diff options
Diffstat (limited to 'lib/Target/ARM/ARMTargetTransformInfo.cpp')
-rw-r--r-- | lib/Target/ARM/ARMTargetTransformInfo.cpp | 67 |
1 files changed, 47 insertions, 20 deletions
diff --git a/lib/Target/ARM/ARMTargetTransformInfo.cpp b/lib/Target/ARM/ARMTargetTransformInfo.cpp index 57df7da7f3..a2ace629ba 100644 --- a/lib/Target/ARM/ARMTargetTransformInfo.cpp +++ b/lib/Target/ARM/ARMTargetTransformInfo.cpp @@ -443,31 +443,58 @@ unsigned ARMTTI::getAddressComputationCost(Type *Ty, bool IsComplex) const { unsigned ARMTTI::getShuffleCost(ShuffleKind Kind, Type *Tp, int Index, Type *SubTp) const { - // We only handle costs of reverse shuffles for now. - if (Kind != SK_Reverse) + // We only handle costs of reverse and alternate shuffles for now. + if (Kind != SK_Reverse && Kind != SK_Alternate) return TargetTransformInfo::getShuffleCost(Kind, Tp, Index, SubTp); - static const CostTblEntry<MVT::SimpleValueType> NEONShuffleTbl[] = { - // Reverse shuffle cost one instruction if we are shuffling within a double - // word (vrev) or two if we shuffle a quad word (vrev, vext). - { ISD::VECTOR_SHUFFLE, MVT::v2i32, 1 }, - { ISD::VECTOR_SHUFFLE, MVT::v2f32, 1 }, - { ISD::VECTOR_SHUFFLE, MVT::v2i64, 1 }, - { ISD::VECTOR_SHUFFLE, MVT::v2f64, 1 }, - - { ISD::VECTOR_SHUFFLE, MVT::v4i32, 2 }, - { ISD::VECTOR_SHUFFLE, MVT::v4f32, 2 }, - { ISD::VECTOR_SHUFFLE, MVT::v8i16, 2 }, - { ISD::VECTOR_SHUFFLE, MVT::v16i8, 2 } - }; + if (Kind == SK_Reverse) { + static const CostTblEntry<MVT::SimpleValueType> NEONShuffleTbl[] = { + // Reverse shuffle cost one instruction if we are shuffling within a + // double word (vrev) or two if we shuffle a quad word (vrev, vext). + {ISD::VECTOR_SHUFFLE, MVT::v2i32, 1}, + {ISD::VECTOR_SHUFFLE, MVT::v2f32, 1}, + {ISD::VECTOR_SHUFFLE, MVT::v2i64, 1}, + {ISD::VECTOR_SHUFFLE, MVT::v2f64, 1}, - std::pair<unsigned, MVT> LT = TLI->getTypeLegalizationCost(Tp); + {ISD::VECTOR_SHUFFLE, MVT::v4i32, 2}, + {ISD::VECTOR_SHUFFLE, MVT::v4f32, 2}, + {ISD::VECTOR_SHUFFLE, MVT::v8i16, 2}, + {ISD::VECTOR_SHUFFLE, MVT::v16i8, 2}}; - int Idx = CostTableLookup(NEONShuffleTbl, ISD::VECTOR_SHUFFLE, LT.second); - if (Idx == -1) - return TargetTransformInfo::getShuffleCost(Kind, Tp, Index, SubTp); + std::pair<unsigned, MVT> LT = TLI->getTypeLegalizationCost(Tp); + + int Idx = CostTableLookup(NEONShuffleTbl, ISD::VECTOR_SHUFFLE, LT.second); + if (Idx == -1) + return TargetTransformInfo::getShuffleCost(Kind, Tp, Index, SubTp); - return LT.first * NEONShuffleTbl[Idx].Cost; + return LT.first * NEONShuffleTbl[Idx].Cost; + } + if (Kind == SK_Alternate) { + static const CostTblEntry<MVT::SimpleValueType> NEONAltShuffleTbl[] = { + // Alt shuffle cost table for ARM. Cost is the number of instructions + // required to create the shuffled vector. + + {ISD::VECTOR_SHUFFLE, MVT::v2f32, 1}, + {ISD::VECTOR_SHUFFLE, MVT::v2i64, 1}, + {ISD::VECTOR_SHUFFLE, MVT::v2f64, 1}, + {ISD::VECTOR_SHUFFLE, MVT::v2i32, 1}, + + {ISD::VECTOR_SHUFFLE, MVT::v4i32, 2}, + {ISD::VECTOR_SHUFFLE, MVT::v4f32, 2}, + {ISD::VECTOR_SHUFFLE, MVT::v4i16, 2}, + + {ISD::VECTOR_SHUFFLE, MVT::v8i16, 16}, + + {ISD::VECTOR_SHUFFLE, MVT::v16i8, 32}}; + + std::pair<unsigned, MVT> LT = TLI->getTypeLegalizationCost(Tp); + int Idx = + CostTableLookup(NEONAltShuffleTbl, ISD::VECTOR_SHUFFLE, LT.second); + if (Idx == -1) + return TargetTransformInfo::getShuffleCost(Kind, Tp, Index, SubTp); + return LT.first * NEONAltShuffleTbl[Idx].Cost; + } + return TargetTransformInfo::getShuffleCost(Kind, Tp, Index, SubTp); } unsigned ARMTTI::getArithmeticInstrCost(unsigned Opcode, Type *Ty, |