From 12145f0339648426af2a33ed50c11de7cfcdbdf8 Mon Sep 17 00:00:00 2001 From: Nadav Rotem Date: Fri, 26 Oct 2012 17:17:05 +0000 Subject: 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 --- lib/Analysis/ValueTracking.cpp | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) (limited to 'lib') 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); -- cgit v1.2.3