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Use APInt arithmetic, fixed typo. Thanks to Benjamin Kramer for noticing that. 

llvm-svn: 206144
This commit is contained in:
Serge Pavlov 2014-04-14 02:20:19 +00:00
parent fe5bc7b138
commit b5f3ddc7a1
1 changed files with 2 additions and 2 deletions
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4
llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
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@ -2149,7 +2149,7 @@ static Instruction *ProcessUMulZExtIdiom(ICmpInst &I, Value *MulVal,
// mulval = mul(zext A, zext B)
// cmp ule mulval, max + 1
if (ConstantInt *CI = dyn_cast<ConstantInt>(OtherVal)) {
APInt MaxVal(CI->getBitWidth(), 1ULL << MulWidth);
APInt MaxVal = APInt::getOneBitSet(CI->getBitWidth(), MulWidth);
if (MaxVal.eq(CI->getValue()))
break; // Recognized
}
@ -2176,7 +2176,7 @@ static Instruction *ProcessUMulZExtIdiom(ICmpInst &I, Value *MulVal,
// If there are uses of mul result other than the comparison, we know that
// they are truncation or binary AND. Change them to use result of
// mul.with.overflow and ajust properly mask/size.
// mul.with.overflow and adjust properly mask/size.
if (MulVal->hasNUsesOrMore(2)) {
Value *Mul = Builder->CreateExtractValue(Call, 0, "umul.value");
for (User *U : MulVal->users()) {