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| author | Igor Laevsky <igmyrj@gmail.com> | 2017-03-01 14:38:29 +0000 |
|---|---|---|
| committer | Igor Laevsky <igmyrj@gmail.com> | 2017-03-01 14:38:29 +0000 |
| commit | b40152d5d195f965dd4f397c3770afe13117d9e5 (patch) | |
| tree | 439b952d45427f60071c3aa8c3ef9869127f7000 /llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp | |
| parent | fc261240b213278e77bceee2b02ed579f4ab6a8e (diff) | |
| download | bcm5719-llvm-b40152d5d195f965dd4f397c3770afe13117d9e5.tar.gz bcm5719-llvm-b40152d5d195f965dd4f397c3770afe13117d9e5.zip | |
[DeadStoreElimination] Check function modref behavior before considering memory clobbered
Differential Revision: https://reviews.llvm.org/D29996
llvm-svn: 296625
Diffstat (limited to 'llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp b/llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp index c3c0295bee5..53590175be8 100644 --- a/llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp +++ b/llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp @@ -551,7 +551,7 @@ static bool memoryIsNotModifiedBetween(Instruction *FirstI, Instruction *I = &*BI; if (I->mayWriteToMemory() && I != SecondI) { auto Res = AA->getModRefInfo(I, MemLoc); - if (Res != MRI_NoModRef) + if (Res & MRI_Mod) return false; } } |
