diff options
Diffstat (limited to 'llvm/lib/Transforms/Scalar/InstructionCombining.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/InstructionCombining.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Scalar/InstructionCombining.cpp b/llvm/lib/Transforms/Scalar/InstructionCombining.cpp index fb7dc984923..322112a942e 100644 --- a/llvm/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/llvm/lib/Transforms/Scalar/InstructionCombining.cpp @@ -441,7 +441,8 @@ Instruction *InstCombiner::visitAdd(BinaryOperator &I) { Value *LHS = I.getOperand(0), *RHS = I.getOperand(1); // X + 0 --> X - if (RHS == Constant::getNullValue(I.getType())) + if (!I.getType()->isFloatingPoint() && // -0 + +0 = +0, so it's not a noop + RHS == Constant::getNullValue(I.getType())) return ReplaceInstUsesWith(I, LHS); // X + X --> X << 1 |
