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| author | Chris Lattner <sabre@nondot.org> | 2008-07-17 06:07:20 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2008-07-17 06:07:20 +0000 |
| commit | 27fbef4a8fd19e9ab3d007ff11778576368ea39c (patch) | |
| tree | 52138af43bb893e2aea4ab88dd62095170114531 /lib | |
| parent | 50584a6e642924fdd21ffbfc22c147bdb7ea8723 (diff) | |
| download | external_llvm-27fbef4a8fd19e9ab3d007ff11778576368ea39c.zip external_llvm-27fbef4a8fd19e9ab3d007ff11778576368ea39c.tar.gz external_llvm-27fbef4a8fd19e9ab3d007ff11778576368ea39c.tar.bz2 | |
Fix PR2553
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53715 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Transforms/Scalar/InstructionCombining.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp index 4a45e66..861badf 100644 --- a/lib/Transforms/Scalar/InstructionCombining.cpp +++ b/lib/Transforms/Scalar/InstructionCombining.cpp @@ -2255,7 +2255,8 @@ Instruction *InstCombiner::visitAdd(BinaryOperator &I) { Instruction *InstCombiner::visitSub(BinaryOperator &I) { Value *Op0 = I.getOperand(0), *Op1 = I.getOperand(1); - if (Op0 == Op1) // sub X, X -> 0 + if (Op0 == Op1 && // sub X, X -> 0 + !I.getType()->isFPOrFPVector()) return ReplaceInstUsesWith(I, Constant::getNullValue(I.getType())); // If this is a 'B = x-(-A)', change to B = x+A... |