diff options
Diffstat (limited to 'lib/Transforms/Scalar/InstructionCombining.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/InstructionCombining.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp index 516841a..05e1269 100644 --- a/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/lib/Transforms/Scalar/InstructionCombining.cpp @@ -1236,7 +1236,7 @@ bool InstCombiner::SimplifyDemandedBits(Value *V, APInt DemandedMask, // If the input sign bit is known to be zero, or if none of the top bits // are demanded, turn this into an unsigned shift right. - if (RHSKnownZero[BitWidth-ShiftAmt-1] || + if (BitWidth == ShiftAmt || RHSKnownZero[BitWidth-ShiftAmt-1] || (HighBits & ~DemandedMask) == HighBits) { // Perform the logical shift right. Value *NewVal = BinaryOperator::CreateLShr( |