Index: include/llvm/Analysis/AliasAnalysis.h
===================================================================
--- include/llvm/Analysis/AliasAnalysis.h
+++ include/llvm/Analysis/AliasAnalysis.h
@@ -37,6 +37,7 @@
 #ifndef LLVM_ANALYSIS_ALIASANALYSIS_H
 #define LLVM_ANALYSIS_ALIASANALYSIS_H
 
+#include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/None.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/ADT/SmallVector.h"
@@ -285,6 +286,29 @@
   return ModRefInfo(FMRB & static_cast<int>(ModRefInfo::ModRef));
 }
 
+/// This class stores the info we want to pass to any alias query. By default,
+/// AliasAnalysis is stateless, i.e., every alias()/getModRefInfo call uses a
+/// new AAQueryInfo object. AAQueryInfo currently holds the BasicAA caches. To
+/// enable reusing the query info (state) across alias()/getModRefInfo() calls,
+/// the AA user must use a BatchAAResults, which has an internal AAQueryInfo.
+/// Reusing the same object will preserve the state. This enables using
+/// AliasAnalysis in "batch mode", by currently keeping BasicAA caches inbetween
+/// queries. The information stored here can further be extended to be used by
+/// multiple AAs.
+class AAQueryInfo {
+public:
+  using LocPair = std::pair<MemoryLocation, MemoryLocation>;
+  using AliasCacheT = SmallDenseMap<LocPair, AliasResult, 8>;
+  AliasCacheT AliasCache;
+
+  using IsCapturedCacheT = SmallDenseMap<const Value *, bool, 8>;
+  IsCapturedCacheT IsCapturedCache;
+
+  AAQueryInfo() : AliasCache(), IsCapturedCache() {}
+};
+
+class BatchAAResults;
+
 class AAResults {
 public:
   // Make these results default constructable and movable. We have to spell
@@ -599,32 +623,8 @@
   /// helpers above.
   ModRefInfo getModRefInfo(const Instruction *I,
                            const Optional<MemoryLocation> &OptLoc) {
-    if (OptLoc == None) {
-      if (const auto *Call = dyn_cast<CallBase>(I)) {
-        return createModRefInfo(getModRefBehavior(Call));
-      }
-    }
-
-    const MemoryLocation &Loc = OptLoc.getValueOr(MemoryLocation());
-
-    switch (I->getOpcode()) {
-    case Instruction::VAArg:  return getModRefInfo((const VAArgInst*)I, Loc);
-    case Instruction::Load:   return getModRefInfo((const LoadInst*)I,  Loc);
-    case Instruction::Store:  return getModRefInfo((const StoreInst*)I, Loc);
-    case Instruction::Fence:  return getModRefInfo((const FenceInst*)I, Loc);
-    case Instruction::AtomicCmpXchg:
-      return getModRefInfo((const AtomicCmpXchgInst*)I, Loc);
-    case Instruction::AtomicRMW:
-      return getModRefInfo((const AtomicRMWInst*)I, Loc);
-    case Instruction::Call:   return getModRefInfo((const CallInst*)I,  Loc);
-    case Instruction::Invoke: return getModRefInfo((const InvokeInst*)I,Loc);
-    case Instruction::CatchPad:
-      return getModRefInfo((const CatchPadInst *)I, Loc);
-    case Instruction::CatchRet:
-      return getModRefInfo((const CatchReturnInst *)I, Loc);
-    default:
-      return ModRefInfo::NoModRef;
-    }
+    AAQueryInfo AAQIP;
+    return getModRefInfo(I, OptLoc, AAQIP);
   }
 
   /// A convenience wrapper for constructing the memory location.
@@ -691,6 +691,69 @@
   }
 
 private:
+  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB,
+                    AAQueryInfo &AAQI);
+  bool pointsToConstantMemory(const MemoryLocation &Loc, AAQueryInfo &AAQI,
+                              bool OrLocal = false);
+  ModRefInfo getModRefInfo(Instruction *I, const CallBase *Call2,
+                           AAQueryInfo &AAQIP);
+  ModRefInfo getModRefInfo(const CallBase *Call, const MemoryLocation &Loc,
+                           AAQueryInfo &AAQI);
+  ModRefInfo getModRefInfo(const CallBase *Call1, const CallBase *Call2,
+                           AAQueryInfo &AAQI);
+  ModRefInfo getModRefInfo(const VAArgInst *V, const MemoryLocation &Loc,
+                           AAQueryInfo &AAQI);
+  ModRefInfo getModRefInfo(const LoadInst *L, const MemoryLocation &Loc,
+                           AAQueryInfo &AAQI);
+  ModRefInfo getModRefInfo(const StoreInst *S, const MemoryLocation &Loc,
+                           AAQueryInfo &AAQI);
+  ModRefInfo getModRefInfo(const FenceInst *S, const MemoryLocation &Loc,
+                           AAQueryInfo &AAQI);
+  ModRefInfo getModRefInfo(const AtomicCmpXchgInst *CX,
+                           const MemoryLocation &Loc, AAQueryInfo &AAQI);
+  ModRefInfo getModRefInfo(const AtomicRMWInst *RMW, const MemoryLocation &Loc,
+                           AAQueryInfo &AAQI);
+  ModRefInfo getModRefInfo(const CatchPadInst *I, const MemoryLocation &Loc,
+                           AAQueryInfo &AAQI);
+  ModRefInfo getModRefInfo(const CatchReturnInst *I, const MemoryLocation &Loc,
+                           AAQueryInfo &AAQI);
+  ModRefInfo getModRefInfo(const Instruction *I,
+                           const Optional<MemoryLocation> &OptLoc,
+                           AAQueryInfo &AAQIP) {
+    if (OptLoc == None) {
+      if (const auto *Call = dyn_cast<CallBase>(I)) {
+        return createModRefInfo(getModRefBehavior(Call));
+      }
+    }
+
+    const MemoryLocation &Loc = OptLoc.getValueOr(MemoryLocation());
+
+    switch (I->getOpcode()) {
+    case Instruction::VAArg:
+      return getModRefInfo((const VAArgInst *)I, Loc, AAQIP);
+    case Instruction::Load:
+      return getModRefInfo((const LoadInst *)I, Loc, AAQIP);
+    case Instruction::Store:
+      return getModRefInfo((const StoreInst *)I, Loc, AAQIP);
+    case Instruction::Fence:
+      return getModRefInfo((const FenceInst *)I, Loc, AAQIP);
+    case Instruction::AtomicCmpXchg:
+      return getModRefInfo((const AtomicCmpXchgInst *)I, Loc, AAQIP);
+    case Instruction::AtomicRMW:
+      return getModRefInfo((const AtomicRMWInst *)I, Loc, AAQIP);
+    case Instruction::Call:
+      return getModRefInfo((const CallInst *)I, Loc, AAQIP);
+    case Instruction::Invoke:
+      return getModRefInfo((const InvokeInst *)I, Loc, AAQIP);
+    case Instruction::CatchPad:
+      return getModRefInfo((const CatchPadInst *)I, Loc, AAQIP);
+    case Instruction::CatchRet:
+      return getModRefInfo((const CatchReturnInst *)I, Loc, AAQIP);
+    default:
+      return ModRefInfo::NoModRef;
+    }
+  }
+
   class Concept;
 
   template <typename T> class Model;
@@ -702,6 +765,41 @@
   std::vector<std::unique_ptr<Concept>> AAs;
 
   std::vector<AnalysisKey *> AADeps;
+
+  friend class BatchAAResults;
+};
+
+class BatchAAResults {
+  AAResults &AA;
+  AAQueryInfo AAQI;
+
+public:
+  BatchAAResults(AAResults &AAR) : AA(AAR), AAQI() {}
+  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB) {
+    return AA.alias(LocA, LocB, AAQI);
+  }
+  bool pointsToConstantMemory(const MemoryLocation &Loc, bool OrLocal = false) {
+    return AA.pointsToConstantMemory(Loc, AAQI, OrLocal);
+  }
+  ModRefInfo getModRefInfo(const CallBase *Call, const MemoryLocation &Loc) {
+    return AA.getModRefInfo(Call, Loc, AAQI);
+  }
+  ModRefInfo getModRefInfo(const CallBase *Call1, const CallBase *Call2) {
+    return AA.getModRefInfo(Call1, Call2, AAQI);
+  }
+  ModRefInfo getModRefInfo(const Instruction *I,
+                           const Optional<MemoryLocation> &OptLoc) {
+    return AA.getModRefInfo(I, OptLoc, AAQI);
+  }
+  ModRefInfo getModRefInfo(Instruction *I, const CallBase *Call2) {
+    return AA.getModRefInfo(I, Call2, AAQI);
+  }
+  ModRefInfo getArgModRefInfo(const CallBase *Call, unsigned ArgIdx) {
+    return AA.getArgModRefInfo(Call, ArgIdx);
+  }
+  FunctionModRefBehavior getModRefBehavior(const CallBase *Call) {
+    return AA.getModRefBehavior(Call);
+  }
 };
 
 /// Temporary typedef for legacy code that uses a generic \c AliasAnalysis
@@ -734,12 +832,12 @@
   /// 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;
+                            const MemoryLocation &LocB, AAQueryInfo &AAQI) = 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;
+                                      AAQueryInfo &AAQI, bool OrLocal) = 0;
 
   /// @}
   //===--------------------------------------------------------------------===//
@@ -763,13 +861,14 @@
   /// getModRefInfo (for call sites) - Return information about whether
   /// a particular call site modifies or reads the specified memory location.
   virtual ModRefInfo getModRefInfo(const CallBase *Call,
-                                   const MemoryLocation &Loc) = 0;
+                                   const MemoryLocation &Loc,
+                                   AAQueryInfo &AAQI) = 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(const CallBase *Call1,
-                                   const CallBase *Call2) = 0;
+  virtual ModRefInfo getModRefInfo(const CallBase *Call1, const CallBase *Call2,
+                                   AAQueryInfo &AAQI) = 0;
 
   /// @}
 };
@@ -791,14 +890,14 @@
 
   void setAAResults(AAResults *NewAAR) override { Result.setAAResults(NewAAR); }
 
-  AliasResult alias(const MemoryLocation &LocA,
-                    const MemoryLocation &LocB) override {
-    return Result.alias(LocA, LocB);
+  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB,
+                    AAQueryInfo &AAQI) override {
+    return Result.alias(LocA, LocB, AAQI);
   }
 
-  bool pointsToConstantMemory(const MemoryLocation &Loc,
+  bool pointsToConstantMemory(const MemoryLocation &Loc, AAQueryInfo &AAQI,
                               bool OrLocal) override {
-    return Result.pointsToConstantMemory(Loc, OrLocal);
+    return Result.pointsToConstantMemory(Loc, AAQI, OrLocal);
   }
 
   ModRefInfo getArgModRefInfo(const CallBase *Call, unsigned ArgIdx) override {
@@ -813,14 +912,14 @@
     return Result.getModRefBehavior(F);
   }
 
-  ModRefInfo getModRefInfo(const CallBase *Call,
-                           const MemoryLocation &Loc) override {
-    return Result.getModRefInfo(Call, Loc);
+  ModRefInfo getModRefInfo(const CallBase *Call, const MemoryLocation &Loc,
+                           AAQueryInfo &AAQI) override {
+    return Result.getModRefInfo(Call, Loc, AAQI);
   }
 
-  ModRefInfo getModRefInfo(const CallBase *Call1,
-                           const CallBase *Call2) override {
-    return Result.getModRefInfo(Call1, Call2);
+  ModRefInfo getModRefInfo(const CallBase *Call1, const CallBase *Call2,
+                           AAQueryInfo &AAQI) override {
+    return Result.getModRefInfo(Call1, Call2, AAQI);
   }
 };
 
@@ -866,13 +965,16 @@
     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);
+    AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB,
+                      AAQueryInfo &AAQI) {
+      return AAR ? AAR->alias(LocA, LocB, AAQI)
+                 : CurrentResult.alias(LocA, LocB, AAQI);
     }
 
-    bool pointsToConstantMemory(const MemoryLocation &Loc, bool OrLocal) {
-      return AAR ? AAR->pointsToConstantMemory(Loc, OrLocal)
-                 : CurrentResult.pointsToConstantMemory(Loc, OrLocal);
+    bool pointsToConstantMemory(const MemoryLocation &Loc, AAQueryInfo &AAQI,
+                                bool OrLocal) {
+      return AAR ? AAR->pointsToConstantMemory(Loc, AAQI, OrLocal)
+                 : CurrentResult.pointsToConstantMemory(Loc, AAQI, OrLocal);
     }
 
     ModRefInfo getArgModRefInfo(const CallBase *Call, unsigned ArgIdx) {
@@ -889,14 +991,16 @@
       return AAR ? AAR->getModRefBehavior(F) : CurrentResult.getModRefBehavior(F);
     }
 
-    ModRefInfo getModRefInfo(const CallBase *Call, const MemoryLocation &Loc) {
-      return AAR ? AAR->getModRefInfo(Call, Loc)
-                 : CurrentResult.getModRefInfo(Call, Loc);
+    ModRefInfo getModRefInfo(const CallBase *Call, const MemoryLocation &Loc,
+                             AAQueryInfo &AAQI) {
+      return AAR ? AAR->getModRefInfo(Call, Loc, AAQI)
+                 : CurrentResult.getModRefInfo(Call, Loc, AAQI);
     }
 
-    ModRefInfo getModRefInfo(const CallBase *Call1, const CallBase *Call2) {
-      return AAR ? AAR->getModRefInfo(Call1, Call2)
-                 : CurrentResult.getModRefInfo(Call1, Call2);
+    ModRefInfo getModRefInfo(const CallBase *Call1, const CallBase *Call2,
+                             AAQueryInfo &AAQI) {
+      return AAR ? AAR->getModRefInfo(Call1, Call2, AAQI)
+                 : CurrentResult.getModRefInfo(Call1, Call2, AAQI);
     }
   };
 
@@ -920,11 +1024,13 @@
   AAResultsProxy getBestAAResults() { return AAResultsProxy(AAR, derived()); }
 
 public:
-  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB) {
+  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB,
+                    AAQueryInfo &AAQI) {
     return MayAlias;
   }
 
-  bool pointsToConstantMemory(const MemoryLocation &Loc, bool OrLocal) {
+  bool pointsToConstantMemory(const MemoryLocation &Loc, AAQueryInfo &AAQI,
+                              bool OrLocal) {
     return false;
   }
 
@@ -940,11 +1046,13 @@
     return FMRB_UnknownModRefBehavior;
   }
 
-  ModRefInfo getModRefInfo(const CallBase *Call, const MemoryLocation &Loc) {
+  ModRefInfo getModRefInfo(const CallBase *Call, const MemoryLocation &Loc,
+                           AAQueryInfo &AAQI) {
     return ModRefInfo::ModRef;
   }
 
-  ModRefInfo getModRefInfo(const CallBase *Call1, const CallBase *Call2) {
+  ModRefInfo getModRefInfo(const CallBase *Call1, const CallBase *Call2,
+                           AAQueryInfo &AAQI) {
     return ModRefInfo::ModRef;
   }
 };
Index: include/llvm/Analysis/BasicAliasAnalysis.h
===================================================================
--- include/llvm/Analysis/BasicAliasAnalysis.h
+++ include/llvm/Analysis/BasicAliasAnalysis.h
@@ -81,14 +81,18 @@
   bool invalidate(Function &Fn, const PreservedAnalyses &PA,
                   FunctionAnalysisManager::Invalidator &Inv);
 
-  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB);
+  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB,
+                    AAQueryInfo &AAQI);
 
-  ModRefInfo getModRefInfo(const CallBase *Call, const MemoryLocation &Loc);
+  ModRefInfo getModRefInfo(const CallBase *Call, const MemoryLocation &Loc,
+                           AAQueryInfo &AAQI);
 
-  ModRefInfo getModRefInfo(const CallBase *Call1, const CallBase *Call2);
+  ModRefInfo getModRefInfo(const CallBase *Call1, const CallBase *Call2,
+                           AAQueryInfo &AAQI);
 
   /// Chases pointers until we find a (constant global) or not.
-  bool pointsToConstantMemory(const MemoryLocation &Loc, bool OrLocal);
+  bool pointsToConstantMemory(const MemoryLocation &Loc, AAQueryInfo &AAQI,
+                              bool OrLocal);
 
   /// Get the location associated with a pointer argument of a callsite.
   ModRefInfo getArgModRefInfo(const CallBase *Call, unsigned ArgIdx);
@@ -140,13 +144,6 @@
     SmallVector<VariableGEPIndex, 4> VarIndices;
   };
 
-  /// Track alias queries to guard against recursion.
-  using LocPair = std::pair<MemoryLocation, MemoryLocation>;
-  using AliasCacheTy = SmallDenseMap<LocPair, AliasResult, 8>;
-  AliasCacheTy AliasCache;
-  using IsCapturedCacheTy = SmallDenseMap<const Value *, bool, 8>;
-  IsCapturedCacheTy IsCapturedCache;
-
   /// Tracks phi nodes we have visited.
   ///
   /// When interpret "Value" pointer equality as value equality we need to make
@@ -201,22 +198,24 @@
   AliasResult aliasGEP(const GEPOperator *V1, LocationSize V1Size,
                        const AAMDNodes &V1AAInfo, const Value *V2,
                        LocationSize V2Size, const AAMDNodes &V2AAInfo,
-                       const Value *UnderlyingV1, const Value *UnderlyingV2);
+                       const Value *UnderlyingV1, const Value *UnderlyingV2,
+                       AAQueryInfo &AAQI);
 
   AliasResult aliasPHI(const PHINode *PN, LocationSize PNSize,
                        const AAMDNodes &PNAAInfo, const Value *V2,
                        LocationSize V2Size, const AAMDNodes &V2AAInfo,
-                       const Value *UnderV2);
+                       const Value *UnderV2, AAQueryInfo &AAQI);
 
   AliasResult aliasSelect(const SelectInst *SI, LocationSize SISize,
                           const AAMDNodes &SIAAInfo, const Value *V2,
                           LocationSize V2Size, const AAMDNodes &V2AAInfo,
-                          const Value *UnderV2);
+                          const Value *UnderV2, AAQueryInfo &AAQI);
 
   AliasResult aliasCheck(const Value *V1, LocationSize V1Size,
                          AAMDNodes V1AATag, const Value *V2,
                          LocationSize V2Size, AAMDNodes V2AATag,
-                         const Value *O1 = nullptr, const Value *O2 = nullptr);
+                         AAQueryInfo &AAQI, const Value *O1 = nullptr,
+                         const Value *O2 = nullptr);
 };
 
 /// Analysis pass providing a never-invalidated alias analysis result.
Index: include/llvm/Analysis/CFLAndersAliasAnalysis.h
===================================================================
--- include/llvm/Analysis/CFLAndersAliasAnalysis.h
+++ include/llvm/Analysis/CFLAndersAliasAnalysis.h
@@ -60,7 +60,8 @@
   const cflaa::AliasSummary *getAliasSummary(const Function &);
 
   AliasResult query(const MemoryLocation &, const MemoryLocation &);
-  AliasResult alias(const MemoryLocation &, const MemoryLocation &);
+  AliasResult alias(const MemoryLocation &, const MemoryLocation &,
+                    AAQueryInfo &);
 
 private:
   /// Ensures that the given function is available in the cache.
Index: include/llvm/Analysis/CFLSteensAliasAnalysis.h
===================================================================
--- include/llvm/Analysis/CFLSteensAliasAnalysis.h
+++ include/llvm/Analysis/CFLSteensAliasAnalysis.h
@@ -69,7 +69,8 @@
 
   AliasResult query(const MemoryLocation &LocA, const MemoryLocation &LocB);
 
-  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB) {
+  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB,
+                    AAQueryInfo &AAQI) {
     if (LocA.Ptr == LocB.Ptr)
       return MustAlias;
 
@@ -79,11 +80,11 @@
     // 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 AAResultBase::alias(LocA, LocB);
+      return AAResultBase::alias(LocA, LocB, AAQI);
 
     AliasResult QueryResult = query(LocA, LocB);
     if (QueryResult == MayAlias)
-      return AAResultBase::alias(LocA, LocB);
+      return AAResultBase::alias(LocA, LocB, AAQI);
 
     return QueryResult;
   }
Index: include/llvm/Analysis/GlobalsModRef.h
===================================================================
--- include/llvm/Analysis/GlobalsModRef.h
+++ include/llvm/Analysis/GlobalsModRef.h
@@ -84,10 +84,12 @@
   //------------------------------------------------
   // Implement the AliasAnalysis API
   //
-  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB);
+  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB,
+                    AAQueryInfo &AAQI);
 
   using AAResultBase::getModRefInfo;
-  ModRefInfo getModRefInfo(const CallBase *Call, const MemoryLocation &Loc);
+  ModRefInfo getModRefInfo(const CallBase *Call, const MemoryLocation &Loc,
+                           AAQueryInfo &AAQI);
 
   /// getModRefBehavior - Return the behavior of the specified function if
   /// called from the specified call site.  The call site may be null in which
@@ -113,7 +115,7 @@
 
   bool isNonEscapingGlobalNoAlias(const GlobalValue *GV, const Value *V);
   ModRefInfo getModRefInfoForArgument(const CallBase *Call,
-                                      const GlobalValue *GV);
+                                      const GlobalValue *GV, AAQueryInfo &AAQI);
 };
 
 /// Analysis pass providing a never-invalidated alias analysis result.
Index: include/llvm/Analysis/MemorySSA.h
===================================================================
--- include/llvm/Analysis/MemorySSA.h
+++ include/llvm/Analysis/MemorySSA.h
@@ -830,13 +830,13 @@
                                       const MemoryUseOrDef *Template = nullptr);
 
 private:
-  class ClobberWalkerBase;
-  class CachingWalker;
-  class SkipSelfWalker;
+  template <class AliasAnalysisType> class ClobberWalkerBase;
+  template <class AliasAnalysisType> class CachingWalker;
+  template <class AliasAnalysisType> class SkipSelfWalker;
   class OptimizeUses;
 
-  CachingWalker *getWalkerImpl();
-  void buildMemorySSA();
+  CachingWalker<AliasAnalysis> *getWalkerImpl();
+  void buildMemorySSA(BatchAAResults &BAA);
   void optimizeUses();
 
   void prepareForMoveTo(MemoryAccess *, BasicBlock *);
@@ -850,7 +850,8 @@
   void markUnreachableAsLiveOnEntry(BasicBlock *BB);
   bool dominatesUse(const MemoryAccess *, const MemoryAccess *) const;
   MemoryPhi *createMemoryPhi(BasicBlock *BB);
-  MemoryUseOrDef *createNewAccess(Instruction *,
+  template <typename AliasAnalysisType>
+  MemoryUseOrDef *createNewAccess(Instruction *, AliasAnalysisType *,
                                   const MemoryUseOrDef *Template = nullptr);
   MemoryAccess *findDominatingDef(BasicBlock *, enum InsertionPlace);
   void placePHINodes(const SmallPtrSetImpl<BasicBlock *> &);
@@ -886,9 +887,9 @@
   mutable DenseMap<const MemoryAccess *, unsigned long> BlockNumbering;
 
   // Memory SSA building info
-  std::unique_ptr<ClobberWalkerBase> WalkerBase;
-  std::unique_ptr<CachingWalker> Walker;
-  std::unique_ptr<SkipSelfWalker> SkipWalker;
+  std::unique_ptr<ClobberWalkerBase<AliasAnalysis>> WalkerBase;
+  std::unique_ptr<CachingWalker<AliasAnalysis>> Walker;
+  std::unique_ptr<SkipSelfWalker<AliasAnalysis>> SkipWalker;
   unsigned NextID;
 };
 
Index: include/llvm/Analysis/ObjCARCAliasAnalysis.h
===================================================================
--- include/llvm/Analysis/ObjCARCAliasAnalysis.h
+++ include/llvm/Analysis/ObjCARCAliasAnalysis.h
@@ -52,14 +52,17 @@
     return false;
   }
 
-  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB);
-  bool pointsToConstantMemory(const MemoryLocation &Loc, bool OrLocal);
+  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB,
+                    AAQueryInfo &AAQI);
+  bool pointsToConstantMemory(const MemoryLocation &Loc, AAQueryInfo &AAQI,
+                              bool OrLocal);
 
   using AAResultBase::getModRefBehavior;
   FunctionModRefBehavior getModRefBehavior(const Function *F);
 
   using AAResultBase::getModRefInfo;
-  ModRefInfo getModRefInfo(const CallBase *Call, const MemoryLocation &Loc);
+  ModRefInfo getModRefInfo(const CallBase *Call, const MemoryLocation &Loc,
+                           AAQueryInfo &AAQI);
 };
 
 /// Analysis pass providing a never-invalidated alias analysis result.
Index: include/llvm/Analysis/ScalarEvolutionAliasAnalysis.h
===================================================================
--- include/llvm/Analysis/ScalarEvolutionAliasAnalysis.h
+++ include/llvm/Analysis/ScalarEvolutionAliasAnalysis.h
@@ -30,7 +30,8 @@
   explicit SCEVAAResult(ScalarEvolution &SE) : AAResultBase(), SE(SE) {}
   SCEVAAResult(SCEVAAResult &&Arg) : AAResultBase(std::move(Arg)), SE(Arg.SE) {}
 
-  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB);
+  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB,
+                    AAQueryInfo &AAQI);
 
 private:
   Value *GetBaseValue(const SCEV *S);
Index: include/llvm/Analysis/ScopedNoAliasAA.h
===================================================================
--- include/llvm/Analysis/ScopedNoAliasAA.h
+++ include/llvm/Analysis/ScopedNoAliasAA.h
@@ -39,9 +39,12 @@
     return false;
   }
 
-  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB);
-  ModRefInfo getModRefInfo(const CallBase *Call, const MemoryLocation &Loc);
-  ModRefInfo getModRefInfo(const CallBase *Call1, const CallBase *Call2);
+  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB,
+                    AAQueryInfo &AAQI);
+  ModRefInfo getModRefInfo(const CallBase *Call, const MemoryLocation &Loc,
+                           AAQueryInfo &AAQI);
+  ModRefInfo getModRefInfo(const CallBase *Call1, const CallBase *Call2,
+                           AAQueryInfo &AAQI);
 
 private:
   bool mayAliasInScopes(const MDNode *Scopes, const MDNode *NoAlias) const;
Index: include/llvm/Analysis/TypeBasedAliasAnalysis.h
===================================================================
--- include/llvm/Analysis/TypeBasedAliasAnalysis.h
+++ include/llvm/Analysis/TypeBasedAliasAnalysis.h
@@ -40,12 +40,16 @@
     return false;
   }
 
-  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB);
-  bool pointsToConstantMemory(const MemoryLocation &Loc, bool OrLocal);
+  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB,
+                    AAQueryInfo &AAQI);
+  bool pointsToConstantMemory(const MemoryLocation &Loc, AAQueryInfo &AAQI,
+                              bool OrLocal);
   FunctionModRefBehavior getModRefBehavior(const CallBase *Call);
   FunctionModRefBehavior getModRefBehavior(const Function *F);
-  ModRefInfo getModRefInfo(const CallBase *Call, const MemoryLocation &Loc);
-  ModRefInfo getModRefInfo(const CallBase *Call1, const CallBase *Call2);
+  ModRefInfo getModRefInfo(const CallBase *Call, const MemoryLocation &Loc,
+                           AAQueryInfo &AAQI);
+  ModRefInfo getModRefInfo(const CallBase *Call1, const CallBase *Call2,
+                           AAQueryInfo &AAQI);
 
 private:
   bool Aliases(const MDNode *A, const MDNode *B) const;
Index: lib/Analysis/AliasAnalysis.cpp
===================================================================
--- lib/Analysis/AliasAnalysis.cpp
+++ lib/Analysis/AliasAnalysis.cpp
@@ -99,8 +99,15 @@
 
 AliasResult AAResults::alias(const MemoryLocation &LocA,
                              const MemoryLocation &LocB) {
+  AAQueryInfo AAQIP;
+  auto Result = alias(LocA, LocB, AAQIP);
+  return Result;
+}
+
+AliasResult AAResults::alias(const MemoryLocation &LocA,
+                             const MemoryLocation &LocB, AAQueryInfo &AAQI) {
   for (const auto &AA : AAs) {
-    auto Result = AA->alias(LocA, LocB);
+    auto Result = AA->alias(LocA, LocB, AAQI);
     if (Result != MayAlias)
       return Result;
   }
@@ -109,8 +116,15 @@
 
 bool AAResults::pointsToConstantMemory(const MemoryLocation &Loc,
                                        bool OrLocal) {
+  AAQueryInfo AAQIP;
+  auto Result = pointsToConstantMemory(Loc, AAQIP, OrLocal);
+  return Result;
+}
+
+bool AAResults::pointsToConstantMemory(const MemoryLocation &Loc,
+                                       AAQueryInfo &AAQI, bool OrLocal) {
   for (const auto &AA : AAs)
-    if (AA->pointsToConstantMemory(Loc, OrLocal))
+    if (AA->pointsToConstantMemory(Loc, AAQI, OrLocal))
       return true;
 
   return false;
@@ -131,10 +145,16 @@
 }
 
 ModRefInfo AAResults::getModRefInfo(Instruction *I, const CallBase *Call2) {
+  AAQueryInfo AAQIP;
+  return getModRefInfo(I, Call2, AAQIP);
+}
+
+ModRefInfo AAResults::getModRefInfo(Instruction *I, const CallBase *Call2,
+                                    AAQueryInfo &AAQI) {
   // We may have two calls.
   if (const auto *Call1 = dyn_cast<CallBase>(I)) {
     // Check if the two calls modify the same memory.
-    return getModRefInfo(Call1, Call2);
+    return getModRefInfo(Call1, Call2, AAQI);
   } else if (I->isFenceLike()) {
     // If this is a fence, just return ModRef.
     return ModRefInfo::ModRef;
@@ -144,7 +164,7 @@
     // is that if the call references what this instruction
     // defines, it must be clobbered by this location.
     const MemoryLocation DefLoc = MemoryLocation::get(I);
-    ModRefInfo MR = getModRefInfo(Call2, DefLoc);
+    ModRefInfo MR = getModRefInfo(Call2, DefLoc, AAQI);
     if (isModOrRefSet(MR))
       return setModAndRef(MR);
   }
@@ -153,10 +173,18 @@
 
 ModRefInfo AAResults::getModRefInfo(const CallBase *Call,
                                     const MemoryLocation &Loc) {
+  AAQueryInfo AAQIP;
+  auto Result = getModRefInfo(Call, Loc, AAQIP);
+  return Result;
+}
+
+ModRefInfo AAResults::getModRefInfo(const CallBase *Call,
+                                    const MemoryLocation &Loc,
+                                    AAQueryInfo &AAQI) {
   ModRefInfo Result = ModRefInfo::ModRef;
 
   for (const auto &AA : AAs) {
-    Result = intersectModRef(Result, AA->getModRefInfo(Call, Loc));
+    Result = intersectModRef(Result, AA->getModRefInfo(Call, Loc, AAQI));
 
     // Early-exit the moment we reach the bottom of the lattice.
     if (isNoModRef(Result))
@@ -214,10 +242,17 @@
 
 ModRefInfo AAResults::getModRefInfo(const CallBase *Call1,
                                     const CallBase *Call2) {
+  AAQueryInfo AAQIP;
+  auto Result = getModRefInfo(Call1, Call2, AAQIP);
+  return Result;
+}
+
+ModRefInfo AAResults::getModRefInfo(const CallBase *Call1,
+                                    const CallBase *Call2, AAQueryInfo &AAQI) {
   ModRefInfo Result = ModRefInfo::ModRef;
 
   for (const auto &AA : AAs) {
-    Result = intersectModRef(Result, AA->getModRefInfo(Call1, Call2));
+    Result = intersectModRef(Result, AA->getModRefInfo(Call1, Call2, AAQI));
 
     // Early-exit the moment we reach the bottom of the lattice.
     if (isNoModRef(Result))
@@ -396,6 +431,12 @@
 
 ModRefInfo AAResults::getModRefInfo(const LoadInst *L,
                                     const MemoryLocation &Loc) {
+  AAQueryInfo AAQIP;
+  return getModRefInfo(L, Loc, AAQIP);
+}
+ModRefInfo AAResults::getModRefInfo(const LoadInst *L,
+                                    const MemoryLocation &Loc,
+                                    AAQueryInfo &AAQI) {
   // Be conservative in the face of atomic.
   if (isStrongerThan(L->getOrdering(), AtomicOrdering::Unordered))
     return ModRefInfo::ModRef;
@@ -403,7 +444,7 @@
   // If the load address doesn't alias the given address, it doesn't read
   // or write the specified memory.
   if (Loc.Ptr) {
-    AliasResult AR = alias(MemoryLocation::get(L), Loc);
+    AliasResult AR = alias(MemoryLocation::get(L), Loc, AAQI);
     if (AR == NoAlias)
       return ModRefInfo::NoModRef;
     if (AR == MustAlias)
@@ -415,12 +456,18 @@
 
 ModRefInfo AAResults::getModRefInfo(const StoreInst *S,
                                     const MemoryLocation &Loc) {
+  AAQueryInfo AAQIP;
+  return getModRefInfo(S, Loc, AAQIP);
+}
+ModRefInfo AAResults::getModRefInfo(const StoreInst *S,
+                                    const MemoryLocation &Loc,
+                                    AAQueryInfo &AAQI) {
   // Be conservative in the face of atomic.
   if (isStrongerThan(S->getOrdering(), AtomicOrdering::Unordered))
     return ModRefInfo::ModRef;
 
   if (Loc.Ptr) {
-    AliasResult AR = alias(MemoryLocation::get(S), Loc);
+    AliasResult AR = alias(MemoryLocation::get(S), Loc, AAQI);
     // If the store address cannot alias the pointer in question, then the
     // specified memory cannot be modified by the store.
     if (AR == NoAlias)
@@ -428,7 +475,7 @@
 
     // If the pointer is a pointer to constant memory, then it could not have
     // been modified by this store.
-    if (pointsToConstantMemory(Loc))
+    if (pointsToConstantMemory(Loc, AAQI))
       return ModRefInfo::NoModRef;
 
     // If the store address aliases the pointer as must alias, set Must.
@@ -441,17 +488,31 @@
 }
 
 ModRefInfo AAResults::getModRefInfo(const FenceInst *S, const MemoryLocation &Loc) {
+  AAQueryInfo AAQIP;
+  return getModRefInfo(S, Loc, AAQIP);
+}
+
+ModRefInfo AAResults::getModRefInfo(const FenceInst *S,
+                                    const MemoryLocation &Loc,
+                                    AAQueryInfo &AAQI) {
   // If we know that the location is a constant memory location, the fence
   // cannot modify this location.
-  if (Loc.Ptr && pointsToConstantMemory(Loc))
+  if (Loc.Ptr && pointsToConstantMemory(Loc, AAQI))
     return ModRefInfo::Ref;
   return ModRefInfo::ModRef;
 }
 
 ModRefInfo AAResults::getModRefInfo(const VAArgInst *V,
                                     const MemoryLocation &Loc) {
+  AAQueryInfo AAQIP;
+  return getModRefInfo(V, Loc, AAQIP);
+}
+
+ModRefInfo AAResults::getModRefInfo(const VAArgInst *V,
+                                    const MemoryLocation &Loc,
+                                    AAQueryInfo &AAQI) {
   if (Loc.Ptr) {
-    AliasResult AR = alias(MemoryLocation::get(V), Loc);
+    AliasResult AR = alias(MemoryLocation::get(V), Loc, AAQI);
     // If the va_arg address cannot alias the pointer in question, then the
     // specified memory cannot be accessed by the va_arg.
     if (AR == NoAlias)
@@ -459,7 +520,7 @@
 
     // If the pointer is a pointer to constant memory, then it could not have
     // been modified by this va_arg.
-    if (pointsToConstantMemory(Loc))
+    if (pointsToConstantMemory(Loc, AAQI))
       return ModRefInfo::NoModRef;
 
     // If the va_arg aliases the pointer as must alias, set Must.
@@ -473,10 +534,17 @@
 
 ModRefInfo AAResults::getModRefInfo(const CatchPadInst *CatchPad,
                                     const MemoryLocation &Loc) {
+  AAQueryInfo AAQIP;
+  return getModRefInfo(CatchPad, Loc, AAQIP);
+}
+
+ModRefInfo AAResults::getModRefInfo(const CatchPadInst *CatchPad,
+                                    const MemoryLocation &Loc,
+                                    AAQueryInfo &AAQI) {
   if (Loc.Ptr) {
     // If the pointer is a pointer to constant memory,
     // then it could not have been modified by this catchpad.
-    if (pointsToConstantMemory(Loc))
+    if (pointsToConstantMemory(Loc, AAQI))
       return ModRefInfo::NoModRef;
   }
 
@@ -486,10 +554,17 @@
 
 ModRefInfo AAResults::getModRefInfo(const CatchReturnInst *CatchRet,
                                     const MemoryLocation &Loc) {
+  AAQueryInfo AAQIP;
+  return getModRefInfo(CatchRet, Loc, AAQIP);
+}
+
+ModRefInfo AAResults::getModRefInfo(const CatchReturnInst *CatchRet,
+                                    const MemoryLocation &Loc,
+                                    AAQueryInfo &AAQI) {
   if (Loc.Ptr) {
     // If the pointer is a pointer to constant memory,
     // then it could not have been modified by this catchpad.
-    if (pointsToConstantMemory(Loc))
+    if (pointsToConstantMemory(Loc, AAQI))
       return ModRefInfo::NoModRef;
   }
 
@@ -499,12 +574,19 @@
 
 ModRefInfo AAResults::getModRefInfo(const AtomicCmpXchgInst *CX,
                                     const MemoryLocation &Loc) {
+  AAQueryInfo AAQIP;
+  return getModRefInfo(CX, Loc, AAQIP);
+}
+
+ModRefInfo AAResults::getModRefInfo(const AtomicCmpXchgInst *CX,
+                                    const MemoryLocation &Loc,
+                                    AAQueryInfo &AAQI) {
   // Acquire/Release cmpxchg has properties that matter for arbitrary addresses.
   if (isStrongerThanMonotonic(CX->getSuccessOrdering()))
     return ModRefInfo::ModRef;
 
   if (Loc.Ptr) {
-    AliasResult AR = alias(MemoryLocation::get(CX), Loc);
+    AliasResult AR = alias(MemoryLocation::get(CX), Loc, AAQI);
     // If the cmpxchg address does not alias the location, it does not access
     // it.
     if (AR == NoAlias)
@@ -520,12 +602,19 @@
 
 ModRefInfo AAResults::getModRefInfo(const AtomicRMWInst *RMW,
                                     const MemoryLocation &Loc) {
+  AAQueryInfo AAQIP;
+  return getModRefInfo(RMW, Loc, AAQIP);
+}
+
+ModRefInfo AAResults::getModRefInfo(const AtomicRMWInst *RMW,
+                                    const MemoryLocation &Loc,
+                                    AAQueryInfo &AAQI) {
   // Acquire/Release atomicrmw has properties that matter for arbitrary addresses.
   if (isStrongerThanMonotonic(RMW->getOrdering()))
     return ModRefInfo::ModRef;
 
   if (Loc.Ptr) {
-    AliasResult AR = alias(MemoryLocation::get(RMW), Loc);
+    AliasResult AR = alias(MemoryLocation::get(RMW), Loc, AAQI);
     // If the atomicrmw address does not alias the location, it does not access
     // it.
     if (AR == NoAlias)
Index: lib/Analysis/BasicAliasAnalysis.cpp
===================================================================
--- lib/Analysis/BasicAliasAnalysis.cpp
+++ lib/Analysis/BasicAliasAnalysis.cpp
@@ -631,7 +631,7 @@
 /// the function, with global constants being considered local to all
 /// functions.
 bool BasicAAResult::pointsToConstantMemory(const MemoryLocation &Loc,
-                                           bool OrLocal) {
+                                           AAQueryInfo &AAQI, bool OrLocal) {
   assert(Visited.empty() && "Visited must be cleared after use!");
 
   unsigned MaxLookup = 8;
@@ -641,7 +641,7 @@
     const Value *V = GetUnderlyingObject(Worklist.pop_back_val(), DL);
     if (!Visited.insert(V).second) {
       Visited.clear();
-      return AAResultBase::pointsToConstantMemory(Loc, OrLocal);
+      return AAResultBase::pointsToConstantMemory(Loc, AAQI, OrLocal);
     }
 
     // An alloca instruction defines local memory.
@@ -655,7 +655,7 @@
       // others.  GV may even be a declaration, not a definition.
       if (!GV->isConstant()) {
         Visited.clear();
-        return AAResultBase::pointsToConstantMemory(Loc, OrLocal);
+        return AAResultBase::pointsToConstantMemory(Loc, AAQI, OrLocal);
       }
       continue;
     }
@@ -673,7 +673,7 @@
       // Don't bother inspecting phi nodes with many operands.
       if (PN->getNumIncomingValues() > MaxLookup) {
         Visited.clear();
-        return AAResultBase::pointsToConstantMemory(Loc, OrLocal);
+        return AAResultBase::pointsToConstantMemory(Loc, AAQI, OrLocal);
       }
       for (Value *IncValue : PN->incoming_values())
         Worklist.push_back(IncValue);
@@ -682,7 +682,7 @@
 
     // Otherwise be conservative.
     Visited.clear();
-    return AAResultBase::pointsToConstantMemory(Loc, OrLocal);
+    return AAResultBase::pointsToConstantMemory(Loc, AAQI, OrLocal);
   } while (!Worklist.empty() && --MaxLookup);
 
   Visited.clear();
@@ -817,25 +817,25 @@
 #endif
 
 AliasResult BasicAAResult::alias(const MemoryLocation &LocA,
-                                 const MemoryLocation &LocB) {
+                                 const MemoryLocation &LocB,
+                                 AAQueryInfo &AAQI) {
   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())
+  auto CacheIt = AAQI.AliasCache.find(AAQueryInfo::LocPair(LocA, LocB));
+  if (CacheIt != AAQI.AliasCache.end())
+    return CacheIt->second;
+
+  CacheIt = AAQI.AliasCache.find(AAQueryInfo::LocPair(LocB, LocA));
+  if (CacheIt != AAQI.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();
-  IsCapturedCache.shrink_and_clear();
+                                 LocB.Size, LocB.AATags, AAQI);
+
   VisitedPhiBBs.clear();
   return Alias;
 }
@@ -847,7 +847,8 @@
 /// say much about this query.  We do, however, use simple "address taken"
 /// analysis on local objects.
 ModRefInfo BasicAAResult::getModRefInfo(const CallBase *Call,
-                                        const MemoryLocation &Loc) {
+                                        const MemoryLocation &Loc,
+                                        AAQueryInfo &AAQI) {
   assert(notDifferentParent(Call, Loc.Ptr) &&
          "AliasAnalysis query involving multiple functions!");
 
@@ -874,7 +875,7 @@
   // then the call can not mod/ref the pointer unless the call takes the pointer
   // as an argument, and itself doesn't capture it.
   if (!isa<Constant>(Object) && Call != Object &&
-      isNonEscapingLocalObject(Object)) {
+      isNonEscapingLocalObject(Object, &AAQI.IsCapturedCache)) {
 
     // Optimistically assume that call doesn't touch Object and check this
     // assumption in the following loop.
@@ -900,8 +901,8 @@
 
       // If this is a no-capture pointer argument, see if we can tell that it
       // is impossible to alias the pointer we're checking.
-      AliasResult AR =
-          getBestAAResults().alias(MemoryLocation(*CI), MemoryLocation(Object));
+      AliasResult AR = getBestAAResults().alias(MemoryLocation(*CI),
+                                                MemoryLocation(Object), AAQI);
       if (AR != MustAlias)
         IsMustAlias = false;
       // Operand doesn't alias 'Object', continue looking for other aliases
@@ -947,7 +948,7 @@
   if (isMallocOrCallocLikeFn(Call, &TLI)) {
     // Be conservative if the accessed pointer may alias the allocation -
     // fallback to the generic handling below.
-    if (getBestAAResults().alias(MemoryLocation(Call), Loc) == NoAlias)
+    if (getBestAAResults().alias(MemoryLocation(Call), Loc, AAQI) == NoAlias)
       return ModRefInfo::NoModRef;
   }
 
@@ -959,11 +960,11 @@
     AliasResult SrcAA, DestAA;
 
     if ((SrcAA = getBestAAResults().alias(MemoryLocation::getForSource(Inst),
-                                          Loc)) == MustAlias)
+                                          Loc, AAQI)) == MustAlias)
       // Loc is exactly the memcpy source thus disjoint from memcpy dest.
       return ModRefInfo::Ref;
     if ((DestAA = getBestAAResults().alias(MemoryLocation::getForDest(Inst),
-                                           Loc)) == MustAlias)
+                                           Loc, AAQI)) == MustAlias)
       // The converse case.
       return ModRefInfo::Mod;
 
@@ -1019,11 +1020,12 @@
     return ModRefInfo::Ref;
 
   // The AAResultBase base class has some smarts, lets use them.
-  return AAResultBase::getModRefInfo(Call, Loc);
+  return AAResultBase::getModRefInfo(Call, Loc, AAQI);
 }
 
 ModRefInfo BasicAAResult::getModRefInfo(const CallBase *Call1,
-                                        const CallBase *Call2) {
+                                        const CallBase *Call2,
+                                        AAQueryInfo &AAQI) {
   // While the assume intrinsic is marked as arbitrarily writing so that
   // proper control dependencies will be maintained, it never aliases any
   // particular memory location.
@@ -1053,7 +1055,7 @@
                : ModRefInfo::NoModRef;
 
   // The AAResultBase base class has some smarts, lets use them.
-  return AAResultBase::getModRefInfo(Call1, Call2);
+  return AAResultBase::getModRefInfo(Call1, Call2, AAQI);
 }
 
 /// Provide ad-hoc rules to disambiguate accesses through two GEP operators,
@@ -1285,11 +1287,10 @@
 /// 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
-BasicAAResult::aliasGEP(const GEPOperator *GEP1, LocationSize V1Size,
-                        const AAMDNodes &V1AAInfo, const Value *V2,
-                        LocationSize V2Size, const AAMDNodes &V2AAInfo,
-                        const Value *UnderlyingV1, const Value *UnderlyingV2) {
+AliasResult BasicAAResult::aliasGEP(
+    const GEPOperator *GEP1, LocationSize V1Size, const AAMDNodes &V1AAInfo,
+    const Value *V2, LocationSize V2Size, const AAMDNodes &V2AAInfo,
+    const Value *UnderlyingV1, const Value *UnderlyingV2, AAQueryInfo &AAQI) {
   DecomposedGEP DecompGEP1, DecompGEP2;
   unsigned MaxPointerSize = getMaxPointerSize(DL);
   DecompGEP1.StructOffset = DecompGEP1.OtherOffset = APInt(MaxPointerSize, 0);
@@ -1325,14 +1326,14 @@
     // Do the base pointers alias?
     AliasResult BaseAlias =
         aliasCheck(UnderlyingV1, LocationSize::unknown(), AAMDNodes(),
-                   UnderlyingV2, LocationSize::unknown(), AAMDNodes());
+                   UnderlyingV2, LocationSize::unknown(), AAMDNodes(), AAQI);
 
     // 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);
+      AliasResult PreciseBaseAlias = aliasCheck(
+          UnderlyingV1, V1Size, V1AAInfo, UnderlyingV2, V2Size, V2AAInfo, AAQI);
       if (PreciseBaseAlias == NoAlias) {
         // See if the computed offset from the common pointer tells us about the
         // relation of the resulting pointer.
@@ -1387,9 +1388,9 @@
     if (V1Size == LocationSize::unknown() && V2Size == LocationSize::unknown())
       return MayAlias;
 
-    AliasResult R =
-        aliasCheck(UnderlyingV1, LocationSize::unknown(), AAMDNodes(), V2,
-                   LocationSize::unknown(), V2AAInfo, nullptr, UnderlyingV2);
+    AliasResult R = aliasCheck(UnderlyingV1, LocationSize::unknown(),
+                               AAMDNodes(), V2, LocationSize::unknown(),
+                               V2AAInfo, AAQI, nullptr, UnderlyingV2);
     if (R != MustAlias) {
       // If V2 may alias GEP base pointer, conservatively returns MayAlias.
       // If V2 is known not to alias GEP base pointer, then the two values
@@ -1523,37 +1524,35 @@
 
 /// Provides a bunch of ad-hoc rules to disambiguate a Select instruction
 /// against another.
-AliasResult BasicAAResult::aliasSelect(const SelectInst *SI,
-                                       LocationSize SISize,
-                                       const AAMDNodes &SIAAInfo,
-                                       const Value *V2, LocationSize V2Size,
-                                       const AAMDNodes &V2AAInfo,
-                                       const Value *UnderV2) {
+AliasResult
+BasicAAResult::aliasSelect(const SelectInst *SI, LocationSize SISize,
+                           const AAMDNodes &SIAAInfo, const Value *V2,
+                           LocationSize V2Size, const AAMDNodes &V2AAInfo,
+                           const Value *UnderV2, AAQueryInfo &AAQI) {
   // 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);
+      AliasResult Alias =
+          aliasCheck(SI->getTrueValue(), SISize, SIAAInfo, SI2->getTrueValue(),
+                     V2Size, V2AAInfo, AAQI);
       if (Alias == MayAlias)
         return MayAlias;
       AliasResult ThisAlias =
           aliasCheck(SI->getFalseValue(), SISize, SIAAInfo,
-                     SI2->getFalseValue(), V2Size, V2AAInfo);
+                     SI2->getFalseValue(), V2Size, V2AAInfo, AAQI);
       return MergeAliasResults(ThisAlias, Alias);
     }
 
   // If both arms of the Select node NoAlias or MustAlias V2, then returns
   // NoAlias / MustAlias. Otherwise, returns MayAlias.
-  AliasResult Alias =
-      aliasCheck(V2, V2Size, V2AAInfo, SI->getTrueValue(),
-                 SISize, SIAAInfo, UnderV2);
+  AliasResult Alias = aliasCheck(V2, V2Size, V2AAInfo, SI->getTrueValue(),
+                                 SISize, SIAAInfo, AAQI, UnderV2);
   if (Alias == MayAlias)
     return MayAlias;
 
-  AliasResult ThisAlias =
-      aliasCheck(V2, V2Size, V2AAInfo, SI->getFalseValue(), SISize, SIAAInfo,
-                 UnderV2);
+  AliasResult ThisAlias = aliasCheck(V2, V2Size, V2AAInfo, SI->getFalseValue(),
+                                     SISize, SIAAInfo, AAQI, UnderV2);
   return MergeAliasResults(ThisAlias, Alias);
 }
 
@@ -1563,7 +1562,7 @@
                                     const AAMDNodes &PNAAInfo, const Value *V2,
                                     LocationSize V2Size,
                                     const AAMDNodes &V2AAInfo,
-                                    const Value *UnderV2) {
+                                    const Value *UnderV2, AAQueryInfo &AAQI) {
   // Track phi nodes we have visited. We use this information when we determine
   // value equivalence.
   VisitedPhiBBs.insert(PN->getParent());
@@ -1573,8 +1572,8 @@
   // on corresponding edges.
   if (const PHINode *PN2 = dyn_cast<PHINode>(V2))
     if (PN2->getParent() == PN->getParent()) {
-      LocPair Locs(MemoryLocation(PN, PNSize, PNAAInfo),
-                   MemoryLocation(V2, V2Size, V2AAInfo));
+      AAQueryInfo::LocPair Locs(MemoryLocation(PN, PNSize, PNAAInfo),
+                                MemoryLocation(V2, V2Size, V2AAInfo));
       if (PN > V2)
         std::swap(Locs.first, Locs.second);
       // Analyse the PHIs' inputs under the assumption that the PHIs are
@@ -1588,8 +1587,8 @@
       AliasResult OrigAliasResult;
       {
         // Limited lifetime iterator invalidated by the aliasCheck call below.
-        auto CacheIt = AliasCache.find(Locs);
-        assert((CacheIt != AliasCache.end()) &&
+        auto CacheIt = AAQI.AliasCache.find(Locs);
+        assert((CacheIt != AAQI.AliasCache.end()) &&
                "There must exist an entry for the phi node");
         OrigAliasResult = CacheIt->second;
         CacheIt->second = NoAlias;
@@ -1599,7 +1598,7 @@
         AliasResult ThisAlias =
             aliasCheck(PN->getIncomingValue(i), PNSize, PNAAInfo,
                        PN2->getIncomingValueForBlock(PN->getIncomingBlock(i)),
-                       V2Size, V2AAInfo);
+                       V2Size, V2AAInfo, AAQI);
         Alias = MergeAliasResults(ThisAlias, Alias);
         if (Alias == MayAlias)
           break;
@@ -1607,7 +1606,8 @@
 
       // Reset if speculation failed.
       if (Alias != NoAlias) {
-        auto Pair = AliasCache.insert(std::make_pair(Locs, OrigAliasResult));
+        auto Pair =
+            AAQI.AliasCache.insert(std::make_pair(Locs, OrigAliasResult));
         assert(!Pair.second && "Entry must have existed");
         Pair.first->second = OrigAliasResult;
       }
@@ -1684,9 +1684,8 @@
   if (isRecursive)
     PNSize = LocationSize::unknown();
 
-  AliasResult Alias =
-      aliasCheck(V2, V2Size, V2AAInfo, V1Srcs[0],
-                 PNSize, PNAAInfo, UnderV2);
+  AliasResult Alias = aliasCheck(V2, V2Size, V2AAInfo, V1Srcs[0], PNSize,
+                                 PNAAInfo, AAQI, UnderV2);
 
   // Early exit if the check of the first PHI source against V2 is MayAlias.
   // Other results are not possible.
@@ -1699,7 +1698,7 @@
     Value *V = V1Srcs[i];
 
     AliasResult ThisAlias =
-        aliasCheck(V2, V2Size, V2AAInfo, V, PNSize, PNAAInfo, UnderV2);
+        aliasCheck(V2, V2Size, V2AAInfo, V, PNSize, PNAAInfo, AAQI, UnderV2);
     Alias = MergeAliasResults(ThisAlias, Alias);
     if (Alias == MayAlias)
       break;
@@ -1713,7 +1712,8 @@
 AliasResult BasicAAResult::aliasCheck(const Value *V1, LocationSize V1Size,
                                       AAMDNodes V1AAInfo, const Value *V2,
                                       LocationSize V2Size, AAMDNodes V2AAInfo,
-                                      const Value *O1, const Value *O2) {
+                                      AAQueryInfo &AAQI, const Value *O1,
+                                      const Value *O2) {
   // If either of the memory references is empty, it doesn't matter what the
   // pointer values are.
   if (V1Size.isZero() || V2Size.isZero())
@@ -1781,9 +1781,11 @@
     // temporary store the nocapture argument's value in a temporary memory
     // location if that memory location doesn't escape. Or it may pass a
     // nocapture value to other functions as long as they don't capture it.
-    if (isEscapeSource(O1) && isNonEscapingLocalObject(O2, &IsCapturedCache))
+    if (isEscapeSource(O1) &&
+        isNonEscapingLocalObject(O2, &AAQI.IsCapturedCache))
       return NoAlias;
-    if (isEscapeSource(O2) && isNonEscapingLocalObject(O1, &IsCapturedCache))
+    if (isEscapeSource(O2) &&
+        isNonEscapingLocalObject(O1, &AAQI.IsCapturedCache))
       return NoAlias;
   }
 
@@ -1798,12 +1800,12 @@
 
   // 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));
+  AAQueryInfo::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 =
-      AliasCache.try_emplace(Locs, MayAlias);
+  std::pair<AAQueryInfo::AliasCacheT::iterator, bool> Pair =
+      AAQI.AliasCache.try_emplace(Locs, MayAlias);
   if (!Pair.second)
     return Pair.first->second;
 
@@ -1817,9 +1819,13 @@
   }
   if (const GEPOperator *GV1 = dyn_cast<GEPOperator>(V1)) {
     AliasResult Result =
-        aliasGEP(GV1, V1Size, V1AAInfo, V2, V2Size, V2AAInfo, O1, O2);
-    if (Result != MayAlias)
-      return AliasCache[Locs] = Result;
+        aliasGEP(GV1, V1Size, V1AAInfo, V2, V2Size, V2AAInfo, O1, O2, AAQI);
+    if (Result != MayAlias) {
+      auto ItInsPair = AAQI.AliasCache.insert(std::make_pair(Locs, Result));
+      assert(!ItInsPair.second && "Entry must have existed");
+      ItInsPair.first->second = Result;
+      return Result;
+    }
   }
 
   if (isa<PHINode>(V2) && !isa<PHINode>(V1)) {
@@ -1829,10 +1835,10 @@
     std::swap(V1AAInfo, V2AAInfo);
   }
   if (const PHINode *PN = dyn_cast<PHINode>(V1)) {
-    AliasResult Result = aliasPHI(PN, V1Size, V1AAInfo,
-                                  V2, V2Size, V2AAInfo, O2);
+    AliasResult Result =
+        aliasPHI(PN, V1Size, V1AAInfo, V2, V2Size, V2AAInfo, O2, AAQI);
     if (Result != MayAlias) {
-      Pair = AliasCache.try_emplace(Locs, Result);
+      Pair = AAQI.AliasCache.try_emplace(Locs, Result);
       assert(!Pair.second && "Entry must have existed");
       return Pair.first->second = Result;
     }
@@ -1846,9 +1852,9 @@
   }
   if (const SelectInst *S1 = dyn_cast<SelectInst>(V1)) {
     AliasResult Result =
-        aliasSelect(S1, V1Size, V1AAInfo, V2, V2Size, V2AAInfo, O2);
+        aliasSelect(S1, V1Size, V1AAInfo, V2, V2Size, V2AAInfo, O2, AAQI);
     if (Result != MayAlias) {
-      Pair = AliasCache.try_emplace(Locs, Result);
+      Pair = AAQI.AliasCache.try_emplace(Locs, Result);
       assert(!Pair.second && "Entry must have existed");
       return Pair.first->second = Result;
     }
@@ -1860,7 +1866,7 @@
     if (V1Size.isPrecise() && V2Size.isPrecise() &&
         (isObjectSize(O1, V1Size.getValue(), DL, TLI, NullIsValidLocation) ||
          isObjectSize(O2, V2Size.getValue(), DL, TLI, NullIsValidLocation))) {
-      Pair = AliasCache.try_emplace(Locs, PartialAlias);
+      Pair = AAQI.AliasCache.try_emplace(Locs, PartialAlias);
       assert(!Pair.second && "Entry must have existed");
       return Pair.first->second = PartialAlias;
     }
@@ -1868,8 +1874,8 @@
   // 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);
-  Pair = AliasCache.try_emplace(Locs, Result);
+  AliasResult Result = getBestAAResults().alias(Locs.first, Locs.second, AAQI);
+  Pair = AAQI.AliasCache.try_emplace(Locs, Result);
   assert(!Pair.second && "Entry must have existed");
   return Pair.first->second = Result;
 }
Index: lib/Analysis/CFLAndersAliasAnalysis.cpp
===================================================================
--- lib/Analysis/CFLAndersAliasAnalysis.cpp
+++ lib/Analysis/CFLAndersAliasAnalysis.cpp
@@ -875,7 +875,8 @@
 }
 
 AliasResult CFLAndersAAResult::alias(const MemoryLocation &LocA,
-                                     const MemoryLocation &LocB) {
+                                     const MemoryLocation &LocB,
+                                     AAQueryInfo &AAQI) {
   if (LocA.Ptr == LocB.Ptr)
     return MustAlias;
 
@@ -885,11 +886,11 @@
   // 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 AAResultBase::alias(LocA, LocB);
+    return AAResultBase::alias(LocA, LocB, AAQI);
 
   AliasResult QueryResult = query(LocA, LocB);
   if (QueryResult == MayAlias)
-    return AAResultBase::alias(LocA, LocB);
+    return AAResultBase::alias(LocA, LocB, AAQI);
 
   return QueryResult;
 }
Index: lib/Analysis/GlobalsModRef.cpp
===================================================================
--- lib/Analysis/GlobalsModRef.cpp
+++ lib/Analysis/GlobalsModRef.cpp
@@ -806,7 +806,8 @@
 /// other is some random pointer, we know there cannot be an alias, because the
 /// address of the global isn't taken.
 AliasResult GlobalsAAResult::alias(const MemoryLocation &LocA,
-                                   const MemoryLocation &LocB) {
+                                   const MemoryLocation &LocB,
+                                   AAQueryInfo &AAQI) {
   // Get the base object these pointers point to.
   const Value *UV1 = GetUnderlyingObject(LocA.Ptr, DL);
   const Value *UV2 = GetUnderlyingObject(LocB.Ptr, DL);
@@ -881,11 +882,12 @@
     if ((GV1 || GV2) && GV1 != GV2)
       return NoAlias;
 
-  return AAResultBase::alias(LocA, LocB);
+  return AAResultBase::alias(LocA, LocB, AAQI);
 }
 
 ModRefInfo GlobalsAAResult::getModRefInfoForArgument(const CallBase *Call,
-                                                     const GlobalValue *GV) {
+                                                     const GlobalValue *GV,
+                                                     AAQueryInfo &AAQI) {
   if (Call->doesNotAccessMemory())
     return ModRefInfo::NoModRef;
   ModRefInfo ConservativeResult =
@@ -901,7 +903,8 @@
     if (!all_of(Objects, isIdentifiedObject) &&
         // Try ::alias to see if all objects are known not to alias GV.
         !all_of(Objects, [&](Value *V) {
-          return this->alias(MemoryLocation(V), MemoryLocation(GV)) == NoAlias;
+          return this->alias(MemoryLocation(V), MemoryLocation(GV), AAQI) ==
+                 NoAlias;
         }))
       return ConservativeResult;
 
@@ -914,7 +917,8 @@
 }
 
 ModRefInfo GlobalsAAResult::getModRefInfo(const CallBase *Call,
-                                          const MemoryLocation &Loc) {
+                                          const MemoryLocation &Loc,
+                                          AAQueryInfo &AAQI) {
   ModRefInfo Known = ModRefInfo::ModRef;
 
   // If we are asking for mod/ref info of a direct call with a pointer to a
@@ -926,11 +930,11 @@
         if (NonAddressTakenGlobals.count(GV))
           if (const FunctionInfo *FI = getFunctionInfo(F))
             Known = unionModRef(FI->getModRefInfoForGlobal(*GV),
-                                getModRefInfoForArgument(Call, GV));
+                                getModRefInfoForArgument(Call, GV, AAQI));
 
   if (!isModOrRefSet(Known))
     return ModRefInfo::NoModRef; // No need to query other mod/ref analyses
-  return intersectModRef(Known, AAResultBase::getModRefInfo(Call, Loc));
+  return intersectModRef(Known, AAResultBase::getModRefInfo(Call, Loc, AAQI));
 }
 
 GlobalsAAResult::GlobalsAAResult(const DataLayout &DL,
Index: lib/Analysis/MemorySSA.cpp
===================================================================
--- lib/Analysis/MemorySSA.cpp
+++ lib/Analysis/MemorySSA.cpp
@@ -251,10 +251,10 @@
 
 // Return a pair of {IsClobber (bool), AR (AliasResult)}. It relies on AR being
 // ignored if IsClobber = false.
-static ClobberAlias instructionClobbersQuery(const MemoryDef *MD,
-                                             const MemoryLocation &UseLoc,
-                                             const Instruction *UseInst,
-                                             AliasAnalysis &AA) {
+template <typename AliasAnalysisType>
+static ClobberAlias
+instructionClobbersQuery(const MemoryDef *MD, const MemoryLocation &UseLoc,
+                         const Instruction *UseInst, AliasAnalysisType &AA) {
   Instruction *DefInst = MD->getMemoryInst();
   assert(DefInst && "Defining instruction not actually an instruction");
   const auto *UseCall = dyn_cast<CallBase>(UseInst);
@@ -299,10 +299,11 @@
   return {isModSet(I), AR};
 }
 
+template <typename AliasAnalysisType>
 static ClobberAlias instructionClobbersQuery(MemoryDef *MD,
                                              const MemoryUseOrDef *MU,
                                              const MemoryLocOrCall &UseMLOC,
-                                             AliasAnalysis &AA) {
+                                             AliasAnalysisType &AA) {
   // FIXME: This is a temporary hack to allow a single instructionClobbersQuery
   // to exist while MemoryLocOrCall is pushed through places.
   if (UseMLOC.IsCall)
@@ -345,12 +346,12 @@
 } // end anonymous namespace
 
 static bool lifetimeEndsAt(MemoryDef *MD, const MemoryLocation &Loc,
-                           AliasAnalysis &AA) {
+                           BatchAAResults &AA) {
   Instruction *Inst = MD->getMemoryInst();
   if (IntrinsicInst *II = dyn_cast<IntrinsicInst>(Inst)) {
     switch (II->getIntrinsicID()) {
     case Intrinsic::lifetime_end:
-      return AA.isMustAlias(MemoryLocation(II->getArgOperand(1)), Loc);
+      return AA.alias(MemoryLocation(II->getArgOperand(1)), Loc) == MustAlias;
     default:
       return false;
     }
@@ -358,13 +359,14 @@
   return false;
 }
 
-static bool isUseTriviallyOptimizableToLiveOnEntry(AliasAnalysis &AA,
+template <typename AliasAnalysisType>
+static bool isUseTriviallyOptimizableToLiveOnEntry(AliasAnalysisType &AA,
                                                    const Instruction *I) {
   // If the memory can't be changed, then loads of the memory can't be
   // clobbered.
   return isa<LoadInst>(I) && (I->getMetadata(LLVMContext::MD_invariant_load) ||
-                              AA.pointsToConstantMemory(cast<LoadInst>(I)->
-                                                          getPointerOperand()));
+                              AA.pointsToConstantMemory(MemoryLocation(
+                                  cast<LoadInst>(I)->getPointerOperand())));
 }
 
 /// Verifies that `Start` is clobbered by `ClobberAt`, and that nothing
@@ -380,10 +382,12 @@
 /// \param Query     The UpwardsMemoryQuery we used for our search.
 /// \param AA        The AliasAnalysis we used for our search.
 /// \param AllowImpreciseClobber Always false, unless we do relaxed verify.
+
+template <typename AliasAnalysisType>
 LLVM_ATTRIBUTE_UNUSED static void
 checkClobberSanity(const MemoryAccess *Start, MemoryAccess *ClobberAt,
                    const MemoryLocation &StartLoc, const MemorySSA &MSSA,
-                   const UpwardsMemoryQuery &Query, AliasAnalysis &AA,
+                   const UpwardsMemoryQuery &Query, AliasAnalysisType &AA,
                    bool AllowImpreciseClobber = false) {
   assert(MSSA.dominates(ClobberAt, Start) && "Clobber doesn't dominate start?");
 
@@ -473,7 +477,7 @@
 
 /// Our algorithm for walking (and trying to optimize) clobbers, all wrapped up
 /// in one class.
-class ClobberWalker {
+template <class AliasAnalysisType> class ClobberWalker {
   /// Save a few bytes by using unsigned instead of size_t.
   using ListIndex = unsigned;
 
@@ -497,7 +501,7 @@
   };
 
   const MemorySSA &MSSA;
-  AliasAnalysis &AA;
+  AliasAnalysisType &AA;
   DominatorTree &DT;
   UpwardsMemoryQuery *Query;
 
@@ -886,9 +890,10 @@
   }
 
 public:
-  ClobberWalker(const MemorySSA &MSSA, AliasAnalysis &AA, DominatorTree &DT)
+  ClobberWalker(const MemorySSA &MSSA, AliasAnalysisType &AA, DominatorTree &DT)
       : MSSA(MSSA), AA(AA), DT(DT) {}
 
+  AliasAnalysisType *getAA() { return &AA; }
   /// Finds the nearest clobber for the given query, optimizing phis if
   /// possible.
   MemoryAccess *findClobber(MemoryAccess *Start, UpwardsMemoryQuery &Q) {
@@ -944,12 +949,12 @@
 
 namespace llvm {
 
-class MemorySSA::ClobberWalkerBase {
-  ClobberWalker Walker;
+template <class AliasAnalysisType> class MemorySSA::ClobberWalkerBase {
+  ClobberWalker<AliasAnalysisType> Walker;
   MemorySSA *MSSA;
 
 public:
-  ClobberWalkerBase(MemorySSA *M, AliasAnalysis *A, DominatorTree *D)
+  ClobberWalkerBase(MemorySSA *M, AliasAnalysisType *A, DominatorTree *D)
       : Walker(*M, *A, *D), MSSA(M) {}
 
   MemoryAccess *getClobberingMemoryAccessBase(MemoryAccess *,
@@ -966,19 +971,24 @@
 /// A MemorySSAWalker that does AA walks to disambiguate accesses. It no
 /// longer does caching on its own, but the name has been retained for the
 /// moment.
+template <class AliasAnalysisType>
 class MemorySSA::CachingWalker final : public MemorySSAWalker {
-  ClobberWalkerBase *Walker;
+  ClobberWalkerBase<AliasAnalysisType> *Walker;
 
 public:
-  CachingWalker(MemorySSA *M, ClobberWalkerBase *W)
+  CachingWalker(MemorySSA *M, ClobberWalkerBase<AliasAnalysisType> *W)
       : MemorySSAWalker(M), Walker(W) {}
   ~CachingWalker() override = default;
 
   using MemorySSAWalker::getClobberingMemoryAccess;
 
-  MemoryAccess *getClobberingMemoryAccess(MemoryAccess *MA) override;
+  MemoryAccess *getClobberingMemoryAccess(MemoryAccess *MA) override {
+    return Walker->getClobberingMemoryAccessBase(MA, false);
+  }
   MemoryAccess *getClobberingMemoryAccess(MemoryAccess *MA,
-                                          const MemoryLocation &Loc) override;
+                                          const MemoryLocation &Loc) override {
+    return Walker->getClobberingMemoryAccessBase(MA, Loc);
+  }
 
   void invalidateInfo(MemoryAccess *MA) override {
     if (auto *MUD = dyn_cast<MemoryUseOrDef>(MA))
@@ -986,19 +996,24 @@
   }
 };
 
+template <class AliasAnalysisType>
 class MemorySSA::SkipSelfWalker final : public MemorySSAWalker {
-  ClobberWalkerBase *Walker;
+  ClobberWalkerBase<AliasAnalysisType> *Walker;
 
 public:
-  SkipSelfWalker(MemorySSA *M, ClobberWalkerBase *W)
+  SkipSelfWalker(MemorySSA *M, ClobberWalkerBase<AliasAnalysisType> *W)
       : MemorySSAWalker(M), Walker(W) {}
   ~SkipSelfWalker() override = default;
 
   using MemorySSAWalker::getClobberingMemoryAccess;
 
-  MemoryAccess *getClobberingMemoryAccess(MemoryAccess *MA) override;
+  MemoryAccess *getClobberingMemoryAccess(MemoryAccess *MA) override {
+    return Walker->getClobberingMemoryAccessBase(MA, true);
+  }
   MemoryAccess *getClobberingMemoryAccess(MemoryAccess *MA,
-                                          const MemoryLocation &Loc) override;
+                                          const MemoryLocation &Loc) override {
+    return Walker->getClobberingMemoryAccessBase(MA, Loc);
+  }
 
   void invalidateInfo(MemoryAccess *MA) override {
     if (auto *MUD = dyn_cast<MemoryUseOrDef>(MA))
@@ -1140,9 +1155,20 @@
 }
 
 MemorySSA::MemorySSA(Function &Func, AliasAnalysis *AA, DominatorTree *DT)
-    : AA(AA), DT(DT), F(Func), LiveOnEntryDef(nullptr), Walker(nullptr),
+    : AA(nullptr), DT(DT), F(Func), LiveOnEntryDef(nullptr), Walker(nullptr),
       SkipWalker(nullptr), NextID(0) {
-  buildMemorySSA();
+  // Build MemorySSA using a batch alias analysis. This reuses the internal
+  // state that AA collects during an alias()/getModRefInfo() call. This is
+  // safe because there are no CFG changes while building MemorySSA and can
+  // significantly reduce the time spent by the compiler in AA, because we will
+  // make queries about all the instructions in the Function.
+  BatchAAResults BatchAA(*AA);
+  buildMemorySSA(BatchAA);
+  // Intentionally leave AA to nullptr while building so we don't accidently
+  // use non-batch AliasAnalysis.
+  this->AA = AA;
+  // Also create the walker here.
+  getWalker();
 }
 
 MemorySSA::~MemorySSA() {
@@ -1179,9 +1205,9 @@
 /// which is walking bottom-up.
 class MemorySSA::OptimizeUses {
 public:
-  OptimizeUses(MemorySSA *MSSA, MemorySSAWalker *Walker, AliasAnalysis *AA,
+  OptimizeUses(MemorySSA *MSSA, MemorySSAWalker *Walker, BatchAAResults *BAA,
                DominatorTree *DT)
-      : MSSA(MSSA), Walker(Walker), AA(AA), DT(DT) {}
+      : MSSA(MSSA), Walker(Walker), AA(BAA), DT(DT) {}
 
   void optimizeUses();
 
@@ -1210,7 +1236,7 @@
 
   MemorySSA *MSSA;
   MemorySSAWalker *Walker;
-  AliasAnalysis *AA;
+  BatchAAResults *AA;
   DominatorTree *DT;
 };
 
@@ -1407,7 +1433,7 @@
     createMemoryPhi(BB);
 }
 
-void MemorySSA::buildMemorySSA() {
+void MemorySSA::buildMemorySSA(BatchAAResults &BAA) {
   // We create an access to represent "live on entry", for things like
   // arguments or users of globals, where the memory they use is defined before
   // the beginning of the function. We do not actually insert it into the IR.
@@ -1429,7 +1455,7 @@
     AccessList *Accesses = nullptr;
     DefsList *Defs = nullptr;
     for (Instruction &I : B) {
-      MemoryUseOrDef *MUD = createNewAccess(&I);
+      MemoryUseOrDef *MUD = createNewAccess(&I, &BAA);
       if (!MUD)
         continue;
 
@@ -1453,9 +1479,9 @@
   SmallPtrSet<BasicBlock *, 16> Visited;
   renamePass(DT->getRootNode(), LiveOnEntryDef.get(), Visited);
 
-  CachingWalker *Walker = getWalkerImpl();
-
-  OptimizeUses(this, Walker, AA, DT).optimizeUses();
+  ClobberWalkerBase<BatchAAResults> WalkerBase(this, &BAA, DT);
+  CachingWalker<BatchAAResults> WalkerLocal(this, &WalkerBase);
+  OptimizeUses(this, &WalkerLocal, &BAA, DT).optimizeUses();
 
   // Mark the uses in unreachable blocks as live on entry, so that they go
   // somewhere.
@@ -1466,14 +1492,16 @@
 
 MemorySSAWalker *MemorySSA::getWalker() { return getWalkerImpl(); }
 
-MemorySSA::CachingWalker *MemorySSA::getWalkerImpl() {
+MemorySSA::CachingWalker<AliasAnalysis> *MemorySSA::getWalkerImpl() {
   if (Walker)
     return Walker.get();
 
   if (!WalkerBase)
-    WalkerBase = llvm::make_unique<ClobberWalkerBase>(this, AA, DT);
+    WalkerBase =
+        llvm::make_unique<ClobberWalkerBase<AliasAnalysis>>(this, AA, DT);
 
-  Walker = llvm::make_unique<CachingWalker>(this, WalkerBase.get());
+  Walker =
+      llvm::make_unique<CachingWalker<AliasAnalysis>>(this, WalkerBase.get());
   return Walker.get();
 }
 
@@ -1482,9 +1510,11 @@
     return SkipWalker.get();
 
   if (!WalkerBase)
-    WalkerBase = llvm::make_unique<ClobberWalkerBase>(this, AA, DT);
+    WalkerBase =
+        llvm::make_unique<ClobberWalkerBase<AliasAnalysis>>(this, AA, DT);
 
-  SkipWalker = llvm::make_unique<SkipSelfWalker>(this, WalkerBase.get());
+  SkipWalker =
+      llvm::make_unique<SkipSelfWalker<AliasAnalysis>>(this, WalkerBase.get());
   return SkipWalker.get();
  }
 
@@ -1603,7 +1633,7 @@
                                                MemoryAccess *Definition,
                                                const MemoryUseOrDef *Template) {
   assert(!isa<PHINode>(I) && "Cannot create a defined access for a PHI");
-  MemoryUseOrDef *NewAccess = createNewAccess(I, Template);
+  MemoryUseOrDef *NewAccess = createNewAccess(I, AA, Template);
   assert(
       NewAccess != nullptr &&
       "Tried to create a memory access for a non-memory touching instruction");
@@ -1626,7 +1656,9 @@
 }
 
 /// Helper function to create new memory accesses
+template <typename AliasAnalysisType>
 MemoryUseOrDef *MemorySSA::createNewAccess(Instruction *I,
+                                           AliasAnalysisType *AAP,
                                            const MemoryUseOrDef *Template) {
   // The assume intrinsic has a control dependency which we model by claiming
   // that it writes arbitrarily. Ignore that fake memory dependency here.
@@ -1641,7 +1673,7 @@
     Def = dyn_cast_or_null<MemoryDef>(Template) != nullptr;
     Use = dyn_cast_or_null<MemoryUse>(Template) != nullptr;
 #if !defined(NDEBUG)
-    ModRefInfo ModRef = AA->getModRefInfo(I, None);
+    ModRefInfo ModRef = AAP->getModRefInfo(I, None);
     bool DefCheck, UseCheck;
     DefCheck = isModSet(ModRef) || isOrdered(I);
     UseCheck = isRefSet(ModRef);
@@ -1649,7 +1681,7 @@
 #endif
   } else {
     // Find out what affect this instruction has on memory.
-    ModRefInfo ModRef = AA->getModRefInfo(I, None);
+    ModRefInfo ModRef = AAP->getModRefInfo(I, None);
     // The isOrdered check is used to ensure that volatiles end up as defs
     // (atomics end up as ModRef right now anyway).  Until we separate the
     // ordering chain from the memory chain, this enables people to see at least
@@ -1702,7 +1734,7 @@
     MUD->setDefiningAccess(nullptr);
   // Invalidate our walker's cache if necessary
   if (!isa<MemoryUse>(MA))
-    Walker->invalidateInfo(MA);
+    getWalker()->invalidateInfo(MA);
 
   Value *MemoryInst;
   if (const auto *MUD = dyn_cast<MemoryUseOrDef>(MA))
@@ -2175,7 +2207,9 @@
 /// the MemoryAccess that actually clobbers Loc.
 ///
 /// \returns our clobbering memory access
-MemoryAccess *MemorySSA::ClobberWalkerBase::getClobberingMemoryAccessBase(
+template <typename AliasAnalysisType>
+MemoryAccess *
+MemorySSA::ClobberWalkerBase<AliasAnalysisType>::getClobberingMemoryAccessBase(
     MemoryAccess *StartingAccess, const MemoryLocation &Loc) {
   if (isa<MemoryPhi>(StartingAccess))
     return StartingAccess;
@@ -2212,9 +2246,10 @@
   return Clobber;
 }
 
+template <typename AliasAnalysisType>
 MemoryAccess *
-MemorySSA::ClobberWalkerBase::getClobberingMemoryAccessBase(MemoryAccess *MA,
-                                                            bool SkipSelf) {
+MemorySSA::ClobberWalkerBase<AliasAnalysisType>::getClobberingMemoryAccessBase(
+    MemoryAccess *MA, bool SkipSelf) {
   auto *StartingAccess = dyn_cast<MemoryUseOrDef>(MA);
   // If this is a MemoryPhi, we can't do anything.
   if (!StartingAccess)
@@ -2240,7 +2275,7 @@
 
   UpwardsMemoryQuery Q(I, StartingAccess);
 
-  if (isUseTriviallyOptimizableToLiveOnEntry(*MSSA->AA, I)) {
+  if (isUseTriviallyOptimizableToLiveOnEntry(*Walker.getAA(), I)) {
     MemoryAccess *LiveOnEntry = MSSA->getLiveOnEntryDef();
     StartingAccess->setOptimized(LiveOnEntry);
     StartingAccess->setOptimizedAccessType(None);
@@ -2289,28 +2324,6 @@
   return Result;
 }
 
-MemoryAccess *
-MemorySSA::CachingWalker::getClobberingMemoryAccess(MemoryAccess *MA) {
-  return Walker->getClobberingMemoryAccessBase(MA, false);
-}
-
-MemoryAccess *
-MemorySSA::CachingWalker::getClobberingMemoryAccess(MemoryAccess *MA,
-                                                    const MemoryLocation &Loc) {
-  return Walker->getClobberingMemoryAccessBase(MA, Loc);
-}
-
-MemoryAccess *
-MemorySSA::SkipSelfWalker::getClobberingMemoryAccess(MemoryAccess *MA) {
-  return Walker->getClobberingMemoryAccessBase(MA, true);
-}
-
-MemoryAccess *
-MemorySSA::SkipSelfWalker::getClobberingMemoryAccess(MemoryAccess *MA,
-                                                    const MemoryLocation &Loc) {
-  return Walker->getClobberingMemoryAccessBase(MA, Loc);
-}
-
 MemoryAccess *
 DoNothingMemorySSAWalker::getClobberingMemoryAccess(MemoryAccess *MA) {
   if (auto *Use = dyn_cast<MemoryUseOrDef>(MA))
Index: lib/Analysis/ObjCARCAliasAnalysis.cpp
===================================================================
--- lib/Analysis/ObjCARCAliasAnalysis.cpp
+++ lib/Analysis/ObjCARCAliasAnalysis.cpp
@@ -37,9 +37,10 @@
 using namespace llvm::objcarc;
 
 AliasResult ObjCARCAAResult::alias(const MemoryLocation &LocA,
-                                   const MemoryLocation &LocB) {
+                                   const MemoryLocation &LocB,
+                                   AAQueryInfo &AAQI) {
   if (!EnableARCOpts)
-    return AAResultBase::alias(LocA, LocB);
+    return AAResultBase::alias(LocA, LocB, AAQI);
 
   // First, strip off no-ops, including ObjC-specific no-ops, and try making a
   // precise alias query.
@@ -47,7 +48,7 @@
   const Value *SB = GetRCIdentityRoot(LocB.Ptr);
   AliasResult Result =
       AAResultBase::alias(MemoryLocation(SA, LocA.Size, LocA.AATags),
-                          MemoryLocation(SB, LocB.Size, LocB.AATags));
+                          MemoryLocation(SB, LocB.Size, LocB.AATags), AAQI);
   if (Result != MayAlias)
     return Result;
 
@@ -56,7 +57,7 @@
   const Value *UA = GetUnderlyingObjCPtr(SA, DL);
   const Value *UB = GetUnderlyingObjCPtr(SB, DL);
   if (UA != SA || UB != SB) {
-    Result = AAResultBase::alias(MemoryLocation(UA), MemoryLocation(UB));
+    Result = AAResultBase::alias(MemoryLocation(UA), MemoryLocation(UB), AAQI);
     // We can't use MustAlias or PartialAlias results here because
     // GetUnderlyingObjCPtr may return an offsetted pointer value.
     if (Result == NoAlias)
@@ -69,22 +70,23 @@
 }
 
 bool ObjCARCAAResult::pointsToConstantMemory(const MemoryLocation &Loc,
-                                             bool OrLocal) {
+                                             AAQueryInfo &AAQI, bool OrLocal) {
   if (!EnableARCOpts)
-    return AAResultBase::pointsToConstantMemory(Loc, OrLocal);
+    return AAResultBase::pointsToConstantMemory(Loc, AAQI, 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 (AAResultBase::pointsToConstantMemory(
-          MemoryLocation(S, Loc.Size, Loc.AATags), OrLocal))
+          MemoryLocation(S, Loc.Size, Loc.AATags), AAQI, 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);
   if (U != S)
-    return AAResultBase::pointsToConstantMemory(MemoryLocation(U), OrLocal);
+    return AAResultBase::pointsToConstantMemory(MemoryLocation(U), AAQI,
+                                                OrLocal);
 
   // If that failed, fail. We don't need to chain here, since that's covered
   // by the earlier precise query.
@@ -106,9 +108,10 @@
 }
 
 ModRefInfo ObjCARCAAResult::getModRefInfo(const CallBase *Call,
-                                          const MemoryLocation &Loc) {
+                                          const MemoryLocation &Loc,
+                                          AAQueryInfo &AAQI) {
   if (!EnableARCOpts)
-    return AAResultBase::getModRefInfo(Call, Loc);
+    return AAResultBase::getModRefInfo(Call, Loc, AAQI);
 
   switch (GetBasicARCInstKind(Call)) {
   case ARCInstKind::Retain:
@@ -127,7 +130,7 @@
     break;
   }
 
-  return AAResultBase::getModRefInfo(Call, Loc);
+  return AAResultBase::getModRefInfo(Call, Loc, AAQI);
 }
 
 ObjCARCAAResult ObjCARCAA::run(Function &F, FunctionAnalysisManager &AM) {
Index: lib/Analysis/ScalarEvolutionAliasAnalysis.cpp
===================================================================
--- lib/Analysis/ScalarEvolutionAliasAnalysis.cpp
+++ lib/Analysis/ScalarEvolutionAliasAnalysis.cpp
@@ -22,7 +22,7 @@
 using namespace llvm;
 
 AliasResult SCEVAAResult::alias(const MemoryLocation &LocA,
-                                const MemoryLocation &LocB) {
+                                const MemoryLocation &LocB, AAQueryInfo &AAQI) {
   // 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.
@@ -85,11 +85,12 @@
                              AO ? AAMDNodes() : LocA.AATags),
               MemoryLocation(BO ? BO : LocB.Ptr,
                              BO ? LocationSize::unknown() : LocB.Size,
-                             BO ? AAMDNodes() : LocB.AATags)) == NoAlias)
+                             BO ? AAMDNodes() : LocB.AATags),
+              AAQI) == NoAlias)
       return NoAlias;
 
   // Forward the query to the next analysis.
-  return AAResultBase::alias(LocA, LocB);
+  return AAResultBase::alias(LocA, LocB, AAQI);
 }
 
 /// Given an expression, try to find a base value.
Index: lib/Analysis/ScopedNoAliasAA.cpp
===================================================================
--- lib/Analysis/ScopedNoAliasAA.cpp
+++ lib/Analysis/ScopedNoAliasAA.cpp
@@ -75,9 +75,10 @@
 } // end anonymous namespace
 
 AliasResult ScopedNoAliasAAResult::alias(const MemoryLocation &LocA,
-                                         const MemoryLocation &LocB) {
+                                         const MemoryLocation &LocB,
+                                         AAQueryInfo &AAQI) {
   if (!EnableScopedNoAlias)
-    return AAResultBase::alias(LocA, LocB);
+    return AAResultBase::alias(LocA, LocB, AAQI);
 
   // Get the attached MDNodes.
   const MDNode *AScopes = LocA.AATags.Scope, *BScopes = LocB.AATags.Scope;
@@ -91,13 +92,14 @@
     return NoAlias;
 
   // If they may alias, chain to the next AliasAnalysis.
-  return AAResultBase::alias(LocA, LocB);
+  return AAResultBase::alias(LocA, LocB, AAQI);
 }
 
 ModRefInfo ScopedNoAliasAAResult::getModRefInfo(const CallBase *Call,
-                                                const MemoryLocation &Loc) {
+                                                const MemoryLocation &Loc,
+                                                AAQueryInfo &AAQI) {
   if (!EnableScopedNoAlias)
-    return AAResultBase::getModRefInfo(Call, Loc);
+    return AAResultBase::getModRefInfo(Call, Loc, AAQI);
 
   if (!mayAliasInScopes(Loc.AATags.Scope,
                         Call->getMetadata(LLVMContext::MD_noalias)))
@@ -107,13 +109,14 @@
                         Loc.AATags.NoAlias))
     return ModRefInfo::NoModRef;
 
-  return AAResultBase::getModRefInfo(Call, Loc);
+  return AAResultBase::getModRefInfo(Call, Loc, AAQI);
 }
 
 ModRefInfo ScopedNoAliasAAResult::getModRefInfo(const CallBase *Call1,
-                                                const CallBase *Call2) {
+                                                const CallBase *Call2,
+                                                AAQueryInfo &AAQI) {
   if (!EnableScopedNoAlias)
-    return AAResultBase::getModRefInfo(Call1, Call2);
+    return AAResultBase::getModRefInfo(Call1, Call2, AAQI);
 
   if (!mayAliasInScopes(Call1->getMetadata(LLVMContext::MD_alias_scope),
                         Call2->getMetadata(LLVMContext::MD_noalias)))
@@ -123,7 +126,7 @@
                         Call1->getMetadata(LLVMContext::MD_noalias)))
     return ModRefInfo::NoModRef;
 
-  return AAResultBase::getModRefInfo(Call1, Call2);
+  return AAResultBase::getModRefInfo(Call1, Call2, AAQI);
 }
 
 static void collectMDInDomain(const MDNode *List, const MDNode *Domain,
Index: lib/Analysis/TypeBasedAliasAnalysis.cpp
===================================================================
--- lib/Analysis/TypeBasedAliasAnalysis.cpp
+++ lib/Analysis/TypeBasedAliasAnalysis.cpp
@@ -367,26 +367,28 @@
 }
 
 AliasResult TypeBasedAAResult::alias(const MemoryLocation &LocA,
-                                     const MemoryLocation &LocB) {
+                                     const MemoryLocation &LocB,
+                                     AAQueryInfo &AAQI) {
   if (!EnableTBAA)
-    return AAResultBase::alias(LocA, LocB);
+    return AAResultBase::alias(LocA, LocB, AAQI);
 
   // If accesses may alias, chain to the next AliasAnalysis.
   if (Aliases(LocA.AATags.TBAA, LocB.AATags.TBAA))
-    return AAResultBase::alias(LocA, LocB);
+    return AAResultBase::alias(LocA, LocB, AAQI);
 
   // Otherwise return a definitive result.
   return NoAlias;
 }
 
 bool TypeBasedAAResult::pointsToConstantMemory(const MemoryLocation &Loc,
+                                               AAQueryInfo &AAQI,
                                                bool OrLocal) {
   if (!EnableTBAA)
-    return AAResultBase::pointsToConstantMemory(Loc, OrLocal);
+    return AAResultBase::pointsToConstantMemory(Loc, AAQI, OrLocal);
 
   const MDNode *M = Loc.AATags.TBAA;
   if (!M)
-    return AAResultBase::pointsToConstantMemory(Loc, OrLocal);
+    return AAResultBase::pointsToConstantMemory(Loc, AAQI, OrLocal);
 
   // If this is an "immutable" type, we can assume the pointer is pointing
   // to constant memory.
@@ -394,7 +396,7 @@
       (isStructPathTBAA(M) && TBAAStructTagNode(M).isTypeImmutable()))
     return true;
 
-  return AAResultBase::pointsToConstantMemory(Loc, OrLocal);
+  return AAResultBase::pointsToConstantMemory(Loc, AAQI, OrLocal);
 }
 
 FunctionModRefBehavior
@@ -420,29 +422,31 @@
 }
 
 ModRefInfo TypeBasedAAResult::getModRefInfo(const CallBase *Call,
-                                            const MemoryLocation &Loc) {
+                                            const MemoryLocation &Loc,
+                                            AAQueryInfo &AAQI) {
   if (!EnableTBAA)
-    return AAResultBase::getModRefInfo(Call, Loc);
+    return AAResultBase::getModRefInfo(Call, Loc, AAQI);
 
   if (const MDNode *L = Loc.AATags.TBAA)
     if (const MDNode *M = Call->getMetadata(LLVMContext::MD_tbaa))
       if (!Aliases(L, M))
         return ModRefInfo::NoModRef;
 
-  return AAResultBase::getModRefInfo(Call, Loc);
+  return AAResultBase::getModRefInfo(Call, Loc, AAQI);
 }
 
 ModRefInfo TypeBasedAAResult::getModRefInfo(const CallBase *Call1,
-                                            const CallBase *Call2) {
+                                            const CallBase *Call2,
+                                            AAQueryInfo &AAQI) {
   if (!EnableTBAA)
-    return AAResultBase::getModRefInfo(Call1, Call2);
+    return AAResultBase::getModRefInfo(Call1, Call2, AAQI);
 
   if (const MDNode *M1 = Call1->getMetadata(LLVMContext::MD_tbaa))
     if (const MDNode *M2 = Call2->getMetadata(LLVMContext::MD_tbaa))
       if (!Aliases(M1, M2))
         return ModRefInfo::NoModRef;
 
-  return AAResultBase::getModRefInfo(Call1, Call2);
+  return AAResultBase::getModRefInfo(Call1, Call2, AAQI);
 }
 
 bool MDNode::isTBAAVtableAccess() const {
Index: lib/Target/AMDGPU/AMDGPUAliasAnalysis.h
===================================================================
--- lib/Target/AMDGPU/AMDGPUAliasAnalysis.h
+++ lib/Target/AMDGPU/AMDGPUAliasAnalysis.h
@@ -44,8 +44,10 @@
   /// 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);
+  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB,
+                    AAQueryInfo &AAQI);
+  bool pointsToConstantMemory(const MemoryLocation &Loc, AAQueryInfo &AAQI,
+                              bool OrLocal);
 
 private:
   bool Aliases(const MDNode *A, const MDNode *B) const;
Index: lib/Target/AMDGPU/AMDGPUAliasAnalysis.cpp
===================================================================
--- lib/Target/AMDGPU/AMDGPUAliasAnalysis.cpp
+++ lib/Target/AMDGPU/AMDGPUAliasAnalysis.cpp
@@ -76,7 +76,8 @@
 }
 
 AliasResult AMDGPUAAResult::alias(const MemoryLocation &LocA,
-                                  const MemoryLocation &LocB) {
+                                  const MemoryLocation &LocB,
+                                  AAQueryInfo &AAQI) {
   unsigned asA = LocA.Ptr->getType()->getPointerAddressSpace();
   unsigned asB = LocB.Ptr->getType()->getPointerAddressSpace();
 
@@ -85,11 +86,11 @@
     return Result;
 
   // Forward the query to the next alias analysis.
-  return AAResultBase::alias(LocA, LocB);
+  return AAResultBase::alias(LocA, LocB, AAQI);
 }
 
 bool AMDGPUAAResult::pointsToConstantMemory(const MemoryLocation &Loc,
-                                            bool OrLocal) {
+                                            AAQueryInfo &AAQI, bool OrLocal) {
   const Value *Base = GetUnderlyingObject(Loc.Ptr, DL);
   unsigned AS = Base->getType()->getPointerAddressSpace();
   if (AS == AMDGPUAS::CONSTANT_ADDRESS ||
@@ -106,7 +107,7 @@
     // Only assume constant memory for arguments on kernels.
     switch (F->getCallingConv()) {
     default:
-      return AAResultBase::pointsToConstantMemory(Loc, OrLocal);
+      return AAResultBase::pointsToConstantMemory(Loc, AAQI, OrLocal);
     case CallingConv::AMDGPU_LS:
     case CallingConv::AMDGPU_HS:
     case CallingConv::AMDGPU_ES:
@@ -133,5 +134,5 @@
       return true;
     }
   }
-  return AAResultBase::pointsToConstantMemory(Loc, OrLocal);
+  return AAResultBase::pointsToConstantMemory(Loc, AAQI, OrLocal);
 }
Index: unittests/Analysis/AliasAnalysisTest.cpp
===================================================================
--- unittests/Analysis/AliasAnalysisTest.cpp
+++ unittests/Analysis/AliasAnalysisTest.cpp
@@ -85,7 +85,8 @@
 
   bool invalidate(Function &, const PreservedAnalyses &) { return false; }
 
-  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB) {
+  AliasResult alias(const MemoryLocation &LocA, const MemoryLocation &LocB,
+                    AAQueryInfo &AAQI) {
     CB();
     return MayAlias;
   }
Index: unittests/Analysis/BasicAliasAnalysisTest.cpp
===================================================================
--- unittests/Analysis/BasicAliasAnalysisTest.cpp
+++ unittests/Analysis/BasicAliasAnalysisTest.cpp
@@ -44,17 +44,19 @@
     DominatorTree DT;
     AssumptionCache AC;
     BasicAAResult BAA;
+    AAQueryInfo AAQI;
 
     TestAnalyses(BasicAATest &Test)
-        : DT(*Test.F), AC(*Test.F), BAA(Test.DL, *Test.F, Test.TLI, AC, &DT) {}
+        : DT(*Test.F), AC(*Test.F), BAA(Test.DL, *Test.F, Test.TLI, AC, &DT),
+          AAQI() {}
   };
 
   llvm::Optional<TestAnalyses> Analyses;
 
-  BasicAAResult &setupAnalyses() {
+  TestAnalyses &setupAnalyses() {
     assert(F);
     Analyses.emplace(*this);
-    return Analyses->BAA;
+    return Analyses.getValue();
   }
 
 public:
@@ -83,15 +85,17 @@
   GlobalPtr->setLinkage(GlobalValue::LinkageTypes::InternalLinkage);
   GlobalPtr->setInitializer(B.getInt8(0));
 
-  BasicAAResult &BasicAA = setupAnalyses();
+  auto &AllAnalyses = setupAnalyses();
+  BasicAAResult &BasicAA = AllAnalyses.BAA;
+  AAQueryInfo &AAQI = AllAnalyses.AAQI;
   ASSERT_EQ(
       BasicAA.alias(MemoryLocation(IncomingI32Ptr, LocationSize::precise(4)),
-                    MemoryLocation(GlobalPtr, LocationSize::precise(1))),
+                    MemoryLocation(GlobalPtr, LocationSize::precise(1)), AAQI),
       AliasResult::NoAlias);
 
   ASSERT_EQ(
       BasicAA.alias(MemoryLocation(IncomingI32Ptr, LocationSize::upperBound(4)),
-                    MemoryLocation(GlobalPtr, LocationSize::precise(1))),
+                    MemoryLocation(GlobalPtr, LocationSize::precise(1)), AAQI),
       AliasResult::MayAlias);
 }
 
@@ -110,14 +114,18 @@
   auto *I8AtUncertainOffset =
       cast<GetElementPtrInst>(B.CreateGEP(B.getInt8Ty(), I8, ArbitraryI32));
 
-  BasicAAResult &BasicAA = setupAnalyses();
+  auto &AllAnalyses = setupAnalyses();
+  BasicAAResult &BasicAA = AllAnalyses.BAA;
+  AAQueryInfo &AAQI = AllAnalyses.AAQI;
   ASSERT_EQ(BasicAA.alias(
                 MemoryLocation(I8, LocationSize::precise(2)),
-                MemoryLocation(I8AtUncertainOffset, LocationSize::precise(1))),
+                MemoryLocation(I8AtUncertainOffset, LocationSize::precise(1)),
+                AAQI),
             AliasResult::PartialAlias);
 
   ASSERT_EQ(BasicAA.alias(
                 MemoryLocation(I8, LocationSize::upperBound(2)),
-                MemoryLocation(I8AtUncertainOffset, LocationSize::precise(1))),
+                MemoryLocation(I8AtUncertainOffset, LocationSize::precise(1)),
+                AAQI),
             AliasResult::MayAlias);
 }