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path: root/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
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Diffstat (limited to 'lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp')
-rw-r--r--lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp38
1 files changed, 19 insertions, 19 deletions
diff --git a/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp b/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
index 5366bdd0c3..48184c0bd2 100644
--- a/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
+++ b/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
@@ -34,7 +34,7 @@ static bool ShrinkDemandedConstant(Instruction *I, unsigned OpNo,
if (!OpC) return false;
// If there are no bits set that aren't demanded, nothing to do.
- Demanded.zextOrTrunc(OpC->getValue().getBitWidth());
+ Demanded = Demanded.zextOrTrunc(OpC->getValue().getBitWidth());
if ((~Demanded & OpC->getValue()) == 0)
return false;
@@ -388,15 +388,15 @@ Value *InstCombiner::SimplifyDemandedUseBits(Value *V, APInt DemandedMask,
break;
case Instruction::Trunc: {
unsigned truncBf = I->getOperand(0)->getType()->getScalarSizeInBits();
- DemandedMask.zext(truncBf);
- KnownZero.zext(truncBf);
- KnownOne.zext(truncBf);
+ DemandedMask = DemandedMask.zext(truncBf);
+ KnownZero = KnownZero.zext(truncBf);
+ KnownOne = KnownOne.zext(truncBf);
if (SimplifyDemandedBits(I->getOperandUse(0), DemandedMask,
KnownZero, KnownOne, Depth+1))
return I;
- DemandedMask.trunc(BitWidth);
- KnownZero.trunc(BitWidth);
- KnownOne.trunc(BitWidth);
+ DemandedMask = DemandedMask.trunc(BitWidth);
+ KnownZero = KnownZero.trunc(BitWidth);
+ KnownOne = KnownOne.trunc(BitWidth);
assert(!(KnownZero & KnownOne) && "Bits known to be one AND zero?");
break;
}
@@ -426,15 +426,15 @@ Value *InstCombiner::SimplifyDemandedUseBits(Value *V, APInt DemandedMask,
// Compute the bits in the result that are not present in the input.
unsigned SrcBitWidth =I->getOperand(0)->getType()->getScalarSizeInBits();
- DemandedMask.trunc(SrcBitWidth);
- KnownZero.trunc(SrcBitWidth);
- KnownOne.trunc(SrcBitWidth);
+ DemandedMask = DemandedMask.trunc(SrcBitWidth);
+ KnownZero = KnownZero.trunc(SrcBitWidth);
+ KnownOne = KnownOne.trunc(SrcBitWidth);
if (SimplifyDemandedBits(I->getOperandUse(0), DemandedMask,
KnownZero, KnownOne, Depth+1))
return I;
- DemandedMask.zext(BitWidth);
- KnownZero.zext(BitWidth);
- KnownOne.zext(BitWidth);
+ DemandedMask = DemandedMask.zext(BitWidth);
+ KnownZero = KnownZero.zext(BitWidth);
+ KnownOne = KnownOne.zext(BitWidth);
assert(!(KnownZero & KnownOne) && "Bits known to be one AND zero?");
// The top bits are known to be zero.
KnownZero |= APInt::getHighBitsSet(BitWidth, BitWidth - SrcBitWidth);
@@ -453,15 +453,15 @@ Value *InstCombiner::SimplifyDemandedUseBits(Value *V, APInt DemandedMask,
if ((NewBits & DemandedMask) != 0)
InputDemandedBits.setBit(SrcBitWidth-1);
- InputDemandedBits.trunc(SrcBitWidth);
- KnownZero.trunc(SrcBitWidth);
- KnownOne.trunc(SrcBitWidth);
+ InputDemandedBits = InputDemandedBits.trunc(SrcBitWidth);
+ KnownZero = KnownZero.trunc(SrcBitWidth);
+ KnownOne = KnownOne.trunc(SrcBitWidth);
if (SimplifyDemandedBits(I->getOperandUse(0), InputDemandedBits,
KnownZero, KnownOne, Depth+1))
return I;
- InputDemandedBits.zext(BitWidth);
- KnownZero.zext(BitWidth);
- KnownOne.zext(BitWidth);
+ InputDemandedBits = InputDemandedBits.zext(BitWidth);
+ KnownZero = KnownZero.zext(BitWidth);
+ KnownOne = KnownOne.zext(BitWidth);
assert(!(KnownZero & KnownOne) && "Bits known to be one AND zero?");
// If the sign bit of the input is known set or clear, then we know the