diff options
Diffstat (limited to 'llvm/lib/Transforms')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp b/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp index 0ca62b7ae40..f32ee965397 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp @@ -869,8 +869,8 @@ bool InstCombiner::WillNotOverflowSignedSub(Value *LHS, Value *RHS, // Subtraction of two 2's complement numbers having identical signs will // never overflow. - if ((LHSKnown.One[BitWidth - 1] && RHSKnown.One[BitWidth - 1]) || - (LHSKnown.Zero[BitWidth - 1] && RHSKnown.Zero[BitWidth - 1])) + if ((LHSKnown.isNegative() && RHSKnown.isNegative()) || + (LHSKnown.isNonNegative() && RHSKnown.isNonNegative())) return true; // TODO: implement logic similar to checkRippleForAdd |
