diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp b/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp index 42f1eded803..bf54a6c958b 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp @@ -571,7 +571,7 @@ Value *InstCombiner::SimplifyDemandedUseBits(Value *V, APInt DemandedMask, // If any of the "high bits" are demanded, we should set the sign bit as // demanded. if (DemandedMask.countLeadingZeros() <= ShiftAmt) - DemandedMaskIn.setBit(BitWidth-1); + DemandedMaskIn.setSignBit(); // If the shift is exact, then it does demand the low bits (and knows that // they are zero). @@ -629,12 +629,12 @@ Value *InstCombiner::SimplifyDemandedUseBits(Value *V, APInt DemandedMask, // If LHS is non-negative or has all low bits zero, then the upper bits // are all zero. - if (LHSKnownZero[BitWidth-1] || ((LHSKnownZero & LowBits) == LowBits)) + if (LHSKnownZero.isNegative() || ((LHSKnownZero & LowBits) == LowBits)) KnownZero |= ~LowBits; // If LHS is negative and not all low bits are zero, then the upper bits // are all one. - if (LHSKnownOne[BitWidth-1] && ((LHSKnownOne & LowBits) != 0)) + if (LHSKnownOne.isNegative() && ((LHSKnownOne & LowBits) != 0)) KnownOne |= ~LowBits; assert(!(KnownZero & KnownOne) && "Bits known to be one AND zero?"); |
