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Fix PR336: The instcombine pass asserts when visiting load instruction 

llvm-svn: 13400
This commit is contained in:
Chris Lattner 2004-05-07 15:35:56 +00:00
parent e0727fe00d
commit d9e5813821
1 changed files with 3 additions and 2 deletions
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5
llvm/lib/Transforms/Scalar/InstructionCombining.cpp
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@ -887,7 +887,7 @@ Instruction *InstCombiner::visitRem(BinaryOperator &I) {
// if so, convert to a bitwise and.
if (ConstantUInt *C = dyn_cast<ConstantUInt>(RHS))
if (uint64_t Val = C->getValue()) // Don't break X % 0 (divide by zero)
if (!(Val & Val-1)) // Power of 2
if (!(Val & (Val-1))) // Power of 2
return BinaryOperator::create(Instruction::And, I.getOperand(0),
ConstantUInt::get(I.getType(), Val-1));
}
@ -2869,7 +2869,8 @@ Instruction *InstCombiner::visitLoadInst(LoadInst &LI) {
if (const PointerType *SrcTy =
dyn_cast<PointerType>(CI->getOperand(0)->getType())) {
const Type *SrcPTy = SrcTy->getElementType();
if (TD->getTypeSize(SrcPTy) == TD->getTypeSize(DestPTy) &&
if (SrcPTy->isSized() && DestPTy->isSized() &&
TD->getTypeSize(SrcPTy) == TD->getTypeSize(DestPTy) &&
(SrcPTy->isInteger() || isa<PointerType>(SrcPTy)) &&
(DestPTy->isInteger() || isa<PointerType>(DestPTy))) {
// Okay, we are casting from one integer or pointer type to another of