CS, MemoryLocation(P, Size));
   }
 
   /// getModRefInfo (for calls) - Return information about whether
public:
 
   /// Return information about whether a call and an instruction may refer to
   /// the same memory locations.
   ModRefInfo getModRefInfo(Instruction *I, ImmutableCallSite Call);
 
   /// Return information about whether two call sites may refer to the same set
   /// of memory locations. See the AA documentation for details:
   ///   http://llvm.org/docs/AliasAnalysis.html#ModRefInfo
-  virtual ModRefInfo getModRefInfo(ImmutableCallSite CS1,
-                                   ImmutableCallSite CS2);
+  ModRefInfo getModRefInfo(ImmutableCallSite CS1, ImmutableCallSite CS2);
 
   /// \brief Return information about whether a particular call site modifies
   /// or reads the specified memory location \p MemLoc before instruction \p I
   /// in a BasicBlock. A ordered basic block \p OBB can be used to speed up
   /// instruction ordering queries inside the BasicBlock containing \p I.
   ModRefInfo callCapturesBefore(const Instruction *I,
                                 const MemoryLocation &MemLoc, DominatorTree *DT,
                                 OrderedBasicBlock *OBB = nullptr);
bool canInstructionRangeModRef(const Instruction &I1, const Instruction &I2,
                                  const ModRefInfo Mode);
 
   /// A convenience wrapper synthesizing a memory location.
   bool canInstructionRangeModRef(const Instruction &I1, const Instruction &I2,
                                  const Value *Ptr, uint64_t Size,
                                  const ModRefInfo Mode) {
     return canInstructionRangeModRef(I1, I2, MemoryLocation(Ptr, Size), Mode);
   }
+
+private:
+  class Concept;
+  template <typename T> class Model;
+
+  template <typename T> friend class AAResultBase;
+
+  std::vector<std::unique_ptr<Concept>> AAs;
+};
+
+/// Temporary typedef for legacy code that uses a generic \c AliasAnalysis
+/// pointer or reference.
+typedef AAResults AliasAnalysis;
+
+/// A private abstract base class describing the concept of an individual alias
+/// analysis implementation.
+///
+/// This interface is implemented by any \c Model instantiation. It is also the
+/// interface which a type used to instantiate the model must provide.
+///
+/// All of these methods model methods by the same name in the \c
+/// AAResults class. Only differences and specifics to how the
+/// implementations are called are documented here.
+class AAResults::Concept {
+public:
+  virtual ~Concept() = 0;
+
+  /// An update API used internally by the AAResults to provide
+  /// a handle back to the top level aggregation.
+  virtual void setAAResults(AAResults *NewAAR) = 0;
+
+  //===--------------------------------------------------------------------===//
+  /// \name Alias Queries
+  /// @{
+
+  /// The main low level interface to the alias analysis implementation.
+  /// Returns an AliasResult indicating whether the two pointers are aliased to
+  /// each other. This is the interface that must be implemented by specific
+  /// alias analysis implementations.
+  virtual AliasResult alias(const MemoryLocation &LocA,
+                            const MemoryLocation &LocB) = 0;
+
+  /// Checks whether the given location points to constant memory, or if
+  /// \p OrLocal is true whether it points to a local alloca.
+  virtual bool pointsToConstantMemory(const MemoryLocation &Loc,
+                                      bool OrLocal) = 0;
+
+  /// @}
+  //===--------------------------------------------------------------------===//
+  /// \name Simple mod/ref information
+  /// @{
+
+  /// Get the ModRef info associated with a pointer argument of a callsite. The
+  /// result's bits are set to indicate the allowed aliasing ModRef kinds. Note
+  /// that these bits do not necessarily account for the overall behavior of
+  /// the function, but rather only provide additional per-argument
+  /// information.
+  virtual ModRefInfo getArgModRefInfo(ImmutableCallSite CS,
+                                      unsigned ArgIdx) = 0;
+
+  /// Return the behavior of the given call site.
+  virtual FunctionModRefBehavior getModRefBehavior(ImmutableCallSite CS) = 0;
+
+  /// Return the behavior when calling the given function.
+  virtual FunctionModRefBehavior getModRefBehavior(const Function *F) = 0;
+
+  /// getModRefInfo (for call sites) - Return information about whether
+  /// a particular call site modifies or reads the specified memory location.
+  virtual ModRefInfo getModRefInfo(ImmutableCallSite CS,
+                                   const MemoryLocation &Loc) = 0;
+
+  /// Return information about whether two call sites may refer to the same set
+  /// of memory locations. See the AA documentation for details:
+  ///   http://llvm.org/docs/AliasAnalysis.html#ModRefInfo
+  virtual ModRefInfo getModRefInfo(ImmutableCallSite CS1,
+                                   ImmutableCallSite CS2) = 0;
+
+  /// @}
+};
+
+/// A private class template which derives from \c Concept and wraps some other
+/// type.
+///
+/// This models the concept by directly forwarding each interface point to the
+/// wrapped type which must implement a compatible interface. This provides
+/// a type erased binding.
+template <typename AAResultT> class AAResults::Model final : public Concept {
+  AAResultT &Result;
+
+public:
+  explicit Model(AAResultT &Result, AAResults &AAR) : Result(Result) {
+    Result.setAAResults(&AAR);
+  }
+  ~Model() override {}
+
+  void setAAResults(AAResults *NewAAR) override { Result.setAAResults(NewAAR); }
+
+  AliasResult alias(const MemoryLocation &LocA,
+                    const MemoryLocation &LocB) override {
+    return Result.alias(LocA, LocB);
+  }
+
+  bool pointsToConstantMemory(const MemoryLocation &Loc,
+                              bool OrLocal) override {
+    return Result.pointsToConstantMemory(Loc, OrLocal);
+  }
+
+  ModRefInfo getArgModRefInfo(ImmutableCallSite CS, unsigned ArgIdx) override {
+    return Result.getArgModRefInfo(CS, ArgIdx);
+  }
+
+  FunctionModRefBehavior getModRefBehavior(ImmutableCallSite CS) override {
+    return Result.getModRefBehavior(CS);
+  }
+
+  FunctionModRefBehavior getModRefBehavior(const Function *F) override {
+    return Result.getModRefBehavior(F);
+  }
+
+  ModRefInfo getModRefInfo(ImmutableCallSite CS,
+                           const MemoryLocation &Loc) override {
+    return Result.getModRefInfo(CS, Loc);
+  }
+
+  ModRefInfo getModRefInfo(ImmutableCallSite CS1,
+                           ImmutableCallSite CS2) override {
+    return Result.getModRefInfo(CS1, CS2);
+  }
 };
 
+/// A CRTP-driven "mixin" base class to help implement the function alias
+/// analysis results concept.
+///
+/// Because of the nature of many alias analysis implementations, they often
+/// only implement a subset of the interface. This base class will attempt to
+/// implement the remaining portions of the interface in terms of simpler forms
+/// of the interface where possible, and otherwise provide conservatively
+/// correct fallback implementations.
+///
+/// Implementors of an alias analysis should derive from this CRTP, and then
+/// override specific methods that they wish to customize. There is no need to
+/// use virtual anywhere, the CRTP base class does static dispatch to the
+/// derived type passed into it.
+template <typename DerivedT> class AAResultBase {
+  // Expose some parts of the interface only to the AAResults::Model
+  // for wrapping. Specifically, this allows the model to call our
+  // setAAResults method without exposing it as a fully public API.
+  friend class AAResults::Model<DerivedT>;
+
+  /// A pointer to the AAResults object that this AAResult is
+  /// aggregated within. May be null if not aggregated.
+  AAResults *AAR;
+
+  /// Helper to dispatch calls back through the derived type.
+  DerivedT &derived() { return static_cast<DerivedT &>(*this); }
+
+  /// A setter for the AAResults pointer, which is used to satisfy the
+  /// AAResults::Model contract.
+  void setAAResults(AAResults *NewAAR) { AAR = NewAAR; }
+
+protected:
+  /// This proxy class models a common pattern where we delegate to either the
+  /// top-level \c AAResults aggregation if one is registered, or to the
+  /// current result if none are registered.
+  class AAResultsProxy {
+    AAResults *AAR;
+    DerivedT &CurrentResult;
+
+  public:
+    AAResultsProxy(AAResults *AAR, DerivedT &CurrentResult)
+        : AAR(AAR), CurrentResult(CurrentResult) {}
+
+    AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB) {
+      return AAR ? AAR->alias(LocA, LocB) : CurrentResult.alias(LocA, LocB);
+    }
+
+    bool pointsToConstantMemory(const MemoryLocation &Loc, bool OrLocal) {
+      return AAR ? AAR->pointsToConstantMemory(Loc, OrLocal)
+                 : CurrentResult.pointsToConstantMemory(Loc, OrLocal);
+    }
+
+    ModRefInfo getArgModRefInfo(ImmutableCallSite CS, unsigned ArgIdx) {
+      return AAR ? AAR->getArgModRefInfo(CS, ArgIdx) : CurrentResult.getArgModRefInfo(CS, ArgIdx);
+    }
+
+    FunctionModRefBehavior getModRefBehavior(ImmutableCallSite CS) {
+      return AAR ? AAR->getModRefBehavior(CS) : CurrentResult.getModRefBehavior(CS);
+    }
+
+    FunctionModRefBehavior getModRefBehavior(const Function *F) {
+      return AAR ? AAR->getModRefBehavior(F) : CurrentResult.getModRefBehavior(F);
+    }
+
+    ModRefInfo getModRefInfo(ImmutableCallSite CS, const MemoryLocation &Loc) {
+      return AAR ? AAR->getModRefInfo(CS, Loc)
+                 : CurrentResult.getModRefInfo(CS, Loc);
+    }
+
+    ModRefInfo getModRefInfo(ImmutableCallSite CS1, ImmutableCallSite CS2) {
+      return AAR ? AAR->getModRefInfo(CS1, CS2) : CurrentResult.getModRefInfo(CS1, CS2);
+    }
+  };
+
+  const TargetLibraryInfo &TLI;
+
+  explicit AAResultBase(const TargetLibraryInfo &TLI) : TLI(TLI) {}
+
+  // Provide all the copy and move constructors so that derived types aren't
+  // constrained.
+  AAResultBase(const AAResultBase &Arg) : TLI(Arg.TLI) {}
+  AAResultBase(AAResultBase &&Arg) : TLI(Arg.TLI) {}
+
+  /// Get a proxy for the best AA result set to query at this time.
+  ///
+  /// When this result is part of a larger aggregation, this will proxy to that
+  /// aggregation. When this result is used in isolation, it will just delegate
+  /// back to the derived class's implementation.
+  AAResultsProxy getBestAAResults() { return AAResultsProxy(AAR, derived()); }
+
+public:
+  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB) {
+    return MayAlias;
+  }
+
+  bool pointsToConstantMemory(const MemoryLocation &Loc, bool OrLocal) {
+    return false;
+  }
+
+  ModRefInfo getArgModRefInfo(ImmutableCallSite CS, unsigned ArgIdx) {
+    return MRI_ModRef;
+  }
+
+  FunctionModRefBehavior getModRefBehavior(ImmutableCallSite CS) {
+    if (const Function *F = CS.getCalledFunction())
+      return getBestAAResults().getModRefBehavior(F);
+
+    return FMRB_UnknownModRefBehavior;
+  }
+
+  FunctionModRefBehavior getModRefBehavior(const Function *F) {
+    return FMRB_UnknownModRefBehavior;
+  }
+
+  ModRefInfo getModRefInfo(ImmutableCallSite CS, const MemoryLocation &Loc);
+
+  ModRefInfo getModRefInfo(ImmutableCallSite CS1, ImmutableCallSite CS2);
+};
+
+/// Synthesize \c ModRefInfo for a call site and memory location by examining
+/// the general behavior of the call site and any specific information for its
+/// arguments.
+///
+/// This essentially, delegates across the alias analysis interface to collect
+/// information which may be enough to (conservatively) fulfill the query.
+template <typename DerivedT>
+ModRefInfo AAResultBase<DerivedT>::getModRefInfo(ImmutableCallSite CS,
+                                                 const MemoryLocation &Loc) {
+  auto MRB = getBestAAResults().getModRefBehavior(CS);
+  if (MRB == FMRB_DoesNotAccessMemory)
+    return MRI_NoModRef;
+
+  ModRefInfo Mask = MRI_ModRef;
+  if (AAResults::onlyReadsMemory(MRB))
+    Mask = MRI_Ref;
+
+  if (AAResults::onlyAccessesArgPointees(MRB)) {
+    bool DoesAlias = false;
+    ModRefInfo AllArgsMask = MRI_NoModRef;
+    if (AAResults::doesAccessArgPointees(MRB)) {
+      for (ImmutableCallSite::arg_iterator AI = CS.arg_begin(),
+                                           AE = CS.arg_end();
+           AI != AE; ++AI) {
+        const Value *Arg = *AI;
+        if (!Arg->getType()->isPointerTy())
+          continue;
+        unsigned ArgIdx = std::distance(CS.arg_begin(), AI);
+        MemoryLocation ArgLoc = MemoryLocation::getForArgument(CS, ArgIdx, TLI);
+        AliasResult ArgAlias = getBestAAResults().alias(ArgLoc, Loc);
+        if (ArgAlias != NoAlias) {
+          ModRefInfo ArgMask = getBestAAResults().getArgModRefInfo(CS, ArgIdx);
+          DoesAlias = true;
+          AllArgsMask = ModRefInfo(AllArgsMask | ArgMask);
+        }
+      }
+    }
+    if (!DoesAlias)
+      return MRI_NoModRef;
+    Mask = ModRefInfo(Mask & AllArgsMask);
+  }
+
+  // If Loc is a constant memory location, the call definitely could not
+  // modify the memory location.
+  if ((Mask & MRI_Mod) &&
+      getBestAAResults().pointsToConstantMemory(Loc, /*OrLocal*/ false))
+    Mask = ModRefInfo(Mask & ~MRI_Mod);
+
+  return Mask;
+}
+
+/// Synthesize \c ModRefInfo for two call sites by examining the general
+/// behavior of the call site and any specific information for its arguments.
+///
+/// This essentially, delegates across the alias analysis interface to collect
+/// information which may be enough to (conservatively) fulfill the query.
+template <typename DerivedT>
+ModRefInfo AAResultBase<DerivedT>::getModRefInfo(ImmutableCallSite CS1,
+                                                 ImmutableCallSite CS2) {
+  // If CS1 or CS2 are readnone, they don't interact.
+  auto CS1B = getBestAAResults().getModRefBehavior(CS1);
+  if (CS1B == FMRB_DoesNotAccessMemory)
+    return MRI_NoModRef;
+
+  auto CS2B = getBestAAResults().getModRefBehavior(CS2);
+  if (CS2B == FMRB_DoesNotAccessMemory)
+    return MRI_NoModRef;
+
+  // If they both only read from memory, there is no dependence.
+  if (AAResults::onlyReadsMemory(CS1B) && AAResults::onlyReadsMemory(CS2B))
+    return MRI_NoModRef;
+
+  ModRefInfo Mask = MRI_ModRef;
+
+  // If CS1 only reads memory, the only dependence on CS2 can be
+  // from CS1 reading memory written by CS2.
+  if (AAResults::onlyReadsMemory(CS1B))
+    Mask = ModRefInfo(Mask & MRI_Ref);
+
+  // If CS2 only access memory through arguments, accumulate the mod/ref
+  // information from CS1's references to the memory referenced by
+  // CS2's arguments.
+  if (AAResults::onlyAccessesArgPointees(CS2B)) {
+    ModRefInfo R = MRI_NoModRef;
+    if (AAResults::doesAccessArgPointees(CS2B)) {
+      for (ImmutableCallSite::arg_iterator I = CS2.arg_begin(),
+                                           E = CS2.arg_end();
+           I != E; ++I) {
+        const Value *Arg = *I;
+        if (!Arg->getType()->isPointerTy())
+          continue;
+        unsigned CS2ArgIdx = std::distance(CS2.arg_begin(), I);
+        auto CS2ArgLoc = MemoryLocation::getForArgument(CS2, CS2ArgIdx, TLI);
+
+        // ArgMask indicates what CS2 might do to CS2ArgLoc, and the dependence
+        // of CS1 on that location is the inverse.
+        ModRefInfo ArgMask =
+            getBestAAResults().getArgModRefInfo(CS2, CS2ArgIdx);
+        if (ArgMask == MRI_Mod)
+          ArgMask = MRI_ModRef;
+        else if (ArgMask == MRI_Ref)
+          ArgMask = MRI_Mod;
+
+        ArgMask = ModRefInfo(ArgMask &
+                             getBestAAResults().getModRefInfo(CS1, CS2ArgLoc));
+
+        R = ModRefInfo((R | ArgMask) & Mask);
+        if (R == Mask)
+          break;
+      }
+    }
+    return R;
+  }
+
+  // If CS1 only accesses memory through arguments, check if CS2 references
+  // any of the memory referenced by CS1's arguments. If not, return NoModRef.
+  if (AAResults::onlyAccessesArgPointees(CS1B)) {
+    ModRefInfo R = MRI_NoModRef;
+    if (AAResults::doesAccessArgPointees(CS1B)) {
+      for (ImmutableCallSite::arg_iterator I = CS1.arg_begin(),
+                                           E = CS1.arg_end();
+           I != E; ++I) {
+        const Value *Arg = *I;
+        if (!Arg->getType()->isPointerTy())
+          continue;
+        unsigned CS1ArgIdx = std::distance(CS1.arg_begin(), I);
+        auto CS1ArgLoc = MemoryLocation::getForArgument(CS1, CS1ArgIdx, TLI);
+
+        // ArgMask indicates what CS1 might do to CS1ArgLoc; if CS1 might Mod
+        // CS1ArgLoc, then we care about either a Mod or a Ref by CS2. If CS1
+        // might Ref, then we care only about a Mod by CS2.
+        ModRefInfo ArgMask = getBestAAResults().getArgModRefInfo(CS1, CS1ArgIdx);
+        ModRefInfo ArgR = getBestAAResults().getModRefInfo(CS2, CS1ArgLoc);
+        if (((ArgMask & MRI_Mod) != MRI_NoModRef &&
+             (ArgR & MRI_ModRef) != MRI_NoModRef) ||
+            ((ArgMask & MRI_Ref) != MRI_NoModRef &&
+             (ArgR & MRI_Mod) != MRI_NoModRef))
+          R = ModRefInfo((R | ArgMask) & Mask);
+
+        if (R == Mask)
+          break;
+      }
+    }
+    return R;
+  }
+
+  return Mask;
+}
+
 /// isNoAliasCall - Return true if this pointer is returned by a noalias
 /// function.
 bool isNoAliasCall(const Value *V);
 
 /// isNoAliasArgument - Return true if this is an argument with the noalias
 /// attribute.
 bool isNoAliasArgument(const Value *V);
 
 /// isIdentifiedObject - Return true if this pointer refers to a distinct and
 /// identifiable object.  This returns true for:
 ///    Global Variables and Functions (but not Global Aliases)
 ///    Allocas
 ///    ByVal and NoAlias Arguments
 ///    NoAlias returns (e.g. calls to malloc)
 ///
 bool isIdentifiedObject(const Value *V);
 
 /// isIdentifiedFunctionLocal - Return true if V is umabigously identified
 /// at the function-level. Different IdentifiedFunctionLocals can't alias.
 /// Further, an IdentifiedFunctionLocal can not alias with any function
 /// arguments other than itself, which is not necessarily true for
 /// IdentifiedObjects.
 bool isIdentifiedFunctionLocal(const Value *V);
 
+/// A manager for alias analyses.
+///
+/// This class can have analyses registered with it and when run, it will run
+/// all of them and aggregate their results into single AA results interface
+/// that dispatches across all of the alias analysis results available.
+///
+/// Note that the order in which analyses are registered is very significant.
+/// That is the order in which the results will be aggregated and queried.
+///
+/// This manager effectively wraps the AnalysisManager for registering alias
+/// analyses. When you register your alias analysis with this manager, it will
+/// ensure the analysis itself is registered with its AnalysisManager.
+class AAManager {
+public:
+  typedef AAResults Result;
+
+  // This type hase value semantics. We have to spell these out because MSVC
+  // won't synthesize them.
+  AAManager() {}
+  AAManager(AAManager &&Arg)
+      : FunctionResultGetters(std::move(Arg.FunctionResultGetters)) {}
+  AAManager(const AAManager &Arg)
+      : FunctionResultGetters(Arg.FunctionResultGetters) {}
+  AAManager &operator=(AAManager &&RHS) {
+    FunctionResultGetters = std::move(RHS.FunctionResultGetters);
+    return *this;
+  }
+  AAManager &operator=(const AAManager &RHS) {
+    FunctionResultGetters = RHS.FunctionResultGetters;
+    return *this;
+  }
+
+  /// Register a specific AA result.
+  template <typename AnalysisT> void registerFunctionAnalysis() {
+    FunctionResultGetters.push_back(&getFunctionAAResultImpl<AnalysisT>);
+  }
+
+  Result run(Function &F, AnalysisManager<Function> &AM) {
+    Result R;
+    for (auto &Getter : FunctionResultGetters)
+      (*Getter)(F, AM, R);
+    return R;
+  }
+
+private:
+  SmallVector<void (*)(Function &F, AnalysisManager<Function> &AM,
+                       AAResults &AAResults),
+              4> FunctionResultGetters;
+
+  template <typename AnalysisT>
+  static void getFunctionAAResultImpl(Function &F,
+                                      AnalysisManager<Function> &AM,
+                                      AAResults &AAResults) {
+    AAResults.addAAResult(AM.template getResult<AnalysisT>(F));
+  }
+};
+
+/// A wrapper pass to provide the legacy pass manager access to a suitably
+/// prepared AAResults object.
+class AAResultsWrapperPass : public FunctionPass {
+  std::unique_ptr<AAResults> AAR;
+
+public:
+  static char ID;
+
+  AAResultsWrapperPass();
+
+  AAResults &getAAResults() { return *AAR; }
+  const AAResults &getAAResults() const { return *AAR; }
+
+  bool runOnFunction(Function &F) override;
+
+  void getAnalysisUsage(AnalysisUsage &AU) const override;
+};
+
+FunctionPass *createAAResultsWrapperPass();
+
+/// A helper for the legacy pass manager to create a \c AAResults
+/// object populated to the best of our ability for a particular function when
+/// inside of a \c ModulePass or a \c CallGraphSCCPass.
+AAResults createLegacyPMAAResults(Pass &P, Function &F, BasicAAResult &BAR);
+
 } // End llvm namespace
 
 #endif

llvm/trunk/include/llvm/Analysis/AliasAnalysisCounter.h

-//===- AliasAnalysisCounter.h - Alias Analysis Query Counter ----*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-/// \file
-/// This declares an alias analysis which counts and prints queries made
-/// through it. By inserting this between other AAs you can track when specific
-/// layers of LLVM's AA get queried.
-///
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_ANALYSIS_ALIASANALYSISCOUNTER_H
-#define LLVM_ANALYSIS_ALIASANALYSISCOUNTER_H
-
-#include "llvm/Analysis/AliasAnalysis.h"
-#include "llvm/IR/Module.h"
-#include "llvm/Pass.h"
-
-namespace llvm {
-
-class AliasAnalysisCounter : public ModulePass, public AliasAnalysis {
-  unsigned No, May, Partial, Must;
-  unsigned NoMR, JustRef, JustMod, MR;
-  Module *M;
-
-public:
-  static char ID; // Class identification, replacement for typeinfo
-
-  AliasAnalysisCounter();
-  ~AliasAnalysisCounter() override;
-
-  bool runOnModule(Module &M) override;
-
-  void getAnalysisUsage(AnalysisUsage &AU) const override;
-
-  /// getAdjustedAnalysisPointer - This method is used when a pass implements
-  /// an analysis interface through multiple inheritance.  If needed, it
-  /// should override this to adjust the this pointer as needed for the
-  /// specified pass info.
-  void *getAdjustedAnalysisPointer(AnalysisID PI) override;
-
-  // Forwarding functions: just delegate to a real AA implementation, counting
-  // the number of responses...
-  AliasResult alias(const MemoryLocation &LocA,
-                    const MemoryLocation &LocB) override;
-
-  using AliasAnalysis::getModRefInfo;
-  ModRefInfo getModRefInfo(ImmutableCallSite CS,
-                           const MemoryLocation &Loc) override;
-};
-
-//===--------------------------------------------------------------------===//
-//
-// createAliasAnalysisCounterPass - This pass counts alias queries and how the
-// alias analysis implementation responds.
-//
-ModulePass *createAliasAnalysisCounterPass();
-
-}
-
-#endif

llvm/trunk/include/llvm/Analysis/AliasSetTracker.h

 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_ANALYSIS_ALIASSETTRACKER_H
 #define LLVM_ANALYSIS_ALIASSETTRACKER_H
 
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/ilist.h"
 #include "llvm/ADT/ilist_node.h"
+#include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/IR/Metadata.h"
 #include "llvm/IR/ValueHandle.h"
 #include <vector>
 
 namespace llvm {
 
-class AliasAnalysis;
 class LoadInst;
 class StoreInst;
 class VAArgInst;
 class AliasSetTracker;
 class AliasSet;
 
 class AliasSet : public ilist_node<AliasSet> {
   friend class AliasSetTracker;

llvm/trunk/include/llvm/Analysis/BasicAliasAnalysis.h

 #include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/Analysis/AssumptionCache.h"
 #include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/GetElementPtrTypeIterator.h"
 #include "llvm/IR/Instruction.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/Module.h"
-#include "llvm/Pass.h"
+#include "llvm/IR/PassManager.h"
 #include "llvm/Support/ErrorHandling.h"
 
 namespace llvm {
-
-/// This is the primary alias analysis implementation.
-struct BasicAliasAnalysis : public ImmutablePass, public AliasAnalysis {
-  static char ID; // Class identification, replacement for typeinfo
+class AssumptionCache;
+class DominatorTree;
+class LoopInfo;
+
+/// This is the AA result object for the basic, local, and stateless alias
+/// analysis. It implements the AA query interface in an entirely stateless
+/// manner. As one consequence, it is never invalidated. While it does retain
+/// some storage, that is used as an optimization and not to preserve
+/// information from query to query.
+class BasicAAResult : public AAResultBase<BasicAAResult> {
+  friend AAResultBase<BasicAAResult>;
+
+  const DataLayout &DL;
+  AssumptionCache &AC;
+  DominatorTree *DT;
+  LoopInfo *LI;
 
 #ifndef NDEBUG
   static const Function *getParent(const Value *V) {
     if (const Instruction *inst = dyn_cast<Instruction>(V))
       return inst->getParent()->getParent();
 
     if (const Argument *arg = dyn_cast<Argument>(V))
       return arg->getParent();
 
     return nullptr;
   }
 
   static bool notDifferentParent(const Value *O1, const Value *O2) {
 
     const Function *F1 = getParent(O1);
     const Function *F2 = getParent(O2);
 
     return !F1 || !F2 || F1 == F2;
   }
 #endif
 
-  BasicAliasAnalysis() : ImmutablePass(ID) {
-    initializeBasicAliasAnalysisPass(*PassRegistry::getPassRegistry());
-  }
-
-  bool doInitialization(Module &M) override;
+public:
+  BasicAAResult(const DataLayout &DL, const TargetLibraryInfo &TLI,
+                AssumptionCache &AC, DominatorTree *DT = nullptr,
+                LoopInfo *LI = nullptr)
+      : AAResultBase(TLI), DL(DL), AC(AC), DT(DT), LI(LI) {}
+
+  BasicAAResult(const BasicAAResult &Arg)
+      : AAResultBase(Arg), DL(Arg.DL), AC(Arg.AC), DT(Arg.DT), LI(Arg.LI) {}
+  BasicAAResult(BasicAAResult &&Arg)
+      : AAResultBase(std::move(Arg)), DL(Arg.DL), AC(Arg.AC), DT(Arg.DT),
+        LI(Arg.LI) {}
 
-  void getAnalysisUsage(AnalysisUsage &AU) const override {
-    AU.addRequired<AliasAnalysis>();
-    AU.addRequired<AssumptionCacheTracker>();
-    AU.addRequired<TargetLibraryInfoWrapperPass>();
-  }
+  /// Handle invalidation events from the new pass manager.
+  ///
+  /// By definition, this result is stateless and so remains valid.
+  bool invalidate(Function &, const PreservedAnalyses &) { return false; }
 
-  AliasResult alias(const MemoryLocation &LocA,
-                    const MemoryLocation &LocB) override {
-    assert(AliasCache.empty() && "AliasCache must be cleared after use!");
+  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB) {
     assert(notDifferentParent(LocA.Ptr, LocB.Ptr) &&
            "BasicAliasAnalysis doesn't support interprocedural queries.");
+
+    // If we have a directly cached entry for these locations, we have recursed
+    // through this once, so just return the cached results. Notably, when this
+    // happens, we don't clear the cache.
+    auto CacheIt = AliasCache.find(LocPair(LocA, LocB));
+    if (CacheIt != AliasCache.end())
+      return CacheIt->second;
+
     AliasResult Alias = aliasCheck(LocA.Ptr, LocA.Size, LocA.AATags, LocB.Ptr,
                                    LocB.Size, LocB.AATags);
     // AliasCache rarely has more than 1 or 2 elements, always use
     // shrink_and_clear so it quickly returns to the inline capacity of the
     // SmallDenseMap if it ever grows larger.
     // FIXME: This should really be shrink_to_inline_capacity_and_clear().
     AliasCache.shrink_and_clear();
     VisitedPhiBBs.clear();
     return Alias;
   }
 
-  ModRefInfo getModRefInfo(ImmutableCallSite CS,
-                           const MemoryLocation &Loc) override;
+  ModRefInfo getModRefInfo(ImmutableCallSite CS, const MemoryLocation &Loc);
 
-  ModRefInfo getModRefInfo(ImmutableCallSite CS1,
-                           ImmutableCallSite CS2) override;
+  ModRefInfo getModRefInfo(ImmutableCallSite CS1, ImmutableCallSite CS2);
 
   /// Chases pointers until we find a (constant global) or not.
-  bool pointsToConstantMemory(const MemoryLocation &Loc, bool OrLocal) override;
+  bool pointsToConstantMemory(const MemoryLocation &Loc, bool OrLocal);
 
   /// Get the location associated with a pointer argument of a callsite.
-  ModRefInfo getArgModRefInfo(ImmutableCallSite CS, unsigned ArgIdx) override;
+  ModRefInfo getArgModRefInfo(ImmutableCallSite CS, unsigned ArgIdx);
 
   /// Returns the behavior when calling the given call site.
-  FunctionModRefBehavior getModRefBehavior(ImmutableCallSite CS) override;
+  FunctionModRefBehavior getModRefBehavior(ImmutableCallSite CS);
 
   /// Returns the behavior when calling the given function. For use when the
   /// call site is not known.
-  FunctionModRefBehavior getModRefBehavior(const Function *F) override;
-
-  /// This method is used when a pass implements an analysis interface through
-  /// multiple inheritance.  If needed, it should override this to adjust the
-  /// this pointer as needed for the specified pass info.
-  void *getAdjustedAnalysisPointer(const void *ID) override {
-    if (ID == &AliasAnalysis::ID)
-      return (AliasAnalysis *)this;
-    return this;
-  }
+  FunctionModRefBehavior getModRefBehavior(const Function *F);
 
 private:
   // A linear transformation of a Value; this class represents ZExt(SExt(V,
   // SExtBits), ZExtBits) * Scale + Offset.
   struct VariableGEPIndex {
 
     // An opaque Value - we can't decompose this further.
     const Value *V;
private:
   /// GetLinearExpression has some limitations, as generally zext(%x + 1)
   /// != zext(%x) + zext(1) if the arithmetic overflows. GetLinearExpression
   /// will therefore conservatively refuse to decompose these expressions.
   /// However, we know that, for all %x, zext(%x) != zext(%x + 1), even if
   /// the addition overflows.
   bool
   constantOffsetHeuristic(const SmallVectorImpl<VariableGEPIndex> &VarIndices,
                           uint64_t V1Size, uint64_t V2Size, int64_t BaseOffset,
-                          const DataLayout *DL, AssumptionCache *AC,
-                          DominatorTree *DT);
+                          AssumptionCache *AC, DominatorTree *DT);
 
   bool isValueEqualInPotentialCycles(const Value *V1, const Value *V2);
 
   void GetIndexDifference(SmallVectorImpl<VariableGEPIndex> &Dest,
                           const SmallVectorImpl<VariableGEPIndex> &Src);
 
   AliasResult aliasGEP(const GEPOperator *V1, uint64_t V1Size,
                        const AAMDNodes &V1AAInfo, const Value *V2,
                        uint64_t V2Size, const AAMDNodes &V2AAInfo,
                        const Value *UnderlyingV1, const Value *UnderlyingV2);
 
   AliasResult aliasPHI(const PHINode *PN, uint64_t PNSize,
                        const AAMDNodes &PNAAInfo, const Value *V2,
                        uint64_t V2Size, const AAMDNodes &V2AAInfo);
 
   AliasResult aliasSelect(const SelectInst *SI, uint64_t SISize,
                           const AAMDNodes &SIAAInfo, const Value *V2,
                           uint64_t V2Size, const AAMDNodes &V2AAInfo);
 
   AliasResult aliasCheck(const Value *V1, uint64_t V1Size, AAMDNodes V1AATag,
                          const Value *V2, uint64_t V2Size, AAMDNodes V2AATag);
 };
 
-//===--------------------------------------------------------------------===//
-//
-// createBasicAliasAnalysisPass - This pass implements the stateless alias
-// analysis.
-//
-ImmutablePass *createBasicAliasAnalysisPass();
+/// Analysis pass providing a never-invalidated alias analysis result.
+class BasicAA {
+public:
+  typedef BasicAAResult Result;
+
+  /// \brief Opaque, unique identifier for this analysis pass.
+  static void *ID() { return (void *)&PassID; }
+
+  BasicAAResult run(Function &F, AnalysisManager<Function> *AM);
+
+  /// \brief Provide access to a name for this pass for debugging purposes.
+  static StringRef name() { return "BasicAliasAnalysis"; }
+
+private:
+  static char PassID;
+};
+
+/// Legacy wrapper pass to provide the BasicAAResult object.
+class BasicAAWrapperPass : public FunctionPass {
+  std::unique_ptr<BasicAAResult> Result;
+
+  virtual void anchor();
+
+public:
+  static char ID;
+
+  BasicAAWrapperPass() : FunctionPass(ID) {}
+
+  BasicAAResult &getResult() { return *Result; }
+  const BasicAAResult &getResult() const { return *Result; }
+
+  bool runOnFunction(Function &F) override;
+  void getAnalysisUsage(AnalysisUsage &AU) const override;
+};
+
+FunctionPass *createBasicAAWrapperPass();
 
+/// A helper for the legacy pass manager to create a \c BasicAAResult object
+/// populated to the best of our ability for a particular function when inside
+/// of a \c ModulePass or a \c CallGraphSCCPass.
+BasicAAResult createLegacyPMBasicAAResult(Pass &P, Function &F);
 }
 
 #endif

llvm/trunk/include/llvm/Analysis/CFLAliasAnalysis.h

 #include "llvm/IR/Function.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/ValueHandle.h"
 #include "llvm/Pass.h"
 #include <forward_list>
 
 namespace llvm {
 
-class CFLAliasAnalysis : public ImmutablePass, public AliasAnalysis {
-  struct FunctionInfo;
-
-  struct FunctionHandle final : public CallbackVH {
-    FunctionHandle(Function *Fn, CFLAliasAnalysis *CFLAA)
-        : CallbackVH(Fn), CFLAA(CFLAA) {
-      assert(Fn != nullptr);
-      assert(CFLAA != nullptr);
-    }
-
-    void deleted() override { removeSelfFromCache(); }
-    void allUsesReplacedWith(Value *) override { removeSelfFromCache(); }
-
-  private:
-    CFLAliasAnalysis *CFLAA;
+class CFLAAResult : public AAResultBase<CFLAAResult> {
+  friend AAResultBase<CFLAAResult>;
 
-    void removeSelfFromCache() {
-      assert(CFLAA != nullptr);
-      auto *Val = getValPtr();
-      CFLAA->evict(cast<Function>(Val));
-      setValPtr(nullptr);
-    }
-  };
-
-  /// \brief Cached mapping of Functions to their StratifiedSets.
-  /// If a function's sets are currently being built, it is marked
-  /// in the cache as an Optional without a value. This way, if we
-  /// have any kind of recursion, it is discernable from a function
-  /// that simply has empty sets.
-  DenseMap<Function *, Optional<FunctionInfo>> Cache;
-  std::forward_list<FunctionHandle> Handles;
+  struct FunctionInfo;
 
 public:
-  static char ID;
-
-  CFLAliasAnalysis();
-  ~CFLAliasAnalysis() override;
-
-  void getAnalysisUsage(AnalysisUsage &AU) const override;
+  explicit CFLAAResult(const TargetLibraryInfo &TLI);
+  CFLAAResult(CFLAAResult &&Arg);
 
-  void *getAdjustedAnalysisPointer(const void *ID) override;
+  /// Handle invalidation events from the new pass manager.
+  ///
+  /// By definition, this result is stateless and so remains valid.
+  bool invalidate(Function &, const PreservedAnalyses &) { return false; }
 
   /// \brief Inserts the given Function into the cache.
   void scan(Function *Fn);
 
   void evict(Function *Fn);
 
   /// \brief Ensures that the given function is available in the cache.
   /// Returns the appropriate entry from the cache.
   const Optional<FunctionInfo> &ensureCached(Function *Fn);
 
   AliasResult query(const MemoryLocation &LocA, const MemoryLocation &LocB);
 
-  AliasResult alias(const MemoryLocation &LocA,
-                    const MemoryLocation &LocB) override {
+  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB) {
     if (LocA.Ptr == LocB.Ptr) {
       if (LocA.Size == LocB.Size) {
         return MustAlias;
       } else {
         return PartialAlias;
       }
     }
 
     // Comparisons between global variables and other constants should be
     // handled by BasicAA.
     // TODO: ConstantExpr handling -- CFLAA may report NoAlias when comparing
     // a GlobalValue and ConstantExpr, but every query needs to have at least
     // one Value tied to a Function, and neither GlobalValues nor ConstantExprs
     // are.
     if (isa<Constant>(LocA.Ptr) && isa<Constant>(LocB.Ptr)) {
-      return AliasAnalysis::alias(LocA, LocB);
+      return AAResultBase::alias(LocA, LocB);
     }
 
     AliasResult QueryResult = query(LocA, LocB);
     if (QueryResult == MayAlias)
-      return AliasAnalysis::alias(LocA, LocB);
+      return AAResultBase::alias(LocA, LocB);
 
     return QueryResult;
   }
 
-  bool doInitialization(Module &M) override;
+private:
+  struct FunctionHandle final : public CallbackVH {
+    FunctionHandle(Function *Fn, CFLAAResult *Result)
+        : CallbackVH(Fn), Result(Result) {
+      assert(Fn != nullptr);
+      assert(Result != nullptr);
+    }
+
+    void deleted() override { removeSelfFromCache(); }
+    void allUsesReplacedWith(Value *) override { removeSelfFromCache(); }
 
   private:
+    CFLAAResult *Result;
+
+    void removeSelfFromCache() {
+      assert(Result != nullptr);
+      auto *Val = getValPtr();
+      Result->evict(cast<Function>(Val));
+      setValPtr(nullptr);
+    }
+  };
+
+  /// \brief Cached mapping of Functions to their StratifiedSets.
+  /// If a function's sets are currently being built, it is marked
+  /// in the cache as an Optional without a value. This way, if we
+  /// have any kind of recursion, it is discernable from a function
+  /// that simply has empty sets.
+  DenseMap<Function *, Optional<FunctionInfo>> Cache;
+  std::forward_list<FunctionHandle> Handles;
+
   FunctionInfo buildSetsFrom(Function *F);
 };
 
+/// Analysis pass providing a never-invalidated alias analysis result.
+///
+/// FIXME: We really should refactor CFL to use the analysis more heavily, and
+/// in particular to leverage invalidation to trigger re-computation of sets.
+class CFLAA {
+public:
+  typedef CFLAAResult Result;
+
+  /// \brief Opaque, unique identifier for this analysis pass.
+  static void *ID() { return (void *)&PassID; }
+
+  CFLAAResult run(Function &F, AnalysisManager<Function> *AM);
+
+  /// \brief Provide access to a name for this pass for debugging purposes.
+  static StringRef name() { return "CFLAA"; }
+
+private:
+  static char PassID;
+};
+
+/// Legacy wrapper pass to provide the CFLAAResult object.
+class CFLAAWrapperPass : public ImmutablePass {
+  std::unique_ptr<CFLAAResult> Result;
+
+public:
+  static char ID;
+
+  CFLAAWrapperPass();
+
+  CFLAAResult &getResult() { return *Result; }
+  const CFLAAResult &getResult() const { return *Result; }
+
+  bool doInitialization(Module &M) override;
+  bool doFinalization(Module &M) override;
+  void getAnalysisUsage(AnalysisUsage &AU) const override;
+};
+
 //===--------------------------------------------------------------------===//
 //
-// createCFLAliasAnalysisPass - This pass implements a set-based approach to
+// createCFLAAWrapperPass - This pass implements a set-based approach to
 // alias analysis.
 //
-ImmutablePass *createCFLAliasAnalysisPass();
-
+ImmutablePass *createCFLAAWrapperPass();
 }
 
 #endif

llvm/trunk/include/llvm/Analysis/DependenceAnalysis.h

 //
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_ANALYSIS_DEPENDENCEANALYSIS_H
 #define LLVM_ANALYSIS_DEPENDENCEANALYSIS_H
 
 #include "llvm/ADT/SmallBitVector.h"
 #include "llvm/ADT/ArrayRef.h"
+#include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/Pass.h"
 
 namespace llvm {
-  class AliasAnalysis;
   class Loop;
   class LoopInfo;
   class ScalarEvolution;
   class SCEV;
   class SCEVConstant;
   class raw_ostream;
 
   /// Dependence - This class represents a dependence between two memory

llvm/trunk/include/llvm/Analysis/GlobalsModRef.h

 #include "llvm/IR/Function.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/ValueHandle.h"
 #include "llvm/Pass.h"
 #include <list>
 
 namespace llvm {
 
-/// GlobalsModRef - The actual analysis pass.
-class GlobalsModRef : public ModulePass, public AliasAnalysis {
+/// An alias analysis result set for globals.
+///
+/// This focuses on handling aliasing properties of globals and interprocedural
+/// function call mod/ref information.
+class GlobalsAAResult : public AAResultBase<GlobalsAAResult> {
+  friend AAResultBase<GlobalsAAResult>;
+
   class FunctionInfo;
 
+  const DataLayout &DL;
+
   /// The globals that do not have their addresses taken.
   SmallPtrSet<const GlobalValue *, 8> NonAddressTakenGlobals;
 
   /// IndirectGlobals - The memory pointed to by this global is known to be
   /// 'owned' by the global.
   SmallPtrSet<const GlobalValue *, 8> IndirectGlobals;
 
   /// AllocsForIndirectGlobals - If an instruction allocates memory for an
   /// indirect global, this map indicates which one.
   DenseMap<const Value *, const GlobalValue *> AllocsForIndirectGlobals;
 
   /// For each function, keep track of what globals are modified or read.
   DenseMap<const Function *, FunctionInfo> FunctionInfos;
 
   /// Handle to clear this analysis on deletion of values.
   struct DeletionCallbackHandle final : CallbackVH {
-    GlobalsModRef &GMR;
+    GlobalsAAResult &GAR;
     std::list<DeletionCallbackHandle>::iterator I;
 
-    DeletionCallbackHandle(GlobalsModRef &GMR, Value *V)
-        : CallbackVH(V), GMR(GMR) {}
+    DeletionCallbackHandle(GlobalsAAResult &GAR, Value *V)
+        : CallbackVH(V), GAR(GAR) {}
 
     void deleted() override;
   };
 
   /// List of callbacks for globals being tracked by this analysis. Note that
   /// these objects are quite large, but we only anticipate having one per
   /// global tracked by this analysis. There are numerous optimizations we
   /// could perform to the memory utilization here if this becomes a problem.
   std::list<DeletionCallbackHandle> Handles;
 
-public:
-  static char ID;
-  GlobalsModRef();
-
-  bool runOnModule(Module &M) override {
-    InitializeAliasAnalysis(this, &M.getDataLayout());
+  explicit GlobalsAAResult(const DataLayout &DL, const TargetLibraryInfo &TLI);
 
-    // Find non-addr taken globals.
-    AnalyzeGlobals(M);
-
-    // Propagate on CG.
-    AnalyzeCallGraph(getAnalysis<CallGraphWrapperPass>().getCallGraph(), M);
-    return false;
-  }
-
-  void getAnalysisUsage(AnalysisUsage &AU) const override {
-    AliasAnalysis::getAnalysisUsage(AU);
-    AU.addRequired<CallGraphWrapperPass>();
-    AU.setPreservesAll(); // Does not transform code
-  }
+public:
+  GlobalsAAResult(GlobalsAAResult &&Arg);
 
-  /// getAdjustedAnalysisPointer - This method is used when a pass implements
-  /// an analysis interface through multiple inheritance.  If needed, it
-  /// should override this to adjust the this pointer as needed for the
-  /// specified pass info.
-  void *getAdjustedAnalysisPointer(AnalysisID PI) override {
-    if (PI == &AliasAnalysis::ID)
-      return (AliasAnalysis *)this;
-    return this;
-  }
+  static GlobalsAAResult analyzeModule(Module &M, const TargetLibraryInfo &TLI,
+                                       CallGraph &CG);
 
   //------------------------------------------------
   // Implement the AliasAnalysis API
   //
-  AliasResult alias(const MemoryLocation &LocA,
-                    const MemoryLocation &LocB) override;
+  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB);
 
-  using AliasAnalysis::getModRefInfo;
-  ModRefInfo getModRefInfo(ImmutableCallSite CS,
-                           const MemoryLocation &Loc) override;
+  using AAResultBase::getModRefInfo;
+  ModRefInfo getModRefInfo(ImmutableCallSite CS, const MemoryLocation &Loc);
 
   /// getModRefBehavior - Return the behavior of the specified function if
   /// called from the specified call site.  The call site may be null in which
   /// case the most generic behavior of this function should be returned.
-  FunctionModRefBehavior getModRefBehavior(const Function *F) override;
+  FunctionModRefBehavior getModRefBehavior(const Function *F);
 
   /// getModRefBehavior - Return the behavior of the specified function if
   /// called from the specified call site.  The call site may be null in which
   /// case the most generic behavior of this function should be returned.
-  FunctionModRefBehavior getModRefBehavior(ImmutableCallSite CS) override;
+  FunctionModRefBehavior getModRefBehavior(ImmutableCallSite CS);
 
 private:
   FunctionInfo *getFunctionInfo(const Function *F);
 
   void AnalyzeGlobals(Module &M);
   void AnalyzeCallGraph(CallGraph &CG, Module &M);
   bool AnalyzeUsesOfPointer(Value *V,
                             SmallPtrSetImpl<Function *> *Readers = nullptr,
                             SmallPtrSetImpl<Function *> *Writers = nullptr,
                             GlobalValue *OkayStoreDest = nullptr);
   bool AnalyzeIndirectGlobalMemory(GlobalValue *GV);
 
   bool isNonEscapingGlobalNoAlias(const GlobalValue *GV, const Value *V);
 };
 
+/// Analysis pass providing a never-invalidated alias analysis result.
+class GlobalsAA {
+public:
+  typedef GlobalsAAResult Result;
+
+  /// \brief Opaque, unique identifier for this analysis pass.
+  static void *ID() { return (void *)&PassID; }
+
+  GlobalsAAResult run(Module &M, AnalysisManager<Module> *AM);
+
+  /// \brief Provide access to a name for this pass for debugging purposes.
+  static StringRef name() { return "GlobalsAA"; }
+
+private:
+  static char PassID;
+};
+
+/// Legacy wrapper pass to provide the GlobalsAAResult object.
+class GlobalsAAWrapperPass : public ModulePass {
+  std::unique_ptr<GlobalsAAResult> Result;
+
+public:
+  static char ID;
+
+  GlobalsAAWrapperPass();
+
+  GlobalsAAResult &getResult() { return *Result; }
+  const GlobalsAAResult &getResult() const { return *Result; }
+
+  bool runOnModule(Module &M) override;
+  bool doFinalization(Module &M) override;
+  void getAnalysisUsage(AnalysisUsage &AU) const override;
+};
+
 //===--------------------------------------------------------------------===//
 //
-// createGlobalsModRefPass - This pass provides alias and mod/ref info for
+// createGlobalsAAWrapperPass - This pass provides alias and mod/ref info for
 // global values that do not have their addresses taken.
 //
-Pass *createGlobalsModRefPass();
-
+ModulePass *createGlobalsAAWrapperPass();
 }
 
 #endif

llvm/trunk/include/llvm/Analysis/Loads.h

 //===- Loads.h - Local load analysis --------------------------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file declares simple local analyses for load instructions.
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_ANALYSIS_LOADS_H
 #define LLVM_ANALYSIS_LOADS_H
 
+#include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/IR/BasicBlock.h"
 
 namespace llvm {
 
-class AliasAnalysis;
 class DataLayout;
 class MDNode;
 
 /// isSafeToLoadUnconditionally - Return true if we know that executing a load
 /// from this value cannot trap.  If it is not obviously safe to load from the
 /// specified pointer, we do a quick local scan of the basic block containing
 /// ScanFrom, to determine if the address is already accessed.
 bool isSafeToLoadUnconditionally(Value *V, Instruction *ScanFrom,

llvm/trunk/include/llvm/Analysis/LoopAccessAnalysis.h

 #include "llvm/IR/ValueHandle.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/raw_ostream.h"
 
 namespace llvm {
 
 class Value;
 class DataLayout;
-class AliasAnalysis;
 class ScalarEvolution;
 class Loop;
 class SCEV;
 
 /// Optimization analysis message produced during vectorization. Messages inform
 /// the user why vectorization did not occur.
 class LoopAccessReport {
   std::string Message;

llvm/trunk/include/llvm/Analysis/MemoryDependenceAnalysis.h

 #include "llvm/IR/ValueHandle.h"
 #include "llvm/Pass.h"
 
 namespace llvm {
   class Function;
   class FunctionPass;
   class Instruction;
   class CallSite;
-  class AliasAnalysis;
   class AssumptionCache;
   class MemoryDependenceAnalysis;
   class PredIteratorCache;
   class DominatorTree;
   class PHITransAddr;
 
   /// MemDepResult - A memory dependence query can return one of three different
   /// answers, described below.

llvm/trunk/include/llvm/Analysis/ObjCARCAliasAnalysis.h

 /// behavior-preserving may break these assumptions.
 ///
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_ANALYSIS_OBJCARCALIASANALYSIS_H
 #define LLVM_ANALYSIS_OBJCARCALIASANALYSIS_H
 
 #include "llvm/Analysis/AliasAnalysis.h"
+#include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/Pass.h"
 
 namespace llvm {
 namespace objcarc {
 
 /// \brief This is a simple alias analysis implementation that uses knowledge
 /// of ARC constructs to answer queries.
 ///
 /// TODO: This class could be generalized to know about other ObjC-specific
 /// tricks. Such as knowing that ivars in the non-fragile ABI are non-aliasing
 /// even though their offsets are dynamic.
-class ObjCARCAliasAnalysis : public ImmutablePass, public AliasAnalysis {
+class ObjCARCAAResult : public AAResultBase<ObjCARCAAResult> {
+  friend AAResultBase<ObjCARCAAResult>;
+
+  const DataLayout &DL;
+
+public:
+  explicit ObjCARCAAResult(const DataLayout &DL, const TargetLibraryInfo &TLI)
+      : AAResultBase(TLI), DL(DL) {}
+  ObjCARCAAResult(ObjCARCAAResult &&Arg)
+      : AAResultBase(std::move(Arg)), DL(Arg.DL) {}
+
+  /// Handle invalidation events from the new pass manager.
+  ///
+  /// By definition, this result is stateless and so remains valid.
+  bool invalidate(Function &, const PreservedAnalyses &) { return false; }
+
+  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB);
+  bool pointsToConstantMemory(const MemoryLocation &Loc, bool OrLocal);
+
+  using AAResultBase::getModRefBehavior;
+  FunctionModRefBehavior getModRefBehavior(const Function *F);
+
+  using AAResultBase::getModRefInfo;
+  ModRefInfo getModRefInfo(ImmutableCallSite CS, const MemoryLocation &Loc);
+};
+
+/// Analysis pass providing a never-invalidated alias analysis result.
+class ObjCARCAA {
 public:
-  static char ID; // Class identification, replacement for typeinfo
-  ObjCARCAliasAnalysis() : ImmutablePass(ID) {
-    initializeObjCARCAliasAnalysisPass(*PassRegistry::getPassRegistry());
-  }
+  typedef ObjCARCAAResult Result;
+
+  /// \brief Opaque, unique identifier for this analysis pass.
+  static void *ID() { return (void *)&PassID; }
+
+  ObjCARCAAResult run(Function &F, AnalysisManager<Function> *AM);
+
+  /// \brief Provide access to a name for this pass for debugging purposes.
+  static StringRef name() { return "ObjCARCAA"; }
 
 private:
-  bool doInitialization(Module &M) override;
+  static char PassID;
+};
 
-  /// This method is used when a pass implements an analysis interface through
-  /// multiple inheritance.  If needed, it should override this to adjust the
-  /// this pointer as needed for the specified pass info.
-  void *getAdjustedAnalysisPointer(const void *PI) override {
-    if (PI == &AliasAnalysis::ID)
-      return static_cast<AliasAnalysis *>(this);
-    return this;
-  }
+/// Legacy wrapper pass to provide the ObjCARCAAResult object.
+class ObjCARCAAWrapperPass : public ImmutablePass {
+  std::unique_ptr<ObjCARCAAResult> Result;
 
+public:
+  static char ID;
+
+  ObjCARCAAWrapperPass();
+
+  ObjCARCAAResult &getResult() { return *Result; }
+  const ObjCARCAAResult &getResult() const { return *Result; }
+
+  bool doInitialization(Module &M) override;
+  bool doFinalization(Module &M) override;
   void getAnalysisUsage(AnalysisUsage &AU) const override;
-  AliasResult alias(const MemoryLocation &LocA,
-                    const MemoryLocation &LocB) override;
-  bool pointsToConstantMemory(const MemoryLocation &Loc, bool OrLocal) override;
-  FunctionModRefBehavior getModRefBehavior(ImmutableCallSite CS) override;
-  FunctionModRefBehavior getModRefBehavior(const Function *F) override;
-  ModRefInfo getModRefInfo(ImmutableCallSite CS,
-                           const MemoryLocation &Loc) override;
-  ModRefInfo getModRefInfo(ImmutableCallSite CS1,
-                           ImmutableCallSite CS2) override;
 };
 
 } // namespace objcarc
 } // namespace llvm
 
 #endif

llvm/trunk/include/llvm/Analysis/Passes.h

namespace llvm {
   //
   // createAAEvalPass - This pass implements a simple N^2 alias analysis
   // accuracy evaluator.
   //
   FunctionPass *createAAEvalPass();
 
   //===--------------------------------------------------------------------===//
   //
-  // createNoAAPass - This pass implements a "I don't know" alias analysis.
-  //
-  ImmutablePass *createNoAAPass();
-
-  //===--------------------------------------------------------------------===//
-  //
-  // createObjCARCAliasAnalysisPass - This pass implements ObjC-ARC-based
+  // createObjCARCAAWrapperPass - This pass implements ObjC-ARC-based
   // alias analysis.
   //
-  ImmutablePass *createObjCARCAliasAnalysisPass();
+  ImmutablePass *createObjCARCAAWrapperPass();
 
   FunctionPass *createPAEvalPass();
 
   //===--------------------------------------------------------------------===//
   //
   /// createLazyValueInfoPass - This creates an instance of the LazyValueInfo
   /// pass.
   FunctionPass *createLazyValueInfoPass();

llvm/trunk/include/llvm/Analysis/ScalarEvolutionAliasAnalysis.h

 #include "llvm/IR/Function.h"
 #include "llvm/IR/Module.h"
 #include "llvm/Pass.h"
 
 namespace llvm {
 
 /// A simple alias analysis implementation that uses ScalarEvolution to answer
 /// queries.
-class ScalarEvolutionAliasAnalysis : public FunctionPass, public AliasAnalysis {
-  ScalarEvolution *SE;
+class SCEVAAResult : public AAResultBase<SCEVAAResult> {
+  ScalarEvolution &SE;
 
 public:
-  static char ID; // Class identification, replacement for typeinfo
-  ScalarEvolutionAliasAnalysis() : FunctionPass(ID), SE(nullptr) {
-    initializeScalarEvolutionAliasAnalysisPass(
-        *PassRegistry::getPassRegistry());
-  }
+  explicit SCEVAAResult(const TargetLibraryInfo &TLI, ScalarEvolution &SE)
+      : AAResultBase(TLI), SE(SE) {}
+  SCEVAAResult(SCEVAAResult &&Arg) : AAResultBase(std::move(Arg)), SE(Arg.SE) {}
 
-  /// This method is used when a pass implements an analysis interface through
-  /// multiple inheritance.
-  ///
-  /// If needed, it should override this to adjust the this pointer as needed
-  /// for the specified pass info.
-  void *getAdjustedAnalysisPointer(AnalysisID PI) override {
-    if (PI == &AliasAnalysis::ID)
-      return (AliasAnalysis *)this;
-    return this;
-  }
+  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB);
 
 private:
-  void getAnalysisUsage(AnalysisUsage &AU) const override;
-  bool runOnFunction(Function &F) override;
-  AliasResult alias(const MemoryLocation &LocA,
-                    const MemoryLocation &LocB) override;
-
   Value *GetBaseValue(const SCEV *S);
 };
 
-/// Creates an instance of \c ScalarEvolutionAliasAnalysis.
-FunctionPass *createScalarEvolutionAliasAnalysisPass();
+/// Analysis pass providing a never-invalidated alias analysis result.
+class SCEVAA {
+public:
+  typedef SCEVAAResult Result;
+
+  /// \brief Opaque, unique identifier for this analysis pass.
+  static void *ID() { return (void *)&PassID; }
+
+  SCEVAAResult run(Function &F, AnalysisManager<Function> *AM);
+
+  /// \brief Provide access to a name for this pass for debugging purposes.
+  static StringRef name() { return "SCEVAA"; }
+
+private:
+  static char PassID;
+};
+
+/// Legacy wrapper pass to provide the SCEVAAResult object.
+class SCEVAAWrapperPass : public FunctionPass {
+  std::unique_ptr<SCEVAAResult> Result;
+
+public:
+  static char ID;
+
+  SCEVAAWrapperPass();
+
+  SCEVAAResult &getResult() { return *Result; }
+  const SCEVAAResult &getResult() const { return *Result; }
+
+  bool runOnFunction(Function &F) override;
+  void getAnalysisUsage(AnalysisUsage &AU) const override;
+};
+
+/// Creates an instance of \c SCEVAAWrapperPass.
+FunctionPass *createSCEVAAWrapperPass();
 
 }
 
 #endif

llvm/trunk/include/llvm/Analysis/ScopedNoAliasAA.h

 #include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/Metadata.h"
 #include "llvm/IR/Module.h"
 #include "llvm/Pass.h"
 
 namespace llvm {
 
-/// ScopedNoAliasAA - This is a simple alias analysis
-/// implementation that uses scoped-noalias metadata to answer queries.
-class ScopedNoAliasAA : public ImmutablePass, public AliasAnalysis {
+/// A simple AA result which uses scoped-noalias metadata to answer queries.
+class ScopedNoAliasAAResult : public AAResultBase<ScopedNoAliasAAResult> {
+  friend AAResultBase<ScopedNoAliasAAResult>;
+
 public:
-  static char ID; // Class identification, replacement for typeinfo
-  ScopedNoAliasAA() : ImmutablePass(ID) {
-    initializeScopedNoAliasAAPass(*PassRegistry::getPassRegistry());
-  }
+  explicit ScopedNoAliasAAResult(const TargetLibraryInfo &TLI)
+      : AAResultBase(TLI) {}
+  ScopedNoAliasAAResult(ScopedNoAliasAAResult &&Arg)
+      : AAResultBase(std::move(Arg)) {}
 
-  bool doInitialization(Module &M) override;
+  /// Handle invalidation events from the new pass manager.
+  ///
+  /// By definition, this result is stateless and so remains valid.
+  bool invalidate(Function &, const PreservedAnalyses &) { return false; }
 
-  /// getAdjustedAnalysisPointer - This method is used when a pass implements
-  /// an analysis interface through multiple inheritance.  If needed, it
-  /// should override this to adjust the this pointer as needed for the
-  /// specified pass info.
-  void *getAdjustedAnalysisPointer(const void *PI) override {
-    if (PI == &AliasAnalysis::ID)
-      return (AliasAnalysis *)this;
-    return this;
-  }
+  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB);
+  ModRefInfo getModRefInfo(ImmutableCallSite CS, const MemoryLocation &Loc);
+  ModRefInfo getModRefInfo(ImmutableCallSite CS1, ImmutableCallSite CS2);
 
-protected:
+private:
   bool mayAliasInScopes(const MDNode *Scopes, const MDNode *NoAlias) const;
   void collectMDInDomain(const MDNode *List, const MDNode *Domain,
                          SmallPtrSetImpl<const MDNode *> &Nodes) const;
+};
+
+/// Analysis pass providing a never-invalidated alias analysis result.
+class ScopedNoAliasAA {
+public:
+  typedef ScopedNoAliasAAResult Result;
+
+  /// \brief Opaque, unique identifier for this analysis pass.
+  static void *ID() { return (void *)&PassID; }
+
+  ScopedNoAliasAAResult run(Function &F, AnalysisManager<Function> *AM);
+
+  /// \brief Provide access to a name for this pass for debugging purposes.
+  static StringRef name() { return "ScopedNoAliasAA"; }
 
 private:
+  static char PassID;
+};
+
+/// Legacy wrapper pass to provide the ScopedNoAliasAAResult object.
+class ScopedNoAliasAAWrapperPass : public ImmutablePass {
+  std::unique_ptr<ScopedNoAliasAAResult> Result;
+
+public:
+  static char ID;
+
+  ScopedNoAliasAAWrapperPass();
+
+  ScopedNoAliasAAResult &getResult() { return *Result; }
+  const ScopedNoAliasAAResult &getResult() const { return *Result; }
+
+  bool doInitialization(Module &M) override;
+  bool doFinalization(Module &M) override;
   void getAnalysisUsage(AnalysisUsage &AU) const override;
-  AliasResult alias(const MemoryLocation &LocA,
-                    const MemoryLocation &LocB) override;
-  bool pointsToConstantMemory(const MemoryLocation &Loc, bool OrLocal) override;
-  FunctionModRefBehavior getModRefBehavior(ImmutableCallSite CS) override;
-  FunctionModRefBehavior getModRefBehavior(const Function *F) override;
-  ModRefInfo getModRefInfo(ImmutableCallSite CS,
-                           const MemoryLocation &Loc) override;
-  ModRefInfo getModRefInfo(ImmutableCallSite CS1,
-                           ImmutableCallSite CS2) override;
 };
 
 //===--------------------------------------------------------------------===//
 //
-// createScopedNoAliasAAPass - This pass implements metadata-based
+// createScopedNoAliasAAWrapperPass - This pass implements metadata-based
 // scoped noalias analysis.
 //
-ImmutablePass *createScopedNoAliasAAPass();
-
+ImmutablePass *createScopedNoAliasAAWrapperPass();
 }
 
 #endif

llvm/trunk/include/llvm/Analysis/TypeBasedAliasAnalysis.h

 
 #include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/Metadata.h"
 #include "llvm/Pass.h"
 
 namespace llvm {
 
-/// TypeBasedAliasAnalysis - This is a simple alias analysis
-/// implementation that uses TypeBased to answer queries.
-class TypeBasedAliasAnalysis : public ImmutablePass, public AliasAnalysis {
+/// A simple AA result that uses TBAA metadata to answer queries.
+class TypeBasedAAResult : public AAResultBase<TypeBasedAAResult> {
+  friend AAResultBase<TypeBasedAAResult>;
+
 public:
-  static char ID; // Class identification, replacement for typeinfo
-  TypeBasedAliasAnalysis() : ImmutablePass(ID) {
-    initializeTypeBasedAliasAnalysisPass(*PassRegistry::getPassRegistry());
-  }
+  explicit TypeBasedAAResult(const TargetLibraryInfo &TLI)
+      : AAResultBase(TLI) {}
+  TypeBasedAAResult(TypeBasedAAResult &&Arg) : AAResultBase(std::move(Arg)) {}
 
-  bool doInitialization(Module &M) override;
+  /// Handle invalidation events from the new pass manager.
+  ///
+  /// By definition, this result is stateless and so remains valid.
+  bool invalidate(Function &, const PreservedAnalyses &) { return false; }
 
-  /// getAdjustedAnalysisPointer - This method is used when a pass implements
-  /// an analysis interface through multiple inheritance.  If needed, it
-  /// should override this to adjust the this pointer as needed for the
-  /// specified pass info.
-  void *getAdjustedAnalysisPointer(const void *PI) override {
-    if (PI == &AliasAnalysis::ID)
-      return (AliasAnalysis *)this;
-    return this;
-  }
+  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB);
+  bool pointsToConstantMemory(const MemoryLocation &Loc, bool OrLocal);
+  FunctionModRefBehavior getModRefBehavior(ImmutableCallSite CS);
+  FunctionModRefBehavior getModRefBehavior(const Function *F);
+  ModRefInfo getModRefInfo(ImmutableCallSite CS, const MemoryLocation &Loc);
+  ModRefInfo getModRefInfo(ImmutableCallSite CS1, ImmutableCallSite CS2);
 
+private:
   bool Aliases(const MDNode *A, const MDNode *B) const;
   bool PathAliases(const MDNode *A, const MDNode *B) const;
+};
+
+/// Analysis pass providing a never-invalidated alias analysis result.
+class TypeBasedAA {
+public:
+  typedef TypeBasedAAResult Result;
+
+  /// \brief Opaque, unique identifier for this analysis pass.
+  static void *ID() { return (void *)&PassID; }
+
+  TypeBasedAAResult run(Function &F, AnalysisManager<Function> *AM);
+
+  /// \brief Provide access to a name for this pass for debugging purposes.
+  static StringRef name() { return "TypeBasedAA"; }
 
 private:
+  static char PassID;
+};
+
+/// Legacy wrapper pass to provide the TypeBasedAAResult object.
+class TypeBasedAAWrapperPass : public ImmutablePass {
+  std::unique_ptr<TypeBasedAAResult> Result;
+
+public:
+  static char ID;
+
+  TypeBasedAAWrapperPass();
+
+  TypeBasedAAResult &getResult() { return *Result; }
+  const TypeBasedAAResult &getResult() const { return *Result; }
+
+  bool doInitialization(Module &M) override;
+  bool doFinalization(Module &M) override;
   void getAnalysisUsage(AnalysisUsage &AU) const override;
-  AliasResult alias(const MemoryLocation &LocA,
-                    const MemoryLocation &LocB) override;
-  bool pointsToConstantMemory(const MemoryLocation &Loc, bool OrLocal) override;
-  FunctionModRefBehavior getModRefBehavior(ImmutableCallSite CS) override;
-  FunctionModRefBehavior getModRefBehavior(const Function *F) override;
-  ModRefInfo getModRefInfo(ImmutableCallSite CS,
-                           const MemoryLocation &Loc) override;
-  ModRefInfo getModRefInfo(ImmutableCallSite CS1,
-                           ImmutableCallSite CS2) override;
 };
 
 //===--------------------------------------------------------------------===//
 //
-// createTypeBasedAliasAnalysisPass - This pass implements metadata-based
+// createTypeBasedAAWrapperPass - This pass implements metadata-based
 // type-based alias analysis.
 //
-ImmutablePass *createTypeBasedAliasAnalysisPass();
-
+ImmutablePass *createTypeBasedAAWrapperPass();
 }
 
 #endif

llvm/trunk/include/llvm/CodeGen/LiveIntervalAnalysis.h

 //
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_CODEGEN_LIVEINTERVALANALYSIS_H
 #define LLVM_CODEGEN_LIVEINTERVALANALYSIS_H
 
 #include "llvm/ADT/IndexedMap.h"
 #include "llvm/ADT/SmallVector.h"
+#include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/CodeGen/LiveInterval.h"
 #include "llvm/CodeGen/MachineBasicBlock.h"
 #include "llvm/CodeGen/MachineFunctionPass.h"
 #include "llvm/CodeGen/SlotIndexes.h"
 #include "llvm/Support/Allocator.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Target/TargetRegisterInfo.h"
 #include <cmath>
 #include <iterator>
 
 namespace llvm {
 
 extern cl::opt<bool> UseSegmentSetForPhysRegs;
 
-  class AliasAnalysis;
   class BitVector;
   class BlockFrequency;
   class LiveRangeCalc;
   class LiveVariables;
   class MachineDominatorTree;
   class MachineLoopInfo;
   class TargetRegisterInfo;
   class MachineRegisterInfo;

llvm/trunk/include/llvm/CodeGen/LiveRangeEdit.h

 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_CODEGEN_LIVERANGEEDIT_H
 #define LLVM_CODEGEN_LIVERANGEEDIT_H
 
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/SetVector.h"
 #include "llvm/ADT/SmallPtrSet.h"
+#include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/CodeGen/LiveInterval.h"
 #include "llvm/CodeGen/MachineRegisterInfo.h"
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Target/TargetSubtargetInfo.h"
 
 namespace llvm {
 
-class AliasAnalysis;
 class LiveIntervals;
 class MachineBlockFrequencyInfo;
 class MachineLoopInfo;
 class VirtRegMap;
 
 class LiveRangeEdit : private MachineRegisterInfo::Delegate {
 public:
   /// Callback methods for LiveRangeEdit owners.

llvm/trunk/include/llvm/CodeGen/MachineInstr.h

 
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/DenseMapInfo.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/ilist.h"
 #include "llvm/ADT/ilist_node.h"
 #include "llvm/ADT/iterator_range.h"
+#include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/CodeGen/MachineOperand.h"
 #include "llvm/IR/DebugInfo.h"
 #include "llvm/IR/DebugLoc.h"
 #include "llvm/IR/InlineAsm.h"
 #include "llvm/MC/MCInstrDesc.h"
 #include "llvm/Support/ArrayRecycler.h"
 #include "llvm/Target/TargetOpcodes.h"
 
 namespace llvm {
 
 template <typename T> class SmallVectorImpl;
-class AliasAnalysis;
 class TargetInstrInfo;
 class TargetRegisterClass;
 class TargetRegisterInfo;
 class MachineFunction;
 class MachineMemOperand;
 
 //===----------------------------------------------------------------------===//
 /// Representation of each machine instruction.

llvm/trunk/include/llvm/CodeGen/MachineScheduler.h

 //   Policy.<Flag> = true;
 // }
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_CODEGEN_MACHINESCHEDULER_H
 #define LLVM_CODEGEN_MACHINESCHEDULER_H
 
+#include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/CodeGen/MachinePassRegistry.h"
 #include "llvm/CodeGen/RegisterPressure.h"
 #include "llvm/CodeGen/ScheduleDAGInstrs.h"
 #include <memory>
 
 namespace llvm {
 
 extern cl::opt<bool> ForceTopDown;
 extern cl::opt<bool> ForceBottomUp;
 
-class AliasAnalysis;
 class LiveIntervals;
 class MachineDominatorTree;
 class MachineLoopInfo;
 class RegisterClassInfo;
 class ScheduleDAGInstrs;
 class SchedDFSResult;
 class ScheduleHazardRecognizer;
 

llvm/trunk/include/llvm/CodeGen/ScheduleDAG.h

 
 #ifndef LLVM_CODEGEN_SCHEDULEDAG_H
 #define LLVM_CODEGEN_SCHEDULEDAG_H
 
 #include "llvm/ADT/BitVector.h"
 #include "llvm/ADT/GraphTraits.h"
 #include "llvm/ADT/PointerIntPair.h"
 #include "llvm/ADT/SmallVector.h"
+#include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/CodeGen/MachineInstr.h"
 #include "llvm/Target/TargetLowering.h"
 
 namespace llvm {
-  class AliasAnalysis;
   class SUnit;
   class MachineConstantPool;
   class MachineFunction;
   class MachineRegisterInfo;
   class MachineInstr;
   struct MCSchedClassDesc;
   class TargetRegisterInfo;
   class ScheduleDAG;

llvm/trunk/include/llvm/CodeGen/SelectionDAG.h

 
 #ifndef LLVM_CODEGEN_SELECTIONDAG_H
 #define LLVM_CODEGEN_SELECTIONDAG_H
 
 #include "llvm/ADT/DenseSet.h"
 #include "llvm/ADT/SetVector.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/ilist.h"
+#include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/CodeGen/DAGCombine.h"
 #include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/SelectionDAGNodes.h"
 #include "llvm/Support/RecyclingAllocator.h"
 #include "llvm/Target/TargetMachine.h"
 #include <cassert>
 #include <map>
 #include <string>
 #include <vector>
 
 namespace llvm {
 
-class AliasAnalysis;
 class MachineConstantPoolValue;
 class MachineFunction;
 class MDNode;
 class SDDbgValue;
 class TargetLowering;
 class TargetSelectionDAGInfo;
 
 class SDVTListNode : public FoldingSetNode {

llvm/trunk/include/llvm/InitializePasses.h

 
 /// initializeCodeGen - Initialize all passes linked into the CodeGen library.
 void initializeTarget(PassRegistry&);
 
 void initializeAAEvalPass(PassRegistry&);
 void initializeAddDiscriminatorsPass(PassRegistry&);
 void initializeADCEPass(PassRegistry&);
 void initializeBDCEPass(PassRegistry&);
-void initializeAliasAnalysisAnalysisGroup(PassRegistry&);
-void initializeAliasAnalysisCounterPass(PassRegistry&);
 void initializeAliasSetPrinterPass(PassRegistry&);
 void initializeAlwaysInlinerPass(PassRegistry&);
 void initializeArgPromotionPass(PassRegistry&);
 void initializeAtomicExpandPass(PassRegistry&);
 void initializeSampleProfileLoaderPass(PassRegistry&);
 void initializeAlignmentFromAssumptionsPass(PassRegistry&);
 void initializeBarrierNoopPass(PassRegistry&);
-void initializeBasicAliasAnalysisPass(PassRegistry&);
+void initializeBasicAAWrapperPassPass(PassRegistry&);
 void initializeCallGraphWrapperPassPass(PassRegistry &);
 void initializeBlockExtractorPassPass(PassRegistry&);
 void initializeBlockFrequencyInfoWrapperPassPass(PassRegistry&);
 void initializeBoundsCheckingPass(PassRegistry&);
 void initializeBranchFolderPassPass(PassRegistry&);
 void initializeBranchProbabilityInfoWrapperPassPass(PassRegistry&);
 void initializeBreakCriticalEdgesPass(PassRegistry&);
 void initializeCallGraphPrinterPass(PassRegistry&);
 void initializeCallGraphViewerPass(PassRegistry&);
 void initializeCFGOnlyPrinterPass(PassRegistry&);
 void initializeCFGOnlyViewerPass(PassRegistry&);
 void initializeCFGPrinterPass(PassRegistry&);
 void initializeCFGSimplifyPassPass(PassRegistry&);
-void initializeCFLAliasAnalysisPass(PassRegistry&);
+void initializeCFLAAWrapperPassPass(PassRegistry&);
 void initializeForwardControlFlowIntegrityPass(PassRegistry&);
 void initializeFlattenCFGPassPass(PassRegistry&);
 void initializeStructurizeCFGPass(PassRegistry&);
 void initializeCFGViewerPass(PassRegistry&);
 void initializeConstantHoistingPass(PassRegistry&);
 void initializeCodeGenPreparePass(PassRegistry&);
 void initializeConstantMergePass(PassRegistry&);
 void initializeConstantPropagationPass(PassRegistry&);

 void initializeDomOnlyViewerPass(PassRegistry&);
 void initializeDomPrinterPass(PassRegistry&);
 void initializeDomViewerPass(PassRegistry&);
 void initializeDominanceFrontierPass(PassRegistry&);
 void initializeDominatorTreeWrapperPassPass(PassRegistry&);
 void initializeEarlyIfConverterPass(PassRegistry&);
 void initializeEdgeBundlesPass(PassRegistry&);
 void initializeExpandPostRAPass(PassRegistry&);
+void initializeAAResultsWrapperPassPass(PassRegistry &);
 void initializeGCOVProfilerPass(PassRegistry&);
 void initializeInstrProfilingPass(PassRegistry&);
 void initializeAddressSanitizerPass(PassRegistry&);
 void initializeAddressSanitizerModulePass(PassRegistry&);
 void initializeMemorySanitizerPass(PassRegistry&);
 void initializeThreadSanitizerPass(PassRegistry&);
 void initializeSanitizerCoverageModulePass(PassRegistry&);
 void initializeDataFlowSanitizerPass(PassRegistry&);
 void initializeScalarizerPass(PassRegistry&);
 void initializeEarlyCSELegacyPassPass(PassRegistry &);
 void initializeEliminateAvailableExternallyPass(PassRegistry&);
 void initializeExpandISelPseudosPass(PassRegistry&);
 void initializeFunctionAttrsPass(PassRegistry&);
 void initializeGCMachineCodeAnalysisPass(PassRegistry&);
 void initializeGCModuleInfoPass(PassRegistry&);
 void initializeGVNPass(PassRegistry&);
 void initializeGlobalDCEPass(PassRegistry&);
 void initializeGlobalOptPass(PassRegistry&);
-void initializeGlobalsModRefPass(PassRegistry&);
+void initializeGlobalsAAWrapperPassPass(PassRegistry&);
 void initializeIPCPPass(PassRegistry&);
 void initializeIPSCCPPass(PassRegistry&);
 void initializeIVUsersPass(PassRegistry&);
 void initializeIfConverterPass(PassRegistry&);
 void initializeInductiveRangeCheckEliminationPass(PassRegistry&);
 void initializeIndVarSimplifyPass(PassRegistry&);
 void initializeInlineCostAnalysisPass(PassRegistry&);
 void initializeInstructionCombiningPassPass(PassRegistry&);

 void initializeMemDerefPrinterPass(PassRegistry&);
 void initializeMemoryDependenceAnalysisPass(PassRegistry&);
 void initializeMergedLoadStoreMotionPass(PassRegistry &);
 void initializeMetaRenamerPass(PassRegistry&);
 void initializeMergeFunctionsPass(PassRegistry&);
 void initializeModuleDebugInfoPrinterPass(PassRegistry&);
 void initializeNaryReassociatePass(PassRegistry&);
 void initializeNoAAPass(PassRegistry&);
-void initializeObjCARCAliasAnalysisPass(PassRegistry&);
+void initializeObjCARCAAWrapperPassPass(PassRegistry&);
 void initializeObjCARCAPElimPass(PassRegistry&);
 void initializeObjCARCExpandPass(PassRegistry&);
 void initializeObjCARCContractPass(PassRegistry&);
 void initializeObjCARCOptPass(PassRegistry&);
 void initializePAEvalPass(PassRegistry &);
 void initializeOptimizePHIsPass(PassRegistry&);
 void initializePartiallyInlineLibCallsPass(PassRegistry&);
 void initializePEIPass(PassRegistry&);

 void initializeRegionPrinterPass(PassRegistry&);
 void initializeRegionViewerPass(PassRegistry&);
 void initializeRewriteStatepointsForGCPass(PassRegistry&);
 void initializeSafeStackPass(PassRegistry&);
 void initializeSCCPPass(PassRegistry&);
 void initializeSROAPass(PassRegistry&);
 void initializeSROA_DTPass(PassRegistry&);
 void initializeSROA_SSAUpPass(PassRegistry&);
-void initializeScalarEvolutionAliasAnalysisPass(PassRegistry&);
+void initializeSCEVAAWrapperPassPass(PassRegistry&);
 void initializeScalarEvolutionWrapperPassPass(PassRegistry&);
 void initializeShrinkWrapPass(PassRegistry &);
 void initializeSimpleInlinerPass(PassRegistry&);
 void initializeShadowStackGCLoweringPass(PassRegistry&);  
 void initializeRegisterCoalescerPass(PassRegistry&);
 void initializeSingleLoopExtractorPass(PassRegistry&);
 void initializeSinkingPass(PassRegistry&);
 void initializeSeparateConstOffsetFromGEPPass(PassRegistry &);

 void initializeStripSymbolsPass(PassRegistry&);
 void initializeTailCallElimPass(PassRegistry&);
 void initializeTailDuplicatePassPass(PassRegistry&);
 void initializeTargetPassConfigPass(PassRegistry&);
 void initializeTargetTransformInfoWrapperPassPass(PassRegistry &);
 void initializeTargetLibraryInfoWrapperPassPass(PassRegistry &);
 void initializeAssumptionCacheTrackerPass(PassRegistry &);
 void initializeTwoAddressInstructionPassPass(PassRegistry&);
-void initializeTypeBasedAliasAnalysisPass(PassRegistry&);
-void initializeScopedNoAliasAAPass(PassRegistry&);
+void initializeTypeBasedAAWrapperPassPass(PassRegistry&);
+void initializeScopedNoAliasAAWrapperPassPass(PassRegistry&);
 void initializeUnifyFunctionExitNodesPass(PassRegistry&);
 void initializeUnreachableBlockElimPass(PassRegistry&);
 void initializeUnreachableMachineBlockElimPass(PassRegistry&);
 void initializeVerifierLegacyPassPass(PassRegistry&);
 void initializeVirtRegMapPass(PassRegistry&);
 void initializeVirtRegRewriterPass(PassRegistry&);
 void initializeInstSimplifierPass(PassRegistry&);
 void initializeUnpackMachineBundlesPass(PassRegistry&);

llvm/trunk/include/llvm/LinkAllPasses.h

 //
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_LINKALLPASSES_H
 #define LLVM_LINKALLPASSES_H
 
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Analysis/AliasSetTracker.h"
-#include "llvm/Analysis/AliasAnalysisCounter.h"
 #include "llvm/Analysis/BasicAliasAnalysis.h"
 #include "llvm/Analysis/CFLAliasAnalysis.h"
 #include "llvm/Analysis/CallPrinter.h"
 #include "llvm/Analysis/DomPrinter.h"
 #include "llvm/Analysis/GlobalsModRef.h"
 #include "llvm/Analysis/IntervalPartition.h"
 #include "llvm/Analysis/Lint.h"
 #include "llvm/Analysis/Passes.h"
ForcePassLinking() {
       // yet is effectively a NO-OP. As the compiler isn't smart enough
       // to know that getenv() never returns -1, this will do the job.
       if (std::getenv("bar") != (char*) -1)
         return;
 
       (void) llvm::createAAEvalPass();
       (void) llvm::createAggressiveDCEPass();
       (void) llvm::createBitTrackingDCEPass();
-      (void) llvm::createAliasAnalysisCounterPass();
       (void) llvm::createArgumentPromotionPass();
       (void) llvm::createAlignmentFromAssumptionsPass();
-      (void) llvm::createBasicAliasAnalysisPass();
-      (void) llvm::createScalarEvolutionAliasAnalysisPass();
-      (void) llvm::createTypeBasedAliasAnalysisPass();
-      (void) llvm::createScopedNoAliasAAPass();
+      (void) llvm::createBasicAAWrapperPass();
+      (void) llvm::createSCEVAAWrapperPass();
+      (void) llvm::createTypeBasedAAWrapperPass();
+      (void) llvm::createScopedNoAliasAAWrapperPass();
       (void) llvm::createBoundsCheckingPass();
       (void) llvm::createBreakCriticalEdgesPass();
       (void) llvm::createCallGraphPrinterPass();
       (void) llvm::createCallGraphViewerPass();
       (void) llvm::createCFGSimplificationPass();
-      (void) llvm::createCFLAliasAnalysisPass();
+      (void) llvm::createCFLAAWrapperPass();
       (void) llvm::createStructurizeCFGPass();
       (void) llvm::createConstantMergePass();
       (void) llvm::createConstantPropagationPass();
       (void) llvm::createCostModelAnalysisPass();
       (void) llvm::createDeadArgEliminationPass();
       (void) llvm::createDeadCodeEliminationPass();
       (void) llvm::createDeadInstEliminationPass();
       (void) llvm::createDeadStoreEliminationPass();
       (void) llvm::createDependenceAnalysisPass();
       (void) llvm::createDivergenceAnalysisPass();
       (void) llvm::createDomOnlyPrinterPass();
       (void) llvm::createDomPrinterPass();
       (void) llvm::createDomOnlyViewerPass();
       (void) llvm::createDomViewerPass();
       (void) llvm::createGCOVProfilerPass();
       (void) llvm::createInstrProfilingPass();
       (void) llvm::createFunctionInliningPass();
       (void) llvm::createAlwaysInlinerPass();
       (void) llvm::createGlobalDCEPass();
       (void) llvm::createGlobalOptimizerPass();
-      (void) llvm::createGlobalsModRefPass();
+      (void) llvm::createGlobalsAAWrapperPass();
       (void) llvm::createIPConstantPropagationPass();
       (void) llvm::createIPSCCPPass();
       (void) llvm::createInductiveRangeCheckEliminationPass();
       (void) llvm::createIndVarSimplifyPass();
       (void) llvm::createInstructionCombiningPass();
       (void) llvm::createInternalizePass();
       (void) llvm::createLCSSAPass();
       (void) llvm::createLICMPass();
       (void) llvm::createLazyValueInfoPass();
       (void) llvm::createLoopExtractorPass();
       (void) llvm::createLoopInterchangePass();
       (void) llvm::createLoopSimplifyPass();
       (void) llvm::createLoopStrengthReducePass();
       (void) llvm::createLoopRerollPass();
       (void) llvm::createLoopUnrollPass();
       (void) llvm::createLoopUnswitchPass();
       (void) llvm::createLoopIdiomPass();
       (void) llvm::createLoopRotatePass();
       (void) llvm::createLowerExpectIntrinsicPass();
       (void) llvm::createLowerInvokePass();
       (void) llvm::createLowerSwitchPass();
       (void) llvm::createNaryReassociatePass();
-      (void) llvm::createNoAAPass();
-      (void) llvm::createObjCARCAliasAnalysisPass();
+      (void) llvm::createObjCARCAAWrapperPass();
       (void) llvm::createObjCARCAPElimPass();
       (void) llvm::createObjCARCExpandPass();
       (void) llvm::createObjCARCContractPass();
       (void) llvm::createObjCARCOptPass();
       (void) llvm::createPAEvalPass();
       (void) llvm::createPromoteMemoryToRegisterPass();
       (void) llvm::createDemoteRegisterToMemoryPass();
       (void) llvm::createPruneEHPass();

llvm/trunk/include/llvm/Transforms/Utils/Cloning.h

 //
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_TRANSFORMS_UTILS_CLONING_H
 #define LLVM_TRANSFORMS_UTILS_CLONING_H
 
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/Twine.h"
+#include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/IR/ValueHandle.h"
 #include "llvm/IR/ValueMap.h"
 #include "llvm/Transforms/Utils/ValueMapper.h"
 #include <functional>
 
 namespace llvm {
 
 class Module;
 class Function;
 class Instruction;
 class Pass;
 class LPPassManager;
 class BasicBlock;
 class Value;
 class CallInst;
 class InvokeInst;
 class ReturnInst;
 class CallSite;
 class Trace;
 class CallGraph;
 class DataLayout;
 class Loop;
 class LoopInfo;
 class AllocaInst;
-class AliasAnalysis;
 class AssumptionCacheTracker;
 class DominatorTree;
 
 /// CloneModule - Return an exact copy of the specified module
 ///
 Module *CloneModule(const Module *M);
 Module *CloneModule(const Module *M, ValueToValueMapTy &VMap);
 
void CloneAndPruneFunctionInto(Function *NewFunc, const Function *OldFunc,
                                ClonedCodeInfo *CodeInfo = nullptr,
                                Instruction *TheCall = nullptr);
 
 /// InlineFunctionInfo - This class captures the data input to the
 /// InlineFunction call, and records the auxiliary results produced by it.
 class InlineFunctionInfo {
 public:
   explicit InlineFunctionInfo(CallGraph *cg = nullptr,
-                              AliasAnalysis *AA = nullptr,
                               AssumptionCacheTracker *ACT = nullptr)
-      : CG(cg), AA(AA), ACT(ACT) {}
+      : CG(cg), ACT(ACT) {}
 
   /// CG - If non-null, InlineFunction will update the callgraph to reflect the
   /// changes it makes.
   CallGraph *CG;
-  AliasAnalysis *AA;
   AssumptionCacheTracker *ACT;
 
   /// StaticAllocas - InlineFunction fills this in with all static allocas that
   /// get copied into the caller.
   SmallVector<AllocaInst *, 4> StaticAllocas;
 
   /// InlinedCalls - InlineFunction fills this in with callsites that were
   /// inlined from the callee.  This is only filled in if CG is non-null.

 /// though.
 ///
 /// Note that this only does one level of inlining.  For example, if the
 /// instruction 'call B' is inlined, and 'B' calls 'C', then the call to 'C' now
 /// exists in the instruction stream.  Similarly this will inline a recursive
 /// function by one level.
 ///
 bool InlineFunction(CallInst *C, InlineFunctionInfo &IFI,
-                    bool InsertLifetime = true);
+                    AAResults *CalleeAAR = nullptr, bool InsertLifetime = true);
 bool InlineFunction(InvokeInst *II, InlineFunctionInfo &IFI,
-                    bool InsertLifetime = true);
+                    AAResults *CalleeAAR = nullptr, bool InsertLifetime = true);
 bool InlineFunction(CallSite CS, InlineFunctionInfo &IFI,
-                    bool InsertLifetime = true);
+                    AAResults *CalleeAAR = nullptr, bool InsertLifetime = true);
 
 /// \brief Clones a loop \p OrigLoop.  Returns the loop and the blocks in \p
 /// Blocks.
 ///
 /// Updates LoopInfo and DominatorTree assuming the loop is dominated by block
 /// \p LoopDomBB.  Insert the new blocks before block specified in \p Before.
 Loop *cloneLoopWithPreheader(BasicBlock *Before, BasicBlock *LoopDomBB,
                              Loop *OrigLoop, ValueToValueMapTy &VMap,

llvm/trunk/include/llvm/Transforms/Utils/Local.h

 // This family of functions perform various local transformations to the
 // program.
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_TRANSFORMS_UTILS_LOCAL_H
 #define LLVM_TRANSFORMS_UTILS_LOCAL_H
 
+#include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/Dominators.h"
 #include "llvm/IR/GetElementPtrTypeIterator.h"
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/Operator.h"
 
 namespace llvm {
 

 class PHINode;
 class AllocaInst;
 class AssumptionCache;
 class ConstantExpr;
 class DataLayout;
 class TargetLibraryInfo;
 class TargetTransformInfo;
 class DIBuilder;
-class AliasAnalysis;
 class DominatorTree;
 
 template<typename T> class SmallVectorImpl;
 
 //===----------------------------------------------------------------------===//
 //  Local constant propagation.
 //
 

llvm/trunk/include/llvm/Transforms/Utils/LoopUtils.h

 // This file defines some loop transformation utilities.
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_TRANSFORMS_UTILS_LOOPUTILS_H
 #define LLVM_TRANSFORMS_UTILS_LOOPUTILS_H
 
 #include "llvm/ADT/SmallVector.h"
+#include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/IR/Dominators.h"
 #include "llvm/IR/IRBuilder.h"
 
 namespace llvm {
-class AliasAnalysis;
 class AliasSet;
 class AliasSetTracker;
 class AssumptionCache;
 class BasicBlock;
 class DataLayout;
 class DominatorTree;
 class Loop;
 class LoopInfo;

llvm/trunk/lib/Analysis/AliasAnalysis.cpp

 // it is very fast, and makes a nice clean default implementation.  Because it
 // handles lots of little corner cases, other, more complex, alias analysis
 // implementations may choose to rely on this pass to resolve these simple and
 // easy cases.
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Analysis/AliasAnalysis.h"
+#include "llvm/Analysis/BasicAliasAnalysis.h"
 #include "llvm/Analysis/CFG.h"
+#include "llvm/Analysis/CFLAliasAnalysis.h"
 #include "llvm/Analysis/CaptureTracking.h"
+#include "llvm/Analysis/GlobalsModRef.h"
+#include "llvm/Analysis/ObjCARCAliasAnalysis.h"
+#include "llvm/Analysis/ScalarEvolutionAliasAnalysis.h"
+#include "llvm/Analysis/ScopedNoAliasAA.h"
 #include "llvm/Analysis/TargetLibraryInfo.h"
+#include "llvm/Analysis/TypeBasedAliasAnalysis.h"
 #include "llvm/Analysis/ValueTracking.h"
 #include "llvm/IR/BasicBlock.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/Dominators.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/IntrinsicInst.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/Type.h"
 #include "llvm/Pass.h"
 using namespace llvm;
 
-// Register the AliasAnalysis interface, providing a nice name to refer to.
-INITIALIZE_ANALYSIS_GROUP(AliasAnalysis, "Alias Analysis", NoAA)
-char AliasAnalysis::ID = 0;
+/// Allow disabling BasicAA from the AA results. This is particularly useful
+/// when testing to isolate a single AA implementation.
+static cl::opt<bool> DisableBasicAA("disable-basicaa", cl::Hidden,
+                                    cl::init(false));
+
+AAResults::AAResults(AAResults &&Arg) : AAs(std::move(Arg.AAs)) {
+  for (auto &AA : AAs)
+    AA->setAAResults(this);
+}
+
+AAResults &AAResults::operator=(AAResults &&Arg) {
+  AAs = std::move(Arg.AAs);
+  for (auto &AA : AAs)
+    AA->setAAResults(this);
+  return *this;
+}
+
+AAResults::~AAResults() {
+// FIXME; It would be nice to at least clear out the pointers back to this
+// aggregation here, but we end up with non-nesting lifetimes in the legacy
+// pass manager that prevent this from working. In the legacy pass manager
+// we'll end up with dangling references here in some cases.
+#if 0
+  for (auto &AA : AAs)
+    AA->setAAResults(nullptr);
+#endif
+}
 
 //===----------------------------------------------------------------------===//
 // Default chaining methods
 //===----------------------------------------------------------------------===//
 
-AliasResult AliasAnalysis::alias(const MemoryLocation &LocA,
-                                 const MemoryLocation &LocB) {
-  assert(AA && "AA didn't call InitializeAliasAnalysis in its run method!");
-  return AA->alias(LocA, LocB);
+AliasResult AAResults::alias(const MemoryLocation &LocA,
+  for (const auto &AA : AAs) {
+    auto Result = AA->alias(LocA, LocB);
+    if (Result != MayAlias)
+      return Result;
+  }
+  return MayAlias;
 }
 
-bool AliasAnalysis::pointsToConstantMemory(const MemoryLocation &Loc,
-                                           bool OrLocal) {
-  assert(AA && "AA didn't call InitializeAliasAnalysis in its run method!");
-  return AA->pointsToConstantMemory(Loc, OrLocal);
+bool AAResults::pointsToConstantMemory(const MemoryLocation &Loc,
+  for (const auto &AA : AAs)
+    if (AA->pointsToConstantMemory(Loc, OrLocal))
+      return true;
+
+  return false;
 }
 
-ModRefInfo AliasAnalysis::getArgModRefInfo(ImmutableCallSite CS,
-                                           unsigned ArgIdx) {
-  assert(AA && "AA didn't call InitializeAliasAnalysis in its run method!");
-  return AA->getArgModRefInfo(CS, ArgIdx);
+ModRefInfo AAResults::getArgModRefInfo(ImmutableCallSite CS, unsigned ArgIdx) {
+  ModRefInfo Result = MRI_ModRef;
+
+  for (const auto &AA : AAs) {
+    Result = ModRefInfo(Result & AA->getArgModRefInfo(CS, ArgIdx));
+
+    // Early-exit the moment we reach the bottom of the lattice.
+    if (Result == MRI_NoModRef)
+      return Result;
   }
 
-ModRefInfo AliasAnalysis::getModRefInfo(Instruction *I,
-                                        ImmutableCallSite Call) {
+  return Result;
+}
+
+ModRefInfo AAResults::getModRefInfo(Instruction *I, ImmutableCallSite Call) {
   // We may have two calls
   if (auto CS = ImmutableCallSite(I)) {
     // Check if the two calls modify the same memory
     return getModRefInfo(Call, CS);
   } else {
     // Otherwise, check if the call modifies or references the
     // location this memory access defines.  The best we can say
     // is that if the call references what this instruction
     // defines, it must be clobbered by this location.
     const MemoryLocation DefLoc = MemoryLocation::get(I);
     if (getModRefInfo(Call, DefLoc) != MRI_NoModRef)
       return MRI_ModRef;
   }
   return MRI_NoModRef;
 }
 
-ModRefInfo AliasAnalysis::getModRefInfo(ImmutableCallSite CS,
-                                        const MemoryLocation &Loc) {
-  assert(AA && "AA didn't call InitializeAliasAnalysis in its run method!");
+ModRefInfo AAResults::getModRefInfo(ImmutableCallSite CS,
+  ModRefInfo Result = MRI_ModRef;
 
-  auto MRB = getModRefBehavior(CS);
-  if (MRB == FMRB_DoesNotAccessMemory)
-    return MRI_NoModRef;
+  for (const auto &AA : AAs) {
+    Result = ModRefInfo(Result & AA->getModRefInfo(CS, Loc));
 
-  ModRefInfo Mask = MRI_ModRef;
-  if (onlyReadsMemory(MRB))
-    Mask = MRI_Ref;
-
-  if (onlyAccessesArgPointees(MRB)) {
-    bool doesAlias = false;
-    ModRefInfo AllArgsMask = MRI_NoModRef;
-    if (doesAccessArgPointees(MRB)) {
-      for (ImmutableCallSite::arg_iterator AI = CS.arg_begin(), AE = CS.arg_end();
-           AI != AE; ++AI) {
-        const Value *Arg = *AI;
-        if (!Arg->getType()->isPointerTy())
-          continue;
-        unsigned ArgIdx = std::distance(CS.arg_begin(), AI);
-        MemoryLocation ArgLoc =
-            MemoryLocation::getForArgument(CS, ArgIdx, *TLI);
-        if (!isNoAlias(ArgLoc, Loc)) {
-          ModRefInfo ArgMask = getArgModRefInfo(CS, ArgIdx);
-          doesAlias = true;
-          AllArgsMask = ModRefInfo(AllArgsMask | ArgMask);
-        }
-      }
-    }
-    if (!doesAlias)
-      return MRI_NoModRef;
-    Mask = ModRefInfo(Mask & AllArgsMask);
+    // Early-exit the moment we reach the bottom of the lattice.
+    if (Result == MRI_NoModRef)
+      return Result;
   }
 
-  // If Loc is a constant memory location, the call definitely could not
-  // modify the memory location.
-  if ((Mask & MRI_Mod) && pointsToConstantMemory(Loc))
-    Mask = ModRefInfo(Mask & ~MRI_Mod);
-
-  // If this is the end of the chain, don't forward.
-  if (!AA) return Mask;
-
-  // Otherwise, fall back to the next AA in the chain. But we can merge
-  // in any mask we've managed to compute.
-  return ModRefInfo(AA->getModRefInfo(CS, Loc) & Mask);
+  return Result;
 }
 
-ModRefInfo AliasAnalysis::getModRefInfo(ImmutableCallSite CS1,
-                                        ImmutableCallSite CS2) {
-  assert(AA && "AA didn't call InitializeAliasAnalysis in its run method!");
-
-  // If CS1 or CS2 are readnone, they don't interact.
-  auto CS1B = getModRefBehavior(CS1);
-  if (CS1B == FMRB_DoesNotAccessMemory)
-    return MRI_NoModRef;
-
-  auto CS2B = getModRefBehavior(CS2);
-  if (CS2B == FMRB_DoesNotAccessMemory)
-    return MRI_NoModRef;
-
-  // If they both only read from memory, there is no dependence.
-  if (onlyReadsMemory(CS1B) && onlyReadsMemory(CS2B))
-    return MRI_NoModRef;
+ModRefInfo AAResults::getModRefInfo(ImmutableCallSite CS1,
+  ModRefInfo Result = MRI_ModRef;
 
-  ModRefInfo Mask = MRI_ModRef;
+  for (const auto &AA : AAs) {
+    Result = ModRefInfo(Result & AA->getModRefInfo(CS1, CS2));
 
-  // If CS1 only reads memory, the only dependence on CS2 can be
-  // from CS1 reading memory written by CS2.
-  if (onlyReadsMemory(CS1B))
-    Mask = ModRefInfo(Mask & MRI_Ref);
-
-  // If CS2 only access memory through arguments, accumulate the mod/ref
-  // information from CS1's references to the memory referenced by
-  // CS2's arguments.
-  if (onlyAccessesArgPointees(CS2B)) {
-    ModRefInfo R = MRI_NoModRef;
-    if (doesAccessArgPointees(CS2B)) {
-      for (ImmutableCallSite::arg_iterator
-           I = CS2.arg_begin(), E = CS2.arg_end(); I != E; ++I) {
-        const Value *Arg = *I;
-        if (!Arg->getType()->isPointerTy())
-          continue;
-        unsigned CS2ArgIdx = std::distance(CS2.arg_begin(), I);
-        auto CS2ArgLoc = MemoryLocation::getForArgument(CS2, CS2ArgIdx, *TLI);
-
-        // ArgMask indicates what CS2 might do to CS2ArgLoc, and the dependence of
-        // CS1 on that location is the inverse.
-        ModRefInfo ArgMask = getArgModRefInfo(CS2, CS2ArgIdx);
-        if (ArgMask == MRI_Mod)
-          ArgMask = MRI_ModRef;
-        else if (ArgMask == MRI_Ref)
-          ArgMask = MRI_Mod;
-
-        R = ModRefInfo((R | (getModRefInfo(CS1, CS2ArgLoc) & ArgMask)) & Mask);
-        if (R == Mask)
-          break;
-      }
-    }
-    return R;
-  }
+    // Early-exit the moment we reach the bottom of the lattice.
+    if (Result == MRI_NoModRef)
+      return Result;
+
+  return Result;
 
-  // If CS1 only accesses memory through arguments, check if CS2 references
-  // any of the memory referenced by CS1's arguments. If not, return NoModRef.
-  if (onlyAccessesArgPointees(CS1B)) {
-    ModRefInfo R = MRI_NoModRef;
-    if (doesAccessArgPointees(CS1B)) {
-      for (ImmutableCallSite::arg_iterator
-           I = CS1.arg_begin(), E = CS1.arg_end(); I != E; ++I) {
-        const Value *Arg = *I;
-        if (!Arg->getType()->isPointerTy())
-          continue;
-        unsigned CS1ArgIdx = std::distance(CS1.arg_begin(), I);
-        auto CS1ArgLoc = MemoryLocation::getForArgument(CS1, CS1ArgIdx, *TLI);
+FunctionModRefBehavior AAResults::getModRefBehavior(ImmutableCallSite CS) {
+  FunctionModRefBehavior Result = FMRB_UnknownModRefBehavior;
 
-        // ArgMask indicates what CS1 might do to CS1ArgLoc; if CS1 might Mod
-        // CS1ArgLoc, then we care about either a Mod or a Ref by CS2. If CS1
-        // might Ref, then we care only about a Mod by CS2.
-        ModRefInfo ArgMask = getArgModRefInfo(CS1, CS1ArgIdx);
-        ModRefInfo ArgR = getModRefInfo(CS2, CS1ArgLoc);
-        if (((ArgMask & MRI_Mod) != MRI_NoModRef &&
-             (ArgR & MRI_ModRef) != MRI_NoModRef) ||
-            ((ArgMask & MRI_Ref) != MRI_NoModRef &&
-             (ArgR & MRI_Mod) != MRI_NoModRef))
-          R = ModRefInfo((R | ArgMask) & Mask);
+  for (const auto &AA : AAs) {
+    Result = FunctionModRefBehavior(Result & AA->getModRefBehavior(CS));
 
-        if (R == Mask)
-          break;
-      }
-    }
-    return R;
+    // Early-exit the moment we reach the bottom of the lattice.
+    if (Result == FMRB_DoesNotAccessMemory)
+      return Result;
   }
 
-  // If this is the end of the chain, don't forward.
-  if (!AA) return Mask;
-
-  // Otherwise, fall back to the next AA in the chain. But we can merge
-  // in any mask we've managed to compute.
-  return ModRefInfo(AA->getModRefInfo(CS1, CS2) & Mask);
+  return Result;
 }
 
-FunctionModRefBehavior AliasAnalysis::getModRefBehavior(ImmutableCallSite CS) {
-  assert(AA && "AA didn't call InitializeAliasAnalysis in its run method!");
-
-  auto Min = FMRB_UnknownModRefBehavior;
+FunctionModRefBehavior AAResults::getModRefBehavior(const Function *F) {
+  FunctionModRefBehavior Result = FMRB_UnknownModRefBehavior;
 
-  // Call back into the alias analysis with the other form of getModRefBehavior
-  // to see if it can give a better response.
-  if (const Function *F = CS.getCalledFunction())
-    Min = getModRefBehavior(F);
+  for (const auto &AA : AAs) {
+    Result = FunctionModRefBehavior(Result & AA->getModRefBehavior(F));
 
-  // If this is the end of the chain, don't forward.
-  if (!AA) return Min;
-
-  // Otherwise, fall back to the next AA in the chain. But we can merge
-  // in any result we've managed to compute.
-  return FunctionModRefBehavior(AA->getModRefBehavior(CS) & Min);
+    // Early-exit the moment we reach the bottom of the lattice.
+    if (Result == FMRB_DoesNotAccessMemory)
+      return Result;
   }
 
-FunctionModRefBehavior AliasAnalysis::getModRefBehavior(const Function *F) {
-  assert(AA && "AA didn't call InitializeAliasAnalysis in its run method!");
-  return AA->getModRefBehavior(F);
+  return Result;
 }
 
 //===----------------------------------------------------------------------===//
-// AliasAnalysis non-virtual helper method implementation
+// Helper method implementation
 //===----------------------------------------------------------------------===//
 
-ModRefInfo AliasAnalysis::getModRefInfo(const LoadInst *L,
-                                        const MemoryLocation &Loc) {
+ModRefInfo AAResults::getModRefInfo(const LoadInst *L,
   // Be conservative in the face of volatile/atomic.
   if (!L->isUnordered())
     return MRI_ModRef;
 
   // If the load address doesn't alias the given address, it doesn't read
   // or write the specified memory.
   if (Loc.Ptr && !alias(MemoryLocation::get(L), Loc))
     return MRI_NoModRef;
 
   // Otherwise, a load just reads.
   return MRI_Ref;
 }
 
-ModRefInfo AliasAnalysis::getModRefInfo(const StoreInst *S,
-                                        const MemoryLocation &Loc) {
+ModRefInfo AAResults::getModRefInfo(const StoreInst *S,
   // Be conservative in the face of volatile/atomic.
   if (!S->isUnordered())
     return MRI_ModRef;
 
   if (Loc.Ptr) {
     // If the store address cannot alias the pointer in question, then the
     // specified memory cannot be modified by the store.
     if (!alias(MemoryLocation::get(S), Loc))
       return MRI_NoModRef;
 
     // If the pointer is a pointer to constant memory, then it could not have
     // been modified by this store.
     if (pointsToConstantMemory(Loc))
       return MRI_NoModRef;
   }
 
   // Otherwise, a store just writes.
   return MRI_Mod;
 }
 
-ModRefInfo AliasAnalysis::getModRefInfo(const VAArgInst *V,
-                                        const MemoryLocation &Loc) {
+ModRefInfo AAResults::getModRefInfo(const VAArgInst *V,
 
   if (Loc.Ptr) {
     // If the va_arg address cannot alias the pointer in question, then the
     // specified memory cannot be accessed by the va_arg.
     if (!alias(MemoryLocation::get(V), Loc))
       return MRI_NoModRef;
 
     // If the pointer is a pointer to constant memory, then it could not have
     // been modified by this va_arg.
     if (pointsToConstantMemory(Loc))
       return MRI_NoModRef;
   }
 
   // Otherwise, a va_arg reads and writes.
   return MRI_ModRef;
 }
 
-ModRefInfo AliasAnalysis::getModRefInfo(const AtomicCmpXchgInst *CX,
-                                        const MemoryLocation &Loc) {
+ModRefInfo AAResults::getModRefInfo(const AtomicCmpXchgInst *CX,
   // Acquire/Release cmpxchg has properties that matter for arbitrary addresses.
   if (CX->getSuccessOrdering() > Monotonic)
     return MRI_ModRef;
 
   // If the cmpxchg address does not alias the location, it does not access it.
   if (Loc.Ptr && !alias(MemoryLocation::get(CX), Loc))
     return MRI_NoModRef;
 
   return MRI_ModRef;
 }
 
-ModRefInfo AliasAnalysis::getModRefInfo(const AtomicRMWInst *RMW,
-                                        const MemoryLocation &Loc) {
+ModRefInfo AAResults::getModRefInfo(const AtomicRMWInst *RMW,
   // Acquire/Release atomicrmw has properties that matter for arbitrary addresses.
   if (RMW->getOrdering() > Monotonic)
     return MRI_ModRef;
 
   // If the atomicrmw address does not alias the location, it does not access it.
   if (Loc.Ptr && !alias(MemoryLocation::get(RMW), Loc))
     return MRI_NoModRef;
 
   return MRI_ModRef;
 }
 
 /// \brief Return information about whether a particular call site modifies
 /// or reads the specified memory location \p MemLoc before instruction \p I
 /// in a BasicBlock. A ordered basic block \p OBB can be used to speed up
 /// instruction-ordering queries inside the BasicBlock containing \p I.
 /// FIXME: this is really just shoring-up a deficiency in alias analysis.
 /// BasicAA isn't willing to spend linear time determining whether an alloca
 /// was captured before or after this particular call, while we are. However,
 /// with a smarter AA in place, this test is just wasting compile time.
-ModRefInfo AliasAnalysis::callCapturesBefore(const Instruction *I,
-                                             const MemoryLocation &MemLoc,
-                                             DominatorTree *DT,
-                                             OrderedBasicBlock *OBB) {
+ModRefInfo AAResults::callCapturesBefore(const Instruction *I,
   if (!DT)
     return MRI_ModRef;
 
-  const Value *Object = GetUnderlyingObject(MemLoc.Ptr, *DL);
+  const Value *Object =
+      GetUnderlyingObject(MemLoc.Ptr, I->getModule()->getDataLayout());
   if (!isIdentifiedObject(Object) || isa<GlobalValue>(Object) ||
       isa<Constant>(Object))
     return MRI_ModRef;
 
   ImmutableCallSite CS(I);
   if (!CS.getInstruction() || CS.getInstruction() == Object)
     return MRI_ModRef;
 
if (CS.onlyReadsMemory(ArgNo)) {
       R = MRI_Ref;
       continue;
     }
     return MRI_ModRef;
   }
   return R;
 }
 
-// AliasAnalysis destructor: DO NOT move this to the header file for
-// AliasAnalysis or else clients of the AliasAnalysis class may not depend on
-// the AliasAnalysis.o file in the current .a file, causing alias analysis
-// support to not be included in the tool correctly!
-//
-AliasAnalysis::~AliasAnalysis() {}
-
-/// InitializeAliasAnalysis - Subclasses must call this method to initialize the
-/// AliasAnalysis interface before any other methods are called.
-///
-void AliasAnalysis::InitializeAliasAnalysis(Pass *P, const DataLayout *NewDL) {
-  DL = NewDL;
-  auto *TLIP = P->getAnalysisIfAvailable<TargetLibraryInfoWrapperPass>();
-  TLI = TLIP ? &TLIP->getTLI() : nullptr;
-  AA = &P->getAnalysis<AliasAnalysis>();
-}
-
-// getAnalysisUsage - All alias analysis implementations should invoke this
-// directly (using AliasAnalysis::getAnalysisUsage(AU)).
-void AliasAnalysis::getAnalysisUsage(AnalysisUsage &AU) const {
-  AU.addRequired<AliasAnalysis>();         // All AA's chain
-}
-
 /// canBasicBlockModify - Return true if it is possible for execution of the
 /// specified basic block to modify the location Loc.
 ///
-bool AliasAnalysis::canBasicBlockModify(const BasicBlock &BB,
-                                        const MemoryLocation &Loc) {
+bool AAResults::canBasicBlockModify(const BasicBlock &BB,
   return canInstructionRangeModRef(BB.front(), BB.back(), Loc, MRI_Mod);
 }
 
 /// canInstructionRangeModRef - Return true if it is possible for the
 /// execution of the specified instructions to mod\ref (according to the
 /// mode) the location Loc. The instructions to consider are all
 /// of the instructions in the range of [I1,I2] INCLUSIVE.
 /// I1 and I2 must be in the same basic block.
-bool AliasAnalysis::canInstructionRangeModRef(const Instruction &I1,
-                                              const Instruction &I2,
-                                              const MemoryLocation &Loc,
-                                              const ModRefInfo Mode) {
+bool AAResults::canInstructionRangeModRef(const Instruction &I1,
   assert(I1.getParent() == I2.getParent() &&
          "Instructions not in same basic block!");
   BasicBlock::const_iterator I = &I1;
   BasicBlock::const_iterator E = &I2;
   ++E;  // Convert from inclusive to exclusive range.
 
   for (; I != E; ++I) // Check every instruction in range
     if (getModRefInfo(I, Loc) & Mode)
       return true;
   return false;
 }
 
+// Provide a definition for the root virtual destructor.
+AAResults::Concept::~Concept() {}
+
+AAResultsWrapperPass::AAResultsWrapperPass() : FunctionPass(ID) {
+  initializeAAResultsWrapperPassPass(*PassRegistry::getPassRegistry());
+}
+
+char AAResultsWrapperPass::ID = 0;
+
+INITIALIZE_PASS_BEGIN(AAResultsWrapperPass, "aa",
+                      "Function Alias Analysis Results", false, true)
+INITIALIZE_PASS_DEPENDENCY(BasicAAWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(CFLAAWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(GlobalsAAWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(ObjCARCAAWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(SCEVAAWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(ScopedNoAliasAAWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(TypeBasedAAWrapperPass)
+INITIALIZE_PASS_END(AAResultsWrapperPass, "aa",
+                    "Function Alias Analysis Results", false, true)
+
+FunctionPass *llvm::createAAResultsWrapperPass() {
+  return new AAResultsWrapperPass();
+}
+
+/// Run the wrapper pass to rebuild an aggregation over known AA passes.
+///
+/// This is the legacy pass manager's interface to the new-style AA results
+/// aggregation object. Because this is somewhat shoe-horned into the legacy
+/// pass manager, we hard code all the specific alias analyses available into
+/// it. While the particular set enabled is configured via commandline flags,
+/// adding a new alias analysis to LLVM will require adding support for it to
+/// this list.
+bool AAResultsWrapperPass::runOnFunction(Function &F) {
+  // NB! This *must* be reset before adding new AA results to the new
+  // AAResults object because in the legacy pass manager, each instance
+  // of these will refer to the *same* immutable analyses, registering and
+  // unregistering themselves with them. We need to carefully tear down the
+  // previous object first, in this case replacing it with an empty one, before
+  // registering new results.
+  AAR.reset(new AAResults());
+
+  // BasicAA is always available for function analyses. Also, we add it first
+  // so that it can trump TBAA results when it proves MustAlias.
+  // FIXME: TBAA should have an explicit mode to support this and then we
+  // should reconsider the ordering here.
+  if (!DisableBasicAA)
+    AAR->addAAResult(getAnalysis<BasicAAWrapperPass>().getResult());
+
+  // Populate the results with the currently available AAs.
+  if (auto *WrapperPass = getAnalysisIfAvailable<ScopedNoAliasAAWrapperPass>())
+    AAR->addAAResult(WrapperPass->getResult());
+  if (auto *WrapperPass = getAnalysisIfAvailable<TypeBasedAAWrapperPass>())
+    AAR->addAAResult(WrapperPass->getResult());
+  if (auto *WrapperPass =
+          getAnalysisIfAvailable<objcarc::ObjCARCAAWrapperPass>())
+    AAR->addAAResult(WrapperPass->getResult());
+  if (auto *WrapperPass = getAnalysisIfAvailable<GlobalsAAWrapperPass>())
+    AAR->addAAResult(WrapperPass->getResult());
+  if (auto *WrapperPass = getAnalysisIfAvailable<SCEVAAWrapperPass>())
+    AAR->addAAResult(WrapperPass->getResult());
+  if (auto *WrapperPass = getAnalysisIfAvailable<CFLAAWrapperPass>())
+    AAR->addAAResult(WrapperPass->getResult());
+
+  // Analyses don't mutate the IR, so return false.
+  return false;
+}
+
+void AAResultsWrapperPass::getAnalysisUsage(AnalysisUsage &AU) const {
+  AU.setPreservesAll();
+  AU.addRequired<BasicAAWrapperPass>();
+
+  // We also need to mark all the alias analysis passes we will potentially
+  // probe in runOnFunction as used here to ensure the legacy pass manager
+  // preserves them. This hard coding of lists of alias analyses is specific to
+  // the legacy pass manager.
+  AU.addUsedIfAvailable<ScopedNoAliasAAWrapperPass>();
+  AU.addUsedIfAvailable<TypeBasedAAWrapperPass>();
+  AU.addUsedIfAvailable<objcarc::ObjCARCAAWrapperPass>();
+  AU.addUsedIfAvailable<GlobalsAAWrapperPass>();
+  AU.addUsedIfAvailable<SCEVAAWrapperPass>();
+  AU.addUsedIfAvailable<CFLAAWrapperPass>();
+}
+
+AAResults llvm::createLegacyPMAAResults(Pass &P, Function &F,
+                                        BasicAAResult &BAR) {
+  AAResults AAR;
+
+  // Add in our explicitly constructed BasicAA results.
+  if (!DisableBasicAA)
+    AAR.addAAResult(BAR);
+
+  // Populate the results with the other currently available AAs.
+  if (auto *WrapperPass =
+          P.getAnalysisIfAvailable<ScopedNoAliasAAWrapperPass>())
+    AAR.addAAResult(WrapperPass->getResult());
+  if (auto *WrapperPass = P.getAnalysisIfAvailable<TypeBasedAAWrapperPass>())
+    AAR.addAAResult(WrapperPass->getResult());
+  if (auto *WrapperPass =
+          P.getAnalysisIfAvailable<objcarc::ObjCARCAAWrapperPass>())
+    AAR.addAAResult(WrapperPass->getResult());
+  if (auto *WrapperPass = P.getAnalysisIfAvailable<GlobalsAAWrapperPass>())
+    AAR.addAAResult(WrapperPass->getResult());
+  if (auto *WrapperPass = P.getAnalysisIfAvailable<SCEVAAWrapperPass>())
+    AAR.addAAResult(WrapperPass->getResult());
+  if (auto *WrapperPass = P.getAnalysisIfAvailable<CFLAAWrapperPass>())
+    AAR.addAAResult(WrapperPass->getResult());
+
+  return AAR;
+}
+
 /// isNoAliasCall - Return true if this pointer is returned by a noalias
 /// function.
 bool llvm::isNoAliasCall(const Value *V) {
   if (auto CS = ImmutableCallSite(V))
     return CS.paramHasAttr(0, Attribute::NoAlias);
   return false;
 }
 

llvm/trunk/lib/Analysis/AliasAnalysisCounter.cpp

-//===- AliasAnalysisCounter.cpp - Alias Analysis Query Counter ------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements a pass which can be used to count how many alias queries
-// are being made and how the alias analysis implementation being used responds.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Analysis/AliasAnalysisCounter.h"
-#include "llvm/Analysis/AliasAnalysis.h"
-#include "llvm/IR/Module.h"
-#include "llvm/Pass.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/raw_ostream.h"
-using namespace llvm;
-
-static cl::opt<bool> PrintAll("count-aa-print-all-queries", cl::ReallyHidden,
-                              cl::init(true));
-static cl::opt<bool> PrintAllFailures("count-aa-print-all-failed-queries",
-                                      cl::ReallyHidden);
-
-char AliasAnalysisCounter::ID = 0;
-INITIALIZE_AG_PASS(AliasAnalysisCounter, AliasAnalysis, "count-aa",
-                   "Count Alias Analysis Query Responses", false, true, false)
-
-ModulePass *llvm::createAliasAnalysisCounterPass() {
-  return new AliasAnalysisCounter();
-}
-
-AliasAnalysisCounter::AliasAnalysisCounter() : ModulePass(ID) {
-  initializeAliasAnalysisCounterPass(*PassRegistry::getPassRegistry());
-  No = May = Partial = Must = 0;
-  NoMR = JustRef = JustMod = MR = 0;
-}
-
-static void printLine(const char *Desc, unsigned Val, unsigned Sum) {
-  errs() << "  " << Val << " " << Desc << " responses (" << Val * 100 / Sum
-         << "%)\n";
-}
-
-AliasAnalysisCounter::~AliasAnalysisCounter() {
-  unsigned AASum = No + May + Partial + Must;
-  unsigned MRSum = NoMR + JustRef + JustMod + MR;
-  if (AASum + MRSum) { // Print a report if any counted queries occurred...
-    errs() << "\n===== Alias Analysis Counter Report =====\n"
-           << "  Analysis counted:\n"
-           << "  " << AASum << " Total Alias Queries Performed\n";
-    if (AASum) {
-      printLine("no alias", No, AASum);
-      printLine("may alias", May, AASum);
-      printLine("partial alias", Partial, AASum);
-      printLine("must alias", Must, AASum);
-      errs() << "  Alias Analysis Counter Summary: " << No * 100 / AASum << "%/"
-             << May * 100 / AASum << "%/" << Partial * 100 / AASum << "%/"
-             << Must * 100 / AASum << "%\n\n";
-    }
-
-    errs() << "  " << MRSum << " Total MRI_Mod/MRI_Ref Queries Performed\n";
-    if (MRSum) {
-      printLine("no mod/ref", NoMR, MRSum);
-      printLine("ref", JustRef, MRSum);
-      printLine("mod", JustMod, MRSum);
-      printLine("mod/ref", MR, MRSum);
-      errs() << "  MRI_Mod/MRI_Ref Analysis Counter Summary: "
-             << NoMR * 100 / MRSum << "%/" << JustRef * 100 / MRSum << "%/"
-             << JustMod * 100 / MRSum << "%/" << MR * 100 / MRSum << "%\n\n";
-    }
-  }
-}
-
-bool AliasAnalysisCounter::runOnModule(Module &M) {
-  this->M = &M;
-  InitializeAliasAnalysis(this, &M.getDataLayout());
-  return false;
-}
-
-void AliasAnalysisCounter::getAnalysisUsage(AnalysisUsage &AU) const {
-  AliasAnalysis::getAnalysisUsage(AU);
-  AU.addRequired<AliasAnalysis>();
-  AU.setPreservesAll();
-}
-
-void *AliasAnalysisCounter::getAdjustedAnalysisPointer(AnalysisID PI) {
-  if (PI == &AliasAnalysis::ID)
-    return (AliasAnalysis *)this;
-  return this;
-}
-
-AliasResult AliasAnalysisCounter::alias(const MemoryLocation &LocA,
-                                        const MemoryLocation &LocB) {
-  AliasResult R = getAnalysis<AliasAnalysis>().alias(LocA, LocB);
-
-  const char *AliasString = nullptr;
-  switch (R) {
-  case NoAlias:
-    No++;
-    AliasString = "No alias";
-    break;
-  case MayAlias:
-    May++;
-    AliasString = "May alias";
-    break;
-  case PartialAlias:
-    Partial++;
-    AliasString = "Partial alias";
-    break;
-  case MustAlias:
-    Must++;
-    AliasString = "Must alias";
-    break;
-  }
-
-  if (PrintAll || (PrintAllFailures && R == MayAlias)) {
-    errs() << AliasString << ":\t";
-    errs() << "[" << LocA.Size << "B] ";
-    LocA.Ptr->printAsOperand(errs(), true, M);
-    errs() << ", ";
-    errs() << "[" << LocB.Size << "B] ";
-    LocB.Ptr->printAsOperand(errs(), true, M);
-    errs() << "\n";
-  }
-
-  return R;
-}
-
-ModRefInfo AliasAnalysisCounter::getModRefInfo(ImmutableCallSite CS,
-                                               const MemoryLocation &Loc) {
-  ModRefInfo R = getAnalysis<AliasAnalysis>().getModRefInfo(CS, Loc);
-
-  const char *MRString = nullptr;
-  switch (R) {
-  case MRI_NoModRef:
-    NoMR++;
-    MRString = "MRI_NoModRef";
-    break;
-  case MRI_Ref:
-    JustRef++;
-    MRString = "JustRef";
-    break;
-  case MRI_Mod:
-    JustMod++;
-    MRString = "JustMod";
-    break;
-  case MRI_ModRef:
-    MR++;
-    MRString = "MRI_ModRef";
-    break;
-  }
-
-  if (PrintAll || (PrintAllFailures && R == MRI_ModRef)) {
-    errs() << MRString << ":  Ptr: ";
-    errs() << "[" << Loc.Size << "B] ";
-    Loc.Ptr->printAsOperand(errs(), true, M);
-    errs() << "\t<->" << *CS.getInstruction() << '\n';
-  }
-  return R;
-}

llvm/trunk/lib/Analysis/AliasAnalysisEvaluator.cpp

namespace {
 
   public:
     static char ID; // Pass identification, replacement for typeid
     AAEval() : FunctionPass(ID) {
       initializeAAEvalPass(*PassRegistry::getPassRegistry());
     }
 
     void getAnalysisUsage(AnalysisUsage &AU) const override {
-      AU.addRequired<AliasAnalysis>();
+      AU.addRequired<AAResultsWrapperPass>();
       AU.setPreservesAll();
     }
 
     bool doInitialization(Module &M) override {
       NoAliasCount = MayAliasCount = PartialAliasCount = MustAliasCount = 0;
       NoModRefCount = ModCount = RefCount = ModRefCount = 0;
 
       if (PrintAll) {
         PrintNoAlias = PrintMayAlias = true;
         PrintPartialAlias = PrintMustAlias = true;
         PrintNoModRef = PrintMod = PrintRef = PrintModRef = true;
       }
       return false;
     }
 
     bool runOnFunction(Function &F) override;
     bool doFinalization(Module &M) override;
   };
 }
 
 char AAEval::ID = 0;
 INITIALIZE_PASS_BEGIN(AAEval, "aa-eval",
                 "Exhaustive Alias Analysis Precision Evaluator", false, true)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_END(AAEval, "aa-eval",
                 "Exhaustive Alias Analysis Precision Evaluator", false, true)
 
 FunctionPass *llvm::createAAEvalPass() { return new AAEval(); }
 
 static void PrintResults(const char *Msg, bool P, const Value *V1,
                          const Value *V2, const Module *M) {
   if (P) {

 
 static inline bool isInterestingPointer(Value *V) {
   return V->getType()->isPointerTy()
       && !isa<ConstantPointerNull>(V);
 }
 
 bool AAEval::runOnFunction(Function &F) {
   const DataLayout &DL = F.getParent()->getDataLayout();
-  AliasAnalysis &AA = getAnalysis<AliasAnalysis>();
+  AliasAnalysis &AA = getAnalysis<AAResultsWrapperPass>().getAAResults();
 
   SetVector<Value *> Pointers;
   SetVector<CallSite> CallSites;
   SetVector<Value *> Loads;
   SetVector<Value *> Stores;
 
   for (Function::arg_iterator I = F.arg_begin(), E = F.arg_end(); I != E; ++I)
     if (I->getType()->isPointerTy())    // Add all pointer arguments.

llvm/trunk/lib/Analysis/AliasSetTracker.cpp

namespace {
   public:
     static char ID; // Pass identification, replacement for typeid
     AliasSetPrinter() : FunctionPass(ID) {
       initializeAliasSetPrinterPass(*PassRegistry::getPassRegistry());
     }
 
     void getAnalysisUsage(AnalysisUsage &AU) const override {
       AU.setPreservesAll();
-      AU.addRequired<AliasAnalysis>();
+      AU.addRequired<AAResultsWrapperPass>();
     }
 
     bool runOnFunction(Function &F) override {
-      Tracker = new AliasSetTracker(getAnalysis<AliasAnalysis>());
+      auto &AAWP = getAnalysis<AAResultsWrapperPass>();
+      Tracker = new AliasSetTracker(AAWP.getAAResults());
 
       for (inst_iterator I = inst_begin(F), E = inst_end(F); I != E; ++I)
         Tracker->add(&*I);
       Tracker->print(errs());
       delete Tracker;
       return false;
     }
   };
 }
 
 char AliasSetPrinter::ID = 0;
 INITIALIZE_PASS_BEGIN(AliasSetPrinter, "print-alias-sets",
                 "Alias Set Printer", false, true)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_END(AliasSetPrinter, "print-alias-sets",
                 "Alias Set Printer", false, true)

llvm/trunk/lib/Analysis/Analysis.cpp

 #include "llvm/PassRegistry.h"
 #include "llvm/Support/raw_ostream.h"
 #include <cstring>
 
 using namespace llvm;
 
 /// initializeAnalysis - Initialize all passes linked into the Analysis library.
 void llvm::initializeAnalysis(PassRegistry &Registry) {
-  initializeAliasAnalysisAnalysisGroup(Registry);
-  initializeAliasAnalysisCounterPass(Registry);
   initializeAAEvalPass(Registry);
   initializeAliasSetPrinterPass(Registry);
-  initializeNoAAPass(Registry);
-  initializeBasicAliasAnalysisPass(Registry);
+  initializeBasicAAWrapperPassPass(Registry);
   initializeBlockFrequencyInfoWrapperPassPass(Registry);
   initializeBranchProbabilityInfoWrapperPassPass(Registry);
   initializeCallGraphWrapperPassPass(Registry);
   initializeCallGraphPrinterPass(Registry);
   initializeCallGraphViewerPass(Registry);
   initializeCostModelAnalysisPass(Registry);
   initializeCFGViewerPass(Registry);
   initializeCFGPrinterPass(Registry);
   initializeCFGOnlyViewerPass(Registry);
   initializeCFGOnlyPrinterPass(Registry);
-  initializeCFLAliasAnalysisPass(Registry);
+  initializeCFLAAWrapperPassPass(Registry);
   initializeDependenceAnalysisPass(Registry);
   initializeDelinearizationPass(Registry);
   initializeDemandedBitsPass(Registry);
   initializeDivergenceAnalysisPass(Registry);
   initializeDominanceFrontierPass(Registry);
   initializeDomViewerPass(Registry);
   initializeDomPrinterPass(Registry);
   initializeDomOnlyViewerPass(Registry);
   initializePostDomViewerPass(Registry);
   initializeDomOnlyPrinterPass(Registry);
   initializePostDomPrinterPass(Registry);
   initializePostDomOnlyViewerPass(Registry);
   initializePostDomOnlyPrinterPass(Registry);
-  initializeGlobalsModRefPass(Registry);
+  initializeAAResultsWrapperPassPass(Registry);
+  initializeGlobalsAAWrapperPassPass(Registry);
   initializeIVUsersPass(Registry);
   initializeInstCountPass(Registry);
   initializeIntervalPartitionPass(Registry);
   initializeLazyValueInfoPass(Registry);
   initializeLintPass(Registry);
   initializeLoopInfoWrapperPassPass(Registry);
   initializeMemDepPrinterPass(Registry);
   initializeMemDerefPrinterPass(Registry);
   initializeMemoryDependenceAnalysisPass(Registry);
   initializeModuleDebugInfoPrinterPass(Registry);
-  initializeObjCARCAliasAnalysisPass(Registry);
+  initializeObjCARCAAWrapperPassPass(Registry);
   initializePostDominatorTreePass(Registry);
   initializeRegionInfoPassPass(Registry);
   initializeRegionViewerPass(Registry);
   initializeRegionPrinterPass(Registry);
   initializeRegionOnlyViewerPass(Registry);
   initializeRegionOnlyPrinterPass(Registry);
+  initializeSCEVAAWrapperPassPass(Registry);
   initializeScalarEvolutionWrapperPassPass(Registry);
-  initializeScalarEvolutionAliasAnalysisPass(Registry);
   initializeTargetTransformInfoWrapperPassPass(Registry);
-  initializeTypeBasedAliasAnalysisPass(Registry);
-  initializeScopedNoAliasAAPass(Registry);
+  initializeTypeBasedAAWrapperPassPass(Registry);
+  initializeScopedNoAliasAAWrapperPassPass(Registry);
 }
 
 void LLVMInitializeAnalysis(LLVMPassRegistryRef R) {
   initializeAnalysis(*unwrap(R));
 }
 
 void LLVMInitializeIPA(LLVMPassRegistryRef R) {
   initializeAnalysis(*unwrap(R));

llvm/trunk/lib/Analysis/BasicAliasAnalysis.cpp

 #include "llvm/ADT/Statistic.h"
 #include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/Analysis/CFG.h"
 #include "llvm/Analysis/CaptureTracking.h"
 #include "llvm/Analysis/InstructionSimplify.h"
 #include "llvm/Analysis/LoopInfo.h"
 #include "llvm/Analysis/MemoryBuiltins.h"
 #include "llvm/Analysis/ValueTracking.h"
+#include "llvm/Analysis/AssumptionCache.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/Dominators.h"
 #include "llvm/IR/GlobalAlias.h"
 #include "llvm/IR/GlobalVariable.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/IntrinsicInst.h"

 ///
 /// Returns the scale and offset values as APInts and return V as a Value*, and
 /// return whether we looked through any sign or zero extends.  The incoming
 /// Value is known to have IntegerType and it may already be sign or zero
 /// extended.
 ///
 /// Note that this looks through extends, so the high bits may not be
 /// represented in the result.
-/*static*/ const Value *BasicAliasAnalysis::GetLinearExpression(
+/*static*/ const Value *BasicAAResult::GetLinearExpression(
     const Value *V, APInt &Scale, APInt &Offset, unsigned &ZExtBits,
     unsigned &SExtBits, const DataLayout &DL, unsigned Depth,
     AssumptionCache *AC, DominatorTree *DT, bool &NSW, bool &NUW) {
   assert(V->getType()->isIntegerTy() && "Not an integer value");
 
   // Limit our recursion depth.
   if (Depth == 6) {
     Scale = 1;

 /// specified amount, but which may have other unrepresented high bits. As
 /// such, the gep cannot necessarily be reconstructed from its decomposed form.
 ///
 /// When DataLayout is around, this function is capable of analyzing everything
 /// that GetUnderlyingObject can look through. To be able to do that
 /// GetUnderlyingObject and DecomposeGEPExpression must use the same search
 /// depth (MaxLookupSearchDepth). When DataLayout not is around, it just looks
 /// through pointer casts.
-/*static*/ const Value *BasicAliasAnalysis::DecomposeGEPExpression(
+/*static*/ const Value *BasicAAResult::DecomposeGEPExpression(
     const Value *V, int64_t &BaseOffs,
     SmallVectorImpl<VariableGEPIndex> &VarIndices, bool &MaxLookupReached,
     const DataLayout &DL, AssumptionCache *AC, DominatorTree *DT) {
   // Limit recursion depth to limit compile time in crazy cases.
   unsigned MaxLookup = MaxLookupSearchDepth;
   MaxLookupReached = false;
   SearchTimes++;
 
/*static*/ const Value *BasicAAResult::DecomposeGEPExpression(
   } while (--MaxLookup);
 
   // If the chain of expressions is too deep, just return early.
   MaxLookupReached = true;
   SearchLimitReached++;
   return V;
 }
 
-//===----------------------------------------------------------------------===//
-// BasicAliasAnalysis Pass
-//===----------------------------------------------------------------------===//
-
-// Register the pass...
-char BasicAliasAnalysis::ID = 0;
-INITIALIZE_AG_PASS_BEGIN(BasicAliasAnalysis, AliasAnalysis, "basicaa",
-                         "Basic Alias Analysis (stateless AA impl)", false,
-                         true, false)
-INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
-INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
-INITIALIZE_AG_PASS_END(BasicAliasAnalysis, AliasAnalysis, "basicaa",
-                       "Basic Alias Analysis (stateless AA impl)", false, true,
-                       false)
-
-ImmutablePass *llvm::createBasicAliasAnalysisPass() {
-  return new BasicAliasAnalysis();
-}
-
 /// Returns whether the given pointer value points to memory that is local to
 /// the function, with global constants being considered local to all
 /// functions.
-bool BasicAliasAnalysis::pointsToConstantMemory(const MemoryLocation &Loc,
-                                                bool OrLocal) {
+bool BasicAAResult::pointsToConstantMemory(const MemoryLocation &Loc,
   assert(Visited.empty() && "Visited must be cleared after use!");
 
   unsigned MaxLookup = 8;
   SmallVector<const Value *, 16> Worklist;
   Worklist.push_back(Loc.Ptr);
   do {
-    const Value *V = GetUnderlyingObject(Worklist.pop_back_val(), *DL);
+    const Value *V = GetUnderlyingObject(Worklist.pop_back_val(), DL);
     if (!Visited.insert(V).second) {
       Visited.clear();
-      return AliasAnalysis::pointsToConstantMemory(Loc, OrLocal);
+      return AAResultBase::pointsToConstantMemory(Loc, OrLocal);
     }
 
     // An alloca instruction defines local memory.
     if (OrLocal && isa<AllocaInst>(V))
       continue;
 
     // A global constant counts as local memory for our purposes.
     if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) {
       // Note: this doesn't require GV to be "ODR" because it isn't legal for a
       // global to be marked constant in some modules and non-constant in
       // others.  GV may even be a declaration, not a definition.
       if (!GV->isConstant()) {
         Visited.clear();
-        return AliasAnalysis::pointsToConstantMemory(Loc, OrLocal);
+        return AAResultBase::pointsToConstantMemory(Loc, OrLocal);
       }
       continue;
     }
 
     // If both select values point to local memory, then so does the select.
     if (const SelectInst *SI = dyn_cast<SelectInst>(V)) {
       Worklist.push_back(SI->getTrueValue());
       Worklist.push_back(SI->getFalseValue());
       continue;
     }
 
     // If all values incoming to a phi node point to local memory, then so does
     // the phi.
     if (const PHINode *PN = dyn_cast<PHINode>(V)) {
       // Don't bother inspecting phi nodes with many operands.
       if (PN->getNumIncomingValues() > MaxLookup) {
         Visited.clear();
-        return AliasAnalysis::pointsToConstantMemory(Loc, OrLocal);
+        return AAResultBase::pointsToConstantMemory(Loc, OrLocal);
       }
       for (Value *IncValue : PN->incoming_values())
         Worklist.push_back(IncValue);
       continue;
     }
 
     // Otherwise be conservative.
     Visited.clear();
-    return AliasAnalysis::pointsToConstantMemory(Loc, OrLocal);
+    return AAResultBase::pointsToConstantMemory(Loc, OrLocal);
 
   } while (!Worklist.empty() && --MaxLookup);
 
   Visited.clear();
   return Worklist.empty();
 }
 
 // FIXME: This code is duplicated with MemoryLocation and should be hoisted to
if (!MemsetType->isVarArg() && MemsetType->getNumParams() == 3 &&
         isa<IntegerType>(MemsetType->getParamType(2)))
       return true;
   }
 
   return false;
 }
 
 /// Returns the behavior when calling the given call site.
-FunctionModRefBehavior
-BasicAliasAnalysis::getModRefBehavior(ImmutableCallSite CS) {
+FunctionModRefBehavior BasicAAResult::getModRefBehavior(ImmutableCallSite CS) {
   if (CS.doesNotAccessMemory())
     // Can't do better than this.
     return FMRB_DoesNotAccessMemory;
 
   FunctionModRefBehavior Min = FMRB_UnknownModRefBehavior;
 
   // If the callsite knows it only reads memory, don't return worse
   // than that.
   if (CS.onlyReadsMemory())
     Min = FMRB_OnlyReadsMemory;
 
   if (CS.onlyAccessesArgMemory())
     Min = FunctionModRefBehavior(Min & FMRB_OnlyAccessesArgumentPointees);
 
-  // The AliasAnalysis base class has some smarts, lets use them.
-  return FunctionModRefBehavior(AliasAnalysis::getModRefBehavior(CS) & Min);
+  // The AAResultBase base class has some smarts, lets use them.
+  return FunctionModRefBehavior(AAResultBase::getModRefBehavior(CS) & Min);
 }
 
 /// Returns the behavior when calling the given function. For use when the call
 /// site is not known.
-FunctionModRefBehavior
-BasicAliasAnalysis::getModRefBehavior(const Function *F) {
+FunctionModRefBehavior BasicAAResult::getModRefBehavior(const Function *F) {
   // If the function declares it doesn't access memory, we can't do better.
   if (F->doesNotAccessMemory())
     return FMRB_DoesNotAccessMemory;
 
   FunctionModRefBehavior Min = FMRB_UnknownModRefBehavior;
 
   // If the function declares it only reads memory, go with that.
   if (F->onlyReadsMemory())
     Min = FMRB_OnlyReadsMemory;
 
   if (F->onlyAccessesArgMemory())
     Min = FunctionModRefBehavior(Min & FMRB_OnlyAccessesArgumentPointees);
 
-  const TargetLibraryInfo &TLI =
-      getAnalysis<TargetLibraryInfoWrapperPass>().getTLI();
   if (isMemsetPattern16(F, TLI))
     Min = FMRB_OnlyAccessesArgumentPointees;
 
   // Otherwise be conservative.
-  return FunctionModRefBehavior(AliasAnalysis::getModRefBehavior(F) & Min);
+  return FunctionModRefBehavior(AAResultBase::getModRefBehavior(F) & Min);
 }
 
-ModRefInfo BasicAliasAnalysis::getArgModRefInfo(ImmutableCallSite CS,
-                                                unsigned ArgIdx) {
+ModRefInfo BasicAAResult::getArgModRefInfo(ImmutableCallSite CS,
   if (const IntrinsicInst *II = dyn_cast<IntrinsicInst>(CS.getInstruction()))
     switch (II->getIntrinsicID()) {
     default:
       break;
     case Intrinsic::memset:
     case Intrinsic::memcpy:
     case Intrinsic::memmove:
       assert((ArgIdx == 0 || ArgIdx == 1) &&
              "Invalid argument index for memory intrinsic");
       return ArgIdx ? MRI_Ref : MRI_Mod;
     }
 
   // We can bound the aliasing properties of memset_pattern16 just as we can
   // for memcpy/memset.  This is particularly important because the
   // LoopIdiomRecognizer likes to turn loops into calls to memset_pattern16
   // whenever possible.
   if (CS.getCalledFunction() &&
-      isMemsetPattern16(CS.getCalledFunction(), *TLI)) {
+      isMemsetPattern16(CS.getCalledFunction(), TLI)) {
     assert((ArgIdx == 0 || ArgIdx == 1) &&
            "Invalid argument index for memset_pattern16");
     return ArgIdx ? MRI_Ref : MRI_Mod;
   }
   // FIXME: Handle memset_pattern4 and memset_pattern8 also.
 
-  return AliasAnalysis::getArgModRefInfo(CS, ArgIdx);
+  return AAResultBase::getArgModRefInfo(CS, ArgIdx);
 }
 
 static bool isAssumeIntrinsic(ImmutableCallSite CS) {
   const IntrinsicInst *II = dyn_cast<IntrinsicInst>(CS.getInstruction());
   if (II && II->getIntrinsicID() == Intrinsic::assume)
     return true;
 
   return false;
 }
 
-bool BasicAliasAnalysis::doInitialization(Module &M) {
-  InitializeAliasAnalysis(this, &M.getDataLayout());
-  return true;
-}
-
 /// Checks to see if the specified callsite can clobber the specified memory
 /// object.
 ///
 /// Since we only look at local properties of this function, we really can't
 /// say much about this query.  We do, however, use simple "address taken"
 /// analysis on local objects.
-ModRefInfo BasicAliasAnalysis::getModRefInfo(ImmutableCallSite CS,
-                                             const MemoryLocation &Loc) {
+ModRefInfo BasicAAResult::getModRefInfo(ImmutableCallSite CS,
   assert(notDifferentParent(CS.getInstruction(), Loc.Ptr) &&
          "AliasAnalysis query involving multiple functions!");
 
-  const Value *Object = GetUnderlyingObject(Loc.Ptr, *DL);
+  const Value *Object = GetUnderlyingObject(Loc.Ptr, DL);
 
   // If this is a tail call and Loc.Ptr points to a stack location, we know that
   // the tail call cannot access or modify the local stack.
   // We cannot exclude byval arguments here; these belong to the caller of
   // the current function not to the current function, and a tail callee
   // may reference them.
   if (isa<AllocaInst>(Object))
     if (const CallInst *CI = dyn_cast<CallInst>(CS.getInstruction()))
for (ImmutableCallSite::arg_iterator CI = CS.arg_begin(), CE = CS.arg_end();
       if (!(*CI)->getType()->isPointerTy() ||
           (!CS.doesNotCapture(ArgNo) && !CS.isByValArgument(ArgNo)))
         continue;
 
       // If this is a no-capture pointer argument, see if we can tell that it
       // is impossible to alias the pointer we're checking.  If not, we have to
       // assume that the call could touch the pointer, even though it doesn't
       // escape.
-      if (!isNoAlias(MemoryLocation(*CI), MemoryLocation(Object))) {
+      AliasResult AR =
+          getBestAAResults().alias(MemoryLocation(*CI), MemoryLocation(Object));
+      if (AR) {
         PassedAsArg = true;
         break;
       }
     }
 
     if (!PassedAsArg)
       return MRI_NoModRef;
   }
 
   // While the assume intrinsic is marked as arbitrarily writing so that
   // proper control dependencies will be maintained, it never aliases any
   // particular memory location.
   if (isAssumeIntrinsic(CS))
     return MRI_NoModRef;
 
-  // The AliasAnalysis base class has some smarts, lets use them.
-  return AliasAnalysis::getModRefInfo(CS, Loc);
+  // The AAResultBase base class has some smarts, lets use them.
+  return AAResultBase::getModRefInfo(CS, Loc);
 }
 
-ModRefInfo BasicAliasAnalysis::getModRefInfo(ImmutableCallSite CS1,
-                                             ImmutableCallSite CS2) {
+ModRefInfo BasicAAResult::getModRefInfo(ImmutableCallSite CS1,
   // While the assume intrinsic is marked as arbitrarily writing so that
   // proper control dependencies will be maintained, it never aliases any
   // particular memory location.
   if (isAssumeIntrinsic(CS1) || isAssumeIntrinsic(CS2))
     return MRI_NoModRef;
 
-  // The AliasAnalysis base class has some smarts, lets use them.
-  return AliasAnalysis::getModRefInfo(CS1, CS2);
+  // The AAResultBase base class has some smarts, lets use them.
+  return AAResultBase::getModRefInfo(CS1, CS2);
 }
 
 /// Provide ad-hoc rules to disambiguate accesses through two GEP operators,
 /// both having the exact same pointer operand.
 static AliasResult aliasSameBasePointerGEPs(const GEPOperator *GEP1,
                                             uint64_t V1Size,
                                             const GEPOperator *GEP2,
                                             uint64_t V2Size,

 }
 
 /// Provides a bunch of ad-hoc rules to disambiguate a GEP instruction against
 /// another pointer.
 ///
 /// We know that V1 is a GEP, but we don't know anything about V2.
 /// UnderlyingV1 is GetUnderlyingObject(GEP1, DL), UnderlyingV2 is the same for
 /// V2.
-AliasResult BasicAliasAnalysis::aliasGEP(
-    const GEPOperator *GEP1, uint64_t V1Size, const AAMDNodes &V1AAInfo,
-    const Value *V2, uint64_t V2Size, const AAMDNodes &V2AAInfo,
-    const Value *UnderlyingV1, const Value *UnderlyingV2) {
+AliasResult BasicAAResult::aliasGEP(const GEPOperator *GEP1, uint64_t V1Size,
+                                    const AAMDNodes &V1AAInfo, const Value *V2,
+                                    uint64_t V2Size, const AAMDNodes &V2AAInfo,
+                                    const Value *UnderlyingV1,
+                                    const Value *UnderlyingV2) {
   int64_t GEP1BaseOffset;
   bool GEP1MaxLookupReached;
   SmallVector<VariableGEPIndex, 4> GEP1VariableIndices;
 
-  // We have to get two AssumptionCaches here because GEP1 and V2 may be from
-  // different functions.
-  // FIXME: This really doesn't make any sense. We get a dominator tree below
-  // that can only refer to a single function. But this function (aliasGEP) is
-  // a method on an immutable pass that can be called when there *isn't*
-  // a single function. The old pass management layer makes this "work", but
-  // this isn't really a clean solution.
-  AssumptionCacheTracker &ACT = getAnalysis<AssumptionCacheTracker>();
-  AssumptionCache *AC1 = nullptr, *AC2 = nullptr;
-  if (auto *GEP1I = dyn_cast<Instruction>(GEP1))
-    AC1 = &ACT.getAssumptionCache(
-        const_cast<Function &>(*GEP1I->getParent()->getParent()));
-  if (auto *I2 = dyn_cast<Instruction>(V2))
-    AC2 = &ACT.getAssumptionCache(
-        const_cast<Function &>(*I2->getParent()->getParent()));
-
-  DominatorTreeWrapperPass *DTWP =
-      getAnalysisIfAvailable<DominatorTreeWrapperPass>();
-  DominatorTree *DT = DTWP ? &DTWP->getDomTree() : nullptr;
-
   // If we have two gep instructions with must-alias or not-alias'ing base
   // pointers, figure out if the indexes to the GEP tell us anything about the
   // derived pointer.
   if (const GEPOperator *GEP2 = dyn_cast<GEPOperator>(V2)) {
     // Do the base pointers alias?
     AliasResult BaseAlias =
         aliasCheck(UnderlyingV1, MemoryLocation::UnknownSize, AAMDNodes(),
                    UnderlyingV2, MemoryLocation::UnknownSize, AAMDNodes());
 
     // Check for geps of non-aliasing underlying pointers where the offsets are
     // identical.
     if ((BaseAlias == MayAlias) && V1Size == V2Size) {
       // Do the base pointers alias assuming type and size.
       AliasResult PreciseBaseAlias = aliasCheck(UnderlyingV1, V1Size, V1AAInfo,
                                                 UnderlyingV2, V2Size, V2AAInfo);
       if (PreciseBaseAlias == NoAlias) {
         // See if the computed offset from the common pointer tells us about the
         // relation of the resulting pointer.
         int64_t GEP2BaseOffset;
         bool GEP2MaxLookupReached;
         SmallVector<VariableGEPIndex, 4> GEP2VariableIndices;
         const Value *GEP2BasePtr =
             DecomposeGEPExpression(GEP2, GEP2BaseOffset, GEP2VariableIndices,
-                                   GEP2MaxLookupReached, *DL, AC2, DT);
+                                   GEP2MaxLookupReached, DL, &AC, DT);
         const Value *GEP1BasePtr =
             DecomposeGEPExpression(GEP1, GEP1BaseOffset, GEP1VariableIndices,
-                                   GEP1MaxLookupReached, *DL, AC1, DT);
+                                   GEP1MaxLookupReached, DL, &AC, DT);
         // DecomposeGEPExpression and GetUnderlyingObject should return the
         // same result except when DecomposeGEPExpression has no DataLayout.
+        // FIXME: They always have a DataLayout so this should become an
+        // assert.
         if (GEP1BasePtr != UnderlyingV1 || GEP2BasePtr != UnderlyingV2) {
-          assert(!DL &&
-                 "DecomposeGEPExpression and GetUnderlyingObject disagree!");
           return MayAlias;
         }
         // If the max search depth is reached the result is undefined
         if (GEP2MaxLookupReached || GEP1MaxLookupReached)
           return MayAlias;
 
         // Same offsets.
         if (GEP1BaseOffset == GEP2BaseOffset &&
             GEP1VariableIndices == GEP2VariableIndices)
           return NoAlias;
         GEP1VariableIndices.clear();
       }
     }
 
     // If we get a No or May, then return it immediately, no amount of analysis
     // will improve this situation.
     if (BaseAlias != MustAlias)
       return BaseAlias;
 
     // Otherwise, we have a MustAlias.  Since the base pointers alias each other
     // exactly, see if the computed offset from the common pointer tells us
     // about the relation of the resulting pointer.
     const Value *GEP1BasePtr =
         DecomposeGEPExpression(GEP1, GEP1BaseOffset, GEP1VariableIndices,
-                               GEP1MaxLookupReached, *DL, AC1, DT);
+                               GEP1MaxLookupReached, DL, &AC, DT);
 
     int64_t GEP2BaseOffset;
     bool GEP2MaxLookupReached;
     SmallVector<VariableGEPIndex, 4> GEP2VariableIndices;
     const Value *GEP2BasePtr =
         DecomposeGEPExpression(GEP2, GEP2BaseOffset, GEP2VariableIndices,
-                               GEP2MaxLookupReached, *DL, AC2, DT);
+                               GEP2MaxLookupReached, DL, &AC, DT);
 
     // DecomposeGEPExpression and GetUnderlyingObject should return the
     // same result except when DecomposeGEPExpression has no DataLayout.
+    // FIXME: They always have a DataLayout so this should become an assert.
     if (GEP1BasePtr != UnderlyingV1 || GEP2BasePtr != UnderlyingV2) {
-      assert(!DL && "DecomposeGEPExpression and GetUnderlyingObject disagree!");
       return MayAlias;
     }
 
     // If we know the two GEPs are based off of the exact same pointer (and not
     // just the same underlying object), see if that tells us anything about
     // the resulting pointers.
-    if (DL && GEP1->getPointerOperand() == GEP2->getPointerOperand()) {
-      AliasResult R = aliasSameBasePointerGEPs(GEP1, V1Size, GEP2, V2Size, *DL);
+    if (GEP1->getPointerOperand() == GEP2->getPointerOperand()) {
+      AliasResult R = aliasSameBasePointerGEPs(GEP1, V1Size, GEP2, V2Size, DL);
       // If we couldn't find anything interesting, don't abandon just yet.
       if (R != MayAlias)
         return R;
     }
 
     // If the max search depth is reached the result is undefined
     if (GEP2MaxLookupReached || GEP1MaxLookupReached)
       return MayAlias;
if (R != MustAlias)
       // If V2 is known not to alias GEP base pointer, then the two values
       // cannot alias per GEP semantics: "A pointer value formed from a
       // getelementptr instruction is associated with the addresses associated
       // with the first operand of the getelementptr".
       return R;
 
     const Value *GEP1BasePtr =
         DecomposeGEPExpression(GEP1, GEP1BaseOffset, GEP1VariableIndices,
-                               GEP1MaxLookupReached, *DL, AC1, DT);
+                               GEP1MaxLookupReached, DL, &AC, DT);
 
     // DecomposeGEPExpression and GetUnderlyingObject should return the
     // same result except when DecomposeGEPExpression has no DataLayout.
+    // FIXME: They always have a DataLayout so this should become an assert.
     if (GEP1BasePtr != UnderlyingV1) {
-      assert(!DL && "DecomposeGEPExpression and GetUnderlyingObject disagree!");
       return MayAlias;
     }
     // If the max search depth is reached the result is undefined
     if (GEP1MaxLookupReached)
       return MayAlias;
   }
 
   // In the two GEP Case, if there is no difference in the offsets of the
for (unsigned i = 0, e = GEP1VariableIndices.size(); i != e; ++i) {
 
       if (AllPositive) {
         // If the Value could change between cycles, then any reasoning about
         // the Value this cycle may not hold in the next cycle. We'll just
         // give up if we can't determine conditions that hold for every cycle:
         const Value *V = GEP1VariableIndices[i].V;
 
         bool SignKnownZero, SignKnownOne;
-        ComputeSignBit(const_cast<Value *>(V), SignKnownZero, SignKnownOne, *DL,
-                       0, AC1, nullptr, DT);
+        ComputeSignBit(const_cast<Value *>(V), SignKnownZero, SignKnownOne, DL,
+                       0, &AC, nullptr, DT);
 
         // Zero-extension widens the variable, and so forces the sign
         // bit to zero.
         bool IsZExt = GEP1VariableIndices[i].ZExtBits > 0 || isa<ZExtInst>(V);
         SignKnownZero |= IsZExt;
         SignKnownOne &= !IsZExt;
 
         // If the variable begins with a zero then we know it's
if (!GEP1VariableIndices.empty()) {
 
     // If we know all the variables are positive, then GEP1 >= GEP1BasePtr.
     // If GEP1BasePtr > V2 (GEP1BaseOffset > 0) then we know the pointers
     // don't alias if V2Size can fit in the gap between V2 and GEP1BasePtr.
     if (AllPositive && GEP1BaseOffset > 0 && V2Size <= (uint64_t)GEP1BaseOffset)
       return NoAlias;
 
     if (constantOffsetHeuristic(GEP1VariableIndices, V1Size, V2Size,
-                                GEP1BaseOffset, DL, AC1, DT))
+                                GEP1BaseOffset, &AC, DT))
       return NoAlias;
   }
 
   // Statically, we can see that the base objects are the same, but the
   // pointers have dynamic offsets which we can't resolve. And none of our
   // little tricks above worked.
   //
   // TODO: Returning PartialAlias instead of MayAlias is a mild hack; the
if ((A == PartialAlias && B == MustAlias) ||
       (B == PartialAlias && A == MustAlias))
     return PartialAlias;
   // Otherwise, we don't know anything.
   return MayAlias;
 }
 
 /// Provides a bunch of ad-hoc rules to disambiguate a Select instruction
 /// against another.
-AliasResult BasicAliasAnalysis::aliasSelect(const SelectInst *SI,
-                                            uint64_t SISize,
-                                            const AAMDNodes &SIAAInfo,
-                                            const Value *V2, uint64_t V2Size,
-                                            const AAMDNodes &V2AAInfo) {
+AliasResult BasicAAResult::aliasSelect(const SelectInst *SI, uint64_t SISize,
   // If the values are Selects with the same condition, we can do a more precise
   // check: just check for aliases between the values on corresponding arms.
   if (const SelectInst *SI2 = dyn_cast<SelectInst>(V2))
     if (SI->getCondition() == SI2->getCondition()) {
       AliasResult Alias = aliasCheck(SI->getTrueValue(), SISize, SIAAInfo,
                                      SI2->getTrueValue(), V2Size, V2AAInfo);
       if (Alias == MayAlias)
         return MayAlias;
AliasResult BasicAAResult::aliasSelect(const SelectInst *SI, uint64_t SISize,
 
   AliasResult ThisAlias =
       aliasCheck(V2, V2Size, V2AAInfo, SI->getFalseValue(), SISize, SIAAInfo);
   return MergeAliasResults(ThisAlias, Alias);
 }
 
 /// Provide a bunch of ad-hoc rules to disambiguate a PHI instruction against
 /// another.
-AliasResult BasicAliasAnalysis::aliasPHI(const PHINode *PN, uint64_t PNSize,
-                                         const AAMDNodes &PNAAInfo,
-                                         const Value *V2, uint64_t V2Size,
-                                         const AAMDNodes &V2AAInfo) {
+AliasResult BasicAAResult::aliasPHI(const PHINode *PN, uint64_t PNSize,
+                                    const AAMDNodes &PNAAInfo, const Value *V2,
+                                    uint64_t V2Size,
   // Track phi nodes we have visited. We use this information when we determine
   // value equivalence.
   VisitedPhiBBs.insert(PN->getParent());
 
   // If the values are PHIs in the same block, we can do a more precise
   // as well as efficient check: just check for aliases between the values
   // on corresponding edges.
   if (const PHINode *PN2 = dyn_cast<PHINode>(V2))
if (Alias == MayAlias)
       break;
   }
 
   return Alias;
 }
 
 /// Provideis a bunch of ad-hoc rules to disambiguate in common cases, such as
 /// array references.
-AliasResult BasicAliasAnalysis::aliasCheck(const Value *V1, uint64_t V1Size,
-                                           AAMDNodes V1AAInfo, const Value *V2,
-                                           uint64_t V2Size,
-                                           AAMDNodes V2AAInfo) {
+AliasResult BasicAAResult::aliasCheck(const Value *V1, uint64_t V1Size,
+                                      uint64_t V2Size, AAMDNodes V2AAInfo) {
   // If either of the memory references is empty, it doesn't matter what the
   // pointer values are.
   if (V1Size == 0 || V2Size == 0)
     return NoAlias;
 
   // Strip off any casts if they exist.
   V1 = V1->stripPointerCasts();
   V2 = V2->stripPointerCasts();
AliasResult BasicAAResult::aliasCheck(const Value *V1, uint64_t V1Size,
   // reach the value.
   if (isValueEqualInPotentialCycles(V1, V2))
     return MustAlias;
 
   if (!V1->getType()->isPointerTy() || !V2->getType()->isPointerTy())
     return NoAlias; // Scalars cannot alias each other
 
   // Figure out what objects these things are pointing to if we can.
-  const Value *O1 = GetUnderlyingObject(V1, *DL, MaxLookupSearchDepth);
-  const Value *O2 = GetUnderlyingObject(V2, *DL, MaxLookupSearchDepth);
+  const Value *O1 = GetUnderlyingObject(V1, DL, MaxLookupSearchDepth);
+  const Value *O2 = GetUnderlyingObject(V2, DL, MaxLookupSearchDepth);
 
   // Null values in the default address space don't point to any object, so they
   // don't alias any other pointer.
   if (const ConstantPointerNull *CPN = dyn_cast<ConstantPointerNull>(O1))
     if (CPN->getType()->getAddressSpace() == 0)
       return NoAlias;
   if (const ConstantPointerNull *CPN = dyn_cast<ConstantPointerNull>(O2))
     if (CPN->getType()->getAddressSpace() == 0)
if (O1 != O2) {
     if (isEscapeSource(O1) && isNonEscapingLocalObject(O2))
       return NoAlias;
     if (isEscapeSource(O2) && isNonEscapingLocalObject(O1))
       return NoAlias;
   }
 
   // If the size of one access is larger than the entire object on the other
   // side, then we know such behavior is undefined and can assume no alias.
-  if (DL)
-    if ((V1Size != MemoryLocation::UnknownSize &&
-         isObjectSmallerThan(O2, V1Size, *DL, *TLI)) ||
-        (V2Size != MemoryLocation::UnknownSize &&
-         isObjectSmallerThan(O1, V2Size, *DL, *TLI)))
-      return NoAlias;
+       isObjectSmallerThan(O2, V1Size, DL, TLI)) ||
+       isObjectSmallerThan(O1, V2Size, DL, TLI)))
 
   // Check the cache before climbing up use-def chains. This also terminates
   // otherwise infinitely recursive queries.
   LocPair Locs(MemoryLocation(V1, V1Size, V1AAInfo),
                MemoryLocation(V2, V2Size, V2AAInfo));
   if (V1 > V2)
     std::swap(Locs.first, Locs.second);
   std::pair<AliasCacheTy::iterator, bool> Pair =
AliasResult Result =
         aliasSelect(S1, V1Size, V1AAInfo, V2, V2Size, V2AAInfo);
     if (Result != MayAlias)
       return AliasCache[Locs] = Result;
   }
 
   // If both pointers are pointing into the same object and one of them
   // accesses is accessing the entire object, then the accesses must
   // overlap in some way.
-  if (DL && O1 == O2)
+  if (O1 == O2)
     if ((V1Size != MemoryLocation::UnknownSize &&
-         isObjectSize(O1, V1Size, *DL, *TLI)) ||
+         isObjectSize(O1, V1Size, DL, TLI)) ||
         (V2Size != MemoryLocation::UnknownSize &&
-         isObjectSize(O2, V2Size, *DL, *TLI)))
+         isObjectSize(O2, V2Size, DL, TLI)))
       return AliasCache[Locs] = PartialAlias;
 
-  AliasResult Result =
-      AliasAnalysis::alias(MemoryLocation(V1, V1Size, V1AAInfo),
-                           MemoryLocation(V2, V2Size, V2AAInfo));
+  // Recurse back into the best AA results we have, potentially with refined
+  // memory locations. We have already ensured that BasicAA has a MayAlias
+  // cache result for these, so any recursion back into BasicAA won't loop.
+  AliasResult Result = getBestAAResults().alias(Locs.first, Locs.second);
   return AliasCache[Locs] = Result;
 }
 
 /// Check whether two Values can be considered equivalent.
 ///
 /// In addition to pointer equivalence of \p V1 and \p V2 this checks whether
 /// they can not be part of a cycle in the value graph by looking at all
 /// visited phi nodes an making sure that the phis cannot reach the value. We
 /// have to do this because we are looking through phi nodes (That is we say
 /// noalias(V, phi(VA, VB)) if noalias(V, VA) and noalias(V, VB).
-bool BasicAliasAnalysis::isValueEqualInPotentialCycles(const Value *V,
-                                                       const Value *V2) {
+bool BasicAAResult::isValueEqualInPotentialCycles(const Value *V,
   if (V != V2)
     return false;
 
   const Instruction *Inst = dyn_cast<Instruction>(V);
   if (!Inst)
     return true;
 
   if (VisitedPhiBBs.empty())
     return true;
 
   if (VisitedPhiBBs.size() > MaxNumPhiBBsValueReachabilityCheck)
     return false;
 
-  // Use dominance or loop info if available.
-  DominatorTreeWrapperPass *DTWP =
-      getAnalysisIfAvailable<DominatorTreeWrapperPass>();
-  DominatorTree *DT = DTWP ? &DTWP->getDomTree() : nullptr;
-  auto *LIWP = getAnalysisIfAvailable<LoopInfoWrapperPass>();
-  LoopInfo *LI = LIWP ? &LIWP->getLoopInfo() : nullptr;
-
   // Make sure that the visited phis cannot reach the Value. This ensures that
   // the Values cannot come from different iterations of a potential cycle the
   // phi nodes could be involved in.
   for (auto *P : VisitedPhiBBs)
     if (isPotentiallyReachable(P->begin(), Inst, DT, LI))
       return false;
 
   return true;
 }
 
 /// Computes the symbolic difference between two de-composed GEPs.
 ///
 /// Dest and Src are the variable indices from two decomposed GetElementPtr
 /// instructions GEP1 and GEP2 which have common base pointers.
-void BasicAliasAnalysis::GetIndexDifference(
+void BasicAAResult::GetIndexDifference(
     SmallVectorImpl<VariableGEPIndex> &Dest,
     const SmallVectorImpl<VariableGEPIndex> &Src) {
   if (Src.empty())
     return;
 
   for (unsigned i = 0, e = Src.size(); i != e; ++i) {
     const Value *V = Src[i].V;
     unsigned ZExtBits = Src[i].ZExtBits, SExtBits = Src[i].SExtBits;
for (unsigned i = 0, e = Src.size(); i != e; ++i) {
     // If we didn't consume this entry, add it to the end of the Dest list.
     if (Scale) {
       VariableGEPIndex Entry = {V, ZExtBits, SExtBits, -Scale};
       Dest.push_back(Entry);
     }
   }
 }
 
-bool BasicAliasAnalysis::constantOffsetHeuristic(
+bool BasicAAResult::constantOffsetHeuristic(
     const SmallVectorImpl<VariableGEPIndex> &VarIndices, uint64_t V1Size,
-    uint64_t V2Size, int64_t BaseOffset, const DataLayout *DL,
-    AssumptionCache *AC, DominatorTree *DT) {
+    uint64_t V2Size, int64_t BaseOffset, AssumptionCache *AC,
+    DominatorTree *DT) {
   if (VarIndices.size() != 2 || V1Size == MemoryLocation::UnknownSize ||
-      V2Size == MemoryLocation::UnknownSize || !DL)
+      V2Size == MemoryLocation::UnknownSize)
     return false;
 
   const VariableGEPIndex &Var0 = VarIndices[0], &Var1 = VarIndices[1];
 
   if (Var0.ZExtBits != Var1.ZExtBits || Var0.SExtBits != Var1.SExtBits ||
       Var0.Scale != -Var1.Scale)
     return false;
 
   unsigned Width = Var1.V->getType()->getIntegerBitWidth();
 
   // We'll strip off the Extensions of Var0 and Var1 and do another round
   // of GetLinearExpression decomposition. In the example above, if Var0
   // is zext(%x + 1) we should get V1 == %x and V1Offset == 1.
 
   APInt V0Scale(Width, 0), V0Offset(Width, 0), V1Scale(Width, 0),
       V1Offset(Width, 0);
   bool NSW = true, NUW = true;
   unsigned V0ZExtBits = 0, V0SExtBits = 0, V1ZExtBits = 0, V1SExtBits = 0;
   const Value *V0 = GetLinearExpression(Var0.V, V0Scale, V0Offset, V0ZExtBits,
-                                        V0SExtBits, *DL, 0, AC, DT, NSW, NUW);
+                                        V0SExtBits, DL, 0, AC, DT, NSW, NUW);
   NSW = true, NUW = true;
   const Value *V1 = GetLinearExpression(Var1.V, V1Scale, V1Offset, V1ZExtBits,
-                                        V1SExtBits, *DL, 0, AC, DT, NSW, NUW);
+                                        V1SExtBits, DL, 0, AC, DT, NSW, NUW);
 
   if (V0Scale != V1Scale || V0ZExtBits != V1ZExtBits ||
       V0SExtBits != V1SExtBits || !isValueEqualInPotentialCycles(V0, V1))
     return false;
 
   // We have a hit - Var0 and Var1 only differ by a constant offset!
 
   // If we've been sext'ed then zext'd the maximum difference between Var0 and
   // Var1 is possible to calculate, but we're just interested in the absolute
   // minumum difference between the two. The minimum distance may occur due to
   // wrapping; consider "add i3 %i, 5": if %i == 7 then 7 + 5 mod 8 == 4, and so
   // the minimum distance between %i and %i + 5 is 3.
   APInt MinDiff = V0Offset - V1Offset,
         Wrapped = APInt::getMaxValue(Width) - MinDiff + APInt(Width, 1);
   MinDiff = APIntOps::umin(MinDiff, Wrapped);
   uint64_t MinDiffBytes = MinDiff.getZExtValue() * std::abs(Var0.Scale);
 
   // We can't definitely say whether GEP1 is before or after V2 due to wrapping
   // arithmetic (i.e. for some values of GEP1 and V2 GEP1 < V2, and for other
   // values GEP1 > V2). We'll therefore only declare NoAlias if both V1Size and
   // V2Size can fit in the MinDiffBytes gap.
   return V1Size + std::abs(BaseOffset) <= MinDiffBytes &&
          V2Size + std::abs(BaseOffset) <= MinDiffBytes;
 }
+
+//===----------------------------------------------------------------------===//
+// BasicAliasAnalysis Pass
+//===----------------------------------------------------------------------===//
+
+char BasicAA::PassID;
+
+BasicAAResult BasicAA::run(Function &F, AnalysisManager<Function> *AM) {
+  return BasicAAResult(F.getParent()->getDataLayout(),
+                       AM->getResult<TargetLibraryAnalysis>(F),
+                       AM->getResult<AssumptionAnalysis>(F),
+                       AM->getCachedResult<DominatorTreeAnalysis>(F),
+                       AM->getCachedResult<LoopAnalysis>(F));
+}
+
+char BasicAAWrapperPass::ID = 0;
+void BasicAAWrapperPass::anchor() {}
+
+INITIALIZE_PASS_BEGIN(BasicAAWrapperPass, "basicaa",
+                      "Basic Alias Analysis (stateless AA impl)", true, true)
+INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
+INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
+INITIALIZE_PASS_END(BasicAAWrapperPass, "basicaa",
+                    "Basic Alias Analysis (stateless AA impl)", true, true)
+
+FunctionPass *llvm::createBasicAAWrapperPass() {
+  return new BasicAAWrapperPass();
+}
+
+bool BasicAAWrapperPass::runOnFunction(Function &F) {
+  auto &ACT = getAnalysis<AssumptionCacheTracker>();
+  auto &TLIWP = getAnalysis<TargetLibraryInfoWrapperPass>();
+  auto *DTWP = getAnalysisIfAvailable<DominatorTreeWrapperPass>();
+  auto *LIWP = getAnalysisIfAvailable<LoopInfoWrapperPass>();
+
+  Result.reset(new BasicAAResult(F.getParent()->getDataLayout(), TLIWP.getTLI(),
+                                 ACT.getAssumptionCache(F),
+                                 DTWP ? &DTWP->getDomTree() : nullptr,
+                                 LIWP ? &LIWP->getLoopInfo() : nullptr));
+
+  return false;
+}
+
+void BasicAAWrapperPass::getAnalysisUsage(AnalysisUsage &AU) const {
+  AU.setPreservesAll();
+  AU.addRequired<AssumptionCacheTracker>();
+  AU.addRequired<TargetLibraryInfoWrapperPass>();
+}
+
+BasicAAResult llvm::createLegacyPMBasicAAResult(Pass &P, Function &F) {
+  return BasicAAResult(
+      F.getParent()->getDataLayout(),
+      P.getAnalysis<TargetLibraryInfoWrapperPass>().getTLI(),
+      P.getAnalysis<AssumptionCacheTracker>().getAssumptionCache(F));
+}

llvm/trunk/lib/Analysis/CFLAliasAnalysis.cpp

 //===----------------------------------------------------------------------===//
 
 #include "llvm/Analysis/CFLAliasAnalysis.h"
 #include "StratifiedSets.h"
 #include "llvm/ADT/BitVector.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/None.h"
 #include "llvm/ADT/Optional.h"
-#include "llvm/Analysis/AliasAnalysis.h"
+#include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/InstVisitor.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/Allocator.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"
 #include <algorithm>
 #include <cassert>
 #include <memory>
 #include <tuple>
 
 using namespace llvm;
 
 #define DEBUG_TYPE "cfl-aa"
 
-// -- Setting up/registering CFLAA pass -- //
-char CFLAliasAnalysis::ID = 0;
-
-INITIALIZE_AG_PASS(CFLAliasAnalysis, AliasAnalysis, "cfl-aa",
-                   "CFL-Based AA implementation", false, true, false)
-
-ImmutablePass *llvm::createCFLAliasAnalysisPass() {
-  return new CFLAliasAnalysis();
-}
+CFLAAResult::CFLAAResult(const TargetLibraryInfo &TLI) : AAResultBase(TLI) {}
+CFLAAResult::CFLAAResult(CFLAAResult &&Arg) : AAResultBase(std::move(Arg)) {}
 
 // \brief Information we have about a function and would like to keep around
-struct CFLAliasAnalysis::FunctionInfo {
+struct CFLAAResult::FunctionInfo {
   StratifiedSets<Value *> Sets;
   // Lots of functions have < 4 returns. Adjust as necessary.
   SmallVector<Value *, 4> ReturnedValues;
 
   FunctionInfo(StratifiedSets<Value *> &&S, SmallVector<Value *, 4> &&RV)
       : Sets(std::move(S)), ReturnedValues(std::move(RV)) {}
 };
 
-CFLAliasAnalysis::CFLAliasAnalysis() : ImmutablePass(ID) {
-  initializeCFLAliasAnalysisPass(*PassRegistry::getPassRegistry());
-}
-
-CFLAliasAnalysis::~CFLAliasAnalysis() {}
-
-void CFLAliasAnalysis::getAnalysisUsage(AnalysisUsage &AU) const {
-  AliasAnalysis::getAnalysisUsage(AU);
-}
-
-void *CFLAliasAnalysis::getAdjustedAnalysisPointer(const void *ID) {
-  if (ID == &AliasAnalysis::ID)
-    return (AliasAnalysis *)this;
-  return this;
-}
-
 // Try to go from a Value* to a Function*. Never returns nullptr.
 static Optional<Function *> parentFunctionOfValue(Value *);
 
 // Returns possible functions called by the Inst* into the given
 // SmallVectorImpl. Returns true if targets found, false otherwise.
 // This is templated because InvokeInst/CallInst give us the same
 // set of functions that we care about, and I don't like repeating
 // myself.
struct Edge {
   StratifiedAttrs AdditionalAttrs;
 
   Edge(Value *From, Value *To, EdgeType W, StratifiedAttrs A)
       : From(From), To(To), Weight(W), AdditionalAttrs(A) {}
 };
 
 // \brief Gets the edges our graph should have, based on an Instruction*
 class GetEdgesVisitor : public InstVisitor<GetEdgesVisitor, void> {
-  CFLAliasAnalysis &AA;
+  CFLAAResult &AA;
   SmallVectorImpl<Edge> &Output;
 
 public:
-  GetEdgesVisitor(CFLAliasAnalysis &AA, SmallVectorImpl<Edge> &Output)
+  GetEdgesVisitor(CFLAAResult &AA, SmallVectorImpl<Edge> &Output)
       : AA(AA), Output(Output) {}
 
   void visitInstruction(Instruction &) {
     llvm_unreachable("Unsupported instruction encountered");
   }
 
   void visitPtrToIntInst(PtrToIntInst &Inst) {
     auto *Ptr = Inst.getOperand(0);

 
 // Given a Value, potentially return which AttrIndex it maps to.
 static Optional<StratifiedAttr> valueToAttrIndex(Value *Val);
 
 // Gets the inverse of a given EdgeType.
 static EdgeType flipWeight(EdgeType);
 
 // Gets edges of the given Instruction*, writing them to the SmallVector*.
-static void argsToEdges(CFLAliasAnalysis &, Instruction *,
-                        SmallVectorImpl<Edge> &);
+static void argsToEdges(CFLAAResult &, Instruction *, SmallVectorImpl<Edge> &);
 
 // Gets edges of the given ConstantExpr*, writing them to the SmallVector*.
-static void argsToEdges(CFLAliasAnalysis &, ConstantExpr *,
-                        SmallVectorImpl<Edge> &);
+static void argsToEdges(CFLAAResult &, ConstantExpr *, SmallVectorImpl<Edge> &);
 
 // Gets the "Level" that one should travel in StratifiedSets
 // given an EdgeType.
 static Level directionOfEdgeType(EdgeType);
 
 // Builds the graph needed for constructing the StratifiedSets for the
 // given function
-static void buildGraphFrom(CFLAliasAnalysis &, Function *,
+static void buildGraphFrom(CFLAAResult &, Function *,
                            SmallVectorImpl<Value *> &, NodeMapT &, GraphT &);
 
 // Gets the edges of a ConstantExpr as if it was an Instruction. This
 // function also acts on any nested ConstantExprs, adding the edges
 // of those to the given SmallVector as well.
-static void constexprToEdges(CFLAliasAnalysis &, ConstantExpr &,
+static void constexprToEdges(CFLAAResult &, ConstantExpr &,
                              SmallVectorImpl<Edge> &);
 
 // Given an Instruction, this will add it to the graph, along with any
 // Instructions that are potentially only available from said Instruction
 // For example, given the following line:
 //   %0 = load i16* getelementptr ([1 x i16]* @a, 0, 0), align 2
 // addInstructionToGraph would add both the `load` and `getelementptr`
 // instructions to the graph appropriately.
-static void addInstructionToGraph(CFLAliasAnalysis &, Instruction &,
+static void addInstructionToGraph(CFLAAResult &, Instruction &,
                                   SmallVectorImpl<Value *> &, NodeMapT &,
                                   GraphT &);
 
 // Notes whether it would be pointless to add the given Value to our sets.
 static bool canSkipAddingToSets(Value *Val);
 
 static Optional<Function *> parentFunctionOfValue(Value *Val) {
   if (auto *Inst = dyn_cast<Instruction>(Val)) {
static EdgeType flipWeight(EdgeType Initial) {
   case EdgeType::Dereference:
     return EdgeType::Reference;
   case EdgeType::Reference:
     return EdgeType::Dereference;
   }
   llvm_unreachable("Incomplete coverage of EdgeType enum");
 }
 
-static void argsToEdges(CFLAliasAnalysis &Analysis, Instruction *Inst,
+static void argsToEdges(CFLAAResult &Analysis, Instruction *Inst,
                         SmallVectorImpl<Edge> &Output) {
   assert(hasUsefulEdges(Inst) &&
          "Expected instructions to have 'useful' edges");
   GetEdgesVisitor v(Analysis, Output);
   v.visit(Inst);
 }
 
-static void argsToEdges(CFLAliasAnalysis &Analysis, ConstantExpr *CE,
+static void argsToEdges(CFLAAResult &Analysis, ConstantExpr *CE,
                         SmallVectorImpl<Edge> &Output) {
   assert(hasUsefulEdges(CE) && "Expected constant expr to have 'useful' edges");
   GetEdgesVisitor v(Analysis, Output);
   v.visitConstantExpr(CE);
 }
 
 static Level directionOfEdgeType(EdgeType Weight) {
   switch (Weight) {
   case EdgeType::Reference:
     return Level::Above;
   case EdgeType::Dereference:
     return Level::Below;
   case EdgeType::Assign:
     return Level::Same;
   }
   llvm_unreachable("Incomplete switch coverage");
 }
 
-static void constexprToEdges(CFLAliasAnalysis &Analysis,
+static void constexprToEdges(CFLAAResult &Analysis,
                              ConstantExpr &CExprToCollapse,
                              SmallVectorImpl<Edge> &Results) {
   SmallVector<ConstantExpr *, 4> Worklist;
   Worklist.push_back(&CExprToCollapse);
 
   SmallVector<Edge, 8> ConstexprEdges;
   SmallPtrSet<ConstantExpr *, 4> Visited;
   while (!Worklist.empty()) {
for (auto &Edge : ConstexprEdges) {
         if (Visited.insert(Nested).second)
           Worklist.push_back(Nested);
     }
 
     Results.append(ConstexprEdges.begin(), ConstexprEdges.end());
   }
 }
 
-static void addInstructionToGraph(CFLAliasAnalysis &Analysis, Instruction &Inst,
+static void addInstructionToGraph(CFLAAResult &Analysis, Instruction &Inst,
                                   SmallVectorImpl<Value *> &ReturnedValues,
                                   NodeMapT &Map, GraphT &Graph) {
   const auto findOrInsertNode = [&Map, &Graph](Value *Val) {
     auto Pair = Map.insert(std::make_pair(Val, GraphT::Node()));
     auto &Iter = Pair.first;
     if (Pair.second) {
       auto NewNode = Graph.addNode();
       Iter->second = NewNode;
for (ConstantExpr *CE : ConstantExprs) {
     std::for_each(Edges.begin(), Edges.end(), addEdgeToGraph);
   }
 }
 
 // Aside: We may remove graph construction entirely, because it doesn't really
 // buy us much that we don't already have. I'd like to add interprocedural
 // analysis prior to this however, in case that somehow requires the graph
 // produced by this for efficient execution
-static void buildGraphFrom(CFLAliasAnalysis &Analysis, Function *Fn,
+static void buildGraphFrom(CFLAAResult &Analysis, Function *Fn,
                            SmallVectorImpl<Value *> &ReturnedValues,
                            NodeMapT &Map, GraphT &Graph) {
   for (auto &Bb : Fn->getBasicBlockList())
     for (auto &Inst : Bb.getInstList())
       addInstructionToGraph(Analysis, Inst, ReturnedValues, Map, Graph);
 }
 
 static bool canSkipAddingToSets(Value *Val) {
bool CanStoreMutableData =
         isa<GlobalValue>(Val) || isa<ConstantExpr>(Val) || Container;
     return !CanStoreMutableData;
   }
 
   return false;
 }
 
 // Builds the graph + StratifiedSets for a function.
-CFLAliasAnalysis::FunctionInfo CFLAliasAnalysis::buildSetsFrom(Function *Fn) {
+CFLAAResult::FunctionInfo CFLAAResult::buildSetsFrom(Function *Fn) {
   NodeMapT Map;
   GraphT Graph;
   SmallVector<Value *, 4> ReturnedValues;
 
   buildGraphFrom(*this, Fn, ReturnedValues, Map, Graph);
 
   DenseMap<GraphT::Node, Value *> NodeValueMap;
   NodeValueMap.resize(Map.size());
for (auto &Arg : Fn->args()) {
     auto Attrs = valueToAttrIndex(&Arg);
     if (Attrs.hasValue())
       Builder.noteAttributes(&Arg, *Attrs);
   }
 
   return FunctionInfo(Builder.build(), std::move(ReturnedValues));
 }
 
-void CFLAliasAnalysis::scan(Function *Fn) {
+void CFLAAResult::scan(Function *Fn) {
   auto InsertPair = Cache.insert(std::make_pair(Fn, Optional<FunctionInfo>()));
   (void)InsertPair;
   assert(InsertPair.second &&
          "Trying to scan a function that has already been cached");
 
   FunctionInfo Info(buildSetsFrom(Fn));
   Cache[Fn] = std::move(Info);
   Handles.push_front(FunctionHandle(Fn, this));
 }
 
-void CFLAliasAnalysis::evict(Function *Fn) { Cache.erase(Fn); }
+void CFLAAResult::evict(Function *Fn) { Cache.erase(Fn); }
 
 /// \brief Ensures that the given function is available in the cache.
 /// Returns the appropriate entry from the cache.
-const Optional<CFLAliasAnalysis::FunctionInfo> &
-CFLAliasAnalysis::ensureCached(Function *Fn) {
+const Optional<CFLAAResult::FunctionInfo> &
+CFLAAResult::ensureCached(Function *Fn) {
   auto Iter = Cache.find(Fn);
   if (Iter == Cache.end()) {
     scan(Fn);
     Iter = Cache.find(Fn);
     assert(Iter != Cache.end());
     assert(Iter->second.hasValue());
   }
   return Iter->second;
 }
 
-AliasResult CFLAliasAnalysis::query(const MemoryLocation &LocA,
-                                    const MemoryLocation &LocB) {
+AliasResult CFLAAResult::query(const MemoryLocation &LocA,
   auto *ValA = const_cast<Value *>(LocA.Ptr);
   auto *ValB = const_cast<Value *>(LocB.Ptr);
 
   Function *Fn = nullptr;
   auto MaybeFnA = parentFunctionOfValue(ValA);
   auto MaybeFnB = parentFunctionOfValue(ValB);
   if (!MaybeFnA.hasValue() && !MaybeFnB.hasValue()) {
     // The only times this is known to happen are when globals + InlineAsm
AliasResult CFLAAResult::query(const MemoryLocation &LocA,
   // differentiate
 
   if (SetA.Index == SetB.Index)
     return MayAlias;
 
   return NoAlias;
 }
 
-bool CFLAliasAnalysis::doInitialization(Module &M) {
-  InitializeAliasAnalysis(this, &M.getDataLayout());
-  return true;
+CFLAAResult CFLAA::run(Function &F, AnalysisManager<Function> *AM) {
+  return CFLAAResult(AM->getResult<TargetLibraryAnalysis>(F));
+}
+
+char CFLAA::PassID;
+
+char CFLAAWrapperPass::ID = 0;
+INITIALIZE_PASS_BEGIN(CFLAAWrapperPass, "cfl-aa", "CFL-Based Alias Analysis",
+                      false, true)
+INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
+INITIALIZE_PASS_END(CFLAAWrapperPass, "cfl-aa", "CFL-Based Alias Analysis",
+                    false, true)
+
+ImmutablePass *llvm::createCFLAAWrapperPass() { return new CFLAAWrapperPass(); }
+
+CFLAAWrapperPass::CFLAAWrapperPass() : ImmutablePass(ID) {
+  initializeCFLAAWrapperPassPass(*PassRegistry::getPassRegistry());
+}
+
+bool CFLAAWrapperPass::doInitialization(Module &M) {
+  Result.reset(
+      new CFLAAResult(getAnalysis<TargetLibraryInfoWrapperPass>().getTLI()));
+  return false;
+}
+
+bool CFLAAWrapperPass::doFinalization(Module &M) {
+  Result.reset();
+  return false;
+}
+
+void CFLAAWrapperPass::getAnalysisUsage(AnalysisUsage &AU) const {
+  AU.setPreservesAll();
+  AU.addRequired<TargetLibraryInfoWrapperPass>();
 }

llvm/trunk/lib/Analysis/CMakeLists.txt

 add_llvm_library(LLVMAnalysis
   AliasAnalysis.cpp
-  AliasAnalysisCounter.cpp
   AliasAnalysisEvaluator.cpp
   AliasSetTracker.cpp
   Analysis.cpp
   AssumptionCache.cpp
   BasicAliasAnalysis.cpp
   BlockFrequencyInfo.cpp
   BlockFrequencyInfoImpl.cpp
   BranchProbabilityInfo.cpp
add_llvm_library(LLVMAnalysis
   LoopInfo.cpp
   LoopPass.cpp
   MemDepPrinter.cpp
   MemDerefPrinter.cpp
   MemoryBuiltins.cpp
   MemoryDependenceAnalysis.cpp
   MemoryLocation.cpp
   ModuleDebugInfoPrinter.cpp
-  NoAliasAnalysis.cpp
   ObjCARCAliasAnalysis.cpp
   ObjCARCAnalysisUtils.cpp
   ObjCARCInstKind.cpp
   OrderedBasicBlock.cpp
   PHITransAddr.cpp
   PostDominators.cpp
   PtrUseVisitor.cpp
   RegionInfo.cpp

llvm/trunk/lib/Analysis/DependenceAnalysis.cpp

 
 //===----------------------------------------------------------------------===//
 // basics
 
 INITIALIZE_PASS_BEGIN(DependenceAnalysis, "da",
                       "Dependence Analysis", true, true)
 INITIALIZE_PASS_DEPENDENCY(LoopInfoWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(ScalarEvolutionWrapperPass)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_END(DependenceAnalysis, "da",
                     "Dependence Analysis", true, true)
 
 char DependenceAnalysis::ID = 0;
 
 
 FunctionPass *llvm::createDependenceAnalysisPass() {
   return new DependenceAnalysis();
 }
 
 
 bool DependenceAnalysis::runOnFunction(Function &F) {
   this->F = &F;
-  AA = &getAnalysis<AliasAnalysis>();
+  AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
   SE = &getAnalysis<ScalarEvolutionWrapperPass>().getSE();
   LI = &getAnalysis<LoopInfoWrapperPass>().getLoopInfo();
   return false;
 }
 
 
 void DependenceAnalysis::releaseMemory() {
 }
 
 
 void DependenceAnalysis::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.setPreservesAll();
-  AU.addRequiredTransitive<AliasAnalysis>();
+  AU.addRequiredTransitive<AAResultsWrapperPass>();
   AU.addRequiredTransitive<ScalarEvolutionWrapperPass>();
   AU.addRequiredTransitive<LoopInfoWrapperPass>();
 }
 
 
 // Used to test the dependence analyzer.
 // Looks through the function, noting loads and stores.
 // Calls depends() on every possible pair and prints out the result.

llvm/trunk/lib/Analysis/GlobalsModRef.cpp

 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Analysis/GlobalsModRef.h"
 #include "llvm/ADT/SCCIterator.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Analysis/MemoryBuiltins.h"
+#include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/Analysis/ValueTracking.h"
 #include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/InstIterator.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/IntrinsicInst.h"
 #include "llvm/IR/Module.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/CommandLine.h"
static cl::opt<bool> EnableUnsafeGlobalsModRefAliasResults(
     "enable-unsafe-globalsmodref-alias-results", cl::init(false), cl::Hidden);
 
 /// The mod/ref information collected for a particular function.
 ///
 /// We collect information about mod/ref behavior of a function here, both in
 /// general and as pertains to specific globals. We only have this detailed
 /// information when we know *something* useful about the behavior. If we
 /// saturate to fully general mod/ref, we remove the info for the function.
-class GlobalsModRef::FunctionInfo {
+class GlobalsAAResult::FunctionInfo {
   typedef SmallDenseMap<const GlobalValue *, ModRefInfo, 16> GlobalInfoMapType;
 
   /// Build a wrapper struct that has 8-byte alignment. All heap allocations
   /// should provide this much alignment at least, but this makes it clear we
   /// specifically rely on this amount of alignment.
   struct LLVM_ALIGNAS(8) AlignedMap {
     AlignedMap() {}
     AlignedMap(const AlignedMap &Arg) : Map(Arg.Map) {}
private:
   /// All of the information is encoded into a single pointer, with a three bit
   /// integer in the low three bits. The high bit provides a flag for when this
   /// function may read any global. The low two bits are the ModRefInfo. And
   /// the pointer, when non-null, points to a map from GlobalValue to
   /// ModRefInfo specific to that GlobalValue.
   PointerIntPair<AlignedMap *, 3, unsigned, AlignedMapPointerTraits> Info;
 };
 
-void GlobalsModRef::DeletionCallbackHandle::deleted() {
+void GlobalsAAResult::DeletionCallbackHandle::deleted() {
   Value *V = getValPtr();
   if (auto *F = dyn_cast<Function>(V))
-    GMR.FunctionInfos.erase(F);
+    GAR.FunctionInfos.erase(F);
 
   if (GlobalValue *GV = dyn_cast<GlobalValue>(V)) {
-    if (GMR.NonAddressTakenGlobals.erase(GV)) {
+    if (GAR.NonAddressTakenGlobals.erase(GV)) {
       // This global might be an indirect global.  If so, remove it and
       // remove any AllocRelatedValues for it.
-      if (GMR.IndirectGlobals.erase(GV)) {
+      if (GAR.IndirectGlobals.erase(GV)) {
         // Remove any entries in AllocsForIndirectGlobals for this global.
-        for (auto I = GMR.AllocsForIndirectGlobals.begin(),
-                  E = GMR.AllocsForIndirectGlobals.end();
+        for (auto I = GAR.AllocsForIndirectGlobals.begin(),
+                  E = GAR.AllocsForIndirectGlobals.end();
              I != E; ++I)
           if (I->second == GV)
-            GMR.AllocsForIndirectGlobals.erase(I);
+            GAR.AllocsForIndirectGlobals.erase(I);
       }
 
       // Scan the function info we have collected and remove this global
       // from all of them.
-      for (auto &FIPair : GMR.FunctionInfos)
+      for (auto &FIPair : GAR.FunctionInfos)
         FIPair.second.eraseModRefInfoForGlobal(*GV);
     }
   }
 
   // If this is an allocation related to an indirect global, remove it.
-  GMR.AllocsForIndirectGlobals.erase(V);
+  GAR.AllocsForIndirectGlobals.erase(V);
 
   // And clear out the handle.
   setValPtr(nullptr);
-  GMR.Handles.erase(I);
+  GAR.Handles.erase(I);
   // This object is now destroyed!
 }
 
-char GlobalsModRef::ID = 0;
-INITIALIZE_AG_PASS_BEGIN(GlobalsModRef, AliasAnalysis, "globalsmodref-aa",
-                         "Simple mod/ref analysis for globals", false, true,
-                         false)
-INITIALIZE_PASS_DEPENDENCY(CallGraphWrapperPass)
-INITIALIZE_AG_PASS_END(GlobalsModRef, AliasAnalysis, "globalsmodref-aa",
-                       "Simple mod/ref analysis for globals", false, true,
-                       false)
-
-Pass *llvm::createGlobalsModRefPass() { return new GlobalsModRef(); }
-
-GlobalsModRef::GlobalsModRef() : ModulePass(ID) {
-  initializeGlobalsModRefPass(*PassRegistry::getPassRegistry());
-}
-
-FunctionModRefBehavior GlobalsModRef::getModRefBehavior(const Function *F) {
+FunctionModRefBehavior GlobalsAAResult::getModRefBehavior(const Function *F) {
   FunctionModRefBehavior Min = FMRB_UnknownModRefBehavior;
 
   if (FunctionInfo *FI = getFunctionInfo(F)) {
     if (FI->getModRefInfo() == MRI_NoModRef)
       Min = FMRB_DoesNotAccessMemory;
     else if ((FI->getModRefInfo() & MRI_Mod) == 0)
       Min = FMRB_OnlyReadsMemory;
   }
 
-  return FunctionModRefBehavior(AliasAnalysis::getModRefBehavior(F) & Min);
+  return FunctionModRefBehavior(AAResultBase::getModRefBehavior(F) & Min);
 }
 
-FunctionModRefBehavior GlobalsModRef::getModRefBehavior(ImmutableCallSite CS) {
+FunctionModRefBehavior
+GlobalsAAResult::getModRefBehavior(ImmutableCallSite CS) {
   FunctionModRefBehavior Min = FMRB_UnknownModRefBehavior;
 
   if (const Function *F = CS.getCalledFunction())
     if (FunctionInfo *FI = getFunctionInfo(F)) {
       if (FI->getModRefInfo() == MRI_NoModRef)
         Min = FMRB_DoesNotAccessMemory;
       else if ((FI->getModRefInfo() & MRI_Mod) == 0)
         Min = FMRB_OnlyReadsMemory;
     }
 
-  return FunctionModRefBehavior(AliasAnalysis::getModRefBehavior(CS) & Min);
+  return FunctionModRefBehavior(AAResultBase::getModRefBehavior(CS) & Min);
 }
 
 /// Returns the function info for the function, or null if we don't have
 /// anything useful to say about it.
-GlobalsModRef::FunctionInfo *GlobalsModRef::getFunctionInfo(const Function *F) {
+GlobalsAAResult::FunctionInfo *
+GlobalsAAResult::getFunctionInfo(const Function *F) {
   auto I = FunctionInfos.find(F);
   if (I != FunctionInfos.end())
     return &I->second;
   return nullptr;
 }
 
 /// AnalyzeGlobals - Scan through the users of all of the internal
 /// GlobalValue's in the program.  If none of them have their "address taken"
 /// (really, their address passed to something nontrivial), record this fact,
 /// and record the functions that they are used directly in.
-void GlobalsModRef::AnalyzeGlobals(Module &M) {
+void GlobalsAAResult::AnalyzeGlobals(Module &M) {
   SmallPtrSet<Function *, 64> TrackedFunctions;
   for (Function &F : M)
     if (F.hasLocalLinkage())
       if (!AnalyzeUsesOfPointer(&F)) {
         // Remember that we are tracking this global.
         NonAddressTakenGlobals.insert(&F);
         TrackedFunctions.insert(&F);
         Handles.emplace_front(*this, &F);

 }
 
 /// AnalyzeUsesOfPointer - Look at all of the users of the specified pointer.
 /// If this is used by anything complex (i.e., the address escapes), return
 /// true.  Also, while we are at it, keep track of those functions that read and
 /// write to the value.
 ///
 /// If OkayStoreDest is non-null, stores into this global are allowed.
-bool GlobalsModRef::AnalyzeUsesOfPointer(Value *V,
+bool GlobalsAAResult::AnalyzeUsesOfPointer(Value *V,
                                            SmallPtrSetImpl<Function *> *Readers,
                                            SmallPtrSetImpl<Function *> *Writers,
                                            GlobalValue *OkayStoreDest) {
   if (!V->getType()->isPointerTy())
     return true;
 
   for (Use &U : V->uses()) {
     User *I = U.getUser();
     if (LoadInst *LI = dyn_cast<LoadInst>(I)) {
       if (Readers)
         Readers->insert(LI->getParent()->getParent());
for (Use &U : V->uses()) {
     } else if (Operator::getOpcode(I) == Instruction::BitCast) {
       if (AnalyzeUsesOfPointer(I, Readers, Writers, OkayStoreDest))
         return true;
     } else if (auto CS = CallSite(I)) {
       // Make sure that this is just the function being called, not that it is
       // passing into the function.
       if (!CS.isCallee(&U)) {
         // Detect calls to free.
-        if (isFreeCall(I, TLI)) {
+        if (isFreeCall(I, &TLI)) {
           if (Writers)
             Writers->insert(CS->getParent()->getParent());
         } else {
           return true; // Argument of an unknown call.
         }
       }
     } else if (ICmpInst *ICI = dyn_cast<ICmpInst>(I)) {
       if (!isa<ConstantPointerNull>(ICI->getOperand(1)))
         return true; // Allow comparison against null.
     } else {
       return true;
     }
   }
 
   return false;
 }
 
 /// AnalyzeIndirectGlobalMemory - We found an non-address-taken global variable
 /// which holds a pointer type.  See if the global always points to non-aliased
 /// heap memory: that is, all initializers of the globals are allocations, and
 /// those allocations have no use other than initialization of the global.
 /// Further, all loads out of GV must directly use the memory, not store the
 /// pointer somewhere.  If this is true, we consider the memory pointed to by
 /// GV to be owned by GV and can disambiguate other pointers from it.
-bool GlobalsModRef::AnalyzeIndirectGlobalMemory(GlobalValue *GV) {
+bool GlobalsAAResult::AnalyzeIndirectGlobalMemory(GlobalValue *GV) {
   // Keep track of values related to the allocation of the memory, f.e. the
   // value produced by the malloc call and any casts.
   std::vector<Value *> AllocRelatedValues;
 
   // Walk the user list of the global.  If we find anything other than a direct
   // load or store, bail out.
   for (User *U : GV->users()) {
     if (LoadInst *LI = dyn_cast<LoadInst>(U)) {
if (LoadInst *LI = dyn_cast<LoadInst>(U)) {
       // If storing the null pointer, ignore it.
       if (isa<ConstantPointerNull>(SI->getOperand(0)))
         continue;
 
       // Check the value being stored.
       Value *Ptr = GetUnderlyingObject(SI->getOperand(0),
                                        GV->getParent()->getDataLayout());
 
-      if (!isAllocLikeFn(Ptr, TLI))
+      if (!isAllocLikeFn(Ptr, &TLI))
         return false; // Too hard to analyze.
 
       // Analyze all uses of the allocation.  If any of them are used in a
       // non-simple way (e.g. stored to another global) bail out.
       if (AnalyzeUsesOfPointer(Ptr, /*Readers*/ nullptr, /*Writers*/ nullptr,
                                GV))
         return false; // Loaded pointer escapes.
 
bool GlobalsAAResult::AnalyzeIndirectGlobalMemory(GlobalValue *GV) {
   Handles.front().I = Handles.begin();
   return true;
 }
 
 /// AnalyzeCallGraph - At this point, we know the functions where globals are
 /// immediately stored to and read from.  Propagate this information up the call
 /// graph to all callers and compute the mod/ref info for all memory for each
 /// function.
-void GlobalsModRef::AnalyzeCallGraph(CallGraph &CG, Module &M) {
+void GlobalsAAResult::AnalyzeCallGraph(CallGraph &CG, Module &M) {
   // We do a bottom-up SCC traversal of the call graph.  In other words, we
   // visit all callees before callers (leaf-first).
   for (scc_iterator<CallGraph *> I = scc_begin(&CG); !I.isAtEnd(); ++I) {
     const std::vector<CallGraphNode *> &SCC = *I;
     assert(!SCC.empty() && "SCC with no functions?");
 
     if (!SCC[0]->getFunction()) {
       // Calls externally - can't say anything useful.  Remove any existing
for (auto *Node : SCC) {
         break; // The mod/ref lattice saturates here.
       for (Instruction &I : instructions(Node->getFunction())) {
         if (FI.getModRefInfo() == MRI_ModRef)
           break; // The mod/ref lattice saturates here.
 
         // We handle calls specially because the graph-relevant aspects are
         // handled above.
         if (auto CS = CallSite(&I)) {
-          if (isAllocationFn(&I, TLI) || isFreeCall(&I, TLI)) {
+          if (isAllocationFn(&I, &TLI) || isFreeCall(&I, &TLI)) {
             // FIXME: It is completely unclear why this is necessary and not
             // handled by the above graph code.
             FI.addModRefInfo(MRI_ModRef);
           } else if (Function *Callee = CS.getCalledFunction()) {
             // The callgraph doesn't include intrinsic calls.
             if (Callee->isIntrinsic()) {
               FunctionModRefBehavior Behaviour =
-                  AliasAnalysis::getModRefBehavior(Callee);
+                  AAResultBase::getModRefBehavior(Callee);
               FI.addModRefInfo(ModRefInfo(Behaviour & MRI_ModRef));
             }
           }
           continue;
         }
 
         // All non-call instructions we use the primary predicates for whether
         // thay read or write memory.

 // optimization pass that would make this mistake. The closest example is
 // a transformation pass which does reg2mem of SSA values but stores them into
 // global variables temporarily before restoring the global variable's value.
 // This could be useful to expose "benign" races for example. However, it seems
 // reasonable to require that a pass which introduces escapes of global
 // variables in this way to either not trust AA results while the escape is
 // active, or to be forced to operate as a module pass that cannot co-exist
 // with an alias analysis such as GMR.
-bool GlobalsModRef::isNonEscapingGlobalNoAlias(const GlobalValue *GV,
+bool GlobalsAAResult::isNonEscapingGlobalNoAlias(const GlobalValue *GV,
                                                  const Value *V) {
   // In order to know that the underlying object cannot alias the
   // non-addr-taken global, we must know that it would have to be an escape.
   // Thus if the underlying object is a function argument, a load from
   // a global, or the return of a function, it cannot alias. We can also
   // recurse through PHI nodes and select nodes provided all of their inputs
   // resolve to one of these known-escaping roots.
   SmallPtrSet<const Value *, 8> Visited;
   SmallVector<const Value *, 8> Inputs;
if (auto *InputGV = dyn_cast<GlobalValue>(Input)) {
       auto *GVar = dyn_cast<GlobalVariable>(GV);
       auto *InputGVar = dyn_cast<GlobalVariable>(InputGV);
       if (GVar && InputGVar &&
           !GVar->isDeclaration() && !InputGVar->isDeclaration() &&
           !GVar->mayBeOverridden() && !InputGVar->mayBeOverridden()) {
         Type *GVType = GVar->getInitializer()->getType();
         Type *InputGVType = InputGVar->getInitializer()->getType();
         if (GVType->isSized() && InputGVType->isSized() &&
-            (DL->getTypeAllocSize(GVType) > 0) &&
-            (DL->getTypeAllocSize(InputGVType) > 0))
+            (DL.getTypeAllocSize(GVType) > 0) &&
+            (DL.getTypeAllocSize(InputGVType) > 0))
           continue;
       }
 
       // Conservatively return false, even though we could be smarter
       // (e.g. look through GlobalAliases).
       return false;
     }
 
     if (isa<Argument>(Input) || isa<CallInst>(Input) ||
         isa<InvokeInst>(Input)) {
       // Arguments to functions or returns from functions are inherently
       // escaping, so we can immediately classify those as not aliasing any
       // non-addr-taken globals.
       continue;
     }
     if (auto *LI = dyn_cast<LoadInst>(Input)) {
       // A pointer loaded from a global would have been captured, and we know
       // that the global is non-escaping, so no alias.
-      if (isa<GlobalValue>(GetUnderlyingObject(LI->getPointerOperand(), *DL)))
+      if (isa<GlobalValue>(GetUnderlyingObject(LI->getPointerOperand(), DL)))
         continue;
 
       // Otherwise, a load could come from anywhere, so bail.
       return false;
     }
 
     // Recurse through a limited number of selects and PHIs. This is an
     // arbitrary depth of 4, lower numbers could be used to fix compile time
     // issues if needed, but this is generally expected to be only be important
     // for small depths.
     if (++Depth > 4)
       return false;
     if (auto *SI = dyn_cast<SelectInst>(Input)) {
-      const Value *LHS = GetUnderlyingObject(SI->getTrueValue(), *DL);
-      const Value *RHS = GetUnderlyingObject(SI->getFalseValue(), *DL);
+      const Value *LHS = GetUnderlyingObject(SI->getTrueValue(), DL);
+      const Value *RHS = GetUnderlyingObject(SI->getFalseValue(), DL);
       if (Visited.insert(LHS).second)
         Inputs.push_back(LHS);
       if (Visited.insert(RHS).second)
         Inputs.push_back(RHS);
       continue;
     }
     if (auto *PN = dyn_cast<PHINode>(Input)) {
       for (const Value *Op : PN->incoming_values()) {
-        Op = GetUnderlyingObject(Op, *DL);
+        Op = GetUnderlyingObject(Op, DL);
         if (Visited.insert(Op).second)
           Inputs.push_back(Op);
       }
       continue;
     }
 
     // FIXME: It would be good to handle other obvious no-alias cases here, but
     // it isn't clear how to do so reasonbly without building a small version
-    // of BasicAA into this code. We could recurse into AliasAnalysis::alias
+    // of BasicAA into this code. We could recurse into AAResultBase::alias
     // here but that seems likely to go poorly as we're inside the
     // implementation of such a query. Until then, just conservatievly retun
     // false.
     return false;
   } while (!Inputs.empty());
 
   // If all the inputs to V were definitively no-alias, then V is no-alias.
   return true;
 }
 
 /// alias - If one of the pointers is to a global that we are tracking, and the
 /// other is some random pointer, we know there cannot be an alias, because the
 /// address of the global isn't taken.
-AliasResult GlobalsModRef::alias(const MemoryLocation &LocA,
+AliasResult GlobalsAAResult::alias(const MemoryLocation &LocA,
                                    const MemoryLocation &LocB) {
   // Get the base object these pointers point to.
-  const Value *UV1 = GetUnderlyingObject(LocA.Ptr, *DL);
-  const Value *UV2 = GetUnderlyingObject(LocB.Ptr, *DL);
+  const Value *UV1 = GetUnderlyingObject(LocA.Ptr, DL);
+  const Value *UV2 = GetUnderlyingObject(LocB.Ptr, DL);
 
   // If either of the underlying values is a global, they may be non-addr-taken
   // globals, which we can answer queries about.
   const GlobalValue *GV1 = dyn_cast<GlobalValue>(UV1);
   const GlobalValue *GV2 = dyn_cast<GlobalValue>(UV2);
   if (GV1 || GV2) {
     // If the global's address is taken, pretend we don't know it's a pointer to
     // the global.
AliasResult GlobalsAAResult::alias(const MemoryLocation &LocA,
 
   // If one is based on an indirect global and the other isn't, it isn't
   // strictly safe but we can fake this result if necessary for performance.
   // This does not appear to be a common problem in practice.
   if (EnableUnsafeGlobalsModRefAliasResults)
     if ((GV1 || GV2) && GV1 != GV2)
       return NoAlias;
 
-  return AliasAnalysis::alias(LocA, LocB);
+  return AAResultBase::alias(LocA, LocB);
 }
 
-ModRefInfo GlobalsModRef::getModRefInfo(ImmutableCallSite CS,
+ModRefInfo GlobalsAAResult::getModRefInfo(ImmutableCallSite CS,
                                           const MemoryLocation &Loc) {
   unsigned Known = MRI_ModRef;
 
   // If we are asking for mod/ref info of a direct call with a pointer to a
   // global we are tracking, return information if we have it.
-  const DataLayout &DL = CS.getCaller()->getParent()->getDataLayout();
   if (const GlobalValue *GV =
           dyn_cast<GlobalValue>(GetUnderlyingObject(Loc.Ptr, DL)))
     if (GV->hasLocalLinkage())
       if (const Function *F = CS.getCalledFunction())
         if (NonAddressTakenGlobals.count(GV))
           if (const FunctionInfo *FI = getFunctionInfo(F))
             Known = FI->getModRefInfoForGlobal(*GV);
 
   if (Known == MRI_NoModRef)
     return MRI_NoModRef; // No need to query other mod/ref analyses
-  return ModRefInfo(Known & AliasAnalysis::getModRefInfo(CS, Loc));
+  return ModRefInfo(Known & AAResultBase::getModRefInfo(CS, Loc));
+}
+
+GlobalsAAResult::GlobalsAAResult(const DataLayout &DL,
+                                 const TargetLibraryInfo &TLI)
+    : AAResultBase(TLI), DL(DL) {}
+
+GlobalsAAResult::GlobalsAAResult(GlobalsAAResult &&Arg)
+    : AAResultBase(std::move(Arg)), DL(Arg.DL) {}
+
+/*static*/ GlobalsAAResult
+GlobalsAAResult::analyzeModule(Module &M, const TargetLibraryInfo &TLI,
+                               CallGraph &CG) {
+  GlobalsAAResult Result(M.getDataLayout(), TLI);
+
+  // Find non-addr taken globals.
+  Result.AnalyzeGlobals(M);
+
+  // Propagate on CG.
+  Result.AnalyzeCallGraph(CG, M);
+
+  return Result;
+}
+
+GlobalsAAResult GlobalsAA::run(Module &M, AnalysisManager<Module> *AM) {
+  return GlobalsAAResult::analyzeModule(M,
+                                        AM->getResult<TargetLibraryAnalysis>(M),
+                                        AM->getResult<CallGraphAnalysis>(M));
+}
+
+char GlobalsAA::PassID;
+
+char GlobalsAAWrapperPass::ID = 0;
+INITIALIZE_PASS_BEGIN(GlobalsAAWrapperPass, "globals-aa",
+                      "Globals Alias Analysis", false, true)
+INITIALIZE_PASS_DEPENDENCY(CallGraphWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
+INITIALIZE_PASS_END(GlobalsAAWrapperPass, "globals-aa",
+                    "Globals Alias Analysis", false, true)
+
+ModulePass *llvm::createGlobalsAAWrapperPass() {
+  return new GlobalsAAWrapperPass();
+}
+
+GlobalsAAWrapperPass::GlobalsAAWrapperPass() : ModulePass(ID) {
+  initializeGlobalsAAWrapperPassPass(*PassRegistry::getPassRegistry());
+}
+
+bool GlobalsAAWrapperPass::runOnModule(Module &M) {
+  Result.reset(new GlobalsAAResult(GlobalsAAResult::analyzeModule(
+      M, getAnalysis<TargetLibraryInfoWrapperPass>().getTLI(),
+      getAnalysis<CallGraphWrapperPass>().getCallGraph())));
+  return false;
+}
+
+bool GlobalsAAWrapperPass::doFinalization(Module &M) {
+  Result.reset();
+  return false;
+}
+
+void GlobalsAAWrapperPass::getAnalysisUsage(AnalysisUsage &AU) const {
+  AU.setPreservesAll();
+  AU.addRequired<CallGraphWrapperPass>();
+  AU.addRequired<TargetLibraryInfoWrapperPass>();
 }

llvm/trunk/lib/Analysis/Lint.cpp

public:
     Lint() : FunctionPass(ID), MessagesStr(Messages) {
       initializeLintPass(*PassRegistry::getPassRegistry());
     }
 
     bool runOnFunction(Function &F) override;
 
     void getAnalysisUsage(AnalysisUsage &AU) const override {
       AU.setPreservesAll();
-      AU.addRequired<AliasAnalysis>();
+      AU.addRequired<AAResultsWrapperPass>();
       AU.addRequired<AssumptionCacheTracker>();
       AU.addRequired<TargetLibraryInfoWrapperPass>();
       AU.addRequired<DominatorTreeWrapperPass>();
     }
     void print(raw_ostream &O, const Module *M) const override {}
 
     void WriteValues(ArrayRef<const Value *> Vs) {
       for (const Value *V : Vs) {

 }
 
 char Lint::ID = 0;
 INITIALIZE_PASS_BEGIN(Lint, "lint", "Statically lint-checks LLVM IR",
                       false, true)
 INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
 INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_END(Lint, "lint", "Statically lint-checks LLVM IR",
                     false, true)
 
 // Assert - We know that cond should be true, if not print an error message.
 #define Assert(C, ...) \
     do { if (!(C)) { CheckFailed(__VA_ARGS__); return; } } while (0)
 
 // Lint::run - This is the main Analysis entry point for a
 // function.
 //
 bool Lint::runOnFunction(Function &F) {
   Mod = F.getParent();
   DL = &F.getParent()->getDataLayout();
-  AA = &getAnalysis<AliasAnalysis>();
+  AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
   AC = &getAnalysis<AssumptionCacheTracker>().getAssumptionCache(F);
   DT = &getAnalysis<DominatorTreeWrapperPass>().getDomTree();
   TLI = &getAnalysis<TargetLibraryInfoWrapperPass>().getTLI();
   visit(F);
   dbgs() << MessagesStr.str();
   Messages.clear();
   return false;
 }

llvm/trunk/lib/Analysis/LoopAccessAnalysis.cpp

for (Loop *L : depth_first(TopLevelLoop)) {
       LAI.print(OS, 4);
     }
 }
 
 bool LoopAccessAnalysis::runOnFunction(Function &F) {
   SE = &getAnalysis<ScalarEvolutionWrapperPass>().getSE();
   auto *TLIP = getAnalysisIfAvailable<TargetLibraryInfoWrapperPass>();
   TLI = TLIP ? &TLIP->getTLI() : nullptr;
-  AA = &getAnalysis<AliasAnalysis>();
+  AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
   DT = &getAnalysis<DominatorTreeWrapperPass>().getDomTree();
   LI = &getAnalysis<LoopInfoWrapperPass>().getLoopInfo();
 
   return false;
 }
 
 void LoopAccessAnalysis::getAnalysisUsage(AnalysisUsage &AU) const {
     AU.addRequired<ScalarEvolutionWrapperPass>();
-    AU.addRequired<AliasAnalysis>();
+    AU.addRequired<AAResultsWrapperPass>();
     AU.addRequired<DominatorTreeWrapperPass>();
     AU.addRequired<LoopInfoWrapperPass>();
 
     AU.setPreservesAll();
 }
 
 char LoopAccessAnalysis::ID = 0;
 static const char laa_name[] = "Loop Access Analysis";
 #define LAA_NAME "loop-accesses"
 
 INITIALIZE_PASS_BEGIN(LoopAccessAnalysis, LAA_NAME, laa_name, false, true)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(ScalarEvolutionWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(LoopInfoWrapperPass)
 INITIALIZE_PASS_END(LoopAccessAnalysis, LAA_NAME, laa_name, false, true)
 
 namespace llvm {
   Pass *createLAAPass() {
     return new LoopAccessAnalysis();
   }
 }

llvm/trunk/lib/Analysis/MemDepPrinter.cpp

MemDepPrinter() : FunctionPass(ID) {
       initializeMemDepPrinterPass(*PassRegistry::getPassRegistry());
     }
 
     bool runOnFunction(Function &F) override;
 
     void print(raw_ostream &OS, const Module * = nullptr) const override;
 
     void getAnalysisUsage(AnalysisUsage &AU) const override {
-      AU.addRequiredTransitive<AliasAnalysis>();
+      AU.addRequiredTransitive<AAResultsWrapperPass>();
       AU.addRequiredTransitive<MemoryDependenceAnalysis>();
       AU.setPreservesAll();
     }
 
     void releaseMemory() override {
       Deps.clear();
       F = nullptr;
     }

llvm/trunk/lib/Analysis/MemoryDependenceAnalysis.cpp

 // Limit on the number of memdep results to process.
 static const unsigned int NumResultsLimit = 100;
 
 char MemoryDependenceAnalysis::ID = 0;
 
 // Register this pass...
 INITIALIZE_PASS_BEGIN(MemoryDependenceAnalysis, "memdep",
                 "Memory Dependence Analysis", false, true)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
 INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
 INITIALIZE_PASS_END(MemoryDependenceAnalysis, "memdep",
                       "Memory Dependence Analysis", false, true)
 
 MemoryDependenceAnalysis::MemoryDependenceAnalysis()
     : FunctionPass(ID) {
   initializeMemoryDependenceAnalysisPass(*PassRegistry::getPassRegistry());
 }
void MemoryDependenceAnalysis::releaseMemory() {
   PredCache.clear();
 }
 
 /// getAnalysisUsage - Does not modify anything.  It uses Alias Analysis.
 ///
 void MemoryDependenceAnalysis::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.setPreservesAll();
   AU.addRequired<AssumptionCacheTracker>();
-  AU.addRequiredTransitive<AliasAnalysis>();
+  AU.addRequiredTransitive<AAResultsWrapperPass>();
   AU.addRequiredTransitive<TargetLibraryInfoWrapperPass>();
 }
 
 bool MemoryDependenceAnalysis::runOnFunction(Function &F) {
-  AA = &getAnalysis<AliasAnalysis>();
+  AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
   AC = &getAnalysis<AssumptionCacheTracker>().getAssumptionCache(F);
   DominatorTreeWrapperPass *DTWP =
       getAnalysisIfAvailable<DominatorTreeWrapperPass>();
   DT = DTWP ? &DTWP->getDomTree() : nullptr;
   TLI = &getAnalysis<TargetLibraryInfoWrapperPass>().getTLI();
   return false;
 }
 

llvm/trunk/lib/Analysis/NoAliasAnalysis.cpp

-//===- NoAliasAnalysis.cpp - Minimal Alias Analysis Impl ------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file defines the default implementation of the Alias Analysis interface
-// that simply returns "I don't know" for all queries.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Analysis/Passes.h"
-#include "llvm/Analysis/AliasAnalysis.h"
-#include "llvm/IR/DataLayout.h"
-#include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/Module.h"
-#include "llvm/Pass.h"
-using namespace llvm;
-
-namespace {
-  /// NoAA - This class implements the -no-aa pass, which always returns "I
-  /// don't know" for alias queries.  NoAA is unlike other alias analysis
-  /// implementations, in that it does not chain to a previous analysis.  As
-  /// such it doesn't follow many of the rules that other alias analyses must.
-  ///
-  struct NoAA : public ImmutablePass, public AliasAnalysis {
-    static char ID; // Class identification, replacement for typeinfo
-    NoAA() : ImmutablePass(ID) {
-      initializeNoAAPass(*PassRegistry::getPassRegistry());
-    }
-
-    void getAnalysisUsage(AnalysisUsage &AU) const override {}
-
-    bool doInitialization(Module &M) override {
-      // Note: NoAA does not call InitializeAliasAnalysis because it's
-      // special and does not support chaining.
-      DL = &M.getDataLayout();
-      return true;
-    }
-
-    AliasResult alias(const MemoryLocation &LocA,
-                      const MemoryLocation &LocB) override {
-      return MayAlias;
-    }
-
-    FunctionModRefBehavior getModRefBehavior(ImmutableCallSite CS) override {
-      return FMRB_UnknownModRefBehavior;
-    }
-    FunctionModRefBehavior getModRefBehavior(const Function *F) override {
-      return FMRB_UnknownModRefBehavior;
-    }
-
-    bool pointsToConstantMemory(const MemoryLocation &Loc,
-                                bool OrLocal) override {
-      return false;
-    }
-    ModRefInfo getArgModRefInfo(ImmutableCallSite CS,
-                                unsigned ArgIdx) override {
-      return MRI_ModRef;
-    }
-
-    ModRefInfo getModRefInfo(ImmutableCallSite CS,
-                             const MemoryLocation &Loc) override {
-      return MRI_ModRef;
-    }
-    ModRefInfo getModRefInfo(ImmutableCallSite CS1,
-                             ImmutableCallSite CS2) override {
-      return MRI_ModRef;
-    }
-
-    /// getAdjustedAnalysisPointer - This method is used when a pass implements
-    /// an analysis interface through multiple inheritance.  If needed, it
-    /// should override this to adjust the this pointer as needed for the
-    /// specified pass info.
-    void *getAdjustedAnalysisPointer(const void *ID) override {
-      if (ID == &AliasAnalysis::ID)
-        return (AliasAnalysis*)this;
-      return this;
-    }
-  };
-}  // End of anonymous namespace
-
-// Register this pass...
-char NoAA::ID = 0;
-INITIALIZE_AG_PASS(NoAA, AliasAnalysis, "no-aa",
-                   "No Alias Analysis (always returns 'may' alias)",
-                   true, true, true)
-
-ImmutablePass *llvm::createNoAAPass() { return new NoAA(); }

llvm/trunk/lib/Analysis/ObjCARCAliasAnalysis.cpp

 ///
 /// WARNING: This file knows about certain library functions. It recognizes them
 /// by name, and hardwires knowledge of their semantics.
 ///
 /// WARNING: This file knows about how certain Objective-C library functions are
 /// used. Naive LLVM IR transformations which would otherwise be
 /// behavior-preserving may break these assumptions.
 ///
+/// TODO: Theoretically we could check for dependencies between objc_* calls
+/// and FMRB_OnlyAccessesArgumentPointees calls or other well-behaved calls.
+///
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Analysis/ObjCARCAliasAnalysis.h"
 #include "llvm/Analysis/ObjCARCAnalysisUtils.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/Instruction.h"
 #include "llvm/IR/Value.h"
 #include "llvm/InitializePasses.h"
 #include "llvm/PassAnalysisSupport.h"
 #include "llvm/PassSupport.h"
 
 #define DEBUG_TYPE "objc-arc-aa"
 
 using namespace llvm;
 using namespace llvm::objcarc;
 
-// Register this pass...
-char ObjCARCAliasAnalysis::ID = 0;
-INITIALIZE_AG_PASS(ObjCARCAliasAnalysis, AliasAnalysis, "objc-arc-aa",
-                   "ObjC-ARC-Based Alias Analysis", false, true, false)
-
-ImmutablePass *llvm::createObjCARCAliasAnalysisPass() {
-  return new ObjCARCAliasAnalysis();
-}
-
-bool ObjCARCAliasAnalysis::doInitialization(Module &M) {
-  InitializeAliasAnalysis(this, &M.getDataLayout());
-  return true;
-}
-
-void ObjCARCAliasAnalysis::getAnalysisUsage(AnalysisUsage &AU) const {
-  AU.setPreservesAll();
-  AliasAnalysis::getAnalysisUsage(AU);
-}
-
-AliasResult ObjCARCAliasAnalysis::alias(const MemoryLocation &LocA,
-                                        const MemoryLocation &LocB) {
+AliasResult ObjCARCAAResult::alias(const MemoryLocation &LocA,
   if (!EnableARCOpts)
-    return AliasAnalysis::alias(LocA, LocB);
+    return AAResultBase::alias(LocA, LocB);
 
   // First, strip off no-ops, including ObjC-specific no-ops, and try making a
   // precise alias query.
   const Value *SA = GetRCIdentityRoot(LocA.Ptr);
   const Value *SB = GetRCIdentityRoot(LocB.Ptr);
   AliasResult Result =
-      AliasAnalysis::alias(MemoryLocation(SA, LocA.Size, LocA.AATags),
-                           MemoryLocation(SB, LocB.Size, LocB.AATags));
+      AAResultBase::alias(MemoryLocation(SA, LocA.Size, LocA.AATags),
   if (Result != MayAlias)
     return Result;
 
   // If that failed, climb to the underlying object, including climbing through
   // ObjC-specific no-ops, and try making an imprecise alias query.
-  const Value *UA = GetUnderlyingObjCPtr(SA, *DL);
-  const Value *UB = GetUnderlyingObjCPtr(SB, *DL);
+  const Value *UA = GetUnderlyingObjCPtr(SA, DL);
+  const Value *UB = GetUnderlyingObjCPtr(SB, DL);
   if (UA != SA || UB != SB) {
-    Result = AliasAnalysis::alias(MemoryLocation(UA), MemoryLocation(UB));
+    Result = AAResultBase::alias(MemoryLocation(UA), MemoryLocation(UB));
     // We can't use MustAlias or PartialAlias results here because
     // GetUnderlyingObjCPtr may return an offsetted pointer value.
     if (Result == NoAlias)
       return NoAlias;
   }
 
   // If that failed, fail. We don't need to chain here, since that's covered
   // by the earlier precise query.
   return MayAlias;
 }
 
-bool ObjCARCAliasAnalysis::pointsToConstantMemory(const MemoryLocation &Loc,
-                                                  bool OrLocal) {
+bool ObjCARCAAResult::pointsToConstantMemory(const MemoryLocation &Loc,
   if (!EnableARCOpts)
-    return AliasAnalysis::pointsToConstantMemory(Loc, OrLocal);
+    return AAResultBase::pointsToConstantMemory(Loc, OrLocal);
 
   // First, strip off no-ops, including ObjC-specific no-ops, and try making
   // a precise alias query.
   const Value *S = GetRCIdentityRoot(Loc.Ptr);
-  if (AliasAnalysis::pointsToConstantMemory(
+  if (AAResultBase::pointsToConstantMemory(
           MemoryLocation(S, Loc.Size, Loc.AATags), OrLocal))
     return true;
 
   // If that failed, climb to the underlying object, including climbing through
   // ObjC-specific no-ops, and try making an imprecise alias query.
-  const Value *U = GetUnderlyingObjCPtr(S, *DL);
+  const Value *U = GetUnderlyingObjCPtr(S, DL);
   if (U != S)
-    return AliasAnalysis::pointsToConstantMemory(MemoryLocation(U), OrLocal);
+    return AAResultBase::pointsToConstantMemory(MemoryLocation(U), OrLocal);
 
   // If that failed, fail. We don't need to chain here, since that's covered
   // by the earlier precise query.
   return false;
 }
 
-FunctionModRefBehavior
-ObjCARCAliasAnalysis::getModRefBehavior(ImmutableCallSite CS) {
-  // We have nothing to do. Just chain to the next AliasAnalysis.
-  return AliasAnalysis::getModRefBehavior(CS);
-}
-
-FunctionModRefBehavior
-ObjCARCAliasAnalysis::getModRefBehavior(const Function *F) {
+FunctionModRefBehavior ObjCARCAAResult::getModRefBehavior(const Function *F) {
   if (!EnableARCOpts)
-    return AliasAnalysis::getModRefBehavior(F);
+    return AAResultBase::getModRefBehavior(F);
 
   switch (GetFunctionClass(F)) {
   case ARCInstKind::NoopCast:
     return FMRB_DoesNotAccessMemory;
   default:
     break;
   }
 
-  return AliasAnalysis::getModRefBehavior(F);
+  return AAResultBase::getModRefBehavior(F);
 }
 
-ModRefInfo ObjCARCAliasAnalysis::getModRefInfo(ImmutableCallSite CS,
-                                               const MemoryLocation &Loc) {
+ModRefInfo ObjCARCAAResult::getModRefInfo(ImmutableCallSite CS,
   if (!EnableARCOpts)
-    return AliasAnalysis::getModRefInfo(CS, Loc);
+    return AAResultBase::getModRefInfo(CS, Loc);
 
   switch (GetBasicARCInstKind(CS.getInstruction())) {
   case ARCInstKind::Retain:
   case ARCInstKind::RetainRV:
   case ARCInstKind::Autorelease:
   case ARCInstKind::AutoreleaseRV:
   case ARCInstKind::NoopCast:
   case ARCInstKind::AutoreleasepoolPush:
   case ARCInstKind::FusedRetainAutorelease:
   case ARCInstKind::FusedRetainAutoreleaseRV:
     // These functions don't access any memory visible to the compiler.
     // Note that this doesn't include objc_retainBlock, because it updates
     // pointers when it copies block data.
     return MRI_NoModRef;
   default:
     break;
   }
 
-  return AliasAnalysis::getModRefInfo(CS, Loc);
+  return AAResultBase::getModRefInfo(CS, Loc);
+}
+
+ObjCARCAAResult ObjCARCAA::run(Function &F, AnalysisManager<Function> *AM) {
+  return ObjCARCAAResult(F.getParent()->getDataLayout(),
+                         AM->getResult<TargetLibraryAnalysis>(F));
 }
 
-ModRefInfo ObjCARCAliasAnalysis::getModRefInfo(ImmutableCallSite CS1,
-                                               ImmutableCallSite CS2) {
-  // TODO: Theoretically we could check for dependencies between objc_* calls
-  // and FMRB_OnlyAccessesArgumentPointees calls or other well-behaved calls.
-  return AliasAnalysis::getModRefInfo(CS1, CS2);
+char ObjCARCAA::PassID;
+
+char ObjCARCAAWrapperPass::ID = 0;
+INITIALIZE_PASS_BEGIN(ObjCARCAAWrapperPass, "objc-arc-aa",
+                      "ObjC-ARC-Based Alias Analysis", false, true)
+INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
+INITIALIZE_PASS_END(ObjCARCAAWrapperPass, "objc-arc-aa",
+                    "ObjC-ARC-Based Alias Analysis", false, true)
+
+ImmutablePass *llvm::createObjCARCAAWrapperPass() {
+  return new ObjCARCAAWrapperPass();
+}
+
+ObjCARCAAWrapperPass::ObjCARCAAWrapperPass() : ImmutablePass(ID) {
+  initializeObjCARCAAWrapperPassPass(*PassRegistry::getPassRegistry());
+}
+
+bool ObjCARCAAWrapperPass::doInitialization(Module &M) {
+  Result.reset(new ObjCARCAAResult(
+      M.getDataLayout(), getAnalysis<TargetLibraryInfoWrapperPass>().getTLI()));
+  return false;
+}
+
+bool ObjCARCAAWrapperPass::doFinalization(Module &M) {
+  Result.reset();
+  return false;
+}
+
+void ObjCARCAAWrapperPass::getAnalysisUsage(AnalysisUsage &AU) const {
+  AU.setPreservesAll();
+  AU.addRequired<TargetLibraryInfoWrapperPass>();
 }

llvm/trunk/lib/Analysis/ScalarEvolutionAliasAnalysis.cpp

 // dependencies between different iterations.
 //
 // ScalarEvolution has a more complete understanding of pointer arithmetic
 // than BasicAliasAnalysis' collection of ad-hoc analyses.
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Analysis/ScalarEvolutionAliasAnalysis.h"
+#include "llvm/Analysis/TargetLibraryInfo.h"
 using namespace llvm;
 
-// Register this pass...
-char ScalarEvolutionAliasAnalysis::ID = 0;
-INITIALIZE_AG_PASS_BEGIN(ScalarEvolutionAliasAnalysis, AliasAnalysis, "scev-aa",
-                         "ScalarEvolution-based Alias Analysis", false, true,
-                         false)
-INITIALIZE_PASS_DEPENDENCY(ScalarEvolutionWrapperPass)
-INITIALIZE_AG_PASS_END(ScalarEvolutionAliasAnalysis, AliasAnalysis, "scev-aa",
-                       "ScalarEvolution-based Alias Analysis", false, true,
-                       false)
-
-FunctionPass *llvm::createScalarEvolutionAliasAnalysisPass() {
-  return new ScalarEvolutionAliasAnalysis();
-}
-
-void ScalarEvolutionAliasAnalysis::getAnalysisUsage(AnalysisUsage &AU) const {
-  AU.addRequiredTransitive<ScalarEvolutionWrapperPass>();
-  AU.setPreservesAll();
-  AliasAnalysis::getAnalysisUsage(AU);
-}
-
-bool ScalarEvolutionAliasAnalysis::runOnFunction(Function &F) {
-  InitializeAliasAnalysis(this, &F.getParent()->getDataLayout());
-  SE = &getAnalysis<ScalarEvolutionWrapperPass>().getSE();
-  return false;
-}
-
-/// Given an expression, try to find a base value.
-///
-/// Returns null if none was found.
-Value *ScalarEvolutionAliasAnalysis::GetBaseValue(const SCEV *S) {
-  if (const SCEVAddRecExpr *AR = dyn_cast<SCEVAddRecExpr>(S)) {
-    // In an addrec, assume that the base will be in the start, rather
-    // than the step.
-    return GetBaseValue(AR->getStart());
-  } else if (const SCEVAddExpr *A = dyn_cast<SCEVAddExpr>(S)) {
-    // If there's a pointer operand, it'll be sorted at the end of the list.
-    const SCEV *Last = A->getOperand(A->getNumOperands() - 1);
-    if (Last->getType()->isPointerTy())
-      return GetBaseValue(Last);
-  } else if (const SCEVUnknown *U = dyn_cast<SCEVUnknown>(S)) {
-    // This is a leaf node.
-    return U->getValue();
-  }
-  // No Identified object found.
-  return nullptr;
-}
-
-AliasResult ScalarEvolutionAliasAnalysis::alias(const MemoryLocation &LocA,
-                                                const MemoryLocation &LocB) {
+AliasResult SCEVAAResult::alias(const MemoryLocation &LocA,
   // If either of the memory references is empty, it doesn't matter what the
   // pointer values are. This allows the code below to ignore this special
   // case.
   if (LocA.Size == 0 || LocB.Size == 0)
     return NoAlias;
 
-  // This is ScalarEvolutionAliasAnalysis. Get the SCEVs!
-  const SCEV *AS = SE->getSCEV(const_cast<Value *>(LocA.Ptr));
-  const SCEV *BS = SE->getSCEV(const_cast<Value *>(LocB.Ptr));
+  // This is SCEVAAResult. Get the SCEVs!
+  const SCEV *AS = SE.getSCEV(const_cast<Value *>(LocA.Ptr));
+  const SCEV *BS = SE.getSCEV(const_cast<Value *>(LocB.Ptr));
 
   // If they evaluate to the same expression, it's a MustAlias.
   if (AS == BS)
     return MustAlias;
 
   // If something is known about the difference between the two addresses,
   // see if it's enough to prove a NoAlias.
-  if (SE->getEffectiveSCEVType(AS->getType()) ==
-      SE->getEffectiveSCEVType(BS->getType())) {
-    unsigned BitWidth = SE->getTypeSizeInBits(AS->getType());
+  if (SE.getEffectiveSCEVType(AS->getType()) ==
+      SE.getEffectiveSCEVType(BS->getType())) {
+    unsigned BitWidth = SE.getTypeSizeInBits(AS->getType());
     APInt ASizeInt(BitWidth, LocA.Size);
     APInt BSizeInt(BitWidth, LocB.Size);
 
     // Compute the difference between the two pointers.
-    const SCEV *BA = SE->getMinusSCEV(BS, AS);
+    const SCEV *BA = SE.getMinusSCEV(BS, AS);
 
     // Test whether the difference is known to be great enough that memory of
     // the given sizes don't overlap. This assumes that ASizeInt and BSizeInt
     // are non-zero, which is special-cased above.
-    if (ASizeInt.ule(SE->getUnsignedRange(BA).getUnsignedMin()) &&
-        (-BSizeInt).uge(SE->getUnsignedRange(BA).getUnsignedMax()))
+    if (ASizeInt.ule(SE.getUnsignedRange(BA).getUnsignedMin()) &&
+        (-BSizeInt).uge(SE.getUnsignedRange(BA).getUnsignedMax()))
       return NoAlias;
 
     // Folding the subtraction while preserving range information can be tricky
     // (because of INT_MIN, etc.); if the prior test failed, swap AS and BS
     // and try again to see if things fold better that way.
 
     // Compute the difference between the two pointers.
-    const SCEV *AB = SE->getMinusSCEV(AS, BS);
+    const SCEV *AB = SE.getMinusSCEV(AS, BS);
 
     // Test whether the difference is known to be great enough that memory of
     // the given sizes don't overlap. This assumes that ASizeInt and BSizeInt
     // are non-zero, which is special-cased above.
-    if (BSizeInt.ule(SE->getUnsignedRange(AB).getUnsignedMin()) &&
-        (-ASizeInt).uge(SE->getUnsignedRange(AB).getUnsignedMax()))
+    if (BSizeInt.ule(SE.getUnsignedRange(AB).getUnsignedMin()) &&
+        (-ASizeInt).uge(SE.getUnsignedRange(AB).getUnsignedMax()))
       return NoAlias;
   }
 
   // If ScalarEvolution can find an underlying object, form a new query.
   // The correctness of this depends on ScalarEvolution not recognizing
   // inttoptr and ptrtoint operators.
   Value *AO = GetBaseValue(AS);
   Value *BO = GetBaseValue(BS);
   if ((AO && AO != LocA.Ptr) || (BO && BO != LocB.Ptr))
     if (alias(MemoryLocation(AO ? AO : LocA.Ptr,
                              AO ? +MemoryLocation::UnknownSize : LocA.Size,
                              AO ? AAMDNodes() : LocA.AATags),
               MemoryLocation(BO ? BO : LocB.Ptr,
                              BO ? +MemoryLocation::UnknownSize : LocB.Size,
                              BO ? AAMDNodes() : LocB.AATags)) == NoAlias)
       return NoAlias;
 
   // Forward the query to the next analysis.
-  return AliasAnalysis::alias(LocA, LocB);
+  return AAResultBase::alias(LocA, LocB);
+}
+
+/// Given an expression, try to find a base value.
+///
+/// Returns null if none was found.
+Value *SCEVAAResult::GetBaseValue(const SCEV *S) {
+  if (const SCEVAddRecExpr *AR = dyn_cast<SCEVAddRecExpr>(S)) {
+    // In an addrec, assume that the base will be in the start, rather
+    // than the step.
+    return GetBaseValue(AR->getStart());
+  } else if (const SCEVAddExpr *A = dyn_cast<SCEVAddExpr>(S)) {
+    // If there's a pointer operand, it'll be sorted at the end of the list.
+    const SCEV *Last = A->getOperand(A->getNumOperands() - 1);
+    if (Last->getType()->isPointerTy())
+      return GetBaseValue(Last);
+  } else if (const SCEVUnknown *U = dyn_cast<SCEVUnknown>(S)) {
+    // This is a leaf node.
+    return U->getValue();
+  }
+  // No Identified object found.
+  return nullptr;
+}
+
+SCEVAAResult SCEVAA::run(Function &F, AnalysisManager<Function> *AM) {
+  return SCEVAAResult(AM->getResult<TargetLibraryAnalysis>(F),
+                      AM->getResult<ScalarEvolutionAnalysis>(F));
+}
+
+char SCEVAA::PassID;
+
+char SCEVAAWrapperPass::ID = 0;
+INITIALIZE_PASS_BEGIN(SCEVAAWrapperPass, "scev-aa",
+                      "ScalarEvolution-based Alias Analysis", false, true)
+INITIALIZE_PASS_DEPENDENCY(ScalarEvolutionWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
+INITIALIZE_PASS_END(SCEVAAWrapperPass, "scev-aa",
+                    "ScalarEvolution-based Alias Analysis", false, true)
+
+FunctionPass *llvm::createSCEVAAWrapperPass() {
+  return new SCEVAAWrapperPass();
+}
+
+SCEVAAWrapperPass::SCEVAAWrapperPass() : FunctionPass(ID) {
+  initializeSCEVAAWrapperPassPass(*PassRegistry::getPassRegistry());
+}
+
+bool SCEVAAWrapperPass::runOnFunction(Function &F) {
+  Result.reset(
+      new SCEVAAResult(getAnalysis<TargetLibraryInfoWrapperPass>().getTLI(),
+                       getAnalysis<ScalarEvolutionWrapperPass>().getSE()));
+  return false;
+}
+
+void SCEVAAWrapperPass::getAnalysisUsage(AnalysisUsage &AU) const {
+  AU.setPreservesAll();
+  AU.addRequired<ScalarEvolutionWrapperPass>();
+  AU.addRequired<TargetLibraryInfoWrapperPass>();
 }

llvm/trunk/lib/Analysis/ScopedNoAliasAA.cpp

 // has a set of noalias scopes in some domain that is superset of the alias
 // scopes in that domain of some other instruction, then the two memory
 // accesses are assumed not to alias.
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Analysis/ScopedNoAliasAA.h"
 #include "llvm/ADT/SmallPtrSet.h"
-#include "llvm/Analysis/AliasAnalysis.h"
+#include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/Metadata.h"
 #include "llvm/IR/Module.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/CommandLine.h"
 using namespace llvm;
 
public:
   const MDNode *getDomain() const {
     if (Node->getNumOperands() < 2)
       return nullptr;
     return dyn_cast_or_null<MDNode>(Node->getOperand(1));
   }
 };
 } // End of anonymous namespace
 
-// Register this pass...
-char ScopedNoAliasAA::ID = 0;
-INITIALIZE_AG_PASS(ScopedNoAliasAA, AliasAnalysis, "scoped-noalias",
-                   "Scoped NoAlias Alias Analysis", false, true, false)
+AliasResult ScopedNoAliasAAResult::alias(const MemoryLocation &LocA,
+                                         const MemoryLocation &LocB) {
+  if (!EnableScopedNoAlias)
+    return AAResultBase::alias(LocA, LocB);
+
+  // Get the attached MDNodes.
+  const MDNode *AScopes = LocA.AATags.Scope, *BScopes = LocB.AATags.Scope;
+
+  const MDNode *ANoAlias = LocA.AATags.NoAlias, *BNoAlias = LocB.AATags.NoAlias;
+
+  if (!mayAliasInScopes(AScopes, BNoAlias))
+    return NoAlias;
+
+  if (!mayAliasInScopes(BScopes, ANoAlias))
+    return NoAlias;
 
-ImmutablePass *llvm::createScopedNoAliasAAPass() {
-  return new ScopedNoAliasAA();
+  // If they may alias, chain to the next AliasAnalysis.
+  return AAResultBase::alias(LocA, LocB);
 }
 
-bool ScopedNoAliasAA::doInitialization(Module &M) {
-  InitializeAliasAnalysis(this, &M.getDataLayout());
-  return true;
+ModRefInfo ScopedNoAliasAAResult::getModRefInfo(ImmutableCallSite CS,
+                                                const MemoryLocation &Loc) {
+  if (!EnableScopedNoAlias)
+    return AAResultBase::getModRefInfo(CS, Loc);
+
+  if (!mayAliasInScopes(Loc.AATags.Scope, CS.getInstruction()->getMetadata(
+                                              LLVMContext::MD_noalias)))
+    return MRI_NoModRef;
+
+  if (!mayAliasInScopes(
+          CS.getInstruction()->getMetadata(LLVMContext::MD_alias_scope),
+          Loc.AATags.NoAlias))
+    return MRI_NoModRef;
+
+  return AAResultBase::getModRefInfo(CS, Loc);
 }
 
-void ScopedNoAliasAA::getAnalysisUsage(AnalysisUsage &AU) const {
-  AU.setPreservesAll();
-  AliasAnalysis::getAnalysisUsage(AU);
+ModRefInfo ScopedNoAliasAAResult::getModRefInfo(ImmutableCallSite CS1,
+                                                ImmutableCallSite CS2) {
+  if (!EnableScopedNoAlias)
+    return AAResultBase::getModRefInfo(CS1, CS2);
+
+  if (!mayAliasInScopes(
+          CS1.getInstruction()->getMetadata(LLVMContext::MD_alias_scope),
+          CS2.getInstruction()->getMetadata(LLVMContext::MD_noalias)))
+    return MRI_NoModRef;
+
+  if (!mayAliasInScopes(
+          CS2.getInstruction()->getMetadata(LLVMContext::MD_alias_scope),
+          CS1.getInstruction()->getMetadata(LLVMContext::MD_noalias)))
+    return MRI_NoModRef;
+
+  return AAResultBase::getModRefInfo(CS1, CS2);
 }
 
-void ScopedNoAliasAA::collectMDInDomain(
+void ScopedNoAliasAAResult::collectMDInDomain(
     const MDNode *List, const MDNode *Domain,
     SmallPtrSetImpl<const MDNode *> &Nodes) const {
   for (unsigned i = 0, ie = List->getNumOperands(); i != ie; ++i)
     if (const MDNode *MD = dyn_cast<MDNode>(List->getOperand(i)))
       if (AliasScopeNode(MD).getDomain() == Domain)
         Nodes.insert(MD);
 }
 
-bool ScopedNoAliasAA::mayAliasInScopes(const MDNode *Scopes,
+bool ScopedNoAliasAAResult::mayAliasInScopes(const MDNode *Scopes,
                                              const MDNode *NoAlias) const {
   if (!Scopes || !NoAlias)
     return true;
 
   // Collect the set of scope domains relevant to the noalias scopes.
   SmallPtrSet<const MDNode *, 16> Domains;
   for (unsigned i = 0, ie = NoAlias->getNumOperands(); i != ie; ++i)
     if (const MDNode *NAMD = dyn_cast<MDNode>(NoAlias->getOperand(i)))
       if (const MDNode *Domain = AliasScopeNode(NAMD).getDomain())
for (const MDNode *Domain : Domains) {
 
     if (FoundAll)
       return false;
   }
 
   return true;
 }
 
-AliasResult ScopedNoAliasAA::alias(const MemoryLocation &LocA,
-                                   const MemoryLocation &LocB) {
-  if (!EnableScopedNoAlias)
-    return AliasAnalysis::alias(LocA, LocB);
+ScopedNoAliasAAResult ScopedNoAliasAA::run(Function &F,
+                                           AnalysisManager<Function> *AM) {
+  return ScopedNoAliasAAResult(AM->getResult<TargetLibraryAnalysis>(F));
+}
 
-  // Get the attached MDNodes.
-  const MDNode *AScopes = LocA.AATags.Scope, *BScopes = LocB.AATags.Scope;
+char ScopedNoAliasAA::PassID;
 
-  const MDNode *ANoAlias = LocA.AATags.NoAlias, *BNoAlias = LocB.AATags.NoAlias;
+char ScopedNoAliasAAWrapperPass::ID = 0;
+INITIALIZE_PASS_BEGIN(ScopedNoAliasAAWrapperPass, "scoped-noalias",
+                      "Scoped NoAlias Alias Analysis", false, true)
+INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
+INITIALIZE_PASS_END(ScopedNoAliasAAWrapperPass, "scoped-noalias",
+                    "Scoped NoAlias Alias Analysis", false, true)
 
-  if (!mayAliasInScopes(AScopes, BNoAlias))
-    return NoAlias;
-
-  if (!mayAliasInScopes(BScopes, ANoAlias))
-    return NoAlias;
-
-  // If they may alias, chain to the next AliasAnalysis.
-  return AliasAnalysis::alias(LocA, LocB);
+ImmutablePass *llvm::createScopedNoAliasAAWrapperPass() {
+  return new ScopedNoAliasAAWrapperPass();
 }
 
-bool ScopedNoAliasAA::pointsToConstantMemory(const MemoryLocation &Loc,
-                                             bool OrLocal) {
-  return AliasAnalysis::pointsToConstantMemory(Loc, OrLocal);
+ScopedNoAliasAAWrapperPass::ScopedNoAliasAAWrapperPass() : ImmutablePass(ID) {
+  initializeScopedNoAliasAAWrapperPassPass(*PassRegistry::getPassRegistry());
 }
 
-FunctionModRefBehavior
-ScopedNoAliasAA::getModRefBehavior(ImmutableCallSite CS) {
-  return AliasAnalysis::getModRefBehavior(CS);
-}
-
-FunctionModRefBehavior ScopedNoAliasAA::getModRefBehavior(const Function *F) {
-  return AliasAnalysis::getModRefBehavior(F);
+bool ScopedNoAliasAAWrapperPass::doInitialization(Module &M) {
+  Result.reset(new ScopedNoAliasAAResult(
+      getAnalysis<TargetLibraryInfoWrapperPass>().getTLI()));
+  return false;
 }
 
-ModRefInfo ScopedNoAliasAA::getModRefInfo(ImmutableCallSite CS,
-                                          const MemoryLocation &Loc) {
-  if (!EnableScopedNoAlias)
-    return AliasAnalysis::getModRefInfo(CS, Loc);
-
-  if (!mayAliasInScopes(Loc.AATags.Scope, CS.getInstruction()->getMetadata(
-                                              LLVMContext::MD_noalias)))
-    return MRI_NoModRef;
-
-  if (!mayAliasInScopes(
-          CS.getInstruction()->getMetadata(LLVMContext::MD_alias_scope),
-          Loc.AATags.NoAlias))
-    return MRI_NoModRef;
-
-  return AliasAnalysis::getModRefInfo(CS, Loc);
+bool ScopedNoAliasAAWrapperPass::doFinalization(Module &M) {
+  Result.reset();
+  return false;
 }
 
-ModRefInfo ScopedNoAliasAA::getModRefInfo(ImmutableCallSite CS1,
-                                          ImmutableCallSite CS2) {
-  if (!EnableScopedNoAlias)
-    return AliasAnalysis::getModRefInfo(CS1, CS2);
-
-  if (!mayAliasInScopes(
-          CS1.getInstruction()->getMetadata(LLVMContext::MD_alias_scope),
-          CS2.getInstruction()->getMetadata(LLVMContext::MD_noalias)))
-    return MRI_NoModRef;
-
-  if (!mayAliasInScopes(
-          CS2.getInstruction()->getMetadata(LLVMContext::MD_alias_scope),
-          CS1.getInstruction()->getMetadata(LLVMContext::MD_noalias)))
-    return MRI_NoModRef;
-
-  return AliasAnalysis::getModRefInfo(CS1, CS2);
+void ScopedNoAliasAAWrapperPass::getAnalysisUsage(AnalysisUsage &AU) const {
+  AU.setPreservesAll();
+  AU.addRequired<TargetLibraryInfoWrapperPass>();
 }
-

llvm/trunk/lib/Analysis/TypeBasedAliasAnalysis.cpp

 // Struct X has a double member, so the store to *x can alias the store to *p.
 // Currently it's not possible to precisely describe all the things struct X
 // aliases, so struct assignments must use conservative TBAA nodes. There's
 // no scheme for attaching metadata to @llvm.memcpy yet either.
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Analysis/TypeBasedAliasAnalysis.h"
+#include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/ADT/SetVector.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/Module.h"
 #include "llvm/Support/CommandLine.h"
 using namespace llvm;
 
 // A handy option for disabling TBAA functionality. The same effect can also be
TBAAStructTypeNode getParent(uint64_t &Offset) const {
     MDNode *P = dyn_cast_or_null<MDNode>(Node->getOperand(TheIdx));
     if (!P)
       return TBAAStructTypeNode();
     return TBAAStructTypeNode(P);
   }
 };
 }
 
-// Register this pass...
-char TypeBasedAliasAnalysis::ID = 0;
-INITIALIZE_AG_PASS(TypeBasedAliasAnalysis, AliasAnalysis, "tbaa",
-                   "Type-Based Alias Analysis", false, true, false)
-
-ImmutablePass *llvm::createTypeBasedAliasAnalysisPass() {
-  return new TypeBasedAliasAnalysis();
-}
-
-bool TypeBasedAliasAnalysis::doInitialization(Module &M) {
-  InitializeAliasAnalysis(this, &M.getDataLayout());
-  return true;
-}
-
-void TypeBasedAliasAnalysis::getAnalysisUsage(AnalysisUsage &AU) const {
-  AU.setPreservesAll();
-  AliasAnalysis::getAnalysisUsage(AU);
-}
-
 /// Check the first operand of the tbaa tag node, if it is a MDNode, we treat
 /// it as struct-path aware TBAA format, otherwise, we treat it as scalar TBAA
 /// format.
 static bool isStructPathTBAA(const MDNode *MD) {
   // Anonymous TBAA root starts with a MDNode and dragonegg uses it as
   // a TBAA tag.
   return isa<MDNode>(MD->getOperand(0)) && MD->getNumOperands() >= 3;
 }
 
-/// Aliases - Test whether the type represented by A may alias the
-/// type represented by B.
-bool TypeBasedAliasAnalysis::Aliases(const MDNode *A, const MDNode *B) const {
-  // Make sure that both MDNodes are struct-path aware.
-  if (isStructPathTBAA(A) && isStructPathTBAA(B))
-    return PathAliases(A, B);
-
-  // Keep track of the root node for A and B.
-  TBAANode RootA, RootB;
-
-  // Climb the tree from A to see if we reach B.
-  for (TBAANode T(A);;) {
-    if (T.getNode() == B)
-      // B is an ancestor of A.
-      return true;
-
-    RootA = T;
-    T = T.getParent();
-    if (!T.getNode())
-      break;
-  }
-
-  // Climb the tree from B to see if we reach A.
-  for (TBAANode T(B);;) {
-    if (T.getNode() == A)
-      // A is an ancestor of B.
-      return true;
-
-    RootB = T;
-    T = T.getParent();
-    if (!T.getNode())
-      break;
-  }
-
-  // Neither node is an ancestor of the other.
-
-  // If they have different roots, they're part of different potentially
-  // unrelated type systems, so we must be conservative.
-  if (RootA.getNode() != RootB.getNode())
-    return true;
-
-  // If they have the same root, then we've proved there's no alias.
-  return false;
-}
-
-/// Test whether the struct-path tag represented by A may alias the
-/// struct-path tag represented by B.
-bool TypeBasedAliasAnalysis::PathAliases(const MDNode *A,
-                                         const MDNode *B) const {
-  // Verify that both input nodes are struct-path aware.
-  assert(isStructPathTBAA(A) && "MDNode A is not struct-path aware.");
-  assert(isStructPathTBAA(B) && "MDNode B is not struct-path aware.");
-
-  // Keep track of the root node for A and B.
-  TBAAStructTypeNode RootA, RootB;
-  TBAAStructTagNode TagA(A), TagB(B);
-
-  // TODO: We need to check if AccessType of TagA encloses AccessType of
-  // TagB to support aggregate AccessType. If yes, return true.
-
-  // Start from the base type of A, follow the edge with the correct offset in
-  // the type DAG and adjust the offset until we reach the base type of B or
-  // until we reach the Root node.
-  // Compare the adjusted offset once we have the same base.
-
-  // Climb the type DAG from base type of A to see if we reach base type of B.
-  const MDNode *BaseA = TagA.getBaseType();
-  const MDNode *BaseB = TagB.getBaseType();
-  uint64_t OffsetA = TagA.getOffset(), OffsetB = TagB.getOffset();
-  for (TBAAStructTypeNode T(BaseA);;) {
-    if (T.getNode() == BaseB)
-      // Base type of A encloses base type of B, check if the offsets match.
-      return OffsetA == OffsetB;
-
-    RootA = T;
-    // Follow the edge with the correct offset, OffsetA will be adjusted to
-    // be relative to the field type.
-    T = T.getParent(OffsetA);
-    if (!T.getNode())
-      break;
-  }
-
-  // Reset OffsetA and climb the type DAG from base type of B to see if we reach
-  // base type of A.
-  OffsetA = TagA.getOffset();
-  for (TBAAStructTypeNode T(BaseB);;) {
-    if (T.getNode() == BaseA)
-      // Base type of B encloses base type of A, check if the offsets match.
-      return OffsetA == OffsetB;
-
-    RootB = T;
-    // Follow the edge with the correct offset, OffsetB will be adjusted to
-    // be relative to the field type.
-    T = T.getParent(OffsetB);
-    if (!T.getNode())
-      break;
-  }
-
-  // Neither node is an ancestor of the other.
-
-  // If they have different roots, they're part of different potentially
-  // unrelated type systems, so we must be conservative.
-  if (RootA.getNode() != RootB.getNode())
-    return true;
-
-  // If they have the same root, then we've proved there's no alias.
-  return false;
-}
-
-AliasResult TypeBasedAliasAnalysis::alias(const MemoryLocation &LocA,
-                                          const MemoryLocation &LocB) {
+AliasResult TypeBasedAAResult::alias(const MemoryLocation &LocA,
   if (!EnableTBAA)
-    return AliasAnalysis::alias(LocA, LocB);
+    return AAResultBase::alias(LocA, LocB);
 
   // Get the attached MDNodes. If either value lacks a tbaa MDNode, we must
   // be conservative.
   const MDNode *AM = LocA.AATags.TBAA;
   if (!AM)
-    return AliasAnalysis::alias(LocA, LocB);
+    return AAResultBase::alias(LocA, LocB);
   const MDNode *BM = LocB.AATags.TBAA;
   if (!BM)
-    return AliasAnalysis::alias(LocA, LocB);
+    return AAResultBase::alias(LocA, LocB);
 
   // If they may alias, chain to the next AliasAnalysis.
   if (Aliases(AM, BM))
-    return AliasAnalysis::alias(LocA, LocB);
+    return AAResultBase::alias(LocA, LocB);
 
   // Otherwise return a definitive result.
   return NoAlias;
 }
 
-bool TypeBasedAliasAnalysis::pointsToConstantMemory(const MemoryLocation &Loc,
-                                                    bool OrLocal) {
+bool TypeBasedAAResult::pointsToConstantMemory(const MemoryLocation &Loc,
   if (!EnableTBAA)
-    return AliasAnalysis::pointsToConstantMemory(Loc, OrLocal);
+    return AAResultBase::pointsToConstantMemory(Loc, OrLocal);
 
   const MDNode *M = Loc.AATags.TBAA;
   if (!M)
-    return AliasAnalysis::pointsToConstantMemory(Loc, OrLocal);
+    return AAResultBase::pointsToConstantMemory(Loc, OrLocal);
 
   // If this is an "immutable" type, we can assume the pointer is pointing
   // to constant memory.
   if ((!isStructPathTBAA(M) && TBAANode(M).TypeIsImmutable()) ||
       (isStructPathTBAA(M) && TBAAStructTagNode(M).TypeIsImmutable()))
     return true;
 
-  return AliasAnalysis::pointsToConstantMemory(Loc, OrLocal);
+  return AAResultBase::pointsToConstantMemory(Loc, OrLocal);
 }
 
 FunctionModRefBehavior
-TypeBasedAliasAnalysis::getModRefBehavior(ImmutableCallSite CS) {
+TypeBasedAAResult::getModRefBehavior(ImmutableCallSite CS) {
   if (!EnableTBAA)
-    return AliasAnalysis::getModRefBehavior(CS);
+    return AAResultBase::getModRefBehavior(CS);
 
   FunctionModRefBehavior Min = FMRB_UnknownModRefBehavior;
 
   // If this is an "immutable" type, we can assume the call doesn't write
   // to memory.
   if (const MDNode *M = CS.getInstruction()->getMetadata(LLVMContext::MD_tbaa))
     if ((!isStructPathTBAA(M) && TBAANode(M).TypeIsImmutable()) ||
         (isStructPathTBAA(M) && TBAAStructTagNode(M).TypeIsImmutable()))
       Min = FMRB_OnlyReadsMemory;
 
-  return FunctionModRefBehavior(AliasAnalysis::getModRefBehavior(CS) & Min);
+  return FunctionModRefBehavior(AAResultBase::getModRefBehavior(CS) & Min);
 }
 
-FunctionModRefBehavior
-TypeBasedAliasAnalysis::getModRefBehavior(const Function *F) {
+FunctionModRefBehavior TypeBasedAAResult::getModRefBehavior(const Function *F) {
   // Functions don't have metadata. Just chain to the next implementation.
-  return AliasAnalysis::getModRefBehavior(F);
+  return AAResultBase::getModRefBehavior(F);
 }
 
-ModRefInfo TypeBasedAliasAnalysis::getModRefInfo(ImmutableCallSite CS,
-                                                 const MemoryLocation &Loc) {
+ModRefInfo TypeBasedAAResult::getModRefInfo(ImmutableCallSite CS,
   if (!EnableTBAA)
-    return AliasAnalysis::getModRefInfo(CS, Loc);
+    return AAResultBase::getModRefInfo(CS, Loc);
 
   if (const MDNode *L = Loc.AATags.TBAA)
     if (const MDNode *M =
             CS.getInstruction()->getMetadata(LLVMContext::MD_tbaa))
       if (!Aliases(L, M))
         return MRI_NoModRef;
 
-  return AliasAnalysis::getModRefInfo(CS, Loc);
+  return AAResultBase::getModRefInfo(CS, Loc);
 }
 
-ModRefInfo TypeBasedAliasAnalysis::getModRefInfo(ImmutableCallSite CS1,
-                                                 ImmutableCallSite CS2) {
+ModRefInfo TypeBasedAAResult::getModRefInfo(ImmutableCallSite CS1,
   if (!EnableTBAA)
-    return AliasAnalysis::getModRefInfo(CS1, CS2);
+    return AAResultBase::getModRefInfo(CS1, CS2);
 
   if (const MDNode *M1 =
           CS1.getInstruction()->getMetadata(LLVMContext::MD_tbaa))
     if (const MDNode *M2 =
             CS2.getInstruction()->getMetadata(LLVMContext::MD_tbaa))
       if (!Aliases(M1, M2))
         return MRI_NoModRef;
 
-  return AliasAnalysis::getModRefInfo(CS1, CS2);
+  return AAResultBase::getModRefInfo(CS1, CS2);
 }
 
 bool MDNode::isTBAAVtableAccess() const {
   if (!isStructPathTBAA(this)) {
     if (getNumOperands() < 1)
       return false;
     if (MDString *Tag1 = dyn_cast<MDString>(getOperand(0))) {
       if (Tag1->getString() == "vtable pointer")
void Instruction::getAAMetadata(AAMDNodes &N, bool Merge) const {
 
   if (Merge)
     N.NoAlias =
         MDNode::intersect(N.NoAlias, getMetadata(LLVMContext::MD_noalias));
   else
     N.NoAlias = getMetadata(LLVMContext::MD_noalias);
 }
 
+/// Aliases - Test whether the type represented by A may alias the
+/// type represented by B.
+bool TypeBasedAAResult::Aliases(const MDNode *A, const MDNode *B) const {
+  // Make sure that both MDNodes are struct-path aware.
+  if (isStructPathTBAA(A) && isStructPathTBAA(B))
+    return PathAliases(A, B);
+
+  // Keep track of the root node for A and B.
+  TBAANode RootA, RootB;
+
+  // Climb the tree from A to see if we reach B.
+  for (TBAANode T(A);;) {
+    if (T.getNode() == B)
+      // B is an ancestor of A.
+      return true;
+
+    RootA = T;
+    T = T.getParent();
+    if (!T.getNode())
+      break;
+  }
+
+  // Climb the tree from B to see if we reach A.
+  for (TBAANode T(B);;) {
+    if (T.getNode() == A)
+      // A is an ancestor of B.
+      return true;
+
+    RootB = T;
+    T = T.getParent();
+    if (!T.getNode())
+      break;
+  }
+
+  // Neither node is an ancestor of the other.
+
+  // If they have different roots, they're part of different potentially
+  // unrelated type systems, so we must be conservative.
+  if (RootA.getNode() != RootB.getNode())
+    return true;
+
+  // If they have the same root, then we've proved there's no alias.
+  return false;
+}
+
+/// Test whether the struct-path tag represented by A may alias the
+/// struct-path tag represented by B.
+bool TypeBasedAAResult::PathAliases(const MDNode *A, const MDNode *B) const {
+  // Verify that both input nodes are struct-path aware.
+  assert(isStructPathTBAA(A) && "MDNode A is not struct-path aware.");
+  assert(isStructPathTBAA(B) && "MDNode B is not struct-path aware.");
+
+  // Keep track of the root node for A and B.
+  TBAAStructTypeNode RootA, RootB;
+  TBAAStructTagNode TagA(A), TagB(B);
+
+  // TODO: We need to check if AccessType of TagA encloses AccessType of
+  // TagB to support aggregate AccessType. If yes, return true.
+
+  // Start from the base type of A, follow the edge with the correct offset in
+  // the type DAG and adjust the offset until we reach the base type of B or
+  // until we reach the Root node.
+  // Compare the adjusted offset once we have the same base.
+
+  // Climb the type DAG from base type of A to see if we reach base type of B.
+  const MDNode *BaseA = TagA.getBaseType();
+  const MDNode *BaseB = TagB.getBaseType();
+  uint64_t OffsetA = TagA.getOffset(), OffsetB = TagB.getOffset();
+  for (TBAAStructTypeNode T(BaseA);;) {
+    if (T.getNode() == BaseB)
+      // Base type of A encloses base type of B, check if the offsets match.
+      return OffsetA == OffsetB;
+
+    RootA = T;
+    // Follow the edge with the correct offset, OffsetA will be adjusted to
+    // be relative to the field type.
+    T = T.getParent(OffsetA);
+    if (!T.getNode())
+      break;
+  }
+
+  // Reset OffsetA and climb the type DAG from base type of B to see if we reach
+  // base type of A.
+  OffsetA = TagA.getOffset();
+  for (TBAAStructTypeNode T(BaseB);;) {
+    if (T.getNode() == BaseA)
+      // Base type of B encloses base type of A, check if the offsets match.
+      return OffsetA == OffsetB;
+
+    RootB = T;
+    // Follow the edge with the correct offset, OffsetB will be adjusted to
+    // be relative to the field type.
+    T = T.getParent(OffsetB);
+    if (!T.getNode())
+      break;
+  }
+
+  // Neither node is an ancestor of the other.
+
+  // If they have different roots, they're part of different potentially
+  // unrelated type systems, so we must be conservative.
+  if (RootA.getNode() != RootB.getNode())
+    return true;
+
+  // If they have the same root, then we've proved there's no alias.
+  return false;
+}
+
+TypeBasedAAResult TypeBasedAA::run(Function &F, AnalysisManager<Function> *AM) {
+  return TypeBasedAAResult(AM->getResult<TargetLibraryAnalysis>(F));
+}
+
+char TypeBasedAA::PassID;
+
+char TypeBasedAAWrapperPass::ID = 0;
+INITIALIZE_PASS_BEGIN(TypeBasedAAWrapperPass, "tbaa",
+                      "Type-Based Alias Analysis", false, true)
+INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
+INITIALIZE_PASS_END(TypeBasedAAWrapperPass, "tbaa", "Type-Based Alias Analysis",
+                    false, true)
+
+ImmutablePass *llvm::createTypeBasedAAWrapperPass() {
+  return new TypeBasedAAWrapperPass();
+}
+
+TypeBasedAAWrapperPass::TypeBasedAAWrapperPass() : ImmutablePass(ID) {
+  initializeTypeBasedAAWrapperPassPass(*PassRegistry::getPassRegistry());
+}
+
+bool TypeBasedAAWrapperPass::doInitialization(Module &M) {
+  Result.reset(new TypeBasedAAResult(
+      getAnalysis<TargetLibraryInfoWrapperPass>().getTLI()));
+  return false;
+}
+
+bool TypeBasedAAWrapperPass::doFinalization(Module &M) {
+  Result.reset();
+  return false;
+}
+
+void TypeBasedAAWrapperPass::getAnalysisUsage(AnalysisUsage &AU) const {
+  AU.setPreservesAll();
+  AU.addRequired<TargetLibraryInfoWrapperPass>();
+}

llvm/trunk/lib/CodeGen/InlineSpiller.cpp

private:
   SmallVector<MachineInstr*, 8> DeadDefs;
 
   ~InlineSpiller() override {}
 
 public:
   InlineSpiller(MachineFunctionPass &pass, MachineFunction &mf, VirtRegMap &vrm)
       : MF(mf), LIS(pass.getAnalysis<LiveIntervals>()),
         LSS(pass.getAnalysis<LiveStacks>()),
-        AA(&pass.getAnalysis<AliasAnalysis>()),
+        AA(&pass.getAnalysis<AAResultsWrapperPass>().getAAResults()),
         MDT(pass.getAnalysis<MachineDominatorTree>()),
         Loops(pass.getAnalysis<MachineLoopInfo>()), VRM(vrm),
         MFI(*mf.getFrameInfo()), MRI(mf.getRegInfo()),
         TII(*mf.getSubtarget().getInstrInfo()),
         TRI(*mf.getSubtarget().getRegisterInfo()),
         MBFI(pass.getAnalysis<MachineBlockFrequencyInfo>()) {}
 
   void spill(LiveRangeEdit &) override;

llvm/trunk/lib/CodeGen/LiveIntervalAnalysis.cpp

 using namespace llvm;
 
 #define DEBUG_TYPE "regalloc"
 
 char LiveIntervals::ID = 0;
 char &llvm::LiveIntervalsID = LiveIntervals::ID;
 INITIALIZE_PASS_BEGIN(LiveIntervals, "liveintervals",
                 "Live Interval Analysis", false, false)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(LiveVariables)
 INITIALIZE_PASS_DEPENDENCY(MachineDominatorTree)
 INITIALIZE_PASS_DEPENDENCY(SlotIndexes)
 INITIALIZE_PASS_END(LiveIntervals, "liveintervals",
                 "Live Interval Analysis", false, false)
 
 #ifndef NDEBUG
 static cl::opt<bool> EnablePrecomputePhysRegs(

 cl::opt<bool> UseSegmentSetForPhysRegs(
     "use-segment-set-for-physregs", cl::Hidden, cl::init(true),
     cl::desc(
         "Use segment set for the computation of the live ranges of physregs."));
 }
 
 void LiveIntervals::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.setPreservesCFG();
-  AU.addRequired<AliasAnalysis>();
-  AU.addPreserved<AliasAnalysis>();
+  AU.addRequired<AAResultsWrapperPass>();
+  AU.addPreserved<AAResultsWrapperPass>();
   // LiveVariables isn't really required by this analysis, it is only required
   // here to make sure it is live during TwoAddressInstructionPass and
   // PHIElimination. This is temporary.
   AU.addRequired<LiveVariables>();
   AU.addPreserved<LiveVariables>();
   AU.addPreservedID(MachineLoopInfoID);
   AU.addRequiredTransitiveID(MachineDominatorsID);
   AU.addPreservedID(MachineDominatorsID);

 
 /// runOnMachineFunction - calculates LiveIntervals
 ///
 bool LiveIntervals::runOnMachineFunction(MachineFunction &fn) {
   MF = &fn;
   MRI = &MF->getRegInfo();
   TRI = MF->getSubtarget().getRegisterInfo();
   TII = MF->getSubtarget().getInstrInfo();
-  AA = &getAnalysis<AliasAnalysis>();
+  AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
   Indexes = &getAnalysis<SlotIndexes>();
   DomTree = &getAnalysis<MachineDominatorTree>();
 
   if (EnableSubRegLiveness && MF->getSubtarget().enableSubRegLiveness())
     MRI->enableSubRegLiveness(true);
 
   if (!LRCalc)
     LRCalc = new LiveRangeCalc();

llvm/trunk/lib/CodeGen/MachineCSE.cpp

MachineCSE() : MachineFunctionPass(ID), LookAheadLimit(0), CurrVN(0) {
       initializeMachineCSEPass(*PassRegistry::getPassRegistry());
     }
 
     bool runOnMachineFunction(MachineFunction &MF) override;
 
     void getAnalysisUsage(AnalysisUsage &AU) const override {
       AU.setPreservesCFG();
       MachineFunctionPass::getAnalysisUsage(AU);
-      AU.addRequired<AliasAnalysis>();
+      AU.addRequired<AAResultsWrapperPass>();
       AU.addPreservedID(MachineLoopInfoID);
       AU.addRequired<MachineDominatorTree>();
       AU.addPreserved<MachineDominatorTree>();
     }
 
     void releaseMemory() override {
       ScopeMap.clear();
       Exps.clear();
namespace {
   };
 } // end anonymous namespace
 
 char MachineCSE::ID = 0;
 char &llvm::MachineCSEID = MachineCSE::ID;
 INITIALIZE_PASS_BEGIN(MachineCSE, "machine-cse",
                 "Machine Common Subexpression Elimination", false, false)
 INITIALIZE_PASS_DEPENDENCY(MachineDominatorTree)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_END(MachineCSE, "machine-cse",
                 "Machine Common Subexpression Elimination", false, false)
 
 /// The source register of a COPY machine instruction can be propagated to all
 /// its users, and this propagation could increase the probability of finding
 /// common subexpressions. If the COPY has only one user, the COPY itself can
 /// be removed.
 bool MachineCSE::PerformTrivialCopyPropagation(MachineInstr *MI,

 
 bool MachineCSE::runOnMachineFunction(MachineFunction &MF) {
   if (skipOptnoneFunction(*MF.getFunction()))
     return false;
 
   TII = MF.getSubtarget().getInstrInfo();
   TRI = MF.getSubtarget().getRegisterInfo();
   MRI = &MF.getRegInfo();
-  AA = &getAnalysis<AliasAnalysis>();
+  AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
   DT = &getAnalysis<MachineDominatorTree>();
   LookAheadLimit = TII->getMachineCSELookAheadLimit();
   return PerformCSE(DT->getRootNode());
 }

llvm/trunk/lib/CodeGen/MachineFunctionPass.cpp

 //===-- MachineFunctionPass.cpp -------------------------------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file contains the definitions of the MachineFunctionPass members.
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/CodeGen/MachineFunctionPass.h"
 #include "llvm/Analysis/AliasAnalysis.h"
+#include "llvm/Analysis/BasicAliasAnalysis.h"
 #include "llvm/Analysis/DominanceFrontier.h"
+#include "llvm/Analysis/GlobalsModRef.h"
 #include "llvm/Analysis/IVUsers.h"
 #include "llvm/Analysis/LoopInfo.h"
 #include "llvm/Analysis/MemoryDependenceAnalysis.h"
 #include "llvm/Analysis/ScalarEvolution.h"
+#include "llvm/Analysis/ScalarEvolutionAliasAnalysis.h"
 #include "llvm/CodeGen/MachineFunctionAnalysis.h"
 #include "llvm/CodeGen/Passes.h"
 #include "llvm/CodeGen/StackProtector.h"
 #include "llvm/IR/Dominators.h"
 #include "llvm/IR/Function.h"
 using namespace llvm;
 
 Pass *MachineFunctionPass::createPrinterPass(raw_ostream &O,
void MachineFunctionPass::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.addRequired<MachineFunctionAnalysis>();
   AU.addPreserved<MachineFunctionAnalysis>();
 
   // MachineFunctionPass preserves all LLVM IR passes, but there's no
   // high-level way to express this. Instead, just list a bunch of
   // passes explicitly. This does not include setPreservesCFG,
   // because CodeGen overloads that to mean preserving the MachineBasicBlock
   // CFG in addition to the LLVM IR CFG.
-  AU.addPreserved<AliasAnalysis>();
+  AU.addPreserved<BasicAAWrapperPass>();
   AU.addPreserved<DominanceFrontier>();
   AU.addPreserved<DominatorTreeWrapperPass>();
+  AU.addPreserved<AAResultsWrapperPass>();
+  AU.addPreserved<GlobalsAAWrapperPass>();
   AU.addPreserved<IVUsers>();
   AU.addPreserved<LoopInfoWrapperPass>();
   AU.addPreserved<MemoryDependenceAnalysis>();
   AU.addPreserved<ScalarEvolutionWrapperPass>();
+  AU.addPreserved<SCEVAAWrapperPass>();
   AU.addPreserved<StackProtector>();
 
   FunctionPass::getAnalysisUsage(AU);
 }

llvm/trunk/lib/CodeGen/MachineLICM.cpp

explicit MachineLICM(bool PreRA) :
         initializeMachineLICMPass(*PassRegistry::getPassRegistry());
       }
 
     bool runOnMachineFunction(MachineFunction &MF) override;
 
     void getAnalysisUsage(AnalysisUsage &AU) const override {
       AU.addRequired<MachineLoopInfo>();
       AU.addRequired<MachineDominatorTree>();
-      AU.addRequired<AliasAnalysis>();
+      AU.addRequired<AAResultsWrapperPass>();
       AU.addPreserved<MachineLoopInfo>();
       AU.addPreserved<MachineDominatorTree>();
       MachineFunctionPass::getAnalysisUsage(AU);
     }
 
     void releaseMemory() override {
       RegSeen.clear();
       RegPressure.clear();

 } // end anonymous namespace
 
 char MachineLICM::ID = 0;
 char &llvm::MachineLICMID = MachineLICM::ID;
 INITIALIZE_PASS_BEGIN(MachineLICM, "machinelicm",
                 "Machine Loop Invariant Code Motion", false, false)
 INITIALIZE_PASS_DEPENDENCY(MachineLoopInfo)
 INITIALIZE_PASS_DEPENDENCY(MachineDominatorTree)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_END(MachineLICM, "machinelicm",
                 "Machine Loop Invariant Code Motion", false, false)
 
 /// LoopIsOuterMostWithPredecessor - Test if the given loop is the outer-most
 /// loop that has a unique predecessor.
 static bool LoopIsOuterMostWithPredecessor(MachineLoop *CurLoop) {
   // Check whether this loop even has a unique predecessor.
   if (!CurLoop->getLoopPredecessor())
if (PreRegAlloc) {
     RegLimit.resize(NumRPS);
     for (unsigned i = 0, e = NumRPS; i != e; ++i)
       RegLimit[i] = TRI->getRegPressureSetLimit(MF, i);
   }
 
   // Get our Loop information...
   MLI = &getAnalysis<MachineLoopInfo>();
   DT  = &getAnalysis<MachineDominatorTree>();
-  AA  = &getAnalysis<AliasAnalysis>();
+  AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
 
   SmallVector<MachineLoop *, 8> Worklist(MLI->begin(), MLI->end());
   while (!Worklist.empty()) {
     CurLoop = Worklist.pop_back_val();
     CurPreheader = nullptr;
     ExitBlocks.clear();
 
     // If this is done before regalloc, only visit outer-most preheader-sporting

llvm/trunk/lib/CodeGen/MachineScheduler.cpp

 } // namespace
 
 char MachineScheduler::ID = 0;
 
 char &llvm::MachineSchedulerID = MachineScheduler::ID;
 
 INITIALIZE_PASS_BEGIN(MachineScheduler, "machine-scheduler",
                       "Machine Instruction Scheduler", false, false)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(SlotIndexes)
 INITIALIZE_PASS_DEPENDENCY(LiveIntervals)
 INITIALIZE_PASS_END(MachineScheduler, "machine-scheduler",
                     "Machine Instruction Scheduler", false, false)
 
 MachineScheduler::MachineScheduler()
 : MachineSchedulerBase(ID) {
   initializeMachineSchedulerPass(*PassRegistry::getPassRegistry());
 }
 
 void MachineScheduler::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.setPreservesCFG();
   AU.addRequiredID(MachineDominatorsID);
   AU.addRequired<MachineLoopInfo>();
-  AU.addRequired<AliasAnalysis>();
+  AU.addRequired<AAResultsWrapperPass>();
   AU.addRequired<TargetPassConfig>();
   AU.addRequired<SlotIndexes>();
   AU.addPreserved<SlotIndexes>();
   AU.addRequired<LiveIntervals>();
   AU.addPreserved<LiveIntervals>();
   MachineFunctionPass::getAnalysisUsage(AU);
 }
 
bool MachineScheduler::runOnMachineFunction(MachineFunction &mf) {
 
   DEBUG(dbgs() << "Before MISsched:\n"; mf.print(dbgs()));
 
   // Initialize the context of the pass.
   MF = &mf;
   MLI = &getAnalysis<MachineLoopInfo>();
   MDT = &getAnalysis<MachineDominatorTree>();
   PassConfig = &getAnalysis<TargetPassConfig>();
-  AA = &getAnalysis<AliasAnalysis>();
+  AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
 
   LIS = &getAnalysis<LiveIntervals>();
 
   if (VerifyScheduling) {
     DEBUG(LIS->dump());
     MF->verify(this, "Before machine scheduling.");
   }
   RegClassInfo->runOnMachineFunction(*MF);

llvm/trunk/lib/CodeGen/MachineSink.cpp

MachineSinking() : MachineFunctionPass(ID) {
       initializeMachineSinkingPass(*PassRegistry::getPassRegistry());
     }
 
     bool runOnMachineFunction(MachineFunction &MF) override;
 
     void getAnalysisUsage(AnalysisUsage &AU) const override {
       AU.setPreservesCFG();
       MachineFunctionPass::getAnalysisUsage(AU);
-      AU.addRequired<AliasAnalysis>();
+      AU.addRequired<AAResultsWrapperPass>();
       AU.addRequired<MachineDominatorTree>();
       AU.addRequired<MachinePostDominatorTree>();
       AU.addRequired<MachineLoopInfo>();
       AU.addPreserved<MachineDominatorTree>();
       AU.addPreserved<MachinePostDominatorTree>();
       AU.addPreserved<MachineLoopInfo>();
       if (UseBlockFreqInfo)
         AU.addRequired<MachineBlockFrequencyInfo>();

 } // end anonymous namespace
 
 char MachineSinking::ID = 0;
 char &llvm::MachineSinkingID = MachineSinking::ID;
 INITIALIZE_PASS_BEGIN(MachineSinking, "machine-sink",
                 "Machine code sinking", false, false)
 INITIALIZE_PASS_DEPENDENCY(MachineDominatorTree)
 INITIALIZE_PASS_DEPENDENCY(MachineLoopInfo)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_END(MachineSinking, "machine-sink",
                 "Machine code sinking", false, false)
 
 bool MachineSinking::PerformTrivialForwardCoalescing(MachineInstr *MI,
                                                      MachineBasicBlock *MBB) {
   if (!MI->isCopy())
     return false;
 
bool MachineSinking::runOnMachineFunction(MachineFunction &MF) {
 
   TII = MF.getSubtarget().getInstrInfo();
   TRI = MF.getSubtarget().getRegisterInfo();
   MRI = &MF.getRegInfo();
   DT = &getAnalysis<MachineDominatorTree>();
   PDT = &getAnalysis<MachinePostDominatorTree>();
   LI = &getAnalysis<MachineLoopInfo>();
   MBFI = UseBlockFreqInfo ? &getAnalysis<MachineBlockFrequencyInfo>() : nullptr;
-  AA = &getAnalysis<AliasAnalysis>();
+  AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
 
   bool EverMadeChange = false;
 
   while (1) {
     bool MadeChange = false;
 
     // Process all basic blocks.
     CEBCandidates.clear();

llvm/trunk/lib/CodeGen/Passes.cpp

: ImmutablePass(ID), PM(&pm), StartBefore(nullptr), StartAfter(nullptr),
       DisableVerify(false), EnableTailMerge(true) { 
 
   Impl = new PassConfigImpl();
 
   // Register all target independent codegen passes to activate their PassIDs,
   // including this pass itself.
   initializeCodeGen(*PassRegistry::getPassRegistry());
 
+  // Also register alias analysis passes required by codegen passes.
+  initializeBasicAAWrapperPassPass(*PassRegistry::getPassRegistry());
+  initializeAAResultsWrapperPassPass(*PassRegistry::getPassRegistry());
+
   // Substitute Pseudo Pass IDs for real ones.
   substitutePass(&EarlyTailDuplicateID, &TailDuplicateID);
   substitutePass(&PostRAMachineLICMID, &MachineLICMID);
 }
 
 /// Insert InsertedPassID pass after TargetPassID.
 void TargetPassConfig::insertPass(AnalysisID TargetPassID,
                                   IdentifyingPassPtr InsertedPassID) {

 /// Add common target configurable passes that perform LLVM IR to IR transforms
 /// following machine independent optimization.
 void TargetPassConfig::addIRPasses() {
   // Basic AliasAnalysis support.
   // Add TypeBasedAliasAnalysis before BasicAliasAnalysis so that
   // BasicAliasAnalysis wins if they disagree. This is intended to help
   // support "obvious" type-punning idioms.
   if (UseCFLAA)
-    addPass(createCFLAliasAnalysisPass());
-  addPass(createTypeBasedAliasAnalysisPass());
-  addPass(createScopedNoAliasAAPass());
-  addPass(createBasicAliasAnalysisPass());
+    addPass(createCFLAAWrapperPass());
+  addPass(createTypeBasedAAWrapperPass());
+  addPass(createScopedNoAliasAAWrapperPass());
+  addPass(createBasicAAWrapperPass());
 
   // Before running any passes, run the verifier to determine if the input
   // coming from the front-end and/or optimizer is valid.
   if (!DisableVerify)
     addPass(createVerifierPass());
 
   // Run loop strength reduction before anything else.
   if (getOptLevel() != CodeGenOpt::None && !DisableLSR) {

llvm/trunk/lib/CodeGen/PostRASchedulerList.cpp

class PostRAScheduler : public MachineFunctionPass {
     RegisterClassInfo RegClassInfo;
 
   public:
     static char ID;
     PostRAScheduler() : MachineFunctionPass(ID) {}
 
     void getAnalysisUsage(AnalysisUsage &AU) const override {
       AU.setPreservesCFG();
-      AU.addRequired<AliasAnalysis>();
+      AU.addRequired<AAResultsWrapperPass>();
       AU.addRequired<TargetPassConfig>();
       AU.addRequired<MachineDominatorTree>();
       AU.addPreserved<MachineDominatorTree>();
       AU.addRequired<MachineLoopInfo>();
       AU.addPreserved<MachineLoopInfo>();
       MachineFunctionPass::getAnalysisUsage(AU);
     }
 

 }
 
 bool PostRAScheduler::runOnMachineFunction(MachineFunction &Fn) {
   if (skipOptnoneFunction(*Fn.getFunction()))
     return false;
 
   TII = Fn.getSubtarget().getInstrInfo();
   MachineLoopInfo &MLI = getAnalysis<MachineLoopInfo>();
-  AliasAnalysis *AA = &getAnalysis<AliasAnalysis>();
+  AliasAnalysis *AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
   TargetPassConfig *PassConfig = &getAnalysis<TargetPassConfig>();
 
   RegClassInfo.runOnMachineFunction(Fn);
 
   // Check for explicit enable/disable of post-ra scheduling.
   TargetSubtargetInfo::AntiDepBreakMode AntiDepMode =
     TargetSubtargetInfo::ANTIDEP_NONE;
   SmallVector<const TargetRegisterClass*, 4> CriticalPathRCs;

llvm/trunk/lib/CodeGen/ProcessImplicitDefs.cpp

 
 INITIALIZE_PASS_BEGIN(ProcessImplicitDefs, "processimpdefs",
                 "Process Implicit Definitions", false, false)
 INITIALIZE_PASS_END(ProcessImplicitDefs, "processimpdefs",
                 "Process Implicit Definitions", false, false)
 
 void ProcessImplicitDefs::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.setPreservesCFG();
-  AU.addPreserved<AliasAnalysis>();
+  AU.addPreserved<AAResultsWrapperPass>();
   MachineFunctionPass::getAnalysisUsage(AU);
 }
 
 bool ProcessImplicitDefs::canTurnIntoImplicitDef(MachineInstr *MI) {
   if (!MI->isCopyLike() &&
       !MI->isInsertSubreg() &&
       !MI->isRegSequence() &&
       !MI->isPHI())

llvm/trunk/lib/CodeGen/RegAllocBasic.cpp

RABasic::RABasic(): MachineFunctionPass(ID) {
   initializeMachineDominatorTreePass(*PassRegistry::getPassRegistry());
   initializeMachineLoopInfoPass(*PassRegistry::getPassRegistry());
   initializeVirtRegMapPass(*PassRegistry::getPassRegistry());
   initializeLiveRegMatrixPass(*PassRegistry::getPassRegistry());
 }
 
 void RABasic::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.setPreservesCFG();
-  AU.addRequired<AliasAnalysis>();
-  AU.addPreserved<AliasAnalysis>();
+  AU.addRequired<AAResultsWrapperPass>();
+  AU.addPreserved<AAResultsWrapperPass>();
   AU.addRequired<LiveIntervals>();
   AU.addPreserved<LiveIntervals>();
   AU.addPreserved<SlotIndexes>();
   AU.addRequired<LiveDebugVariables>();
   AU.addPreserved<LiveDebugVariables>();
   AU.addRequired<LiveStacks>();
   AU.addPreserved<LiveStacks>();
   AU.addRequired<MachineBlockFrequencyInfo>();

llvm/trunk/lib/CodeGen/RegAllocGreedy.cpp

RAGreedy::RAGreedy(): MachineFunctionPass(ID) {
   initializeEdgeBundlesPass(*PassRegistry::getPassRegistry());
   initializeSpillPlacementPass(*PassRegistry::getPassRegistry());
 }
 
 void RAGreedy::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.setPreservesCFG();
   AU.addRequired<MachineBlockFrequencyInfo>();
   AU.addPreserved<MachineBlockFrequencyInfo>();
-  AU.addRequired<AliasAnalysis>();
-  AU.addPreserved<AliasAnalysis>();
+  AU.addRequired<AAResultsWrapperPass>();
+  AU.addPreserved<AAResultsWrapperPass>();
   AU.addRequired<LiveIntervals>();
   AU.addPreserved<LiveIntervals>();
   AU.addRequired<SlotIndexes>();
   AU.addPreserved<SlotIndexes>();
   AU.addRequired<LiveDebugVariables>();
   AU.addPreserved<LiveDebugVariables>();
   AU.addRequired<LiveStacks>();
   AU.addPreserved<LiveStacks>();

llvm/trunk/lib/CodeGen/RegAllocPBQP.cpp

 
 // Out-of-line destructor/anchor for PBQPRAConstraint.
 PBQPRAConstraint::~PBQPRAConstraint() {}
 void PBQPRAConstraint::anchor() {}
 void PBQPRAConstraintList::anchor() {}
 
 void RegAllocPBQP::getAnalysisUsage(AnalysisUsage &au) const {
   au.setPreservesCFG();
-  au.addRequired<AliasAnalysis>();
-  au.addPreserved<AliasAnalysis>();
+  au.addRequired<AAResultsWrapperPass>();
+  au.addPreserved<AAResultsWrapperPass>();
   au.addRequired<SlotIndexes>();
   au.addPreserved<SlotIndexes>();
   au.addRequired<LiveIntervals>();
   au.addPreserved<LiveIntervals>();
   //au.addRequiredID(SplitCriticalEdgesID);
   if (customPassID)
     au.addRequiredID(*customPassID);
   au.addRequired<LiveStacks>();

llvm/trunk/lib/CodeGen/RegisterCoalescer.cpp

 
 char &llvm::RegisterCoalescerID = RegisterCoalescer::ID;
 
 INITIALIZE_PASS_BEGIN(RegisterCoalescer, "simple-register-coalescing",
                       "Simple Register Coalescing", false, false)
 INITIALIZE_PASS_DEPENDENCY(LiveIntervals)
 INITIALIZE_PASS_DEPENDENCY(SlotIndexes)
 INITIALIZE_PASS_DEPENDENCY(MachineLoopInfo)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_END(RegisterCoalescer, "simple-register-coalescing",
                     "Simple Register Coalescing", false, false)
 
 char RegisterCoalescer::ID = 0;
 
 static bool isMoveInstr(const TargetRegisterInfo &tri, const MachineInstr *MI,
                         unsigned &Src, unsigned &Dst,
                         unsigned &SrcSub, unsigned &DstSub) {
if (TargetRegisterInfo::isPhysicalRegister(DstReg)) {
     // Registers match, do the subregisters line up?
     return TRI.composeSubRegIndices(SrcIdx, SrcSub) ==
            TRI.composeSubRegIndices(DstIdx, DstSub);
   }
 }
 
 void RegisterCoalescer::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.setPreservesCFG();
-  AU.addRequired<AliasAnalysis>();
+  AU.addRequired<AAResultsWrapperPass>();
   AU.addRequired<LiveIntervals>();
   AU.addPreserved<LiveIntervals>();
   AU.addPreserved<SlotIndexes>();
   AU.addRequired<MachineLoopInfo>();
   AU.addPreserved<MachineLoopInfo>();
   AU.addPreservedID(MachineDominatorsID);
   MachineFunctionPass::getAnalysisUsage(AU);
 }

 bool RegisterCoalescer::runOnMachineFunction(MachineFunction &fn) {
   MF = &fn;
   MRI = &fn.getRegInfo();
   TM = &fn.getTarget();
   const TargetSubtargetInfo &STI = fn.getSubtarget();
   TRI = STI.getRegisterInfo();
   TII = STI.getInstrInfo();
   LIS = &getAnalysis<LiveIntervals>();
-  AA = &getAnalysis<AliasAnalysis>();
+  AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
   Loops = &getAnalysis<MachineLoopInfo>();
   if (EnableGlobalCopies == cl::BOU_UNSET)
     JoinGlobalCopies = STI.enableJoinGlobalCopies();
   else
     JoinGlobalCopies = (EnableGlobalCopies == cl::BOU_TRUE);
 
   // The MachineScheduler does not currently require JoinSplitEdges. This will
   // either be enabled unconditionally or replaced by a more general live range

llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h

 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_LIB_CODEGEN_SELECTIONDAG_SELECTIONDAGBUILDER_H
 #define LLVM_LIB_CODEGEN_SELECTIONDAG_SELECTIONDAGBUILDER_H
 
 #include "StatepointLowering.h"
 #include "llvm/ADT/APInt.h"
 #include "llvm/ADT/DenseMap.h"
+#include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/CodeGen/Analysis.h"
 #include "llvm/CodeGen/SelectionDAG.h"
 #include "llvm/CodeGen/SelectionDAGNodes.h"
 #include "llvm/IR/CallSite.h"
 #include "llvm/IR/Statepoint.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Target/TargetLowering.h"
 #include <vector>
 
 namespace llvm {
 
 class AddrSpaceCastInst;
-class AliasAnalysis;
 class AllocaInst;
 class BasicBlock;
 class BitCastInst;
 class BranchInst;
 class CallInst;
 class DbgValueInst;
 class ExtractElementInst;
 class ExtractValueInst;

llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp

SelectionDAGISel::SelectionDAGISel(TargetMachine &tm,
   MachineFunctionPass(ID), TM(tm),
   FuncInfo(new FunctionLoweringInfo()),
   CurDAG(new SelectionDAG(tm, OL)),
   SDB(new SelectionDAGBuilder(*CurDAG, *FuncInfo, OL)),
   GFI(),
   OptLevel(OL),
   DAGSize(0) {
     initializeGCModuleInfoPass(*PassRegistry::getPassRegistry());
-    initializeAliasAnalysisAnalysisGroup(*PassRegistry::getPassRegistry());
     initializeBranchProbabilityInfoWrapperPassPass(
         *PassRegistry::getPassRegistry());
+    initializeAAResultsWrapperPassPass(*PassRegistry::getPassRegistry());
     initializeTargetLibraryInfoWrapperPassPass(
         *PassRegistry::getPassRegistry());
   }
 
 SelectionDAGISel::~SelectionDAGISel() {
   delete SDB;
   delete CurDAG;
   delete FuncInfo;
 }
 
 void SelectionDAGISel::getAnalysisUsage(AnalysisUsage &AU) const {
-  AU.addRequired<AliasAnalysis>();
-  AU.addPreserved<AliasAnalysis>();
+  AU.addRequired<AAResultsWrapperPass>();
   AU.addRequired<GCModuleInfo>();
   AU.addPreserved<GCModuleInfo>();
   AU.addRequired<TargetLibraryInfoWrapperPass>();
   if (UseMBPI && OptLevel != CodeGenOpt::None)
     AU.addRequired<BranchProbabilityInfoWrapperPass>();
   MachineFunctionPass::getAnalysisUsage(AU);
 }
 
bool SelectionDAGISel::runOnMachineFunction(MachineFunction &mf) {
   CodeGenOpt::Level NewOptLevel = OptLevel;
   if (Fn.hasFnAttribute(Attribute::OptimizeNone))
     NewOptLevel = CodeGenOpt::None;
   OptLevelChanger OLC(*this, NewOptLevel);
 
   TII = MF->getSubtarget().getInstrInfo();
   TLI = MF->getSubtarget().getTargetLowering();
   RegInfo = &MF->getRegInfo();
-  AA = &getAnalysis<AliasAnalysis>();
+  AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
   LibInfo = &getAnalysis<TargetLibraryInfoWrapperPass>().getTLI();
   GFI = Fn.hasGC() ? &getAnalysis<GCModuleInfo>().getFunctionInfo(Fn) : nullptr;
 
   DEBUG(dbgs() << "\n\n\n=== " << Fn.getName() << "\n");
 
   SplitCriticalSideEffectEdges(const_cast<Function &>(Fn));
 
   CurDAG->init(*MF);

llvm/trunk/lib/CodeGen/TwoAddressInstructionPass.cpp

 public:
   static char ID; // Pass identification, replacement for typeid
   TwoAddressInstructionPass() : MachineFunctionPass(ID) {
     initializeTwoAddressInstructionPassPass(*PassRegistry::getPassRegistry());
   }
 
   void getAnalysisUsage(AnalysisUsage &AU) const override {
     AU.setPreservesCFG();
-    AU.addRequired<AliasAnalysis>();
+    AU.addRequired<AAResultsWrapperPass>();
     AU.addPreserved<LiveVariables>();
     AU.addPreserved<SlotIndexes>();
     AU.addPreserved<LiveIntervals>();
     AU.addPreservedID(MachineLoopInfoID);
     AU.addPreservedID(MachineDominatorsID);
     MachineFunctionPass::getAnalysisUsage(AU);
   }
 
   /// runOnMachineFunction - Pass entry point.
   bool runOnMachineFunction(MachineFunction&) override;
 };
 } // end anonymous namespace
 
 char TwoAddressInstructionPass::ID = 0;
 INITIALIZE_PASS_BEGIN(TwoAddressInstructionPass, "twoaddressinstruction",
                 "Two-Address instruction pass", false, false)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_END(TwoAddressInstructionPass, "twoaddressinstruction",
                 "Two-Address instruction pass", false, false)
 
 char &llvm::TwoAddressInstructionPassID = TwoAddressInstructionPass::ID;
 
 static bool isPlainlyKilled(MachineInstr *MI, unsigned Reg, LiveIntervals *LIS);
 
 /// sink3AddrInstruction - A two-address instruction has been converted to a
bool TwoAddressInstructionPass::runOnMachineFunction(MachineFunction &Func) {
   MF = &Func;
   const TargetMachine &TM = MF->getTarget();
   MRI = &MF->getRegInfo();
   TII = MF->getSubtarget().getInstrInfo();
   TRI = MF->getSubtarget().getRegisterInfo();
   InstrItins = MF->getSubtarget().getInstrItineraryData();
   LV = getAnalysisIfAvailable<LiveVariables>();
   LIS = getAnalysisIfAvailable<LiveIntervals>();
-  AA = &getAnalysis<AliasAnalysis>();
+  AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
   OptLevel = TM.getOptLevel();
 
   bool MadeChange = false;
 
   DEBUG(dbgs() << "********** REWRITING TWO-ADDR INSTRS **********\n");
   DEBUG(dbgs() << "********** Function: "
         << MF->getName() << '\n');
 

llvm/trunk/lib/LTO/LTOCodeGenerator.cpp

void LTOCodeGenerator::initializeLTOPasses() {
   initializePruneEHPass(R);
   initializeGlobalDCEPass(R);
   initializeArgPromotionPass(R);
   initializeJumpThreadingPass(R);
   initializeSROAPass(R);
   initializeSROA_DTPass(R);
   initializeSROA_SSAUpPass(R);
   initializeFunctionAttrsPass(R);
-  initializeGlobalsModRefPass(R);
+  initializeGlobalsAAWrapperPassPass(R);
   initializeLICMPass(R);
   initializeMergedLoadStoreMotionPass(R);
   initializeGVNPass(R);
   initializeMemCpyOptPass(R);
   initializeDCEPass(R);
   initializeCFGSimplifyPassPass(R);
 }
 

llvm/trunk/lib/Target/Hexagon/HexagonVLIWPacketizer.cpp

namespace {
   };
 }
 
 INITIALIZE_PASS_BEGIN(HexagonPacketizer, "packets", "Hexagon Packetizer",
                       false, false)
 INITIALIZE_PASS_DEPENDENCY(MachineDominatorTree)
 INITIALIZE_PASS_DEPENDENCY(MachineBranchProbabilityInfo)
 INITIALIZE_PASS_DEPENDENCY(MachineLoopInfo)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_END(HexagonPacketizer, "packets", "Hexagon Packetizer",
                     false, false)
 
 
 // HexagonPacketizerList Ctor.
 HexagonPacketizerList::HexagonPacketizerList(
     MachineFunction &MF, MachineLoopInfo &MLI,
     const MachineBranchProbabilityInfo *MBPI)

llvm/trunk/lib/Target/PowerPC/PPCLoopDataPrefetch.cpp

 #include "llvm/Transforms/Scalar.h"
 #include "llvm/ADT/DepthFirstIterator.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Analysis/AssumptionCache.h"
 #include "llvm/Analysis/CodeMetrics.h"
 #include "llvm/Analysis/InstructionSimplify.h"
 #include "llvm/Analysis/LoopInfo.h"
 #include "llvm/Analysis/ScalarEvolution.h"
+#include "llvm/Analysis/ScalarEvolutionAliasAnalysis.h"
 #include "llvm/Analysis/ScalarEvolutionExpander.h"
 #include "llvm/Analysis/ScalarEvolutionExpressions.h"
 #include "llvm/Analysis/TargetTransformInfo.h"
 #include "llvm/Analysis/ValueTracking.h"
 #include "llvm/IR/CFG.h"
 #include "llvm/IR/Dominators.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/IntrinsicInst.h"

llvm/trunk/lib/Transforms/IPO/ArgumentPromotion.cpp

 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Transforms/IPO.h"
 #include "llvm/ADT/DepthFirstIterator.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/Analysis/AliasAnalysis.h"
+#include "llvm/Analysis/AssumptionCache.h"
+#include "llvm/Analysis/BasicAliasAnalysis.h"
 #include "llvm/Analysis/CallGraph.h"
 #include "llvm/Analysis/CallGraphSCCPass.h"
+#include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/Analysis/ValueTracking.h"
 #include "llvm/IR/CFG.h"
 #include "llvm/IR/CallSite.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/DebugInfo.h"
 #include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/Instructions.h"

 STATISTIC(NumByValArgsPromoted , "Number of byval arguments promoted");
 STATISTIC(NumArgumentsDead     , "Number of dead pointer args eliminated");
 
 namespace {
   /// ArgPromotion - The 'by reference' to 'by value' argument promotion pass.
   ///
   struct ArgPromotion : public CallGraphSCCPass {
     void getAnalysisUsage(AnalysisUsage &AU) const override {
-      AU.addRequired<AliasAnalysis>();
+      AU.addRequired<AssumptionCacheTracker>();
+      AU.addRequired<TargetLibraryInfoWrapperPass>();
       CallGraphSCCPass::getAnalysisUsage(AU);
     }
 
     bool runOnSCC(CallGraphSCC &SCC) override;
     static char ID; // Pass identification, replacement for typeid
     explicit ArgPromotion(unsigned maxElements = 3)
         : CallGraphSCCPass(ID), maxElements(maxElements) {
       initializeArgPromotionPass(*PassRegistry::getPassRegistry());
     }
 
     /// A vector used to hold the indices of a single GEP instruction
     typedef std::vector<uint64_t> IndicesVector;
 
   private:
     bool isDenselyPacked(Type *type, const DataLayout &DL);
     bool canPaddingBeAccessed(Argument *Arg);
     CallGraphNode *PromoteArguments(CallGraphNode *CGN);
-    bool isSafeToPromoteArgument(Argument *Arg, bool isByVal) const;
+    bool isSafeToPromoteArgument(Argument *Arg, bool isByVal,
+                                 AAResults &AAR) const;
     CallGraphNode *DoPromotion(Function *F,
                               SmallPtrSetImpl<Argument*> &ArgsToPromote,
                               SmallPtrSetImpl<Argument*> &ByValArgsToTransform);
     
     using llvm::Pass::doInitialization;
     bool doInitialization(CallGraph &CG) override;
     /// The maximum number of elements to expand, or 0 for unlimited.
     unsigned maxElements;
     DenseMap<const Function *, DISubprogram *> FunctionDIs;
   };
 }
 
 char ArgPromotion::ID = 0;
 INITIALIZE_PASS_BEGIN(ArgPromotion, "argpromotion",
                 "Promote 'by reference' arguments to scalars", false, false)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
 INITIALIZE_PASS_DEPENDENCY(CallGraphWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
 INITIALIZE_PASS_END(ArgPromotion, "argpromotion",
                 "Promote 'by reference' arguments to scalars", false, false)
 
 Pass *llvm::createArgumentPromotionPass(unsigned maxElements) {
   return new ArgPromotion(maxElements);
 }
 
 bool ArgPromotion::runOnSCC(CallGraphSCC &SCC) {
for (Use &U : F->uses()) {
     if (CS.getInstruction() == nullptr || !CS.isCallee(&U)) return nullptr;
     
     if (CS.getInstruction()->getParent()->getParent() == F)
       isSelfRecursive = true;
   }
   
   const DataLayout &DL = F->getParent()->getDataLayout();
 
+  // We need to manually construct BasicAA directly in order to disable its use
+  // of other function analyses.
+  BasicAAResult BAR(createLegacyPMBasicAAResult(*this, *F));
+
+  // Construct our own AA results for this function. We do this manually to
+  // work around the limitations of the legacy pass manager.
+  AAResults AAR(createLegacyPMAAResults(*this, *F, BAR));
+
   // Check to see which arguments are promotable.  If an argument is promotable,
   // add it to ArgsToPromote.
   SmallPtrSet<Argument*, 8> ArgsToPromote;
   SmallPtrSet<Argument*, 8> ByValArgsToTransform;
   for (unsigned i = 0, e = PointerArgs.size(); i != e; ++i) {
     Argument *PtrArg = PointerArgs[i];
     Type *AgTy = cast<PointerType>(PtrArg->getType())->getElementType();
 
if (isSelfRecursive) {
           }
         }
         if (RecursiveType)
           continue;
       }
     }
     
     // Otherwise, see if we can promote the pointer to its value.
-    if (isSafeToPromoteArgument(PtrArg, PtrArg->hasByValOrInAllocaAttr()))
+    if (isSafeToPromoteArgument(PtrArg, PtrArg->hasByValOrInAllocaAttr(), AAR))
       ArgsToPromote.insert(PtrArg);
   }
 
   // No promotable pointer arguments.
   if (ArgsToPromote.empty() && ByValArgsToTransform.empty()) 
     return nullptr;
 
   return DoPromotion(F, ArgsToPromote, ByValArgsToTransform);

 }
 
 /// isSafeToPromoteArgument - As you might guess from the name of this method,
 /// it checks to see if it is both safe and useful to promote the argument.
 /// This method limits promotion of aggregates to only promote up to three
 /// elements of the aggregate in order to avoid exploding the number of
 /// arguments passed in.
 bool ArgPromotion::isSafeToPromoteArgument(Argument *Arg,
-                                           bool isByValOrInAlloca) const {
+                                           bool isByValOrInAlloca,
+                                           AAResults &AAR) const {
   typedef std::set<IndicesVector> GEPIndicesSet;
 
   // Quick exit for unused arguments
   if (Arg->use_empty())
     return true;
 
   // We can only promote this argument if all of the uses are loads, or are GEP
   // instructions (with constant indices) that are subsequently loaded.
for (Use &U : Arg->uses()) {
     } else if (GetElementPtrInst *GEP = dyn_cast<GetElementPtrInst>(UR)) {
       if (GEP->use_empty()) {
         // Dead GEP's cause trouble later.  Just remove them if we run into
         // them.
         GEP->eraseFromParent();
         // TODO: This runs the above loop over and over again for dead GEPs
         // Couldn't we just do increment the UI iterator earlier and erase the
         // use?
-        return isSafeToPromoteArgument(Arg, isByValOrInAlloca);
+        return isSafeToPromoteArgument(Arg, isByValOrInAlloca, AAR);
       }
 
       // Ensure that all of the indices are constants.
       for (User::op_iterator i = GEP->idx_begin(), e = GEP->idx_end();
         i != e; ++i)
         if (ConstantInt *C = dyn_cast<ConstantInt>(*i))
           Operands.push_back(C->getSExtValue());
         else
bool ArgPromotion::isSafeToPromoteArgument(Argument *Arg,
   // it is safe to unconditionally perform all of them. Use alias analysis to
   // check to see if the pointer is guaranteed to not be modified from entry of
   // the function to each of the load instructions.
 
   // Because there could be several/many load instructions, remember which
   // blocks we know to be transparent to the load.
   SmallPtrSet<BasicBlock*, 16> TranspBlocks;
 
-  AliasAnalysis &AA = getAnalysis<AliasAnalysis>();
-
   for (unsigned i = 0, e = Loads.size(); i != e; ++i) {
     // Check to see if the load is invalidated from the start of the block to
     // the load itself.
     LoadInst *Load = Loads[i];
     BasicBlock *BB = Load->getParent();
 
     MemoryLocation Loc = MemoryLocation::get(Load);
-    if (AA.canInstructionRangeModRef(BB->front(), *Load, Loc, MRI_Mod))
+    if (AAR.canInstructionRangeModRef(BB->front(), *Load, Loc, MRI_Mod))
       return false;  // Pointer is invalidated!
 
     // Now check every path from the entry block to the load for transparency.
     // To do this, we perform a depth first search on the inverse CFG from the
     // loading block.
     for (BasicBlock *P : predecessors(BB)) {
       for (BasicBlock *TranspBB : inverse_depth_first_ext(P, TranspBlocks))
-        if (AA.canBasicBlockModify(*TranspBB, Loc))
+        if (AAR.canBasicBlockModify(*TranspBB, Loc))
           return false;
     }
   }
 
   // If the path from the entry of the function to each load is free of
   // instructions that potentially invalidate the load, we can make the
   // transformation!
   return true;

llvm/trunk/lib/Transforms/IPO/FunctionAttrs.cpp

 //===----------------------------------------------------------------------===//
 
 #include "llvm/Transforms/IPO.h"
 #include "llvm/ADT/SCCIterator.h"
 #include "llvm/ADT/SetVector.h"
 #include "llvm/ADT/SmallSet.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Analysis/AliasAnalysis.h"
+#include "llvm/Analysis/AssumptionCache.h"
+#include "llvm/Analysis/BasicAliasAnalysis.h"
 #include "llvm/Analysis/CallGraph.h"
 #include "llvm/Analysis/CallGraphSCCPass.h"
 #include "llvm/Analysis/CaptureTracking.h"
+#include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/Analysis/ValueTracking.h"
 #include "llvm/IR/GlobalVariable.h"
 #include "llvm/IR/InstIterator.h"
 #include "llvm/IR/IntrinsicInst.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/Analysis/TargetLibraryInfo.h"
 using namespace llvm;
 
 #define DEBUG_TYPE "functionattrs"
 
 STATISTIC(NumReadNone, "Number of functions marked readnone");
 STATISTIC(NumReadOnly, "Number of functions marked readonly");
 STATISTIC(NumNoCapture, "Number of arguments marked nocapture");
 STATISTIC(NumReadNoneArg, "Number of arguments marked readnone");
 STATISTIC(NumReadOnlyArg, "Number of arguments marked readonly");
 STATISTIC(NumNoAlias, "Number of function returns marked noalias");
 STATISTIC(NumNonNullReturn, "Number of function returns marked nonnull");
 STATISTIC(NumAnnotated, "Number of attributes added to library functions");
 
 namespace {
   struct FunctionAttrs : public CallGraphSCCPass {
     static char ID; // Pass identification, replacement for typeid
-    FunctionAttrs() : CallGraphSCCPass(ID), AA(nullptr) {
+    FunctionAttrs() : CallGraphSCCPass(ID) {
       initializeFunctionAttrsPass(*PassRegistry::getPassRegistry());
     }
 
     // runOnSCC - Analyze the SCC, performing the transformation if possible.
     bool runOnSCC(CallGraphSCC &SCC) override;
 
     // AddReadAttrs - Deduce readonly/readnone attributes for the SCC.
     bool AddReadAttrs(const CallGraphSCC &SCC);
struct FunctionAttrs : public CallGraphSCCPass {
     bool inferPrototypeAttributes(Function &F);
 
     // annotateLibraryCalls - Adds attributes to well-known standard library
     // call declarations.
     bool annotateLibraryCalls(const CallGraphSCC &SCC);
 
     void getAnalysisUsage(AnalysisUsage &AU) const override {
       AU.setPreservesCFG();
-      AU.addRequired<AliasAnalysis>();
+      AU.addRequired<AssumptionCacheTracker>();
       AU.addRequired<TargetLibraryInfoWrapperPass>();
       CallGraphSCCPass::getAnalysisUsage(AU);
     }
 
   private:
-    AliasAnalysis *AA;
     TargetLibraryInfo *TLI;
   };
 }
 
 char FunctionAttrs::ID = 0;
 INITIALIZE_PASS_BEGIN(FunctionAttrs, "functionattrs",
                 "Deduce function attributes", false, false)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
 INITIALIZE_PASS_DEPENDENCY(CallGraphWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
 INITIALIZE_PASS_END(FunctionAttrs, "functionattrs",
                 "Deduce function attributes", false, false)
 
 Pass *llvm::createFunctionAttrsPass() { return new FunctionAttrs(); }
 
 
bool FunctionAttrs::AddReadAttrs(const CallGraphSCC &SCC) {
   for (CallGraphSCC::iterator I = SCC.begin(), E = SCC.end(); I != E; ++I) {
     Function *F = (*I)->getFunction();
 
     if (!F || F->hasFnAttribute(Attribute::OptimizeNone))
       // External node or node we don't want to optimize - assume it may write
       // memory and give up.
       return false;
 
-    FunctionModRefBehavior MRB = AA->getModRefBehavior(F);
+    // We need to manually construct BasicAA directly in order to disable its
+    // use of other function analyses.
+    BasicAAResult BAR(createLegacyPMBasicAAResult(*this, *F));
+
+    // Construct our own AA results for this function. We do this manually to
+    // work around the limitations of the legacy pass manager.
+    AAResults AAR(createLegacyPMAAResults(*this, *F, BAR));
+
+    FunctionModRefBehavior MRB = AAR.getModRefBehavior(F);
     if (MRB == FMRB_DoesNotAccessMemory)
       // Already perfect!
       continue;
 
     // Definitions with weak linkage may be overridden at linktime with
     // something that writes memory, so treat them like declarations.
     if (F->isDeclaration() || F->mayBeOverridden()) {
       if (!AliasAnalysis::onlyReadsMemory(MRB))
for (inst_iterator II = inst_begin(F), E = inst_end(F); II != E; ++II) {
 
       // Some instructions can be ignored even if they read or write memory.
       // Detect these now, skipping to the next instruction if one is found.
       CallSite CS(cast<Value>(I));
       if (CS) {
         // Ignore calls to functions in the same SCC.
         if (CS.getCalledFunction() && SCCNodes.count(CS.getCalledFunction()))
           continue;
-        FunctionModRefBehavior MRB = AA->getModRefBehavior(CS);
+        FunctionModRefBehavior MRB = AAR.getModRefBehavior(CS);
         // If the call doesn't access arbitrary memory, we may be able to
         // figure out something.
         if (AliasAnalysis::onlyAccessesArgPointees(MRB)) {
           // If the call does access argument pointees, check each argument.
           if (AliasAnalysis::doesAccessArgPointees(MRB))
             // Check whether all pointer arguments point to local memory, and
             // ignore calls that only access local memory.
             for (CallSite::arg_iterator CI = CS.arg_begin(), CE = CS.arg_end();
                  CI != CE; ++CI) {
               Value *Arg = *CI;
               if (Arg->getType()->isPointerTy()) {
                 AAMDNodes AAInfo;
                 I->getAAMetadata(AAInfo);
 
                 MemoryLocation Loc(Arg, MemoryLocation::UnknownSize, AAInfo);
-                if (!AA->pointsToConstantMemory(Loc, /*OrLocal=*/true)) {
+                if (!AAR.pointsToConstantMemory(Loc, /*OrLocal=*/true)) {
                   if (MRB & MRI_Mod)
                     // Writes non-local memory.  Give up.
                     return false;
                   if (MRB & MRI_Ref)
                     // Ok, it reads non-local memory.
                     ReadsMemory = true;
                 }
               }
             }
           continue;
         }
         // The call could access any memory. If that includes writes, give up.
         if (MRB & MRI_Mod)
           return false;
         // If it reads, note it.
         if (MRB & MRI_Ref)
           ReadsMemory = true;
         continue;
       } else if (LoadInst *LI = dyn_cast<LoadInst>(I)) {
         // Ignore non-volatile loads from local memory. (Atomic is okay here.)
         if (!LI->isVolatile()) {
           MemoryLocation Loc = MemoryLocation::get(LI);
-          if (AA->pointsToConstantMemory(Loc, /*OrLocal=*/true))
+          if (AAR.pointsToConstantMemory(Loc, /*OrLocal=*/true))
             continue;
         }
       } else if (StoreInst *SI = dyn_cast<StoreInst>(I)) {
         // Ignore non-volatile stores to local memory. (Atomic is okay here.)
         if (!SI->isVolatile()) {
           MemoryLocation Loc = MemoryLocation::get(SI);
-          if (AA->pointsToConstantMemory(Loc, /*OrLocal=*/true))
+          if (AAR.pointsToConstantMemory(Loc, /*OrLocal=*/true))
             continue;
         }
       } else if (VAArgInst *VI = dyn_cast<VAArgInst>(I)) {
         // Ignore vaargs on local memory.
         MemoryLocation Loc = MemoryLocation::get(VI);
-        if (AA->pointsToConstantMemory(Loc, /*OrLocal=*/true))
+        if (AAR.pointsToConstantMemory(Loc, /*OrLocal=*/true))
           continue;
       }
 
       // Any remaining instructions need to be taken seriously!  Check if they
       // read or write memory.
       if (I->mayWriteToMemory())
         // Writes memory.  Just give up.
         return false;
for (CallGraphSCC::iterator I = SCC.begin(), E = SCC.end(); I != E; ++I) {
     if (F && F->isDeclaration())
       MadeChange |= inferPrototypeAttributes(*F);
   }
 
   return MadeChange;
 }
 
 bool FunctionAttrs::runOnSCC(CallGraphSCC &SCC) {
-  AA = &getAnalysis<AliasAnalysis>();
   TLI = &getAnalysis<TargetLibraryInfoWrapperPass>().getTLI();
 
   bool Changed = annotateLibraryCalls(SCC);
   Changed |= AddReadAttrs(SCC);
   Changed |= AddArgumentAttrs(SCC);
   Changed |= AddNoAliasAttrs(SCC);
   Changed |= AddNonNullAttrs(SCC);
   return Changed;
 }

llvm/trunk/lib/Transforms/IPO/InlineAlways.cpp

 //===- InlineAlways.cpp - Code to inline always_inline functions ----------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file implements a custom inliner that handles only functions that
 // are marked as "always inline".
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Transforms/IPO.h"
 #include "llvm/ADT/SmallPtrSet.h"
-#include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/Analysis/AssumptionCache.h"
 #include "llvm/Analysis/CallGraph.h"
 #include "llvm/Analysis/InlineCost.h"
+#include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/IR/CallSite.h"
 #include "llvm/IR/CallingConv.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/IntrinsicInst.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/Type.h"
 #include "llvm/Transforms/IPO/InlinerPass.h"
public:
   }
 };
 
 }
 
 char AlwaysInliner::ID = 0;
 INITIALIZE_PASS_BEGIN(AlwaysInliner, "always-inline",
                 "Inliner for always_inline functions", false, false)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
 INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
 INITIALIZE_PASS_DEPENDENCY(CallGraphWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(InlineCostAnalysis)
+INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
 INITIALIZE_PASS_END(AlwaysInliner, "always-inline",
                 "Inliner for always_inline functions", false, false)
 
 Pass *llvm::createAlwaysInlinerPass() { return new AlwaysInliner(); }
 
 Pass *llvm::createAlwaysInlinerPass(bool InsertLifetime) {
   return new AlwaysInliner(InsertLifetime);
 }

llvm/trunk/lib/Transforms/IPO/InlineSimple.cpp

 //===- InlineSimple.cpp - Code to perform simple function inlining --------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file implements bottom-up inlining of functions into callees.
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Transforms/IPO.h"
-#include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/Analysis/AssumptionCache.h"
 #include "llvm/Analysis/CallGraph.h"
 #include "llvm/Analysis/InlineCost.h"
+#include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/IR/CallSite.h"
 #include "llvm/IR/CallingConv.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/IntrinsicInst.h"
 #include "llvm/IR/Module.h"
 #include "llvm/IR/Type.h"
 #include "llvm/Transforms/IPO/InlinerPass.h"
static int computeThresholdFromOptLevels(unsigned OptLevel,
   return 225;
 }
 
 } // end anonymous namespace
 
 char SimpleInliner::ID = 0;
 INITIALIZE_PASS_BEGIN(SimpleInliner, "inline",
                 "Function Integration/Inlining", false, false)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
 INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
 INITIALIZE_PASS_DEPENDENCY(CallGraphWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(InlineCostAnalysis)
+INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
 INITIALIZE_PASS_END(SimpleInliner, "inline",
                 "Function Integration/Inlining", false, false)
 
 Pass *llvm::createFunctionInliningPass() { return new SimpleInliner(); }
 
 Pass *llvm::createFunctionInliningPass(int Threshold) {
   return new SimpleInliner(Threshold);
 }

llvm/trunk/lib/Transforms/IPO/Inliner.cpp

 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Transforms/IPO/InlinerPass.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/Analysis/AssumptionCache.h"
+#include "llvm/Analysis/BasicAliasAnalysis.h"
 #include "llvm/Analysis/CallGraph.h"
 #include "llvm/Analysis/InlineCost.h"
 #include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/IR/CallSite.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/DiagnosticInfo.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/IntrinsicInst.h"
Inliner::Inliner(char &ID, int Threshold, bool InsertLifetime)
   : CallGraphSCCPass(ID), InlineThreshold(InlineLimit.getNumOccurrences() > 0 ?
                                           InlineLimit : Threshold),
     InsertLifetime(InsertLifetime) {}
 
 /// For this class, we declare that we require and preserve the call graph.
 /// If the derived class implements this method, it should
 /// always explicitly call the implementation here.
 void Inliner::getAnalysisUsage(AnalysisUsage &AU) const {
-  AU.addRequired<AliasAnalysis>();
   AU.addRequired<AssumptionCacheTracker>();
+  AU.addRequired<TargetLibraryInfoWrapperPass>();
   CallGraphSCCPass::getAnalysisUsage(AU);
 }
 
 
 typedef DenseMap<ArrayType*, std::vector<AllocaInst*> >
 InlinedArrayAllocasTy;
 
 /// \brief If the inlined function had a higher stack protection level than the

 /// If it is possible to inline the specified call site,
 /// do so and update the CallGraph for this operation.
 ///
 /// This function also does some basic book-keeping to update the IR.  The
 /// InlinedArrayAllocas map keeps track of any allocas that are already
 /// available from other functions inlined into the caller.  If we are able to
 /// inline this call site we attempt to reuse already available allocas or add
 /// any new allocas to the set if not possible.
-static bool InlineCallIfPossible(CallSite CS, InlineFunctionInfo &IFI,
+static bool InlineCallIfPossible(Pass &P, CallSite CS, InlineFunctionInfo &IFI,
                                  InlinedArrayAllocasTy &InlinedArrayAllocas,
                                  int InlineHistory, bool InsertLifetime) {
   Function *Callee = CS.getCalledFunction();
   Function *Caller = CS.getCaller();
 
+  // We need to manually construct BasicAA directly in order to disable
+  // its use of other function analyses.
+  BasicAAResult BAR(createLegacyPMBasicAAResult(P, *Callee));
+
+  // Construct our own AA results for this function. We do this manually to
+  // work around the limitations of the legacy pass manager.
+  AAResults AAR(createLegacyPMAAResults(P, *Callee, BAR));
+
   // Try to inline the function.  Get the list of static allocas that were
   // inlined.
-  if (!InlineFunction(CS, IFI, InsertLifetime))
+  if (!InlineFunction(CS, IFI, &AAR, InsertLifetime))
     return false;
 
   AdjustCallerSSPLevel(Caller, Callee);
 
   // Look at all of the allocas that we inlined through this call site.  If we
   // have already inlined other allocas through other calls into this function,
   // then we know that they have disjoint lifetimes and that we can merge them.
   //
while (InlineHistoryID != -1) {
     InlineHistoryID = InlineHistory[InlineHistoryID].second;
   }
   return false;
 }
 
 bool Inliner::runOnSCC(CallGraphSCC &SCC) {
   CallGraph &CG = getAnalysis<CallGraphWrapperPass>().getCallGraph();
   AssumptionCacheTracker *ACT = &getAnalysis<AssumptionCacheTracker>();
-  auto *TLIP = getAnalysisIfAvailable<TargetLibraryInfoWrapperPass>();
-  const TargetLibraryInfo *TLI = TLIP ? &TLIP->getTLI() : nullptr;
-  AliasAnalysis *AA = &getAnalysis<AliasAnalysis>();
+  auto &TLI = getAnalysis<TargetLibraryInfoWrapperPass>().getTLI();
 
   SmallPtrSet<Function*, 8> SCCFunctions;
   DEBUG(dbgs() << "Inliner visiting SCC:");
   for (CallGraphNode *Node : SCC) {
     Function *F = Node->getFunction();
     if (F) SCCFunctions.insert(F);
     DEBUG(dbgs() << " " << (F ? F->getName() : "INDIRECTNODE"));
   }
bool Inliner::runOnSCC(CallGraphSCC &SCC) {
   unsigned FirstCallInSCC = CallSites.size();
   for (unsigned i = 0; i < FirstCallInSCC; ++i)
     if (Function *F = CallSites[i].first.getCalledFunction())
       if (SCCFunctions.count(F))
         std::swap(CallSites[i--], CallSites[--FirstCallInSCC]);
 
   
   InlinedArrayAllocasTy InlinedArrayAllocas;
-  InlineFunctionInfo InlineInfo(&CG, AA, ACT);
+  InlineFunctionInfo InlineInfo(&CG, ACT);
 
   // Now that we have all of the call sites, loop over them and inline them if
   // it looks profitable to do so.
   bool Changed = false;
   bool LocalChange;
   do {
     LocalChange = false;
     // Iterate over the outer loop because inlining functions can cause indirect
     // calls to become direct calls.
     // CallSites may be modified inside so ranged for loop can not be used.
     for (unsigned CSi = 0; CSi != CallSites.size(); ++CSi) {
       CallSite CS = CallSites[CSi].first;
       
       Function *Caller = CS.getCaller();
       Function *Callee = CS.getCalledFunction();
 
       // If this call site is dead and it is to a readonly function, we should
       // just delete the call instead of trying to inline it, regardless of
       // size.  This happens because IPSCCP propagates the result out of the
       // call and then we're left with the dead call.
-      if (isInstructionTriviallyDead(CS.getInstruction(), TLI)) {
+      if (isInstructionTriviallyDead(CS.getInstruction(), &TLI)) {
         DEBUG(dbgs() << "    -> Deleting dead call: "
                      << *CS.getInstruction() << "\n");
         // Update the call graph by deleting the edge from Callee to Caller.
         CG[Caller]->removeCallEdgeFor(CS);
         CS.getInstruction()->eraseFromParent();
         ++NumCallsDeleted;
       } else {
         // We can only inline direct calls to non-declarations.
for (unsigned CSi = 0; CSi != CallSites.size(); ++CSi) {
           emitOptimizationRemarkMissed(CallerCtx, DEBUG_TYPE, *Caller, DLoc,
                                        Twine(Callee->getName() +
                                              " will not be inlined into " +
                                              Caller->getName()));
           continue;
         }
 
         // Attempt to inline the function.
-        if (!InlineCallIfPossible(CS, InlineInfo, InlinedArrayAllocas,
+        if (!InlineCallIfPossible(*this, CS, InlineInfo, InlinedArrayAllocas,
                                   InlineHistoryID, InsertLifetime)) {
           emitOptimizationRemarkMissed(CallerCtx, DEBUG_TYPE, *Caller, DLoc,
                                        Twine(Callee->getName() +
                                              " will not be inlined into " +
                                              Caller->getName()));
           continue;
         }
         ++NumInlined;

llvm/trunk/lib/Transforms/IPO/PassManagerBuilder.cpp

 }
 
 void PassManagerBuilder::addInitialAliasAnalysisPasses(
     legacy::PassManagerBase &PM) const {
   // Add TypeBasedAliasAnalysis before BasicAliasAnalysis so that
   // BasicAliasAnalysis wins if they disagree. This is intended to help
   // support "obvious" type-punning idioms.
   if (UseCFLAA)
-    PM.add(createCFLAliasAnalysisPass());
-  PM.add(createTypeBasedAliasAnalysisPass());
-  PM.add(createScopedNoAliasAAPass());
-  PM.add(createBasicAliasAnalysisPass());
+    PM.add(createCFLAAWrapperPass());
+  PM.add(createTypeBasedAAWrapperPass());
+  PM.add(createScopedNoAliasAAWrapperPass());
 }
 
 void PassManagerBuilder::populateFunctionPassManager(
     legacy::FunctionPassManager &FPM) {
   addExtensionsToPM(EP_EarlyAsPossible, FPM);
 
   // Add LibraryInfo if we have some.
   if (LibraryInfo)
if (!DisableUnitAtATime) {
     addExtensionsToPM(EP_Peephole, MPM);
     MPM.add(createCFGSimplificationPass());   // Clean up after IPCP & DAE
   }
 
   if (EnableNonLTOGlobalsModRef)
     // We add a module alias analysis pass here. In part due to bugs in the
     // analysis infrastructure this "works" in that the analysis stays alive
     // for the entire SCC pass run below.
-    MPM.add(createGlobalsModRefPass());
+    MPM.add(createGlobalsAAWrapperPass());
 
   // Start of CallGraph SCC passes.
   if (!DisableUnitAtATime)
     MPM.add(createPruneEHPass());             // Remove dead EH info
   if (Inliner) {
     MPM.add(Inliner);
     Inliner = nullptr;
   }
if (EnableNonLTOGlobalsModRef)
     //
     // Note that this relies on a bug in the pass manager which preserves
     // a module analysis into a function pass pipeline (and throughout it) so
     // long as the first function pass doesn't invalidate the module analysis.
     // Thus both Float2Int and LoopRotate have to preserve AliasAnalysis for
     // this to work. Fortunately, it is trivial to preserve AliasAnalysis
     // (doing nothing preserves it as it is required to be conservatively
     // correct in the face of IR changes).
-    MPM.add(createGlobalsModRefPass());
+    MPM.add(createGlobalsAAWrapperPass());
 
   if (RunFloat2Int)
     MPM.add(createFloat2IntPass());
 
   addExtensionsToPM(EP_VectorizerStart, MPM);
 
   // Re-rotate loops in all our loop nests. These may have fallout out of
   // rotated form due to GVN or other transformations, and the vectorizer relies
void PassManagerBuilder::addLTOOptimizationPasses(legacy::PassManagerBase &PM) {
   // Break up allocas
   if (UseNewSROA)
     PM.add(createSROAPass());
   else
     PM.add(createScalarReplAggregatesPass());
 
   // Run a few AA driven optimizations here and now, to cleanup the code.
   PM.add(createFunctionAttrsPass()); // Add nocapture.
-  PM.add(createGlobalsModRefPass()); // IP alias analysis.
+  PM.add(createGlobalsAAWrapperPass()); // IP alias analysis.
 
   PM.add(createLICMPass());                 // Hoist loop invariants.
   if (EnableMLSM)
     PM.add(createMergedLoadStoreMotionPass()); // Merge ld/st in diamonds.
   PM.add(createGVNPass(DisableGVNLoadPRE)); // Remove redundancies.
   PM.add(createMemCpyOptPass());            // Remove dead memcpys.
 
   // Nuke dead stores.

llvm/trunk/lib/Transforms/InstCombine/InstructionCombining.cpp

 #include "InstCombineInternal.h"
 #include "llvm-c/Initialization.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/ADT/StringSwitch.h"
 #include "llvm/Analysis/AssumptionCache.h"
 #include "llvm/Analysis/CFG.h"
 #include "llvm/Analysis/ConstantFolding.h"
+#include "llvm/Analysis/GlobalsModRef.h"
 #include "llvm/Analysis/InstructionSimplify.h"
 #include "llvm/Analysis/LibCallSemantics.h"
 #include "llvm/Analysis/LoopInfo.h"
 #include "llvm/Analysis/MemoryBuiltins.h"
 #include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/Analysis/ValueTracking.h"
 #include "llvm/IR/CFG.h"
 #include "llvm/IR/DataLayout.h"
public:
 
   void getAnalysisUsage(AnalysisUsage &AU) const override;
   bool runOnFunction(Function &F) override;
 };
 }
 
 void InstructionCombiningPass::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.setPreservesCFG();
-  AU.addRequired<AliasAnalysis>();
+  AU.addRequired<AAResultsWrapperPass>();
   AU.addRequired<AssumptionCacheTracker>();
   AU.addRequired<TargetLibraryInfoWrapperPass>();
   AU.addRequired<DominatorTreeWrapperPass>();
   AU.addPreserved<DominatorTreeWrapperPass>();
+  AU.addPreserved<GlobalsAAWrapperPass>();
 }
 
 bool InstructionCombiningPass::runOnFunction(Function &F) {
   if (skipOptnoneFunction(F))
     return false;
 
   // Required analyses.
-  auto AA = &getAnalysis<AliasAnalysis>();
+  auto AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
   auto &AC = getAnalysis<AssumptionCacheTracker>().getAssumptionCache(F);
   auto &TLI = getAnalysis<TargetLibraryInfoWrapperPass>().getTLI();
   auto &DT = getAnalysis<DominatorTreeWrapperPass>().getDomTree();
 
   // Optional analyses.
   auto *LIWP = getAnalysisIfAvailable<LoopInfoWrapperPass>();
   auto *LI = LIWP ? &LIWP->getLoopInfo() : nullptr;
 
   return combineInstructionsOverFunction(F, Worklist, AA, AC, TLI, DT, LI);
 }
 
 char InstructionCombiningPass::ID = 0;
 INITIALIZE_PASS_BEGIN(InstructionCombiningPass, "instcombine",
                       "Combine redundant instructions", false, false)
 INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
 INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(GlobalsAAWrapperPass)
 INITIALIZE_PASS_END(InstructionCombiningPass, "instcombine",
                     "Combine redundant instructions", false, false)
 
 // Initialization Routines
 void llvm::initializeInstCombine(PassRegistry &Registry) {
   initializeInstructionCombiningPassPass(Registry);
 }
 
 void LLVMInitializeInstCombine(LLVMPassRegistryRef R) {
   initializeInstructionCombiningPassPass(*unwrap(R));
 }
 
 FunctionPass *llvm::createInstructionCombiningPass() {
   return new InstructionCombiningPass();
 }

llvm/trunk/lib/Transforms/Instrumentation/SafeStack.cpp

 
 public:
   static char ID; // Pass identification, replacement for typeid.
   SafeStack() : FunctionPass(ID), DL(nullptr) {
     initializeSafeStackPass(*PassRegistry::getPassRegistry());
   }
 
   virtual void getAnalysisUsage(AnalysisUsage &AU) const {
-    AU.addRequired<AliasAnalysis>();
+    AU.addRequired<AAResultsWrapperPass>();
   }
 
   virtual bool doInitialization(Module &M) {
     DL = &M.getDataLayout();
 
     StackPtrTy = Type::getInt8PtrTy(M.getContext());
     IntPtrTy = DL->getIntPtrType(M.getContext());
     Int32Ty = Type::getInt32Ty(M.getContext());
for (inst_iterator It = inst_begin(&F), Ie = inst_end(&F); It != Ie;) {
         assert(II->use_empty());
         II->eraseFromParent();
       }
     }
   }
 }
 
 bool SafeStack::runOnFunction(Function &F) {
-  auto AA = &getAnalysis<AliasAnalysis>();
+  auto AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
 
   DEBUG(dbgs() << "[SafeStack] Function: " << F.getName() << "\n");
 
   if (!F.hasFnAttribute(Attribute::SafeStack)) {
     DEBUG(dbgs() << "[SafeStack]     safestack is not requested"
                     " for this function\n");
     return false;
   }

llvm/trunk/lib/Transforms/ObjCARC/ObjCARC.cpp

 }
 
 using namespace llvm;
 using namespace llvm::objcarc;
 
 /// initializeObjCARCOptsPasses - Initialize all passes linked into the
 /// ObjCARCOpts library.
 void llvm::initializeObjCARCOpts(PassRegistry &Registry) {
-  initializeObjCARCAliasAnalysisPass(Registry);
+  initializeObjCARCAAWrapperPassPass(Registry);
   initializeObjCARCAPElimPass(Registry);
   initializeObjCARCExpandPass(Registry);
   initializeObjCARCContractPass(Registry);
   initializeObjCARCOptPass(Registry);
   initializePAEvalPass(Registry);
 }
 
 void LLVMInitializeObjCARCOpts(LLVMPassRegistryRef R) {
   initializeObjCARCOpts(*unwrap(R));
 }

llvm/trunk/lib/Transforms/ObjCARC/ObjCARCContract.cpp

bool ObjCARCContract::runOnFunction(Function &F) {
   if (!EnableARCOpts)
     return false;
 
   // If nothing in the Module uses ARC, don't do anything.
   if (!Run)
     return false;
 
   Changed = false;
-  AA = &getAnalysis<AliasAnalysis>();
+  AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
   DT = &getAnalysis<DominatorTreeWrapperPass>().getDomTree();
 
-  PA.setAA(&getAnalysis<AliasAnalysis>());
+  PA.setAA(&getAnalysis<AAResultsWrapperPass>().getAAResults());
 
   DEBUG(llvm::dbgs() << "**** ObjCARC Contract ****\n");
 
   // Track whether it's ok to mark objc_storeStrong calls with the "tail"
   // keyword. Be conservative if the function has variadic arguments.
   // It seems that functions which "return twice" are also unsafe for the
   // "tail" argument, because they are setjmp, which could need to
   // return to an earlier stack state.

 
 //===----------------------------------------------------------------------===//
 //                             Misc Pass Manager
 //===----------------------------------------------------------------------===//
 
 char ObjCARCContract::ID = 0;
 INITIALIZE_PASS_BEGIN(ObjCARCContract, "objc-arc-contract",
                       "ObjC ARC contraction", false, false)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
 INITIALIZE_PASS_END(ObjCARCContract, "objc-arc-contract",
                     "ObjC ARC contraction", false, false)
 
 void ObjCARCContract::getAnalysisUsage(AnalysisUsage &AU) const {
-  AU.addRequired<AliasAnalysis>();
+  AU.addRequired<AAResultsWrapperPass>();
   AU.addRequired<DominatorTreeWrapperPass>();
   AU.setPreservesCFG();
 }
 
 Pass *llvm::createObjCARCContractPass() { return new ObjCARCContract(); }
 
 bool ObjCARCContract::doInitialization(Module &M) {
   // If nothing in the Module uses ARC, don't do anything.

llvm/trunk/lib/Transforms/ObjCARC/ObjCARCOpts.cpp

ObjCARCOpt() : FunctionPass(ID) {
       initializeObjCARCOptPass(*PassRegistry::getPassRegistry());
     }
   };
 }
 
 char ObjCARCOpt::ID = 0;
 INITIALIZE_PASS_BEGIN(ObjCARCOpt,
                       "objc-arc", "ObjC ARC optimization", false, false)
-INITIALIZE_PASS_DEPENDENCY(ObjCARCAliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(ObjCARCAAWrapperPass)
 INITIALIZE_PASS_END(ObjCARCOpt,
                     "objc-arc", "ObjC ARC optimization", false, false)
 
 Pass *llvm::createObjCARCOptPass() {
   return new ObjCARCOpt();
 }
 
 void ObjCARCOpt::getAnalysisUsage(AnalysisUsage &AU) const {
-  AU.addRequired<ObjCARCAliasAnalysis>();
-  AU.addRequired<AliasAnalysis>();
+  AU.addRequired<ObjCARCAAWrapperPass>();
+  AU.addRequired<AAResultsWrapperPass>();
   // ARC optimization doesn't currently split critical edges.
   AU.setPreservesCFG();
 }
 
 /// Turn objc_retainAutoreleasedReturnValue into objc_retain if the operand is
 /// not a return value.  Or, if it can be paired with an
 /// objc_autoreleaseReturnValue, delete the pair and return true.
 bool
bool ObjCARCOpt::runOnFunction(Function &F) {
   if (!Run)
     return false;
 
   Changed = false;
 
   DEBUG(dbgs() << "<<< ObjCARCOpt: Visiting Function: " << F.getName() << " >>>"
         "\n");
 
-  PA.setAA(&getAnalysis<AliasAnalysis>());
+  PA.setAA(&getAnalysis<AAResultsWrapperPass>().getAAResults());
 
 #ifndef NDEBUG
   if (AreStatisticsEnabled()) {
     GatherStatistics(F, false);
   }
 #endif
 
   // This pass performs several distinct transformations. As a compile-time aid

llvm/trunk/lib/Transforms/ObjCARC/ProvenanceAnalysis.h

 /// behavior-preserving may break these assumptions.
 ///
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_LIB_TRANSFORMS_OBJCARC_PROVENANCEANALYSIS_H
 #define LLVM_LIB_TRANSFORMS_OBJCARC_PROVENANCEANALYSIS_H
 
 #include "llvm/ADT/DenseMap.h"
+#include "llvm/Analysis/AliasAnalysis.h"
 
 namespace llvm {
   class Value;
-  class AliasAnalysis;
   class DataLayout;
   class PHINode;
   class SelectInst;
 }
 
 namespace llvm {
 namespace objcarc {
 

llvm/trunk/lib/Transforms/ObjCARC/ProvenanceAnalysisEvaluator.cpp

public:
   bool runOnFunction(Function &F) override;
 };
 }
 
 char PAEval::ID = 0;
 PAEval::PAEval() : FunctionPass(ID) {}
 
 void PAEval::getAnalysisUsage(AnalysisUsage &AU) const {
-  AU.addRequired<AliasAnalysis>();
+  AU.addRequired<AAResultsWrapperPass>();
 }
 
 static StringRef getName(Value *V) {
   StringRef Name = V->getName();
   if (Name.startswith("\1"))
     return Name.substr(1);
   return Name;
 }
bool PAEval::runOnFunction(Function &F) {
   for (auto I = inst_begin(F), E = inst_end(F); I != E; ++I) {
     insertIfNamed(Values, &*I);
 
     for (auto &Op : I->operands())
     insertIfNamed(Values, Op);
   }
 
   ProvenanceAnalysis PA;
-  PA.setAA(&getAnalysis<AliasAnalysis>());
+  PA.setAA(&getAnalysis<AAResultsWrapperPass>().getAAResults());
   const DataLayout &DL = F.getParent()->getDataLayout();
 
   for (Value *V1 : Values) {
     StringRef NameV1 = getName(V1);
     for (Value *V2 : Values) {
       StringRef NameV2 = getName(V2);
       if (NameV1 >= NameV2)
         continue;
       errs() << NameV1 << " and " << NameV2;
       if (PA.related(V1, V2, DL))
         errs() << " are related.\n";
       else
         errs() << " are not related.\n";
     }
   }
 
   return false;
 }
 
 FunctionPass *llvm::createPAEvalPass() { return new PAEval(); }
 
 INITIALIZE_PASS_BEGIN(PAEval, "pa-eval",
                       "Evaluate ProvenanceAnalysis on all pairs", false, true)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_END(PAEval, "pa-eval",
                     "Evaluate ProvenanceAnalysis on all pairs", false, true)

llvm/trunk/lib/Transforms/Scalar/DeadStoreElimination.cpp

 //===----------------------------------------------------------------------===//
 
 #include "llvm/Transforms/Scalar.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SetVector.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/Analysis/CaptureTracking.h"
+#include "llvm/Analysis/GlobalsModRef.h"
 #include "llvm/Analysis/MemoryBuiltins.h"
 #include "llvm/Analysis/MemoryDependenceAnalysis.h"
 #include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/Analysis/ValueTracking.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/Dominators.h"
 #include "llvm/IR/Function.h"
struct DSE : public FunctionPass {
     DSE() : FunctionPass(ID), AA(nullptr), MD(nullptr), DT(nullptr) {
       initializeDSEPass(*PassRegistry::getPassRegistry());
     }
 
     bool runOnFunction(Function &F) override {
       if (skipOptnoneFunction(F))
         return false;
 
-      AA = &getAnalysis<AliasAnalysis>();
+      AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
       MD = &getAnalysis<MemoryDependenceAnalysis>();
       DT = &getAnalysis<DominatorTreeWrapperPass>().getDomTree();
       TLI = &getAnalysis<TargetLibraryInfoWrapperPass>().getTLI();
 
       bool Changed = false;
       for (Function::iterator I = F.begin(), E = F.end(); I != E; ++I)
         // Only check non-dead blocks.  Dead blocks may have strange pointer
         // cycles that will confuse alias analysis.
struct DSE : public FunctionPass {
     bool handleEndBlock(BasicBlock &BB);
     void RemoveAccessedObjects(const MemoryLocation &LoadedLoc,
                                SmallSetVector<Value *, 16> &DeadStackObjects,
                                const DataLayout &DL);
 
     void getAnalysisUsage(AnalysisUsage &AU) const override {
       AU.setPreservesCFG();
       AU.addRequired<DominatorTreeWrapperPass>();
-      AU.addRequired<AliasAnalysis>();
+      AU.addRequired<AAResultsWrapperPass>();
       AU.addRequired<MemoryDependenceAnalysis>();
       AU.addRequired<TargetLibraryInfoWrapperPass>();
-      AU.addPreserved<AliasAnalysis>();
       AU.addPreserved<DominatorTreeWrapperPass>();
+      AU.addPreserved<GlobalsAAWrapperPass>();
       AU.addPreserved<MemoryDependenceAnalysis>();
     }
   };
 }
 
 char DSE::ID = 0;
 INITIALIZE_PASS_BEGIN(DSE, "dse", "Dead Store Elimination", false, false)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
 INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(GlobalsAAWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(MemoryDependenceAnalysis)
 INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
 INITIALIZE_PASS_END(DSE, "dse", "Dead Store Elimination", false, false)
 
 FunctionPass *llvm::createDeadStoreEliminationPass() { return new DSE(); }
 
 //===----------------------------------------------------------------------===//
 // Helper functions

llvm/trunk/lib/Transforms/Scalar/FlattenCFGPass.cpp

struct FlattenCFGPass : public FunctionPass {
   static char ID; // Pass identification, replacement for typeid
 public:
   FlattenCFGPass() : FunctionPass(ID) {
     initializeFlattenCFGPassPass(*PassRegistry::getPassRegistry());
   }
   bool runOnFunction(Function &F) override;
 
   void getAnalysisUsage(AnalysisUsage &AU) const override {
-    AU.addRequired<AliasAnalysis>();
+    AU.addRequired<AAResultsWrapperPass>();
   }
 
 private:
   AliasAnalysis *AA;
 };
 }
 
 char FlattenCFGPass::ID = 0;
 INITIALIZE_PASS_BEGIN(FlattenCFGPass, "flattencfg", "Flatten the CFG", false,
                       false)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_END(FlattenCFGPass, "flattencfg", "Flatten the CFG", false,
                     false)
 
 // Public interface to the FlattenCFG pass
 FunctionPass *llvm::createFlattenCFGPass() { return new FlattenCFGPass(); }
 
 /// iterativelyFlattenCFG - Call FlattenCFG on all the blocks in the function,
 /// iterating until no more changes are made.
for (Function::iterator BBIt = F.begin(); BBIt != F.end();) {
       }
     }
     Changed |= LocalChange;
   }
   return Changed;
 }
 
 bool FlattenCFGPass::runOnFunction(Function &F) {
-  AA = &getAnalysis<AliasAnalysis>();
+  AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
   bool EverChanged = false;
   // iterativelyFlattenCFG can make some blocks dead.
   while (iterativelyFlattenCFG(F, AA)) {
     removeUnreachableBlocks(F);
     EverChanged = true;
   }
   return EverChanged;
 }

llvm/trunk/lib/Transforms/Scalar/Float2Int.cpp

 #define DEBUG_TYPE "float2int"
 #include "llvm/ADT/APInt.h"
 #include "llvm/ADT/APSInt.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/EquivalenceClasses.h"
 #include "llvm/ADT/MapVector.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/Analysis/AliasAnalysis.h"
+#include "llvm/Analysis/GlobalsModRef.h"
 #include "llvm/IR/ConstantRange.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/InstIterator.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/Module.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/Debug.h"
struct Float2Int : public FunctionPass {
     static char ID; // Pass identification, replacement for typeid
     Float2Int() : FunctionPass(ID) {
       initializeFloat2IntPass(*PassRegistry::getPassRegistry());
     }
 
     bool runOnFunction(Function &F) override;
     void getAnalysisUsage(AnalysisUsage &AU) const override {
       AU.setPreservesCFG();
-      AU.addPreserved<AliasAnalysis>();
+      AU.addPreserved<GlobalsAAWrapperPass>();
     }
 
     void findRoots(Function &F, SmallPtrSet<Instruction*,8> &Roots);
     ConstantRange seen(Instruction *I, ConstantRange R);
     ConstantRange badRange();
     ConstantRange unknownRange();
     ConstantRange validateRange(ConstantRange R);
     void walkBackwards(const SmallPtrSetImpl<Instruction*> &Roots);
     void walkForwards();
     bool validateAndTransform();
     Value *convert(Instruction *I, Type *ToTy);
     void cleanup();
 
     MapVector<Instruction*, ConstantRange > SeenInsts;
     SmallPtrSet<Instruction*,8> Roots;
     EquivalenceClasses<Instruction*> ECs;
     MapVector<Instruction*, Value*> ConvertedInsts;
     LLVMContext *Ctx;
   };
 }
 
 char Float2Int::ID = 0;
-INITIALIZE_PASS(Float2Int, "float2int", "Float to int", false, false)
+INITIALIZE_PASS_BEGIN(Float2Int, "float2int", "Float to int", false, false)
+INITIALIZE_PASS_DEPENDENCY(GlobalsAAWrapperPass)
+INITIALIZE_PASS_END(Float2Int, "float2int", "Float to int", false, false)
 
 // Given a FCmp predicate, return a matching ICmp predicate if one
 // exists, otherwise return BAD_ICMP_PREDICATE.
 static CmpInst::Predicate mapFCmpPred(CmpInst::Predicate P) {
   switch (P) {
   case CmpInst::FCMP_OEQ:
   case CmpInst::FCMP_UEQ:
     return CmpInst::ICMP_EQ;

llvm/trunk/lib/Transforms/Scalar/GVN.cpp

 #include "llvm/ADT/PostOrderIterator.h"
 #include "llvm/ADT/SetVector.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/Analysis/AssumptionCache.h"
 #include "llvm/Analysis/CFG.h"
 #include "llvm/Analysis/ConstantFolding.h"
+#include "llvm/Analysis/GlobalsModRef.h"
 #include "llvm/Analysis/InstructionSimplify.h"
 #include "llvm/Analysis/Loads.h"
 #include "llvm/Analysis/MemoryBuiltins.h"
 #include "llvm/Analysis/MemoryDependenceAnalysis.h"
 #include "llvm/Analysis/PHITransAddr.h"
 #include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/Analysis/ValueTracking.h"
 #include "llvm/IR/DataLayout.h"
private:
 
     // This transformation requires dominator postdominator info
     void getAnalysisUsage(AnalysisUsage &AU) const override {
       AU.addRequired<AssumptionCacheTracker>();
       AU.addRequired<DominatorTreeWrapperPass>();
       AU.addRequired<TargetLibraryInfoWrapperPass>();
       if (!NoLoads)
         AU.addRequired<MemoryDependenceAnalysis>();
-      AU.addRequired<AliasAnalysis>();
+      AU.addRequired<AAResultsWrapperPass>();
 
       AU.addPreserved<DominatorTreeWrapperPass>();
-      AU.addPreserved<AliasAnalysis>();
+      AU.addPreserved<GlobalsAAWrapperPass>();
     }
 
 
     // Helper functions of redundant load elimination 
     bool processLoad(LoadInst *L);
     bool processNonLocalLoad(LoadInst *L);
     bool processAssumeIntrinsic(IntrinsicInst *II);
     void AnalyzeLoadAvailability(LoadInst *LI, LoadDepVect &Deps, 
FunctionPass *llvm::createGVNPass(bool NoLoads) {
   return new GVN(NoLoads);
 }
 
 INITIALIZE_PASS_BEGIN(GVN, "gvn", "Global Value Numbering", false, false)
 INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
 INITIALIZE_PASS_DEPENDENCY(MemoryDependenceAnalysis)
 INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(GlobalsAAWrapperPass)
 INITIALIZE_PASS_END(GVN, "gvn", "Global Value Numbering", false, false)
 
 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
 void GVN::dump(DenseMap<uint32_t, Value*>& d) {
   errs() << "{\n";
   for (DenseMap<uint32_t, Value*>::iterator I = d.begin(),
        E = d.end(); I != E; ++I) {
       errs() << I->first << "\n";
bool GVN::runOnFunction(Function& F) {
   if (skipOptnoneFunction(F))
     return false;
 
   if (!NoLoads)
     MD = &getAnalysis<MemoryDependenceAnalysis>();
   DT = &getAnalysis<DominatorTreeWrapperPass>().getDomTree();
   AC = &getAnalysis<AssumptionCacheTracker>().getAssumptionCache(F);
   TLI = &getAnalysis<TargetLibraryInfoWrapperPass>().getTLI();
-  VN.setAliasAnalysis(&getAnalysis<AliasAnalysis>());
+  VN.setAliasAnalysis(&getAnalysis<AAResultsWrapperPass>().getAAResults());
   VN.setMemDep(MD);
   VN.setDomTree(DT);
 
   bool Changed = false;
   bool ShouldContinue = true;
 
   // Merge unconditional branches, allowing PRE to catch more
   // optimization opportunities.

llvm/trunk/lib/Transforms/Scalar/IndVarSimplify.cpp

 
 #include "llvm/Transforms/Scalar.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Analysis/LoopInfo.h"
 #include "llvm/Analysis/LoopPass.h"
 #include "llvm/Analysis/ScalarEvolutionExpander.h"
+#include "llvm/Analysis/ScalarEvolutionAliasAnalysis.h"
 #include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/Analysis/TargetTransformInfo.h"
 #include "llvm/IR/BasicBlock.h"
 #include "llvm/IR/CFG.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/Dominators.h"
 #include "llvm/IR/Instructions.h"

llvm/trunk/lib/Transforms/Scalar/LICM.cpp

 //     the SSAUpdater to construct the appropriate SSA form for the value.
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Transforms/Scalar.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/Analysis/AliasSetTracker.h"
+#include "llvm/Analysis/BasicAliasAnalysis.h"
 #include "llvm/Analysis/ConstantFolding.h"
+#include "llvm/Analysis/GlobalsModRef.h"
 #include "llvm/Analysis/LoopInfo.h"
 #include "llvm/Analysis/LoopPass.h"
 #include "llvm/Analysis/ScalarEvolution.h"
+#include "llvm/Analysis/ScalarEvolutionAliasAnalysis.h"
 #include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/Analysis/ValueTracking.h"
 #include "llvm/IR/CFG.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/Dominators.h"
 #include "llvm/IR/Instructions.h"
struct LICM : public LoopPass {
     void getAnalysisUsage(AnalysisUsage &AU) const override {
       AU.setPreservesCFG();
       AU.addRequired<DominatorTreeWrapperPass>();
       AU.addRequired<LoopInfoWrapperPass>();
       AU.addRequiredID(LoopSimplifyID);
       AU.addPreservedID(LoopSimplifyID);
       AU.addRequiredID(LCSSAID);
       AU.addPreservedID(LCSSAID);
-      AU.addRequired<AliasAnalysis>();
-      AU.addPreserved<AliasAnalysis>();
+      AU.addRequired<AAResultsWrapperPass>();
+      AU.addPreserved<AAResultsWrapperPass>();
+      AU.addPreserved<BasicAAWrapperPass>();
+      AU.addPreserved<GlobalsAAWrapperPass>();
       AU.addPreserved<ScalarEvolutionWrapperPass>();
+      AU.addPreserved<SCEVAAWrapperPass>();
       AU.addRequired<TargetLibraryInfoWrapperPass>();
     }
 
     using llvm::Pass::doFinalization;
 
     bool doFinalization() override {
       assert(LoopToAliasSetMap.empty() && "Didn't free loop alias sets");
       return false;

 char LICM::ID = 0;
 INITIALIZE_PASS_BEGIN(LICM, "licm", "Loop Invariant Code Motion", false, false)
 INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(LoopInfoWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(LoopSimplify)
 INITIALIZE_PASS_DEPENDENCY(LCSSA)
 INITIALIZE_PASS_DEPENDENCY(ScalarEvolutionWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(BasicAAWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(GlobalsAAWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(SCEVAAWrapperPass)
 INITIALIZE_PASS_END(LICM, "licm", "Loop Invariant Code Motion", false, false)
 
 Pass *llvm::createLICMPass() { return new LICM(); }
 
 /// Hoist expressions out of the specified loop. Note, alias info for inner
 /// loop is not preserved so it is not a good idea to run LICM multiple
 /// times on one loop.
 ///
 bool LICM::runOnLoop(Loop *L, LPPassManager &LPM) {
   if (skipOptnoneFunction(L))
     return false;
 
   Changed = false;
 
   // Get our Loop and Alias Analysis information...
   LI = &getAnalysis<LoopInfoWrapperPass>().getLoopInfo();
-  AA = &getAnalysis<AliasAnalysis>();
+  AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
   DT = &getAnalysis<DominatorTreeWrapperPass>().getDomTree();
 
   TLI = &getAnalysis<TargetLibraryInfoWrapperPass>().getTLI();
 
   assert(L->isLCSSAForm(*DT) && "Loop is not in LCSSA form.");
 
   CurAST = new AliasSetTracker(*AA);
   // Collect Alias info from subloops.

llvm/trunk/lib/Transforms/Scalar/LoadCombine.cpp

 ///
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Transforms/Scalar.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/Analysis/AliasSetTracker.h"
+#include "llvm/Analysis/GlobalsModRef.h"
 #include "llvm/Analysis/TargetFolder.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/Module.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/Debug.h"
bool LoadCombine::combineLoads(SmallVectorImpl<LoadPOPPair> &Loads) {
   NumLoadsCombined = NumLoadsCombined + Loads.size();
   return true;
 }
 
 bool LoadCombine::runOnBasicBlock(BasicBlock &BB) {
   if (skipOptnoneFunction(BB))
     return false;
 
-  AA = &getAnalysis<AliasAnalysis>();
+  AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
 
   IRBuilder<true, TargetFolder> TheBuilder(
       BB.getContext(), TargetFolder(BB.getModule()->getDataLayout()));
   Builder = &TheBuilder;
 
   DenseMap<const Value *, SmallVector<LoadPOPPair, 8>> LoadMap;
   AliasSetTracker AST(*AA);
 
bool LoadCombine::runOnBasicBlock(BasicBlock &BB) {
   if (combineLoads(LoadMap))
     Combined = true;
   return Combined;
 }
 
 void LoadCombine::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.setPreservesCFG();
 
-  AU.addRequired<AliasAnalysis>();
-  AU.addPreserved<AliasAnalysis>();
+  AU.addRequired<AAResultsWrapperPass>();
+  AU.addPreserved<GlobalsAAWrapperPass>();
 }
 
 char LoadCombine::ID = 0;
 
 BasicBlockPass *llvm::createLoadCombinePass() {
   return new LoadCombine();
 }
 
 INITIALIZE_PASS_BEGIN(LoadCombine, "load-combine", "Combine Adjacent Loads",
                       false, false)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(GlobalsAAWrapperPass)
 INITIALIZE_PASS_END(LoadCombine, "load-combine", "Combine Adjacent Loads",
                     false, false)
 

llvm/trunk/lib/Transforms/Scalar/LoopIdiomRecognize.cpp

 // This could recognize common matrix multiplies and dot product idioms and
 // replace them with calls to BLAS (if linked in??).
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Transforms/Scalar.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Analysis/AliasAnalysis.h"
+#include "llvm/Analysis/BasicAliasAnalysis.h"
+#include "llvm/Analysis/GlobalsModRef.h"
 #include "llvm/Analysis/LoopPass.h"
 #include "llvm/Analysis/ScalarEvolutionExpander.h"
+#include "llvm/Analysis/ScalarEvolutionAliasAnalysis.h"
 #include "llvm/Analysis/ScalarEvolutionExpressions.h"
 #include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/Analysis/TargetTransformInfo.h"
 #include "llvm/Analysis/ValueTracking.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/Dominators.h"
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/IntrinsicInst.h"
public:
   ///
   void getAnalysisUsage(AnalysisUsage &AU) const override {
     AU.addRequired<LoopInfoWrapperPass>();
     AU.addPreserved<LoopInfoWrapperPass>();
     AU.addRequiredID(LoopSimplifyID);
     AU.addPreservedID(LoopSimplifyID);
     AU.addRequiredID(LCSSAID);
     AU.addPreservedID(LCSSAID);
-    AU.addRequired<AliasAnalysis>();
-    AU.addPreserved<AliasAnalysis>();
+    AU.addRequired<AAResultsWrapperPass>();
+    AU.addPreserved<AAResultsWrapperPass>();
     AU.addRequired<ScalarEvolutionWrapperPass>();
     AU.addPreserved<ScalarEvolutionWrapperPass>();
-    AU.addPreserved<DominatorTreeWrapperPass>();
+    AU.addPreserved<SCEVAAWrapperPass>();
     AU.addRequired<DominatorTreeWrapperPass>();
+    AU.addPreserved<DominatorTreeWrapperPass>();
     AU.addRequired<TargetLibraryInfoWrapperPass>();
     AU.addRequired<TargetTransformInfoWrapperPass>();
+    AU.addPreserved<BasicAAWrapperPass>();
+    AU.addPreserved<GlobalsAAWrapperPass>();
   }
 
 private:
   /// \name Countable Loop Idiom Handling
   /// @{
 
   bool runOnCountableLoop();
   bool runOnLoopBlock(BasicBlock *BB, const SCEV *BECount,

 INITIALIZE_PASS_BEGIN(LoopIdiomRecognize, "loop-idiom", "Recognize loop idioms",
                       false, false)
 INITIALIZE_PASS_DEPENDENCY(LoopInfoWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(LoopSimplify)
 INITIALIZE_PASS_DEPENDENCY(LCSSA)
 INITIALIZE_PASS_DEPENDENCY(ScalarEvolutionWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(BasicAAWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(GlobalsAAWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(SCEVAAWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(TargetTransformInfoWrapperPass)
 INITIALIZE_PASS_END(LoopIdiomRecognize, "loop-idiom", "Recognize loop idioms",
                     false, false)
 
 Pass *llvm::createLoopIdiomPass() { return new LoopIdiomRecognize(); }
 
 /// deleteDeadInstruction - Delete this instruction.  Before we do, go through
 /// and zero out all the operands of this instruction.  If any of them become
bool LoopIdiomRecognize::runOnLoop(Loop *L, LPPassManager &LPM) {
   if (!L->getLoopPreheader())
     return false;
 
   // Disable loop idiom recognition if the function's name is a common idiom.
   StringRef Name = L->getHeader()->getParent()->getName();
   if (Name == "memset" || Name == "memcpy")
     return false;
 
-  AA = &getAnalysis<AliasAnalysis>();
+  AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
   DT = &getAnalysis<DominatorTreeWrapperPass>().getDomTree();
   LI = &getAnalysis<LoopInfoWrapperPass>().getLoopInfo();
   SE = &getAnalysis<ScalarEvolutionWrapperPass>().getSE();
   TLI = &getAnalysis<TargetLibraryInfoWrapperPass>().getTLI();
   TTI = &getAnalysis<TargetTransformInfoWrapperPass>().getTTI(
       *CurLoop->getHeader()->getParent());
 
   if (SE->hasLoopInvariantBackedgeTakenCount(L))

llvm/trunk/lib/Transforms/Scalar/LoopInterchange.cpp

struct LoopInterchange : public FunctionPass {
   DominatorTree *DT;
   LoopInterchange()
       : FunctionPass(ID), SE(nullptr), LI(nullptr), DA(nullptr), DT(nullptr) {
     initializeLoopInterchangePass(*PassRegistry::getPassRegistry());
   }
 
   void getAnalysisUsage(AnalysisUsage &AU) const override {
     AU.addRequired<ScalarEvolutionWrapperPass>();
-    AU.addRequired<AliasAnalysis>();
+    AU.addRequired<AAResultsWrapperPass>();
     AU.addRequired<DominatorTreeWrapperPass>();
     AU.addRequired<LoopInfoWrapperPass>();
     AU.addRequired<DependenceAnalysis>();
     AU.addRequiredID(LoopSimplifyID);
     AU.addRequiredID(LCSSAID);
   }
 
   bool runOnFunction(Function &F) override {
bool LoopInterchangeTransform::adjustLoopLinks() {
   if (Changed)
     adjustLoopPreheaders();
   return Changed;
 }
 
 char LoopInterchange::ID = 0;
 INITIALIZE_PASS_BEGIN(LoopInterchange, "loop-interchange",
                       "Interchanges loops for cache reuse", false, false)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(DependenceAnalysis)
 INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(ScalarEvolutionWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(LoopSimplify)
 INITIALIZE_PASS_DEPENDENCY(LCSSA)
 INITIALIZE_PASS_DEPENDENCY(LoopInfoWrapperPass)
 
 INITIALIZE_PASS_END(LoopInterchange, "loop-interchange",
                     "Interchanges loops for cache reuse", false, false)
 
 Pass *llvm::createLoopInterchangePass() { return new LoopInterchange(); }

llvm/trunk/lib/Transforms/Scalar/LoopRerollPass.cpp

public:
     static char ID; // Pass ID, replacement for typeid
     LoopReroll() : LoopPass(ID) {
       initializeLoopRerollPass(*PassRegistry::getPassRegistry());
     }
 
     bool runOnLoop(Loop *L, LPPassManager &LPM) override;
 
     void getAnalysisUsage(AnalysisUsage &AU) const override {
-      AU.addRequired<AliasAnalysis>();
+      AU.addRequired<AAResultsWrapperPass>();
       AU.addRequired<LoopInfoWrapperPass>();
       AU.addPreserved<LoopInfoWrapperPass>();
       AU.addRequired<DominatorTreeWrapperPass>();
       AU.addPreserved<DominatorTreeWrapperPass>();
       AU.addRequired<ScalarEvolutionWrapperPass>();
       AU.addRequired<TargetLibraryInfoWrapperPass>();
     }
 
void collectPossibleReductions(Loop *L,
            ReductionTracker &Reductions);
     bool reroll(Instruction *IV, Loop *L, BasicBlock *Header, const SCEV *IterCount,
                 ReductionTracker &Reductions);
   };
 }
 
 char LoopReroll::ID = 0;
 INITIALIZE_PASS_BEGIN(LoopReroll, "loop-reroll", "Reroll loops", false, false)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(LoopInfoWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(ScalarEvolutionWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
 INITIALIZE_PASS_END(LoopReroll, "loop-reroll", "Reroll loops", false, false)
 
 Pass *llvm::createLoopRerollPass() {
   return new LoopReroll;
bool LoopReroll::reroll(Instruction *IV, Loop *L, BasicBlock *Header,
   ++NumRerolledLoops;
   return true;
 }
 
 bool LoopReroll::runOnLoop(Loop *L, LPPassManager &LPM) {
   if (skipOptnoneFunction(L))
     return false;
 
-  AA = &getAnalysis<AliasAnalysis>();
+  AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
   LI = &getAnalysis<LoopInfoWrapperPass>().getLoopInfo();
   SE = &getAnalysis<ScalarEvolutionWrapperPass>().getSE();
   TLI = &getAnalysis<TargetLibraryInfoWrapperPass>().getTLI();
   DT = &getAnalysis<DominatorTreeWrapperPass>().getDomTree();
 
   BasicBlock *Header = L->getHeader();
   DEBUG(dbgs() << "LRR: F[" << Header->getParent()->getName() <<
         "] Loop %" << Header->getName() << " (" <<

llvm/trunk/lib/Transforms/Scalar/LoopRotation.cpp

 //===- LoopRotation.cpp - Loop Rotation Pass ------------------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file implements Loop Rotation Pass.
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Transforms/Scalar.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Analysis/AliasAnalysis.h"
+#include "llvm/Analysis/BasicAliasAnalysis.h"
 #include "llvm/Analysis/AssumptionCache.h"
 #include "llvm/Analysis/CodeMetrics.h"
 #include "llvm/Analysis/InstructionSimplify.h"
+#include "llvm/Analysis/GlobalsModRef.h"
 #include "llvm/Analysis/LoopPass.h"
 #include "llvm/Analysis/ScalarEvolution.h"
+#include "llvm/Analysis/ScalarEvolutionAliasAnalysis.h"
 #include "llvm/Analysis/TargetTransformInfo.h"
 #include "llvm/Analysis/ValueTracking.h"
 #include "llvm/IR/CFG.h"
 #include "llvm/IR/Dominators.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/IntrinsicInst.h"
 #include "llvm/IR/Module.h"
 #include "llvm/Support/CommandLine.h"
LoopRotate(int SpecifiedMaxHeaderSize = -1) : LoopPass(ID) {
       if (SpecifiedMaxHeaderSize == -1)
         MaxHeaderSize = DefaultRotationThreshold;
       else
         MaxHeaderSize = unsigned(SpecifiedMaxHeaderSize);
     }
 
     // LCSSA form makes instruction renaming easier.
     void getAnalysisUsage(AnalysisUsage &AU) const override {
-      AU.addPreserved<AliasAnalysis>();
+      AU.addPreserved<AAResultsWrapperPass>();
       AU.addRequired<AssumptionCacheTracker>();
       AU.addPreserved<DominatorTreeWrapperPass>();
       AU.addRequired<LoopInfoWrapperPass>();
       AU.addPreserved<LoopInfoWrapperPass>();
       AU.addRequiredID(LoopSimplifyID);
       AU.addPreservedID(LoopSimplifyID);
       AU.addRequiredID(LCSSAID);
       AU.addPreservedID(LCSSAID);
       AU.addPreserved<ScalarEvolutionWrapperPass>();
+      AU.addPreserved<SCEVAAWrapperPass>();
       AU.addRequired<TargetTransformInfoWrapperPass>();
+      AU.addPreserved<BasicAAWrapperPass>();
+      AU.addPreserved<GlobalsAAWrapperPass>();
     }
 
     bool runOnLoop(Loop *L, LPPassManager &LPM) override;
     bool simplifyLoopLatch(Loop *L);
     bool rotateLoop(Loop *L, bool SimplifiedLatch);
 
   private:
     unsigned MaxHeaderSize;
     LoopInfo *LI;
     const TargetTransformInfo *TTI;
     AssumptionCache *AC;
     DominatorTree *DT;
   };
 }
 
 char LoopRotate::ID = 0;
 INITIALIZE_PASS_BEGIN(LoopRotate, "loop-rotate", "Rotate Loops", false, false)
 INITIALIZE_PASS_DEPENDENCY(TargetTransformInfoWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
 INITIALIZE_PASS_DEPENDENCY(LoopInfoWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(LoopSimplify)
 INITIALIZE_PASS_DEPENDENCY(LCSSA)
+INITIALIZE_PASS_DEPENDENCY(SCEVAAWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(BasicAAWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(GlobalsAAWrapperPass)
 INITIALIZE_PASS_END(LoopRotate, "loop-rotate", "Rotate Loops", false, false)
 
 Pass *llvm::createLoopRotatePass(int MaxHeaderSize) {
   return new LoopRotate(MaxHeaderSize);
 }
 
 /// Rotate Loop L as many times as possible. Return true if
 /// the loop is rotated at least once.

llvm/trunk/lib/Transforms/Scalar/MemCpyOptimizer.cpp

 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Transforms/Scalar.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/Analysis/AssumptionCache.h"
+#include "llvm/Analysis/GlobalsModRef.h"
 #include "llvm/Analysis/MemoryDependenceAnalysis.h"
 #include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/Analysis/ValueTracking.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/Dominators.h"
 #include "llvm/IR/GetElementPtrTypeIterator.h"
 #include "llvm/IR/GlobalVariable.h"
 #include "llvm/IR/IRBuilder.h"
namespace {
 
   private:
     // This transformation requires dominator postdominator info
     void getAnalysisUsage(AnalysisUsage &AU) const override {
       AU.setPreservesCFG();
       AU.addRequired<AssumptionCacheTracker>();
       AU.addRequired<DominatorTreeWrapperPass>();
       AU.addRequired<MemoryDependenceAnalysis>();
-      AU.addRequired<AliasAnalysis>();
+      AU.addRequired<AAResultsWrapperPass>();
       AU.addRequired<TargetLibraryInfoWrapperPass>();
-      AU.addPreserved<AliasAnalysis>();
+      AU.addPreserved<GlobalsAAWrapperPass>();
       AU.addPreserved<MemoryDependenceAnalysis>();
     }
 
     // Helper functions
     bool processStore(StoreInst *SI, BasicBlock::iterator &BBI);
     bool processMemSet(MemSetInst *SI, BasicBlock::iterator &BBI);
     bool processMemCpy(MemCpyInst *M);
     bool processMemMove(MemMoveInst *M);

 FunctionPass *llvm::createMemCpyOptPass() { return new MemCpyOpt(); }
 
 INITIALIZE_PASS_BEGIN(MemCpyOpt, "memcpyopt", "MemCpy Optimization",
                       false, false)
 INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
 INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(MemoryDependenceAnalysis)
 INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(GlobalsAAWrapperPass)
 INITIALIZE_PASS_END(MemCpyOpt, "memcpyopt", "MemCpy Optimization",
                     false, false)
 
 /// When scanning forward over instructions, we look for some other patterns to
 /// fold away. In particular, this looks for stores to neighboring locations of
 /// memory. If it sees enough consecutive ones, it attempts to merge them
 /// together into a memcpy/memset.
 Instruction *MemCpyOpt::tryMergingIntoMemset(Instruction *StartInst,
if (LI->isSimple() && LI->hasOneUse() &&
       MemDepResult ldep = MD->getDependency(LI);
       CallInst *C = nullptr;
       if (ldep.isClobber() && !isa<MemCpyInst>(ldep.getInst()))
         C = dyn_cast<CallInst>(ldep.getInst());
 
       if (C) {
         // Check that nothing touches the dest of the "copy" between
         // the call and the store.
-        AliasAnalysis &AA = getAnalysis<AliasAnalysis>();
+        AliasAnalysis &AA = getAnalysis<AAResultsWrapperPass>().getAAResults();
         MemoryLocation StoreLoc = MemoryLocation::get(SI);
         for (BasicBlock::iterator I = --BasicBlock::iterator(SI),
                                   E = C; I != E; --I) {
           if (AA.getModRefInfo(&*I, StoreLoc) != MRI_NoModRef) {
             C = nullptr;
             break;
           }
         }
bool MemCpyOpt::performCallSlotOptzn(Instruction *cpy,
   if (Instruction *cpyDestInst = dyn_cast<Instruction>(cpyDest))
     if (!DT.dominates(cpyDestInst, C))
       return false;
 
   // In addition to knowing that the call does not access src in some
   // unexpected manner, for example via a global, which we deduce from
   // the use analysis, we also need to know that it does not sneakily
   // access dest.  We rely on AA to figure this out for us.
-  AliasAnalysis &AA = getAnalysis<AliasAnalysis>();
+  AliasAnalysis &AA = getAnalysis<AAResultsWrapperPass>().getAAResults();
   ModRefInfo MR = AA.getModRefInfo(C, cpyDest, srcSize);
   // If necessary, perform additional analysis.
   if (MR != MRI_NoModRef)
     MR = AA.callCapturesBefore(C, cpyDest, srcSize, &DT);
   if (MR != MRI_NoModRef)
     return false;
 
   // All the checks have passed, so do the transformation.
bool MemCpyOpt::processMemCpyMemCpyDependence(MemCpyInst *M, MemCpyInst *MDep) {
 
   // Second, the length of the memcpy's must be the same, or the preceding one
   // must be larger than the following one.
   ConstantInt *MDepLen = dyn_cast<ConstantInt>(MDep->getLength());
   ConstantInt *MLen = dyn_cast<ConstantInt>(M->getLength());
   if (!MDepLen || !MLen || MDepLen->getZExtValue() < MLen->getZExtValue())
     return false;
 
-  AliasAnalysis &AA = getAnalysis<AliasAnalysis>();
+  AliasAnalysis &AA = getAnalysis<AAResultsWrapperPass>().getAAResults();
 
   // Verify that the copied-from memory doesn't change in between the two
   // transfers.  For example, in:
   //    memcpy(a <- b)
   //    *b = 42;
   //    memcpy(c <- a)
   // It would be invalid to transform the second memcpy into memcpy(c <- b).
   //
if (MemSetInst *MDep = dyn_cast<MemSetInst>(SrcDepInfo.getInst()))
       }
 
   return false;
 }
 
 /// Transforms memmove calls to memcpy calls when the src/dst are guaranteed
 /// not to alias.
 bool MemCpyOpt::processMemMove(MemMoveInst *M) {
-  AliasAnalysis &AA = getAnalysis<AliasAnalysis>();
+  AliasAnalysis &AA = getAnalysis<AAResultsWrapperPass>().getAAResults();
 
   if (!TLI->has(LibFunc::memmove))
     return false;
 
   // See if the pointers alias.
   if (!AA.isNoAlias(MemoryLocation::getForDest(M),
                     MemoryLocation::getForSource(M)))
     return false;

llvm/trunk/lib/Transforms/Scalar/MergedLoadStoreMotion.cpp

 //===----------------------------------------------------------------------===//
 
 #include "llvm/Transforms/Scalar.h"
 #include "llvm/ADT/SetVector.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/Analysis/CFG.h"
+#include "llvm/Analysis/GlobalsModRef.h"
 #include "llvm/Analysis/Loads.h"
 #include "llvm/Analysis/MemoryBuiltins.h"
 #include "llvm/Analysis/MemoryDependenceAnalysis.h"
 #include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/IR/Metadata.h"
 #include "llvm/IR/PatternMatch.h"
 #include "llvm/Support/Allocator.h"
 #include "llvm/Support/CommandLine.h"
public:
   }
 
   bool runOnFunction(Function &F) override;
 
 private:
   // This transformation requires dominator postdominator info
   void getAnalysisUsage(AnalysisUsage &AU) const override {
     AU.addRequired<TargetLibraryInfoWrapperPass>();
-    AU.addRequired<AliasAnalysis>();
+    AU.addRequired<AAResultsWrapperPass>();
+    AU.addPreserved<GlobalsAAWrapperPass>();
     AU.addPreserved<MemoryDependenceAnalysis>();
-    AU.addPreserved<AliasAnalysis>();
   }
 
   // Helper routines
 
   ///
   /// \brief Remove instruction from parent and update memory dependence
   /// analysis.
   ///

 FunctionPass *llvm::createMergedLoadStoreMotionPass() {
   return new MergedLoadStoreMotion();
 }
 
 INITIALIZE_PASS_BEGIN(MergedLoadStoreMotion, "mldst-motion",
                       "MergedLoadStoreMotion", false, false)
 INITIALIZE_PASS_DEPENDENCY(MemoryDependenceAnalysis)
 INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(GlobalsAAWrapperPass)
 INITIALIZE_PASS_END(MergedLoadStoreMotion, "mldst-motion",
                     "MergedLoadStoreMotion", false, false)
 
 ///
 /// \brief Remove instruction from parent and update memory dependence analysis.
 ///
 void MergedLoadStoreMotion::removeInstruction(Instruction *Inst) {
   // Notify the memory dependence analysis.
bool MergedLoadStoreMotion::mergeStores(BasicBlock *T) {
   }
   return MergedStores;
 }
 ///
 /// \brief Run the transformation for each function
 ///
 bool MergedLoadStoreMotion::runOnFunction(Function &F) {
   MD = getAnalysisIfAvailable<MemoryDependenceAnalysis>();
-  AA = &getAnalysis<AliasAnalysis>();
+  AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
 
   bool Changed = false;
   DEBUG(dbgs() << "Instruction Merger\n");
 
   // Merge unconditional branches, allowing PRE to catch more
   // optimization opportunities.
   for (Function::iterator FI = F.begin(), FE = F.end(); FI != FE;) {
     BasicBlock *BB = FI++;

llvm/trunk/lib/Transforms/Scalar/Scalar.cpp

void LLVMAddCorrelatedValuePropagationPass(LLVMPassManagerRef PM) {
   unwrap(PM)->add(createCorrelatedValuePropagationPass());
 }
 
 void LLVMAddEarlyCSEPass(LLVMPassManagerRef PM) {
   unwrap(PM)->add(createEarlyCSEPass());
 }
 
 void LLVMAddTypeBasedAliasAnalysisPass(LLVMPassManagerRef PM) {
-  unwrap(PM)->add(createTypeBasedAliasAnalysisPass());
+  unwrap(PM)->add(createTypeBasedAAWrapperPass());
 }
 
 void LLVMAddScopedNoAliasAAPass(LLVMPassManagerRef PM) {
-  unwrap(PM)->add(createScopedNoAliasAAPass());
+  unwrap(PM)->add(createScopedNoAliasAAWrapperPass());
 }
 
 void LLVMAddBasicAliasAnalysisPass(LLVMPassManagerRef PM) {
-  unwrap(PM)->add(createBasicAliasAnalysisPass());
+  unwrap(PM)->add(createBasicAAWrapperPass());
 }
 
 void LLVMAddLowerExpectIntrinsicPass(LLVMPassManagerRef PM) {
   unwrap(PM)->add(createLowerExpectIntrinsicPass());
 }

llvm/trunk/lib/Transforms/Scalar/Sink.cpp

Sinking() : FunctionPass(ID) {
       initializeSinkingPass(*PassRegistry::getPassRegistry());
     }
 
     bool runOnFunction(Function &F) override;
 
     void getAnalysisUsage(AnalysisUsage &AU) const override {
       AU.setPreservesCFG();
       FunctionPass::getAnalysisUsage(AU);
-      AU.addRequired<AliasAnalysis>();
+      AU.addRequired<AAResultsWrapperPass>();
       AU.addRequired<DominatorTreeWrapperPass>();
       AU.addRequired<LoopInfoWrapperPass>();
       AU.addPreserved<DominatorTreeWrapperPass>();
       AU.addPreserved<LoopInfoWrapperPass>();
     }
   private:
     bool ProcessBlock(BasicBlock &BB);
     bool SinkInstruction(Instruction *I, SmallPtrSetImpl<Instruction*> &Stores);
     bool AllUsesDominatedByBlock(Instruction *Inst, BasicBlock *BB) const;
     bool IsAcceptableTarget(Instruction *Inst, BasicBlock *SuccToSinkTo) const;
   };
 } // end anonymous namespace
 
 char Sinking::ID = 0;
 INITIALIZE_PASS_BEGIN(Sinking, "sink", "Code sinking", false, false)
 INITIALIZE_PASS_DEPENDENCY(LoopInfoWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_END(Sinking, "sink", "Code sinking", false, false)
 
 FunctionPass *llvm::createSinkingPass() { return new Sinking(); }
 
 /// AllUsesDominatedByBlock - Return true if all uses of the specified value
 /// occur in blocks dominated by the specified block.
 bool Sinking::AllUsesDominatedByBlock(Instruction *Inst,
                                       BasicBlock *BB) const {
if (!DT->dominates(BB, UseBlock))
       return false;
   }
   return true;
 }
 
 bool Sinking::runOnFunction(Function &F) {
   DT = &getAnalysis<DominatorTreeWrapperPass>().getDomTree();
   LI = &getAnalysis<LoopInfoWrapperPass>().getLoopInfo();
-  AA = &getAnalysis<AliasAnalysis>();
+  AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
 
   bool MadeChange, EverMadeChange = false;
 
   do {
     MadeChange = false;
     DEBUG(dbgs() << "Sinking iteration " << NumSinkIter << "\n");
     // Process all basic blocks.
     for (Function::iterator I = F.begin(), E = F.end();

llvm/trunk/lib/Transforms/Utils/InlineFunction.cpp

EnableNoAliasConversion("enable-noalias-to-md-conversion", cl::init(true),
   cl::desc("Convert noalias attributes to metadata during inlining."));
 
 static cl::opt<bool>
 PreserveAlignmentAssumptions("preserve-alignment-assumptions-during-inlining",
   cl::init(true), cl::Hidden,
   cl::desc("Convert align attributes to assumptions during inlining."));
 
 bool llvm::InlineFunction(CallInst *CI, InlineFunctionInfo &IFI,
-                          bool InsertLifetime) {
-  return InlineFunction(CallSite(CI), IFI, InsertLifetime);
+                          AAResults *CalleeAAR, bool InsertLifetime) {
+  return InlineFunction(CallSite(CI), IFI, CalleeAAR, InsertLifetime);
 }
 bool llvm::InlineFunction(InvokeInst *II, InlineFunctionInfo &IFI,
-                          bool InsertLifetime) {
-  return InlineFunction(CallSite(II), IFI, InsertLifetime);
+                          AAResults *CalleeAAR, bool InsertLifetime) {
+  return InlineFunction(CallSite(II), IFI, CalleeAAR, InsertLifetime);
 }
 
 namespace {
   /// A class for recording information about inlining a landing pad.
   class LandingPadInliningInfo {
     BasicBlock *OuterResumeDest; ///< Destination of the invoke's unwind.
     BasicBlock *InnerResumeDest; ///< Destination for the callee's resume.
     LandingPadInst *CallerLPad;  ///< LandingPadInst associated with the invoke.
static void CloneAliasScopeMetadata(CallSite CS, ValueToValueMapTy &VMap) {
   }
 }
 
 /// If the inlined function has noalias arguments,
 /// then add new alias scopes for each noalias argument, tag the mapped noalias
 /// parameters with noalias metadata specifying the new scope, and tag all
 /// non-derived loads, stores and memory intrinsics with the new alias scopes.
 static void AddAliasScopeMetadata(CallSite CS, ValueToValueMapTy &VMap,
-                                  const DataLayout &DL, AliasAnalysis *AA) {
+                                  const DataLayout &DL, AAResults *CalleeAAR) {
   if (!EnableNoAliasConversion)
     return;
 
   const Function *CalledFunc = CS.getCalledFunction();
   SmallVector<const Argument *, 4> NoAliasArgs;
 
   for (Function::const_arg_iterator I = CalledFunc->arg_begin(),
        E = CalledFunc->arg_end(); I != E; ++I) {
if (const Instruction *I = dyn_cast<Instruction>(VMI->first)) {
       else if (ImmutableCallSite ICS = ImmutableCallSite(I)) {
         // If we know that the call does not access memory, then we'll still
         // know that about the inlined clone of this call site, and we don't
         // need to add metadata.
         if (ICS.doesNotAccessMemory())
           continue;
 
         IsFuncCall = true;
-        if (AA) {
-          FunctionModRefBehavior MRB = AA->getModRefBehavior(ICS);
+        if (CalleeAAR) {
+          FunctionModRefBehavior MRB = CalleeAAR->getModRefBehavior(ICS);
           if (MRB == FMRB_OnlyAccessesArgumentPointees ||
               MRB == FMRB_OnlyReadsArgumentPointees)
             IsArgMemOnlyCall = true;
         }
 
         for (ImmutableCallSite::arg_iterator AI = ICS.arg_begin(),
              AE = ICS.arg_end(); AI != AE; ++AI) {
           // We need to check the underlying objects of all arguments, not just

 /// caller. This returns false if it is not possible to inline this call.
 /// The program is still in a well defined state if this occurs though.
 ///
 /// Note that this only does one level of inlining.  For example, if the
 /// instruction 'call B' is inlined, and 'B' calls 'C', then the call to 'C' now
 /// exists in the instruction stream.  Similarly this will inline a recursive
 /// function by one level.
 bool llvm::InlineFunction(CallSite CS, InlineFunctionInfo &IFI,
-                          bool InsertLifetime) {
+                          AAResults *CalleeAAR, bool InsertLifetime) {
   Instruction *TheCall = CS.getInstruction();
   assert(TheCall->getParent() && TheCall->getParent()->getParent() &&
          "Instruction not in function!");
 
   // If IFI has any state in it, zap it before we fill it in.
   IFI.reset();
   
   const Function *CalledFunc = CS.getCalledFunction();
Function::iterator FirstNewBlock;
 
     // Update inlined instructions' line number information.
     fixupLineNumbers(Caller, FirstNewBlock, TheCall);
 
     // Clone existing noalias metadata if necessary.
     CloneAliasScopeMetadata(CS, VMap);
 
     // Add noalias metadata if necessary.
-    AddAliasScopeMetadata(CS, VMap, DL, IFI.AA);
+    AddAliasScopeMetadata(CS, VMap, DL, CalleeAAR);
 
     // FIXME: We could register any cloned assumptions instead of clearing the
     // whole function's cache.
     if (IFI.ACT)
       IFI.ACT->getAssumptionCache(*Caller).clear();
   }
 
   // If there are any alloca instructions in the block that used to be the entry

llvm/trunk/lib/Transforms/Utils/LCSSA.cpp

 // LoopUnswitching, simpler.
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Transforms/Scalar.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Analysis/AliasAnalysis.h"
+#include "llvm/Analysis/GlobalsModRef.h"
 #include "llvm/Analysis/LoopPass.h"
 #include "llvm/Analysis/ScalarEvolution.h"
+#include "llvm/Analysis/ScalarEvolutionAliasAnalysis.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/Dominators.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/PredIteratorCache.h"
 #include "llvm/Pass.h"
 #include "llvm/Transforms/Utils/LoopUtils.h"
 #include "llvm/Transforms/Utils/SSAUpdater.h"
struct LCSSA : public FunctionPass {
   /// loop preheaders be inserted into the CFG.  It maintains both of these,
   /// as well as the CFG.  It also requires dominator information.
   void getAnalysisUsage(AnalysisUsage &AU) const override {
     AU.setPreservesCFG();
 
     AU.addRequired<DominatorTreeWrapperPass>();
     AU.addRequired<LoopInfoWrapperPass>();
     AU.addPreservedID(LoopSimplifyID);
-    AU.addPreserved<AliasAnalysis>();
+    AU.addPreserved<AAResultsWrapperPass>();
+    AU.addPreserved<GlobalsAAWrapperPass>();
     AU.addPreserved<ScalarEvolutionWrapperPass>();
+    AU.addPreserved<SCEVAAWrapperPass>();
   }
 };
 }
 
 char LCSSA::ID = 0;
 INITIALIZE_PASS_BEGIN(LCSSA, "lcssa", "Loop-Closed SSA Form Pass", false, false)
 INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(LoopInfoWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(GlobalsAAWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(SCEVAAWrapperPass)
 INITIALIZE_PASS_END(LCSSA, "lcssa", "Loop-Closed SSA Form Pass", false, false)
 
 Pass *llvm::createLCSSAPass() { return new LCSSA(); }
 char &llvm::LCSSAID = LCSSA::ID;
 
 
 /// Process all loops in the function, inner-most out.
 bool LCSSA::runOnFunction(Function &F) {

llvm/trunk/lib/Transforms/Utils/LoopSimplify.cpp

 
 #include "llvm/Transforms/Scalar.h"
 #include "llvm/ADT/DepthFirstIterator.h"
 #include "llvm/ADT/SetOperations.h"
 #include "llvm/ADT/SetVector.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/Analysis/AliasAnalysis.h"
+#include "llvm/Analysis/BasicAliasAnalysis.h"
 #include "llvm/Analysis/AssumptionCache.h"
 #include "llvm/Analysis/DependenceAnalysis.h"
+#include "llvm/Analysis/GlobalsModRef.h"
 #include "llvm/Analysis/InstructionSimplify.h"
 #include "llvm/Analysis/LoopInfo.h"
 #include "llvm/Analysis/ScalarEvolution.h"
+#include "llvm/Analysis/ScalarEvolutionAliasAnalysis.h"
 #include "llvm/IR/CFG.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/Dominators.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/IntrinsicInst.h"
 #include "llvm/IR/LLVMContext.h"
void getAnalysisUsage(AnalysisUsage &AU) const override {
 
       // We need loop information to identify the loops...
       AU.addRequired<DominatorTreeWrapperPass>();
       AU.addPreserved<DominatorTreeWrapperPass>();
 
       AU.addRequired<LoopInfoWrapperPass>();
       AU.addPreserved<LoopInfoWrapperPass>();
 
-      AU.addPreserved<AliasAnalysis>();
+      AU.addPreserved<BasicAAWrapperPass>();
+      AU.addPreserved<AAResultsWrapperPass>();
+      AU.addPreserved<GlobalsAAWrapperPass>();
       AU.addPreserved<ScalarEvolutionWrapperPass>();
+      AU.addPreserved<SCEVAAWrapperPass>();
       AU.addPreserved<DependenceAnalysis>();
       AU.addPreservedID(BreakCriticalEdgesID);  // No critical edges added.
     }
 
     /// verifyAnalysis() - Verify LoopSimplifyForm's guarantees.
     void verifyAnalysis() const override;
   };
 }
 
 char LoopSimplify::ID = 0;
 INITIALIZE_PASS_BEGIN(LoopSimplify, "loop-simplify",
                 "Canonicalize natural loops", false, false)
 INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
 INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(LoopInfoWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(BasicAAWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(GlobalsAAWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(SCEVAAWrapperPass)
 INITIALIZE_PASS_END(LoopSimplify, "loop-simplify",
                 "Canonicalize natural loops", false, false)
 
 // Publicly exposed interface to pass...
 char &llvm::LoopSimplifyID = LoopSimplify::ID;
 Pass *llvm::createLoopSimplifyPass() { return new LoopSimplify(); }
 
 /// runOnFunction - Run down all loops in the CFG (recursively, but we could do

llvm/trunk/lib/Transforms/Vectorize/BBVectorize.cpp

 #include "llvm/ADT/DenseSet.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/SmallSet.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/Analysis/AliasSetTracker.h"
+#include "llvm/Analysis/GlobalsModRef.h"
 #include "llvm/Analysis/ScalarEvolution.h"
+#include "llvm/Analysis/ScalarEvolutionAliasAnalysis.h"
 #include "llvm/Analysis/ScalarEvolutionExpressions.h"
 #include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/Analysis/TargetTransformInfo.h"
 #include "llvm/Analysis/ValueTracking.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/Dominators.h"
struct BBVectorize : public BasicBlockPass {
 
     BBVectorize(const VectorizeConfig &C = VectorizeConfig())
       : BasicBlockPass(ID), Config(C) {
       initializeBBVectorizePass(*PassRegistry::getPassRegistry());
     }
 
     BBVectorize(Pass *P, Function &F, const VectorizeConfig &C)
       : BasicBlockPass(ID), Config(C) {
-      AA = &P->getAnalysis<AliasAnalysis>();
+      AA = &P->getAnalysis<AAResultsWrapperPass>().getAAResults();
       DT = &P->getAnalysis<DominatorTreeWrapperPass>().getDomTree();
       SE = &P->getAnalysis<ScalarEvolutionWrapperPass>().getSE();
       TLI = &P->getAnalysis<TargetLibraryInfoWrapperPass>().getTLI();
       TTI = IgnoreTargetInfo
                 ? nullptr
                 : &P->getAnalysis<TargetTransformInfoWrapperPass>().getTTI(F);
     }
 
bool vectorizeBB(BasicBlock &BB) {
 
       DEBUG(dbgs() << "BBV: done!\n");
       return changed;
     }
 
     bool runOnBasicBlock(BasicBlock &BB) override {
       // OptimizeNone check deferred to vectorizeBB().
 
-      AA = &getAnalysis<AliasAnalysis>();
+      AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
       DT = &getAnalysis<DominatorTreeWrapperPass>().getDomTree();
       SE = &getAnalysis<ScalarEvolutionWrapperPass>().getSE();
       TLI = &getAnalysis<TargetLibraryInfoWrapperPass>().getTLI();
       TTI = IgnoreTargetInfo
                 ? nullptr
                 : &getAnalysis<TargetTransformInfoWrapperPass>().getTTI(
                       *BB.getParent());
 
       return vectorizeBB(BB);
     }
 
     void getAnalysisUsage(AnalysisUsage &AU) const override {
       BasicBlockPass::getAnalysisUsage(AU);
-      AU.addRequired<AliasAnalysis>();
+      AU.addRequired<AAResultsWrapperPass>();
       AU.addRequired<DominatorTreeWrapperPass>();
       AU.addRequired<ScalarEvolutionWrapperPass>();
       AU.addRequired<TargetLibraryInfoWrapperPass>();
       AU.addRequired<TargetTransformInfoWrapperPass>();
-      AU.addPreserved<AliasAnalysis>();
       AU.addPreserved<DominatorTreeWrapperPass>();
+      AU.addPreserved<GlobalsAAWrapperPass>();
       AU.addPreserved<ScalarEvolutionWrapperPass>();
+      AU.addPreserved<SCEVAAWrapperPass>();
       AU.setPreservesCFG();
     }
 
     static inline VectorType *getVecTypeForPair(Type *ElemTy, Type *Elem2Ty) {
       assert(ElemTy->getScalarType() == Elem2Ty->getScalarType() &&
              "Cannot form vector from incompatible scalar types");
       Type *STy = ElemTy->getScalarType();
 
void BBVectorize::fuseChosenPairs(BasicBlock &BB,
 
     DEBUG(dbgs() << "BBV: final: \n" << BB << "\n");
   }
 }
 
 char BBVectorize::ID = 0;
 static const char bb_vectorize_name[] = "Basic-Block Vectorization";
 INITIALIZE_PASS_BEGIN(BBVectorize, BBV_NAME, bb_vectorize_name, false, false)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(TargetTransformInfoWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(ScalarEvolutionWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(GlobalsAAWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(SCEVAAWrapperPass)
 INITIALIZE_PASS_END(BBVectorize, BBV_NAME, bb_vectorize_name, false, false)
 
 BasicBlockPass *llvm::createBBVectorizePass(const VectorizeConfig &C) {
   return new BBVectorize(C);
 }
 
 bool
 llvm::vectorizeBasicBlock(Pass *P, BasicBlock &BB, const VectorizeConfig &C) {

llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp

 #include "llvm/ADT/MapVector.h"
 #include "llvm/ADT/SetVector.h"
 #include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/ADT/SmallSet.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/Analysis/AliasAnalysis.h"
+#include "llvm/Analysis/BasicAliasAnalysis.h"
 #include "llvm/Analysis/AliasSetTracker.h"
 #include "llvm/Analysis/AssumptionCache.h"
 #include "llvm/Analysis/BlockFrequencyInfo.h"
 #include "llvm/Analysis/CodeMetrics.h"
+#include "llvm/Analysis/GlobalsModRef.h"
 #include "llvm/Analysis/LoopAccessAnalysis.h"
 #include "llvm/Analysis/LoopInfo.h"
 #include "llvm/Analysis/LoopIterator.h"
 #include "llvm/Analysis/LoopPass.h"
 #include "llvm/Analysis/ScalarEvolution.h"
 #include "llvm/Analysis/ScalarEvolutionExpander.h"
 #include "llvm/Analysis/ScalarEvolutionExpressions.h"
 #include "llvm/Analysis/TargetTransformInfo.h"
struct LoopVectorize : public FunctionPass {
   bool runOnFunction(Function &F) override {
     SE = &getAnalysis<ScalarEvolutionWrapperPass>().getSE();
     LI = &getAnalysis<LoopInfoWrapperPass>().getLoopInfo();
     TTI = &getAnalysis<TargetTransformInfoWrapperPass>().getTTI(F);
     DT = &getAnalysis<DominatorTreeWrapperPass>().getDomTree();
     BFI = &getAnalysis<BlockFrequencyInfoWrapperPass>().getBFI();
     auto *TLIP = getAnalysisIfAvailable<TargetLibraryInfoWrapperPass>();
     TLI = TLIP ? &TLIP->getTLI() : nullptr;
-    AA = &getAnalysis<AliasAnalysis>();
+    AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
     AC = &getAnalysis<AssumptionCacheTracker>().getAssumptionCache(F);
     LAA = &getAnalysis<LoopAccessAnalysis>();
 
     // Compute some weights outside of the loop over the loops. Compute this
     // using a BranchProbability to re-use its scaling math.
     const BranchProbability ColdProb(1, 5); // 20%
     ColdEntryFreq = BlockFrequency(BFI->getEntryFreq()) * ColdProb;
 
void getAnalysisUsage(AnalysisUsage &AU) const override {
     AU.addRequired<AssumptionCacheTracker>();
     AU.addRequiredID(LoopSimplifyID);
     AU.addRequiredID(LCSSAID);
     AU.addRequired<BlockFrequencyInfoWrapperPass>();
     AU.addRequired<DominatorTreeWrapperPass>();
     AU.addRequired<LoopInfoWrapperPass>();
     AU.addRequired<ScalarEvolutionWrapperPass>();
     AU.addRequired<TargetTransformInfoWrapperPass>();
-    AU.addRequired<AliasAnalysis>();
+    AU.addRequired<AAResultsWrapperPass>();
     AU.addRequired<LoopAccessAnalysis>();
     AU.addPreserved<LoopInfoWrapperPass>();
     AU.addPreserved<DominatorTreeWrapperPass>();
-    AU.addPreserved<AliasAnalysis>();
+    AU.addPreserved<BasicAAWrapperPass>();
+    AU.addPreserved<AAResultsWrapperPass>();
+    AU.addPreserved<GlobalsAAWrapperPass>();
   }
 
 };
 
 } // end anonymous namespace
 
 //===----------------------------------------------------------------------===//
 // Implementation of LoopVectorizationLegality, InnerLoopVectorizer and
LoopVectorizationCostModel::getInstructionCost(Instruction *I, unsigned VF) {
   }
   }// end of switch.
 }
 
 char LoopVectorize::ID = 0;
 static const char lv_name[] = "Loop Vectorization";
 INITIALIZE_PASS_BEGIN(LoopVectorize, LV_NAME, lv_name, false, false)
 INITIALIZE_PASS_DEPENDENCY(TargetTransformInfoWrapperPass)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(BasicAAWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
+INITIALIZE_PASS_DEPENDENCY(GlobalsAAWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
 INITIALIZE_PASS_DEPENDENCY(BlockFrequencyInfoWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(DominatorTreeWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(ScalarEvolutionWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(LCSSA)
 INITIALIZE_PASS_DEPENDENCY(LoopInfoWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(LoopSimplify)
 INITIALIZE_PASS_DEPENDENCY(LoopAccessAnalysis)

llvm/trunk/lib/Transforms/Vectorize/SLPVectorizer.cpp

struct SLPVectorizer : public FunctionPass {
   bool runOnFunction(Function &F) override {
     if (skipOptnoneFunction(F))
       return false;
 
     SE = &getAnalysis<ScalarEvolutionWrapperPass>().getSE();
     TTI = &getAnalysis<TargetTransformInfoWrapperPass>().getTTI(F);
     auto *TLIP = getAnalysisIfAvailable<TargetLibraryInfoWrapperPass>();
     TLI = TLIP ? &TLIP->getTLI() : nullptr;
-    AA = &getAnalysis<AliasAnalysis>();
+    AA = &getAnalysis<AAResultsWrapperPass>().getAAResults();
     LI = &getAnalysis<LoopInfoWrapperPass>().getLoopInfo();
     DT = &getAnalysis<DominatorTreeWrapperPass>().getDomTree();
     AC = &getAnalysis<AssumptionCacheTracker>().getAssumptionCache(F);
 
     StoreRefs.clear();
     bool Changed = false;
 
     // If the target claims to have no vector registers don't attempt
bool runOnFunction(Function &F) override {
     }
     return Changed;
   }
 
   void getAnalysisUsage(AnalysisUsage &AU) const override {
     FunctionPass::getAnalysisUsage(AU);
     AU.addRequired<AssumptionCacheTracker>();
     AU.addRequired<ScalarEvolutionWrapperPass>();
-    AU.addRequired<AliasAnalysis>();
+    AU.addRequired<AAResultsWrapperPass>();
     AU.addRequired<TargetTransformInfoWrapperPass>();
     AU.addRequired<LoopInfoWrapperPass>();
     AU.addRequired<DominatorTreeWrapperPass>();
     AU.addPreserved<LoopInfoWrapperPass>();
     AU.addPreserved<DominatorTreeWrapperPass>();
     AU.setPreservesCFG();
   }
 
bool SLPVectorizer::vectorizeStoreChains(BoUpSLP &R) {
   return Changed;
 }
 
 } // end anonymous namespace
 
 char SLPVectorizer::ID = 0;
 static const char lv_name[] = "SLP Vectorizer";
 INITIALIZE_PASS_BEGIN(SLPVectorizer, SV_NAME, lv_name, false, false)
-INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
+INITIALIZE_PASS_DEPENDENCY(AAResultsWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(TargetTransformInfoWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
 INITIALIZE_PASS_DEPENDENCY(ScalarEvolutionWrapperPass)
 INITIALIZE_PASS_DEPENDENCY(LoopSimplify)
 INITIALIZE_PASS_END(SLPVectorizer, SV_NAME, lv_name, false, false)
 
 namespace llvm {
 Pass *createSLPVectorizerPass() { return new SLPVectorizer(); }
 }

llvm/trunk/test/Analysis/BasicAA/full-store-partial-alias.ll

-; RUN: opt -S -tbaa -basicaa -gvn < %s | FileCheck -check-prefix=BASICAA %s
-; RUN: opt -S -tbaa -gvn < %s | FileCheck %s
+; RUN: opt -S -tbaa -gvn < %s | FileCheck -check-prefix=BASICAA %s
+; RUN: opt -S -tbaa -disable-basicaa -gvn < %s | FileCheck %s
 ; rdar://8875631, rdar://8875069
 
 ; BasicAA should notice that the store stores to the entire %u object,
 ; so the %tmp5 load is PartialAlias with the store and suppress TBAA.
 ; Without BasicAA, TBAA should say that %tmp5 is NoAlias with the store.
 
 target datalayout = "e-p:64:64:64"
 

llvm/trunk/test/Analysis/CFLAliasAnalysis/arguments-globals.ll

 ; This testcase ensures that CFL AA gives conservative answers on variables
 ; that involve arguments.
 ; (Everything should alias everything, because args can alias globals, so the
 ; aliasing sets should of args+alloca+global should be combined)
 
-; RUN: opt < %s -cfl-aa -aa-eval -print-may-aliases -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -disable-basicaa -cfl-aa -aa-eval -print-may-aliases -disable-output 2>&1 | FileCheck %s
 
 ; CHECK:     Function: test
 
 @g = external global i32
 
 define void @test(i1 %c, i32* %arg1, i32* %arg2) {
   ; CHECK: 15 Total Alias Queries Performed
   ; CHECK: 0 no alias responses
   %A = alloca i32, align 4
   %B = select i1 %c, i32* %arg1, i32* %arg2
   %C = select i1 %c, i32* @g, i32* %A
 
   ret void
 }

llvm/trunk/test/Analysis/CFLAliasAnalysis/basic-interproc.ll

 ; This testcase ensures that CFL AA gives conservative answers on variables
 ; that involve arguments.
 
-; RUN: opt < %s -cfl-aa -aa-eval -print-may-aliases -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -disable-basicaa -cfl-aa -aa-eval -print-may-aliases -disable-output 2>&1 | FileCheck %s
 
 ; CHECK:     Function: test
 ; CHECK: 2 Total Alias Queries Performed
 ; CHECK: 1 no alias responses
 ; ^^ In @test2, %arg1 and %arg2 may alias
 
 define void @test2(i32* %arg1, i32* %arg2) {
   store i32 0, i32* %arg1

llvm/trunk/test/Analysis/CFLAliasAnalysis/branch-alias.ll

 ; Makes sure that we give up on some pathological cases with inttoptr/ptrtoint
 ;
 ; @ptr_test was generated from the following C code:
 ;  void ptr_test() {
 ;    int* A;
 ;    unsigned long RefCopy = 0;
 ;    for (int i = 0; i < 8*sizeof(&A); ++i) {
 ;      if ((unsigned long)&A & (1UL << i))
 ;        RefCopy |= 1UL << i;
 ;    }
 ;
 ;    int** AliasA1 = (int**)RefCopy;
 ;    int* ShouldAliasA = *AliasA1;
 ;  }
 
-; RUN: opt < %s -cfl-aa -aa-eval -print-may-aliases -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -disable-basicaa -cfl-aa -aa-eval -print-may-aliases -disable-output 2>&1 | FileCheck %s
 
 ; CHECK: Function: ptr_test
 define void @ptr_test() #0 {
   ; CHECK: MayAlias: i32** %A, i32** %ShouldAliasA
   ; CHECK-NOT: %AliasA1
 entry:
   %A = alloca i32*, align 8
   %RefCopy = alloca i64, align 8

llvm/trunk/test/Analysis/CFLAliasAnalysis/const-expr-gep.ll

 ; This testcase consists of alias relations which should be completely
 ; resolvable by cfl-aa, but require analysis of getelementptr constant exprs.
 ; Derived from BasicAA/2003-12-11-ConstExprGEP.ll
 
-; RUN: opt < %s -cfl-aa -aa-eval -print-may-aliases -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -disable-basicaa -cfl-aa -aa-eval -print-may-aliases -disable-output 2>&1 | FileCheck %s
 
 %T = type { i32, [10 x i8] }
 
 @G = external global %T
 @G2 = external global %T
 
 ; TODO: Quite a few of these are MayAlias because we don't yet consider
 ; constant offsets in CFLAA. If we start doing so, then we'll need to

llvm/trunk/test/Analysis/CFLAliasAnalysis/full-store-partial-alias.ll

-; RUN: opt -S -tbaa -cfl-aa -gvn < %s | FileCheck -check-prefix=CFLAA %s
-; RUN: opt -S -tbaa -gvn < %s | FileCheck %s
+; RUN: opt -S -disable-basicaa -tbaa -cfl-aa -gvn < %s | FileCheck -check-prefix=CFLAA %s
+; RUN: opt -S -disable-basicaa -tbaa -gvn < %s | FileCheck %s
 ; Adapted from the BasicAA full-store-partial-alias.ll test.
 
 ; CFL AA could notice that the store stores to the entire %u object,
 ; so the %tmp5 load is PartialAlias with the store and suppress TBAA.
 ; FIXME: However, right now, CFLAA cannot prove PartialAlias here
 ; Without CFL AA, TBAA should say that %tmp5 is NoAlias with the store.
 
 target datalayout = "e-p:64:64:64"

llvm/trunk/test/Analysis/CFLAliasAnalysis/gep-signed-arithmetic.ll

-; RUN: opt < %s -cfl-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -disable-basicaa -cfl-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
 ; Derived from BasicAA/2010-09-15-GEP-SignedArithmetic.ll
 
 target datalayout = "e-p:32:32:32"
 
 ; FIXME: This could be PartialAlias but CFLAA can't currently prove it
 ; CHECK: 1 may alias response
 
 define i32 @test(i32 %indvar) nounwind {

llvm/trunk/test/Analysis/CFLAliasAnalysis/multilevel-combine.ll

 ; This testcase ensures that CFL AA responds conservatively when we union 
 ; groups of pointers together through ternary/conditional operations
 ; Derived from:
 ; void foo(bool c) {
 ;   char a, b;
 ;   char *m = c ? &a : &b;
 ;   *m;
 ; }
 ;
 
-; RUN: opt < %s -cfl-aa -aa-eval -print-may-aliases -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -disable-basicaa -cfl-aa -aa-eval -print-may-aliases -disable-output 2>&1 | FileCheck %s
 
 %T = type { i32, [10 x i8] }
 
 ; CHECK:     Function: test
 
 define void @test(i1 %C) {
 ; CHECK: 10 Total Alias Queries Performed
 ; CHECK: 4 no alias responses

llvm/trunk/test/Analysis/CFLAliasAnalysis/must-and-partial.ll

-; RUN: opt < %s -cfl-aa -aa-eval -print-all-alias-modref-info 2>&1 | FileCheck %s
+; RUN: opt < %s -disable-basicaa -cfl-aa -aa-eval -print-all-alias-modref-info 2>&1 | FileCheck %s
 ; When merging MustAlias and PartialAlias, merge to PartialAlias
 ; instead of MayAlias.
 
 
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
 
 ; FIXME: This could be PartialAlias but CFLAA can't currently prove it
 ; CHECK: MayAlias:  i16* %bigbase0, i8* %phi

llvm/trunk/test/Analysis/CFLAliasAnalysis/opaque-call-alias.ll

 ; We previously had a case where we would put results from a no-args call in
 ; its own stratified set. This would make cases like the one in @test say that
 ; nothing (except %Escapes and %Arg) can alias
 
-; RUN: opt < %s -cfl-aa -aa-eval -print-may-aliases -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -disable-basicaa -cfl-aa -aa-eval -print-may-aliases -disable-output 2>&1 | FileCheck %s
 
 ; CHECK:     Function: test
 ; CHECK:     MayAlias: i8* %Arg, i8* %Escapes
 ; CHECK:     MayAlias: i8* %Arg, i8* %Retrieved
 ; CHECK:     MayAlias: i8* %Escapes, i8* %Retrieved
 define void @test(i8* %Arg) {
   %Noalias = alloca i8
   %Escapes = alloca i8
   call void @set_thepointer(i8* %Escapes)
   %Retrieved = call i8* @get_thepointer()
   ret void
 }
 
 declare void @set_thepointer(i8* %P)
 declare i8* @get_thepointer()

llvm/trunk/test/Analysis/CFLAliasAnalysis/va.ll

-; RUN: opt < %s -cfl-aa -aa-eval -print-may-aliases -disable-output 2>&1 | FileCheck %s
+; RUN: opt < %s -disable-basicaa -cfl-aa -aa-eval -print-may-aliases -disable-output 2>&1 | FileCheck %s
 
 ; CHECK-LABEL: Function: test1
 ; CHECK: 0 no alias responses
 
 define i32 @test1(i32 %X, ...) {
   ; Initialize variable argument processing
   %ap = alloca i8*
   %ap2 = bitcast i8** %ap to i8*

llvm/trunk/test/Analysis/DependenceAnalysis/PR21585.ll

-; RUN: opt < %s -analyze -basicaa -globalsmodref-aa -da | FileCheck %s
+; RUN: opt < %s -analyze -basicaa -globals-aa -da | FileCheck %s
 define void @i32_subscript(i32* %a) {
 entry:
   br label %for.body
 
 for.body:
   %i = phi i32 [ 0, %entry ], [ %i.inc, %for.body ]
   %a.addr = getelementptr i32, i32* %a, i32 %i
   %a.addr.2 = getelementptr i32, i32* %a, i32 5

llvm/trunk/test/Analysis/GlobalsModRef/2008-09-03-ReadGlobals.ll

-; RUN: opt < %s -globalsmodref-aa -gvn -S | FileCheck %s
+; RUN: opt < %s -globals-aa -gvn -S | FileCheck %s
 
 @g = internal global i32 0    ; <i32*> [#uses=2]
 
 define i32 @r() {
   %tmp = load i32, i32* @g    ; <i32> [#uses=1]
   ret i32 %tmp
 }
 

llvm/trunk/test/Analysis/GlobalsModRef/aliastest.ll

-; RUN: opt < %s -basicaa -globalsmodref-aa -gvn -S -enable-unsafe-globalsmodref-alias-results | FileCheck %s
+; RUN: opt < %s -basicaa -globals-aa -gvn -S -enable-unsafe-globalsmodref-alias-results | FileCheck %s
 ;
 ; Note that this test relies on an unsafe feature of GlobalsModRef. While this
 ; test is correct and safe, GMR's technique for handling this isn't generally.
 
 @X = internal global i32 4    ; <i32*> [#uses=1]
 
 define i32 @test(i32* %P) {
 ; CHECK:      @test
 ; CHECK-NEXT: store i32 7, i32* %P
 ; CHECK-NEXT: store i32 12, i32* @X
 ; CHECK-NEXT: ret i32 7
   store i32 7, i32* %P
   store i32 12, i32* @X
   %V = load i32, i32* %P    ; <i32> [#uses=1]
   ret i32 %V
 }

llvm/trunk/test/Analysis/GlobalsModRef/atomic-instrs.ll

-; RUN: opt < %s -globalsmodref-aa -gvn -S | FileCheck %s
+; RUN: opt < %s -globals-aa -gvn -S | FileCheck %s
 
 @X = internal global i32 4
 
 define i32 @test_cmpxchg(i32* %P) {
 ; CHECK-LABEL: @test_cmpxchg
 ; CHECK-NEXT: store i32 12, i32* @X
 ; CHECK-NEXT: call void @modrefX_cmpxchg()
 ; CHECK-NEXT: %V = load i32, i32* @X

llvm/trunk/test/Analysis/GlobalsModRef/chaining-analysis.ll

-; RUN: opt < %s -basicaa -globalsmodref-aa -gvn -S | FileCheck %s
+; RUN: opt < %s -basicaa -globals-aa -gvn -S | FileCheck %s
 
 ; This test requires the use of previous analyses to determine that
 ; doesnotmodX does not modify X (because 'sin' doesn't).
 
 @X = internal global i32 4    ; <i32*> [#uses=2]
 
 declare double @sin(double) readnone
 

llvm/trunk/test/Analysis/GlobalsModRef/indirect-global.ll

-; RUN: opt < %s -basicaa -globalsmodref-aa -gvn -instcombine -S -enable-unsafe-globalsmodref-alias-results | FileCheck %s
+; RUN: opt < %s -basicaa -globals-aa -gvn -instcombine -S -enable-unsafe-globalsmodref-alias-results | FileCheck %s
 ;
 ; Note that this test relies on an unsafe feature of GlobalsModRef. While this
 ; test is correct and safe, GMR's technique for handling this isn't generally.
 
 @G = internal global i32* null    ; <i32**> [#uses=3]
 
 declare i8* @malloc(i32)
 define void @test() {

llvm/trunk/test/Analysis/GlobalsModRef/modreftest.ll

-; RUN: opt < %s -basicaa -globalsmodref-aa -gvn -S | FileCheck %s
+; RUN: opt < %s -basicaa -globals-aa -gvn -S | FileCheck %s
 
 @X = internal global i32 4    ; <i32*> [#uses=2]
 
 define i32 @test(i32* %P) {
 ; CHECK:      @test
 ; CHECK-NEXT: store i32 12, i32* @X
 ; CHECK-NEXT: call void @doesnotmodX()
 ; CHECK-NEXT: ret i32 12

llvm/trunk/test/Analysis/GlobalsModRef/nonescaping-noalias.ll

-; RUN: opt < %s -globalsmodref-aa -gvn -S | FileCheck %s
+; RUN: opt < %s -globals-aa -gvn -S | FileCheck %s
 ;
 ; This tests the safe no-alias conclusions of GMR -- when there is
 ; a non-escaping global as one indentified underlying object and some pointer
 ; that would inherently have escaped any other function as the other underlying
 ; pointer of an alias query.
 
 @g1 = internal global i32 0
 

llvm/trunk/test/Analysis/GlobalsModRef/pr12351.ll

-; RUN: opt < %s -basicaa -globalsmodref-aa -gvn -S | FileCheck %s
+; RUN: opt < %s -basicaa -globals-aa -gvn -S | FileCheck %s
 
 declare void @llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)
 define void @foo(i8* %x, i8* %y) {
   call void @llvm.memcpy.p0i8.p0i8.i32(i8* %x, i8* %y, i32 1, i32 1, i1 false);
   ret void
 }
 
 define void @bar(i8* %y, i8* %z) {

llvm/trunk/test/Analysis/GlobalsModRef/purecse.ll

 ; Test that pure functions are cse'd away
-; RUN: opt < %s -globalsmodref-aa -gvn -instcombine -S | FileCheck %s
+; RUN: opt < %s -disable-basicaa -globals-aa -gvn -instcombine -S | FileCheck %s
 
 define i32 @pure(i32 %X) {
         %Y = add i32 %X, 1              ; <i32> [#uses=1]
         ret i32 %Y
 }
 
 define i32 @test1(i32 %X) {
 ; CHECK:      %A = call i32 @pure(i32 %X)

llvm/trunk/test/Analysis/ScalarEvolution/scev-aa.ll

-; RUN: opt < %s -scev-aa -aa-eval -print-all-alias-modref-info \
+; RUN: opt -disable-output < %s -disable-basicaa -scev-aa -aa-eval -print-all-alias-modref-info \
 ; RUN:   2>&1 | FileCheck %s
 
 ; At the time of this writing, -basicaa misses the example of the form
 ; A[i+(j+1)] != A[i+j], which can arise from multi-dimensional array references,
 ; and the example of the form A[0] != A[i+1], where i+1 is known to be positive.
 
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64"
 

llvm/trunk/test/Analysis/TypeBasedAliasAnalysis/precedence.ll

-; RUN: opt -basicaa -tbaa -gvn -instcombine -S < %s | FileCheck %s --check-prefix=TBAA
-; RUN: opt -tbaa -basicaa -gvn -instcombine -S < %s | FileCheck %s --check-prefix=BASICAA
+; RUN: opt -tbaa -disable-basicaa -gvn -instcombine -S < %s | FileCheck %s --check-prefix=TBAA
+; RUN: opt -tbaa -gvn -instcombine -S < %s | FileCheck %s --check-prefix=BASICAA
 
 ; According to the TBAA metadata the load and store don't alias. However,
-; according to the actual code, they do. The order of the alias analysis
-; passes should determine which of these takes precedence.
+; according to the actual code, they do. Disabling basicaa shows the raw TBAA
+; results.
 
 target datalayout = "e-p:64:64:64"
 
 ; Test for simple MustAlias aliasing.
 
 ; TBAA:    @trouble
 ; TBAA:      ret i32 0
 ; BASICAA: @trouble

llvm/trunk/test/Transforms/BBVectorize/X86/wr-aliases.ll

-; RUN: opt -mtriple=x86_64-unknown-linux-gnu -mcpu=corei7-avx -bb-vectorize -S < %s | FileCheck %s
+; RUN: opt -mtriple=x86_64-unknown-linux-gnu -mcpu=corei7-avx -disable-basicaa -bb-vectorize -S < %s | FileCheck %s
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
 target triple = "x86_64-unknown-linux-gnu"
 
 %class.QBezier.15 = type { double, double, double, double, double, double, double, double }
 
 ; Function Attrs: nounwind
 declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1) #0
 

llvm/trunk/test/Transforms/GVN/crash-no-aa.ll

-; RUN: opt -no-aa -gvn -S < %s
+; RUN: opt -disable-basicaa -gvn -S < %s
 
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
 target triple = "x86_64-unknown-freebsd8.0"
 
 ; PR5744
 define i32 @test1({i16, i32} *%P) {
   %P2 = getelementptr {i16, i32}, {i16, i32} *%P, i32 0, i32 0
   store i16 42, i16* %P2
 
   %P3 = getelementptr {i16, i32}, {i16, i32} *%P, i32 0, i32 1
   %V = load i32, i32* %P3
   ret i32 %V
 }
 

llvm/trunk/test/Transforms/GVN/pr14166.ll

-; RUN: opt -gvn -S < %s | FileCheck %s
+; RUN: opt -disable-basicaa -gvn -S < %s | FileCheck %s
 target datalayout = "e-p:32:32:32"
 target triple = "i386-pc-linux-gnu"
 define <2 x i32> @test1() {
   %v1 = alloca <2 x i32>
   call void @anything(<2 x i32>* %v1)
   %v2 = load <2 x i32>, <2 x i32>* %v1
   %v3 = inttoptr <2 x i32> %v2 to <2 x i8*>
   %v4 = bitcast <2 x i32>* %v1 to <2 x i8*>*

llvm/trunk/test/Transforms/LICM/2004-09-14-AliasAnalysisInvalidate.ll

-; RUN: opt < %s -globalsmodref-aa -licm -disable-output
+; RUN: opt < %s -globals-aa -licm -disable-output
 
 @PL_regcomp_parse = internal global i8* null    ; <i8**> [#uses=2]
 
 define void @test() {
   br label %Outer
 Outer:    ; preds = %Next, %0
   br label %Inner
 Inner:    ; preds = %Inner, %Outer

llvm/trunk/test/Transforms/LICM/hoist-invariant-load.ll

 ; REQUIRES: asserts
-; RUN: opt < %s -licm -stats -S 2>&1 | grep "1 licm"
+; RUN: opt < %s -licm -disable-basicaa -stats -S 2>&1 | grep "1 licm"
 
 @"\01L_OBJC_METH_VAR_NAME_" = internal global [4 x i8] c"foo\00", section "__TEXT,__objc_methname,cstring_literals", align 1
 @"\01L_OBJC_SELECTOR_REFERENCES_" = internal global i8* getelementptr inbounds ([4 x i8], [4 x i8]* @"\01L_OBJC_METH_VAR_NAME_", i32 0, i32 0), section "__DATA, __objc_selrefs, literal_pointers, no_dead_strip"
 @"\01L_OBJC_IMAGE_INFO" = internal constant [2 x i32] [i32 0, i32 16], section "__DATA, __objc_imageinfo, regular, no_dead_strip"
 @llvm.used = appending global [3 x i8*] [i8* getelementptr inbounds ([4 x i8], [4 x i8]* @"\01L_OBJC_METH_VAR_NAME_", i32 0, i32 0), i8* bitcast (i8** @"\01L_OBJC_SELECTOR_REFERENCES_" to i8*), i8* bitcast ([2 x i32]* @"\01L_OBJC_IMAGE_INFO" to i8*)], section "llvm.metadata"
 
 define void @test(i8* %x) uwtable ssp {
 entry:

llvm/trunk/test/Transforms/LoopVectorize/X86/reduction-crash.ll

-; RUN: opt -S -loop-vectorize -mcpu=prescott < %s | FileCheck %s
+; RUN: opt -S -loop-vectorize -mcpu=prescott -disable-basicaa < %s | FileCheck %s
 
 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32-S128"
 target triple = "i386-apple-darwin"
 
 ; PR15344
 define void @test1(float* nocapture %arg, i32 %arg1) nounwind {
 ; CHECK-LABEL: @test1(
 ; CHECK: preheader

llvm/trunk/test/Transforms/ObjCARC/provenance.ll

-; RUN: opt -disable-output -pa-eval %s 2>&1 | FileCheck %s
+; RUN: opt -disable-output -disable-basicaa -pa-eval %s 2>&1 | FileCheck %s
 
 @"\01l_objc_msgSend_fixup_" = global i8 0
 @g1 = global i8 0, section "__OBJC,__message_refs,literal_pointers,no_dead_strip"
 @g2 = global i8 0, section "__DATA, __objc_classrefs, regular, no_dead_strip"
 @g3 = global i8 0, section "__DATA, __objc_superrefs, regular, no_dead_strip"
 @g4 = global i8 0, section "__TEXT,__objc_methname,cstring_literals"
 @g5 = global i8 0, section "__TEXT,__cstring,cstring_literals"
 

llvm/trunk/unittests/Analysis/AliasAnalysisTest.cpp

 //===--- AliasAnalysisTest.cpp - Mixed TBAA unit tests --------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Analysis/AliasAnalysis.h"
+#include "llvm/Analysis/AssumptionCache.h"
 #include "llvm/Analysis/BasicAliasAnalysis.h"
-#include "llvm/Analysis/Passes.h"
+#include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/Instructions.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/Module.h"
-#include "llvm/IR/LegacyPassManager.h"
 #include "llvm/Support/CommandLine.h"
 #include "gtest/gtest.h"
 
 namespace llvm {
 namespace {
 
 class AliasAnalysisTest : public testing::Test {
 protected:
-  AliasAnalysisTest() : M("AliasAnalysisTBAATest", C) {}
-
-  // This is going to check that calling getModRefInfo without a location, and
-  // with a default location, first, doesn't crash, and second, gives the right
-  // answer.
-  void CheckModRef(Instruction *I, ModRefInfo Result) {
-    static char ID;
-    class CheckModRefTestPass : public FunctionPass {
-    public:
-      CheckModRefTestPass(Instruction *I, ModRefInfo Result)
-          : FunctionPass(ID), ExpectResult(Result), I(I) {}
-      static int initialize() {
-        PassInfo *PI = new PassInfo("CheckModRef testing pass", "", &ID,
-                                    nullptr, true, true);
-        PassRegistry::getPassRegistry()->registerPass(*PI, false);
-        initializeAliasAnalysisAnalysisGroup(*PassRegistry::getPassRegistry());
-        initializeBasicAliasAnalysisPass(*PassRegistry::getPassRegistry());
-        return 0;
-      }
-      void getAnalysisUsage(AnalysisUsage &AU) const override {
-        AU.setPreservesAll();
-        AU.addRequiredTransitive<AliasAnalysis>();
-      }
-      bool runOnFunction(Function &) override {
-        AliasAnalysis &AA = getAnalysis<AliasAnalysis>();
-        EXPECT_EQ(AA.getModRefInfo(I, MemoryLocation()), ExpectResult);
-        EXPECT_EQ(AA.getModRefInfo(I), ExpectResult);
-        return false;
-      }
-      ModRefInfo ExpectResult;
-      Instruction *I;
-    };
-    static int initialize = CheckModRefTestPass::initialize();
-    (void)initialize;
-    CheckModRefTestPass *P = new CheckModRefTestPass(I, Result);
-    legacy::PassManager PM;
-    PM.add(createBasicAliasAnalysisPass());
-    PM.add(P);
-    PM.run(M);
-  }
-
   LLVMContext C;
   Module M;
+  TargetLibraryInfoImpl TLII;
+  TargetLibraryInfo TLI;
+  std::unique_ptr<AssumptionCache> AC;
+  std::unique_ptr<BasicAAResult> BAR;
+  std::unique_ptr<AAResults> AAR;
+
+  AliasAnalysisTest() : M("AliasAnalysisTest", C), TLI(TLII) {}
+
+  AAResults &getAAResults(Function &F) {
+    // Reset the Function AA results first to clear out any references.
+    AAR.reset(new AAResults());
+
+    // Build the various AA results and register them.
+    AC.reset(new AssumptionCache(F));
+    BAR.reset(new BasicAAResult(M.getDataLayout(), TLI, *AC));
+    AAR->addAAResult(*BAR);
+
+    return *AAR;
+  }
 };
 
 TEST_F(AliasAnalysisTest, getModRefInfo) {
   // Setup function.
   FunctionType *FTy =
       FunctionType::get(Type::getVoidTy(C), std::vector<Type *>(), false);
   auto *F = cast<Function>(M.getOrInsertFunction("f", FTy));
   auto *BB = BasicBlock::Create(C, "entry", F);
auto *CmpXChg1 = new AtomicCmpXchgInst(Addr, ConstantInt::get(IntType, 0),
                                          ConstantInt::get(IntType, 1),
                                          Monotonic, Monotonic, CrossThread, BB);
   auto *AtomicRMW =
       new AtomicRMWInst(AtomicRMWInst::Xchg, Addr, ConstantInt::get(IntType, 1),
                         Monotonic, CrossThread, BB);
 
   ReturnInst::Create(C, nullptr, BB);
 
+  auto &AA = getAAResults(*F);
+
   // Check basic results
-  CheckModRef(Store1, MRI_Mod);
-  CheckModRef(Load1, MRI_Ref);
-  CheckModRef(Add1, MRI_NoModRef);
-  CheckModRef(VAArg1, MRI_ModRef);
-  CheckModRef(CmpXChg1, MRI_ModRef);
-  CheckModRef(AtomicRMW, MRI_ModRef);
+  EXPECT_EQ(AA.getModRefInfo(Store1, MemoryLocation()), MRI_Mod);
+  EXPECT_EQ(AA.getModRefInfo(Store1), MRI_Mod);
+  EXPECT_EQ(AA.getModRefInfo(Load1, MemoryLocation()), MRI_Ref);
+  EXPECT_EQ(AA.getModRefInfo(Load1), MRI_Ref);
+  EXPECT_EQ(AA.getModRefInfo(Add1, MemoryLocation()), MRI_NoModRef);
+  EXPECT_EQ(AA.getModRefInfo(Add1), MRI_NoModRef);
+  EXPECT_EQ(AA.getModRefInfo(VAArg1, MemoryLocation()), MRI_ModRef);
+  EXPECT_EQ(AA.getModRefInfo(VAArg1), MRI_ModRef);
+  EXPECT_EQ(AA.getModRefInfo(CmpXChg1, MemoryLocation()), MRI_ModRef);
+  EXPECT_EQ(AA.getModRefInfo(CmpXChg1), MRI_ModRef);
+  EXPECT_EQ(AA.getModRefInfo(AtomicRMW, MemoryLocation()), MRI_ModRef);
+  EXPECT_EQ(AA.getModRefInfo(AtomicRMW), MRI_ModRef);
 }
 
 } // end anonymous namspace
 } // end llvm namespace

llvm/trunk/unittests/Analysis/MixedTBAATest.cpp

// Old TBAA metadata
     Store1->setMetadata(LLVMContext::MD_tbaa, MD2);
   }
 
   // Run the TBAA eval pass on a mixture of path-aware and non-path-aware TBAA.
   // The order of the metadata (path-aware vs non-path-aware) is important,
   // because the AA eval pass only runs one test per store-pair.
   const char* args[] = { "MixedTBAATest", "-evaluate-aa-metadata" };
   cl::ParseCommandLineOptions(sizeof(args) / sizeof(const char*), args);
-  PM.add(createTypeBasedAliasAnalysisPass());
+  PM.add(createTypeBasedAAWrapperPass());
   PM.add(createAAEvalPass());
   PM.run(M);
 }
 
 } // end anonymous namspace
 } // end llvm namespace
 

llvm/trunk/unittests/ExecutionEngine/MCJIT/MCJITTestAPICommon.h

 //
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_UNITTESTS_EXECUTIONENGINE_MCJIT_MCJITTESTAPICOMMON_H
 #define LLVM_UNITTESTS_EXECUTIONENGINE_MCJIT_MCJITTESTAPICOMMON_H
 
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/Triple.h"
+#include "llvm/IR/LegacyPassManager.h"
+#include "llvm/InitializePasses.h"
 #include "llvm/Support/Host.h"
 #include "llvm/Support/TargetSelect.h"
 
 // Used to skip tests on unsupported architectures and operating systems.
 // To skip a test, add this macro at the top of a test-case in a suite that
 // inherits from MCJITTestBase. See MCJITTest.cpp for examples.
 #define SKIP_UNSUPPORTED_PLATFORM \
   do \
     if (!ArchSupportsMCJIT() || !OSSupportsMCJIT()) \
       return; \
   while(0)
 
 namespace llvm {
 
 class MCJITTestAPICommon {
 protected:
   MCJITTestAPICommon()
     : HostTriple(sys::getProcessTriple())
   {
     InitializeNativeTarget();
     InitializeNativeTargetAsmPrinter();
 
+    // FIXME: It isn't at all clear why this is necesasry, but without it we
+    // fail to initialize the AssumptionCacheTracker.
+    initializeAssumptionCacheTrackerPass(*PassRegistry::getPassRegistry());
+
 #ifdef LLVM_ON_WIN32
     // On Windows, generate ELF objects by specifying "-elf" in triple
     HostTriple += "-elf";
 #endif // LLVM_ON_WIN32
     HostTriple = Triple::normalize(HostTriple);
   }
 
   /// Returns true if the host architecture is known to support MCJIT