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| author | Nadav Rotem <nrotem@apple.com> | 2012-10-26 17:17:05 +0000 |
|---|---|---|
| committer | Nadav Rotem <nrotem@apple.com> | 2012-10-26 17:17:05 +0000 |
| commit | 15198e94d2faab4f7b0afd8c82a84f2688820ae9 (patch) | |
| tree | 29e9d9d756bf018c8886195acd2fed110c8dd74f /llvm/lib/Analysis/ValueTracking.cpp | |
| parent | 6fe7acab9d38654f19e0a404e60c3a4a985f0c30 (diff) | |
| download | llvm-15198e94d2faab4f7b0afd8c82a84f2688820ae9.zip llvm-15198e94d2faab4f7b0afd8c82a84f2688820ae9.tar.gz llvm-15198e94d2faab4f7b0afd8c82a84f2688820ae9.tar.bz2 | |
Fix a crash in SimpliftDemandedBits of vectors of pointers.
PR14183.
llvm-svn: 166785
Diffstat (limited to 'llvm/lib/Analysis/ValueTracking.cpp')
| -rw-r--r-- | llvm/lib/Analysis/ValueTracking.cpp | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/llvm/lib/Analysis/ValueTracking.cpp b/llvm/lib/Analysis/ValueTracking.cpp index 1d7f069..2c3ac0e 100644 --- a/llvm/lib/Analysis/ValueTracking.cpp +++ b/llvm/lib/Analysis/ValueTracking.cpp @@ -430,15 +430,13 @@ void llvm::ComputeMaskedBits(Value *V, APInt &KnownZero, APInt &KnownOne, case Instruction::ZExt: case Instruction::Trunc: { Type *SrcTy = I->getOperand(0)->getType(); - + unsigned SrcBitWidth; // Note that we handle pointer operands here because of inttoptr/ptrtoint // which fall through here. - if (SrcTy->isPointerTy()) - SrcBitWidth = TD->getTypeSizeInBits(SrcTy); - else - SrcBitWidth = SrcTy->getScalarSizeInBits(); - + SrcBitWidth = TD->getTypeSizeInBits(SrcTy->getScalarType()); + + assert(SrcBitWidth && "SrcBitWidth can't be zero"); KnownZero = KnownZero.zextOrTrunc(SrcBitWidth); KnownOne = KnownOne.zextOrTrunc(SrcBitWidth); ComputeMaskedBits(I->getOperand(0), KnownZero, KnownOne, TD, Depth+1); |