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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 | 12145f0339648426af2a33ed50c11de7cfcdbdf8 (patch) | |
| tree | 9c6bfe21c74c327bbb74831708016e8d75ea3147 /lib | |
| parent | af8082206beb2a9ddaa7380e735d1ae1c221bce6 (diff) | |
| download | llvm-12145f0339648426af2a33ed50c11de7cfcdbdf8.tar.gz llvm-12145f0339648426af2a33ed50c11de7cfcdbdf8.tar.bz2 llvm-12145f0339648426af2a33ed50c11de7cfcdbdf8.tar.xz | |
Fix a crash in SimpliftDemandedBits of vectors of pointers.
PR14183.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166785 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Analysis/ValueTracking.cpp | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/lib/Analysis/ValueTracking.cpp b/lib/Analysis/ValueTracking.cpp index 1d7f0692cb..2c3ac0e075 100644 --- a/lib/Analysis/ValueTracking.cpp +++ b/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); |