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| author | James Molloy <james.molloy@arm.com> | 2014-08-08 12:41:08 +0000 |
|---|---|---|
| committer | James Molloy <james.molloy@arm.com> | 2014-08-08 12:41:08 +0000 |
| commit | 65b08f5e4690e21c712564ba6c49d4cdb4fe3ca5 (patch) | |
| tree | 54326ae5b567f1710feb2d88db47ef85e4997091 /llvm/lib/Transforms/Vectorize/LoopVectorize.cpp | |
| parent | 3feea9c11a389a969f30473c9f70051246f5c935 (diff) | |
| download | bcm5719-llvm-65b08f5e4690e21c712564ba6c49d4cdb4fe3ca5.tar.gz bcm5719-llvm-65b08f5e4690e21c712564ba6c49d4cdb4fe3ca5.zip | |
[LoopVectorizer] Enable support for floating-point subtraction reductions
llvm-svn: 215200
Diffstat (limited to 'llvm/lib/Transforms/Vectorize/LoopVectorize.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Vectorize/LoopVectorize.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp index 9f6cfeca2c0..1ab439f724a 100644 --- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp +++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp @@ -5136,7 +5136,7 @@ LoopVectorizationLegality::isReductionInstr(Instruction *I, ReductionKind Kind, ReductionInstDesc &Prev) { bool FP = I->getType()->isFloatingPointTy(); - bool FastMath = (FP && I->isCommutative() && I->isAssociative()); + bool FastMath = FP && I->hasUnsafeAlgebra(); switch (I->getOpcode()) { default: return ReductionInstDesc(false, I); @@ -5158,6 +5158,7 @@ LoopVectorizationLegality::isReductionInstr(Instruction *I, return ReductionInstDesc(Kind == RK_IntegerXor, I); case Instruction::FMul: return ReductionInstDesc(Kind == RK_FloatMult && FastMath, I); + case Instruction::FSub: case Instruction::FAdd: return ReductionInstDesc(Kind == RK_FloatAdd && FastMath, I); case Instruction::FCmp: |
