diff options
Diffstat (limited to 'llvm/lib/Target/ARM')
| -rw-r--r-- | llvm/lib/Target/ARM/ARMTargetTransformInfo.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/llvm/lib/Target/ARM/ARMTargetTransformInfo.h b/llvm/lib/Target/ARM/ARMTargetTransformInfo.h index 880588adfdf..4a9a8f688ab 100644 --- a/llvm/lib/Target/ARM/ARMTargetTransformInfo.h +++ b/llvm/lib/Target/ARM/ARMTargetTransformInfo.h @@ -171,7 +171,16 @@ public: TTI::ReductionFlags Flags) const; bool shouldExpandReduction(const IntrinsicInst *II) const { - return false; + switch (II->getIntrinsicID()) { + case Intrinsic::experimental_vector_reduce_v2_fadd: + case Intrinsic::experimental_vector_reduce_v2_fmul: + // We don't have legalization support for ordered FP reductions. + return !II->getFastMathFlags().allowReassoc(); + + default: + // Don't expand anything else, let legalization deal with it. + return false; + } } int getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src, |
