diff options
| -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 adafccddf0..1db2df2506 100644 --- a/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/lib/Transforms/Scalar/InstructionCombining.cpp @@ -710,7 +710,7 @@ Instruction *InstCombiner::visitAdd(BinaryOperator &I) { // X + (signbit) --> X ^ signbit if (ConstantInt *CI = dyn_cast<ConstantInt>(RHSC)) { unsigned NumBits = CI->getType()->getPrimitiveSizeInBits(); - uint64_t Val = CI->getRawValue() & (1ULL << NumBits)-1; + uint64_t Val = CI->getRawValue() & (~0ULL >> (64- NumBits)); if (Val == (1ULL << (NumBits-1))) return BinaryOperator::createXor(LHS, RHS); } |