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

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206144 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Serge Pavlov 2014-04-14 02:20:19 +00:00
parent 01b72784c9
commit aa827a513c
1 changed files with 2 additions and 2 deletions
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4
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()) {