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| author | Sanjay Patel <spatel@rotateright.com> | 2016-04-26 00:47:39 +0000 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2016-04-26 00:47:39 +0000 |
| commit | a31b0c0ece352e7ba31a65f155e9252647c2b1cd (patch) | |
| tree | a337dbfe094b07c3bbea40e60d2b0bda04ca05ce /llvm/lib/CodeGen/CodeGenPrepare.cpp | |
| parent | 90d96bf41e49de6f95ce3848815e99dc40906adb (diff) | |
| download | bcm5719-llvm-a31b0c0ece352e7ba31a65f155e9252647c2b1cd.tar.gz bcm5719-llvm-a31b0c0ece352e7ba31a65f155e9252647c2b1cd.zip | |
[CodeGenPrepare] don't convert an unpredictable select into control flow
Suggested in the review of D19488:
http://reviews.llvm.org/D19488
llvm-svn: 267504
Diffstat (limited to 'llvm/lib/CodeGen/CodeGenPrepare.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/CodeGenPrepare.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/CodeGenPrepare.cpp b/llvm/lib/CodeGen/CodeGenPrepare.cpp index 9ba93a956fa..659b0c572fb 100644 --- a/llvm/lib/CodeGen/CodeGenPrepare.cpp +++ b/llvm/lib/CodeGen/CodeGenPrepare.cpp @@ -4568,7 +4568,8 @@ bool CodeGenPrepare::optimizeSelectInst(SelectInst *SI) { bool VectorCond = !SI->getCondition()->getType()->isIntegerTy(1); // Can we convert the 'select' to CF ? - if (DisableSelectToBranch || OptSize || !TLI || VectorCond) + if (DisableSelectToBranch || OptSize || !TLI || VectorCond || + SI->getMetadata(LLVMContext::MD_unpredictable)) return false; TargetLowering::SelectSupportKind SelectKind; |
