[GISel]: Change Legalization from top down to bottom up + DCE

[aditya_nandakumar]

Summary

This patch changes the legalization order from top down to bottom up.
Also, this deletes trivially dead instructions while legalizing.
Additionally, the LegalizationCombiner tries to clean up artifacts before legalizeInstrStep. This lets the combiner clean up redundant extends/truncs before letting the target deal with them. This simplifies the legalization loop a little - where we don't need to have a separate list to track new legalization artifacts for combines - as we can try to clean up every artifact (vs just new ones).

I have updated AArch backend with this patch.

[aditya_nandakumar]

Updated X86,AMDGPU and part of as well.
Two large tests remain to be fixed -

LLVM :: CodeGen/ARM/GlobalISel/arm-legalize-fp.mir
LLVM :: CodeGen/ARM/GlobalISel/arm-legalizer.mir

[aemerson]

Hi Aditya,

As we discussed privately, looking forward with our plans to separate out the combiner mechanics, we should be extra careful here about our legalisation/combiner iteration scheme. From a design point of view, I'd like to see stricter separation between legalisation and combiner phases.[1] What do you think about changing the overall algorithm to instead run (legalize(), combine()) until we reach a fixed point? It would also be nice if we can share the same iteration scheme between legalizer's combiner and the separate combiner pass. That is, since you already compute the post-ordering of the blocks, we can just reverse them to have our ordering for the combine phase, and that would match the intended ordering for the combiner pass.

[1] To fill in everyone about our discussions: we plan to split the combiner mechanics into a separate pass/component, with the intention that the core routines can be shared between multiple clients. However, as a result of the GISel legaliser, we still have "artefacts" generated which, without optimisation before re-legalisation, could cause poor codegen. Therefore we need the ability for the legaliser to invoke some subset of the future GI-combiner/optimizer to clean these up.

Side note: it'll be easier to review codegen changes if we use the update test script in a separate commit first.

Cheers,
Amara

include/llvm/CodeGen/GlobalISel/LegalizerCombiner.h

202

I'm not sure about this approach to integrating combiners with the legalizer. Since we process the blocks and instructions bottom up with this change, having the combiner rather un-intuitively look at instructions top-down, and only in some cases, makes this harder to reason about.

Another thing is if we're going to separate out the combiner routines then we shouldn't have inconsistency between matching behaviour between different combiners.

[aemerson]

Hi Aditya,

I now think this approach is ok to continue with, given the constraints of the MIR type system about needing artifact clean ups as a necessity. I'd also eventually like to see these renamed into something else to make it clear they're distinct from "optimization" combines.

We'll also likely need to have an API to allow later passes to invoke legalization, such as the later GI combiner(s), unless we restrict them to always create legal operations. To do that I think we'll need to refactor the code from this patch into another helper (or the existing LegalizerHelper).

Cheers,
Amara

[aditya_nandakumar]

Legalization Artifacts are all those insts that are there to make the type system happy. Currently, the target needs to say all combinations of extends and truncs are legal and there's no way of verifying that post legalization, we only have *truly* legal instructions. This patch changes roughly the legalization algorithm to process all illegal insts at one go, and then process all truncs/extends that were added to satisfy the type constraints separately trying to combine trivial cases until they converge. This has the added benefit that, the target legalizerinfo can only say which truncs and extends are okay and the artifact combiner would combine away other exts and truncs.

Updated legalization algorithm to roughly the following pseudo code.

WorkList Insts, Artifacts;
collect_all_insts_and_artifacts(Insts, Artifacts);

do {

for (Inst in Insts)
     legalizeInstrStep(Inst, Insts, Artifacts);
for (Artifact in Artifacts)
     tryCombineArtifact(Artifact, Insts, Artifacts);

} while(!Insts.empty());

Also, wrote a simple wrapper equivalent to SetVector, except for erasing, it avoids moving all elements over by one and instead just nulls them out.

[vsk]

include/llvm/CodeGen/GlobalISel/GISelWorkList.h

32 ↗

(On Diff #121819)

Do you mean to delete the copy methods as well?

41 ↗

(On Diff #121819)

Use WorklistMap.try_emplace?

46 ↗

(On Diff #121819)

Use '///' for Doxygen support?

[aditya_nandakumar]

include/llvm/CodeGen/GlobalISel/GISelWorkList.h

32 ↗

(On Diff #121819)

I don't really see the need to explicitly specify any special constructor here as I'm not doing anything special. I'm currently inclining towards only specifying the default constructor as that's the only use case for now.

41 ↗

(On Diff #121819)

Updated.

46 ↗

(On Diff #121819)

Updated.

[aditya_nandakumar]

Updated for a few comments by Vedant.

[aemerson]

Hi Aditya,

This looks like a nice re-work. I have some minor comments. Since there's quite a bit of test churn, it's not clear to me what the test case (if any) applies to the new tryFoldImplicitDef() code.

Cheers,
Amara

include/llvm/CodeGen/GlobalISel/GISelWorkList.h

22 ↗

(On Diff #121829)

I thought the same with my original patch. I think this is fine to live here for now though especially if logging needs to be different.

include/llvm/CodeGen/GlobalISel/LegalizerCombiner.h

111

Can you add some comments explaining why this is needed/what it's trying to achieve.

238

A bit more concise if you test the inverse:

if (!SrcTy.isValid() || SrcTy != DstTy)
  break;
DefMI = MRI.getVRegDef(SrcReg)

lib/CodeGen/GlobalISel/Legalizer.cpp

103

Do we still need this? If we only ever legalise these and the artefacts are always generic opcodes then can we move this check into the worklist population loop and leave an assert here?

104

I think it would be helpful to add a clarifying comment here about why we're doing bottom up traversal, and also that we're now using RPO because of the way we use the worklist below. I.e. populating the worklist top down and popping from back.

159

Is there a specific test case?

[aditya_nandakumar]

Thanks Amara for your comments. The test for the folding of implicit_def is in X86/legalize_undef.

lib/CodeGen/GlobalISel/Legalizer.cpp

103

It's theoretically possible for the targets to have a pass before the legalizer where they emit target instructions. I'm not sure if not adding it to the list (during population) is better than ignoring them here.

159

I think we would hit it in a few places where we can have a trunc from two valid types (ie s32 and s16 in x86 for example).

[aditya_nandakumar]

Updated based on Amara's comments.

[aditya_nandakumar]

@rovka , would it be possible for you to look at the two failing arm tests ?

[rovka]

Sure, will do.

[aemerson]

lib/CodeGen/GlobalISel/Legalizer.cpp

103

You save a map lookup on each insertion for no real downside as the check is done at some point anyway, so I think it's worth it.

[aditya_nandakumar]

Thanks Amara - makes sense.

Updated.

[aditya_nandakumar]

Missed adding one assert.

[rovka]

Hi, I've updated the ARM tests, and you'll need to also commit this together with your patch: https://reviews.llvm.org/differential/diff/122657/

[aditya_nandakumar]

Rebase + Update based on Diana's patch.

[volkan]

Hi Aditya,

LGTM, nitpicks below.

Thank you,
Volkan

include/llvm/CodeGen/GlobalISel/LegalizerCombiner.h

114

This can be simplified as below.

unsigned Opcode = MI.getOpcode();
if(Opcode != TargetOpcode::G_ANYEXT && ...)
  return false;

lib/CodeGen/GlobalISel/Legalizer.cpp

170

Maybe we can rename LegalizerCombiner as ArtifactCombiner?

[aditya_nandakumar]

Committed in rL318210

include/llvm/CodeGen/GlobalISel/LegalizerCombiner.h

if (DefMI->getOpcode() == TargetOpcode::G_TRUNC) {
                                        SrcCopyExtOrTrunc, SizeDiffMIB);
       Builder.buildInstr(TargetOpcode::G_ASHR, DstReg, ShlMIB, SizeDiffMIB);
       markInstAndDefDead(MI, *DefMI, DeadInsts);
       return true;
     }
     return false;
   }
 
   bool tryCombineMerges(MachineInstr &MI,
                         SmallVectorImpl<MachineInstr *> &DeadInsts) {
 
     if (MI.getOpcode() != TargetOpcode::G_UNMERGE_VALUES)
       return false;
 
     unsigned NumDefs = MI.getNumOperands() - 1;
     unsigned SrcReg = MI.getOperand(NumDefs).getReg();
     MachineInstr *MergeI = MRI.getVRegDef(SrcReg);
     if (!MergeI || (MergeI->getOpcode() != TargetOpcode::G_MERGE_VALUES))
       return false;
 
bool tryCombineInstruction(MachineInstr &MI,
     case TargetOpcode::G_ANYEXT:
       return tryCombineAnyExt(MI, DeadInsts);
     case TargetOpcode::G_ZEXT:
       return tryCombineZExt(MI, DeadInsts);
     case TargetOpcode::G_SEXT:
       return tryCombineSExt(MI, DeadInsts);
     case TargetOpcode::G_UNMERGE_VALUES:
       return tryCombineMerges(MI, DeadInsts);
+    case TargetOpcode::G_TRUNC: {
+      bool Changed = false;
+      for (auto &Use : MRI.use_instructions(MI.getOperand(0).getReg()))
+        Changed |= tryCombineInstruction(Use, DeadInsts);
+      return Changed;
+    }
     }
   }
 
 private:
   /// Mark MI as dead. If a def of one of MI's operands, DefMI, would also be
   /// dead due to MI being killed, then mark DefMI as dead too.
   void markInstAndDefDead(MachineInstr &MI, MachineInstr &DefMI,
                           SmallVectorImpl<MachineInstr *> &DeadInsts) {
     DeadInsts.push_back(&MI);
     if (MRI.hasOneUse(DefMI.getOperand(0).getReg()))
       DeadInsts.push_back(&DefMI);
   }
   /// Checks if the target legalizer info has specified anything about the
   /// instruction, or if unsupported.
   bool isInstUnsupported(unsigned Opcode, const LLT &DstTy) const {
     auto Action = LI.getAction({Opcode, 0, DstTy});
     return Action.first == LegalizerInfo::LegalizeAction::Unsupported ||
            Action.first == LegalizerInfo::LegalizeAction::NotFound;
   }
 };
 
 } // namespace llvm

lib/CodeGen/GlobalISel/Legalizer.cpp

 //===-- llvm/CodeGen/GlobalISel/Legalizer.cpp -----------------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 /// \file This file implements the LegalizerHelper class to legalize individual
 /// instructions and the LegalizePass wrapper pass for the primary
 /// legalization.
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/CodeGen/GlobalISel/Legalizer.h"
+#include "llvm/ADT/PostOrderIterator.h"
 #include "llvm/ADT/SetVector.h"
 #include "llvm/CodeGen/GlobalISel/LegalizerCombiner.h"
 #include "llvm/CodeGen/GlobalISel/LegalizerHelper.h"
 #include "llvm/CodeGen/GlobalISel/Utils.h"
 #include "llvm/CodeGen/MachineOptimizationRemarkEmitter.h"
 #include "llvm/CodeGen/MachineRegisterInfo.h"
 #include "llvm/CodeGen/TargetPassConfig.h"
 #include "llvm/Support/Debug.h"
if (MF.getProperties().hasProperty(
           MachineFunctionProperties::Property::FailedISel))
     return false;
   DEBUG(dbgs() << "Legalize Machine IR for: " << MF.getName() << '\n');
   init(MF);
   const TargetPassConfig &TPC = getAnalysis<TargetPassConfig>();
   MachineOptimizationRemarkEmitter MORE(MF, /*MBFI=*/nullptr);
   LegalizerHelper Helper(MF);
 
+  // FIXME: We could introduce new blocks and will need to fix the outer loop.
+  // Until then, keep track of the number of blocks to assert that we don't.
+  const size_t NumBlocks = MF.size();
+  MachineRegisterInfo &MRI = MF.getRegInfo();
+
   // FIXME: an instruction may need more than one pass before it is legal. For
   // example on most architectures <3 x i3> is doubly-illegal. It would
   // typically proceed along a path like: <3 x i3> -> <3 x i8> -> <8 x i8>. We
   // probably want a worklist of instructions rather than naive iterate until
   // convergence for performance reasons.
   bool Changed = false;
-  MachineBasicBlock::iterator NextMI;
   using VecType = SmallSetVector<MachineInstr *, 8>;
   VecType WorkList;
-  VecType CombineList;
-  for (auto &MBB : MF) {
-    for (auto MI = MBB.begin(); MI != MBB.end(); MI = NextMI) {
-      // Get the next Instruction before we try to legalize, because there's a
-      // good chance MI will be deleted.
-      NextMI = std::next(MI);
+  for (auto *MBB : post_order(&MF)) {
+    if (MBB->empty())
+      continue;
+    bool ReachedBegin = false;
+    for (auto MII = std::prev(MBB->end()), Begin = MBB->begin();
+         !ReachedBegin;) {
+
+      MachineInstr &MI = *MII;
+
+      // And have our iterator point to the prev instruction, if there is one.
+      if (MII == Begin)
+        ReachedBegin = true;
+      else
+        --MII;
+
+      if (isTriviallyDead(MI, MRI)) {
+        DEBUG(dbgs() << MI << "Is dead; erasing.\n");
+        MI.eraseFromParentAndMarkDBGValuesForRemoval();
+        continue;
+      }
 
       // Only legalize pre-isel generic instructions: others don't have types
       // and are assumed to be legal.
-      if (!isPreISelGenericOpcode(MI->getOpcode()))
+      if (!isPreISelGenericOpcode(MI.getOpcode()))
         continue;
       unsigned NumNewInsns = 0;
       WorkList.clear();
-      CombineList.clear();
       Helper.MIRBuilder.recordInsertions([&](MachineInstr *MI) {
         // Only legalize pre-isel generic instructions.
         // Legalization process could generate Target specific pseudo
         // instructions with generic types. Don't record them
         if (isPreISelGenericOpcode(MI->getOpcode())) {
           ++NumNewInsns;
           WorkList.insert(MI);
-          CombineList.insert(MI);
         }
+        DEBUG(dbgs() << ".. .. New MI: " << *MI;);
       });
-      WorkList.insert(&*MI);
+      WorkList.insert(&MI);
       LegalizerCombiner C(Helper.MIRBuilder, MF.getRegInfo(),
                           Helper.getLegalizerInfo());
       bool Changed = false;
       LegalizerHelper::LegalizeResult Res;
-      do {
-        assert(!WorkList.empty() && "Expecting illegal ops");
-        while (!WorkList.empty()) {
-          NumNewInsns = 0;
-          MachineInstr *CurrInst = WorkList.pop_back_val();
-          Res = Helper.legalizeInstrStep(*CurrInst);
-          // Error out if we couldn't legalize this instruction. We may want to
-          // fall back to DAG ISel instead in the future.
-          if (Res == LegalizerHelper::UnableToLegalize) {
-            Helper.MIRBuilder.stopRecordingInsertions();
-            if (Res == LegalizerHelper::UnableToLegalize) {
-              reportGISelFailure(MF, TPC, MORE, "gisel-legalize",
-                                 "unable to legalize instruction", *CurrInst);
-              return false;
-            }
-          }
-          Changed |= Res == LegalizerHelper::Legalized;
-          // If CurrInst was legalized, there's a good chance that it might have
-          // been erased. So remove it from the Combine List.
-          if (Res == LegalizerHelper::Legalized)
-            CombineList.remove(CurrInst);
-
-#ifndef NDEBUG
-          if (NumNewInsns)
-            for (unsigned I = WorkList.size() - NumNewInsns,
-                          E = WorkList.size();
-                 I != E; ++I)
-              DEBUG(dbgs() << ".. .. New MI: " << *WorkList[I];);
-#endif
-        }
-        // Do the combines.
-        while (!CombineList.empty()) {
-          NumNewInsns = 0;
-          MachineInstr *CurrInst = CombineList.pop_back_val();
-          SmallVector<MachineInstr *, 4> DeadInstructions;
-          Changed |= C.tryCombineInstruction(*CurrInst, DeadInstructions);
-          for (auto *DeadMI : DeadInstructions) {
-            DEBUG(dbgs() << ".. Erasing Dead Instruction " << *DeadMI);
-            CombineList.remove(DeadMI);
-            WorkList.remove(DeadMI);
-            DeadMI->eraseFromParent();
-          }
-#ifndef NDEBUG
-          if (NumNewInsns)
-            for (unsigned I = CombineList.size() - NumNewInsns,
-                          E = CombineList.size();
-                 I != E; ++I)
-              DEBUG(dbgs() << ".. .. Combine New MI: " << *CombineList[I];);
-#endif
-        }
-      } while (!WorkList.empty());
+        SmallVector<MachineInstr *, 4> DeadInstructions;
+        if (C.tryCombineInstruction(*CurrInst, DeadInstructions)) {
+          for (auto *DeadMI : DeadInstructions) {
+            DEBUG(dbgs() << ".. Erasing Dead Instruction " << *DeadMI);
+            WorkList.remove(DeadMI);
+            // Actually mark the instruction for deletion.
+            MachineInstr *PrevMI = &*MII;
+            if (PrevMI == DeadMI)
+              --MII;
+            DeadMI->eraseFromParent();
+          }
+          Changed = true;
+          continue;
+        }
+
 
       Helper.MIRBuilder.stopRecordingInsertions();
     }
   }
 
-  MachineRegisterInfo &MRI = MF.getRegInfo();
   MachineIRBuilder MIRBuilder(MF);
   LegalizerCombiner C(MIRBuilder, MRI, Helper.getLegalizerInfo());
+  MachineBasicBlock::iterator NextMI;
   for (auto &MBB : MF) {
     for (auto MI = MBB.begin(); MI != MBB.end(); MI = NextMI) {
       // Get the next Instruction before we try to legalize, because there's a
       // good chance MI will be deleted.
       // TOOD: Perhaps move this to a combiner pass later?.
       NextMI = std::next(MI);
       SmallVector<MachineInstr *, 4> DeadInsts;
       Changed |= C.tryCombineMerges(*MI, DeadInsts);
       for (auto *DeadMI : DeadInsts)
         DeadMI->eraseFromParent();
     }
   }
+  // For now don't support if new blocks are inserted - we would need to fix the
+  // outerloop for that.
+  if (MF.size() != NumBlocks) {
+    MachineOptimizationRemarkMissed R("gisel-legalize", "GISelFailure",
+                                      MF.getFunction()->getSubprogram(),
+                                      /*MBB=*/nullptr);
+    R << "inserting blocks is not supported yet";
+    reportGISelFailure(MF, TPC, MORE, R);
+    return false;
+  }
 
   return Changed;
 }

test/CodeGen/AArch64/GlobalISel/arm64-fallback.ll

true:
   br label %end
 
 false:
   br label %end
 
 }
 
   ; General legalizer inability to handle types whose size wasn't a power of 2.
-; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to legalize instruction: %vreg1<def>(s42) = G_LOAD %vreg0; mem:LD6[%addr](align=8) (in function: odd_type)
+; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to legalize instruction: G_STORE %vreg1, %vreg0; mem:ST6[%addr](align=8) (in function: odd_type)
 ; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for odd_type
 ; FALLBACK-WITH-REPORT-OUT-LABEL: odd_type:
 define void @odd_type(i42* %addr) {
   %val42 = load i42, i42* %addr
+  store i42 %val42, i42* %addr
   ret void
 }
 
-; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to legalize instruction: %vreg1<def>(<7 x s32>) = G_LOAD %vreg0; mem:LD28[%addr](align=32) (in function: odd_vector)
+; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to legalize instruction: G_STORE %vreg1, %vreg0; mem:ST28[%addr](align=32) (in function: odd_vector)
 ; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for odd_vector
 ; FALLBACK-WITH-REPORT-OUT-LABEL: odd_vector:
 define void @odd_vector(<7 x i32>* %addr) {
   %vec = load <7 x i32>, <7 x i32>* %addr
+  store <7 x i32> %vec, <7 x i32>* %addr
   ret void
 }
 
   ; AArch64 was asserting instead of returning an invalid mapping for unknown
   ; sizes.
 ; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to translate instruction: ret: '  ret i128 undef' (in function: sequence_sizes)
 ; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for sequence_sizes
 ; FALLBACK-WITH-REPORT-LABEL: sequence_sizes:

 ; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for vector_of_pointers_extractelement
 ; FALLBACK-WITH-REPORT-OUT-LABEL: vector_of_pointers_extractelement:
 @var = global <2 x i16*> zeroinitializer
 define void @vector_of_pointers_extractelement() {
   br label %end
 
 block:
   %dummy = extractelement <2 x i16*> %vec, i32 0
+  store i16* %dummy, i16** undef
   ret void
 
 end:
   %vec = load <2 x i16*>, <2 x i16*>* undef
   br label %block
 }
 
-; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to legalize instruction: %vreg0<def>(<2 x p0>) = G_INSERT_VECTOR_ELT %vreg1, %vreg2, %vreg3; (in function: vector_of_pointers_insertelement
+; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to legalize instruction: G_STORE %vreg0, %vreg4; mem:ST16[undef] (in function: vector_of_pointers_insertelement)
 ; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for vector_of_pointers_insertelement
 ; FALLBACK-WITH-REPORT-OUT-LABEL: vector_of_pointers_insertelement:
 define void @vector_of_pointers_insertelement() {
   br label %end
 
 block:
   %dummy = insertelement <2 x i16*> %vec, i16* null, i32 0
+  store <2 x i16*> %dummy, <2 x i16*>* undef
   ret void
 
 end:
   %vec = load <2 x i16*>, <2 x i16*>* undef
   br label %block
 }

test/CodeGen/AArch64/GlobalISel/legalize-add.mir

-# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
 # RUN: llc -O0 -run-pass=legalizer -global-isel %s -o - | FileCheck %s
 
 --- |
   target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
   target triple = "aarch64--"
   define void @test_scalar_add_big() {
   entry:
     ret void
   }
   define void @test_scalar_add_small() {
   entry:
     ret void
   }
   define void @test_vector_add() {
   entry:
     ret void
   }
 ...
 
 ---
 name:            test_scalar_add_big
-registers:
-  - { id: 0, class: _ }
-  - { id: 1, class: _ }
-  - { id: 2, class: _ }
-  - { id: 3, class: _ }
-  - { id: 4, class: _ }
-  - { id: 5, class: _ }
-  - { id: 6, class: _ }
-  - { id: 7, class: _ }
-  - { id: 8, class: _ }
 body: |
   bb.0.entry:
     liveins: %x0, %x1, %x2, %x3
 
     ; CHECK-LABEL: name: test_scalar_add_big
     ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
     ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY %x1
     ; CHECK: [[COPY2:%[0-9]+]]:_(s64) = COPY %x2
     ; CHECK: [[COPY3:%[0-9]+]]:_(s64) = COPY %x3
     ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
     ; CHECK: [[TRUNC:%[0-9]+]]:_(s1) = G_TRUNC [[C]](s32)
     ; CHECK: [[UADDE:%[0-9]+]]:_(s64), [[UADDE1:%[0-9]+]]:_(s1) = G_UADDE [[COPY]], [[COPY2]], [[TRUNC]]
     ; CHECK: [[UADDE2:%[0-9]+]]:_(s64), [[UADDE3:%[0-9]+]]:_(s1) = G_UADDE [[COPY1]], [[COPY3]], [[UADDE1]]
     ; CHECK: %x0 = COPY [[UADDE]](s64)
     ; CHECK: %x1 = COPY [[UADDE2]](s64)
-    %0(s64) = COPY %x0
-    %1(s64) = COPY %x1
-    %2(s64) = COPY %x2
-    %3(s64) = COPY %x3
-    %4(s128) = G_MERGE_VALUES %0, %1
-    %5(s128) = G_MERGE_VALUES %2, %3
-    %6(s128) = G_ADD %4, %5
-    %7(s64), %8(s64) = G_UNMERGE_VALUES %6
+    %0:_(s64) = COPY %x0
+    %1:_(s64) = COPY %x1
+    %2:_(s64) = COPY %x2
+    %3:_(s64) = COPY %x3
+    %4:_(s128) = G_MERGE_VALUES %0, %1
+    %5:_(s128) = G_MERGE_VALUES %2, %3
+    %6:_(s128) = G_ADD %4, %5
+    %7:_(s64), %8:_(s64) = G_UNMERGE_VALUES %6
     %x0 = COPY %7
     %x1 = COPY %8
 ...
 
 ---
 name:            test_scalar_add_small
-registers:
-  - { id: 0, class: _ }
-  - { id: 1, class: _ }
-  - { id: 2, class: _ }
-  - { id: 3, class: _ }
-  - { id: 4, class: _ }
-  - { id: 5, class: _ }
 body: |
   bb.0.entry:
     liveins: %x0, %x1, %x2, %x3
 
     ; CHECK-LABEL: name: test_scalar_add_small
     ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
     ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY %x1
     ; CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
     ; CHECK: [[TRUNC1:%[0-9]+]]:_(s32) = G_TRUNC [[COPY1]](s64)
     ; CHECK: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[TRUNC]], [[TRUNC1]]
-    ; CHECK: [[TRUNC2:%[0-9]+]]:_(s8) = G_TRUNC [[ADD]](s32)
-    ; CHECK: [[ANYEXT:%[0-9]+]]:_(s64) = G_ANYEXT [[TRUNC2]](s8)
+    ; CHECK: [[ANYEXT:%[0-9]+]]:_(s64) = G_ANYEXT [[ADD]](s32)
     ; CHECK: %x0 = COPY [[ANYEXT]](s64)
-    %0(s64) = COPY %x0
-    %1(s64) = COPY %x1
-    %2(s8) = G_TRUNC %0
-    %3(s8) = G_TRUNC %1
-    %4(s8) = G_ADD %2, %3
-    %5(s64) = G_ANYEXT %4
+    %0:_(s64) = COPY %x0
+    %1:_(s64) = COPY %x1
+    %2:_(s8) = G_TRUNC %0
+    %3:_(s8) = G_TRUNC %1
+    %4:_(s8) = G_ADD %2, %3
+    %5:_(s64) = G_ANYEXT %4
     %x0 = COPY %5
 ...
 
 ---
 name:            test_vector_add
-registers:
-  - { id: 0, class: _ }
-  - { id: 1, class: _ }
-  - { id: 2, class: _ }
-  - { id: 3, class: _ }
-  - { id: 4, class: _ }
-  - { id: 5, class: _ }
-  - { id: 6, class: _ }
-  - { id: 7, class: _ }
-  - { id: 8, class: _ }
 body: |
   bb.0.entry:
     liveins: %q0, %q1, %q2, %q3
 
     ; CHECK-LABEL: name: test_vector_add
     ; CHECK: [[COPY:%[0-9]+]]:_(<2 x s64>) = COPY %q0
     ; CHECK: [[COPY1:%[0-9]+]]:_(<2 x s64>) = COPY %q1
     ; CHECK: [[COPY2:%[0-9]+]]:_(<2 x s64>) = COPY %q2
     ; CHECK: [[COPY3:%[0-9]+]]:_(<2 x s64>) = COPY %q3
     ; CHECK: [[ADD:%[0-9]+]]:_(<2 x s64>) = G_ADD [[COPY]], [[COPY2]]
     ; CHECK: [[ADD1:%[0-9]+]]:_(<2 x s64>) = G_ADD [[COPY1]], [[COPY3]]
     ; CHECK: %q0 = COPY [[ADD]](<2 x s64>)
     ; CHECK: %q1 = COPY [[ADD1]](<2 x s64>)
-    %0(<2 x s64>) = COPY %q0
-    %1(<2 x s64>) = COPY %q1
-    %2(<2 x s64>) = COPY %q2
-    %3(<2 x s64>) = COPY %q3
-    %4(<4 x s64>) = G_MERGE_VALUES %0, %1
-    %5(<4 x s64>) = G_MERGE_VALUES %2, %3
-    %6(<4 x s64>) = G_ADD %4, %5
-    %7(<2 x s64>), %8(<2 x s64>) = G_UNMERGE_VALUES %6
+    %0:_(<2 x s64>) = COPY %q0
+    %1:_(<2 x s64>) = COPY %q1
+    %2:_(<2 x s64>) = COPY %q2
+    %3:_(<2 x s64>) = COPY %q3
+    %4:_(<4 x s64>) = G_MERGE_VALUES %0, %1
+    %5:_(<4 x s64>) = G_MERGE_VALUES %2, %3
+    %6:_(<4 x s64>) = G_ADD %4, %5
+    %7:_(<2 x s64>), %8:_(<2 x s64>) = G_UNMERGE_VALUES %6
     %q0 = COPY %7
     %q1 = COPY %8
 ...

test/CodeGen/AArch64/GlobalISel/legalize-and.mir

 name:            test_scalar_and_small
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
   - { id: 3, class: _ }
   - { id: 4, class: _ }
   - { id: 5, class: _ }
+  - { id: 6, class: _ }
 body: |
   bb.0.entry:
     liveins: %x0, %x1, %x2, %x3
 
     ; CHECK-LABEL: name: test_scalar_and_small
     ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
     ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY %x1
-    ; CHECK: [[TRUNC:%[0-9]+]]:_(s8) = G_TRUNC [[COPY]](s64)
-    ; CHECK: [[TRUNC1:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
-    ; CHECK: [[TRUNC2:%[0-9]+]]:_(s32) = G_TRUNC [[COPY1]](s64)
-    ; CHECK: [[AND:%[0-9]+]]:_(s32) = G_AND [[TRUNC1]], [[TRUNC2]]
-    ; CHECK: [[TRUNC3:%[0-9]+]]:_(s8) = G_TRUNC [[AND]](s32)
-    ; CHECK: [[ANYEXT:%[0-9]+]]:_(s64) = G_ANYEXT [[TRUNC]](s8)
-    ; CHECK: %x0 = COPY [[ANYEXT]](s64)
+    ; CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: [[TRUNC1:%[0-9]+]]:_(s32) = G_TRUNC [[COPY1]](s64)
+    ; CHECK: [[AND:%[0-9]+]]:_(s32) = G_AND [[TRUNC]], [[TRUNC1]]
+    ; CHECK: [[COPY2:%[0-9]+]]:_(s32) = COPY [[AND]](s32)
+    ; CHECK: %w0 = COPY [[COPY2]](s32)
+    ; CHECK: [[COPY3:%[0-9]+]]:_(s64) = COPY [[COPY]](s64)
+    ; CHECK: %x0 = COPY [[COPY3]](s64)
     %0(s64) = COPY %x0
     %1(s64) = COPY %x1
     %2(s8) = G_TRUNC %0
     %3(s8) = G_TRUNC %1
     %4(s8) = G_AND %2, %3
+    %6(s32) = G_ANYEXT %4
+    %w0 = COPY %6
     %5(s64) = G_ANYEXT %2
     %x0 = COPY %5
 ...

test/CodeGen/AArch64/GlobalISel/legalize-cmp.mir

+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -O0 -run-pass=legalizer -global-isel %s -o - | FileCheck %s
 
 --- |
   target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
   target triple = "aarch64--"
   define void @test_icmp() {
   entry:
     ret void
registers:
   - { id: 3, class: _ }
   - { id: 4, class: _ }
   - { id: 5, class: _ }
   - { id: 6, class: _ }
   - { id: 7, class: _ }
   - { id: 8, class: _ }
   - { id: 9, class: _ }
   - { id: 10, class: _ }
+  - { id: 11, class: _ }
+  - { id: 12, class: _ }
+  - { id: 13, class: _ }
+  - { id: 14, class: _ }
 body: |
   bb.0.entry:
     liveins: %x0, %x1, %x2, %x3
+    ; CHECK-LABEL: name: test_icmp
+    ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY %x0
+    ; CHECK: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(sge), [[COPY]](s64), [[COPY1]]
+    ; CHECK: [[COPY2:%[0-9]+]]:_(s32) = COPY [[ICMP]](s32)
+    ; CHECK: %w0 = COPY [[COPY2]](s32)
+    ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+    ; CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: [[AND:%[0-9]+]]:_(s32) = G_AND [[TRUNC]], [[C]]
+    ; CHECK: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+    ; CHECK: [[TRUNC1:%[0-9]+]]:_(s32) = G_TRUNC [[COPY1]](s64)
+    ; CHECK: [[AND1:%[0-9]+]]:_(s32) = G_AND [[TRUNC1]], [[C1]]
+    ; CHECK: [[ICMP1:%[0-9]+]]:_(s32) = G_ICMP intpred(ult), [[AND]](s32), [[AND1]]
+    ; CHECK: [[COPY3:%[0-9]+]]:_(s32) = COPY [[ICMP1]](s32)
+    ; CHECK: %w0 = COPY [[COPY3]](s32)
+    ; CHECK: [[INTTOPTR:%[0-9]+]]:_(p0) = G_INTTOPTR [[COPY]](s64)
+    ; CHECK: [[ICMP2:%[0-9]+]]:_(s32) = G_ICMP intpred(eq), [[INTTOPTR]](p0), [[INTTOPTR]]
+    ; CHECK: [[COPY4:%[0-9]+]]:_(s32) = COPY [[ICMP2]](s32)
+    ; CHECK: %w0 = COPY [[COPY4]](s32)
     %0(s64) = COPY %x0
     %1(s64) = COPY %x0
 
     %2(s8) = G_TRUNC %0
     %3(s8) = G_TRUNC %1
 
-    ; CHECK: [[CMP1:%[0-9]+]]:_(s32) = G_ICMP intpred(sge), %0(s64), %1
-    ; CHECK: [[CMP_T1:%[0-9]+]]:_(s1) = G_TRUNC [[CMP1]]
     %4(s1) = G_ICMP intpred(sge), %0, %1
+    %11(s32) = G_ANYEXT %4
+    %w0 = COPY %11
 
-    ; CHECK: [[CSTMASK1:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
-    ; CHECK: [[T1:%[0-9]+]]:_(s32) = G_TRUNC %0(s64)
-    ; CHECK: [[AND1:%[0-9]+]]:_(s32) = G_AND [[T1]], [[CSTMASK1]]
-    ; CHECK: [[CSTMASK2:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
-    ; CHECK: [[T2:%[0-9]+]]:_(s32) = G_TRUNC %1(s64)
-    ; CHECK: [[AND2:%[0-9]+]]:_(s32) = G_AND [[T2]], [[CSTMASK2]]
-    ; CHECK: [[CMP2:%[0-9]+]]:_(s32) = G_ICMP intpred(ult), [[AND1]](s32), [[AND2]]
-    ; CHECK: [[CMP_T2:%[0-9]+]]:_(s1) = G_TRUNC [[CMP2]]
     %8(s1) = G_ICMP intpred(ult), %2, %3
+    %12(s32) = G_ANYEXT %8
+    %w0 = COPY %12
 
     %9(p0) = G_INTTOPTR %0(s64)
     %10(s1) = G_ICMP intpred(eq), %9(p0), %9(p0)
+    %14(s32) = G_ANYEXT %10
+    %w0 = COPY %14
 ...

test/CodeGen/AArch64/GlobalISel/legalize-combines.mir

bb.0:
     ; CHECK: [[MV:%[0-9]+]]:_(s64) = G_MERGE_VALUES [[COPY]](s32), [[ADD]](s32)
     ; CHECK: [[EXTRACT:%[0-9]+]]:_(s1) = G_EXTRACT [[MV]](s64), 0
     ; CHECK: [[EXTRACT1:%[0-9]+]]:_(s64) = G_EXTRACT [[MV]](s64), 0
     %0:_(s32) = COPY %w0
 
     %1:_(s32) = G_ADD %0, %0
     %2:_(s64) = G_MERGE_VALUES %0, %1
     %3:_(s1) = G_EXTRACT %2, 0
+    %5:_(s32) = G_ANYEXT %3
+    %w0 = COPY %5
     %4:_(s64) = G_EXTRACT %2, 0
+    %x0 = COPY %4
 ...
 
 ---
 name:            test_combines_3
 body: |
   bb.0:
     liveins: %w0
 
     ; CHECK-LABEL: name: test_combines_3
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
     ; CHECK: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[COPY]]
     ; CHECK: [[ADD1:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[ADD]]
     %0:_(s32) = COPY %w0
 
     %1:_(s32) = G_ADD %0, %0
     %2:_(s64) = G_MERGE_VALUES %0, %1
     %3:_(s32), %4:_(s32) = G_UNMERGE_VALUES %2
     %5:_(s32) = G_ADD %3, %4
+    %w0 = COPY %5
 ...
 
 ---
 name:            test_combines_4
 body: |
   bb.0:
     liveins: %x0
 
     ; CHECK-LABEL: name: test_combines_4
     ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
     ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY [[COPY]](s64)
     ; CHECK: [[ADD:%[0-9]+]]:_(s64) = G_ADD [[COPY1]], [[COPY1]]
     %0:_(s64) = COPY %x0
 
     %1:_(s128) = G_MERGE_VALUES %0, %0
     %2:_(s64) = G_EXTRACT %1, 0
     %3:_(s64) = G_ADD %2, %2
+    %w0 = COPY %3
 ...
 
 ---
 name:            test_combines_5
 body: |
   bb.0:
     liveins: %w0
 
     ; CHECK-LABEL: name: test_combines_5
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
     ; CHECK: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[COPY]]
     ; CHECK: [[ADD1:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[ADD]]
     %0:_(s32) = COPY %w0
 
     %1:_(s32) = G_ADD %0, %0
     %2:_(s64) = G_MERGE_VALUES %0, %1
     %3:_(s32), %4:_(s32) = G_UNMERGE_VALUES %2
     %5:_(s32) = G_ADD %3, %4
+    %w0 = COPY %5
 ...
 
 ---
 name:            test_combines_6
 body: |
   bb.0:
     liveins: %w0
 
     ; Check that we replace all the uses of a G_EXTRACT.
     ; CHECK-LABEL: name: test_combines_6
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
     ; CHECK: [[MUL:%[0-9]+]]:_(s32) = G_MUL [[COPY]], [[COPY]]
     ; CHECK: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[MUL]]
     %0:_(s32) = COPY %w0
 
     %1:_(s32) = G_MERGE_VALUES %0
     %2:_(s32) = G_UNMERGE_VALUES %1
     %3:_(s32) = G_MUL %2, %2
     %4:_(s32) = G_ADD %2, %3
+    %w0 = COPY %4
 ...

test/CodeGen/AArch64/GlobalISel/legalize-constant.mir

registers:
   - { id: 3, class: _ }
   - { id: 4, class: _ }
   - { id: 5, class: _ }
 body: |
   bb.0.entry:
 
     ; CHECK-LABEL: name: test_constant
     ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
-    ; CHECK: [[TRUNC:%[0-9]+]]:_(s1) = G_TRUNC [[C]](s32)
+    ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY [[C]](s32)
+    ; CHECK: %w0 = COPY [[COPY]](s32)
     ; CHECK: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 42
-    ; CHECK: [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[C1]](s32)
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY [[C1]](s32)
+    ; CHECK: %w0 = COPY [[COPY1]](s32)
     ; CHECK: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1
-    ; CHECK: [[TRUNC2:%[0-9]+]]:_(s16) = G_TRUNC [[C2]](s32)
+    ; CHECK: [[COPY2:%[0-9]+]]:_(s32) = COPY [[C2]](s32)
+    ; CHECK: %w0 = COPY [[COPY2]](s32)
     ; CHECK: [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 -1
+    ; CHECK: %w0 = COPY [[C3]](s32)
     ; CHECK: [[C4:%[0-9]+]]:_(s64) = G_CONSTANT i64 1
+    ; CHECK: %x0 = COPY [[C4]](s64)
     ; CHECK: [[C5:%[0-9]+]]:_(s64) = G_CONSTANT i64 0
+    ; CHECK: %x0 = COPY [[C5]](s64)
     %0(s1) = G_CONSTANT i1 0
+    %6:_(s32) = G_ANYEXT %0
+    %w0 = COPY %6
     %1(s8) = G_CONSTANT i8 42
+    %7:_(s32) = G_ANYEXT %1
+    %w0 = COPY %7
     %2(s16) = G_CONSTANT i16 65535
+    %8:_(s32) = G_ANYEXT %2
+    %w0 = COPY %8
     %3(s32) = G_CONSTANT i32 -1
+    %w0 = COPY %3
     %4(s64) = G_CONSTANT i64 1
+    %x0 = COPY %4
     %5(s64) = G_CONSTANT i64 0
+    %x0 = COPY %5
 ...
 
 ---
 name:            test_fconstant
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
 body: |
   bb.0.entry:
 
     ; CHECK-LABEL: name: test_fconstant
     ; CHECK: [[C:%[0-9]+]]:_(s32) = G_FCONSTANT float 1.000000e+00
+    ; CHECK: %w0 = COPY [[C]](s32)
     ; CHECK: [[C1:%[0-9]+]]:_(s64) = G_FCONSTANT double 2.000000e+00
+    ; CHECK: %x0 = COPY [[C1]](s64)
     ; CHECK: [[C2:%[0-9]+]]:_(s32) = G_FCONSTANT half 0xH0000
     ; CHECK: [[FPTRUNC:%[0-9]+]]:_(s16) = G_FPTRUNC [[C2]](s32)
+    ; CHECK: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[FPTRUNC]](s16)
+    ; CHECK: %w0 = COPY [[ANYEXT]](s32)
     %0(s32) = G_FCONSTANT float 1.0
+    %w0 = COPY %0
     %1(s64) = G_FCONSTANT double 2.0
+    %x0 = COPY %1
     %2(s16) = G_FCONSTANT half 0.0
+    %3:_(s32) = G_ANYEXT %2
+    %w0 = COPY %3
 ...
 
 ---
 name:            test_global
 registers:
   - { id: 0, class: _ }
 body: |
   bb.0:
 
     ; CHECK-LABEL: name: test_global
     ; CHECK: [[GV:%[0-9]+]]:_(p0) = G_GLOBAL_VALUE @var
+    ; CHECK: [[PTRTOINT:%[0-9]+]]:_(s64) = G_PTRTOINT [[GV]](p0)
+    ; CHECK: %x0 = COPY [[PTRTOINT]](s64)
     %0(p0) = G_GLOBAL_VALUE @var
+    %1:_(s64) = G_PTRTOINT %0
+    %x0 = COPY %1
 ...

test/CodeGen/AArch64/GlobalISel/legalize-div.mir

+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -O0 -run-pass=legalizer -global-isel %s -o - | FileCheck %s
 
 --- |
   target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
   target triple = "aarch64--"
   define void @test_div() {
   entry:
     ret void
   }
 ...
 
 ---
 name:            test_div
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
   - { id: 3, class: _ }
   - { id: 4, class: _ }
   - { id: 5, class: _ }
 body: |
   bb.0.entry:
     liveins: %x0, %x1, %x2, %x3
+    ; CHECK-LABEL: name: test_div
+    ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY %x1
+    ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 24
+    ; CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: [[SHL:%[0-9]+]]:_(s32) = G_SHL [[TRUNC]], [[C]]
+    ; CHECK: [[ASHR:%[0-9]+]]:_(s32) = G_ASHR [[SHL]], [[C]]
+    ; CHECK: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 24
+    ; CHECK: [[TRUNC1:%[0-9]+]]:_(s32) = G_TRUNC [[COPY1]](s64)
+    ; CHECK: [[SHL1:%[0-9]+]]:_(s32) = G_SHL [[TRUNC1]], [[C1]]
+    ; CHECK: [[ASHR1:%[0-9]+]]:_(s32) = G_ASHR [[SHL1]], [[C1]]
+    ; CHECK: [[SDIV:%[0-9]+]]:_(s32) = G_SDIV [[ASHR]], [[ASHR1]]
+    ; CHECK: [[COPY2:%[0-9]+]]:_(s32) = COPY [[SDIV]](s32)
+    ; CHECK: %w0 = COPY [[COPY2]](s32)
+    ; CHECK: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+    ; CHECK: [[TRUNC2:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: [[AND:%[0-9]+]]:_(s32) = G_AND [[TRUNC2]], [[C2]]
+    ; CHECK: [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+    ; CHECK: [[TRUNC3:%[0-9]+]]:_(s32) = G_TRUNC [[COPY1]](s64)
+    ; CHECK: [[AND1:%[0-9]+]]:_(s32) = G_AND [[TRUNC3]], [[C3]]
+    ; CHECK: [[UDIV:%[0-9]+]]:_(s32) = G_UDIV [[AND]], [[AND1]]
+    ; CHECK: [[COPY3:%[0-9]+]]:_(s32) = COPY [[UDIV]](s32)
+    ; CHECK: %w0 = COPY [[COPY3]](s32)
     %0(s64) = COPY %x0
     %1(s64) = COPY %x1
     %2(s8) = G_TRUNC %0
     %3(s8) = G_TRUNC %1
 
-    ; CHECK: [[A:%.*]]:_(s64) = COPY %x0
-    ; CHECK: [[B:%.*]]:_(s64) = COPY %x1
-    ; CHECK: [[C1:%.*]]:_(s32) = G_CONSTANT i32 24
-    ; CHECK: [[S1:%.*]]:_(s32) = G_TRUNC [[A]]
-    ; CHECK: [[SHL1:%.*]]:_(s32) = G_SHL [[S1]], [[C1]]
-    ; CHECK: [[SEXT1:%.*]]:_(s32) = G_ASHR [[SHL1]], [[C1]]
-    ; CHECK: [[C2:%.*]]:_(s32) = G_CONSTANT i32 24
-    ; CHECK: [[S2:%.*]]:_(s32) = G_TRUNC [[B]]
-    ; CHECK: [[SHL2:%.*]]:_(s32) = G_SHL [[S2]], [[C2]]
-    ; CHECK: [[SEXT2:%.*]]:_(s32) = G_ASHR [[SHL2]], [[C2]]
-    ; CHECK: [[DIV:%.*]]:_(s32) = G_SDIV [[SEXT1]], [[SEXT2]]
-    ; CHECK: [[RES:%.*]]:_(s8) = G_TRUNC [[DIV]]
 
     %4(s8) = G_SDIV %2, %3
+    %6:_(s32) = G_ANYEXT %4
+    %w0 = COPY %6
 
 
-    ; CHECK: [[CMASK1:%.*]]:_(s32) = G_CONSTANT i32 255
-    ; CHECK: [[T1:%.*]]:_(s32) = G_TRUNC [[A]]
-    ; CHECK: [[LHS32:%.*]]:_(s32) = G_AND [[T1]], [[CMASK1]]
-    ; CHECK: [[CMASK2:%.*]]:_(s32) = G_CONSTANT i32 255
-    ; CHECK: [[T2:%.*]]:_(s32) = G_TRUNC [[B]]
-    ; CHECK: [[RHS32:%.*]]:_(s32) = G_AND [[T2]], [[CMASK2]]
-    ; CHECK: [[QUOT32:%[0-9]+]]:_(s32) = G_UDIV [[LHS32]], [[RHS32]]
-    ; CHECK: [[RES:%[0-9]+]]:_(s8) = G_TRUNC [[QUOT32]]
     %5(s8) = G_UDIV %2, %3
+    %7:_(s32) = G_ANYEXT %5
+    %w0 = COPY %7
 
 ...

test/CodeGen/AArch64/GlobalISel/legalize-ext.mir

+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -O0 -run-pass=legalizer -global-isel %s -o - | FileCheck %s
 
 --- |
   target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
   target triple = "aarch64--"
   define void @test_ext() {
   entry:
     ret void
registers:
   - { id: 14, class: _ }
   - { id: 15, class: _ }
   - { id: 16, class: _ }
   - { id: 17, class: _ }
   - { id: 18, class: _ }
 body: |
   bb.0.entry:
     liveins: %x0, %x1, %x2, %x3
+    ; CHECK-LABEL: name: test_ext
+    ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
+    ; CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: %w0 = COPY [[TRUNC]](s32)
+    ; CHECK: [[TRUNC1:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: %w0 = COPY [[TRUNC1]](s32)
+    ; CHECK: [[TRUNC2:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: %w0 = COPY [[TRUNC2]](s32)
+    ; CHECK: [[TRUNC3:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: %w0 = COPY [[TRUNC3]](s32)
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY [[COPY]](s64)
+    ; CHECK: %x0 = COPY [[COPY1]](s64)
+    ; CHECK: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 255
+    ; CHECK: [[COPY2:%[0-9]+]]:_(s64) = COPY [[COPY]](s64)
+    ; CHECK: [[AND:%[0-9]+]]:_(s64) = G_AND [[COPY2]], [[C]]
+    ; CHECK: %x0 = COPY [[AND]](s64)
+    ; CHECK: [[COPY3:%[0-9]+]]:_(s64) = COPY [[COPY]](s64)
+    ; CHECK: %x0 = COPY [[COPY3]](s64)
+    ; CHECK: [[C1:%[0-9]+]]:_(s64) = G_CONSTANT i64 32
+    ; CHECK: [[COPY4:%[0-9]+]]:_(s64) = COPY [[COPY]](s64)
+    ; CHECK: [[SHL:%[0-9]+]]:_(s64) = G_SHL [[COPY4]], [[C1]]
+    ; CHECK: [[ASHR:%[0-9]+]]:_(s64) = G_ASHR [[TRUNC3]]2, [[C1]]
+    ; CHECK: %x0 = COPY [[ASHR]](s64)
+    ; CHECK: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 31
+    ; CHECK: [[TRUNC4:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: [[SHL1:%[0-9]+]]:_(s32) = G_SHL [[TRUNC4]], [[C2]]
+    ; CHECK: [[ASHR1:%[0-9]+]]:_(s32) = G_ASHR [[SHL1]], [[C2]]
+    ; CHECK: %w0 = COPY [[ASHR1]](s32)
+    ; CHECK: [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+    ; CHECK: [[TRUNC5:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: [[AND1:%[0-9]+]]:_(s32) = G_AND [[TRUNC5]], [[C3]]
+    ; CHECK: %w0 = COPY [[AND1]](s32)
+    ; CHECK: [[TRUNC6:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: %w0 = COPY [[TRUNC6]](s32)
+    ; CHECK: [[C4:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+    ; CHECK: [[TRUNC7:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: [[AND2:%[0-9]+]]:_(s32) = G_AND [[TRUNC7]], [[C4]]
+    ; CHECK: %w0 = COPY [[AND2]](s32)
+    ; CHECK: [[TRUNC8:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: %w0 = COPY [[TRUNC8]](s32)
+    ; CHECK: [[C5:%[0-9]+]]:_(s32) = G_CONSTANT i32 16
+    ; CHECK: [[TRUNC9:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: [[SHL2:%[0-9]+]]:_(s32) = G_SHL [[TRUNC9]], [[C5]]
+    ; CHECK: [[ASHR2:%[0-9]+]]:_(s32) = G_ASHR [[SHL2]], [[C5]]
+    ; CHECK: %w0 = COPY [[ASHR2]](s32)
+    ; CHECK: [[C6:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+    ; CHECK: [[TRUNC10:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: [[COPY5:%[0-9]+]]:_(s32) = COPY [[C6]](s32)
+    ; CHECK: [[AND3:%[0-9]+]]:_(s32) = G_AND [[TRUNC10]], [[COPY5]]
+    ; CHECK: [[COPY6:%[0-9]+]]:_(s32) = COPY [[AND3]](s32)
+    ; CHECK: %w0 = COPY [[COPY6]](s32)
+    ; CHECK: [[TRUNC11:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: %w0 = COPY [[TRUNC11]](s32)
+    ; CHECK: [[TRUNC12:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: %w0 = COPY [[TRUNC12]](s32)
+    ; CHECK: [[FPEXT:%[0-9]+]]:_(s64) = G_FPEXT [[TRUNC12]](s32)
+    ; CHECK: %x0 = COPY [[FPEXT]](s64)
     %0(s64) = COPY %x0
 
-    ; CHECK: %1:_(s1) = G_TRUNC %0
-    ; CHECK: %2:_(s8) = G_TRUNC %0
-    ; CHECK: %3:_(s16) = G_TRUNC %0
-    ; CHECK: %4:_(s32) = G_TRUNC %0
     %1(s1) = G_TRUNC %0
+    %19:_(s32) = G_ANYEXT %1
+    %w0 = COPY %19
     %2(s8) = G_TRUNC %0
+    %20:_(s32) = G_ANYEXT %2
+    %w0 = COPY %20
     %3(s16) = G_TRUNC %0
+    %21:_(s32) = G_ANYEXT %3
+    %w0 = COPY %21
     %4(s32) = G_TRUNC %0
+    %w0 = COPY %4
 
-    ; CHECK: %5:_(s64) = G_ANYEXT %1
-    ; CHECK: %6:_(s64) = G_ZEXT %2
-    ; CHECK: %7:_(s64) = G_ANYEXT %3
-    ; CHECK: %8:_(s64) = G_SEXT %4
     %5(s64) = G_ANYEXT %1
+    %x0 = COPY %5
     %6(s64) = G_ZEXT %2
+    %x0 = COPY %6
     %7(s64) = G_ANYEXT %3
+    %x0 = COPY %7
     %8(s64) = G_SEXT %4
+    %x0 = COPY %8
 
-    ; CHECK: %9:_(s32) = G_SEXT %1
-    ; CHECK: %10:_(s32) = G_ZEXT %2
-    ; CHECK: %11:_(s32) = G_ANYEXT %3
     %9(s32) = G_SEXT %1
+    %w0 = COPY %9
     %10(s32) = G_ZEXT %2
+    %w0 = COPY %10
     %11(s32) = G_ANYEXT %3
+    %w0 = COPY %11
 
-    ; CHECK: %12:_(s32) = G_ZEXT %1
-    ; CHECK: %13:_(s32) = G_ANYEXT %2
-    ; CHECK: %14:_(s32) = G_SEXT %3
     %12(s32) = G_ZEXT %1
+    %w0 = COPY %12
     %13(s32) = G_ANYEXT %2
+    %w0 = COPY %13
     %14(s32) = G_SEXT %3
+    %w0 = COPY %14
 
-    ; CHECK: %15:_(s8) = G_ZEXT %1
-    ; CHECK: %16:_(s16) = G_ANYEXT %2
     %15(s8) = G_ZEXT %1
+    %22:_(s32) = G_ANYEXT %15
+    %w0 = COPY %22
     %16(s16) = G_ANYEXT %2
+    %23:_(s32) = G_ANYEXT %16
+    %w0 = COPY %23
 
-    ; CHECK: %18:_(s64) = G_FPEXT %17
     %17(s32) = G_TRUNC  %0
+    %w0 = COPY %17
     %18(s64) = G_FPEXT %17
+    %x0 = COPY %18
 ...

test/CodeGen/AArch64/GlobalISel/legalize-extracts.mir

 # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -mtriple=aarch64-linux-gnu -O0 -run-pass=legalizer -global-isel %s -o - | FileCheck %s
 
 ---
 name:            test_extracts_1
 body: |
   bb.0:
     liveins: %w0
 
     ; Low part of extraction takes entirity of the low register entirely, so
     ; value stored is forwarded directly from first load.
 
     ; CHECK-LABEL: name: test_extracts_1
-    ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
-    ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY %w1
-    ; CHECK: [[COPY2:%[0-9]+]]:_(p0) = COPY %x2
-    ; CHECK: [[LOAD:%[0-9]+]]:_(s64) = G_LOAD [[COPY2]](p0) :: (load 16)
+    ; CHECK: [[COPY:%[0-9]+]]:_(p0) = COPY %x2
+    ; CHECK: [[LOAD:%[0-9]+]]:_(s64) = G_LOAD [[COPY]](p0) :: (load 16)
     ; CHECK: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 8
-    ; CHECK: [[GEP:%[0-9]+]]:_(p0) = G_GEP [[COPY2]], [[C]](s64)
+    ; CHECK: [[GEP:%[0-9]+]]:_(p0) = G_GEP [[COPY]], [[C]](s64)
     ; CHECK: [[LOAD1:%[0-9]+]]:_(s64) = G_LOAD [[GEP]](p0) :: (load 16)
-    ; CHECK: [[COPY3:%[0-9]+]]:_(s64) = COPY [[LOAD]](s64)
-    ; CHECK: G_STORE [[COPY3]](s64), [[COPY2]](p0) :: (store 8)
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY [[LOAD]](s64)
+    ; CHECK: G_STORE [[COPY1]](s64), [[COPY]](p0) :: (store 8)
     ; CHECK: RET_ReallyLR
     %0:_(s64) = COPY %x0
     %1:_(s32) = COPY %w1
     %2:_(p0) = COPY %x2
     %3:_(s128) = G_LOAD %2(p0) :: (load 16)
     %4:_(s64) = G_EXTRACT %3(s128), 0
     G_STORE %4(s64), %2(p0) :: (store 8)
     RET_ReallyLR
 ...
 
 ---
 name:            test_extracts_2
 body: |
   bb.0:
     liveins: %w0
 
       ; Low extraction wipes takes whole low register. High extraction is real.
     ; CHECK-LABEL: name: test_extracts_2
-    ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
-    ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY %w1
-    ; CHECK: [[COPY2:%[0-9]+]]:_(p0) = COPY %x2
-    ; CHECK: [[LOAD:%[0-9]+]]:_(s64) = G_LOAD [[COPY2]](p0) :: (load 16)
+    ; CHECK: [[COPY:%[0-9]+]]:_(p0) = COPY %x2
+    ; CHECK: [[LOAD:%[0-9]+]]:_(s64) = G_LOAD [[COPY]](p0) :: (load 16)
     ; CHECK: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 8
-    ; CHECK: [[GEP:%[0-9]+]]:_(p0) = G_GEP [[COPY2]], [[C]](s64)
+    ; CHECK: [[GEP:%[0-9]+]]:_(p0) = G_GEP [[COPY]], [[C]](s64)
     ; CHECK: [[LOAD1:%[0-9]+]]:_(s64) = G_LOAD [[GEP]](p0) :: (load 16)
-    ; CHECK: [[COPY3:%[0-9]+]]:_(s64) = COPY [[LOAD]](s64)
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY [[LOAD]](s64)
     ; CHECK: [[EXTRACT:%[0-9]+]]:_(s32) = G_EXTRACT [[LOAD1]](s64), 0
-    ; CHECK: [[COPY4:%[0-9]+]]:_(s32) = COPY [[EXTRACT]](s32)
-    ; CHECK: G_STORE [[COPY3]](s64), [[COPY2]](p0) :: (store 8)
-    ; CHECK: G_STORE [[COPY4]](s32), [[COPY2]](p0) :: (store 4)
+    ; CHECK: [[COPY2:%[0-9]+]]:_(s32) = COPY [[EXTRACT]](s32)
+    ; CHECK: G_STORE [[COPY1]](s64), [[COPY]](p0) :: (store 8)
+    ; CHECK: G_STORE [[COPY2]](s32), [[COPY]](p0) :: (store 4)
     ; CHECK: RET_ReallyLR
     %0:_(s64) = COPY %x0
     %1:_(s32) = COPY %w1
     %2:_(p0) = COPY %x2
     %3:_(s128) = G_LOAD %2(p0) :: (load 16)
     %4:_(s64) = G_EXTRACT %3(s128), 0
     %5:_(s32) = G_EXTRACT %3(s128), 64
     G_STORE %4(s64), %2(p0) :: (store 8)
bb.0:
 
 
     ; CHECK-LABEL: name: test_extracts_3
     ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
     ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY %x1
     ; CHECK: [[EXTRACT:%[0-9]+]]:_(s32) = G_EXTRACT [[COPY]](s64), 32
     ; CHECK: [[EXTRACT1:%[0-9]+]]:_(s32) = G_EXTRACT [[COPY1]](s64), 0
     ; CHECK: [[MV:%[0-9]+]]:_(s64) = G_MERGE_VALUES [[EXTRACT]](s32), [[EXTRACT1]](s32)
+    ; CHECK: %x0 = COPY [[MV]](s64)
     ; CHECK: RET_ReallyLR
     %0:_(s64) = COPY %x0
     %1:_(s64) = COPY %x1
     %2:_(s128) = G_MERGE_VALUES %0, %1
     %3:_(s64) = G_EXTRACT %2, 32
+    %x0 = COPY %3
     RET_ReallyLR
 ...
 
 ---
 name:            test_extracts_4
 body: |
   bb.0:
     liveins: %x0, %x1, %x2
 
 
     ; CHECK-LABEL: name: test_extracts_4
     ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
-    ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY %x1
     ; CHECK: [[EXTRACT:%[0-9]+]]:_(s32) = G_EXTRACT [[COPY]](s64), 32
-    ; CHECK: [[COPY2:%[0-9]+]]:_(s32) = COPY [[EXTRACT]](s32)
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY [[EXTRACT]](s32)
+    ; CHECK: %w0 = COPY [[COPY1]](s32)
     ; CHECK: RET_ReallyLR
     %0:_(s64) = COPY %x0
     %1:_(s64) = COPY %x1
     %2:_(s128) = G_MERGE_VALUES %0, %1
     %3:_(s32) = G_EXTRACT %2, 32
+    %w0 = COPY %3
     RET_ReallyLR
 ...

test/CodeGen/AArch64/GlobalISel/legalize-fcmp.mir

+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -O0 -run-pass=legalizer -global-isel %s -o - | FileCheck %s
 
 --- |
   target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
   target triple = "aarch64--"
   define void @test_icmp() {
   entry:
     ret void
registers:
   - { id: 3, class: _ }
   - { id: 4, class: _ }
   - { id: 5, class: _ }
   - { id: 6, class: _ }
   - { id: 7, class: _ }
 body: |
   bb.0.entry:
     liveins: %x0, %x1, %x2, %x3
+    ; CHECK-LABEL: name: test_icmp
+    ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY %x0
+    ; CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: [[TRUNC1:%[0-9]+]]:_(s32) = G_TRUNC [[COPY1]](s64)
+    ; CHECK: [[FCMP:%[0-9]+]]:_(s32) = G_FCMP floatpred(oge), [[COPY]](s64), [[COPY1]]
+    ; CHECK: %w0 = COPY [[FCMP]](s32)
+    ; CHECK: [[FCMP1:%[0-9]+]]:_(s32) = G_FCMP floatpred(uno), [[TRUNC]](s32), [[TRUNC1]]
+    ; CHECK: %w0 = COPY [[FCMP1]](s32)
     %0(s64) = COPY %x0
     %1(s64) = COPY %x0
 
     %2(s32) = G_TRUNC %0
     %3(s32) = G_TRUNC %1
 
-    ; CHECK: [[CMP1:%[0-9]+]]:_(s32) = G_FCMP floatpred(oge), %0(s64), %1
-    ; CHECK: [[TRUNC1:%[0-9]+]]:_(s1) = G_TRUNC [[CMP1]]
     %4(s32) = G_FCMP floatpred(oge), %0, %1
-    %6(s1) = G_TRUNC %4(s32)
+    %w0 = COPY %4
 
-    ; CHECK: [[CMP2:%[0-9]+]]:_(s32) = G_FCMP floatpred(uno), %2(s32), %3
-    ; CHECK: [[TRUNC2:%[0-9]+]]:_(s1) = G_TRUNC [[CMP2]]
     %5(s32) = G_FCMP floatpred(uno), %2, %3
-    %7(s1) = G_TRUNC %5(s32)
+    %w0 = COPY %5
 ...

test/CodeGen/AArch64/GlobalISel/legalize-fptoi.mir

 ...
 
 ---
 name:            test_fptosi_s32_s32
 body: |
   bb.0:
     liveins: %w0
     ; CHECK-LABEL: name: test_fptosi_s32_s32
-    ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
-    ; CHECK: [[FPTOSI:%[0-9]+]]:_(s32) = G_FPTOSI [[COPY]](s32)
-    %0:_(s32) = COPY %w0
+    ; CHECK: [[DEF:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF
+    ; CHECK: [[FPTOSI:%[0-9]+]]:_(s32) = G_FPTOSI [[DEF]](s32)
+    ; CHECK: %w0 = COPY [[FPTOSI]](s32)
+    %0:_(s32) = G_IMPLICIT_DEF
     %1:_(s32) = G_FPTOSI %0
+    %w0 = COPY %1
 ...
 
 ---
 name:            test_fptoui_s32_s32
 body: |
   bb.0:
     liveins: %w0
     ; CHECK-LABEL: name: test_fptoui_s32_s32
-    ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
-    ; CHECK: [[FPTOUI:%[0-9]+]]:_(s32) = G_FPTOUI [[COPY]](s32)
-    %0:_(s32) = COPY %w0
+    ; CHECK: [[DEF:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF
+    ; CHECK: [[FPTOUI:%[0-9]+]]:_(s32) = G_FPTOUI [[DEF]](s32)
+    ; CHECK: %w0 = COPY [[FPTOUI]](s32)
+    %0:_(s32) = G_IMPLICIT_DEF
     %1:_(s32) = G_FPTOUI %0
+    %w0 = COPY %1
 ...
 
 ---
 name:            test_fptosi_s32_s64
 body: |
   bb.0:
     liveins: %x0
     ; CHECK-LABEL: name: test_fptosi_s32_s64
-    ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
-    ; CHECK: [[FPTOSI:%[0-9]+]]:_(s32) = G_FPTOSI [[COPY]](s64)
-    %0:_(s64) = COPY %x0
+    ; CHECK: [[DEF:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF
+    ; CHECK: [[FPTOSI:%[0-9]+]]:_(s32) = G_FPTOSI [[DEF]](s32)
+    ; CHECK: %w0 = COPY [[FPTOSI]](s32)
+    %0:_(s32) = G_IMPLICIT_DEF
     %1:_(s32) = G_FPTOSI %0
+    %w0 = COPY %1
 ...
 
 ---
 name:            test_fptoui_s32_s64
 body: |
   bb.0:
     liveins: %x0
     ; CHECK-LABEL: name: test_fptoui_s32_s64
     ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
     ; CHECK: [[FPTOUI:%[0-9]+]]:_(s32) = G_FPTOUI [[COPY]](s64)
+    ; CHECK: %w0 = COPY [[FPTOUI]](s32)
     %0:_(s64) = COPY %x0
     %1:_(s32) = G_FPTOUI %0
+    %w0 = COPY %1
 ...
 
 ---
 name:            test_fptosi_s64_s32
 body: |
   bb.0:
     liveins: %w0
     ; CHECK-LABEL: name: test_fptosi_s64_s32
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
     ; CHECK: [[FPTOSI:%[0-9]+]]:_(s64) = G_FPTOSI [[COPY]](s32)
+    ; CHECK: %x0 = COPY [[FPTOSI]](s64)
     %0:_(s32) = COPY %w0
     %1:_(s64) = G_FPTOSI %0
+    %x0 = COPY %1
 ...
 
 ---
 name:            test_fptoui_s64_s32
 body: |
   bb.0:
     liveins: %w0
     ; CHECK-LABEL: name: test_fptoui_s64_s32
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
     ; CHECK: [[FPTOUI:%[0-9]+]]:_(s64) = G_FPTOUI [[COPY]](s32)
+    ; CHECK: %x0 = COPY [[FPTOUI]](s64)
     %0:_(s32) = COPY %w0
     %1:_(s64) = G_FPTOUI %0
+    %x0 = COPY %1
 ...
 
 ---
 name:            test_fptosi_s64_s64
 body: |
   bb.0:
     liveins: %x0
     ; CHECK-LABEL: name: test_fptosi_s64_s64
     ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
     ; CHECK: [[FPTOSI:%[0-9]+]]:_(s64) = G_FPTOSI [[COPY]](s64)
+    ; CHECK: %x0 = COPY [[FPTOSI]](s64)
     %0:_(s64) = COPY %x0
     %1:_(s64) = G_FPTOSI %0
+    %x0 = COPY %1
 ...
 
 ---
 name:            test_fptoui_s64_s64
 body: |
   bb.0:
     liveins: %x0
     ; CHECK-LABEL: name: test_fptoui_s64_s64
     ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
     ; CHECK: [[FPTOUI:%[0-9]+]]:_(s64) = G_FPTOUI [[COPY]](s64)
+    ; CHECK: %x0 = COPY [[FPTOUI]](s64)
     %0:_(s64) = COPY %x0
     %1:_(s64) = G_FPTOUI %0
+    %x0 = COPY %1
 ...
 
 
 
 ---
 name:            test_fptosi_s1_s32
 body: |
   bb.0:
     liveins: %w0
     ; CHECK-LABEL: name: test_fptosi_s1_s32
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
     ; CHECK: [[FPTOSI:%[0-9]+]]:_(s32) = G_FPTOSI [[COPY]](s32)
     ; CHECK: [[TRUNC:%[0-9]+]]:_(s1) = G_TRUNC [[FPTOSI]](s32)
+    ; CHECK: %x0 = COPY [[TRUNC]](s1)
     %0:_(s32) = COPY %w0
     %1:_(s1) = G_FPTOSI %0
+    %x0 = COPY %1
 ...
 
 ---
 name:            test_fptoui_s1_s32
 body: |
   bb.0:
     liveins: %w0
     ; CHECK-LABEL: name: test_fptoui_s1_s32
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
     ; CHECK: [[FPTOUI:%[0-9]+]]:_(s32) = G_FPTOUI [[COPY]](s32)
-    ; CHECK: [[TRUNC:%[0-9]+]]:_(s1) = G_TRUNC [[FPTOUI]](s32)
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY [[FPTOUI]](s32)
+    ; CHECK: %w0 = COPY [[COPY1]](s32)
     %0:_(s32) = COPY %w0
     %1:_(s1) = G_FPTOUI %0
+    %2:_(s32) = G_ANYEXT %1
+    %w0 = COPY %2
 ...
 
 ---
 name:            test_fptosi_s8_s64
 body: |
   bb.0:
     liveins: %x0
     ; CHECK-LABEL: name: test_fptosi_s8_s64
     ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
     ; CHECK: [[FPTOSI:%[0-9]+]]:_(s32) = G_FPTOSI [[COPY]](s64)
-    ; CHECK: [[TRUNC:%[0-9]+]]:_(s8) = G_TRUNC [[FPTOSI]](s32)
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY [[FPTOSI]](s32)
+    ; CHECK: %w0 = COPY [[COPY1]](s32)
     %0:_(s64) = COPY %x0
     %1:_(s8) = G_FPTOSI %0
+    %2:_(s32) = G_ANYEXT %1
+    %w0 = COPY %2
 ...
 
 ---
 name:            test_fptoui_s8_s64
 body: |
   bb.0:
     liveins: %x0
     ; CHECK-LABEL: name: test_fptoui_s8_s64
     ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
     ; CHECK: [[FPTOUI:%[0-9]+]]:_(s32) = G_FPTOUI [[COPY]](s64)
-    ; CHECK: [[TRUNC:%[0-9]+]]:_(s8) = G_TRUNC [[FPTOUI]](s32)
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY [[FPTOUI]](s32)
+    ; CHECK: %w0 = COPY [[COPY1]](s32)
     %0:_(s64) = COPY %x0
     %1:_(s8) = G_FPTOUI %0
+    %2:_(s32) = G_ANYEXT %1
+    %w0 = COPY %2
 ...
 
 ---
 name:            test_fptosi_s16_s32
 body: |
   bb.0:
     liveins: %w0
     ; CHECK-LABEL: name: test_fptosi_s16_s32
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
     ; CHECK: [[FPTOSI:%[0-9]+]]:_(s32) = G_FPTOSI [[COPY]](s32)
-    ; CHECK: [[TRUNC:%[0-9]+]]:_(s16) = G_TRUNC [[FPTOSI]](s32)
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY [[FPTOSI]](s32)
+    ; CHECK: %w0 = COPY [[COPY1]](s32)
     %0:_(s32) = COPY %w0
     %1:_(s16) = G_FPTOSI %0
+    %2:_(s32) = G_ANYEXT %1
+    %w0 = COPY %2
 ...
 
 ---
 name:            test_fptoui_s16_s32
 body: |
   bb.0:
     liveins: %w0
     ; CHECK-LABEL: name: test_fptoui_s16_s32
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
     ; CHECK: [[FPTOUI:%[0-9]+]]:_(s32) = G_FPTOUI [[COPY]](s32)
-    ; CHECK: [[TRUNC:%[0-9]+]]:_(s16) = G_TRUNC [[FPTOUI]](s32)
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY [[FPTOUI]](s32)
+    ; CHECK: %w0 = COPY [[COPY1]](s32)
     %0:_(s32) = COPY %w0
     %1:_(s16) = G_FPTOUI %0
+    %2:_(s32) = G_ANYEXT %1
+    %w0 = COPY %2
 ...

test/CodeGen/AArch64/GlobalISel/legalize-inserts.mir

bb.0:
     ; CHECK: [[INS_HI:%[0-9]+]]:_(s32) = G_EXTRACT %2(s64), 32
     ; CHECK: [[VAL_HI:%[0-9]+]]:_(s64) = G_INSERT %1, [[INS_HI]](s32), 0
     ; CHECK: %4:_(s128) = G_MERGE_VALUES [[VAL_LO]](s64), [[VAL_HI]](s64)
     %0:_(s64) = COPY %x0
     %1:_(s64) = COPY %x1
     %2:_(s64) = COPY %x2
     %3:_(s128) = G_MERGE_VALUES %0, %1
     %4:_(s128) = G_INSERT %3, %2, 32
+    %5:_(s64) = G_TRUNC %4
+    %x0 = COPY %5
     RET_ReallyLR
 ...
 
 ---
 name:            test_inserts_6
 body: |
   bb.0:
     liveins: %x0, %x1, %x2
 
 
     ; CHECK-LABEL: name: test_inserts_6
     ; CHECK: [[VAL_LO:%[0-9]+]]:_(s64) = G_INSERT %0, %2(s32), 32
     ; CHECK: %4:_(s128) = G_MERGE_VALUES [[VAL_LO]](s64), %1(s64)
     %0:_(s64) = COPY %x0
     %1:_(s64) = COPY %x1
     %2:_(s32) = COPY %w2
     %3:_(s128) = G_MERGE_VALUES %0, %1
     %4:_(s128) = G_INSERT %3, %2, 32
+    %5:_(s64) = G_TRUNC %4
+    %x0 = COPY %5
     RET_ReallyLR
 ...

test/CodeGen/AArch64/GlobalISel/legalize-itofp.mir

 body: |
   bb.0:
     liveins: %w0
     ; CHECK-LABEL: name: test_sitofp_s32_s32
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
     ; CHECK: [[SITOFP:%[0-9]+]]:_(s32) = G_SITOFP [[COPY]](s32)
     %0:_(s32) = COPY %w0
     %1:_(s32) = G_SITOFP %0
+    %w0 = COPY %1
 ...
 
 ---
 name:            test_uitofp_s32_s32
 body: |
   bb.0:
     liveins: %w0
     ; CHECK-LABEL: name: test_uitofp_s32_s32
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
     ; CHECK: [[UITOFP:%[0-9]+]]:_(s32) = G_UITOFP [[COPY]](s32)
     %0:_(s32) = COPY %w0
     %1:_(s32) = G_UITOFP %0
+    %w0 = COPY %1
 ...
 
 ---
 name:            test_sitofp_s32_s64
 body: |
   bb.0:
     liveins: %x0
     ; CHECK-LABEL: name: test_sitofp_s32_s64
     ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
     ; CHECK: [[SITOFP:%[0-9]+]]:_(s32) = G_SITOFP [[COPY]](s64)
     %0:_(s64) = COPY %x0
     %1:_(s32) = G_SITOFP %0
+    %w0 = COPY %1
 ...
 
 ---
 name:            test_uitofp_s32_s64
 body: |
   bb.0:
     liveins: %x0
     ; CHECK-LABEL: name: test_uitofp_s32_s64
     ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
     ; CHECK: [[UITOFP:%[0-9]+]]:_(s32) = G_UITOFP [[COPY]](s64)
     %0:_(s64) = COPY %x0
     %1:_(s32) = G_UITOFP %0
+    %w0 = COPY %1
 ...
 
 ---
 name:            test_sitofp_s64_s32
 body: |
   bb.0:
     liveins: %w0
     ; CHECK-LABEL: name: test_sitofp_s64_s32
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
     ; CHECK: [[SITOFP:%[0-9]+]]:_(s64) = G_SITOFP [[COPY]](s32)
     %0:_(s32) = COPY %w0
     %1:_(s64) = G_SITOFP %0
+    %w0 = COPY %1
 ...
 
 ---
 name:            test_uitofp_s64_s32
 body: |
   bb.0:
     liveins: %w0
     ; CHECK-LABEL: name: test_uitofp_s64_s32
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
     ; CHECK: [[UITOFP:%[0-9]+]]:_(s64) = G_UITOFP [[COPY]](s32)
     %0:_(s32) = COPY %w0
     %1:_(s64) = G_UITOFP %0
+    %x0 = COPY %1
 ...
 
 ---
 name:            test_sitofp_s64_s64
 body: |
   bb.0:
     liveins: %x0
     ; CHECK-LABEL: name: test_sitofp_s64_s64
     ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
     ; CHECK: [[SITOFP:%[0-9]+]]:_(s64) = G_SITOFP [[COPY]](s64)
     %0:_(s64) = COPY %x0
     %1:_(s64) = G_SITOFP %0
+    %x0 = COPY %1
 ...
 
 ---
 name:            test_uitofp_s64_s64
 body: |
   bb.0:
     liveins: %x0
     ; CHECK-LABEL: name: test_uitofp_s64_s64
     ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
     ; CHECK: [[UITOFP:%[0-9]+]]:_(s64) = G_UITOFP [[COPY]](s64)
     %0:_(s64) = COPY %x0
     %1:_(s64) = G_UITOFP %0
+    %x0 = COPY %1
 ...
 
 
 ---
 name:            test_sitofp_s32_s1
 body: |
   bb.0:
     liveins: %w0
     ; CHECK-LABEL: name: test_sitofp_s32_s1
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
     ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 31
     ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY [[COPY]](s32)
     ; CHECK: [[SHL:%[0-9]+]]:_(s32) = G_SHL [[COPY1]], [[C]]
     ; CHECK: [[ASHR:%[0-9]+]]:_(s32) = G_ASHR [[SHL]], [[C]]
     ; CHECK: [[SITOFP:%[0-9]+]]:_(s32) = G_SITOFP [[ASHR]](s32)
     %0:_(s32) = COPY %w0
     %1:_(s1) = G_TRUNC %0
     %2:_(s32) = G_SITOFP %1
+    %w0 = COPY %2
 ...
 
 ---
 name:            test_uitofp_s32_s1
 body: |
   bb.0:
     liveins: %w0
     ; CHECK-LABEL: name: test_uitofp_s32_s1
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
     ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
     ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY [[COPY]](s32)
     ; CHECK: [[AND:%[0-9]+]]:_(s32) = G_AND [[COPY1]], [[C]]
     ; CHECK: [[UITOFP:%[0-9]+]]:_(s32) = G_UITOFP [[AND]](s32)
     %0:_(s32) = COPY %w0
     %1:_(s1) = G_TRUNC %0
     %2:_(s32) = G_UITOFP %1
+    %w0 = COPY %2
 ...
 
 ---
 name:            test_sitofp_s64_s8
 body: |
   bb.0:
     liveins: %w0
     ; CHECK-LABEL: name: test_sitofp_s64_s8
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
     ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 24
     ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY [[COPY]](s32)
     ; CHECK: [[SHL:%[0-9]+]]:_(s32) = G_SHL [[COPY1]], [[C]]
     ; CHECK: [[ASHR:%[0-9]+]]:_(s32) = G_ASHR [[SHL]], [[C]]
     ; CHECK: [[SITOFP:%[0-9]+]]:_(s64) = G_SITOFP [[ASHR]](s32)
     %0:_(s32) = COPY %w0
     %1:_(s8) = G_TRUNC %0
     %2:_(s64) = G_SITOFP %1
+    %x0 = COPY %2
 ...
 
 ---
 name:            test_uitofp_s64_s8
 body: |
   bb.0:
     liveins: %w0
     ; CHECK-LABEL: name: test_uitofp_s64_s8
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
     ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
     ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY [[COPY]](s32)
     ; CHECK: [[AND:%[0-9]+]]:_(s32) = G_AND [[COPY1]], [[C]]
     ; CHECK: [[UITOFP:%[0-9]+]]:_(s64) = G_UITOFP [[AND]](s32)
     %0:_(s32) = COPY %w0
     %1:_(s8) = G_TRUNC %0
     %2:_(s64) = G_UITOFP %1
+    %x0 = COPY %2
 ...
 
 ---
 name:            test_sitofp_s32_s16
 body: |
   bb.0:
     liveins: %w0
     ; CHECK-LABEL: name: test_sitofp_s32_s16
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
     ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 16
     ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY [[COPY]](s32)
     ; CHECK: [[SHL:%[0-9]+]]:_(s32) = G_SHL [[COPY1]], [[C]]
     ; CHECK: [[ASHR:%[0-9]+]]:_(s32) = G_ASHR [[SHL]], [[C]]
     ; CHECK: [[SITOFP:%[0-9]+]]:_(s32) = G_SITOFP [[ASHR]](s32)
     %0:_(s32) = COPY %w0
     %1:_(s16) = G_TRUNC %0
     %2:_(s32) = G_SITOFP %1
+    %w0 = COPY %2
 ...
 
 ---
 name:            test_uitofp_s32_s16
 body: |
   bb.0:
     liveins: %w0
     ; CHECK-LABEL: name: test_uitofp_s32_s16
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
     ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 65535
     ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY [[COPY]](s32)
     ; CHECK: [[AND:%[0-9]+]]:_(s32) = G_AND [[COPY1]], [[C]]
     ; CHECK: [[UITOFP:%[0-9]+]]:_(s32) = G_UITOFP [[AND]](s32)
     %0:_(s32) = COPY %w0
     %1:_(s16) = G_TRUNC %0
     %2:_(s32) = G_UITOFP %1
+    %w0 = COPY %2
 ...

test/CodeGen/AArch64/GlobalISel/legalize-load-store.mir

registers:
   - { id: 7, class: _ }
   - { id: 8, class: _ }
 body: |
   bb.0.entry:
     liveins: %x0, %x1, %x2, %x3
     ; CHECK-LABEL: name: test_load
     %0(p0) = COPY %x0
 
-    ; CHECK: [[BIT8:%[0-9]+]]:_(s8) = G_LOAD %0(p0) :: (load 1 from %ir.addr)
-    ; CHECK: %1:_(s1) = G_TRUNC [[BIT8]]
     %1(s1) = G_LOAD %0 :: (load 1 from %ir.addr)
+    %9:_(s32) = G_ANYEXT %1
+    %w0 = COPY %9
 
     ; CHECK: %2:_(s8) = G_LOAD %0(p0) :: (load 1 from %ir.addr)
     %2(s8) = G_LOAD %0 :: (load 1 from %ir.addr)
+    %10:_(s32) = G_ANYEXT %2
+    %w0 = COPY %10
 
     ; CHECK: %3:_(s16) = G_LOAD %0(p0) :: (load 2 from %ir.addr)
     %3(s16) = G_LOAD %0 :: (load 2 from %ir.addr)
+    %11:_(s32) = G_ANYEXT %3
+    %w0 = COPY %11
 
     ; CHECK: %4:_(s32) = G_LOAD %0(p0) :: (load 4 from %ir.addr)
     %4(s32) = G_LOAD %0 :: (load 4 from %ir.addr)
+    %w0 = COPY %4
 
     ; CHECK: %5:_(s64) = G_LOAD %0(p0) :: (load 8 from %ir.addr)
     %5(s64) = G_LOAD %0 :: (load 8 from %ir.addr)
+    %x0 = COPY %5
 
-    ; CHECK: %6:_(p0) = G_LOAD %0(p0) :: (load 8 from %ir.addr)
     %6(p0) = G_LOAD %0(p0) :: (load 8 from %ir.addr)
+    %12:_(s64) = G_PTRTOINT %6
+    %x0 = COPY %12
 
     ; CHECK: %7:_(<2 x s32>) = G_LOAD %0(p0) :: (load 8 from %ir.addr)
     %7(<2 x s32>) = G_LOAD %0(p0) :: (load 8 from %ir.addr)
+    %13:_(s64) = G_BITCAST %7
+    %x0 = COPY %13
 
     ; CHECK: [[LOAD0:%[0-9]+]]:_(s64) = G_LOAD %0(p0) :: (load 16 from %ir.addr)
     ; CHECK: [[OFFSET1:%[0-9]+]]:_(s64) = G_CONSTANT i64 8
     ; CHECK: [[GEP1:%[0-9]+]]:_(p0) = G_GEP %0, [[OFFSET1]](s64)
     ; CHECK: [[LOAD1:%[0-9]+]]:_(s64) = G_LOAD [[GEP1]](p0) :: (load 16 from %ir.addr)
     ; CHECK: %8:_(s128) = G_MERGE_VALUES [[LOAD0]](s64), [[LOAD1]](s64)
     %8(s128) = G_LOAD %0(p0) :: (load 16 from %ir.addr)
+    %14:_(s64) = G_TRUNC %8
+    %x0 = COPY %14
 ...
 
 ---
 name:            test_store
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }

test/CodeGen/AArch64/GlobalISel/legalize-mul.mir

bb.0.entry:
     liveins: %x0, %x1, %x2, %x3
 
     ; CHECK-LABEL: name: test_scalar_mul_small
     ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
     ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY %x1
     ; CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
     ; CHECK: [[TRUNC1:%[0-9]+]]:_(s32) = G_TRUNC [[COPY1]](s64)
     ; CHECK: [[MUL:%[0-9]+]]:_(s32) = G_MUL [[TRUNC]], [[TRUNC1]]
-    ; CHECK: [[TRUNC2:%[0-9]+]]:_(s8) = G_TRUNC [[MUL]](s32)
-    ; CHECK: [[ANYEXT:%[0-9]+]]:_(s64) = G_ANYEXT [[TRUNC2]](s8)
+    ; CHECK: [[ANYEXT:%[0-9]+]]:_(s64) = G_ANYEXT [[MUL]](s32)
     ; CHECK: %x0 = COPY [[ANYEXT]](s64)
     %0(s64) = COPY %x0
     %1(s64) = COPY %x1
     %2(s8) = G_TRUNC %0
     %3(s8) = G_TRUNC %1
     %4(s8) = G_MUL %2, %3
     %5(s64) = G_ANYEXT %4
     %x0 = COPY %5
 ...
 
 
 ---
 name:            test_mul_overflow
 body: |
   bb.0:
     liveins: %x0, %x1, %w2, %w3
 
     ; CHECK-LABEL: name: test_mul_overflow
     ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
     ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY %x1
     ; CHECK: [[MUL:%[0-9]+]]:_(s64) = G_MUL [[COPY]], [[COPY1]]
     ; CHECK: [[SMULH:%[0-9]+]]:_(s64) = G_SMULH [[COPY]], [[COPY1]]
     ; CHECK: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 0
     ; CHECK: [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ne), [[SMULH]](s64), [[C]]
-    ; CHECK: [[TRUNC:%[0-9]+]]:_(s1) = G_TRUNC [[ICMP]](s32)
+    ; CHECK: %x0 = COPY [[MUL]](s64)
+    ; CHECK: [[COPY2:%[0-9]+]]:_(s32) = COPY [[ICMP]](s32)
+    ; CHECK: %w0 = COPY [[COPY2]](s32)
     %0:_(s64) = COPY %x0
     %1:_(s64) = COPY %x1
     %2:_(s64), %3:_(s1) = G_SMULO %0, %1
+    %x0 = COPY %2
+    %4:_(s32) = G_ANYEXT %3
+    %w0 = COPY %4
 
 ...

test/CodeGen/AArch64/GlobalISel/legalize-nonpowerof2eltsvec.mir

registers:
   - { id: 3, class: _ }
 body: |
   bb.0:
     liveins: %w0, %w1, %w2
     ; CHECK-LABEL: name: test_legalize_merge_v3s32
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %w0
     ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY %w1
     ; CHECK: [[COPY2:%[0-9]+]]:_(s32) = COPY %w2
-    ; CHECK: [[MV:%[0-9]+]]:_(<3 x s32>) = G_MERGE_VALUES [[COPY]](s32), [[COPY1]](s32), [[COPY2]](s32)
+    ; CHECK: %w0 = COPY [[COPY]](s32)
+    ; CHECK: %w1 = COPY [[COPY1]](s32)
+    ; CHECK: %w2 = COPY [[COPY2]](s32)
     %0(s32) = COPY %w0
     %1(s32) = COPY %w1
     %2(s32) = COPY %w2
     %3(<3 x s32>) = G_MERGE_VALUES %0(s32), %1(s32), %2(s32)
+    %4:_(s32), %5:_(s32), %6:_(s32) = G_UNMERGE_VALUES %3
+    %w0 = COPY %4
+    %w1 = COPY %5
+    %w2 = COPY %6
 ...

test/CodeGen/AArch64/GlobalISel/legalize-or.mir

 # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -O0 -mtriple=aarch64-apple-ios -run-pass=legalizer -global-isel %s -o - | FileCheck %s
 
 ---
 name:            test_scalar_or_small
-registers:
-  - { id: 0, class: _ }
-  - { id: 1, class: _ }
-  - { id: 2, class: _ }
-  - { id: 3, class: _ }
-  - { id: 4, class: _ }
-  - { id: 5, class: _ }
 body: |
   bb.0:
     liveins: %x0, %x1, %x2, %x3
-
     ; CHECK-LABEL: name: test_scalar_or_small
     ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
     ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY %x1
     ; CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
     ; CHECK: [[TRUNC1:%[0-9]+]]:_(s32) = G_TRUNC [[COPY1]](s64)
     ; CHECK: [[OR:%[0-9]+]]:_(s32) = G_OR [[TRUNC]], [[TRUNC1]]
     ; CHECK: [[TRUNC2:%[0-9]+]]:_(s8) = G_TRUNC [[OR]](s32)
-    ; CHECK: [[ANYEXT:%[0-9]+]]:_(s64) = G_ANYEXT [[TRUNC2]](s8)
-    ; CHECK: %x0 = COPY [[ANYEXT]](s64)
-    %0(s64) = COPY %x0
-    %1(s64) = COPY %x1
-    %2(s8) = G_TRUNC %0
-    %3(s8) = G_TRUNC %1
-    %4(s8) = G_OR %2, %3
-    %5(s64) = G_ANYEXT %4
-    %x0 = COPY %5
+    ; CHECK: %x0 = COPY [[TRUNC2]](s8)
+    %0:_(s64) = COPY %x0
+    %1:_(s64) = COPY %x1
+    %2:_(s8) = G_TRUNC %0
+    %3:_(s8) = G_TRUNC %1
+    %4:_(s8) = G_OR %2, %3
+    %x0 = COPY %4
 ...
 
 ---
 name:            test_big_scalar_power_of_2
-registers:
-  - { id: 0, class: _ }
-  - { id: 1, class: _ }
-  - { id: 2, class: _ }
-  - { id: 3, class: _ }
-  - { id: 4, class: _ }
-  - { id: 5, class: _ }
-  - { id: 6, class: _ }
-  - { id: 7, class: _ }
-  - { id: 8, class: _ }
 body: |
   bb.0:
     liveins: %x0, %x1, %x2, %x3
     ; We have a temporary G_MERGE_VALUES in the legalizer that gets
     ; cleaned up with the G_UNMERGE_VALUES, so we end up directly
     ; copying the results of the G_OR ops.
 
     ; CHECK-LABEL: name: test_big_scalar_power_of_2
     ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
     ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY %x1
     ; CHECK: [[COPY2:%[0-9]+]]:_(s64) = COPY %x2
     ; CHECK: [[COPY3:%[0-9]+]]:_(s64) = COPY %x3
     ; CHECK: [[OR:%[0-9]+]]:_(s64) = G_OR [[COPY]], [[COPY2]]
     ; CHECK: [[OR1:%[0-9]+]]:_(s64) = G_OR [[COPY1]], [[COPY3]]
     ; CHECK: %x0 = COPY [[OR]](s64)
     ; CHECK: %x1 = COPY [[OR1]](s64)
     ; CHECK: RET_ReallyLR implicit %x0, implicit %x1
-    %0(s64) = COPY %x0
-    %1(s64) = COPY %x1
-    %2(s64) = COPY %x2
-    %3(s64) = COPY %x3
-    %4(s128) = G_MERGE_VALUES %0, %1
-    %5(s128) = G_MERGE_VALUES %2, %3
-    %6(s128) = G_OR %4, %5
-    %7(s64), %8(s64) = G_UNMERGE_VALUES %6
+    %0:_(s64) = COPY %x0
+    %1:_(s64) = COPY %x1
+    %2:_(s64) = COPY %x2
+    %3:_(s64) = COPY %x3
+    %4:_(s128) = G_MERGE_VALUES %0, %1
+    %5:_(s128) = G_MERGE_VALUES %2, %3
+    %6:_(s128) = G_OR %4, %5
+    %7:_(s64), %8:_(s64) = G_UNMERGE_VALUES %6
     %x0 = COPY %7
     %x1 = COPY %8
     RET_ReallyLR implicit %x0, implicit %x1
 ...

test/CodeGen/AArch64/GlobalISel/legalize-phi.mir

+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -mtriple=aarch64-unknown-unknown -global-isel -verify-machineinstrs -run-pass=legalizer %s -o - | FileCheck %s
 --- |
   ; ModuleID = '/tmp/test.ll'
   source_filename = "/tmp/test.ll"
   target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
   target triple = "aarch64-unknown-unknown"
 
   define i32 @legalize_phi(i32 %argc) {
registers:
   - { id: 5, class: _, preferred-register: '' }
   - { id: 6, class: _, preferred-register: '' }
   - { id: 7, class: _, preferred-register: '' }
   - { id: 8, class: _, preferred-register: '' }
   - { id: 9, class: _, preferred-register: '' }
   - { id: 10, class: _, preferred-register: '' }
 liveins:
 body:             |
+  ; CHECK-LABEL: name: legalize_phi
+  ; CHECK: bb.0:
+  ; CHECK:   successors: %bb.1(0x40000000), %bb.2(0x40000000)
+  ; CHECK:   liveins: %w0
+  ; CHECK:   [[COPY:%[0-9]+]]:_(s32) = COPY %w0
+  ; CHECK:   [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
+  ; CHECK:   [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+  ; CHECK:   [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 2
+  ; CHECK:   [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ugt), [[COPY]](s32), [[C]]
+  ; CHECK:   [[TRUNC:%[0-9]+]]:_(s1) = G_TRUNC [[ICMP]](s32)
+  ; CHECK:   G_BRCOND [[TRUNC]](s1), %bb.1
+  ; CHECK:   G_BR %bb.2
+  ; CHECK: bb.1:
+  ; CHECK:   successors: %bb.3(0x80000000)
+  ; CHECK:   [[ADD:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[C1]]
+  ; CHECK:   [[TRUNC1:%[0-9]+]]:_(s16) = G_TRUNC [[ADD]](s32)
+  ; CHECK:   G_BR %bb.3
+  ; CHECK: bb.2:
+  ; CHECK:   successors: %bb.3(0x80000000)
+  ; CHECK:   [[ADD1:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[C2]]
+  ; CHECK:   [[TRUNC2:%[0-9]+]]:_(s16) = G_TRUNC [[ADD1]](s32)
+  ; CHECK: bb.3:
+  ; CHECK:   [[PHI:%[0-9]+]]:_(s16) = G_PHI [[TRUNC1]](s16), %bb.1, [[TRUNC2]](s16), %bb.2
+  ; CHECK:   [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+  ; CHECK:   [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[PHI]](s16)
+  ; CHECK:   [[AND:%[0-9]+]]:_(s32) = G_AND [[ANYEXT]], [[C3]]
+  ; CHECK:   %w0 = COPY [[AND]](s32)
+  ; CHECK:   RET_ReallyLR implicit %w0
   bb.0:
    ; Test that we insert legalization artifacts(Truncs here) into the correct BBs
    ; while legalizing the G_PHI to s16.
-   ; CHECK-LABEL: name: legalize_phi
-   ; CHECK-LABEL: bb.1:
-   ; CHECK: [[ADD_BB1:%.*]]:_(s32) = G_ADD
-   ; CHECK: [[RES_BB1:%.*]]:_(s16) = G_TRUNC [[ADD_BB1]]
-
-   ; CHECK-LABEL: bb.2:
-   ; CHECK: [[ADD_BB2:%.*]]:_(s32) = G_ADD
-   ; CHECK: [[RES_BB2:%.*]]:_(s16) = G_TRUNC [[ADD_BB2]]
-
-   ; CHECK-LABEL: bb.3:
-   ; CHECK: [[RES_PHI:%.*]]:_(s16) = G_PHI [[RES_BB1]](s16), %bb.1, [[RES_BB2]](s16), %bb.2
-   ; CHECK: [[RES:%.*]]:_(s1) = G_TRUNC [[RES_PHI]]
+
+
     successors: %bb.1(0x40000000), %bb.2(0x40000000)
     liveins: %w0
 
     %0(s32) = COPY %w0
     %1(s32) = G_CONSTANT i32 0
     %3(s32) = G_CONSTANT i32 1
     %6(s32) = G_CONSTANT i32 2
     %2(s1) = G_ICMP intpred(ugt), %0(s32), %1
registers:
   - { id: 0, class: _, preferred-register: '' }
   - { id: 1, class: _, preferred-register: '' }
   - { id: 2, class: _, preferred-register: '' }
   - { id: 3, class: _, preferred-register: '' }
   - { id: 4, class: _, preferred-register: '' }
   - { id: 5, class: _, preferred-register: '' }
 liveins:
 body:             |
-  bb.1:
-   ; CHECK-LABEL: name: legalize_phi_ptr
-   ; CHECK-LABEL: bb.0:
-   ; CHECK: [[A:%[0-9]+]]:_(p0) = COPY %x0
-   ; CHECK: [[B:%[0-9]+]]:_(p0) = COPY %x1
-   ; CHECK: [[CE:%[0-9]+]]:_(s32) = COPY %w2
-   ; CHECK: [[C:%[0-9]+]]:_(s1) = G_TRUNC [[CE]]
-
-   ; CHECK-LABEL: bb.1:
-   ; CHECK-LABEL: bb.2:
-   ; CHECK: %3:_(p0) = G_PHI [[A]](p0), %bb.0, [[B]](p0), %bb.1
-   ; CHECK: %x0 = COPY %3(p0)
+  ; CHECK: bb.0:
+  ; CHECK:   successors: %bb.1(0x40000000), %bb.2(0x40000000)
+  ; CHECK:   liveins: %w2, %x0, %x1
+  ; CHECK:   [[COPY:%[0-9]+]]:_(p0) = COPY %x0
+  ; CHECK:   [[COPY1:%[0-9]+]]:_(p0) = COPY %x1
+  ; CHECK:   [[COPY2:%[0-9]+]]:_(s32) = COPY %w2
+  ; CHECK:   [[TRUNC:%[0-9]+]]:_(s1) = G_TRUNC [[COPY2]](s32)
+  ; CHECK:   G_BRCOND [[TRUNC]](s1), %bb.1
+  ; CHECK:   G_BR %bb.2
+  ; CHECK: bb.1:
+  ; CHECK:   successors: %bb.2(0x80000000)
+  ; CHECK: bb.2:
+  ; CHECK:   [[PHI:%[0-9]+]]:_(p0) = G_PHI [[COPY]](p0), %bb.0, [[COPY1]](p0), %bb.1
+  ; CHECK:   %x0 = COPY [[PHI]](p0)
+  ; CHECK:   RET_ReallyLR implicit %x0
+  bb.1:
+
     successors: %bb.2, %bb.3
     liveins: %w2, %x0, %x1
 
     %0(p0) = COPY %x0
     %1(p0) = COPY %x1
     %4(s32) = COPY %w2
     %2(s1) = G_TRUNC %4(s32)
     G_BRCOND %2(s1), %bb.2
registers:
   - { id: 5, class: _, preferred-register: '' }
   - { id: 6, class: _, preferred-register: '' }
   - { id: 7, class: _, preferred-register: '' }
   - { id: 8, class: _, preferred-register: '' }
   - { id: 9, class: _, preferred-register: '' }
   - { id: 10, class: _, preferred-register: '' }
 liveins:
 body:             |
+  ; CHECK-LABEL: name: legalize_phi_empty
+  ; CHECK: bb.0:
+  ; CHECK:   successors: %bb.1(0x40000000), %bb.2(0x40000000)
+  ; CHECK:   liveins: %w0
+  ; CHECK:   [[COPY:%[0-9]+]]:_(s32) = COPY %w0
+  ; CHECK:   [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
+  ; CHECK:   [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 3
+  ; CHECK:   [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+  ; CHECK:   [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ugt), [[COPY]](s32), [[C]]
+  ; CHECK:   [[TRUNC:%[0-9]+]]:_(s1) = G_TRUNC [[ICMP]](s32)
+  ; CHECK:   [[ADD:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[C1]]
+  ; CHECK:   G_BRCOND [[TRUNC]](s1), %bb.1
+  ; CHECK:   G_BR %bb.2
+  ; CHECK: bb.1:
+  ; CHECK:   successors: %bb.3(0x80000000)
+  ; CHECK:   [[ADD1:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[C2]]
+  ; CHECK:   [[TRUNC1:%[0-9]+]]:_(s16) = G_TRUNC [[ADD1]](s32)
+  ; CHECK:   G_BR %bb.3
+  ; CHECK: bb.2:
+  ; CHECK:   successors: %bb.3(0x80000000)
+  ; CHECK:   [[TRUNC2:%[0-9]+]]:_(s16) = G_TRUNC [[ADD]](s32)
+  ; CHECK: bb.3:
+  ; CHECK:   [[PHI:%[0-9]+]]:_(s16) = G_PHI [[TRUNC1]](s16), %bb.1, [[TRUNC2]](s16), %bb.2
+  ; CHECK:   [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+  ; CHECK:   [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[PHI]](s16)
+  ; CHECK:   [[AND:%[0-9]+]]:_(s32) = G_AND [[ANYEXT]], [[C3]]
+  ; CHECK:   %w0 = COPY [[AND]](s32)
+  ; CHECK:   RET_ReallyLR implicit %w0
   bb.0:
     successors: %bb.1(0x40000000), %bb.2(0x40000000)
     liveins: %w0
    ; Test that we properly legalize a phi with a predecessor that's empty
-   ; CHECK-LABEL: name: legalize_phi_empty
-   ; CHECK-LABEL: bb.0:
-   ; CHECK: [[ENTRY_ADD:%.*]]:_(s32) = G_ADD
 
-   ; CHECK-LABEL: bb.1:
-   ; CHECK: [[ADD_BB1:%.*]]:_(s32) = G_ADD
-   ; CHECK: [[RES_BB1:%.*]]:_(s16) = G_TRUNC [[ADD_BB1]]
 
-   ; CHECK-LABEL: bb.2:
-   ; CHECK: [[RES_BB2:%.*]]:_(s16) = G_TRUNC [[ENTRY_ADD]]
 
-   ; CHECK: [[RES_PHI:%.*]]:_(s16) = G_PHI [[RES_BB1]](s16), %bb.1, [[RES_BB2]](s16), %bb.2
-   ; CHECK: [[RES:%.*]]:_(s1) = G_TRUNC [[RES_PHI]]
 
     %0(s32) = COPY %w0
     %1(s32) = G_CONSTANT i32 0
     %3(s32) = G_CONSTANT i32 3
     %6(s32) = G_CONSTANT i32 1
     %2(s1) = G_ICMP intpred(ugt), %0(s32), %1
     %4(s32) = G_ADD %0, %3
     %5(s1) = G_TRUNC %4(s32)
registers:
   - { id: 2, class: _, preferred-register: '' }
   - { id: 3, class: _, preferred-register: '' }
   - { id: 4, class: _, preferred-register: '' }
   - { id: 5, class: _, preferred-register: '' }
   - { id: 6, class: _, preferred-register: '' }
   - { id: 7, class: _, preferred-register: '' }
 liveins:
 body:             |
+  ; CHECK-LABEL: name: legalize_phi_loop
+  ; CHECK: bb.0:
+  ; CHECK:   successors: %bb.1(0x80000000)
+  ; CHECK:   liveins: %w0
+  ; CHECK:   [[COPY:%[0-9]+]]:_(s32) = COPY %w0
+  ; CHECK:   [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+  ; CHECK:   [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
+  ; CHECK:   [[TRUNC:%[0-9]+]]:_(s16) = G_TRUNC [[C1]](s32)
+  ; CHECK: bb.1:
+  ; CHECK:   successors: %bb.1(0x40000000), %bb.2(0x40000000)
+  ; CHECK:   [[PHI:%[0-9]+]]:_(s16) = G_PHI [[TRUNC]](s16), %bb.0, %18(s16), %bb.1
+  ; CHECK:   [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[PHI]](s16)
+  ; CHECK:   [[COPY1:%[0-9]+]]:_(s32) = COPY [[C]](s32)
+  ; CHECK:   [[ADD:%[0-9]+]]:_(s32) = G_ADD [[ANYEXT]], [[COPY1]]
+  ; CHECK:   [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[ADD]](s32)
+  ; CHECK:   [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+  ; CHECK:   [[COPY2:%[0-9]+]]:_(s32) = COPY [[ADD]](s32)
+  ; CHECK:   [[AND:%[0-9]+]]:_(s32) = G_AND [[COPY2]], [[C2]]
+  ; CHECK:   [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ugt), [[AND]](s32), [[COPY]]
+  ; CHECK:   [[TRUNC2:%[0-9]+]]:_(s1) = G_TRUNC [[ICMP]](s32)
+  ; CHECK:   [[TRUNC3:%[0-9]+]]:_(s16) = G_TRUNC [[ADD]](s32)
+  ; CHECK:   G_BRCOND [[TRUNC2]](s1), %bb.1
+  ; CHECK: bb.2:
+  ; CHECK:   [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+  ; CHECK:   [[COPY3:%[0-9]+]]:_(s32) = COPY [[ADD]](s32)
+  ; CHECK:   [[AND1:%[0-9]+]]:_(s32) = G_AND [[COPY3]], [[C3]]
+  ; CHECK:   %w0 = COPY [[AND1]](s32)
+  ; CHECK:   RET_ReallyLR implicit %w0
   bb.0:
     successors: %bb.1(0x80000000)
     liveins: %w0
    ; Test that we properly legalize a phi that uses a value from the same BB
-   ; CHECK-LABEL: name: legalize_phi_loop
-   ; CHECK-LABEL: bb.0:
-   ; CHECK: [[C0:%.*]]:_(s32) = G_CONSTANT i32 0
-   ; CHECK: [[RES_BB1:%.*]]:_(s16) = G_TRUNC [[C0]]
-
-   ; CHECK-LABEL: bb.1:
-   ; CHECK: [[RES_PHI:%.*]]:_(s16) = G_PHI [[RES_BB1]](s16), %bb.0, [[RES_BB2:%.*]](s16), %bb.1
-   ; CHECK-NEXT: G_ANYEXT [[RES_PHI]]
-   ; CHECK: [[RES_BB2]]:_(s16) = G_ANYEXT
+
     %0(s32) = COPY %w0
     %2(s8) = G_CONSTANT i8 1
     %7(s8) = G_CONSTANT i8 0
 
   bb.1:
     successors: %bb.1(0x40000000), %bb.3(0x40000000)
 
     %1(s8) = G_PHI %7(s8), %bb.0, %3(s8), %bb.1

 registers:
   - { id: 0, class: _, preferred-register: '' }
   - { id: 1, class: _, preferred-register: '' }
   - { id: 2, class: _, preferred-register: '' }
   - { id: 3, class: _, preferred-register: '' }
   - { id: 4, class: _, preferred-register: '' }
 liveins:
 body:             |
+  ; CHECK-LABEL: name: legalize_phi_cycle
+  ; CHECK: bb.0:
+  ; CHECK:   successors: %bb.1(0x80000000)
+  ; CHECK:   liveins: %w0
+  ; CHECK:   [[COPY:%[0-9]+]]:_(s32) = COPY %w0
+  ; CHECK:   [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
+  ; CHECK:   [[TRUNC:%[0-9]+]]:_(s16) = G_TRUNC [[C]](s32)
+  ; CHECK: bb.1:
+  ; CHECK:   successors: %bb.1(0x40000000), %bb.2(0x40000000)
+  ; CHECK:   [[PHI:%[0-9]+]]:_(s16) = G_PHI [[TRUNC]](s16), %bb.0, %8(s16), %bb.1
+  ; CHECK:   [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[PHI]](s16)
+  ; CHECK:   [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+  ; CHECK:   [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[PHI]](s16)
+  ; CHECK:   [[AND:%[0-9]+]]:_(s32) = G_AND [[ANYEXT]], [[C1]]
+  ; CHECK:   [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ugt), [[AND]](s32), [[COPY]]
+  ; CHECK:   [[TRUNC2:%[0-9]+]]:_(s1) = G_TRUNC [[ICMP]](s32)
+  ; CHECK:   [[COPY1:%[0-9]+]]:_(s16) = COPY [[PHI]](s16)
+  ; CHECK:   G_BRCOND [[TRUNC2]](s1), %bb.1
+  ; CHECK: bb.2:
+  ; CHECK:   %w0 = COPY [[AND]](s32)
+  ; CHECK:   RET_ReallyLR implicit %w0
   bb.0:
     successors: %bb.1(0x80000000)
     liveins: %w0
    ; Test that we properly legalize a phi that uses itself
-   ; CHECK-LABEL: name: legalize_phi_cycle
-   ; CHECK-LABEL: bb.0:
-   ; CHECK: [[C0:%.*]]:_(s32) = G_CONSTANT i32 0
-   ; CHECK: [[RES_BB1:%.*]]:_(s16) = G_TRUNC [[C0]]
-
-   ; CHECK-LABEL: bb.1:
-   ; CHECK: [[RES_PHI:%.*]]:_(s16) = G_PHI [[RES_BB1]](s16), %bb.0, [[RES_BB2:%.*]](s16), %bb.1
-   ; CHECK-NEXT: G_TRUNC
-   ; CHECK: [[RES_BB2]]:_(s16) = COPY
+
 
     %0(s32) = COPY %w0
     %4(s8) = G_CONSTANT i8 0
 
   bb.1:
     successors: %bb.1(0x40000000), %bb.3(0x40000000)
 
     %1(s8) = G_PHI %4(s8), %bb.0, %1(s8), %bb.1
registers:
   - { id: 9, class: _, preferred-register: '' }
   - { id: 10, class: _, preferred-register: '' }
   - { id: 11, class: _, preferred-register: '' }
   - { id: 12, class: _, preferred-register: '' }
   - { id: 13, class: _, preferred-register: '' }
   - { id: 14, class: _, preferred-register: '' }
 liveins:
 body:             |
+  ; CHECK-LABEL: name: legalize_phi_same_bb
+  ; CHECK: bb.0:
+  ; CHECK:   successors: %bb.1(0x40000000), %bb.2(0x40000000)
+  ; CHECK:   liveins: %w0
+  ; CHECK:   [[COPY:%[0-9]+]]:_(s32) = COPY %w0
+  ; CHECK:   [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
+  ; CHECK:   [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 3
+  ; CHECK:   [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+  ; CHECK:   [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 42
+  ; CHECK:   [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ugt), [[COPY]](s32), [[C]]
+  ; CHECK:   [[TRUNC:%[0-9]+]]:_(s1) = G_TRUNC [[ICMP]](s32)
+  ; CHECK:   [[ADD:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[C1]]
+  ; CHECK:   G_BRCOND [[TRUNC]](s1), %bb.1
+  ; CHECK:   G_BR %bb.2
+  ; CHECK: bb.1:
+  ; CHECK:   successors: %bb.3(0x80000000)
+  ; CHECK:   [[ADD1:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[C2]]
+  ; CHECK:   [[TRUNC1:%[0-9]+]]:_(s16) = G_TRUNC [[ADD1]](s32)
+  ; CHECK:   [[TRUNC2:%[0-9]+]]:_(s16) = G_TRUNC [[ADD1]](s32)
+  ; CHECK:   G_BR %bb.3
+  ; CHECK: bb.2:
+  ; CHECK:   successors: %bb.3(0x80000000)
+  ; CHECK:   [[TRUNC3:%[0-9]+]]:_(s16) = G_TRUNC [[C3]](s32)
+  ; CHECK:   [[TRUNC4:%[0-9]+]]:_(s16) = G_TRUNC [[ADD]](s32)
+  ; CHECK: bb.3:
+  ; CHECK:   [[PHI:%[0-9]+]]:_(s16) = G_PHI [[TRUNC2]](s16), %bb.1, [[TRUNC4]](s16), %bb.2
+  ; CHECK:   [[PHI1:%[0-9]+]]:_(s16) = G_PHI [[TRUNC1]](s16), %bb.1, [[TRUNC3]](s16), %bb.2
+  ; CHECK:   [[C4:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+  ; CHECK:   [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[PHI]](s16)
+  ; CHECK:   [[AND:%[0-9]+]]:_(s32) = G_AND [[ANYEXT]], [[C4]]
+  ; CHECK:   [[C5:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+  ; CHECK:   [[ANYEXT1:%[0-9]+]]:_(s32) = G_ANYEXT [[PHI1]](s16)
+  ; CHECK:   [[AND1:%[0-9]+]]:_(s32) = G_AND [[ANYEXT1]], [[C5]]
+  ; CHECK:   [[ADD2:%[0-9]+]]:_(s32) = G_ADD [[C]]1, [[C]]2
+  ; CHECK:   %w0 = COPY [[C]]3(s32)
+  ; CHECK:   RET_ReallyLR implicit %w0
   bb.0:
     successors: %bb.1(0x40000000), %bb.2(0x40000000)
     liveins: %w0
    ; Make sure that we correctly insert the new legalized G_PHI at the
    ; correct location (ie make sure G_PHIs are the first insts in the BB).
-   ; CHECK-LABEL: name: legalize_phi_same_bb
-   ; CHECK-LABEL: bb.0:
-   ; CHECK: [[C42:%.*]]:_(s32) = G_CONSTANT i32 42
-   ; CHECK: [[ENTRY_ADD:%.*]]:_(s32) = G_ADD
-
-   ; CHECK-LABEL: bb.1:
-   ; CHECK: [[BB1_ADD:%.*]]:_(s32) = G_ADD
-   ; CHECK: [[RES1_BB1:%.*]]:_(s16) = G_TRUNC [[BB1_ADD]]
-   ; CHECK: [[RES2_BB1:%.*]]:_(s16) = G_TRUNC [[BB1_ADD]]
-
-   ; CHECK-LABEL: bb.2:
-   ; CHECK: [[RES1_BB2:%.*]]:_(s16) = G_TRUNC [[ENTRY_ADD]]
-   ; CHECK: [[RES2_BB2:%.*]]:_(s16) = G_TRUNC [[C42]]
-
-   ; CHECK-LABEL: bb.3:
-   ; CHECK: [[RES1_PHI:%.*]]:_(s16) = G_PHI [[RES1_BB1]](s16), %bb.1, [[RES1_BB2]](s16), %bb.2
-   ; CHECK-NEXT: [[RES_PHI:%.*]]:_(s16) = G_PHI [[RES2_BB1]](s16), %bb.1, [[RES2_BB2]](s16), %bb.2
-   ; CHECK-NEXT: G_TRUNC
-   ; CHECK-NEXT: G_TRUNC
+
+
+
 
     %0(s32) = COPY %w0
     %1(s32) = G_CONSTANT i32 0
     %3(s32) = G_CONSTANT i32 3
     %6(s32) = G_CONSTANT i32 1
     %14(s8) = G_CONSTANT i8 42
     %2(s1) = G_ICMP intpred(ugt), %0(s32), %1
     %4(s32) = G_ADD %0, %3
registers:
   - { id: 10, class: _, preferred-register: '' }
   - { id: 11, class: _, preferred-register: '' }
   - { id: 12, class: _, preferred-register: '' }
   - { id: 13, class: _, preferred-register: '' }
   - { id: 14, class: _, preferred-register: '' }
   - { id: 15, class: _, preferred-register: '' }
 liveins:
 body:             |
+  ; CHECK-LABEL: name: legalize_phi_diff_bb
+  ; CHECK: bb.0:
+  ; CHECK:   successors: %bb.1(0x40000000), %bb.2(0x40000000)
+  ; CHECK:   liveins: %w0, %w1
+  ; CHECK:   [[COPY:%[0-9]+]]:_(s32) = COPY %w0
+  ; CHECK:   [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
+  ; CHECK:   [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 3
+  ; CHECK:   [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+  ; CHECK:   [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 44
+  ; CHECK:   [[C4:%[0-9]+]]:_(s32) = G_CONSTANT i32 43
+  ; CHECK:   [[ICMP:%[0-9]+]]:_(s32) = G_ICMP intpred(ugt), [[COPY]](s32), [[C]]
+  ; CHECK:   [[TRUNC:%[0-9]+]]:_(s1) = G_TRUNC [[ICMP]](s32)
+  ; CHECK:   [[ADD:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[C1]]
+  ; CHECK:   [[TRUNC1:%[0-9]+]]:_(s16) = G_TRUNC [[ADD]](s32)
+  ; CHECK:   [[TRUNC2:%[0-9]+]]:_(s16) = G_TRUNC [[ADD]](s32)
+  ; CHECK:   G_BRCOND [[TRUNC]](s1), %bb.1
+  ; CHECK:   G_BR %bb.2
+  ; CHECK: bb.1:
+  ; CHECK:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
+  ; CHECK:   [[PHI:%[0-9]+]]:_(s16) = G_PHI [[TRUNC2]](s16), %bb.0, [[C]]4(s16), %bb.1
+  ; CHECK:   [[TRUNC3:%[0-9]+]]:_(s8) = G_TRUNC [[PHI]](s16)
+  ; CHECK:   [[C5:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+  ; CHECK:   [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[PHI]](s16)
+  ; CHECK:   [[AND:%[0-9]+]]:_(s32) = G_AND [[ANYEXT]], [[C5]]
+  ; CHECK:   [[ADD1:%[0-9]+]]:_(s32) = G_ADD [[AND]], [[C2]]
+  ; CHECK:   [[ICMP1:%[0-9]+]]:_(s32) = G_ICMP intpred(ugt), [[ADD1]](s32), [[C3]]
+  ; CHECK:   [[TRUNC4:%[0-9]+]]:_(s1) = G_TRUNC [[ICMP1]](s32)
+  ; CHECK:   [[COPY1:%[0-9]+]]:_(s16) = COPY [[PHI]](s16)
+  ; CHECK:   [[TRUNC5:%[0-9]+]]:_(s16) = G_TRUNC [[C4]](s32)
+  ; CHECK:   G_BRCOND [[TRUNC4]](s1), %bb.2
+  ; CHECK:   G_BR %bb.1
+  ; CHECK: bb.2:
+  ; CHECK:   [[PHI1:%[0-9]+]]:_(s16) = G_PHI [[COPY1]](s16), %bb.1, [[TRUNC1]](s16), %bb.0
+  ; CHECK:   [[C6:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+  ; CHECK:   [[ANYEXT1:%[0-9]+]]:_(s32) = G_ANYEXT [[PHI1]](s16)
+  ; CHECK:   [[AND1:%[0-9]+]]:_(s32) = G_AND [[C]]0, [[C6]]
+  ; CHECK:   %w0 = COPY [[AND1]](s32)
+  ; CHECK:   RET_ReallyLR implicit %w0
   bb.0:
     successors: %bb.1(0x40000000), %bb.3(0x40000000)
     liveins: %w0, %w1
    ; Make sure that we correctly legalize PHIs sharing common defs
    ; in different BBs.
-   ; CHECK-LABEL: name: legalize_phi_diff_bb
-   ; CHECK-LABEL: bb.0:
-   ; CHECK: [[C44:%.*]]:_(s32) = G_CONSTANT i32 44
-   ; CHECK: [[C43:%.*]]:_(s32) = G_CONSTANT i32 43
-   ; CHECK: [[ENTRY_ADD:%.*]]:_(s32) = G_ADD
-   ; CHECK: [[RES_ENTRY:%.*]]:_(s16) = G_TRUNC [[ENTRY_ADD]]
-   ; CHECK: [[RES_ENTRY1:%.*]]:_(s16) = G_TRUNC [[ENTRY_ADD]]
-
-   ; CHECK-LABEL: bb.1:
-   ; CHECK: [[RES1_PHI:%.*]]:_(s16) = G_PHI [[RES_ENTRY]](s16), %bb.0, [[RES_BB1:%.*]](s16), %bb.1
-   ; CHECK: [[RES_BB1:%.*]]:_(s16) = G_TRUNC
-   ; CHECK: [[RES_FOR_BB2:%.*]]:_(s16) = COPY [[RES1_PHI]]
-
-   ; CHECK-LABEL: bb.2:
-   ; CHECK: [[RES2_PHI:%.*]]:_(s16) = G_PHI [[RES_FOR_BB2]](s16), %bb.1, [[RES_ENTRY1:%.*]](s16), %bb.0
-   ; CHECK-NEXT: G_TRUNC
+
+
 
     %0(s32) = COPY %w0
     %1(s32) = COPY %w1
     %2(s32) = G_CONSTANT i32 0
     %4(s32) = G_CONSTANT i32 3
     %9(s32) = G_CONSTANT i32 1
     %11(s32) = G_CONSTANT i32 44
     %15(s8) = G_CONSTANT i8 43

test/CodeGen/AArch64/GlobalISel/legalize-pow.mir

bb.0.entry:
     %2:_(s32) = COPY %s2
     %3:_(s32) = COPY %s3
 
     ; CHECK: %d0 = COPY %0
     ; CHECK: %d1 = COPY %1
     ; CHECK: BL $pow, csr_aarch64_aapcs, implicit-def %lr, implicit %sp, implicit %d0, implicit %d1, implicit-def %d0
     ; CHECK: %4:_(s64) = COPY %d0
     %4:_(s64) = G_FPOW %0, %1
+    %x0 = COPY %4
 
     ; CHECK: %s0 = COPY %2
     ; CHECK: %s1 = COPY %3
     ; CHECK: BL $powf, csr_aarch64_aapcs, implicit-def %lr, implicit %sp, implicit %s0, implicit %s1, implicit-def %s0
     ; CHECK: %5:_(s32) = COPY %s0
     %5:_(s32) = G_FPOW %2, %3
+    %w0 = COPY %5
 
 ...

test/CodeGen/AArch64/GlobalISel/legalize-rem.mir

+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -O0 -run-pass=legalizer -global-isel %s -o - | FileCheck %s
 
 --- |
   target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
   target triple = "aarch64--"
   define void @test_urem_64() {
   entry:
     ret void
registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
 body: |
   bb.0.entry:
     liveins: %x0, %x1, %x2, %x3
 
     ; CHECK-LABEL: name: test_urem_64
-    ; CHECK: [[QUOT:%[0-9]+]]:_(s64) = G_UDIV %0, %1
-    ; CHECK: [[PROD:%[0-9]+]]:_(s64) = G_MUL [[QUOT]], %1
-    ; CHECK: [[RES:%[0-9]+]]:_(s64) = G_SUB %0, [[PROD]]
+    ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY %x1
+    ; CHECK: [[UDIV:%[0-9]+]]:_(s64) = G_UDIV [[COPY]], [[COPY1]]
+    ; CHECK: [[MUL:%[0-9]+]]:_(s64) = G_MUL [[UDIV]], [[COPY1]]
+    ; CHECK: [[SUB:%[0-9]+]]:_(s64) = G_SUB [[COPY]], [[MUL]]
+    ; CHECK: %x0 = COPY [[SUB]](s64)
     %0(s64) = COPY %x0
     %1(s64) = COPY %x1
     %2(s64) = G_UREM %0, %1
+    %x0 = COPY %2
 
 
 ...
 ---
 name:            test_srem_32
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 3, class: _ }
   - { id: 4, class: _ }
   - { id: 5, class: _ }
 body: |
   bb.0.entry:
     liveins: %x0, %x1, %x2, %x3
-    ; CHECK-LABEL: name: test_srem_32
-    ; CHECK: [[T1:%.*]]:_(s32) = G_TRUNC %0(s64)
-    ; CHECK: [[T2:%.*]]:_(s32) = G_TRUNC %1(s64)
-    ; CHECK: [[DIV:%.*]]:_(s32) = G_SDIV [[T1]], [[T2]]
-    ; CHECK: [[MUL:%.*]]:_(s32) = G_MUL [[DIV]], [[T2]]
-    ; CHECK: [[RES:%.*]]:_(s32) = G_SUB [[T1]], [[MUL]]
 
+    ; CHECK-LABEL: name: test_srem_32
+    ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY %x1
+    ; CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: [[TRUNC1:%[0-9]+]]:_(s32) = G_TRUNC [[COPY1]](s64)
+    ; CHECK: [[SDIV:%[0-9]+]]:_(s32) = G_SDIV [[TRUNC]], [[TRUNC1]]
+    ; CHECK: [[MUL:%[0-9]+]]:_(s32) = G_MUL [[SDIV]], [[TRUNC1]]
+    ; CHECK: [[SUB:%[0-9]+]]:_(s32) = G_SUB [[TRUNC]], [[MUL]]
+    ; CHECK: %w0 = COPY [[SUB]](s32)
     %0(s64) = COPY %x0
     %1(s64) = COPY %x1
     %3(s32) = G_TRUNC %0
     %4(s32) = G_TRUNC %1
     %5(s32) = G_SREM %3, %4
+    %w0 = COPY %5
 
 ...
 ---
 name:            test_srem_8
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 6, class: _ }
   - { id: 7, class: _ }
   - { id: 8, class: _ }
 body: |
   bb.0.entry:
     liveins: %x0, %x1, %x2, %x3
-    ; CHECK-LABEL: name: test_srem_8
 
-    ; CHECK: [[C1:%.*]]:_(s32) = G_CONSTANT i32 24
-    ; CHECK: [[SRC1:%.*]]:_(s32) = G_TRUNC %0(s64)
-    ; CHECK: [[SHL1:%.*]]:_(s32) = G_SHL [[SRC1]], [[C1]]
-    ; CHECK: [[LHS_SEXT:%.*]]:_(s32) = G_ASHR [[SHL1]], [[C1]]
-    ; CHECK: [[C2:%.*]]:_(s32) = G_CONSTANT i32 24
-    ; CHECK: [[SRC2:%.*]]:_(s32) = G_TRUNC %1(s64)
-    ; CHECK: [[SHL2:%.*]]:_(s32) = G_SHL [[SRC2]], [[C2]]
-    ; CHECK: [[RHS_SEXT:%.*]]:_(s32) = G_ASHR [[SHL2]], [[C2]]
-    ; CHECK: [[SDIV:%.*]]:_(s32) = G_SDIV [[LHS_SEXT]], [[RHS_SEXT]]
-    ; CHECK: [[A:%.*]]:_(s32) = COPY [[SDIV]]
-    ; CHECK: [[SRC3:%.*]]:_(s32) = G_TRUNC %1(s64)
-    ; CHECK: [[MUL:%.*]]:_(s32) = G_MUL [[A]], [[SRC3]]
-    ; CHECK: [[SRC4:%.*]]:_(s32) = G_TRUNC %0(s64)
-    ; CHECK: [[SRC5:%.*]]:_(s32) = COPY [[MUL]]
-    ; CHECK: [[SUB:%.*]]:_(s32) = G_SUB [[SRC4]], [[SRC5]]
-    ; CHECK: [[RES:%.*]]:_(s8) = G_TRUNC [[SUB]]
 
+    ; CHECK-LABEL: name: test_srem_8
+    ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY %x1
+    ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 24
+    ; CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: [[SHL:%[0-9]+]]:_(s32) = G_SHL [[TRUNC]], [[C]]
+    ; CHECK: [[ASHR:%[0-9]+]]:_(s32) = G_ASHR [[SHL]], [[C]]
+    ; CHECK: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 24
+    ; CHECK: [[TRUNC1:%[0-9]+]]:_(s32) = G_TRUNC [[COPY1]](s64)
+    ; CHECK: [[SHL1:%[0-9]+]]:_(s32) = G_SHL [[TRUNC1]], [[C1]]
+    ; CHECK: [[ASHR1:%[0-9]+]]:_(s32) = G_ASHR [[SHL1]], [[C1]]
+    ; CHECK: [[SDIV:%[0-9]+]]:_(s32) = G_SDIV [[ASHR]], [[ASHR1]]
+    ; CHECK: [[COPY2:%[0-9]+]]:_(s32) = COPY [[SDIV]](s32)
+    ; CHECK: [[TRUNC2:%[0-9]+]]:_(s32) = G_TRUNC [[COPY1]](s64)
+    ; CHECK: [[MUL:%[0-9]+]]:_(s32) = G_MUL [[COPY2]], [[TRUNC2]]
+    ; CHECK: [[TRUNC3:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: [[COPY3:%[0-9]+]]:_(s32) = COPY [[MUL]](s32)
+    ; CHECK: [[SUB:%[0-9]+]]:_(s32) = G_SUB [[TRUNC3]], [[COPY3]]
+    ; CHECK: [[COPY4:%[0-9]+]]:_(s32) = COPY [[SUB]](s32)
+    ; CHECK: %w0 = COPY [[COPY4]](s32)
     %0(s64) = COPY %x0
     %1(s64) = COPY %x1
     %6(s8) = G_TRUNC %0
     %7(s8) = G_TRUNC %1
     %8(s8) = G_SREM %6, %7
+    %9:_(s32) = G_ANYEXT %8
+    %w0 = COPY %9
 ...
 ---
 name:            test_frem
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
   - { id: 3, class: _ }
   - { id: 4, class: _ }
   - { id: 5, class: _ }
 body: |
   bb.0.entry:
     liveins: %x0, %x1, %x2, %x3
-    ; CHECK-LABEL: name: test_frem
 
-    ; CHECK: %d0 = COPY %0
-    ; CHECK: %d1 = COPY %1
+    ; CHECK-LABEL: name: test_frem
+    ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY %x1
+    ; CHECK: ADJCALLSTACKDOWN 0, 0, implicit-def %sp, implicit %sp
+    ; CHECK: %d0 = COPY [[COPY]](s64)
+    ; CHECK: %d1 = COPY [[COPY1]](s64)
     ; CHECK: BL $fmod, csr_aarch64_aapcs, implicit-def %lr, implicit %sp, implicit %d0, implicit %d1, implicit-def %d0
-    ; CHECK: [[RES:%.*]]:_(s64) = COPY %d0
+    ; CHECK: [[COPY2:%[0-9]+]]:_(s64) = COPY %d0
+    ; CHECK: ADJCALLSTACKUP 0, 0, implicit-def %sp, implicit %sp
+    ; CHECK: %x0 = COPY [[COPY2]](s64)
+    ; CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: [[TRUNC1:%[0-9]+]]:_(s32) = G_TRUNC [[COPY1]](s64)
+    ; CHECK: ADJCALLSTACKDOWN 0, 0, implicit-def %sp, implicit %sp
+    ; CHECK: %s0 = COPY [[TRUNC]](s32)
+    ; CHECK: %s1 = COPY [[TRUNC1]](s32)
+    ; CHECK: BL $fmodf, csr_aarch64_aapcs, implicit-def %lr, implicit %sp, implicit %s0, implicit %s1, implicit-def %s0
+    ; CHECK: [[COPY3:%[0-9]+]]:_(s32) = COPY %s0
+    ; CHECK: ADJCALLSTACKUP 0, 0, implicit-def %sp, implicit %sp
+    ; CHECK: %w0 = COPY [[COPY3]](s32)
     %0(s64) = COPY %x0
     %1(s64) = COPY %x1
     %2(s64) = G_FREM %0, %1
+    %x0 = COPY %2
 
-    ; CHECK: %s0 = COPY %3
-    ; CHECK: %s1 = COPY %4
-    ; CHECK: BL $fmodf, csr_aarch64_aapcs, implicit-def %lr, implicit %sp, implicit %s0, implicit %s1, implicit-def %s0
-    ; CHECK: [[RES:%.*]]:_(s32) = COPY %s0
     %3(s32) = G_TRUNC %0
     %4(s32) = G_TRUNC %1
     %5(s32) = G_FREM %3, %4
+    %w0 = COPY %5

test/CodeGen/AArch64/GlobalISel/legalize-shift.mir

+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -O0 -run-pass=legalizer -global-isel %s -o - | FileCheck %s
 
 --- |
   target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
   target triple = "aarch64--"
   define void @test_shift() {
   entry:
     ret void
   }
 ...
 
 ---
 name:            test_shift
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
   - { id: 3, class: _ }
   - { id: 4, class: _ }
   - { id: 5, class: _ }
   - { id: 6, class: _ }
 body: |
   bb.0.entry:
     liveins: %x0, %x1, %x2, %x3
+    ; CHECK-LABEL: name: test_shift
+    ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY %x1
+    ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 24
+    ; CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: [[SHL:%[0-9]+]]:_(s32) = G_SHL [[TRUNC]], [[C]]
+    ; CHECK: [[ASHR:%[0-9]+]]:_(s32) = G_ASHR [[SHL]], [[C]]
+    ; CHECK: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 24
+    ; CHECK: [[TRUNC1:%[0-9]+]]:_(s32) = G_TRUNC [[COPY1]](s64)
+    ; CHECK: [[SHL1:%[0-9]+]]:_(s32) = G_SHL [[TRUNC1]], [[C1]]
+    ; CHECK: [[ASHR1:%[0-9]+]]:_(s32) = G_ASHR [[SHL1]], [[C1]]
+    ; CHECK: [[ASHR2:%[0-9]+]]:_(s32) = G_ASHR [[ASHR]], [[ASHR1]]
+    ; CHECK: [[COPY2:%[0-9]+]]:_(s32) = COPY [[ASHR2]](s32)
+    ; CHECK: %w0 = COPY [[COPY2]](s32)
+    ; CHECK: [[C2:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+    ; CHECK: [[TRUNC2:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: [[AND:%[0-9]+]]:_(s32) = G_AND [[TRUNC2]], [[C2]]
+    ; CHECK: [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 255
+    ; CHECK: [[TRUNC3:%[0-9]+]]:_(s32) = G_TRUNC [[COPY1]](s64)
+    ; CHECK: [[AND1:%[0-9]+]]:_(s32) = G_AND [[TRUNC3]], [[C3]]
+    ; CHECK: [[LSHR:%[0-9]+]]:_(s32) = G_LSHR [[AND]], [[AND1]]
+    ; CHECK: [[COPY3:%[0-9]+]]:_(s32) = COPY [[LSHR]](s32)
+    ; CHECK: %w0 = COPY [[COPY3]](s32)
+    ; CHECK: [[TRUNC4:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+    ; CHECK: [[TRUNC5:%[0-9]+]]:_(s32) = G_TRUNC [[COPY1]](s64)
+    ; CHECK: [[SHL2:%[0-9]+]]:_(s32) = G_SHL [[COPY1]]0, [[COPY1]]1
+    ; CHECK: [[COPY4:%[0-9]+]]:_(s32) = COPY [[COPY1]]2(s32)
+    ; CHECK: %w0 = COPY [[COPY4]](s32)
     %0(s64) = COPY %x0
     %1(s64) = COPY %x1
     %2(s8) = G_TRUNC %0
     %3(s8) = G_TRUNC %1
 
-    ; CHECK: [[C1:%.*]]:_(s32) = G_CONSTANT i32 24
-    ; CHECK: [[SRC:%.*]]:_(s32) = G_TRUNC %0(s64)
-    ; CHECK: [[SHL1:%.*]]:_(s32) = G_SHL [[SRC]], [[C1]]
-    ; CHECK: [[SEXT1:%.*]]:_(s32) = G_ASHR [[SHL1]], [[C1]]
-    ; CHECK: [[C2:%.*]]:_(s32) = G_CONSTANT i32 24
-    ; CHECK: [[SRC2:%.*]]:_(s32) = G_TRUNC %1(s64)
-    ; CHECK: [[SHL2:%.*]]:_(s32) = G_SHL [[SRC2]], [[C2]]
-    ; CHECK: [[SEXT2:%.*]]:_(s32) = G_ASHR [[SHL2]], [[C2]]
-    ; CHECK: [[RES32:%[0-9]+]]:_(s32) = G_ASHR [[SEXT1]], [[SEXT2]]
-    ; CHECK: %4:_(s8) = G_TRUNC [[RES32]]
     %4(s8) = G_ASHR %2, %3
+    %7:_(s32) = G_ANYEXT %4
+    %w0 = COPY %7
 
 
-    ; CHECK: [[C1:%.*]]:_(s32) = G_CONSTANT i32 255
-    ; CHECK: [[SRC:%.*]]:_(s32) = G_TRUNC %0(s64)
-    ; CHECK: [[ZEXT:%.*]]:_(s32) = G_AND [[SRC]], [[C1]]
-    ; CHECK: [[C2:%.*]]:_(s32) = G_CONSTANT i32 255
-    ; CHECK: [[SRC2:%.*]]:_(s32) = G_TRUNC %1(s64)
-    ; CHECK: [[ZEXT2:%.*]]:_(s32) = G_AND [[SRC2]], [[C2]]
-    ; CHECK: [[RES32:%[0-9]+]]:_(s32) = G_LSHR [[ZEXT]], [[ZEXT2]]
-    ; CHECK: %5:_(s8) = G_TRUNC [[RES32]]
     %5(s8) = G_LSHR %2, %3
+    %8:_(s32) = G_ANYEXT %5
+    %w0 = COPY %8
 
-    ; CHECK: [[OP0:%.*]]:_(s32) = G_TRUNC %0
-    ; CHECK: [[OP1:%.*]]:_(s32) = G_TRUNC %1
-    ; CHECK: [[RES32:%.*]]:_(s32) = G_SHL [[OP0]], [[OP1]]
-    ; CHECK: [[RES:%.*]]:_(s8) = G_TRUNC [[RES32]](s32)
     %6(s8) = G_SHL %2, %3
+    %9:_(s32) = G_ANYEXT %6
+    %w0 = COPY %9
 ...

test/CodeGen/AArch64/GlobalISel/legalize-simple.mir

+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -O0 -run-pass=legalizer -global-isel %s -o - | FileCheck %s
 
 --- |
   target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
   target triple = "aarch64--"
   define void @test_simple() {
   entry:
     ret void
registers:
   - { id: 10, class: _ }
   - { id: 11, class: _ }
   - { id: 12, class: _ }
   - { id: 13, class: _ }
   - { id: 14, class: _ }
   - { id: 15, class: _ }
   - { id: 16, class: _ }
 body: |
+  ; CHECK-LABEL: name: test_simple
+  ; CHECK: bb.0.entry:
+  ; CHECK:   successors: %bb.1.next(0x80000000)
+  ; CHECK:   [[COPY:%[0-9]+]]:_(s64) = COPY %x0
+  ; CHECK:   [[TRUNC:%[0-9]+]]:_(s1) = G_TRUNC [[COPY]](s64)
+  ; CHECK:   [[TRUNC1:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+  ; CHECK:   [[INTTOPTR:%[0-9]+]]:_(p0) = G_INTTOPTR [[COPY]](s64)
+  ; CHECK:   [[PTRTOINT:%[0-9]+]]:_(s64) = G_PTRTOINT [[INTTOPTR]](p0)
+  ; CHECK:   %x0 = COPY [[PTRTOINT]](s64)
+  ; CHECK:   G_BRCOND [[TRUNC]](s1), %bb.1.next
+  ; CHECK: bb.1.next:
+  ; CHECK:   [[TRUNC2:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+  ; CHECK:   [[TRUNC3:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+  ; CHECK:   [[SELECT:%[0-9]+]]:_(s32) = G_SELECT [[TRUNC]](s1), [[TRUNC2]], [[TRUNC3]]
+  ; CHECK:   [[COPY1:%[0-9]+]]:_(s32) = COPY [[SELECT]](s32)
+  ; CHECK:   %w0 = COPY [[COPY1]](s32)
+  ; CHECK:   [[TRUNC4:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+  ; CHECK:   [[TRUNC5:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+  ; CHECK:   [[SELECT1:%[0-9]+]]:_(s32) = G_SELECT [[TRUNC]](s1), [[TRUNC4]], [[TRUNC5]]
+  ; CHECK:   [[COPY2:%[0-9]+]]:_(s32) = COPY [[SELECT1]](s32)
+  ; CHECK:   %w0 = COPY [[COPY2]](s32)
+  ; CHECK:   [[TRUNC6:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+  ; CHECK:   [[TRUNC7:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
+  ; CHECK:   [[SELECT2:%[0-9]+]]:_(s32) = G_SELECT [[TRUNC]](s1), [[TRUNC6]], [[TRUNC7]]
+  ; CHECK:   [[COPY3:%[0-9]+]]:_(s32) = COPY [[SELECT2]](s32)
+  ; CHECK:   %w0 = COPY [[COPY3]](s32)
+  ; CHECK:   [[SELECT3:%[0-9]+]]:_(s32) = G_SELECT [[TRUNC]](s1), [[TRUNC1]], [[TRUNC1]]
+  ; CHECK:   [[SELECT4:%[0-9]+]]:_(s64) = G_SELECT [[TRUNC]](s1), [[COPY]], [[COPY]]
+  ; CHECK:   %x0 = COPY [[SELECT4]](s64)
+  ; CHECK:   [[BITCAST:%[0-9]+]]:_(<2 x s32>) = G_BITCAST [[COPY]](s64)
+  ; CHECK:   [[BITCAST1:%[0-9]+]]:_(s64) = G_BITCAST [[TRUNC]]2(<2 x s32>)
+  ; CHECK:   %x0 = COPY [[BITCAST1]](s64)
+  ; CHECK:   [[BITCAST2:%[0-9]+]]:_(s32) = G_BITCAST [[TRUNC]]0(s32)
+  ; CHECK:   %w0 = COPY [[TRUNC]]4(s32)
+  ; CHECK:   [[BITCAST3:%[0-9]+]]:_(<4 x s8>) = G_BITCAST [[COPY]](s64)
+  ; CHECK:   [[BITCAST4:%[0-9]+]]:_(s32) = G_BITCAST [[TRUNC]]5(<4 x s8>)
+  ; CHECK:   %w0 = COPY [[BITCAST4]](s32)
+  ; CHECK:   [[BITCAST5:%[0-9]+]]:_(<2 x s16>) = G_BITCAST [[COPY]](s64)
+  ; CHECK:   [[BITCAST6:%[0-9]+]]:_(s32) = G_BITCAST [[TRUNC]]6(<2 x s16>)
+  ; CHECK:   %w0 = COPY [[BITCAST6]](s32)
   bb.0.entry:
     liveins: %x0, %x1, %x2, %x3
     %0(s64) = COPY %x0
 
     %1(s1) = G_TRUNC %0
     %2(s8) = G_TRUNC %0
     %3(s16) = G_TRUNC %0
     %4(s32) = G_TRUNC %0
 
-    ; CHECK-LABEL: name: test_simple
-    ; CHECK: %5:_(p0) = G_INTTOPTR %0
-    ; CHECK: %6:_(s64) = G_PTRTOINT %5
     %5(p0) = G_INTTOPTR %0
     %6(s64) = G_PTRTOINT %5
+    %x0 = COPY %6
 
-    ; CHECK: G_BRCOND %1(s1), %bb.1.next
     G_BRCOND %1, %bb.1.next
 
   bb.1.next:
 
-    ; CHECK: [[LHS:%[0-9]+]]:_(s32) = G_TRUNC %0
-    ; CHECK: [[RHS:%[0-9]+]]:_(s32) = G_TRUNC %0
-    ; CHECK: [[RES:%[0-9]+]]:_(s32) = G_SELECT %1(s1), [[LHS]], [[RHS]]
-    ; CHECK: %7:_(s1) = G_TRUNC [[RES]](s32)
     %7(s1) = G_SELECT %1, %1, %1
+    %21:_(s32) = G_ANYEXT %7
+    %w0 = COPY %21
 
-    ; CHECK: [[LHS:%[0-9]+]]:_(s32) = G_TRUNC %0
-    ; CHECK: [[RHS:%[0-9]+]]:_(s32) = G_TRUNC %0
-    ; CHECK: [[RES:%[0-9]+]]:_(s32) = G_SELECT %1(s1), [[LHS]], [[RHS]]
-    ; CHECK: %8:_(s8) = G_TRUNC [[RES]](s32)
     %8(s8) = G_SELECT %1, %2, %2
+    %20:_(s32) = G_ANYEXT %8
+    %w0 = COPY %20
 
-    ; CHECK: [[LHS:%[0-9]+]]:_(s32) = G_TRUNC %0
-    ; CHECK: [[RHS:%[0-9]+]]:_(s32) = G_TRUNC %0
-    ; CHECK: [[RES:%[0-9]+]]:_(s32) = G_SELECT %1(s1), [[LHS]], [[RHS]]
-    ; CHECK: %9:_(s16) = G_TRUNC [[RES]](s32)
     %9(s16) = G_SELECT %1, %3, %3
+    %19:_(s32) = G_ANYEXT %9
+    %w0 = COPY %19
 
     %10(s32) = G_SELECT %1, %4, %4
     %11(s64) = G_SELECT %1, %0, %0
+    %x0 = COPY %11
 
-    ; CHECK: %12:_(<2 x s32>) = G_BITCAST %0
-    ; CHECK: %13:_(s64) = G_BITCAST %12
-    ; CHECK: %14:_(s32) = G_BITCAST %10
-    ; CHECK: %15:_(<4 x s8>) = G_BITCAST %0
-    ; CHECK: %16:_(<2 x s16>) = G_BITCAST %0
     %12(<2 x s32>) = G_BITCAST %0
     %13(s64) = G_BITCAST %12
+    %x0 = COPY %13
     %14(s32) = G_BITCAST %10
+    %w0 = COPY %14
     %15(<4 x s8>) = G_BITCAST %0
+    %17:_(s32) = G_BITCAST %15
+    %w0 = COPY %17
     %16(<2 x s16>) = G_BITCAST %0
+    %18:_(s32) = G_BITCAST %16
+    %w0 = COPY %18
 ...
 
 ---
 name:            bitcast128
 tracksRegLiveness: true
 registers:
   - { id: 0, class: _}
   - { id: 1, class: _}
   - { id: 2, class: _}
   - { id: 3, class: _}
 body:             |
   bb.1:
     liveins: %x0, %x1
-    ; CHECK-LABEL: bitcast128
     ; This is legal and shouldn't be changed.
-    ; CHECK: %2:_(<2 x s64>) = G_BITCAST %3(s128)
+    ; CHECK-LABEL: name: bitcast128
+    ; CHECK: liveins: %x0, %x1
+    ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY %x1
+    ; CHECK: [[MV:%[0-9]+]]:_(s128) = G_MERGE_VALUES [[COPY]](s64), [[COPY1]](s64)
+    ; CHECK: [[BITCAST:%[0-9]+]]:_(<2 x s64>) = G_BITCAST [[MV]](s128)
+    ; CHECK: %q0 = COPY [[BITCAST]](<2 x s64>)
+    ; CHECK: RET_ReallyLR implicit %q0
     %0(s64) = COPY %x0
     %1(s64) = COPY %x1
     %3(s128) = G_MERGE_VALUES %0(s64), %1(s64)
     %2(<2 x s64>) = G_BITCAST %3(s128)
     %q0 = COPY %2(<2 x s64>)
     RET_ReallyLR implicit %q0
 
 ...

test/CodeGen/AArch64/GlobalISel/legalize-sub.mir

bb.0.entry:
     liveins: %x0, %x1, %x2, %x3
 
     ; CHECK-LABEL: name: test_scalar_sub_small
     ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
     ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY %x1
     ; CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
     ; CHECK: [[TRUNC1:%[0-9]+]]:_(s32) = G_TRUNC [[COPY1]](s64)
     ; CHECK: [[SUB:%[0-9]+]]:_(s32) = G_SUB [[TRUNC]], [[TRUNC1]]
-    ; CHECK: [[TRUNC2:%[0-9]+]]:_(s8) = G_TRUNC [[SUB]](s32)
-    ; CHECK: [[ANYEXT:%[0-9]+]]:_(s64) = G_ANYEXT [[TRUNC2]](s8)
+    ; CHECK: [[ANYEXT:%[0-9]+]]:_(s64) = G_ANYEXT [[SUB]](s32)
     ; CHECK: %x0 = COPY [[ANYEXT]](s64)
     %0(s64) = COPY %x0
     %1(s64) = COPY %x1
     %2(s8) = G_TRUNC %0
     %3(s8) = G_TRUNC %1
     %4(s8) = G_SUB %2, %3
     %5(s64) = G_ANYEXT %4
     %x0 = COPY %5
 ...

test/CodeGen/AArch64/GlobalISel/legalize-undef.mir

 # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -mtriple=aarch64-linux-gnu -O0 -run-pass=legalizer -global-isel %s -o - | FileCheck %s
 
 ---
 name:            test_implicit_def
 registers:
 body: |
   bb.0.entry:
     liveins:
 
     ; CHECK-LABEL: name: test_implicit_def
     ; CHECK: [[DEF:%[0-9]+]]:_(s64) = G_IMPLICIT_DEF
     ; CHECK: [[DEF1:%[0-9]+]]:_(s64) = G_IMPLICIT_DEF
     ; CHECK: [[MV:%[0-9]+]]:_(s128) = G_MERGE_VALUES [[DEF]](s64), [[DEF1]](s64)
     %0:_(s128) = G_IMPLICIT_DEF
+    %1:_(s64) = G_TRUNC %0
+    %x0 = COPY %1
 ...

test/CodeGen/AArch64/GlobalISel/legalize-xor.mir

bb.0.entry:
     liveins: %x0, %x1, %x2, %x3
 
     ; CHECK-LABEL: name: test_scalar_xor_small
     ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %x0
     ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY %x1
     ; CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC [[COPY]](s64)
     ; CHECK: [[TRUNC1:%[0-9]+]]:_(s32) = G_TRUNC [[COPY1]](s64)
     ; CHECK: [[XOR:%[0-9]+]]:_(s32) = G_XOR [[TRUNC]], [[TRUNC1]]
-    ; CHECK: [[TRUNC2:%[0-9]+]]:_(s8) = G_TRUNC [[XOR]](s32)
-    ; CHECK: [[ANYEXT:%[0-9]+]]:_(s64) = G_ANYEXT [[TRUNC2]](s8)
+    ; CHECK: [[ANYEXT:%[0-9]+]]:_(s64) = G_ANYEXT [[XOR]](s32)
     ; CHECK: %x0 = COPY [[ANYEXT]](s64)
     %0(s64) = COPY %x0
     %1(s64) = COPY %x1
     %2(s8) = G_TRUNC %0
     %3(s8) = G_TRUNC %1
     %4(s8) = G_XOR %2, %3
     %5(s64) = G_ANYEXT %4
     %x0 = COPY %5
 ...

test/CodeGen/AMDGPU/GlobalISel/legalize-add.mir

bb.0:
 
     ; CHECK-LABEL: name: test_add
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %vgpr0
     ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY %vgpr1
     ; CHECK: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[COPY]], [[COPY1]]
     %0(s32) = COPY %vgpr0
     %1(s32) = COPY %vgpr1
     %2(s32) = G_ADD %0, %1
+    %vgpr0 = COPY %2
 ...

test/CodeGen/AMDGPU/GlobalISel/legalize-and.mir

bb.0:
 
     ; CHECK-LABEL: name: test_and
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %vgpr0
     ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY %vgpr1
     ; CHECK: [[AND:%[0-9]+]]:_(s32) = G_AND [[COPY]], [[COPY1]]
     %0(s32) = COPY %vgpr0
     %1(s32) = COPY %vgpr1
     %2(s32) = G_AND %0, %1
+    %vgpr0 = COPY %2
 ...

test/CodeGen/AMDGPU/GlobalISel/legalize-bitcast.mir

bb.0:
 
     ; CHECK-LABEL: name: test_bitcast
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %vgpr0
     ; CHECK: [[BITCAST:%[0-9]+]]:_(<2 x s16>) = G_BITCAST [[COPY]](s32)
     ; CHECK: [[BITCAST1:%[0-9]+]]:_(s32) = G_BITCAST [[BITCAST]](<2 x s16>)
     %0(s32) = COPY %vgpr0
     %1(<2 x s16>) = G_BITCAST %0
     %2(s32) = G_BITCAST %1
+    %vgpr0 = COPY %2
 ...

test/CodeGen/AMDGPU/GlobalISel/legalize-constant.mir

registers:
   - { id: 1, class: _ }
 body: |
   bb.0.entry:
 
     ; CHECK-LABEL: name: test_fconstant
     ; CHECK: [[C:%[0-9]+]]:_(s32) = G_FCONSTANT float 1.000000e+00
     ; CHECK: [[C1:%[0-9]+]]:_(s32) = G_FCONSTANT float 7.500000e+00
     %0(s32) = G_FCONSTANT float 1.0
+    %vgpr0 = COPY %0
     %1(s32) = G_FCONSTANT float 7.5
+    %vgpr0 = COPY %1
 ...

test/CodeGen/AMDGPU/GlobalISel/legalize-fmul.mir

bb.0:
 
     ; CHECK-LABEL: name: test_fmul
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %vgpr0
     ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY %vgpr1
     ; CHECK: [[FMUL:%[0-9]+]]:_(s32) = G_FMUL [[COPY]], [[COPY1]]
     %0(s32) = COPY %vgpr0
     %1(s32) = COPY %vgpr1
     %2(s32) = G_FMUL %0, %1
+    %vgpr0 = COPY %2
 ...

test/CodeGen/AMDGPU/GlobalISel/legalize-icmp.mir

bb.0.entry:
     liveins: %vgpr0
     ; CHECK-LABEL: name: test_icmp
     ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %vgpr0
     ; CHECK: [[ICMP:%[0-9]+]]:_(s1) = G_ICMP intpred(ne), [[C]](s32), [[COPY]]
     %0(s32) = G_CONSTANT i32 0
     %1(s32) = COPY %vgpr0
     %2(s1) = G_ICMP intpred(ne), %0, %1
+    %3:_(s32) = G_ANYEXT %2
+    %vgpr0 = COPY %3
 ...

test/CodeGen/AMDGPU/GlobalISel/legalize-or.mir

bb.0:
 
     ; CHECK-LABEL: name: test_or
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %vgpr0
     ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY %vgpr1
     ; CHECK: [[OR:%[0-9]+]]:_(s32) = G_OR [[COPY]], [[COPY1]]
     %0(s32) = COPY %vgpr0
     %1(s32) = COPY %vgpr1
     %2(s32) = G_OR %0, %1
+    %vgpr0 = COPY %2
 ...

test/CodeGen/AMDGPU/GlobalISel/legalize-select.mir

bb.0:
     ; CHECK: [[SELECT:%[0-9]+]]:_(s32) = G_SELECT [[ICMP]](s1), [[C1]], [[C2]]
     %0(s32) = G_CONSTANT i32 0
     %1(s32) = COPY %vgpr0
 
     %2(s1) = G_ICMP intpred(ne), %0, %1
     %3(s32) = G_CONSTANT i32 1
     %4(s32) = G_CONSTANT i32 2
     %5(s32) = G_SELECT %2, %3, %4
+    %vgpr0 = COPY %5
 
 ...

test/CodeGen/AMDGPU/GlobalISel/legalize-shl.mir

bb.0.entry:
 
     ; CHECK-LABEL: name: test_shl
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %vgpr0
     ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY %vgpr1
     ; CHECK: [[SHL:%[0-9]+]]:_(s32) = G_SHL [[COPY]], [[COPY1]]
     %0(s32) = COPY %vgpr0
     %1(s32) = COPY %vgpr1
     %2(s32) = G_SHL %0, %1
+    %vgpr0 = COPY %2
 ...

test/CodeGen/ARM/GlobalISel/arm-isel.ll

 ; CHECK: and r0, r0, #1
 ; CHECK: bx lr
 entry:
   ret i1 %x
 }
 
 define signext i1 @test_sext_i1(i1 %x) {
 ; CHECK-LABEL: test_sext_i1
-; CHECK: and r0, r0, #1
-; CHECK: rsb r0, r0, #0
+; CHECK: mov  r1, #31
+; CHECK: lsl  r0, r0, r1
+; CHECK: asr  r0, r0, r1
 ; CHECK: bx lr
 entry:
   ret i1 %x
 }
 
 define zeroext i8 @test_ext_i8(i8 %x) {
 ; CHECK-LABEL: test_ext_i8:
-; CHECK: uxtb r0, r0
+; CHECK: and r0, r0, #255
 ; CHECK: bx lr
+
 entry:
   ret i8 %x
 }
 
 define signext i16 @test_ext_i16(i16 %x) {
 ; CHECK-LABEL: test_ext_i16:
-; CHECK: sxth r0, r0
+; CHECK: mov  r1, #16
+; CHECK: lsl  r0, r0, r1
+; CHECK: asr  r0, r0, r1
 ; CHECK: bx lr
 entry:
   ret i16 %x
 }
 
 define void @test_trunc_i32_i16(i32 %v, i16 *%p) {
 ; CHECK-LABEL: test_trunc_i32_i16:
 ; The trunc doesn't result in any instructions, but we

test/CodeGen/ARM/GlobalISel/arm-legalize-divmod.mir

bb.0:
     ; SOFT-DAG: %r0 = COPY [[X32]]
     ; SOFT-DAG: %r1 = COPY [[Y32]]
     ; SOFT-AEABI: BL $__aeabi_idiv, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
     ; SOFT-AEABI: [[R32:%[0-9]+]]:_(s32) = COPY %r0
     ; SOFT-DEFAULT: BL $__divsi3, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
     ; SOFT-DEFAULT: [[R32:%[0-9]+]]:_(s32) = COPY %r0
     ; SOFT: ADJCALLSTACKUP
     ; SOFT-NOT: G_SDIV
-    ; CHECK: [[R16:%[0-9]+]]:_(s16) = G_TRUNC [[R32]]
-    ; CHECK: [[R:%[0-9]+]]:_(s32) = G_SEXT [[R16]]
+    ; CHECK: [[R:%[0-9]+]]:_(s32) = G_ASHR
     ; SOFT-NOT: G_SDIV
     %4(s16) = G_SDIV %1, %3
     ; CHECK: %r0 = COPY [[R]]
     %5(s32) = G_SEXT %4(s16)
     %r0 = COPY %5(s32)
     BX_RET 14, _, implicit %r0
 ...
 ---
bb.0:
     ; SOFT-DAG: %r0 = COPY [[X32]]
     ; SOFT-DAG: %r1 = COPY [[Y32]]
     ; SOFT-AEABI: BL $__aeabi_uidiv, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
     ; SOFT-AEABI: [[R32:%[0-9]+]]:_(s32) = COPY %r0
     ; SOFT-DEFAULT: BL $__udivsi3, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
     ; SOFT-DEFAULT: [[R32:%[0-9]+]]:_(s32) = COPY %r0
     ; SOFT: ADJCALLSTACKUP
     ; SOFT-NOT: G_UDIV
-    ; CHECK: [[R16:%[0-9]+]]:_(s16) = G_TRUNC [[R32]]
-    ; CHECK: [[R:%[0-9]+]]:_(s32) = G_ZEXT [[R16]]
+    ; CHECK: [[R:%[0-9]+]]:_(s32) = G_AND
     ; SOFT-NOT: G_UDIV
     %4(s16) = G_UDIV %1, %3
     ; CHECK: %r0 = COPY [[R]]
     %5(s32) = G_ZEXT %4(s16)
     %r0 = COPY %5(s32)
     BX_RET 14, _, implicit %r0
 ...
 ---
bb.0:
     ; SOFT-DAG: %r0 = COPY [[X32]]
     ; SOFT-DAG: %r1 = COPY [[Y32]]
     ; SOFT-AEABI: BL $__aeabi_idiv, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
     ; SOFT-AEABI: [[R32:%[0-9]+]]:_(s32) = COPY %r0
     ; SOFT-DEFAULT: BL $__divsi3, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
     ; SOFT-DEFAULT: [[R32:%[0-9]+]]:_(s32) = COPY %r0
     ; SOFT: ADJCALLSTACKUP
     ; SOFT-NOT: G_SDIV
-    ; CHECK: [[R8:%[0-9]+]]:_(s8) = G_TRUNC [[R32]]
-    ; CHECK: [[R:%[0-9]+]]:_(s32) = G_SEXT [[R8]]
+    ; CHECK: [[R:%[0-9]+]]:_(s32) = G_ASHR
     ; SOFT-NOT: G_SDIV
     %4(s8) = G_SDIV %1, %3
     ; CHECK: %r0 = COPY [[R]]
     %5(s32) = G_SEXT %4(s8)
     %r0 = COPY %5(s32)
     BX_RET 14, _, implicit %r0
 ...
 ---
bb.0:
     ; SOFT-DAG: %r0 = COPY [[X32]]
     ; SOFT-DAG: %r1 = COPY [[Y32]]
     ; SOFT-AEABI: BL $__aeabi_uidiv, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
     ; SOFT-AEABI: [[R32:%[0-9]+]]:_(s32) = COPY %r0
     ; SOFT-DEFAULT: BL $__udivsi3, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
     ; SOFT-DEFAULT: [[R32:%[0-9]+]]:_(s32) = COPY %r0
     ; SOFT: ADJCALLSTACKUP
     ; SOFT-NOT: G_UDIV
-    ; CHECK: [[R8:%[0-9]+]]:_(s8) = G_TRUNC [[R32]]
-    ; CHECK: [[R:%[0-9]+]]:_(s32) = G_ZEXT [[R8]]
+    ; CHECK: [[R:%[0-9]+]]:_(s32) = G_AND
     ; SOFT-NOT: G_UDIV
     %4(s8) = G_UDIV %1, %3
     ; CHECK: %r0 = COPY [[R]]
     %5(s32) = G_ZEXT %4(s8)
     %r0 = COPY %5(s32)
     BX_RET 14, _, implicit %r0
 ...
 ---
bb.0:
     ; SOFT-DAG: %r0 = COPY [[X32]]
     ; SOFT-DAG: %r1 = COPY [[Y32]]
     ; SOFT-AEABI: BL $__aeabi_idivmod, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
     ; SOFT-AEABI: [[R32:%[0-9]+]]:_(s32) = COPY %r1
     ; SOFT-DEFAULT: BL $__modsi3, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
     ; SOFT-DEFAULT: [[R32:%[0-9]+]]:_(s32) = COPY %r0
     ; SOFT: ADJCALLSTACKUP
     ; SOFT-NOT: G_SREM
-    ; CHECK: [[R16:%[0-9]+]]:_(s16) = G_TRUNC [[R32]]
-    ; CHECK: [[R:%[0-9]+]]:_(s32) = G_SEXT [[R16]]
+    ; CHECK: [[R:%[0-9]+]]:_(s32) = G_ASHR
     ; SOFT-NOT: G_SREM
     %4(s16) = G_SREM %1, %3
     ; CHECK: %r0 = COPY [[R]]
     %5(s32) = G_SEXT %4(s16)
     %r0 = COPY %5(s32)
     BX_RET 14, _, implicit %r0
 ...
 ---
bb.0:
     ; SOFT-DAG: %r0 = COPY [[X32]]
     ; SOFT-DAG: %r1 = COPY [[Y32]]
     ; SOFT-AEABI: BL $__aeabi_uidivmod, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
     ; SOFT-AEABI: [[R32:%[0-9]+]]:_(s32) = COPY %r1
     ; SOFT-DEFAULT: BL $__umodsi3, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
     ; SOFT-DEFAULT: [[R32:%[0-9]+]]:_(s32) = COPY %r0
     ; SOFT: ADJCALLSTACKUP
     ; SOFT-NOT: G_UREM
-    ; CHECK: [[R16:%[0-9]+]]:_(s16) = G_TRUNC [[R32]]
-    ; CHECK: [[R:%[0-9]+]]:_(s32) = G_ZEXT [[R16]]
+    ; CHECK: [[R:%[0-9]+]]:_(s32) = G_AND
     ; SOFT-NOT: G_UREM
     %4(s16) = G_UREM %1, %3
     ; CHECK: %r0 = COPY [[R]]
     %5(s32) = G_ZEXT %4(s16)
     %r0 = COPY %5(s32)
     BX_RET 14, _, implicit %r0
 ...
 ---
bb.0:
     ; SOFT-DAG: %r0 = COPY [[X32]]
     ; SOFT-DAG: %r1 = COPY [[Y32]]
     ; SOFT-AEABI: BL $__aeabi_idivmod, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
     ; SOFT-AEABI: [[R32:%[0-9]+]]:_(s32) = COPY %r1
     ; SOFT-DEFAULT: BL $__modsi3, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
     ; SOFT-DEFAULT: [[R32:%[0-9]+]]:_(s32) = COPY %r0
     ; SOFT: ADJCALLSTACKUP
     ; SOFT-NOT: G_SREM
-    ; CHECK: [[R8:%[0-9]+]]:_(s8) = G_TRUNC [[R32]]
-    ; CHECK: [[R:%[0-9]+]]:_(s32) = G_SEXT [[R8]]
+    ; CHECK: [[R:%[0-9]+]]:_(s32) = G_ASHR
     ; SOFT-NOT: G_SREM
     %4(s8) = G_SREM %1, %3
     ; CHECK: %r0 = COPY [[R]]
     %5(s32) = G_SEXT %4(s8)
     %r0 = COPY %5(s32)
     BX_RET 14, _, implicit %r0
 ...
 ---
bb.0:
     ; SOFT-DAG: %r0 = COPY [[X32]]
     ; SOFT-DAG: %r1 = COPY [[Y32]]
     ; SOFT-AEABI: BL $__aeabi_uidivmod, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
     ; SOFT-AEABI: [[R32:%[0-9]+]]:_(s32) = COPY %r1
     ; SOFT-DEFAULT: BL $__umodsi3, {{.*}}, implicit %r0, implicit %r1, implicit-def %r0
     ; SOFT-DEFAULT: [[R32:%[0-9]+]]:_(s32) = COPY %r0
     ; SOFT: ADJCALLSTACKUP
     ; SOFT-NOT: G_UREM
-    ; CHECK: [[R8:%[0-9]+]]:_(s8) = G_TRUNC [[R32]]
-    ; CHECK: [[R:%[0-9]+]]:_(s32) = G_ZEXT [[R8]]
+    ; CHECK: [[R:%[0-9]+]]:_(s32) = G_AND
     ; SOFT-NOT: G_UREM
     %4(s8) = G_UREM %1, %3
     ; CHECK: %r0 = COPY [[R]]
     %5(s32) = G_ZEXT %4(s8)
     %r0 = COPY %5(s32)
     BX_RET 14, _, implicit %r0
 ...

test/CodeGen/X86/GlobalISel/add-scalar.ll

 ; X64:       # BB#0:
 ; X64-NEXT:    # kill: %EDI<def> %EDI<kill> %RDI<def>
 ; X64-NEXT:    # kill: %ESI<def> %ESI<kill> %RSI<def>
 ; X64-NEXT:    leal (%rsi,%rdi), %eax
 ; X64-NEXT:    retq
 ;
 ; X32-LABEL: test_add_i32:
 ; X32:       # BB#0:
-; X32-NEXT:    movl 8(%esp), %eax
-; X32-NEXT:    addl 4(%esp), %eax
+; X32-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X32-NEXT:    addl {{[0-9]+}}(%esp), %eax
 ; X32-NEXT:    retl
   %ret = add i32 %arg1, %arg2
   ret i32 %ret
 }
 
 define i16 @test_add_i16(i16 %arg1, i16 %arg2) {
 ; X64-LABEL: test_add_i16:
 ; X64:       # BB#0:
 ; X64-NEXT:    # kill: %EDI<def> %EDI<kill> %RDI<def>
 ; X64-NEXT:    # kill: %ESI<def> %ESI<kill> %RSI<def>
 ; X64-NEXT:    leal (%rsi,%rdi), %eax
 ; X64-NEXT:    # kill: %AX<def> %AX<kill> %EAX<kill>
 ; X64-NEXT:    retq
 ;
 ; X32-LABEL: test_add_i16:
 ; X32:       # BB#0:
-; X32-NEXT:    movzwl 8(%esp), %eax
-; X32-NEXT:    addw 4(%esp), %ax
+; X32-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
+; X32-NEXT:    addw {{[0-9]+}}(%esp), %ax
 ; X32-NEXT:    retl
   %ret = add i16 %arg1, %arg2
   ret i16 %ret
 }
 
 define i8 @test_add_i8(i8 %arg1, i8 %arg2) {
 ; X64-LABEL: test_add_i8:
 ; X64:       # BB#0:
 ; X64-NEXT:    addb %dil, %sil
 ; X64-NEXT:    movl %esi, %eax
 ; X64-NEXT:    retq
 ;
 ; X32-LABEL: test_add_i8:
 ; X32:       # BB#0:
-; X32-NEXT:    movb 8(%esp), %al
-; X32-NEXT:    addb 4(%esp), %al
+; X32-NEXT:    movb {{[0-9]+}}(%esp), %al
+; X32-NEXT:    addb {{[0-9]+}}(%esp), %al
 ; X32-NEXT:    retl
   %ret = add i8 %arg1, %arg2
   ret i8 %ret
 }
 
 define i32 @test_add_i1(i32 %arg1, i32 %arg2) {
 ; X64-LABEL: test_add_i1:
 ; X64:       # BB#0:
 ; X64-NEXT:    cmpl %esi, %edi
 ; X64-NEXT:    sete %al
 ; X64-NEXT:    addb %al, %al
+; X64-NEXT:    movzbl %al, %eax
 ; X64-NEXT:    andl $1, %eax
 ; X64-NEXT:    retq
 ;
 ; X32-LABEL: test_add_i1:
 ; X32:       # BB#0:
-; X32-NEXT:    movl 8(%esp), %eax
-; X32-NEXT:    cmpl %eax, 4(%esp)
+; X32-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X32-NEXT:    cmpl %eax, {{[0-9]+}}(%esp)
 ; X32-NEXT:    sete %al
 ; X32-NEXT:    addb %al, %al
+; X32-NEXT:    movzbl %al, %eax
 ; X32-NEXT:    andl $1, %eax
 ; X32-NEXT:    retl
   %c = icmp eq i32 %arg1, %arg2
   %x = add i1 %c , %c
   %ret = zext i1 %x to i32
   ret i32 %ret
 }

test/CodeGen/X86/GlobalISel/and-scalar.ll

 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
 ; RUN: llc -mtriple=x86_64-linux-gnu -global-isel -verify-machineinstrs < %s -o - | FileCheck %s --check-prefix=ALL
 
 define i32 @test_and_i1(i32 %arg1, i32 %arg2) {
 ; ALL-LABEL: test_and_i1:
 ; ALL:       # BB#0:
 ; ALL-NEXT:    cmpl %esi, %edi
 ; ALL-NEXT:    sete %al
 ; ALL-NEXT:    andb %al, %al
+; ALL-NEXT:    movzbl %al, %eax
 ; ALL-NEXT:    andl $1, %eax
 ; ALL-NEXT:    retq
   %c = icmp eq i32 %arg1, %arg2
   %x = and i1 %c , %c
   %ret = zext i1 %x to i32
   ret i32 %ret
 }
 

test/CodeGen/X86/GlobalISel/ext.ll

 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
 ; RUN: llc -mtriple=x86_64-linux-gnu    -global-isel -verify-machineinstrs < %s -o - | FileCheck %s --check-prefix=X64
 ; RUN: llc -mtriple=i386-linux-gnu      -global-isel -verify-machineinstrs < %s -o - | FileCheck %s --check-prefix=X32
 
 define i8 @test_zext_i1toi8(i32 %a) {
 ; X64-LABEL: test_zext_i1toi8:
 ; X64:       # BB#0:
 ; X64-NEXT:    andb $1, %dil
 ; X64-NEXT:    movl %edi, %eax
 ; X64-NEXT:    retq
 ;
 ; X32-LABEL: test_zext_i1toi8:
 ; X32:       # BB#0:
-; X32-NEXT:    movl 4(%esp), %eax
+; X32-NEXT:    movl {{[0-9]+}}(%esp), %eax
 ; X32-NEXT:    andb $1, %al
 ; X32-NEXT:    # kill: %AL<def> %AL<kill> %EAX<kill>
 ; X32-NEXT:    retl
   %val = trunc i32 %a to i1
   %r = zext i1 %val to i8
   ret i8 %r
 }
 
 define i16 @test_zext_i1toi16(i32 %a) {
 ; X64-LABEL: test_zext_i1toi16:
 ; X64:       # BB#0:
 ; X64-NEXT:    andw $1, %di
 ; X64-NEXT:    movl %edi, %eax
 ; X64-NEXT:    retq
 ;
 ; X32-LABEL: test_zext_i1toi16:
 ; X32:       # BB#0:
-; X32-NEXT:    movl 4(%esp), %eax
+; X32-NEXT:    movl {{[0-9]+}}(%esp), %eax
 ; X32-NEXT:    andw $1, %ax
 ; X32-NEXT:    # kill: %AX<def> %AX<kill> %EAX<kill>
 ; X32-NEXT:    retl
   %val = trunc i32 %a to i1
   %r = zext i1 %val to i16
   ret i16 %r
 }
 
 define i32 @test_zext_i1(i32 %a) {
 ; X64-LABEL: test_zext_i1:
 ; X64:       # BB#0:
 ; X64-NEXT:    andl $1, %edi
 ; X64-NEXT:    movl %edi, %eax
 ; X64-NEXT:    retq
 ;
 ; X32-LABEL: test_zext_i1:
 ; X32:       # BB#0:
-; X32-NEXT:    movl 4(%esp), %eax
+; X32-NEXT:    movl {{[0-9]+}}(%esp), %eax
 ; X32-NEXT:    andl $1, %eax
 ; X32-NEXT:    retl
   %val = trunc i32 %a to i1
   %r = zext i1 %val to i32
   ret i32 %r
 }
 
 define i32 @test_zext_i8(i8 %val) {
 ; X64-LABEL: test_zext_i8:
 ; X64:       # BB#0:
-; X64-NEXT:    movzbl %dil, %eax
+; X64-NEXT:    andl $255, %edi
+; X64-NEXT:    movl %edi, %eax
 ; X64-NEXT:    retq
 ;
 ; X32-LABEL: test_zext_i8:
 ; X32:       # BB#0:
-; X32-NEXT:    movzbl 4(%esp), %eax
+; X32-NEXT:    movzbl {{[0-9]+}}(%esp), %eax
 ; X32-NEXT:    retl
   %r = zext i8 %val to i32
   ret i32 %r
 }
 
 define i32 @test_zext_i16(i16 %val) {
 ; X64-LABEL: test_zext_i16:
 ; X64:       # BB#0:
-; X64-NEXT:    movzwl %di, %eax
+; X64-NEXT:    andl $65535, %edi # imm = 0xFFFF
+; X64-NEXT:    movl %edi, %eax
 ; X64-NEXT:    retq
 ;
 ; X32-LABEL: test_zext_i16:
 ; X32:       # BB#0:
-; X32-NEXT:    movzwl 4(%esp), %eax
+; X32-NEXT:    movzwl {{[0-9]+}}(%esp), %eax
 ; X32-NEXT:    retl
   %r = zext i16 %val to i32
   ret i32 %r
 }
 
 define i32 @test_sext_i8(i8 %val) {
 ; X64-LABEL: test_sext_i8:
 ; X64:       # BB#0:
 ; X64-NEXT:    movsbl %dil, %eax
 ; X64-NEXT:    retq
 ;
 ; X32-LABEL: test_sext_i8:
 ; X32:       # BB#0:
-; X32-NEXT:    movsbl 4(%esp), %eax
+; X32-NEXT:    movsbl {{[0-9]+}}(%esp), %eax
 ; X32-NEXT:    retl
   %r = sext i8 %val to i32
   ret i32 %r
 }
 
 define i32 @test_sext_i16(i16 %val) {
 ; X64-LABEL: test_sext_i16:
 ; X64:       # BB#0:
 ; X64-NEXT:    movswl %di, %eax
 ; X64-NEXT:    retq
 ;
 ; X32-LABEL: test_sext_i16:
 ; X32:       # BB#0:
-; X32-NEXT:    movswl 4(%esp), %eax
+; X32-NEXT:    movswl {{[0-9]+}}(%esp), %eax
 ; X32-NEXT:    retl
   %r = sext i16 %val to i32
   ret i32 %r
 }
 

test/CodeGen/X86/GlobalISel/legalize-add-v128.mir

 body:             |
   bb.1 (%ir-block.0):
     liveins: %xmm0, %xmm1
 
     ; ALL-LABEL: name: test_add_v16i8
     ; ALL: [[DEF:%[0-9]+]]:_(<16 x s8>) = IMPLICIT_DEF
     ; ALL: [[DEF1:%[0-9]+]]:_(<16 x s8>) = IMPLICIT_DEF
     ; ALL: [[ADD:%[0-9]+]]:_(<16 x s8>) = G_ADD [[DEF]], [[DEF1]]
+    ; ALL: %xmm0 = COPY [[ADD]](<16 x s8>)
     ; ALL: RET 0
     %0(<16 x s8>) = IMPLICIT_DEF
     %1(<16 x s8>) = IMPLICIT_DEF
     %2(<16 x s8>) = G_ADD %0, %1
+    %xmm0 = COPY %2
     RET 0
 
 ...
 ---
 name:            test_add_v8i16
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
 body:             |
   bb.1 (%ir-block.0):
     liveins: %xmm0, %xmm1
 
     ; ALL-LABEL: name: test_add_v8i16
     ; ALL: [[DEF:%[0-9]+]]:_(<8 x s16>) = IMPLICIT_DEF
     ; ALL: [[DEF1:%[0-9]+]]:_(<8 x s16>) = IMPLICIT_DEF
     ; ALL: [[ADD:%[0-9]+]]:_(<8 x s16>) = G_ADD [[DEF]], [[DEF1]]
+    ; ALL: %xmm0 = COPY [[ADD]](<8 x s16>)
     ; ALL: RET 0
     %0(<8 x s16>) = IMPLICIT_DEF
     %1(<8 x s16>) = IMPLICIT_DEF
     %2(<8 x s16>) = G_ADD %0, %1
+    %xmm0 = COPY %2
     RET 0
 
 ...
 ---
 name:            test_add_v4i32
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
 body:             |
   bb.1 (%ir-block.0):
     liveins: %xmm0, %xmm1
 
     ; ALL-LABEL: name: test_add_v4i32
     ; ALL: [[DEF:%[0-9]+]]:_(<4 x s32>) = IMPLICIT_DEF
     ; ALL: [[DEF1:%[0-9]+]]:_(<4 x s32>) = IMPLICIT_DEF
     ; ALL: [[ADD:%[0-9]+]]:_(<4 x s32>) = G_ADD [[DEF]], [[DEF1]]
+    ; ALL: %xmm0 = COPY [[ADD]](<4 x s32>)
     ; ALL: RET 0
     %0(<4 x s32>) = IMPLICIT_DEF
     %1(<4 x s32>) = IMPLICIT_DEF
     %2(<4 x s32>) = G_ADD %0, %1
+    %xmm0 = COPY %2
     RET 0
 
 ...
 ---
 name:            test_add_v2i64
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
 body:             |
   bb.1 (%ir-block.0):
     liveins: %xmm0, %xmm1
 
     ; ALL-LABEL: name: test_add_v2i64
     ; ALL: [[DEF:%[0-9]+]]:_(<2 x s64>) = IMPLICIT_DEF
     ; ALL: [[DEF1:%[0-9]+]]:_(<2 x s64>) = IMPLICIT_DEF
     ; ALL: [[ADD:%[0-9]+]]:_(<2 x s64>) = G_ADD [[DEF]], [[DEF1]]
+    ; ALL: %xmm0 = COPY [[ADD]](<2 x s64>)
     ; ALL: RET 0
     %0(<2 x s64>) = IMPLICIT_DEF
     %1(<2 x s64>) = IMPLICIT_DEF
     %2(<2 x s64>) = G_ADD %0, %1
+    %xmm0 = COPY %2
     RET 0
 
 ...

test/CodeGen/X86/GlobalISel/legalize-add-v256.mir

+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -mtriple=x86_64-linux-gnu -mattr=+sse2 -global-isel -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=NOT_AVX2 --check-prefix=SSE2
 # RUN: llc -mtriple=x86_64-linux-gnu -mattr=+avx  -global-isel -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=NOT_AVX2 --check-prefix=AVX1
 # RUN: llc -mtriple=x86_64-linux-gnu -mattr=+avx2 -global-isel -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=AVX2
 
 --- |
   define void @test_add_v32i8() {
     %ret = add <32 x i8> undef, undef
     ret void
--- |
   define void @test_add_v4i64() {
     %ret = add <4 x i64> undef, undef
     ret void
   }
 
 ...
 ---
 name:            test_add_v32i8
-# ALL-LABEL: name:  test_add_v32i8
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
-# NOT_AVX2:          %0:_(<32 x s8>) = IMPLICIT_DEF
-# NOT_AVX2-NEXT:     %1:_(<32 x s8>) = IMPLICIT_DEF
-# NOT_AVX2-NEXT:     %3:_(<16 x s8>), %4:_(<16 x s8>) = G_UNMERGE_VALUES %0(<32 x s8>)
-# NOT_AVX2-NEXT:     %5:_(<16 x s8>), %6:_(<16 x s8>) = G_UNMERGE_VALUES %1(<32 x s8>)
-# NOT_AVX2-NEXT:     %7:_(<16 x s8>) = G_ADD %3, %5
-# NOT_AVX2-NEXT:     %8:_(<16 x s8>) = G_ADD %4, %6
-# NOT_AVX2-NEXT:     %2:_(<32 x s8>) = G_MERGE_VALUES %7(<16 x s8>), %8(<16 x s8>)
-# NOT_AVX2-NEXT:     RET 0
-#
-# AVX2:              %0:_(<32 x s8>) = IMPLICIT_DEF
-# AVX2-NEXT:         %1:_(<32 x s8>) = IMPLICIT_DEF
-# AVX2-NEXT:         %2:_(<32 x s8>) = G_ADD %0, %1
-# AVX2-NEXT:         RET 0
 body:             |
   bb.1 (%ir-block.0):
     liveins: %ymm0, %ymm1
 
+    ; CHECK-LABEL: name: test_add_v32i8
+    ; ALL: [[DEF:%[0-9]+]]:_(<32 x s8>) = IMPLICIT_DEF
+    ; ALL: [[DEF1:%[0-9]+]]:_(<32 x s8>) = IMPLICIT_DEF
+    ; SSE2: [[UV:%[0-9]+]]:_(<16 x s8>), [[UV1:%[0-9]+]]:_(<16 x s8>) = G_UNMERGE_VALUES [[DEF]](<32 x s8>)
+    ; SSE2: [[UV2:%[0-9]+]]:_(<16 x s8>), [[UV3:%[0-9]+]]:_(<16 x s8>) = G_UNMERGE_VALUES [[DEF1]](<32 x s8>)
+    ; AVX1: [[UV:%[0-9]+]]:_(<16 x s8>), [[UV1:%[0-9]+]]:_(<16 x s8>) = G_UNMERGE_VALUES [[DEF]](<32 x s8>)
+    ; AVX1: [[UV2:%[0-9]+]]:_(<16 x s8>), [[UV3:%[0-9]+]]:_(<16 x s8>) = G_UNMERGE_VALUES [[DEF1]](<32 x s8>)
+    ; SSE2: [[ADD:%[0-9]+]]:_(<16 x s8>) = G_ADD [[UV]], [[UV2]]
+    ; SSE2: [[ADD1:%[0-9]+]]:_(<16 x s8>) = G_ADD [[UV1]], [[UV3]]
+    ; AVX1: [[ADD:%[0-9]+]]:_(<16 x s8>) = G_ADD [[UV]], [[UV2]]
+    ; AVX1: [[ADD1:%[0-9]+]]:_(<16 x s8>) = G_ADD [[UV1]], [[UV3]]
+    ; SSE2: [[MV:%[0-9]+]]:_(<32 x s8>) = G_MERGE_VALUES [[ADD]](<16 x s8>), [[ADD1]](<16 x s8>)
+    ; AVX1: [[MV:%[0-9]+]]:_(<32 x s8>) = G_MERGE_VALUES [[ADD]](<16 x s8>), [[ADD1]](<16 x s8>)
+    ; SSE2: %ymm0 = COPY [[MV]](<32 x s8>)
+    ; AVX1: %ymm0 = COPY [[MV]](<32 x s8>)
+    ; AVX2: [[ADD:%[0-9]+]]:_(<32 x s8>) = G_ADD [[DEF]], [[DEF1]]
+    ; AVX2: %ymm0 = COPY [[ADD]](<32 x s8>)
+    ; ALL: RET 0
     %0(<32 x s8>) = IMPLICIT_DEF
     %1(<32 x s8>) = IMPLICIT_DEF
     %2(<32 x s8>) = G_ADD %0, %1
+    %ymm0 = COPY %2
     RET 0
 
 ...
 ---
 name:            test_add_v16i16
-# ALL-LABEL: name:  test_add_v16i16
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
-# NOT_AVX2:          %0:_(<16 x s16>) = IMPLICIT_DEF
-# NOT_AVX2-NEXT:     %1:_(<16 x s16>) = IMPLICIT_DEF
-# NOT_AVX2-NEXT:     %3:_(<8 x s16>), %4:_(<8 x s16>) = G_UNMERGE_VALUES %0(<16 x s16>)
-# NOT_AVX2-NEXT:     %5:_(<8 x s16>), %6:_(<8 x s16>) = G_UNMERGE_VALUES %1(<16 x s16>)
-# NOT_AVX2-NEXT:     %7:_(<8 x s16>) = G_ADD %3, %5
-# NOT_AVX2-NEXT:     %8:_(<8 x s16>) = G_ADD %4, %6
-# NOT_AVX2-NEXT:     %2:_(<16 x s16>) = G_MERGE_VALUES %7(<8 x s16>), %8(<8 x s16>)
-# NOT_AVX2-NEXT:     RET 0
-#
-# AVX2:              %0:_(<16 x s16>) = IMPLICIT_DEF
-# AVX2-NEXT:         %1:_(<16 x s16>) = IMPLICIT_DEF
-# AVX2-NEXT:         %2:_(<16 x s16>) = G_ADD %0, %1
-# AVX2-NEXT:         RET 0
 body:             |
   bb.1 (%ir-block.0):
     liveins: %ymm0, %ymm1
 
+    ; ALL-LABEL: name: test_add_v16i16
+    ; ALL: [[DEF:%[0-9]+]]:_(<16 x s16>) = IMPLICIT_DEF
+    ; ALL: [[DEF1:%[0-9]+]]:_(<16 x s16>) = IMPLICIT_DEF
+    ; SSE2: [[UV:%[0-9]+]]:_(<8 x s16>), [[UV1:%[0-9]+]]:_(<8 x s16>) = G_UNMERGE_VALUES [[DEF]](<16 x s16>)
+    ; SSE2: [[UV2:%[0-9]+]]:_(<8 x s16>), [[UV3:%[0-9]+]]:_(<8 x s16>) = G_UNMERGE_VALUES [[DEF1]](<16 x s16>)
+    ; SSE2: [[ADD:%[0-9]+]]:_(<8 x s16>) = G_ADD [[UV]], [[UV2]]
+    ; SSE2: [[ADD1:%[0-9]+]]:_(<8 x s16>) = G_ADD [[UV1]], [[UV3]]
+    ; SSE2: [[MV:%[0-9]+]]:_(<16 x s16>) = G_MERGE_VALUES [[ADD]](<8 x s16>), [[ADD1]](<8 x s16>)
+    ; AVX1: [[UV:%[0-9]+]]:_(<8 x s16>), [[UV1:%[0-9]+]]:_(<8 x s16>) = G_UNMERGE_VALUES [[DEF]](<16 x s16>)
+    ; AVX1: [[UV2:%[0-9]+]]:_(<8 x s16>), [[UV3:%[0-9]+]]:_(<8 x s16>) = G_UNMERGE_VALUES [[DEF1]](<16 x s16>)
+    ; AVX1: [[ADD:%[0-9]+]]:_(<8 x s16>) = G_ADD [[UV]], [[UV2]]
+    ; AVX1: [[ADD1:%[0-9]+]]:_(<8 x s16>) = G_ADD [[UV1]], [[UV3]]
+    ; AVX1: [[MV:%[0-9]+]]:_(<16 x s16>) = G_MERGE_VALUES [[ADD]](<8 x s16>), [[ADD1]](<8 x s16>)
+    ; SSE2: %ymm0 = COPY [[MV]](<16 x s16>)
+    ; AVX1: %ymm0 = COPY [[MV]](<16 x s16>)
+    ; AVX2: [[ADD:%[0-9]+]]:_(<16 x s16>) = G_ADD [[DEF]], [[DEF1]]
+    ; AVX2: %ymm0 = COPY [[ADD]](<16 x s16>)
+    ; ALL: RET 0
     %0(<16 x s16>) = IMPLICIT_DEF
     %1(<16 x s16>) = IMPLICIT_DEF
     %2(<16 x s16>) = G_ADD %0, %1
+    %ymm0 = COPY %2
     RET 0
 
 ...
 ---
 name:            test_add_v8i32
-# ALL-LABEL: name:  test_add_v8i32
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
-# NOT_AVX2:          %0:_(<8 x s32>) = IMPLICIT_DEF
-# NOT_AVX2-NEXT:     %1:_(<8 x s32>) = IMPLICIT_DEF
-# NOT_AVX2-NEXT:     %3:_(<4 x s32>), %4:_(<4 x s32>) = G_UNMERGE_VALUES %0(<8 x s32>)
-# NOT_AVX2-NEXT:     %5:_(<4 x s32>), %6:_(<4 x s32>) = G_UNMERGE_VALUES %1(<8 x s32>)
-# NOT_AVX2-NEXT:     %7:_(<4 x s32>) = G_ADD %3, %5
-# NOT_AVX2-NEXT:     %8:_(<4 x s32>) = G_ADD %4, %6
-# NOT_AVX2-NEXT:     %2:_(<8 x s32>) = G_MERGE_VALUES %7(<4 x s32>), %8(<4 x s32>)
-# NOT_AVX2-NEXT:     RET 0
-#
-# AVX2:              %0:_(<8 x s32>) = IMPLICIT_DEF
-# AVX2-NEXT:         %1:_(<8 x s32>) = IMPLICIT_DEF
-# AVX2-NEXT:         %2:_(<8 x s32>) = G_ADD %0, %1
-# AVX2-NEXT:         RET 0
 body:             |
   bb.1 (%ir-block.0):
     liveins: %ymm0, %ymm1
 
+    ; ALL-LABEL: name: test_add_v8i32
+    ; ALL: [[DEF:%[0-9]+]]:_(<8 x s32>) = IMPLICIT_DEF
+    ; ALL: [[DEF1:%[0-9]+]]:_(<8 x s32>) = IMPLICIT_DEF
+    ; SSE2: [[UV:%[0-9]+]]:_(<4 x s32>), [[UV1:%[0-9]+]]:_(<4 x s32>) = G_UNMERGE_VALUES [[DEF]](<8 x s32>)
+    ; SSE2: [[UV2:%[0-9]+]]:_(<4 x s32>), [[UV3:%[0-9]+]]:_(<4 x s32>) = G_UNMERGE_VALUES [[DEF1]](<8 x s32>)
+    ; SSE2: [[ADD:%[0-9]+]]:_(<4 x s32>) = G_ADD [[UV]], [[UV2]]
+    ; SSE2: [[ADD1:%[0-9]+]]:_(<4 x s32>) = G_ADD [[UV1]], [[UV3]]
+    ; SSE2: [[MV:%[0-9]+]]:_(<8 x s32>) = G_MERGE_VALUES [[ADD]](<4 x s32>), [[ADD1]](<4 x s32>)
+    ; SSE2: %ymm0 = COPY [[MV]](<8 x s32>)
+    ; AVX1: [[UV:%[0-9]+]]:_(<4 x s32>), [[UV1:%[0-9]+]]:_(<4 x s32>) = G_UNMERGE_VALUES [[DEF]](<8 x s32>)
+    ; AVX1: [[UV2:%[0-9]+]]:_(<4 x s32>), [[UV3:%[0-9]+]]:_(<4 x s32>) = G_UNMERGE_VALUES [[DEF1]](<8 x s32>)
+    ; AVX1: [[ADD:%[0-9]+]]:_(<4 x s32>) = G_ADD [[UV]], [[UV2]]
+    ; AVX1: [[ADD1:%[0-9]+]]:_(<4 x s32>) = G_ADD [[UV1]], [[UV3]]
+    ; AVX1: [[MV:%[0-9]+]]:_(<8 x s32>) = G_MERGE_VALUES [[ADD]](<4 x s32>), [[ADD1]](<4 x s32>)
+    ; AVX1: %ymm0 = COPY [[MV]](<8 x s32>)
+    ; AVX2: [[ADD:%[0-9]+]]:_(<8 x s32>) = G_ADD [[DEF]], [[DEF1]]
+    ; AVX2: %ymm0 = COPY [[ADD]](<8 x s32>)
+    ; ALL: RET 0
     %0(<8 x s32>) = IMPLICIT_DEF
     %1(<8 x s32>) = IMPLICIT_DEF
     %2(<8 x s32>) = G_ADD %0, %1
+    %ymm0 = COPY %2
     RET 0
 
 ...
 ---
 name:            test_add_v4i64
-# ALL-LABEL: name:  test_add_v4i64
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
-# NOT_AVX2:          %0:_(<4 x s64>) = IMPLICIT_DEF
-# NOT_AVX2-NEXT:     %1:_(<4 x s64>) = IMPLICIT_DEF
-# NOT_AVX2-NEXT:     %3:_(<2 x s64>), %4:_(<2 x s64>) = G_UNMERGE_VALUES %0(<4 x s64>)
-# NOT_AVX2-NEXT:     %5:_(<2 x s64>), %6:_(<2 x s64>) = G_UNMERGE_VALUES %1(<4 x s64>)
-# NOT_AVX2-NEXT:     %7:_(<2 x s64>) = G_ADD %3, %5
-# NOT_AVX2-NEXT:     %8:_(<2 x s64>) = G_ADD %4, %6
-# NOT_AVX2-NEXT:     %2:_(<4 x s64>) = G_MERGE_VALUES %7(<2 x s64>), %8(<2 x s64>)
-# NOT_AVX2-NEXT:     RET 0
-#
-# AVX2:              %0:_(<4 x s64>) = IMPLICIT_DEF
-# AVX2-NEXT:         %1:_(<4 x s64>) = IMPLICIT_DEF
-# AVX2-NEXT:         %2:_(<4 x s64>) = G_ADD %0, %1
-# AVX2-NEXT:         RET 0
 body:             |
   bb.1 (%ir-block.0):
     liveins: %ymm0, %ymm1
 
+    ; ALL-LABEL: name: test_add_v4i64
+    ; ALL: [[DEF:%[0-9]+]]:_(<4 x s64>) = IMPLICIT_DEF
+    ; ALL: [[DEF1:%[0-9]+]]:_(<4 x s64>) = IMPLICIT_DEF
+    ; SSE2: [[UV:%[0-9]+]]:_(<2 x s64>), [[UV1:%[0-9]+]]:_(<2 x s64>) = G_UNMERGE_VALUES [[DEF]](<4 x s64>)
+    ; SSE2: [[UV2:%[0-9]+]]:_(<2 x s64>), [[UV3:%[0-9]+]]:_(<2 x s64>) = G_UNMERGE_VALUES [[DEF1]](<4 x s64>)
+    ; SSE2: [[ADD:%[0-9]+]]:_(<2 x s64>) = G_ADD [[UV]], [[UV2]]
+    ; SSE2: [[ADD1:%[0-9]+]]:_(<2 x s64>) = G_ADD [[UV1]], [[UV3]]
+    ; SSE2: [[MV:%[0-9]+]]:_(<4 x s64>) = G_MERGE_VALUES [[ADD]](<2 x s64>), [[ADD1]](<2 x s64>)
+    ; AVX1: [[UV:%[0-9]+]]:_(<2 x s64>), [[UV1:%[0-9]+]]:_(<2 x s64>) = G_UNMERGE_VALUES [[DEF]](<4 x s64>)
+    ; AVX1: [[UV2:%[0-9]+]]:_(<2 x s64>), [[UV3:%[0-9]+]]:_(<2 x s64>) = G_UNMERGE_VALUES [[DEF1]](<4 x s64>)
+    ; AVX1: [[ADD:%[0-9]+]]:_(<2 x s64>) = G_ADD [[UV]], [[UV2]]
+    ; AVX1: [[ADD1:%[0-9]+]]:_(<2 x s64>) = G_ADD [[UV1]], [[UV3]]
+    ; AVX1: [[MV:%[0-9]+]]:_(<4 x s64>) = G_MERGE_VALUES [[ADD]](<2 x s64>), [[ADD1]](<2 x s64>)
+    ; SSE2: %ymm0 = COPY [[MV]](<4 x s64>)
+    ; AVX1: %ymm0 = COPY [[MV]](<4 x s64>)
+    ; AVX2: [[ADD:%[0-9]+]]:_(<4 x s64>) = G_ADD [[DEF]], [[DEF1]]
+    ; AVX2: %ymm0 = COPY [[ADD]](<4 x s64>)
+    ; ALL: RET 0
     %0(<4 x s64>) = IMPLICIT_DEF
     %1(<4 x s64>) = IMPLICIT_DEF
     %2(<4 x s64>) = G_ADD %0, %1
+    %ymm0 = COPY %2
     RET 0
 
 ...

test/CodeGen/X86/GlobalISel/legalize-add-v512.mir

+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -mtriple=x86_64-linux-gnu -mattr=+avx               -global-isel -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=AVX1
 # RUN: llc -mtriple=x86_64-linux-gnu -mattr=+avx512f           -global-isel -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=AVX512F
 # RUN: llc -mtriple=x86_64-linux-gnu -mattr=+avx512f,+avx512bw -global-isel -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=AVX512BW
 
 --- |
   define void @test_add_v64i8() {
     %ret = add <64 x i8> undef, undef
     ret void
--- |
 
   define <64 x i8> @test_add_v64i8_2(<64 x i8> %arg1, <64 x i8> %arg2) #0 {
     %ret = add <64 x i8> %arg1, %arg2
     ret <64 x i8> %ret
   }
 ...
 ---
 name:            test_add_v64i8
-# ALL-LABEL: name:  test_add_v64i8
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
-# AVX1:              %0:_(<64 x s8>) = IMPLICIT_DEF
-# AVX1-NEXT:         %1:_(<64 x s8>) = IMPLICIT_DEF
-# AVX1-NEXT:         %3:_(<16 x s8>), %4:_(<16 x s8>), %5:_(<16 x s8>), %6:_(<16 x s8>) = G_UNMERGE_VALUES %0(<64 x s8>)
-# AVX1-NEXT:         %7:_(<16 x s8>), %8:_(<16 x s8>), %9:_(<16 x s8>), %10:_(<16 x s8>) = G_UNMERGE_VALUES %1(<64 x s8>)
-# AVX1-NEXT:         %11:_(<16 x s8>) = G_ADD %3, %7
-# AVX1-NEXT:         %12:_(<16 x s8>) = G_ADD %4, %8
-# AVX1-NEXT:         %13:_(<16 x s8>) = G_ADD %5, %9
-# AVX1-NEXT:         %14:_(<16 x s8>) = G_ADD %6, %10
-# AVX1-NEXT:         %2:_(<64 x s8>) = G_MERGE_VALUES %11(<16 x s8>), %12(<16 x s8>), %13(<16 x s8>), %14(<16 x s8>)
-# AVX1-NEXT:         RET 0
-#
-# AVX512F:           %0:_(<64 x s8>) = IMPLICIT_DEF
-# AVX512F-NEXT:      %1:_(<64 x s8>) = IMPLICIT_DEF
-# AVX512F-NEXT:      %3:_(<32 x s8>), %4:_(<32 x s8>) = G_UNMERGE_VALUES %0(<64 x s8>)
-# AVX512F-NEXT:      %5:_(<32 x s8>), %6:_(<32 x s8>) = G_UNMERGE_VALUES %1(<64 x s8>)
-# AVX512F-NEXT:      %7:_(<32 x s8>) = G_ADD %3, %5
-# AVX512F-NEXT:      %8:_(<32 x s8>) = G_ADD %4, %6
-# AVX512F-NEXT:      %2:_(<64 x s8>) = G_MERGE_VALUES %7(<32 x s8>), %8(<32 x s8>)
-# AVX512F-NEXT:      RET 0
-#
-# AVX512BW:          %0:_(<64 x s8>) = IMPLICIT_DEF
-# AVX512BW-NEXT:     %1:_(<64 x s8>) = IMPLICIT_DEF
-# AVX512BW-NEXT:     %2:_(<64 x s8>) = G_ADD %0, %1
-# AVX512BW-NEXT:     RET 0
 body:             |
   bb.1 (%ir-block.0):
     liveins: %zmm0, %zmm1
 
+    ; ALL-LABEL: name: test_add_v64i8
+    ; ALL: [[DEF:%[0-9]+]]:_(<64 x s8>) = IMPLICIT_DEF
+    ; ALL: [[DEF1:%[0-9]+]]:_(<64 x s8>) = IMPLICIT_DEF
+    ; AVX1: [[UV:%[0-9]+]]:_(<16 x s8>), [[UV1:%[0-9]+]]:_(<16 x s8>), [[UV2:%[0-9]+]]:_(<16 x s8>), [[UV3:%[0-9]+]]:_(<16 x s8>) = G_UNMERGE_VALUES [[DEF]](<64 x s8>)
+    ; AVX1: [[UV4:%[0-9]+]]:_(<16 x s8>), [[UV5:%[0-9]+]]:_(<16 x s8>), [[UV6:%[0-9]+]]:_(<16 x s8>), [[UV7:%[0-9]+]]:_(<16 x s8>) = G_UNMERGE_VALUES [[DEF1]](<64 x s8>)
+    ; AVX1: [[ADD:%[0-9]+]]:_(<16 x s8>) = G_ADD [[UV]], [[UV4]]
+    ; AVX1: [[ADD1:%[0-9]+]]:_(<16 x s8>) = G_ADD [[UV1]], [[UV5]]
+    ; AVX1: [[ADD2:%[0-9]+]]:_(<16 x s8>) = G_ADD [[UV2]], [[UV6]]
+    ; AVX1: [[ADD3:%[0-9]+]]:_(<16 x s8>) = G_ADD [[UV3]], [[UV7]]
+    ; AVX1: [[MV:%[0-9]+]]:_(<64 x s8>) = G_MERGE_VALUES [[ADD]](<16 x s8>), [[ADD1]](<16 x s8>), [[ADD2]](<16 x s8>), [[ADD3]](<16 x s8>)
+    ; AVX1: %zmm0 = COPY [[MV]](<64 x s8>)
+    ; AVX512F: [[UV:%[0-9]+]]:_(<32 x s8>), [[UV1:%[0-9]+]]:_(<32 x s8>) = G_UNMERGE_VALUES [[DEF]](<64 x s8>)
+    ; AVX512F: [[UV2:%[0-9]+]]:_(<32 x s8>), [[UV3:%[0-9]+]]:_(<32 x s8>) = G_UNMERGE_VALUES [[DEF1]](<64 x s8>)
+    ; AVX512F: [[ADD:%[0-9]+]]:_(<32 x s8>) = G_ADD [[UV]], [[UV2]]
+    ; AVX512F: [[ADD1:%[0-9]+]]:_(<32 x s8>) = G_ADD [[UV1]], [[UV3]]
+    ; AVX512F: [[MV:%[0-9]+]]:_(<64 x s8>) = G_MERGE_VALUES [[ADD]](<32 x s8>), [[ADD1]](<32 x s8>)
+    ; AVX512F: %zmm0 = COPY [[MV]](<64 x s8>)
+    ; AVX512BW: [[ADD:%[0-9]+]]:_(<64 x s8>) = G_ADD [[DEF]], [[DEF1]]
+    ; AVX512BW: %zmm0 = COPY [[ADD]](<64 x s8>)
+    ; ALL: RET 0
     %0(<64 x s8>) = IMPLICIT_DEF
     %1(<64 x s8>) = IMPLICIT_DEF
     %2(<64 x s8>) = G_ADD %0, %1
+    %zmm0 = COPY %2
     RET 0
 
 ...
 ---
 name:            test_add_v32i16
-# ALL-LABEL: name:  test_add_v32i16
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
-# AVX1:              %0:_(<32 x s16>) = IMPLICIT_DEF
-# AVX1-NEXT:         %1:_(<32 x s16>) = IMPLICIT_DEF
-# AVX1-NEXT:         %3:_(<8 x s16>), %4:_(<8 x s16>), %5:_(<8 x s16>), %6:_(<8 x s16>) = G_UNMERGE_VALUES %0(<32 x s16>)
-# AVX1-NEXT:         %7:_(<8 x s16>), %8:_(<8 x s16>), %9:_(<8 x s16>), %10:_(<8 x s16>) = G_UNMERGE_VALUES %1(<32 x s16>)
-# AVX1-NEXT:         %11:_(<8 x s16>) = G_ADD %3, %7
-# AVX1-NEXT:         %12:_(<8 x s16>) = G_ADD %4, %8
-# AVX1-NEXT:         %13:_(<8 x s16>) = G_ADD %5, %9
-# AVX1-NEXT:         %14:_(<8 x s16>) = G_ADD %6, %10
-# AVX1-NEXT:         %2:_(<32 x s16>) = G_MERGE_VALUES %11(<8 x s16>), %12(<8 x s16>), %13(<8 x s16>), %14(<8 x s16>)
-# AVX1-NEXT:         RET 0
-#
-# AVX512F:           %0:_(<32 x s16>) = IMPLICIT_DEF
-# AVX512F-NEXT:      %1:_(<32 x s16>) = IMPLICIT_DEF
-# AVX512F-NEXT:      %3:_(<16 x s16>), %4:_(<16 x s16>) = G_UNMERGE_VALUES %0(<32 x s16>)
-# AVX512F-NEXT:      %5:_(<16 x s16>), %6:_(<16 x s16>) = G_UNMERGE_VALUES %1(<32 x s16>)
-# AVX512F-NEXT:      %7:_(<16 x s16>) = G_ADD %3, %5
-# AVX512F-NEXT:      %8:_(<16 x s16>) = G_ADD %4, %6
-# AVX512F-NEXT:      %2:_(<32 x s16>) = G_MERGE_VALUES %7(<16 x s16>), %8(<16 x s16>)
-# AVX512F-NEXT:      RET 0
-#
-# AVX512BW:          %0:_(<32 x s16>) = IMPLICIT_DEF
-# AVX512BW-NEXT:     %1:_(<32 x s16>) = IMPLICIT_DEF
-# AVX512BW-NEXT:     %2:_(<32 x s16>) = G_ADD %0, %1
-# AVX512BW-NEXT:     RET 0
 body:             |
   bb.1 (%ir-block.0):
     liveins: %zmm0, %zmm1
 
+    ; ALL-LABEL: name: test_add_v32i16
+    ; ALL: [[DEF:%[0-9]+]]:_(<32 x s16>) = IMPLICIT_DEF
+    ; ALL: [[DEF1:%[0-9]+]]:_(<32 x s16>) = IMPLICIT_DEF
+    ; AVX1: [[UV:%[0-9]+]]:_(<8 x s16>), [[UV1:%[0-9]+]]:_(<8 x s16>), [[UV2:%[0-9]+]]:_(<8 x s16>), [[UV3:%[0-9]+]]:_(<8 x s16>) = G_UNMERGE_VALUES [[DEF]](<32 x s16>)
+    ; AVX1: [[UV4:%[0-9]+]]:_(<8 x s16>), [[UV5:%[0-9]+]]:_(<8 x s16>), [[UV6:%[0-9]+]]:_(<8 x s16>), [[UV7:%[0-9]+]]:_(<8 x s16>) = G_UNMERGE_VALUES [[DEF1]](<32 x s16>)
+    ; AVX1: [[ADD:%[0-9]+]]:_(<8 x s16>) = G_ADD [[UV]], [[UV4]]
+    ; AVX1: [[ADD1:%[0-9]+]]:_(<8 x s16>) = G_ADD [[UV1]], [[UV5]]
+    ; AVX1: [[ADD2:%[0-9]+]]:_(<8 x s16>) = G_ADD [[UV2]], [[UV6]]
+    ; AVX1: [[ADD3:%[0-9]+]]:_(<8 x s16>) = G_ADD [[UV3]], [[UV7]]
+    ; AVX1: [[MV:%[0-9]+]]:_(<32 x s16>) = G_MERGE_VALUES [[ADD]](<8 x s16>), [[ADD1]](<8 x s16>), [[ADD2]](<8 x s16>), [[ADD3]](<8 x s16>)
+    ; AVX1: %zmm0 = COPY [[MV]](<32 x s16>)
+    ; AVX512F: [[UV:%[0-9]+]]:_(<16 x s16>), [[UV1:%[0-9]+]]:_(<16 x s16>) = G_UNMERGE_VALUES [[DEF]](<32 x s16>)
+    ; AVX512F: [[UV2:%[0-9]+]]:_(<16 x s16>), [[UV3:%[0-9]+]]:_(<16 x s16>) = G_UNMERGE_VALUES [[DEF1]](<32 x s16>)
+    ; AVX512F: [[ADD:%[0-9]+]]:_(<16 x s16>) = G_ADD [[UV]], [[UV2]]
+    ; AVX512F: [[ADD1:%[0-9]+]]:_(<16 x s16>) = G_ADD [[UV1]], [[UV3]]
+    ; AVX512F: [[MV:%[0-9]+]]:_(<32 x s16>) = G_MERGE_VALUES [[ADD]](<16 x s16>), [[ADD1]](<16 x s16>)
+    ; AVX512F: %zmm0 = COPY [[MV]](<32 x s16>)
+    ; AVX512BW: [[ADD:%[0-9]+]]:_(<32 x s16>) = G_ADD [[DEF]], [[DEF1]]
+    ; AVX512BW: %zmm0 = COPY [[ADD]](<32 x s16>)
+    ; ALL: RET 0
     %0(<32 x s16>) = IMPLICIT_DEF
     %1(<32 x s16>) = IMPLICIT_DEF
     %2(<32 x s16>) = G_ADD %0, %1
+    %zmm0 = COPY %2
     RET 0
 
 ...
 ---
 name:            test_add_v16i32
-# ALL-LABEL: name:  test_add_v16i32
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
-# AVX1:              %0:_(<16 x s32>) = IMPLICIT_DEF
-# AVX1-NEXT:         %1:_(<16 x s32>) = IMPLICIT_DEF
-# AVX1-NEXT:         %3:_(<4 x s32>), %4:_(<4 x s32>), %5:_(<4 x s32>), %6:_(<4 x s32>) = G_UNMERGE_VALUES %0(<16 x s32>)
-# AVX1-NEXT:         %7:_(<4 x s32>), %8:_(<4 x s32>), %9:_(<4 x s32>), %10:_(<4 x s32>) = G_UNMERGE_VALUES %1(<16 x s32>)
-# AVX1-NEXT:         %11:_(<4 x s32>) = G_ADD %3, %7
-# AVX1-NEXT:         %12:_(<4 x s32>) = G_ADD %4, %8
-# AVX1-NEXT:         %13:_(<4 x s32>) = G_ADD %5, %9
-# AVX1-NEXT:         %14:_(<4 x s32>) = G_ADD %6, %10
-# AVX1-NEXT:         %2:_(<16 x s32>) = G_MERGE_VALUES %11(<4 x s32>), %12(<4 x s32>), %13(<4 x s32>), %14(<4 x s32>)
-# AVX1-NEXT:         RET 0
-#
-# AVX512F:           %0:_(<16 x s32>) = IMPLICIT_DEF
-# AVX512F-NEXT:      %1:_(<16 x s32>) = IMPLICIT_DEF
-# AVX512F-NEXT:      %2:_(<16 x s32>) = G_ADD %0, %1
-# AVX512F-NEXT:      RET 0
-#
-# AVX512BW:          %0:_(<16 x s32>) = IMPLICIT_DEF
-# AVX512BW-NEXT:     %1:_(<16 x s32>) = IMPLICIT_DEF
-# AVX512BW-NEXT:     %2:_(<16 x s32>) = G_ADD %0, %1
-# AVX512BW-NEXT:     RET 0
 body:             |
   bb.1 (%ir-block.0):
     liveins: %zmm0, %zmm1
 
+    ; ALL-LABEL: name: test_add_v16i32
+    ; ALL: [[DEF:%[0-9]+]]:_(<16 x s32>) = IMPLICIT_DEF
+    ; ALL: [[DEF1:%[0-9]+]]:_(<16 x s32>) = IMPLICIT_DEF
+    ; AVX1: [[UV:%[0-9]+]]:_(<4 x s32>), [[UV1:%[0-9]+]]:_(<4 x s32>), [[UV2:%[0-9]+]]:_(<4 x s32>), [[UV3:%[0-9]+]]:_(<4 x s32>) = G_UNMERGE_VALUES [[DEF]](<16 x s32>)
+    ; AVX1: [[UV4:%[0-9]+]]:_(<4 x s32>), [[UV5:%[0-9]+]]:_(<4 x s32>), [[UV6:%[0-9]+]]:_(<4 x s32>), [[UV7:%[0-9]+]]:_(<4 x s32>) = G_UNMERGE_VALUES [[DEF1]](<16 x s32>)
+    ; AVX1: [[ADD:%[0-9]+]]:_(<4 x s32>) = G_ADD [[UV]], [[UV4]]
+    ; AVX1: [[ADD1:%[0-9]+]]:_(<4 x s32>) = G_ADD [[UV1]], [[UV5]]
+    ; AVX1: [[ADD2:%[0-9]+]]:_(<4 x s32>) = G_ADD [[UV2]], [[UV6]]
+    ; AVX1: [[ADD3:%[0-9]+]]:_(<4 x s32>) = G_ADD [[UV3]], [[UV7]]
+    ; AVX1: [[MV:%[0-9]+]]:_(<16 x s32>) = G_MERGE_VALUES [[ADD]](<4 x s32>), [[ADD1]](<4 x s32>), [[ADD2]](<4 x s32>), [[ADD3]](<4 x s32>)
+    ; AVX1: %zmm0 = COPY [[MV]](<16 x s32>)
+    ; AVX512F: [[ADD:%[0-9]+]]:_(<16 x s32>) = G_ADD [[DEF]], [[DEF1]]
+    ; AVX512F: %zmm0 = COPY [[ADD]](<16 x s32>)
+    ; AVX512BW: [[ADD:%[0-9]+]]:_(<16 x s32>) = G_ADD [[DEF]], [[DEF1]]
+    ; AVX512BW: %zmm0 = COPY [[ADD]](<16 x s32>)
+    ; ALL: RET 0
     %0(<16 x s32>) = IMPLICIT_DEF
     %1(<16 x s32>) = IMPLICIT_DEF
     %2(<16 x s32>) = G_ADD %0, %1
+    %zmm0 = COPY %2
     RET 0
 
 ...
 ---
 name:            test_add_v8i64
-# ALL-LABEL: name:  test_add_v8i64
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
-# AVX1:              %0:_(<8 x s64>) = IMPLICIT_DEF
-# AVX1-NEXT:         %1:_(<8 x s64>) = IMPLICIT_DEF
-# AVX1-NEXT:         %3:_(<2 x s64>), %4:_(<2 x s64>), %5:_(<2 x s64>), %6:_(<2 x s64>) = G_UNMERGE_VALUES %0(<8 x s64>)
-# AVX1-NEXT:         %7:_(<2 x s64>), %8:_(<2 x s64>), %9:_(<2 x s64>), %10:_(<2 x s64>) = G_UNMERGE_VALUES %1(<8 x s64>)
-# AVX1-NEXT:         %11:_(<2 x s64>) = G_ADD %3, %7
-# AVX1-NEXT:         %12:_(<2 x s64>) = G_ADD %4, %8
-# AVX1-NEXT:         %13:_(<2 x s64>) = G_ADD %5, %9
-# AVX1-NEXT:         %14:_(<2 x s64>) = G_ADD %6, %10
-# AVX1-NEXT:         %2:_(<8 x s64>) = G_MERGE_VALUES %11(<2 x s64>), %12(<2 x s64>), %13(<2 x s64>), %14(<2 x s64>)
-# AVX1-NEXT:         RET 0
-#
-# AVX512F:           %0:_(<8 x s64>) = IMPLICIT_DEF
-# AVX512F-NEXT:      %1:_(<8 x s64>) = IMPLICIT_DEF
-# AVX512F-NEXT:      %2:_(<8 x s64>) = G_ADD %0, %1
-# AVX512F-NEXT:      RET 0
-#
-# AVX512BW:          %0:_(<8 x s64>) = IMPLICIT_DEF
-# AVX512BW-NEXT:     %1:_(<8 x s64>) = IMPLICIT_DEF
-# AVX512BW-NEXT:     %2:_(<8 x s64>) = G_ADD %0, %1
-# AVX512BW-NEXT:     RET 0
 body:             |
   bb.1 (%ir-block.0):
     liveins: %zmm0, %zmm1
 
+    ; ALL-LABEL: name: test_add_v8i64
+    ; ALL: [[DEF:%[0-9]+]]:_(<8 x s64>) = IMPLICIT_DEF
+    ; ALL: [[DEF1:%[0-9]+]]:_(<8 x s64>) = IMPLICIT_DEF
+    ; AVX1: [[UV:%[0-9]+]]:_(<2 x s64>), [[UV1:%[0-9]+]]:_(<2 x s64>), [[UV2:%[0-9]+]]:_(<2 x s64>), [[UV3:%[0-9]+]]:_(<2 x s64>) = G_UNMERGE_VALUES [[DEF]](<8 x s64>)
+    ; AVX1: [[UV4:%[0-9]+]]:_(<2 x s64>), [[UV5:%[0-9]+]]:_(<2 x s64>), [[UV6:%[0-9]+]]:_(<2 x s64>), [[UV7:%[0-9]+]]:_(<2 x s64>) = G_UNMERGE_VALUES [[DEF1]](<8 x s64>)
+    ; AVX1: [[ADD:%[0-9]+]]:_(<2 x s64>) = G_ADD [[UV]], [[UV4]]
+    ; AVX1: [[ADD1:%[0-9]+]]:_(<2 x s64>) = G_ADD [[UV1]], [[UV5]]
+    ; AVX1: [[ADD2:%[0-9]+]]:_(<2 x s64>) = G_ADD [[UV2]], [[UV6]]
+    ; AVX1: [[ADD3:%[0-9]+]]:_(<2 x s64>) = G_ADD [[UV3]], [[UV7]]
+    ; AVX1: [[MV:%[0-9]+]]:_(<8 x s64>) = G_MERGE_VALUES [[ADD]](<2 x s64>), [[ADD1]](<2 x s64>), [[ADD2]](<2 x s64>), [[ADD3]](<2 x s64>)
+    ; AVX1: %zmm0 = COPY [[MV]](<8 x s64>)
+    ; AVX512F: [[ADD:%[0-9]+]]:_(<8 x s64>) = G_ADD [[DEF]], [[DEF1]]
+    ; AVX512F: %zmm0 = COPY [[ADD]](<8 x s64>)
+    ; AVX512BW: [[ADD:%[0-9]+]]:_(<8 x s64>) = G_ADD [[DEF]], [[DEF1]]
+    ; AVX512BW: %zmm0 = COPY [[ADD]](<8 x s64>)
+    ; ALL: RET 0
     %0(<8 x s64>) = IMPLICIT_DEF
     %1(<8 x s64>) = IMPLICIT_DEF
     %2(<8 x s64>) = G_ADD %0, %1
+    %zmm0 = COPY %2
     RET 0
 
 ...
 ---
 name:            test_add_v64i8_2
-# ALL-LABEL: name:  test_add_v64i8_2
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
   - { id: 3, class: _ }
   - { id: 4, class: _ }
   - { id: 5, class: _ }
   - { id: 6, class: _ }
   - { id: 7, class: _ }
   - { id: 8, class: _ }
-# AVX1:              %2:_(<32 x s8>) = COPY %ymm0
-# AVX1-NEXT:         %3:_(<32 x s8>) = COPY %ymm1
-# AVX1-NEXT:         %4:_(<32 x s8>) = COPY %ymm2
-# AVX1-NEXT:         %5:_(<32 x s8>) = COPY %ymm3
-# AVX1-NEXT:         %9:_(<16 x s8>), %10:_(<16 x s8>) = G_UNMERGE_VALUES %2(<32 x s8>)
-# AVX1-NEXT:         %11:_(<16 x s8>), %12:_(<16 x s8>) = G_UNMERGE_VALUES %3(<32 x s8>)
-# AVX1-NEXT:         %13:_(<16 x s8>), %14:_(<16 x s8>) = G_UNMERGE_VALUES %4(<32 x s8>)
-# AVX1-NEXT:         %15:_(<16 x s8>), %16:_(<16 x s8>) = G_UNMERGE_VALUES %5(<32 x s8>)
-# AVX1-NEXT:         %17:_(<16 x s8>) = G_ADD %9, %13
-# AVX1-NEXT:         %18:_(<16 x s8>) = G_ADD %10, %14
-# AVX1-NEXT:         %19:_(<16 x s8>) = G_ADD %11, %15
-# AVX1-NEXT:         %20:_(<16 x s8>) = G_ADD %12, %16
-# AVX1-NEXT:         %7:_(<32 x s8>) = G_MERGE_VALUES %17(<16 x s8>), %18(<16 x s8>)
-# AVX1-NEXT:         %8:_(<32 x s8>) = G_MERGE_VALUES %19(<16 x s8>), %20(<16 x s8>)
-# AVX1-NEXT:         %ymm0 = COPY %7(<32 x s8>)
-# AVX1-NEXT:         %ymm1 = COPY %8(<32 x s8>)
-# AVX1-NEXT:         RET 0, implicit %ymm0, implicit %ymm1
 #
-# AVX512F:           %2:_(<32 x s8>) = COPY %ymm0
-# AVX512F-NEXT:      %3:_(<32 x s8>) = COPY %ymm1
-# AVX512F-NEXT:      %4:_(<32 x s8>) = COPY %ymm2
-# AVX512F-NEXT:      %5:_(<32 x s8>) = COPY %ymm3
-# AVX512F-NEXT:      %13:_(<32 x s8>) = G_ADD %2, %4
-# AVX512F-NEXT:      %14:_(<32 x s8>) = G_ADD %3, %5
-# AVX512F-NEXT:      %ymm0 = COPY %13(<32 x s8>)
-# AVX512F-NEXT:      %ymm1 = COPY %14(<32 x s8>)
-# AVX512F-NEXT:      RET 0, implicit %ymm0, implicit %ymm1
 #
-# AVX512BW:          %2:_(<32 x s8>) = COPY %ymm0
-# AVX512BW-NEXT:     %3:_(<32 x s8>) = COPY %ymm1
-# AVX512BW-NEXT:     %4:_(<32 x s8>) = COPY %ymm2
-# AVX512BW-NEXT:     %5:_(<32 x s8>) = COPY %ymm3
-# AVX512BW-NEXT:     %0:_(<64 x s8>) = G_MERGE_VALUES %2(<32 x s8>), %3(<32 x s8>)
-# AVX512BW-NEXT:     %1:_(<64 x s8>) = G_MERGE_VALUES %4(<32 x s8>), %5(<32 x s8>)
-# AVX512BW-NEXT:     %6:_(<64 x s8>) = G_ADD %0, %1
-# AVX512BW-NEXT:     %7:_(<32 x s8>), %8:_(<32 x s8>) = G_UNMERGE_VALUES %6(<64 x s8>)
-# AVX512BW-NEXT:     %ymm0 = COPY %7(<32 x s8>)
-# AVX512BW-NEXT:     %ymm1 = COPY %8(<32 x s8>)
-# AVX512BW-NEXT:     RET 0, implicit %ymm0, implicit %ymm1
 body:             |
   bb.1 (%ir-block.0):
     liveins: %ymm0, %ymm1, %ymm2, %ymm3
 
+    ; ALL-LABEL: name: test_add_v64i8_2
+    ; ALL: [[COPY:%[0-9]+]]:_(<32 x s8>) = COPY %ymm0
+    ; ALL: [[COPY1:%[0-9]+]]:_(<32 x s8>) = COPY %ymm1
+    ; ALL: [[COPY2:%[0-9]+]]:_(<32 x s8>) = COPY %ymm2
+    ; ALL: [[COPY3:%[0-9]+]]:_(<32 x s8>) = COPY %ymm3
+    ; AVX1: [[UV:%[0-9]+]]:_(<16 x s8>), [[UV1:%[0-9]+]]:_(<16 x s8>) = G_UNMERGE_VALUES [[COPY]](<32 x s8>)
+    ; AVX1: [[UV2:%[0-9]+]]:_(<16 x s8>), [[UV3:%[0-9]+]]:_(<16 x s8>) = G_UNMERGE_VALUES [[COPY1]](<32 x s8>)
+    ; AVX1: [[UV4:%[0-9]+]]:_(<16 x s8>), [[UV5:%[0-9]+]]:_(<16 x s8>) = G_UNMERGE_VALUES [[COPY2]](<32 x s8>)
+    ; AVX1: [[UV6:%[0-9]+]]:_(<16 x s8>), [[UV7:%[0-9]+]]:_(<16 x s8>) = G_UNMERGE_VALUES [[COPY3]](<32 x s8>)
+    ; AVX1: [[ADD:%[0-9]+]]:_(<16 x s8>) = G_ADD [[UV]], [[UV4]]
+    ; AVX1: [[ADD1:%[0-9]+]]:_(<16 x s8>) = G_ADD [[UV1]], [[UV5]]
+    ; AVX1: [[ADD2:%[0-9]+]]:_(<16 x s8>) = G_ADD [[UV2]], [[UV6]]
+    ; AVX1: [[ADD3:%[0-9]+]]:_(<16 x s8>) = G_ADD [[UV3]], [[UV7]]
+    ; AVX1: [[MV:%[0-9]+]]:_(<32 x s8>) = G_MERGE_VALUES [[ADD]](<16 x s8>), [[ADD1]](<16 x s8>)
+    ; AVX1: [[MV1:%[0-9]+]]:_(<32 x s8>) = G_MERGE_VALUES [[ADD2]](<16 x s8>), [[ADD3]](<16 x s8>)
+    ; AVX1: %ymm0 = COPY [[MV]](<32 x s8>)
+    ; AVX1: %ymm1 = COPY [[MV1]](<32 x s8>)
+    ; AVX512F: [[ADD:%[0-9]+]]:_(<32 x s8>) = G_ADD [[COPY]], [[COPY2]]
+    ; AVX512F: [[ADD1:%[0-9]+]]:_(<32 x s8>) = G_ADD [[COPY1]], [[COPY3]]
+    ; AVX512F: %ymm0 = COPY [[ADD]](<32 x s8>)
+    ; AVX512F: %ymm1 = COPY [[ADD1]](<32 x s8>)
+    ; AVX512BW: [[MV:%[0-9]+]]:_(<64 x s8>) = G_MERGE_VALUES [[COPY]](<32 x s8>), [[COPY1]](<32 x s8>)
+    ; AVX512BW: [[MV1:%[0-9]+]]:_(<64 x s8>) = G_MERGE_VALUES [[COPY2]](<32 x s8>), [[COPY3]](<32 x s8>)
+    ; AVX512BW: [[ADD:%[0-9]+]]:_(<64 x s8>) = G_ADD [[MV]], [[MV1]]
+    ; AVX512BW: [[UV:%[0-9]+]]:_(<32 x s8>), [[UV1:%[0-9]+]]:_(<32 x s8>) = G_UNMERGE_VALUES [[ADD]](<64 x s8>)
+    ; AVX512BW: %ymm0 = COPY [[UV]](<32 x s8>)
+    ; AVX512BW: %ymm1 = COPY [[UV1]](<32 x s8>)
+    ; ALL: RET 0, implicit %ymm0, implicit %ymm1
     %2(<32 x s8>) = COPY %ymm0
     %3(<32 x s8>) = COPY %ymm1
     %4(<32 x s8>) = COPY %ymm2
     %5(<32 x s8>) = COPY %ymm3
     %0(<64 x s8>) = G_MERGE_VALUES %2(<32 x s8>), %3(<32 x s8>)
     %1(<64 x s8>) = G_MERGE_VALUES %4(<32 x s8>), %5(<32 x s8>)
     %6(<64 x s8>) = G_ADD %0, %1
     %7(<32 x s8>), %8(<32 x s8>) = G_UNMERGE_VALUES %6(<64 x s8>)
     %ymm0 = COPY %7(<32 x s8>)
     %ymm1 = COPY %8(<32 x s8>)
     RET 0, implicit %ymm0, implicit %ymm1
 
 ...

test/CodeGen/X86/GlobalISel/legalize-add.mir

+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -mtriple=x86_64-linux-gnu -global-isel -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X64
 # RUN: llc -mtriple=i386-linux-gnu   -global-isel -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X32
 --- |
 
   define void @test_add_i1() { ret void}
   define void @test_add_i32() { ret void }
   define void @test_add_i64() { ret void }
 
 ...
 ---
 name:            test_add_i1
 # CHECK-LABEL: name:  test_add_i1
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _, preferred-register: '' }
   - { id: 1, class: _, preferred-register: '' }
   - { id: 2, class: _, preferred-register: '' }
 # CHECK:          %0(s32) = COPY %edx
 # CHECK-NEXT:     %3(s8) = G_TRUNC %0(s32)
 # CHECK-NEXT:     %4(s8) = G_TRUNC %0(s32)
 # CHECK-NEXT:     %5(s8) = G_ADD %3, %4
-# CHECK-NEXT:     %2(s1) = G_TRUNC %5(s8)
-# CHECK-NEXT:     RET 0
+# CHECK:     RET 0
 body:             |
   bb.1 (%ir-block.0):
 
+    ; X64-LABEL: name: test_add_i1
+    ; X64: [[COPY:%[0-9]+]]:_(s32) = COPY %edx
+    ; X64: [[TRUNC:%[0-9]+]]:_(s8) = G_TRUNC [[COPY]](s32)
+    ; X64: [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[COPY]](s32)
+    ; X64: [[ADD:%[0-9]+]]:_(s8) = G_ADD [[TRUNC]], [[TRUNC1]]
+    ; X64: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[ADD]](s8)
+    ; X64: %eax = COPY [[ANYEXT]](s32)
+    ; X64: RET 0
+    ; X32-LABEL: name: test_add_i1
+    ; X32: [[COPY:%[0-9]+]]:_(s32) = COPY %edx
+    ; X32: [[TRUNC:%[0-9]+]]:_(s8) = G_TRUNC [[COPY]](s32)
+    ; X32: [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[COPY]](s32)
+    ; X32: [[ADD:%[0-9]+]]:_(s8) = G_ADD [[TRUNC]], [[TRUNC1]]
+    ; X32: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[ADD]](s8)
+    ; X32: %eax = COPY [[ANYEXT]](s32)
+    ; X32: RET 0
     %0(s32) = COPY %edx
     %1(s1) = G_TRUNC %0(s32)
     %2(s1) = G_ADD %1, %1
+    %3:_(s32) = G_ANYEXT %2
+    %eax = COPY %3
     RET 0
 ...
 ---
 name:            test_add_i32
-# ALL-LABEL: name:  test_add_i32
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
-# ALL:          %0:_(s32) = IMPLICIT_DEF
-# ALL-NEXT:     %1:_(s32) = IMPLICIT_DEF
-# ALL-NEXT:     %2:_(s32) = G_ADD %0, %1
-# ALL-NEXT:     RET 0
 body:             |
   bb.1 (%ir-block.0):
+    ; X64-LABEL: name: test_add_i32
+    ; X64: [[DEF:%[0-9]+]]:_(s32) = IMPLICIT_DEF
+    ; X64: [[DEF1:%[0-9]+]]:_(s32) = IMPLICIT_DEF
+    ; X64: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[DEF]], [[DEF1]]
+    ; X64: %eax = COPY [[ADD]](s32)
+    ; X64: RET 0
+    ; X32-LABEL: name: test_add_i32
+    ; X32: [[DEF:%[0-9]+]]:_(s32) = IMPLICIT_DEF
+    ; X32: [[DEF1:%[0-9]+]]:_(s32) = IMPLICIT_DEF
+    ; X32: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[DEF]], [[DEF1]]
+    ; X32: %eax = COPY [[ADD]](s32)
+    ; X32: RET 0
     %0(s32) = IMPLICIT_DEF
     %1(s32) = IMPLICIT_DEF
     %2(s32) = G_ADD %0, %1
+    %eax = COPY %2
     RET 0
 
 ...
 ---
 name:            test_add_i64
-# ALL-LABEL: name:  test_add_i64
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
-# X64:          %0:_(s64) = IMPLICIT_DEF
-# X64-NEXT:     %1:_(s64) = IMPLICIT_DEF
-# X64-NEXT:     %2:_(s64) = G_ADD %0, %1
-# X64-NEXT:     RET 0
-#
-# X32:          %0:_(s64) = IMPLICIT_DEF
-# X32-NEXT:     %1:_(s64) = IMPLICIT_DEF
-# X32-NEXT:     %3:_(s32), %4:_(s32) = G_UNMERGE_VALUES %0(s64)
-# X32-NEXT:     %5:_(s32), %6:_(s32) = G_UNMERGE_VALUES %1(s64)
-# X32-NEXT:     %12:_(s8) = G_CONSTANT i8 0
-# X32-NEXT:     %7:_(s1) = G_TRUNC %12(s8)
-# X32-NEXT:     %8:_(s32), %9:_(s1) = G_UADDE %3, %5, %7
-# X32-NEXT:     %10:_(s32), %11:_(s1) = G_UADDE %4, %6, %9
-# X32-NEXT:     %2:_(s64) = G_MERGE_VALUES %8(s32), %10(s32)
-# X32-NEXT:     RET 0
 body:             |
   bb.1 (%ir-block.0):
+    ; X64-LABEL: name: test_add_i64
+    ; X64: [[DEF:%[0-9]+]]:_(s64) = IMPLICIT_DEF
+    ; X64: [[DEF1:%[0-9]+]]:_(s64) = IMPLICIT_DEF
+    ; X64: [[ADD:%[0-9]+]]:_(s64) = G_ADD [[DEF]], [[DEF1]]
+    ; X64: %rax = COPY [[ADD]](s64)
+    ; X64: RET 0
+    ; X32-LABEL: name: test_add_i64
+    ; X32: [[DEF:%[0-9]+]]:_(s64) = IMPLICIT_DEF
+    ; X32: [[DEF1:%[0-9]+]]:_(s64) = IMPLICIT_DEF
+    ; X32: [[UV:%[0-9]+]]:_(s32), [[UV1:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[DEF]](s64)
+    ; X32: [[UV2:%[0-9]+]]:_(s32), [[UV3:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[DEF1]](s64)
+    ; X32: [[C:%[0-9]+]]:_(s8) = G_CONSTANT i8 0
+    ; X32: [[TRUNC:%[0-9]+]]:_(s1) = G_TRUNC [[C]](s8)
+    ; X32: [[UADDE:%[0-9]+]]:_(s32), [[UADDE1:%[0-9]+]]:_(s1) = G_UADDE [[UV]], [[UV2]], [[TRUNC]]
+    ; X32: [[UADDE2:%[0-9]+]]:_(s32), [[UADDE3:%[0-9]+]]:_(s1) = G_UADDE [[UV1]], [[UV3]], [[UADDE1]]
+    ; X32: [[MV:%[0-9]+]]:_(s64) = G_MERGE_VALUES [[UADDE]](s32), [[UADDE2]](s32)
+    ; X32: %rax = COPY [[MV]](s64)
+    ; X32: RET 0
     %0(s64) = IMPLICIT_DEF
     %1(s64) = IMPLICIT_DEF
     %2(s64) = G_ADD %0, %1
+    %rax = COPY %2
     RET 0
 
 ...

test/CodeGen/X86/GlobalISel/legalize-and-scalar.mir

 body:             |
   bb.1 (%ir-block.0):
 
     ; CHECK-LABEL: name: test_and_i1
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %edx
     ; CHECK: [[TRUNC:%[0-9]+]]:_(s8) = G_TRUNC [[COPY]](s32)
     ; CHECK: [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[COPY]](s32)
     ; CHECK: [[AND:%[0-9]+]]:_(s8) = G_AND [[TRUNC]], [[TRUNC1]]
-    ; CHECK: [[TRUNC2:%[0-9]+]]:_(s1) = G_TRUNC [[AND]](s8)
+    ; CHECK: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[AND]](s8)
+    ; CHECK: %eax = COPY [[ANYEXT]](s32)
     ; CHECK: RET 0
     %0(s32) = COPY %edx
     %1(s1) = G_TRUNC %0(s32)
     %2(s1) = G_AND %1, %1
+    %3:_(s32) = G_ANYEXT %2
+    %eax = COPY %3
     RET 0
 ...
 ---
 name:            test_and_i8
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:

test/CodeGen/X86/GlobalISel/legalize-constant.mir

+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -mtriple=i386-linux-gnu   -mattr=+sse2 -global-isel -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X32
 # RUN: llc -mtriple=x86_64-linux-gnu              -global-isel -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X64
 
 --- |
   define void @test_constant() { ret void }
   define void @test_fconstant() { ret void }
 
 ...
 ---
 name:            test_constant
-# ALL-LABEL: name:            test_constant
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
   - { id: 3, class: _ }
   - { id: 4, class: _ }
 body:             |
   bb.1 (%ir-block.0):
-    ; ALL: %5:_(s8) = G_CONSTANT i8 -1
-    ; ALL: %0:_(s1) = G_TRUNC %5(s8)
+    ; X32-LABEL: name: test_constant
+    ; X32: [[C:%[0-9]+]]:_(s8) = G_CONSTANT i8 -1
+    ; X32: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[C]](s8)
+    ; X32: %eax = COPY [[ANYEXT]](s32)
+    ; X32: [[C1:%[0-9]+]]:_(s8) = G_CONSTANT i8 8
+    ; X32: %al = COPY [[C1]](s8)
+    ; X32: [[C2:%[0-9]+]]:_(s16) = G_CONSTANT i16 16
+    ; X32: %ax = COPY [[C2]](s16)
+    ; X32: [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 32
+    ; X32: %eax = COPY [[C3]](s32)
+    ; X32: [[C4:%[0-9]+]]:_(s32) = G_CONSTANT i32 64
+    ; X32: [[C5:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
+    ; X32: [[MV:%[0-9]+]]:_(s64) = G_MERGE_VALUES [[C4]](s32), [[C5]](s32)
+    ; X32: %rax = COPY [[MV]](s64)
+    ; X32: RET 0
+    ; X64-LABEL: name: test_constant
+    ; X64: [[C:%[0-9]+]]:_(s8) = G_CONSTANT i8 -1
+    ; X64: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[C]](s8)
+    ; X64: %eax = COPY [[ANYEXT]](s32)
+    ; X64: [[C1:%[0-9]+]]:_(s8) = G_CONSTANT i8 8
+    ; X64: %al = COPY [[C1]](s8)
+    ; X64: [[C2:%[0-9]+]]:_(s16) = G_CONSTANT i16 16
+    ; X64: %ax = COPY [[C2]](s16)
+    ; X64: [[C3:%[0-9]+]]:_(s32) = G_CONSTANT i32 32
+    ; X64: %eax = COPY [[C3]](s32)
+    ; X64: [[C4:%[0-9]+]]:_(s64) = G_CONSTANT i64 64
+    ; X64: %rax = COPY [[C4]](s64)
+    ; X64: RET 0
     %0(s1) = G_CONSTANT i1 1
+    %5:_(s32) = G_ANYEXT %0
+    %eax = COPY %5
 
-    ; ALL: %1:_(s8) = G_CONSTANT i8 8
     %1(s8) = G_CONSTANT i8 8
-
-    ; ALL: %2:_(s16) = G_CONSTANT i16 16
+    %al = COPY %1
     %2(s16) = G_CONSTANT i16 16
+    %ax = COPY %2
 
-    ; ALL: %3:_(s32) = G_CONSTANT i32 32
     %3(s32) = G_CONSTANT i32 32
+    %eax = COPY %3
 
-    ; X64: %4:_(s64) = G_CONSTANT i64 64
 
-    ; X32: %6:_(s32) = G_CONSTANT i32 64
-    ; X32: %7:_(s32) = G_CONSTANT i32 0
-    ; X32: %4:_(s64) = G_MERGE_VALUES %6(s32), %7(s32)
     %4(s64) = G_CONSTANT i64 64
+    %rax = COPY %4
 
     RET 0
 ...
 ---
 name:            test_fconstant
-# ALL-LABEL: name:            test_fconstant
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
 body: |
   bb.0:
-    ; ALL: %0:_(s32) = G_FCONSTANT  float 1.000000e+00
-    ; ALL: %1:_(s64) = G_FCONSTANT  double 2.000000e+00
 
+    ; X32-LABEL: name: test_fconstant
+    ; X32: [[C:%[0-9]+]]:_(s32) = G_FCONSTANT float 1.000000e+00
+    ; X32: %eax = COPY [[C]](s32)
+    ; X32: [[C1:%[0-9]+]]:_(s64) = G_FCONSTANT double 2.000000e+00
+    ; X32: %rax = COPY [[C1]](s64)
+    ; X64-LABEL: name: test_fconstant
+    ; X64: [[C:%[0-9]+]]:_(s32) = G_FCONSTANT float 1.000000e+00
+    ; X64: %eax = COPY [[C]](s32)
+    ; X64: [[C1:%[0-9]+]]:_(s64) = G_FCONSTANT double 2.000000e+00
+    ; X64: %rax = COPY [[C1]](s64)
     %0(s32) = G_FCONSTANT float 1.0
+    %eax = COPY %0
     %1(s64) = G_FCONSTANT double 2.0
+    %rax = COPY %1
 ...
 

test/CodeGen/X86/GlobalISel/legalize-ext-x86-64.mir

registers:
   - { id: 1, class: _ }
   - { id: 2, class: _ }
 body:             |
   bb.1 (%ir-block.0):
     liveins: %edi
 
     ; CHECK-LABEL: name: test_zext_i1
     ; CHECK: [[COPY:%[0-9]+]]:_(s8) = COPY %dil
-    ; CHECK: [[TRUNC:%[0-9]+]]:_(s1) = G_TRUNC [[COPY]](s8)
-    ; CHECK: [[ZEXT:%[0-9]+]]:_(s64) = G_ZEXT [[TRUNC]](s1)
-    ; CHECK: %rax = COPY [[ZEXT]](s64)
+    ; CHECK: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 1
+    ; CHECK: [[ANYEXT:%[0-9]+]]:_(s64) = G_ANYEXT [[COPY]](s8)
+    ; CHECK: [[AND:%[0-9]+]]:_(s64) = G_AND [[ANYEXT]], [[C]]
+    ; CHECK: %rax = COPY [[AND]](s64)
     ; CHECK: RET 0, implicit %rax
     %0(s8) = COPY %dil
     %1(s1) = G_TRUNC %0(s8)
     %2(s64) = G_ZEXT %1(s1)
     %rax = COPY %2(s64)
     RET 0, implicit %rax
 
 ...
registers:
   - { id: 1, class: _ }
   - { id: 2, class: _ }
 body:             |
   bb.1 (%ir-block.0):
     liveins: %edi
 
     ; CHECK-LABEL: name: test_anyext_i1
     ; CHECK: [[COPY:%[0-9]+]]:_(s8) = COPY %dil
-    ; CHECK: [[TRUNC:%[0-9]+]]:_(s1) = G_TRUNC [[COPY]](s8)
-    ; CHECK: [[ANYEXT:%[0-9]+]]:_(s64) = G_ANYEXT [[TRUNC]](s1)
+    ; CHECK: [[ANYEXT:%[0-9]+]]:_(s64) = G_ANYEXT [[COPY]](s8)
     ; CHECK: %rax = COPY [[ANYEXT]](s64)
     ; CHECK: RET 0, implicit %rax
     %0(s8) = COPY %dil
     %1(s1) = G_TRUNC %0(s8)
     %2(s64) = G_ANYEXT %1(s1)
     %rax = COPY %2(s64)
     RET 0, implicit %rax
 

test/CodeGen/X86/GlobalISel/legalize-ext.mir

+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -mtriple=i386-linux-gnu   -global-isel -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X32
 # RUN: llc -mtriple=x86_64-linux-gnu -global-isel -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X64
 --- |
 
   define i8 @test_zext_i1toi8(i1 %a) {
     %r = zext i1 %a to i8
     ret i8 %r
   }
--- |
 
   define void @test_anyext_i16(i16 %val) {
     ret void
   }
 
 ...
 ---
 name:            test_zext_i1toi8
-# ALL-LABEL: name:  test_zext_i1toi8
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _, preferred-register: '' }
   - { id: 1, class: _, preferred-register: '' }
-# ALL:          %0:_(s1) = COPY %edi
-# ALL-NEXT:     %1:_(s8) = G_ZEXT %0(s1)
-# ALL-NEXT:     %al = COPY %1(s8)
-# ALL-NEXT:     RET 0, implicit %al
 body:             |
   bb.1 (%ir-block.0):
     liveins: %edi
 
+    ; X32-LABEL: name: test_zext_i1toi8
+    ; X32: [[COPY:%[0-9]+]]:_(s1) = COPY %edi
+    ; X32: [[ZEXT:%[0-9]+]]:_(s8) = G_ZEXT [[COPY]](s1)
+    ; X32: %al = COPY [[ZEXT]](s8)
+    ; X32: RET 0, implicit %al
+    ; X64-LABEL: name: test_zext_i1toi8
+    ; X64: [[COPY:%[0-9]+]]:_(s1) = COPY %edi
+    ; X64: [[ZEXT:%[0-9]+]]:_(s8) = G_ZEXT [[COPY]](s1)
+    ; X64: %al = COPY [[ZEXT]](s8)
+    ; X64: RET 0, implicit %al
     %0(s1) = COPY %edi
     %1(s8) = G_ZEXT %0(s1)
     %al = COPY %1(s8)
     RET 0, implicit %al
 
 ...
 ---
 name:            test_zext_i1toi16
-# ALL-LABEL: name:  test_zext_i1toi16
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _, preferred-register: '' }
   - { id: 1, class: _, preferred-register: '' }
-# ALL:          %0:_(s1) = COPY %edi
-# ALL-NEXT:     %1:_(s16) = G_ZEXT %0(s1)
-# ALL-NEXT:     %ax = COPY %1(s16)
-# ALL-NEXT:     RET 0, implicit %ax
 body:             |
   bb.1 (%ir-block.0):
     liveins: %edi
 
+    ; X32-LABEL: name: test_zext_i1toi16
+    ; X32: [[COPY:%[0-9]+]]:_(s1) = COPY %edi
+    ; X32: [[ZEXT:%[0-9]+]]:_(s16) = G_ZEXT [[COPY]](s1)
+    ; X32: %ax = COPY [[ZEXT]](s16)
+    ; X32: RET 0, implicit %ax
+    ; X64-LABEL: name: test_zext_i1toi16
+    ; X64: [[COPY:%[0-9]+]]:_(s1) = COPY %edi
+    ; X64: [[ZEXT:%[0-9]+]]:_(s16) = G_ZEXT [[COPY]](s1)
+    ; X64: %ax = COPY [[ZEXT]](s16)
+    ; X64: RET 0, implicit %ax
     %0(s1) = COPY %edi
     %1(s16) = G_ZEXT %0(s1)
     %ax = COPY %1(s16)
     RET 0, implicit %ax
 
 ...
 ---
 name:            test_zext_i1
-# ALL-LABEL: name:  test_zext_i1
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
-# ALL:          %0:_(s8) = COPY %dil
-# ALL-NEXT:     %1:_(s1) = G_TRUNC %0(s8)
-# ALL-NEXT:     %2:_(s32) = G_ZEXT %1(s1)
-# ALL-NEXT:     %eax = COPY %2(s32)
-# ALL-NEXT:     RET 0, implicit %eax
 body:             |
   bb.1 (%ir-block.0):
     liveins: %edi
 
+    ; X32-LABEL: name: test_zext_i1
+    ; X32: [[COPY:%[0-9]+]]:_(s8) = COPY %dil
+    ; X32: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+    ; X32: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[COPY]](s8)
+    ; X32: [[AND:%[0-9]+]]:_(s32) = G_AND [[ANYEXT]], [[C]]
+    ; X32: %eax = COPY [[AND]](s32)
+    ; X32: RET 0, implicit %eax
+    ; X64-LABEL: name: test_zext_i1
+    ; X64: [[COPY:%[0-9]+]]:_(s8) = COPY %dil
+    ; X64: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
+    ; X64: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[COPY]](s8)
+    ; X64: [[AND:%[0-9]+]]:_(s32) = G_AND [[ANYEXT]], [[C]]
+    ; X64: %eax = COPY [[AND]](s32)
+    ; X64: RET 0, implicit %eax
     %0(s8) = COPY %dil
     %1(s1) = G_TRUNC %0(s8)
     %2(s32) = G_ZEXT %1(s1)
     %eax = COPY %2(s32)
     RET 0, implicit %eax
 
 ...
 ---
 name:            test_zext_i8toi16
-# ALL-LABEL: name:  test_zext_i8toi16
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _, preferred-register: '' }
   - { id: 1, class: _, preferred-register: '' }
-# ALL:          %0:_(s8) = COPY %dil
-# ALL-NEXT:     %1:_(s16) = G_ZEXT %0(s8)
-# ALL-NEXT:     %ax = COPY %1(s16)
-# ALL-NEXT:     RET 0, implicit %ax
 body:             |
   bb.1 (%ir-block.0):
     liveins: %edi
 
+    ; X32-LABEL: name: test_zext_i8toi16
+    ; X32: [[COPY:%[0-9]+]]:_(s8) = COPY %dil
+    ; X32: [[ZEXT:%[0-9]+]]:_(s16) = G_ZEXT [[COPY]](s8)
+    ; X32: %ax = COPY [[ZEXT]](s16)
+    ; X32: RET 0, implicit %ax
+    ; X64-LABEL: name: test_zext_i8toi16
+    ; X64: [[COPY:%[0-9]+]]:_(s8) = COPY %dil
+    ; X64: [[ZEXT:%[0-9]+]]:_(s16) = G_ZEXT [[COPY]](s8)
+    ; X64: %ax = COPY [[ZEXT]](s16)
+    ; X64: RET 0, implicit %ax
     %0(s8) = COPY %dil
     %1(s16) = G_ZEXT %0(s8)
     %ax = COPY %1(s16)
     RET 0, implicit %ax
 
 ...
 ---
 name:            test_zext_i8
-# ALL-LABEL: name:  test_zext_i8
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
-# ALL:          %0:_(s8) = COPY %dil
-# ALL-NEXT:     %1:_(s32) = G_ZEXT %0(s8)
-# ALL-NEXT:     %eax = COPY %1(s32)
-# ALL-NEXT:     RET 0, implicit %eax
 body:             |
   bb.1 (%ir-block.0):
     liveins: %edi
 
+    ; X32-LABEL: name: test_zext_i8
+    ; X32: [[COPY:%[0-9]+]]:_(s8) = COPY %dil
+    ; X32: [[ZEXT:%[0-9]+]]:_(s32) = G_ZEXT [[COPY]](s8)
+    ; X32: %eax = COPY [[ZEXT]](s32)
+    ; X32: RET 0, implicit %eax
+    ; X64-LABEL: name: test_zext_i8
+    ; X64: [[COPY:%[0-9]+]]:_(s8) = COPY %dil
+    ; X64: [[ZEXT:%[0-9]+]]:_(s32) = G_ZEXT [[COPY]](s8)
+    ; X64: %eax = COPY [[ZEXT]](s32)
+    ; X64: RET 0, implicit %eax
     %0(s8) = COPY %dil
     %1(s32) = G_ZEXT %0(s8)
     %eax = COPY %1(s32)
     RET 0, implicit %eax
 
 ...
 ---
 name:            test_zext_i16
-# ALL-LABEL: name:  test_zext_i16
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
-# ALL:          %0:_(s16) = COPY %di
-# ALL-NEXT:     %1:_(s32) = G_ZEXT %0(s16)
-# ALL-NEXT:     %eax = COPY %1(s32)
-# ALL-NEXT:     RET 0, implicit %eax
 body:             |
   bb.1 (%ir-block.0):
     liveins: %edi
 
+    ; X32-LABEL: name: test_zext_i16
+    ; X32: [[COPY:%[0-9]+]]:_(s16) = COPY %di
+    ; X32: [[ZEXT:%[0-9]+]]:_(s32) = G_ZEXT [[COPY]](s16)
+    ; X32: %eax = COPY [[ZEXT]](s32)
+    ; X32: RET 0, implicit %eax
+    ; X64-LABEL: name: test_zext_i16
+    ; X64: [[COPY:%[0-9]+]]:_(s16) = COPY %di
+    ; X64: [[ZEXT:%[0-9]+]]:_(s32) = G_ZEXT [[COPY]](s16)
+    ; X64: %eax = COPY [[ZEXT]](s32)
+    ; X64: RET 0, implicit %eax
     %0(s16) = COPY %di
     %1(s32) = G_ZEXT %0(s16)
     %eax = COPY %1(s32)
     RET 0, implicit %eax
 
 ...
 ---
 name:            test_sext_i1toi8
-# ALL-LABEL: name:  test_sext_i1toi8
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _, preferred-register: '' }
   - { id: 1, class: _, preferred-register: '' }
-# ALL:          %0:_(s1) = COPY %edi
-# ALL-NEXT:     %1:_(s8) = G_SEXT %0(s1)
-# ALL-NEXT:     %al = COPY %1(s8)
-# ALL-NEXT:     RET 0, implicit %al
 body:             |
   bb.1 (%ir-block.0):
     liveins: %edi
 
-    %0(s1) = COPY %edi
+    ; X32-LABEL: name: test_sext_i1toi8
+    ; X32: [[DEF:%[0-9]+]]:_(s1) = G_IMPLICIT_DEF
+    ; X32: [[SEXT:%[0-9]+]]:_(s8) = G_SEXT [[DEF]](s1)
+    ; X32: %al = COPY [[SEXT]](s8)
+    ; X32: RET 0, implicit %al
+    ; X64-LABEL: name: test_sext_i1toi8
+    ; X64: [[DEF:%[0-9]+]]:_(s1) = G_IMPLICIT_DEF
+    ; X64: [[SEXT:%[0-9]+]]:_(s8) = G_SEXT [[DEF]](s1)
+    ; X64: %al = COPY [[SEXT]](s8)
+    ; X64: RET 0, implicit %al
+    %0(s1) = G_IMPLICIT_DEF
     %1(s8) = G_SEXT %0(s1)
     %al = COPY %1(s8)
     RET 0, implicit %al
 
 ...
 ---
 name:            test_sext_i1toi16
-# ALL-LABEL: name:  test_sext_i1toi16
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _, preferred-register: '' }
   - { id: 1, class: _, preferred-register: '' }
-# ALL:          %0:_(s1) = COPY %edi
-# ALL-NEXT:     %1:_(s16) = G_SEXT %0(s1)
-# ALL-NEXT:     %ax = COPY %1(s16)
-# ALL-NEXT:     RET 0, implicit %ax
 body:             |
   bb.1 (%ir-block.0):
     liveins: %edi
 
-    %0(s1) = COPY %edi
+    ; X32-LABEL: name: test_sext_i1toi16
+    ; X32: [[DEF:%[0-9]+]]:_(s1) = G_IMPLICIT_DEF
+    ; X32: [[SEXT:%[0-9]+]]:_(s16) = G_SEXT [[DEF]](s1)
+    ; X32: %ax = COPY [[SEXT]](s16)
+    ; X32: RET 0, implicit %ax
+    ; X64-LABEL: name: test_sext_i1toi16
+    ; X64: [[DEF:%[0-9]+]]:_(s1) = G_IMPLICIT_DEF
+    ; X64: [[SEXT:%[0-9]+]]:_(s16) = G_SEXT [[DEF]](s1)
+    ; X64: %ax = COPY [[SEXT]](s16)
+    ; X64: RET 0, implicit %ax
+    %0(s1) = G_IMPLICIT_DEF
     %1(s16) = G_SEXT %0(s1)
     %ax = COPY %1(s16)
     RET 0, implicit %ax
 
 ...
 ---
 name:            test_sext_i1
-# ALL-LABEL: name:  test_sext_i1
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
-# ALL:          %0:_(s8) = COPY %dil
-# ALL-NEXT:     %1:_(s1) = G_TRUNC %0(s8)
-# ALL-NEXT:     %2:_(s32) = G_SEXT %1(s1)
-# ALL-NEXT:     %eax = COPY %2(s32)
-# ALL-NEXT:     RET 0, implicit %eax
 body:             |
   bb.1 (%ir-block.0):
     liveins: %edi
 
-    %0(s8) = COPY %dil
-    %1(s1) = G_TRUNC %0(s8)
-    %2(s32) = G_SEXT %1(s1)
+    ; X32-LABEL: name: test_sext_i1
+    ; X32: [[DEF:%[0-9]+]]:_(s1) = G_IMPLICIT_DEF
+    ; X32: [[SEXT:%[0-9]+]]:_(s32) = G_SEXT [[DEF]](s1)
+    ; X32: %eax = COPY [[SEXT]](s32)
+    ; X32: RET 0, implicit %eax
+    ; X64-LABEL: name: test_sext_i1
+    ; X64: [[DEF:%[0-9]+]]:_(s1) = G_IMPLICIT_DEF
+    ; X64: [[SEXT:%[0-9]+]]:_(s32) = G_SEXT [[DEF]](s1)
+    ; X64: %eax = COPY [[SEXT]](s32)
+    ; X64: RET 0, implicit %eax
+    %0(s1) = G_IMPLICIT_DEF
+    %2(s32) = G_SEXT %0(s1)
     %eax = COPY %2(s32)
     RET 0, implicit %eax
 
 ...
 ---
 name:            test_sext_i8toi16
-# ALL-LABEL: name:  test_sext_i8toi16
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _, preferred-register: '' }
   - { id: 1, class: _, preferred-register: '' }
-# ALL:          %0:_(s8) = COPY %dil
-# ALL-NEXT:     %1:_(s16) = G_SEXT %0(s8)
-# ALL-NEXT:     %ax = COPY %1(s16)
-# ALL-NEXT:     RET 0, implicit %ax
 body:             |
   bb.1 (%ir-block.0):
     liveins: %edi
 
+    ; X32-LABEL: name: test_sext_i8toi16
+    ; X32: [[COPY:%[0-9]+]]:_(s8) = COPY %dil
+    ; X32: [[SEXT:%[0-9]+]]:_(s16) = G_SEXT [[COPY]](s8)
+    ; X32: %ax = COPY [[SEXT]](s16)
+    ; X32: RET 0, implicit %ax
+    ; X64-LABEL: name: test_sext_i8toi16
+    ; X64: [[COPY:%[0-9]+]]:_(s8) = COPY %dil
+    ; X64: [[SEXT:%[0-9]+]]:_(s16) = G_SEXT [[COPY]](s8)
+    ; X64: %ax = COPY [[SEXT]](s16)
+    ; X64: RET 0, implicit %ax
     %0(s8) = COPY %dil
     %1(s16) = G_SEXT %0(s8)
     %ax = COPY %1(s16)
     RET 0, implicit %ax
 
 ...
 ---
 name:            test_sext_i8
-# ALL-LABEL: name:  test_sext_i8
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
-# ALL:          %0:_(s8) = COPY %dil
-# ALL-NEXT:     %1:_(s32) = G_SEXT %0(s8)
-# ALL-NEXT:     %eax = COPY %1(s32)
-# ALL-NEXT:     RET 0, implicit %eax
 body:             |
   bb.1 (%ir-block.0):
     liveins: %edi
 
+    ; X32-LABEL: name: test_sext_i8
+    ; X32: [[COPY:%[0-9]+]]:_(s8) = COPY %dil
+    ; X32: [[SEXT:%[0-9]+]]:_(s32) = G_SEXT [[COPY]](s8)
+    ; X32: %eax = COPY [[SEXT]](s32)
+    ; X32: RET 0, implicit %eax
+    ; X64-LABEL: name: test_sext_i8
+    ; X64: [[COPY:%[0-9]+]]:_(s8) = COPY %dil
+    ; X64: [[SEXT:%[0-9]+]]:_(s32) = G_SEXT [[COPY]](s8)
+    ; X64: %eax = COPY [[SEXT]](s32)
+    ; X64: RET 0, implicit %eax
     %0(s8) = COPY %dil
     %1(s32) = G_SEXT %0(s8)
     %eax = COPY %1(s32)
     RET 0, implicit %eax
 
 ...
 ---
 name:            test_sext_i16
-# ALL-LABEL: name:  test_sext_i16
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
-# ALL:          %0:_(s16) = COPY %di
-# ALL-NEXT:     %1:_(s32) = G_SEXT %0(s16)
-# ALL-NEXT:     %eax = COPY %1(s32)
-# ALL-NEXT:     RET 0, implicit %eax
 body:             |
   bb.1 (%ir-block.0):
     liveins: %edi
 
+    ; X32-LABEL: name: test_sext_i16
+    ; X32: [[COPY:%[0-9]+]]:_(s16) = COPY %di
+    ; X32: [[SEXT:%[0-9]+]]:_(s32) = G_SEXT [[COPY]](s16)
+    ; X32: %eax = COPY [[SEXT]](s32)
+    ; X32: RET 0, implicit %eax
+    ; X64-LABEL: name: test_sext_i16
+    ; X64: [[COPY:%[0-9]+]]:_(s16) = COPY %di
+    ; X64: [[SEXT:%[0-9]+]]:_(s32) = G_SEXT [[COPY]](s16)
+    ; X64: %eax = COPY [[SEXT]](s32)
+    ; X64: RET 0, implicit %eax
     %0(s16) = COPY %di
     %1(s32) = G_SEXT %0(s16)
     %eax = COPY %1(s32)
     RET 0, implicit %eax
 
 ...
 ---
 name:            test_anyext_i1toi8
-# ALL-LABEL: name:  test_anyext_i1toi8
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _, preferred-register: '' }
   - { id: 1, class: _, preferred-register: '' }
-# ALL:          %0:_(s1) = COPY %edi
-# ALL-NEXT:     %1:_(s8) = G_ANYEXT %0(s1)
-# ALL-NEXT:     %al = COPY %1(s8)
-# ALL-NEXT:     RET 0, implicit %al
 body:             |
   bb.1 (%ir-block.0):
     liveins: %edi
 
+    ; X32-LABEL: name: test_anyext_i1toi8
+    ; X32: [[COPY:%[0-9]+]]:_(s1) = COPY %edi
+    ; X32: [[ANYEXT:%[0-9]+]]:_(s8) = G_ANYEXT [[COPY]](s1)
+    ; X32: %al = COPY [[ANYEXT]](s8)
+    ; X32: RET 0, implicit %al
+    ; X64-LABEL: name: test_anyext_i1toi8
+    ; X64: [[COPY:%[0-9]+]]:_(s1) = COPY %edi
+    ; X64: [[ANYEXT:%[0-9]+]]:_(s8) = G_ANYEXT [[COPY]](s1)
+    ; X64: %al = COPY [[ANYEXT]](s8)
+    ; X64: RET 0, implicit %al
     %0(s1) = COPY %edi
     %1(s8) = G_ANYEXT %0(s1)
     %al = COPY %1(s8)
     RET 0, implicit %al
 
 ...
 ---
 name:            test_anyext_i1toi16
-# ALL-LABEL: name:  test_anyext_i1toi16
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _, preferred-register: '' }
   - { id: 1, class: _, preferred-register: '' }
-# ALL:          %0:_(s1) = COPY %edi
-# ALL-NEXT:     %1:_(s16) = G_ANYEXT %0(s1)
-# ALL-NEXT:     %ax = COPY %1(s16)
-# ALL-NEXT:     RET 0, implicit %ax
 body:             |
   bb.1 (%ir-block.0):
     liveins: %edi
 
+    ; X32-LABEL: name: test_anyext_i1toi16
+    ; X32: [[COPY:%[0-9]+]]:_(s1) = COPY %edi
+    ; X32: [[ANYEXT:%[0-9]+]]:_(s16) = G_ANYEXT [[COPY]](s1)
+    ; X32: %ax = COPY [[ANYEXT]](s16)
+    ; X32: RET 0, implicit %ax
+    ; X64-LABEL: name: test_anyext_i1toi16
+    ; X64: [[COPY:%[0-9]+]]:_(s1) = COPY %edi
+    ; X64: [[ANYEXT:%[0-9]+]]:_(s16) = G_ANYEXT [[COPY]](s1)
+    ; X64: %ax = COPY [[ANYEXT]](s16)
+    ; X64: RET 0, implicit %ax
     %0(s1) = COPY %edi
     %1(s16) = G_ANYEXT %0(s1)
     %ax = COPY %1(s16)
     RET 0, implicit %ax
 
 ...
 ---
 name:            test_anyext_i1
-# ALL-LABEL: name:  test_anyext_i1
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
-# ALL:          %0:_(s8) = COPY %dil
-# ALL-NEXT:     %1:_(s1) = G_TRUNC %0(s8)
-# ALL-NEXT:     %2:_(s32) = G_ANYEXT %1(s1)
-# ALL-NEXT:     %eax = COPY %2(s32)
-# ALL-NEXT:     RET 0, implicit %eax
 body:             |
   bb.1 (%ir-block.0):
     liveins: %edi
 
+    ; X32-LABEL: name: test_anyext_i1
+    ; X32: [[COPY:%[0-9]+]]:_(s8) = COPY %dil
+    ; X32: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[COPY]](s8)
+    ; X32: %eax = COPY [[ANYEXT]](s32)
+    ; X32: RET 0, implicit %eax
+    ; X64-LABEL: name: test_anyext_i1
+    ; X64: [[COPY:%[0-9]+]]:_(s8) = COPY %dil
+    ; X64: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[COPY]](s8)
+    ; X64: %eax = COPY [[ANYEXT]](s32)
+    ; X64: RET 0, implicit %eax
     %0(s8) = COPY %dil
     %1(s1) = G_TRUNC %0(s8)
     %2(s32) = G_ANYEXT %1(s1)
     %eax = COPY %2(s32)
     RET 0, implicit %eax
 
 ...
 ---
 name:            test_anyext_i8toi16
-# ALL-LABEL: name:  test_anyext_i8toi16
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _, preferred-register: '' }
   - { id: 1, class: _, preferred-register: '' }
-# ALL:          %0:_(s8) = COPY %dil
-# ALL-NEXT:     %1:_(s16) = G_ANYEXT %0(s8)
-# ALL-NEXT:     %ax = COPY %1(s16)
-# ALL-NEXT:     RET 0, implicit %ax
 body:             |
   bb.1 (%ir-block.0):
     liveins: %edi
 
+    ; X32-LABEL: name: test_anyext_i8toi16
+    ; X32: [[COPY:%[0-9]+]]:_(s8) = COPY %dil
+    ; X32: [[ANYEXT:%[0-9]+]]:_(s16) = G_ANYEXT [[COPY]](s8)
+    ; X32: %ax = COPY [[ANYEXT]](s16)
+    ; X32: RET 0, implicit %ax
+    ; X64-LABEL: name: test_anyext_i8toi16
+    ; X64: [[COPY:%[0-9]+]]:_(s8) = COPY %dil
+    ; X64: [[ANYEXT:%[0-9]+]]:_(s16) = G_ANYEXT [[COPY]](s8)
+    ; X64: %ax = COPY [[ANYEXT]](s16)
+    ; X64: RET 0, implicit %ax
     %0(s8) = COPY %dil
     %1(s16) = G_ANYEXT %0(s8)
     %ax = COPY %1(s16)
     RET 0, implicit %ax
 
 ...
 ---
 name:            test_anyext_i8
-# ALL-LABEL: name:  test_anyext_i8
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
-# ALL:          %0:_(s8) = COPY %dil
-# ALL-NEXT:     %1:_(s32) = G_ANYEXT %0(s8)
-# ALL-NEXT:     %eax = COPY %1(s32)
-# ALL-NEXT:     RET 0, implicit %eax
 body:             |
   bb.1 (%ir-block.0):
     liveins: %edi
 
+    ; X32-LABEL: name: test_anyext_i8
+    ; X32: [[COPY:%[0-9]+]]:_(s8) = COPY %dil
+    ; X32: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[COPY]](s8)
+    ; X32: %eax = COPY [[ANYEXT]](s32)
+    ; X32: RET 0, implicit %eax
+    ; X64-LABEL: name: test_anyext_i8
+    ; X64: [[COPY:%[0-9]+]]:_(s8) = COPY %dil
+    ; X64: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[COPY]](s8)
+    ; X64: %eax = COPY [[ANYEXT]](s32)
+    ; X64: RET 0, implicit %eax
     %0(s8) = COPY %dil
     %1(s32) = G_ANYEXT %0(s8)
     %eax = COPY %1(s32)
     RET 0, implicit %eax
 
 ...
 ---
 name:            test_anyext_i16
-# ALL-LABEL: name:  test_anyext_i16
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
-# ALL:          %0:_(s16) = COPY %di
-# ALL-NEXT:     %1:_(s32) = G_ANYEXT %0(s16)
-# ALL-NEXT:     %eax = COPY %1(s32)
-# ALL-NEXT:     RET 0, implicit %eax
 body:             |
   bb.1 (%ir-block.0):
     liveins: %edi
 
+    ; X32-LABEL: name: test_anyext_i16
+    ; X32: [[COPY:%[0-9]+]]:_(s16) = COPY %di
+    ; X32: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[COPY]](s16)
+    ; X32: %eax = COPY [[ANYEXT]](s32)
+    ; X32: RET 0, implicit %eax
+    ; X64-LABEL: name: test_anyext_i16
+    ; X64: [[COPY:%[0-9]+]]:_(s16) = COPY %di
+    ; X64: [[ANYEXT:%[0-9]+]]:_(s32) = G_ANYEXT [[COPY]](s16)
+    ; X64: %eax = COPY [[ANYEXT]](s32)
+    ; X64: RET 0, implicit %eax
     %0(s16) = COPY %di
     %1(s32) = G_ANYEXT %0(s16)
     %eax = COPY %1(s32)
     RET 0, implicit %eax
 
 ...

test/CodeGen/X86/GlobalISel/legalize-gep.mir

 # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -mtriple=x86_64-linux-gnu -global-isel -run-pass=legalizer %s -o - | FileCheck %s
 
 --- |
-  define void @test_gep_i8() {
+  define void @test_gep_i8(i8* %addr) {
     %arrayidx = getelementptr i32, i32* undef, i8 5
     ret void
   }
 
-  define void @test_gep_i16() {
+  define void @test_gep_i16(i8* %addr) {
     %arrayidx = getelementptr i32, i32* undef, i16 5
     ret void
   }
 
-  define void @test_gep_i32() {
+  define void @test_gep_i32(i8* %addr) {
     %arrayidx = getelementptr i32, i32* undef, i32 5
     ret void
   }
 
-  define void @test_gep_i64() {
+  define void @test_gep_i64(i8* %addr) {
     %arrayidx = getelementptr i32, i32* undef, i64 5
     ret void
   }
 ...
 ---
 name:            test_gep_i8
 legalized:       false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
 body:             |
   bb.1 (%ir-block.0):
     ; CHECK-LABEL: name: test_gep_i8
     ; CHECK: [[DEF:%[0-9]+]]:_(p0) = IMPLICIT_DEF
     ; CHECK: [[C:%[0-9]+]]:_(s8) = G_CONSTANT i8 20
     ; CHECK: [[SEXT:%[0-9]+]]:_(s32) = G_SEXT [[C]](s8)
     ; CHECK: [[GEP:%[0-9]+]]:_(p0) = G_GEP [[DEF]], [[SEXT]](s32)
+    ; CHECK: G_STORE [[GEP]](p0), [[DEF]](p0) :: (store 1 into %ir.addr)
     ; CHECK: RET 0
     %0(p0) = IMPLICIT_DEF
     %1(s8) = G_CONSTANT i8 20
     %2(p0) = G_GEP %0, %1(s8)
+    G_STORE %2, %0 :: (store 1 into %ir.addr)
     RET 0
 ...
 ---
 name:            test_gep_i16
 legalized:       false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
 body:             |
   bb.1 (%ir-block.0):
     ; CHECK-LABEL: name: test_gep_i16
     ; CHECK: [[DEF:%[0-9]+]]:_(p0) = IMPLICIT_DEF
     ; CHECK: [[C:%[0-9]+]]:_(s16) = G_CONSTANT i16 20
     ; CHECK: [[SEXT:%[0-9]+]]:_(s32) = G_SEXT [[C]](s16)
     ; CHECK: [[GEP:%[0-9]+]]:_(p0) = G_GEP [[DEF]], [[SEXT]](s32)
+    ; CHECK: G_STORE [[GEP]](p0), [[DEF]](p0) :: (store 1 into %ir.addr)
     ; CHECK: RET 0
     %0(p0) = IMPLICIT_DEF
     %1(s16) = G_CONSTANT i16 20
     %2(p0) = G_GEP %0, %1(s16)
+    G_STORE %2, %0 :: (store 1 into %ir.addr)
     RET 0
 ...
 ---
 name:            test_gep_i32
 legalized:       false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
 body:             |
   bb.1 (%ir-block.0):
     ; CHECK-LABEL: name: test_gep_i32
     ; CHECK: [[DEF:%[0-9]+]]:_(p0) = IMPLICIT_DEF
     ; CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 20
     ; CHECK: [[GEP:%[0-9]+]]:_(p0) = G_GEP [[DEF]], [[C]](s32)
+    ; CHECK: G_STORE [[GEP]](p0), [[DEF]](p0) :: (store 1 into %ir.addr)
     ; CHECK: RET 0
     %0(p0) = IMPLICIT_DEF
     %1(s32) = G_CONSTANT i32 20
     %2(p0) = G_GEP %0, %1(s32)
+    G_STORE %2, %0 :: (store 1 into %ir.addr)
     RET 0
 ...
 ---
 name:            test_gep_i64
 legalized:       false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
 body:             |
   bb.1 (%ir-block.0):
     ; CHECK-LABEL: name: test_gep_i64
     ; CHECK: [[DEF:%[0-9]+]]:_(p0) = IMPLICIT_DEF
     ; CHECK: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 20
     ; CHECK: [[GEP:%[0-9]+]]:_(p0) = G_GEP [[DEF]], [[C]](s64)
+    ; CHECK: G_STORE [[GEP]](p0), [[DEF]](p0) :: (store 1 into %ir.addr)
     ; CHECK: RET 0
     %0(p0) = IMPLICIT_DEF
     %1(s64) = G_CONSTANT i64 20
     %2(p0) = G_GEP %0, %1(s64)
+    G_STORE %2, %0 :: (store 1 into %ir.addr)
     RET 0
 ...

test/CodeGen/X86/GlobalISel/legalize-memop-scalar.mir

+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -mtriple=x86_64-linux-gnu -global-isel -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X64
 # RUN: llc -mtriple=i386-linux-gnu   -global-isel -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X32
 
 --- |
   define void @test_memop_s8tos32() {
     ret void
   }
 
   define void @test_memop_s64() {
     ret void
   }
 ...
 ---
 name:            test_memop_s8tos32
-# ALL-LABEL: name:  test_memop_s8tos32
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _, preferred-register: '' }
   - { id: 1, class: _, preferred-register: '' }
   - { id: 2, class: _, preferred-register: '' }
   - { id: 3, class: _, preferred-register: '' }
   - { id: 4, class: _, preferred-register: '' }
   - { id: 5, class: _, preferred-register: '' }
   - { id: 6, class: _, preferred-register: '' }
   - { id: 7, class: _, preferred-register: '' }
   - { id: 8, class: _, preferred-register: '' }
   - { id: 9, class: _, preferred-register: '' }
   - { id: 10, class: _, preferred-register: '' }
-# ALL:          %0:_(p0) = IMPLICIT_DEF
-# ALL-NEXT:     %11:_(s8) = G_LOAD %0(p0) :: (load 1)
-# ALL-NEXT:     %9:_(s1) = G_TRUNC %11(s8)
-# ALL-NEXT:     %1:_(s8) = G_LOAD %0(p0) :: (load 1)
-# ALL-NEXT:     %2:_(s16) = G_LOAD %0(p0) :: (load 2)
-# ALL-NEXT:     %3:_(s32) = G_LOAD %0(p0) :: (load 4)
-# ALL-NEXT:     %4:_(p0) = G_LOAD %0(p0) :: (load 8)
-# ALL-NEXT:     %10:_(s1) = IMPLICIT_DEF
-# ALL-NEXT:     %12:_(s8) = G_ZEXT %10(s1)
-# ALL-NEXT:     G_STORE %12(s8), %0(p0) :: (store 1)
-# ALL-NEXT:     %5:_(s8) = IMPLICIT_DEF
-# ALL-NEXT:     G_STORE %5(s8), %0(p0) :: (store 1)
-# ALL-NEXT:     %6:_(s16) = IMPLICIT_DEF
-# ALL-NEXT:     G_STORE %6(s16), %0(p0) :: (store 2)
-# ALL-NEXT:     %7:_(s32) = IMPLICIT_DEF
-# ALL-NEXT:     G_STORE %7(s32), %0(p0) :: (store 4)
-# ALL-NEXT:     %8:_(p0) = IMPLICIT_DEF
-# ALL-NEXT:     G_STORE %8(p0), %0(p0) :: (store 8)
 body:             |
   bb.1 (%ir-block.0):
     liveins: %rdi
 
+    ; X64-LABEL: name: test_memop_s8tos32
+    ; X64: [[DEF:%[0-9]+]]:_(p0) = IMPLICIT_DEF
+    ; X64: [[LOAD:%[0-9]+]]:_(s8) = G_LOAD [[DEF]](p0) :: (load 1)
+    ; X64: [[LOAD1:%[0-9]+]]:_(s8) = G_LOAD [[DEF]](p0) :: (load 1)
+    ; X64: [[LOAD2:%[0-9]+]]:_(s16) = G_LOAD [[DEF]](p0) :: (load 2)
+    ; X64: [[LOAD3:%[0-9]+]]:_(s32) = G_LOAD [[DEF]](p0) :: (load 4)
+    ; X64: [[LOAD4:%[0-9]+]]:_(p0) = G_LOAD [[DEF]](p0) :: (load 8)
+    ; X64: [[C:%[0-9]+]]:_(s8) = G_CONSTANT i8 1
+    ; X64: [[COPY:%[0-9]+]]:_(s8) = COPY [[LOAD]](s8)
+    ; X64: [[AND:%[0-9]+]]:_(s8) = G_AND [[COPY]], [[C]]
+    ; X64: G_STORE [[AND]](s8), [[DEF]](p0) :: (store 1)
+    ; X64: G_STORE [[LOAD1]](s8), [[DEF]](p0) :: (store 1)
+    ; X64: G_STORE [[LOAD2]](s16), [[DEF]](p0) :: (store 2)
+    ; X64: G_STORE [[LOAD3]](s32), [[DEF]](p0) :: (store 4)
+    ; X64: G_STORE [[LOAD4]](p0), [[DEF]](p0) :: (store 8)
+    ; X32-LABEL: name: test_memop_s8tos32
+    ; X32: [[DEF:%[0-9]+]]:_(p0) = IMPLICIT_DEF
+    ; X32: [[LOAD:%[0-9]+]]:_(s8) = G_LOAD [[DEF]](p0) :: (load 1)
+    ; X32: [[LOAD1:%[0-9]+]]:_(s8) = G_LOAD [[DEF]](p0) :: (load 1)
+    ; X32: [[LOAD2:%[0-9]+]]:_(s16) = G_LOAD [[DEF]](p0) :: (load 2)
+    ; X32: [[LOAD3:%[0-9]+]]:_(s32) = G_LOAD [[DEF]](p0) :: (load 4)
+    ; X32: [[LOAD4:%[0-9]+]]:_(p0) = G_LOAD [[DEF]](p0) :: (load 8)
+    ; X32: [[C:%[0-9]+]]:_(s8) = G_CONSTANT i8 1
+    ; X32: [[COPY:%[0-9]+]]:_(s8) = COPY [[LOAD]](s8)
+    ; X32: [[AND:%[0-9]+]]:_(s8) = G_AND [[COPY]], [[C]]
+    ; X32: G_STORE [[AND]](s8), [[DEF]](p0) :: (store 1)
+    ; X32: G_STORE [[LOAD1]](s8), [[DEF]](p0) :: (store 1)
+    ; X32: G_STORE [[LOAD2]](s16), [[DEF]](p0) :: (store 2)
+    ; X32: G_STORE [[LOAD3]](s32), [[DEF]](p0) :: (store 4)
+    ; X32: G_STORE [[LOAD4]](p0), [[DEF]](p0) :: (store 8)
     %0(p0) = IMPLICIT_DEF
     %9(s1) = G_LOAD %0(p0) :: (load 1)
     %1(s8) = G_LOAD %0(p0) :: (load 1)
     %2(s16) = G_LOAD %0(p0) :: (load 2)
     %3(s32) = G_LOAD %0(p0) :: (load 4)
     %4(p0) = G_LOAD %0(p0) :: (load 8)
 
-    %10(s1) = IMPLICIT_DEF
-    G_STORE %10, %0 :: (store 1)
-    %5(s8) = IMPLICIT_DEF
-    G_STORE %5, %0 :: (store 1)
-    %6(s16) = IMPLICIT_DEF
-    G_STORE %6, %0 :: (store 2)
-    %7(s32) = IMPLICIT_DEF
-    G_STORE %7, %0 :: (store 4)
-    %8(p0) = IMPLICIT_DEF
-    G_STORE %8, %0 :: (store 8)
+    G_STORE %9, %0 :: (store 1)
+    G_STORE %1, %0 :: (store 1)
+    G_STORE %2, %0 :: (store 2)
+    G_STORE %3, %0 :: (store 4)
+    G_STORE %4, %0 :: (store 8)
 ...
 ---
 name:            test_memop_s64
-# ALL-LABEL: name:  test_memop_s64
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _, preferred-register: '' }
   - { id: 1, class: _, preferred-register: '' }
   - { id: 2, class: _, preferred-register: '' }
 liveins:
-# X64:          %0:_(p0) = IMPLICIT_DEF
-# X64-NEXT:     %1:_(s64) = G_LOAD %0(p0) :: (load 8)
-# X64-NEXT:     %2:_(s64) = IMPLICIT_DEF
-# X64-NEXT:     G_STORE %2(s64), %0(p0) :: (store 8)
 #
-# X32:          %0:_(p0) = IMPLICIT_DEF
-# X32-NEXT:     %3:_(s32) = G_LOAD %0(p0) :: (load 8)
-# X32-NEXT:     %6:_(s32) = G_CONSTANT i32 4
-# X32-NEXT:     %5:_(p0) = G_GEP %0, %6(s32)
-# X32-NEXT:     %4:_(s32) = G_LOAD %5(p0) :: (load 8)
-# X32-NEXT:     %1:_(s64) = G_MERGE_VALUES %3(s32), %4(s32)
-# X32-NEXT:     %2:_(s64) = IMPLICIT_DEF
-# X32-NEXT:     %7:_(s32), %8:_(s32) = G_UNMERGE_VALUES %2(s64)
-# X32-NEXT:     G_STORE %7(s32), %0(p0) :: (store 8)
-# X32-NEXT:     %10:_(s32) = G_CONSTANT i32 4
-# X32-NEXT:     %9:_(p0) = G_GEP %0, %10(s32)
-# X32-NEXT:     G_STORE %8(s32), %9(p0) :: (store 8)
 body:             |
   bb.1 (%ir-block.0):
     liveins: %rdi
 
+    ; X64-LABEL: name: test_memop_s64
+    ; X64: [[DEF:%[0-9]+]]:_(p0) = IMPLICIT_DEF
+    ; X64: [[LOAD:%[0-9]+]]:_(s64) = G_LOAD [[DEF]](p0) :: (load 8)
+    ; X64: G_STORE [[LOAD]](s64), [[DEF]](p0) :: (store 8)
+    ; X32-LABEL: name: test_memop_s64
+    ; X32: [[DEF:%[0-9]+]]:_(p0) = IMPLICIT_DEF
+    ; X32: [[LOAD:%[0-9]+]]:_(s32) = G_LOAD [[DEF]](p0) :: (load 8)
+    ; X32: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 4
+    ; X32: [[GEP:%[0-9]+]]:_(p0) = G_GEP [[DEF]], [[C]](s32)
+    ; X32: [[LOAD1:%[0-9]+]]:_(s32) = G_LOAD [[GEP]](p0) :: (load 8)
+    ; X32: G_STORE [[LOAD]](s32), [[DEF]](p0) :: (store 8)
+    ; X32: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 4
+    ; X32: [[GEP1:%[0-9]+]]:_(p0) = G_GEP [[DEF]], [[C1]](s32)
+    ; X32: G_STORE [[LOAD1]](s32), [[GEP1]](p0) :: (store 8)
     %0(p0) = IMPLICIT_DEF
     %1(s64) = G_LOAD %0(p0) :: (load 8)
 
-    %2(s64) = IMPLICIT_DEF
-    G_STORE %2, %0 :: (store 8)
+    G_STORE %1, %0 :: (store 8)
 
 ...

test/CodeGen/X86/GlobalISel/legalize-mul-scalar.mir

+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -mtriple=x86_64-linux-gnu -global-isel -run-pass=legalizer %s -o - | FileCheck %s
 
 --- |
   define void @test_mul_i1() { ret void}
 
   define i16 @test_mul_i16(i16 %arg1, i16 %arg2) {
     %ret = mul i16 %arg1, %arg2
     ret i16 %ret
   }
 
   define i32 @test_mul_i32(i32 %arg1, i32 %arg2) {
     %ret = mul i32 %arg1, %arg2
     ret i32 %ret
   }
 
   define i64 @test_mul_i64(i64 %arg1, i64 %arg2) {
     %ret = mul i64 %arg1, %arg2
     ret i64 %ret
   }
 
 ...
 ---
 name:            test_mul_i1
-# CHECK-LABEL: name:  test_mul_i1
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _, preferred-register: '' }
   - { id: 1, class: _, preferred-register: '' }
   - { id: 2, class: _, preferred-register: '' }
-# CHECK:          %0:_(s32) = COPY %edx
-# CHECK-NEXT:     %3:_(s8) = G_TRUNC %0(s32)
-# CHECK-NEXT:     %4:_(s8) = G_TRUNC %0(s32)
-# CHECK-NEXT:     %5:_(s8) = G_MUL %3, %4
-# CHECK-NEXT:     %2:_(s1) = G_TRUNC %5(s8)
-# CHECK-NEXT:     RET 0
 body:             |
   bb.1 (%ir-block.0):
 
+    ; CHECK-LABEL: name: test_mul_i1
+    ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %edx
+    ; CHECK: [[TRUNC:%[0-9]+]]:_(s8) = G_TRUNC [[COPY]](s32)
+    ; CHECK: [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[COPY]](s32)
+    ; CHECK: [[MUL:%[0-9]+]]:_(s8) = G_MUL [[TRUNC]], [[TRUNC1]]
+    ; CHECK: [[DEF:%[0-9]+]]:_(p0) = G_IMPLICIT_DEF
+    ; CHECK: [[C:%[0-9]+]]:_(s8) = G_CONSTANT i8 1
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s8) = COPY [[MUL]](s8)
+    ; CHECK: [[AND:%[0-9]+]]:_(s8) = G_AND [[COPY1]], [[C]]
+    ; CHECK: G_STORE [[AND]](s8), [[DEF]](p0) :: (store 1)
+    ; CHECK: RET 0
     %0(s32) = COPY %edx
     %1(s1) = G_TRUNC %0(s32)
     %2(s1) = G_MUL %1, %1
+    %3:_(p0) = G_IMPLICIT_DEF
+    G_STORE %2, %3 :: (store 1)
     RET 0
 ...
 ---
 name:            test_mul_i16
-# CHECK-LABEL: name:  test_mul_i16
 alignment:       4
 legalized:       false
 regBankSelected: false
-# CHECK:      registers:
-# CHECK-NEXT:   - { id: 0, class: _, preferred-register: '' }
-# CHECK-NEXT:   - { id: 1, class: _, preferred-register: '' }
-# CHECK-NEXT:   - { id: 2, class: _, preferred-register: '' }
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
-# CHECK:      body:             |
-# CHECK-NEXT:   bb.0 (%ir-block.0):
-# CHECK-NEXT:     %0:_(s16) = COPY %di
-# CHECK-NEXT:     %1:_(s16) = COPY %si
-# CHECK-NEXT:     %2:_(s16) = G_MUL %0, %1
-# CHECK-NEXT:     %ax = COPY %2(s16)
-# CHECK-NEXT:     RET 0, implicit %ax
 body:             |
   bb.1 (%ir-block.0):
     liveins: %edi, %esi
 
+    ; CHECK-LABEL: name: test_mul_i16
+    ; CHECK: [[COPY:%[0-9]+]]:_(s16) = COPY %di
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s16) = COPY %si
+    ; CHECK: [[MUL:%[0-9]+]]:_(s16) = G_MUL [[COPY]], [[COPY1]]
+    ; CHECK: %ax = COPY [[MUL]](s16)
+    ; CHECK: RET 0, implicit %ax
     %0(s16) = COPY %di
     %1(s16) = COPY %si
     %2(s16) = G_MUL %0, %1
     %ax = COPY %2(s16)
     RET 0, implicit %ax
 
 ...
 ---
 name:            test_mul_i32
-# CHECK-LABEL: name:  test_mul_i32
 alignment:       4
 legalized:       false
 regBankSelected: false
-# CHECK:      registers:
-# CHECK-NEXT:   - { id: 0, class: _, preferred-register: '' }
-# CHECK-NEXT:   - { id: 1, class: _, preferred-register: '' }
-# CHECK-NEXT:   - { id: 2, class: _, preferred-register: '' }
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
-# CHECK:      body:             |
-# CHECK-NEXT:   bb.0 (%ir-block.0):
-# CHECK-NEXT:     %0:_(s32) = COPY %edi
-# CHECK-NEXT:     %1:_(s32) = COPY %esi
-# CHECK-NEXT:     %2:_(s32) = G_MUL %0, %1
-# CHECK-NEXT:     %eax = COPY %2(s32)
-# CHECK-NEXT:     RET 0, implicit %eax
 body:             |
   bb.1 (%ir-block.0):
     liveins: %edi, %esi
 
+    ; CHECK-LABEL: name: test_mul_i32
+    ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %edi
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s32) = COPY %esi
+    ; CHECK: [[MUL:%[0-9]+]]:_(s32) = G_MUL [[COPY]], [[COPY1]]
+    ; CHECK: %eax = COPY [[MUL]](s32)
+    ; CHECK: RET 0, implicit %eax
     %0(s32) = COPY %edi
     %1(s32) = COPY %esi
     %2(s32) = G_MUL %0, %1
     %eax = COPY %2(s32)
     RET 0, implicit %eax
 
 ...
 ---
 name:            test_mul_i64
-# CHECK-LABEL: name:  test_mul_i64
 alignment:       4
 legalized:       false
 regBankSelected: false
-# CHECK:      registers:
-# CHECK-NEXT:   - { id: 0, class: _, preferred-register: '' }
-# CHECK-NEXT:   - { id: 1, class: _, preferred-register: '' }
-# CHECK-NEXT:   - { id: 2, class: _, preferred-register: '' }
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
-# CHECK:      body:             |
-# CHECK-NEXT:   bb.0 (%ir-block.0):
-# CHECK-NEXT:     %0:_(s64) = COPY %rdi
-# CHECK-NEXT:     %1:_(s64) = COPY %rsi
-# CHECK-NEXT:     %2:_(s64) = G_MUL %0, %1
-# CHECK-NEXT:     %rax = COPY %2(s64)
-# CHECK-NEXT:     RET 0, implicit %rax
 body:             |
   bb.1 (%ir-block.0):
     liveins: %rdi, %rsi
 
+    ; CHECK-LABEL: name: test_mul_i64
+    ; CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY %rdi
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY %rsi
+    ; CHECK: [[MUL:%[0-9]+]]:_(s64) = G_MUL [[COPY]], [[COPY1]]
+    ; CHECK: %rax = COPY [[MUL]](s64)
+    ; CHECK: RET 0, implicit %rax
     %0(s64) = COPY %rdi
     %1(s64) = COPY %rsi
     %2(s64) = G_MUL %0, %1
     %rax = COPY %2(s64)
     RET 0, implicit %rax
 
 ...

test/CodeGen/X86/GlobalISel/legalize-or-scalar.mir

 body:             |
   bb.1 (%ir-block.0):
 
     ; CHECK-LABEL: name: test_or_i1
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %edx
     ; CHECK: [[TRUNC:%[0-9]+]]:_(s8) = G_TRUNC [[COPY]](s32)
     ; CHECK: [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[COPY]](s32)
     ; CHECK: [[OR:%[0-9]+]]:_(s8) = G_OR [[TRUNC]], [[TRUNC1]]
-    ; CHECK: [[TRUNC2:%[0-9]+]]:_(s1) = G_TRUNC [[OR]](s8)
+    ; CHECK: [[DEF:%[0-9]+]]:_(p0) = G_IMPLICIT_DEF
+    ; CHECK: [[C:%[0-9]+]]:_(s8) = G_CONSTANT i8 1
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s8) = COPY [[OR]](s8)
+    ; CHECK: [[AND:%[0-9]+]]:_(s8) = G_AND [[COPY1]], [[C]]
+    ; CHECK: G_STORE [[AND]](s8), [[DEF]](p0) :: (store 1)
     ; CHECK: RET 0
     %0(s32) = COPY %edx
     %1(s1) = G_TRUNC %0(s32)
     %2(s1) = G_OR %1, %1
+    %3:_(p0) = G_IMPLICIT_DEF
+    G_STORE %2, %3 :: (store 1)
     RET 0
 ...
 ---
 name:            test_or_i8
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:

test/CodeGen/X86/GlobalISel/legalize-phi.mir

body:             |
   ; ALL:   successors: %bb.3.cond.end(0x80000000)
   ; ALL:   [[ANYEXT:%[0-9]+]]:_(s8) = G_ANYEXT [[COPY1]](s1)
   ; ALL:   G_BR %bb.3.cond.end
   ; ALL: bb.2.cond.false:
   ; ALL:   successors: %bb.3.cond.end(0x80000000)
   ; ALL:   [[ANYEXT1:%[0-9]+]]:_(s8) = G_ANYEXT [[COPY2]](s1)
   ; ALL: bb.3.cond.end:
   ; ALL:   [[PHI:%[0-9]+]]:_(s8) = G_PHI [[ANYEXT]](s8), %bb.1.cond.true, [[ANYEXT1]](s8), %bb.2.cond.false
-  ; ALL:   [[TRUNC:%[0-9]+]]:_(s1) = G_TRUNC [[PHI]](s8)
-  ; ALL:   [[ZEXT:%[0-9]+]]:_(s8) = G_ZEXT [[TRUNC]](s1)
-  ; ALL:   %al = COPY [[ZEXT]](s8)
+  ; ALL:   %al = COPY
   ; ALL:   RET 0, implicit %al
   bb.1.entry:
     successors: %bb.2.cond.true(0x40000000), %bb.3.cond.false(0x40000000)
     liveins: %edi, %edx, %esi
 
     %0(s32) = COPY %edi
     %1(s1) = COPY %esi
     %2(s1) = COPY %edx

test/CodeGen/X86/GlobalISel/legalize-sub-v128.mir

bb.1 (%ir-block.0):
     ; ALL-LABEL: name: test_sub_v16i8
     ; ALL: [[DEF:%[0-9]+]]:_(<16 x s8>) = IMPLICIT_DEF
     ; ALL: [[DEF1:%[0-9]+]]:_(<16 x s8>) = IMPLICIT_DEF
     ; ALL: [[SUB:%[0-9]+]]:_(<16 x s8>) = G_SUB [[DEF]], [[DEF1]]
     ; ALL: RET 0
     %0(<16 x s8>) = IMPLICIT_DEF
     %1(<16 x s8>) = IMPLICIT_DEF
     %2(<16 x s8>) = G_SUB %0, %1
+    %xmm0 = COPY %2
     RET 0
 
 ...
 ---
 name:            test_sub_v8i16
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
 body:             |
   bb.1 (%ir-block.0):
     liveins: %xmm0, %xmm1
 
     ; ALL-LABEL: name: test_sub_v8i16
     ; ALL: [[DEF:%[0-9]+]]:_(<8 x s16>) = IMPLICIT_DEF
     ; ALL: [[DEF1:%[0-9]+]]:_(<8 x s16>) = IMPLICIT_DEF
     ; ALL: [[SUB:%[0-9]+]]:_(<8 x s16>) = G_SUB [[DEF]], [[DEF1]]
     ; ALL: RET 0
     %0(<8 x s16>) = IMPLICIT_DEF
     %1(<8 x s16>) = IMPLICIT_DEF
     %2(<8 x s16>) = G_SUB %0, %1
+    %xmm0 = COPY %2
     RET 0
 
 ...
 ---
 name:            test_sub_v4i32
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
 body:             |
   bb.1 (%ir-block.0):
     liveins: %xmm0, %xmm1
 
     ; ALL-LABEL: name: test_sub_v4i32
     ; ALL: [[DEF:%[0-9]+]]:_(<4 x s32>) = IMPLICIT_DEF
     ; ALL: [[DEF1:%[0-9]+]]:_(<4 x s32>) = IMPLICIT_DEF
     ; ALL: [[SUB:%[0-9]+]]:_(<4 x s32>) = G_SUB [[DEF]], [[DEF1]]
     ; ALL: RET 0
     %0(<4 x s32>) = IMPLICIT_DEF
     %1(<4 x s32>) = IMPLICIT_DEF
     %2(<4 x s32>) = G_SUB %0, %1
+    %xmm0 = COPY %2
     RET 0
 
 ...
 ---
 name:            test_sub_v2i64
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
 body:             |
   bb.1 (%ir-block.0):
     liveins: %xmm0, %xmm1
 
     ; ALL-LABEL: name: test_sub_v2i64
     ; ALL: [[DEF:%[0-9]+]]:_(<2 x s64>) = IMPLICIT_DEF
     ; ALL: [[DEF1:%[0-9]+]]:_(<2 x s64>) = IMPLICIT_DEF
     ; ALL: [[SUB:%[0-9]+]]:_(<2 x s64>) = G_SUB [[DEF]], [[DEF1]]
     ; ALL: RET 0
     %0(<2 x s64>) = IMPLICIT_DEF
     %1(<2 x s64>) = IMPLICIT_DEF
     %2(<2 x s64>) = G_SUB %0, %1
+    %xmm0 = COPY %2
     RET 0
 
 ...

test/CodeGen/X86/GlobalISel/legalize-sub-v256.mir

bb.1 (%ir-block.0):
     ; ALL-LABEL: name: test_sub_v32i8
     ; ALL: [[DEF:%[0-9]+]]:_(<32 x s8>) = IMPLICIT_DEF
     ; ALL: [[DEF1:%[0-9]+]]:_(<32 x s8>) = IMPLICIT_DEF
     ; ALL: [[SUB:%[0-9]+]]:_(<32 x s8>) = G_SUB [[DEF]], [[DEF1]]
     ; ALL: RET 0
     %0(<32 x s8>) = IMPLICIT_DEF
     %1(<32 x s8>) = IMPLICIT_DEF
     %2(<32 x s8>) = G_SUB %0, %1
+    %ymm0 = COPY %2
     RET 0
 
 ...
 ---
 name:            test_sub_v16i16
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
 body:             |
   bb.1 (%ir-block.0):
     liveins: %ymm0, %ymm1
 
     ; ALL-LABEL: name: test_sub_v16i16
     ; ALL: [[DEF:%[0-9]+]]:_(<16 x s16>) = IMPLICIT_DEF
     ; ALL: [[DEF1:%[0-9]+]]:_(<16 x s16>) = IMPLICIT_DEF
     ; ALL: [[SUB:%[0-9]+]]:_(<16 x s16>) = G_SUB [[DEF]], [[DEF1]]
     ; ALL: RET 0
     %0(<16 x s16>) = IMPLICIT_DEF
     %1(<16 x s16>) = IMPLICIT_DEF
     %2(<16 x s16>) = G_SUB %0, %1
+    %ymm0 = COPY %2
     RET 0
 
 ...
 ---
 name:            test_sub_v8i32
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
 body:             |
   bb.1 (%ir-block.0):
     liveins: %ymm0, %ymm1
 
     ; ALL-LABEL: name: test_sub_v8i32
     ; ALL: [[DEF:%[0-9]+]]:_(<8 x s32>) = IMPLICIT_DEF
     ; ALL: [[DEF1:%[0-9]+]]:_(<8 x s32>) = IMPLICIT_DEF
     ; ALL: [[SUB:%[0-9]+]]:_(<8 x s32>) = G_SUB [[DEF]], [[DEF1]]
     ; ALL: RET 0
     %0(<8 x s32>) = IMPLICIT_DEF
     %1(<8 x s32>) = IMPLICIT_DEF
     %2(<8 x s32>) = G_SUB %0, %1
+    %ymm0 = COPY %2
     RET 0
 
 ...
 ---
 name:            test_sub_v4i64
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
 body:             |
   bb.1 (%ir-block.0):
     liveins: %ymm0, %ymm1
 
     ; ALL-LABEL: name: test_sub_v4i64
     ; ALL: [[DEF:%[0-9]+]]:_(<4 x s64>) = IMPLICIT_DEF
     ; ALL: [[DEF1:%[0-9]+]]:_(<4 x s64>) = IMPLICIT_DEF
     ; ALL: [[SUB:%[0-9]+]]:_(<4 x s64>) = G_SUB [[DEF]], [[DEF1]]
     ; ALL: RET 0
     %0(<4 x s64>) = IMPLICIT_DEF
     %1(<4 x s64>) = IMPLICIT_DEF
     %2(<4 x s64>) = G_SUB %0, %1
+    %ymm0 = COPY %2
     RET 0
 
 ...

test/CodeGen/X86/GlobalISel/legalize-sub-v512.mir

bb.1 (%ir-block.0):
     ; ALL-LABEL: name: test_sub_v64i8
     ; ALL: [[DEF:%[0-9]+]]:_(<64 x s8>) = IMPLICIT_DEF
     ; ALL: [[DEF1:%[0-9]+]]:_(<64 x s8>) = IMPLICIT_DEF
     ; ALL: [[SUB:%[0-9]+]]:_(<64 x s8>) = G_SUB [[DEF]], [[DEF1]]
     ; ALL: RET 0
     %0(<64 x s8>) = IMPLICIT_DEF
     %1(<64 x s8>) = IMPLICIT_DEF
     %2(<64 x s8>) = G_SUB %0, %1
+    %zmm0 = COPY %2
     RET 0
 
 ...
 ---
 name:            test_sub_v32i16
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
 body:             |
   bb.1 (%ir-block.0):
     liveins: %zmm0, %zmm1
 
     ; ALL-LABEL: name: test_sub_v32i16
     ; ALL: [[DEF:%[0-9]+]]:_(<32 x s16>) = IMPLICIT_DEF
     ; ALL: [[DEF1:%[0-9]+]]:_(<32 x s16>) = IMPLICIT_DEF
     ; ALL: [[SUB:%[0-9]+]]:_(<32 x s16>) = G_SUB [[DEF]], [[DEF1]]
     ; ALL: RET 0
     %0(<32 x s16>) = IMPLICIT_DEF
     %1(<32 x s16>) = IMPLICIT_DEF
     %2(<32 x s16>) = G_SUB %0, %1
+    %zmm0 = COPY %2
     RET 0
 
 ...
 ---
 name:            test_sub_v16i32
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
 body:             |
   bb.1 (%ir-block.0):
     liveins: %zmm0, %zmm1
 
     ; ALL-LABEL: name: test_sub_v16i32
     ; ALL: [[DEF:%[0-9]+]]:_(<16 x s32>) = IMPLICIT_DEF
     ; ALL: [[DEF1:%[0-9]+]]:_(<16 x s32>) = IMPLICIT_DEF
     ; ALL: [[SUB:%[0-9]+]]:_(<16 x s32>) = G_SUB [[DEF]], [[DEF1]]
     ; ALL: RET 0
     %0(<16 x s32>) = IMPLICIT_DEF
     %1(<16 x s32>) = IMPLICIT_DEF
     %2(<16 x s32>) = G_SUB %0, %1
+    %zmm0 = COPY %2
     RET 0
 
 ...
 ---
 name:            test_sub_v8i64
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
 body:             |
   bb.1 (%ir-block.0):
     liveins: %zmm0, %zmm1
 
     ; ALL-LABEL: name: test_sub_v8i64
     ; ALL: [[DEF:%[0-9]+]]:_(<8 x s64>) = IMPLICIT_DEF
     ; ALL: [[DEF1:%[0-9]+]]:_(<8 x s64>) = IMPLICIT_DEF
     ; ALL: [[SUB:%[0-9]+]]:_(<8 x s64>) = G_SUB [[DEF]], [[DEF1]]
     ; ALL: RET 0
     %0(<8 x s64>) = IMPLICIT_DEF
     %1(<8 x s64>) = IMPLICIT_DEF
     %2(<8 x s64>) = G_SUB %0, %1
+    %zmm0 = COPY %2
     RET 0
 
 ...

test/CodeGen/X86/GlobalISel/legalize-sub.mir

 body:             |
   bb.1 (%ir-block.0):
 
     ; CHECK-LABEL: name: test_sub_i1
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %edx
     ; CHECK: [[TRUNC:%[0-9]+]]:_(s8) = G_TRUNC [[COPY]](s32)
     ; CHECK: [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[COPY]](s32)
     ; CHECK: [[SUB:%[0-9]+]]:_(s8) = G_SUB [[TRUNC]], [[TRUNC1]]
-    ; CHECK: [[TRUNC2:%[0-9]+]]:_(s1) = G_TRUNC [[SUB]](s8)
+    ; CHECK: [[DEF:%[0-9]+]]:_(p0) = G_IMPLICIT_DEF
+    ; CHECK: [[C:%[0-9]+]]:_(s8) = G_CONSTANT i8 1
+    ; CHECK: [[COPY1:%[0-9]+]]:_(s8) = COPY [[SUB]](s8)
+    ; CHECK: [[AND:%[0-9]+]]:_(s8) = G_AND [[COPY1]], [[C]]
+    ; CHECK: G_STORE [[AND]](s8), [[DEF]](p0) :: (store 1)
     ; CHECK: RET 0
     %0(s32) = COPY %edx
     %1(s1) = G_TRUNC %0(s32)
     %2(s1) = G_SUB %1, %1
+    %3:_(p0) = G_IMPLICIT_DEF
+    G_STORE %2, %3 :: (store 1)
     RET 0
 ...
 ---
 name:            test_sub_i32
 alignment:       4
 legalized:       false
 regBankSelected: false
 tracksRegLiveness: true

test/CodeGen/X86/GlobalISel/legalize-trunc.mir

+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -mtriple=i386-linux-gnu   -global-isel -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X32
 # RUN: llc -mtriple=x86_64-linux-gnu -global-isel -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X64
 --- |
   define void @trunc_check() {
     ret void
   }
 
 ...
 ---
 name:            trunc_check
-# ALL-LABEL: name:            trunc_check
 registers:
   - { id: 0, class: _ }
   - { id: 1, class: _ }
   - { id: 2, class: _ }
   - { id: 3, class: _ }
 body:             |
   bb.1 (%ir-block.0):
+    ; X32-LABEL: name: trunc_check
+    ; X32: [[DEF:%[0-9]+]]:_(s32) = IMPLICIT_DEF
+    ; X32: [[DEF1:%[0-9]+]]:_(p0) = G_IMPLICIT_DEF
+    ; X32: [[C:%[0-9]+]]:_(s8) = G_CONSTANT i8 1
+    ; X32: [[TRUNC:%[0-9]+]]:_(s8) = G_TRUNC [[DEF]](s32)
+    ; X32: [[AND:%[0-9]+]]:_(s8) = G_AND [[TRUNC]], [[C]]
+    ; X32: G_STORE [[AND]](s8), [[DEF1]](p0) :: (store 1)
+    ; X32: [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[DEF]](s32)
+    ; X32: G_STORE [[TRUNC1]](s8), [[DEF1]](p0) :: (store 8)
+    ; X32: [[TRUNC2:%[0-9]+]]:_(s16) = G_TRUNC [[DEF]](s32)
+    ; X32: G_STORE [[TRUNC2]](s16), [[DEF1]](p0) :: (store 16)
+    ; X32: RET 0
+    ; X64-LABEL: name: trunc_check
+    ; X64: [[DEF:%[0-9]+]]:_(s32) = IMPLICIT_DEF
+    ; X64: [[DEF1:%[0-9]+]]:_(p0) = G_IMPLICIT_DEF
+    ; X64: [[C:%[0-9]+]]:_(s8) = G_CONSTANT i8 1
+    ; X64: [[TRUNC:%[0-9]+]]:_(s8) = G_TRUNC [[DEF]](s32)
+    ; X64: [[AND:%[0-9]+]]:_(s8) = G_AND [[TRUNC]], [[C]]
+    ; X64: G_STORE [[AND]](s8), [[DEF1]](p0) :: (store 1)
+    ; X64: [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[DEF]](s32)
+    ; X64: G_STORE [[TRUNC1]](s8), [[DEF1]](p0) :: (store 8)
+    ; X64: [[TRUNC2:%[0-9]+]]:_(s16) = G_TRUNC [[DEF]](s32)
+    ; X64: G_STORE [[TRUNC2]](s16), [[DEF1]](p0) :: (store 16)
+    ; X64: RET 0
     %0(s32) = IMPLICIT_DEF
-    ; ALL: %1:_(s1)  = G_TRUNC %0(s32)
     %1(s1)  = G_TRUNC %0(s32)
+    %4:_(p0) = G_IMPLICIT_DEF
+    G_STORE %1, %4 :: (store 1)
 
-    ; ALL: %2:_(s8)  = G_TRUNC %0(s32)
     %2(s8)  = G_TRUNC %0(s32)
+    G_STORE %2, %4 :: (store 8)
 
-    ; ALL: %3:_(s16) = G_TRUNC %0(s32)
     %3(s16) = G_TRUNC %0(s32)
+    G_STORE %3, %4 :: (store 16)
     RET 0
 
 ...

test/CodeGen/X86/GlobalISel/legalize-undef.mir

+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
 # RUN: llc -mtriple=x86_64-linux-gnu -global-isel -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X64
 # RUN: llc -mtriple=i386-linux-gnu   -global-isel -run-pass=legalizer %s -o - | FileCheck %s --check-prefix=ALL --check-prefix=X32
 
 ---
 name:            test_implicit_def
-# ALL-LABEL: name:  test_implicit_def
 registers:
-# X64:          %0:_(s1) = G_IMPLICIT_DEF
-# X64-NEXT:     %1:_(s8) = G_IMPLICIT_DEF
-# X64-NEXT:     %2:_(s16) = G_IMPLICIT_DEF
-# X64-NEXT:     %3:_(s32) = G_IMPLICIT_DEF
-# X64-NEXT:     %4:_(s64) = G_IMPLICIT_DEF
 #
-# X32:          %0:_(s1) = G_IMPLICIT_DEF
-# X32-NEXT:     %1:_(s8) = G_IMPLICIT_DEF
-# X32-NEXT:     %2:_(s16) = G_IMPLICIT_DEF
-# X32-NEXT:     %3:_(s32) = G_IMPLICIT_DEF
-# X32-NEXT:     %5:_(s32) = G_IMPLICIT_DEF
-# X32-NEXT:     %6:_(s32) = G_IMPLICIT_DEF
-# X32-NEXT:     %4:_(s64) = G_MERGE_VALUES %5(s32), %6(s32)
 body: |
   bb.0.entry:
     liveins:
+    ; ALL-LABEL: name: test_implicit_def
+    ; ALL: [[DEF:%[0-9]+]]:_(p0) = G_IMPLICIT_DEF
+    ; X64: [[DEF1:%[0-9]+]]:_(s1) = G_IMPLICIT_DEF
+    ; X64: [[DEF2:%[0-9]+]]:_(s8) = G_IMPLICIT_DEF
+    ; X64: [[DEF3:%[0-9]+]]:_(s16) = G_IMPLICIT_DEF
+    ; X64: [[DEF4:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF
+    ; X64: [[DEF5:%[0-9]+]]:_(s64) = G_IMPLICIT_DEF
+    ; X32: [[DEF1:%[0-9]+]]:_(s1) = G_IMPLICIT_DEF
+    ; X32: [[DEF2:%[0-9]+]]:_(s8) = G_IMPLICIT_DEF
+    ; X32: [[DEF3:%[0-9]+]]:_(s16) = G_IMPLICIT_DEF
+    ; X32: [[DEF4:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF
+    ; X32: [[DEF5:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF
+    ; X32: [[DEF6:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF
+    %5:_(p0) = G_IMPLICIT_DEF
     %0:_(s1) = G_IMPLICIT_DEF
+    G_STORE %0, %5 ::(store 1)
     %1:_(s8) = G_IMPLICIT_DEF
+    G_STORE %1, %5 ::(store 8)
     %2:_(s16) = G_IMPLICIT_DEF
+    G_STORE %2, %5 ::(store 16)
     %3:_(s32) = G_IMPLICIT_DEF
+    G_STORE %3, %5 ::(store 32)
     %4:_(s64) = G_IMPLICIT_DEF
+    G_STORE %4, %5 ::(store 64)
 ...

test/CodeGen/X86/GlobalISel/legalize-xor-scalar.mir

 body:             |
   bb.1 (%ir-block.0):
 
     ; CHECK-LABEL: name: test_xor_i1
     ; CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY %edx
     ; CHECK: [[TRUNC:%[0-9]+]]:_(s8) = G_TRUNC [[COPY]](s32)
     ; CHECK: [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[COPY]](s32)
     ; CHECK: [[XOR:%[0-9]+]]:_(s8) = G_XOR [[TRUNC]], [[TRUNC1]]
-    ; CHECK: [[TRUNC2:%[0-9]+]]:_(s1) = G_TRUNC [[XOR]](s8)
     ; CHECK: RET 0
     %0(s32) = COPY %edx
     %1(s1) = G_TRUNC %0(s32)
     %2(s1) = G_XOR %1, %1
+    %3:_(p0) = G_IMPLICIT_DEF
+    G_STORE %2, %3 ::(store 1)
     RET 0
 ...
 ---
 name:            test_xor_i8
 alignment:       4
 legalized:       false
 regBankSelected: false
 registers:

test/CodeGen/X86/GlobalISel/or-scalar.ll

 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
 ; RUN: llc -mtriple=x86_64-linux-gnu -global-isel -verify-machineinstrs < %s -o - | FileCheck %s --check-prefix=ALL
 
 define i32 @test_or_i1(i32 %arg1, i32 %arg2) {
 ; ALL-LABEL: test_or_i1:
 ; ALL:       # BB#0:
 ; ALL-NEXT:    cmpl %esi, %edi
 ; ALL-NEXT:    sete %al
 ; ALL-NEXT:    orb %al, %al
+; ALL-NEXT:    movzbl %al, %eax
 ; ALL-NEXT:    andl $1, %eax
 ; ALL-NEXT:    retq
   %c = icmp eq i32 %arg1, %arg2
   %x = or i1 %c , %c
   %ret = zext i1 %x to i32
   ret i32 %ret
 }
 

test/CodeGen/X86/GlobalISel/sub-scalar.ll

; X64-NEXT:    retq
   %ret = sub i8 %arg1, %arg2
   ret i8 %ret
 }
 
 define i32 @test_sub_i1(i32 %arg1, i32 %arg2) {
 ; X64-LABEL: test_sub_i1:
 ; X64:       # BB#0:
 ; X64-NEXT:    subb %sil, %dil
-; X64-NEXT:    andl $1, %edi
-; X64-NEXT:    movl %edi, %eax
+; X64-NEXT:    movzbl %dil, %eax
+; X64-NEXT:    andl $1, %eax
 ; X64-NEXT:    retq
   %a1 = trunc i32 %arg1 to i1
   %a2 = trunc i32 %arg2 to i1
   %x = sub i1 %a1 , %a2
   %ret = zext i1 %x to i32
   ret i32 %ret
 }

test/CodeGen/X86/GlobalISel/x86_64-fallback.ll

 ; RUN: llc -O0 -mtriple=x86_64-linux-gnu -global-isel -global-isel-abort=2 -pass-remarks-missed='gisel*' -verify-machineinstrs %s -o %t.out 2> %t.err
 ; RUN: FileCheck %s --check-prefix=FALLBACK-WITH-REPORT-OUT < %t.out
 ; RUN: FileCheck %s --check-prefix=FALLBACK-WITH-REPORT-ERR < %t.err
 ; This file checks that the fallback path to selection dag works.
 ; The test is fragile in the sense that it must be updated to expose
 ; something that fails with global-isel.
 ; When we cannot produce a test case anymore, that means we can remove
 ; the fallback path.
 
 ; Check that we fallback on invoke translation failures.
-; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to legalize instruction: %vreg1<def>(s80) = G_FCONSTANT x86_fp80 0xK4002A000000000000000
+; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to legalize instruction: G_STORE %vreg1, %vreg0; mem:ST10[%ptr](align=16) (in function: test_x86_fp80_dump)
 ; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for test_x86_fp80_dump
 ; FALLBACK-WITH-REPORT-OUT-LABEL: test_x86_fp80_dump:
 define void @test_x86_fp80_dump(x86_fp80* %ptr){
   store x86_fp80 0xK4002A000000000000000, x86_fp80* %ptr, align 16
   ret void
 }
 
 ; Check that we fallback on byVal argument

test/CodeGen/X86/GlobalISel/xor-scalar.ll

 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
 ; RUN: llc -mtriple=x86_64-linux-gnu -global-isel -verify-machineinstrs < %s -o - | FileCheck %s --check-prefix=ALL
 
 define i32 @test_xor_i1(i32 %arg1, i32 %arg2) {
 ; ALL-LABEL: test_xor_i1:
 ; ALL:       # BB#0:
 ; ALL-NEXT:    cmpl %esi, %edi
 ; ALL-NEXT:    sete %al
 ; ALL-NEXT:    xorb %al, %al
+; ALL-NEXT:    movzbl %al, %eax
 ; ALL-NEXT:    andl $1, %eax
 ; ALL-NEXT:    retq
   %c = icmp eq i32 %arg1, %arg2
   %x = xor i1 %c , %c
   %ret = zext i1 %x to i32
   ret i32 %ret
 }