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fix formatting; NFC

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llvm-svn: 259324
This commit is contained in:
Sanjay Patel 2016-01-31 16:34:11 +00:00
parent 9cba4166c0
commit 5b8745669b
1 changed files with 13 additions and 13 deletions
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26
lib/Transforms/InstCombine/InstCombineShifts.cpp
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@ -166,9 +166,10 @@ static bool CanEvaluateShifted(Value *V, unsigned NumBits, bool isLeftShift,
}
case Instruction::Select: {
SelectInst *SI = cast<SelectInst>(I);
return CanEvaluateShifted(SI->getTrueValue(), NumBits, isLeftShift,
IC, SI) &&
CanEvaluateShifted(SI->getFalseValue(), NumBits, isLeftShift, IC, SI);
Value *TrueVal = SI->getTrueValue();
Value *FalseVal = SI->getFalseValue();
return CanEvaluateShifted(TrueVal, NumBits, isLeftShift, IC, SI) &&
CanEvaluateShifted(FalseVal, NumBits, isLeftShift, IC, SI);
}
case Instruction::PHI: {
// We can change a phi if we can change all operands. Note that we never
@ -176,8 +177,7 @@ static bool CanEvaluateShifted(Value *V, unsigned NumBits, bool isLeftShift,
// instructions with a single use.
PHINode *PN = cast<PHINode>(I);
for (Value *IncValue : PN->incoming_values())
if (!CanEvaluateShifted(IncValue, NumBits, isLeftShift,
IC, PN))
if (!CanEvaluateShifted(IncValue, NumBits, isLeftShift, IC, PN))
return false;
return true;
}
@ -356,7 +356,7 @@ Instruction *InstCombiner::FoldShiftByConstant(Value *Op0, Constant *Op1,
if (BO->getOpcode() == Instruction::Mul && isLeftShift)
if (Constant *BOOp = dyn_cast<Constant>(BO->getOperand(1)))
return BinaryOperator::CreateMul(BO->getOperand(0),
ConstantExpr::getShl(BOOp, Op1));
ConstantExpr::getShl(BOOp, Op1));
// Try to fold constant and into select arguments.
if (SelectInst *SI = dyn_cast<SelectInst>(Op0))
@ -710,11 +710,11 @@ Instruction *InstCombiner::visitShl(BinaryOperator &I) {
// If the shifted-out value is known-zero, then this is a NUW shift.
if (!I.hasNoUnsignedWrap() &&
MaskedValueIsZero(I.getOperand(0),
APInt::getHighBitsSet(Op1C->getBitWidth(), ShAmt),
0, &I)) {
I.setHasNoUnsignedWrap();
return &I;
}
APInt::getHighBitsSet(Op1C->getBitWidth(), ShAmt), 0,
&I)) {
I.setHasNoUnsignedWrap();
return &I;
}
// If the shifted out value is all signbits, this is a NSW shift.
if (!I.hasNoSignedWrap() &&
@ -813,8 +813,8 @@ Instruction *InstCombiner::visitAShr(BinaryOperator &I) {
// If the shifted-out value is known-zero, then this is an exact shift.
if (!I.isExact() &&
MaskedValueIsZero(Op0,APInt::getLowBitsSet(Op1C->getBitWidth(),ShAmt),
0, &I)){
MaskedValueIsZero(Op0, APInt::getLowBitsSet(Op1C->getBitWidth(), ShAmt),
0, &I)) {
I.setIsExact();
return &I;
}