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reduce indent; NFC 

llvm-svn: 270372
This commit is contained in:
Sanjay Patel 2016-05-22 17:08:52 +00:00
parent 7b41393497
commit a8ef4a5737
1 changed files with 21 additions and 21 deletions
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42
llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
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@ -45,29 +45,29 @@ static Value *simplifyValueKnownNonZero(Value *V, InstCombiner &IC,
// (PowerOfTwo >>u B) --> isExact since shifting out the result would make it
// inexact. Similarly for <<.
if (BinaryOperator *I = dyn_cast<BinaryOperator>(V))
if (I->isLogicalShift() &&
isKnownToBeAPowerOfTwo(I->getOperand(0), IC.getDataLayout(), false, 0,
IC.getAssumptionCache(), &CxtI,
IC.getDominatorTree())) {
// We know that this is an exact/nuw shift and that the input is a
// non-zero context as well.
if (Value *V2 = simplifyValueKnownNonZero(I->getOperand(0), IC, CxtI)) {
I->setOperand(0, V2);
MadeChange = true;
}
if (I->getOpcode() == Instruction::LShr && !I->isExact()) {
I->setIsExact();
MadeChange = true;
}
if (I->getOpcode() == Instruction::Shl && !I->hasNoUnsignedWrap()) {
I->setHasNoUnsignedWrap();
MadeChange = true;
}
BinaryOperator *I = dyn_cast<BinaryOperator>(V);
if (I && I->isLogicalShift() &&
isKnownToBeAPowerOfTwo(I->getOperand(0), IC.getDataLayout(), false, 0,
IC.getAssumptionCache(), &CxtI,
IC.getDominatorTree())) {
// We know that this is an exact/nuw shift and that the input is a
// non-zero context as well.
if (Value *V2 = simplifyValueKnownNonZero(I->getOperand(0), IC, CxtI)) {
I->setOperand(0, V2);
MadeChange = true;
}
if (I->getOpcode() == Instruction::LShr && !I->isExact()) {
I->setIsExact();
MadeChange = true;
}
if (I->getOpcode() == Instruction::Shl && !I->hasNoUnsignedWrap()) {
I->setHasNoUnsignedWrap();
MadeChange = true;
}
}
// TODO: Lots more we could do here:
// If V is a phi node, we can call this on each of its operands.
// "select cond, X, 0" can simplify to "X".