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| author | Davide Italiano <davide@freebsd.org> | 2017-04-29 00:12:18 +0000 |
|---|---|---|
| committer | Davide Italiano <davide@freebsd.org> | 2017-04-29 00:12:18 +0000 |
| commit | 534e314356e597a0dcfcda937fae7538c61b90ca (patch) | |
| tree | 905e9687c456d67b4181c4f15808cca3042bbeb2 /llvm/lib | |
| parent | 19ae6dc853d3d4f867a6d1308f3c3fcca754a7a2 (diff) | |
| download | bcm5719-llvm-534e314356e597a0dcfcda937fae7538c61b90ca.tar.gz bcm5719-llvm-534e314356e597a0dcfcda937fae7538c61b90ca.zip | |
[LoopUnswitch] Don't remove instructions with side effects.
This fixes PR32818.
Differential Revision: https://reviews.llvm.org/D32664
llvm-svn: 301722
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/LoopUnswitch.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Scalar/LoopUnswitch.cpp b/llvm/lib/Transforms/Scalar/LoopUnswitch.cpp index 0b56b4e7ab1..2cda954a096 100644 --- a/llvm/lib/Transforms/Scalar/LoopUnswitch.cpp +++ b/llvm/lib/Transforms/Scalar/LoopUnswitch.cpp @@ -1275,7 +1275,8 @@ static void ReplaceUsesOfWith(Instruction *I, Value *V, LPM->deleteSimpleAnalysisValue(I, L); RemoveFromWorklist(I, Worklist); I->replaceAllUsesWith(V); - I->eraseFromParent(); + if (!I->mayHaveSideEffects()) + I->eraseFromParent(); ++NumSimplify; } |
