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| author | Chris Lattner <sabre@nondot.org> | 2004-02-24 18:10:14 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2004-02-24 18:10:14 +0000 |
| commit | 8ee0593f0dff9a06572743ad2ab4e7634078bec3 (patch) | |
| tree | 017d7248f37ee3ff586332f64db1679d065926fb /llvm/lib/Transforms | |
| parent | a92e58610df3b1f577296b74aed520a22b61bba6 (diff) | |
| download | bcm5719-llvm-8ee0593f0dff9a06572743ad2ab4e7634078bec3.tar.gz bcm5719-llvm-8ee0593f0dff9a06572743ad2ab4e7634078bec3.zip | |
Fix a faulty optimization on FP values
llvm-svn: 11801
Diffstat (limited to 'llvm/lib/Transforms')
| -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 |
