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[InstCombine] Actually combine AA metadata when replacing one load with another

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Fixes PR24083

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241955 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bjorn Steinbrink 2015-07-10 22:30:17 +00:00
parent bd884766bf
commit ca7473f5d0
2 changed files with 2 additions and 6 deletions
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2
lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp
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@ -762,8 +762,6 @@ Instruction *InstCombiner::visitLoadInst(LoadInst &LI) {
LLVMContext::MD_nonnull,
};
combineMetadata(NLI, &LI, KnownIDs);
if (AATags)
NLI->setAAMetadata(AATags);
};
return ReplaceInstUsesWith(

6
test/Transforms/InstCombine/load-combine-metadata.ll
View File

@ -3,17 +3,15 @@
target datalayout = "e-m:e-p:64:64:64-i64:64-f80:128-n8:16:32:64-S128"
; CHECK-LABEL: @test_load_load_combine_metadata(
; Check that range metadata is combined and AA metadata is preserved
; Check that range and AA metadata is combined
; CHECK: %[[V:.*]] = load i32, i32* %0
; CHECK-SAME: !tbaa !{{[0-9]+}}
; CHECK-SAME: !range ![[RANGE:[0-9]+]]
; CHECK-SAME: !alias.scope !{{[0-9]+}}
; CHECK-SAME: !noalias !{{[0-9]+}}
; CHECK: store i32 %[[V]], i32* %1
; CHECK: store i32 %[[V]], i32* %2
define void @test_load_load_combine_metadata(i32*, i32*, i32*) {
%a = load i32, i32* %0, !tbaa !8, !range !0, !alias.scope !5, !noalias !6
%b = load i32, i32* %0, !range !1
%b = load i32, i32* %0, !tbaa !8, !range !1
store i32 %a, i32* %1
store i32 %b, i32* %2
ret void