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[InstCombine] Use APInt::getBitsSetFrom to shortern a line and fix an 80 columns violation. NFC 

Fix a similar line in the same function.

llvm-svn: 331947
This commit is contained in:
Craig Topper 2018-05-10 00:53:22 +00:00
parent c3f259cb6c
commit 333efc951a
1 changed files with 2 additions and 2 deletions
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4
llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp
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@ -365,7 +365,7 @@ static bool canEvaluateTruncated(Value *V, Type *Ty, InstCombiner &IC,
uint32_t OrigBitWidth = OrigTy->getScalarSizeInBits();
uint32_t BitWidth = Ty->getScalarSizeInBits();
if (BitWidth < OrigBitWidth) {
APInt Mask = APInt::getHighBitsSet(OrigBitWidth, OrigBitWidth-BitWidth);
APInt Mask = APInt::getBitsSetFrom(OrigBitWidth, BitWidth);
if (IC.MaskedValueIsZero(I->getOperand(0), Mask, 0, CxtI) &&
IC.MaskedValueIsZero(I->getOperand(1), Mask, 0, CxtI)) {
return canEvaluateTruncated(I->getOperand(0), Ty, IC, CxtI) &&
@ -394,7 +394,7 @@ static bool canEvaluateTruncated(Value *V, Type *Ty, InstCombiner &IC,
uint32_t OrigBitWidth = OrigTy->getScalarSizeInBits();
uint32_t BitWidth = Ty->getScalarSizeInBits();
if (IC.MaskedValueIsZero(I->getOperand(0),
APInt::getHighBitsSet(OrigBitWidth, OrigBitWidth-BitWidth), 0, CxtI) &&
APInt::getBitsSetFrom(OrigBitWidth, BitWidth), 0, CxtI) &&
Amt->getLimitedValue(BitWidth) < BitWidth) {
return canEvaluateTruncated(I->getOperand(0), Ty, IC, CxtI);
}