diff options
Diffstat (limited to 'lib/Transforms/Scalar/InstructionCombining.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/InstructionCombining.cpp | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp index 6b1da0d256..461d5fc780 100644 --- a/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/lib/Transforms/Scalar/InstructionCombining.cpp @@ -965,7 +965,7 @@ void InstCombiner::ComputeMaskedBits(Value *V, const APInt &Mask, if (ConstantInt *Rem = dyn_cast<ConstantInt>(I->getOperand(1))) { APInt RA = Rem->getValue(); if (RA.isPowerOf2() || (-RA).isPowerOf2()) { - APInt LowBits = RA.isStrictlyPositive() ? ((RA - 1) | RA) : ~RA; + APInt LowBits = RA.isStrictlyPositive() ? (RA - 1) : ~RA; APInt Mask2 = LowBits | APInt::getSignBit(BitWidth); ComputeMaskedBits(I->getOperand(0), Mask2,KnownZero2,KnownOne2,Depth+1); @@ -986,8 +986,8 @@ void InstCombiner::ComputeMaskedBits(Value *V, const APInt &Mask, case Instruction::URem: { if (ConstantInt *Rem = dyn_cast<ConstantInt>(I->getOperand(1))) { APInt RA = Rem->getValue(); - if (RA.isStrictlyPositive() && RA.isPowerOf2()) { - APInt LowBits = (RA - 1) | RA; + if (RA.isPowerOf2()) { + APInt LowBits = (RA - 1); APInt Mask2 = LowBits & Mask; KnownZero |= ~LowBits & Mask; ComputeMaskedBits(I->getOperand(0), Mask2, KnownZero, KnownOne,Depth+1); @@ -1728,7 +1728,7 @@ bool InstCombiner::SimplifyDemandedBits(Value *V, APInt DemandedMask, if (ConstantInt *Rem = dyn_cast<ConstantInt>(I->getOperand(1))) { APInt RA = Rem->getValue(); if (RA.isPowerOf2() || (-RA).isPowerOf2()) { - APInt LowBits = RA.isStrictlyPositive() ? (RA - 1) | RA : ~RA; + APInt LowBits = RA.isStrictlyPositive() ? (RA - 1) : ~RA; APInt Mask2 = LowBits | APInt::getSignBit(BitWidth); if (SimplifyDemandedBits(I->getOperand(0), Mask2, LHSKnownZero, LHSKnownOne, Depth+1)) @@ -1749,8 +1749,8 @@ bool InstCombiner::SimplifyDemandedBits(Value *V, APInt DemandedMask, case Instruction::URem: { if (ConstantInt *Rem = dyn_cast<ConstantInt>(I->getOperand(1))) { APInt RA = Rem->getValue(); - if (RA.isStrictlyPositive() && RA.isPowerOf2()) { - APInt LowBits = (RA - 1) | RA; + if (RA.isPowerOf2()) { + APInt LowBits = (RA - 1); APInt Mask2 = LowBits & DemandedMask; KnownZero |= ~LowBits & DemandedMask; if (SimplifyDemandedBits(I->getOperand(0), Mask2, |