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| author | Craig Topper <craig.topper@gmail.com> | 2017-04-12 22:54:24 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@gmail.com> | 2017-04-12 22:54:24 +0000 |
| commit | 81c03a778449098627684730ad3d8a0533ded13d (patch) | |
| tree | 4a6bda0d7f9b1f49246abcfb491a6ad5a280745b /llvm/lib/Analysis | |
| parent | e391d9653f71b59e134a1921ca8655db128111b7 (diff) | |
| download | bcm5719-llvm-81c03a778449098627684730ad3d8a0533ded13d.tar.gz bcm5719-llvm-81c03a778449098627684730ad3d8a0533ded13d.zip | |
[InstSimplify] Don't try to constant fold AllocaInsts since it won't do anything.
Should give a small compile time improvement.
llvm-svn: 300125
Diffstat (limited to 'llvm/lib/Analysis')
| -rw-r--r-- | llvm/lib/Analysis/InstructionSimplify.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/Analysis/InstructionSimplify.cpp b/llvm/lib/Analysis/InstructionSimplify.cpp index 0e522cb4e49..e12f640394e 100644 --- a/llvm/lib/Analysis/InstructionSimplify.cpp +++ b/llvm/lib/Analysis/InstructionSimplify.cpp @@ -4627,6 +4627,10 @@ Value *llvm::SimplifyInstruction(Instruction *I, const DataLayout &DL, Result = SimplifyCastInst(I->getOpcode(), I->getOperand(0), I->getType(), DL, TLI, DT, AC, I); break; + case Instruction::Alloca: + // No simplifications for Alloca and it can't be constant folded. + Result = nullptr; + break; } // In general, it is possible for computeKnownBits to determine all bits in a |
