diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86TargetTransformInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86TargetTransformInfo.cpp | 95 |
1 files changed, 48 insertions, 47 deletions
diff --git a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp index 7cda54d6b00..a2d0884c4d4 100644 --- a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp +++ b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp @@ -467,40 +467,6 @@ unsigned X86TTIImpl::getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src) { int ISD = TLI->InstructionOpcodeToISD(Opcode); assert(ISD && "Invalid opcode"); - std::pair<unsigned, MVT> LTSrc = TLI->getTypeLegalizationCost(DL, Src); - std::pair<unsigned, MVT> LTDest = TLI->getTypeLegalizationCost(DL, Dst); - - static const TypeConversionCostTblEntry<MVT::SimpleValueType> - SSE2ConvTbl[] = { - // These are somewhat magic numbers justified by looking at the output of - // Intel's IACA, running some kernels and making sure when we take - // legalization into account the throughput will be overestimated. - { ISD::UINT_TO_FP, MVT::v2f64, MVT::v2i64, 2*10 }, - { ISD::UINT_TO_FP, MVT::v2f64, MVT::v4i32, 4*10 }, - { ISD::UINT_TO_FP, MVT::v2f64, MVT::v8i16, 8*10 }, - { ISD::UINT_TO_FP, MVT::v2f64, MVT::v16i8, 16*10 }, - { ISD::SINT_TO_FP, MVT::v2f64, MVT::v2i64, 2*10 }, - { ISD::SINT_TO_FP, MVT::v2f64, MVT::v4i32, 4*10 }, - { ISD::SINT_TO_FP, MVT::v2f64, MVT::v8i16, 8*10 }, - { ISD::SINT_TO_FP, MVT::v2f64, MVT::v16i8, 16*10 }, - // There are faster sequences for float conversions. - { ISD::UINT_TO_FP, MVT::v4f32, MVT::v2i64, 15 }, - { ISD::UINT_TO_FP, MVT::v4f32, MVT::v4i32, 8 }, - { ISD::UINT_TO_FP, MVT::v4f32, MVT::v8i16, 15 }, - { ISD::UINT_TO_FP, MVT::v4f32, MVT::v16i8, 8 }, - { ISD::SINT_TO_FP, MVT::v4f32, MVT::v2i64, 15 }, - { ISD::SINT_TO_FP, MVT::v4f32, MVT::v4i32, 15 }, - { ISD::SINT_TO_FP, MVT::v4f32, MVT::v8i16, 15 }, - { ISD::SINT_TO_FP, MVT::v4f32, MVT::v16i8, 8 }, - }; - - if (ST->hasSSE2() && !ST->hasAVX()) { - int Idx = - ConvertCostTableLookup(SSE2ConvTbl, ISD, LTDest.second, LTSrc.second); - if (Idx != -1) - return LTSrc.first * SSE2ConvTbl[Idx].Cost; - } - static const TypeConversionCostTblEntry<MVT::SimpleValueType> AVX512ConversionTbl[] = { { ISD::FP_EXTEND, MVT::v8f64, MVT::v8f32, 1 }, @@ -534,19 +500,6 @@ unsigned X86TTIImpl::getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src) { { ISD::SINT_TO_FP, MVT::v8f64, MVT::v8i32, 1 }, }; - if (ST->hasAVX512()) { - int Idx = ConvertCostTableLookup(AVX512ConversionTbl, ISD, LTDest.second, - LTSrc.second); - if (Idx != -1) - return AVX512ConversionTbl[Idx].Cost; - } - EVT SrcTy = TLI->getValueType(DL, Src); - EVT DstTy = TLI->getValueType(DL, Dst); - - // The function getSimpleVT only handles simple value types. - if (!SrcTy.isSimple() || !DstTy.isSimple()) - return BaseT::getCastInstrCost(Opcode, Dst, Src); - static const TypeConversionCostTblEntry<MVT::SimpleValueType> AVX2ConversionTbl[] = { { ISD::SIGN_EXTEND, MVT::v16i16, MVT::v16i8, 1 }, @@ -650,6 +603,54 @@ unsigned X86TTIImpl::getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src) { { ISD::FP_TO_UINT, MVT::v4i32, MVT::v4f64, 4*4 }, }; + static const TypeConversionCostTblEntry<MVT::SimpleValueType> + SSE2ConvTbl[] = { + // These are somewhat magic numbers justified by looking at the output of + // Intel's IACA, running some kernels and making sure when we take + // legalization into account the throughput will be overestimated. + { ISD::UINT_TO_FP, MVT::v2f64, MVT::v2i64, 2*10 }, + { ISD::UINT_TO_FP, MVT::v2f64, MVT::v4i32, 4*10 }, + { ISD::UINT_TO_FP, MVT::v2f64, MVT::v8i16, 8*10 }, + { ISD::UINT_TO_FP, MVT::v2f64, MVT::v16i8, 16*10 }, + { ISD::SINT_TO_FP, MVT::v2f64, MVT::v2i64, 2*10 }, + { ISD::SINT_TO_FP, MVT::v2f64, MVT::v4i32, 4*10 }, + { ISD::SINT_TO_FP, MVT::v2f64, MVT::v8i16, 8*10 }, + { ISD::SINT_TO_FP, MVT::v2f64, MVT::v16i8, 16*10 }, + // There are faster sequences for float conversions. + { ISD::UINT_TO_FP, MVT::v4f32, MVT::v2i64, 15 }, + { ISD::UINT_TO_FP, MVT::v4f32, MVT::v4i32, 8 }, + { ISD::UINT_TO_FP, MVT::v4f32, MVT::v8i16, 15 }, + { ISD::UINT_TO_FP, MVT::v4f32, MVT::v16i8, 8 }, + { ISD::SINT_TO_FP, MVT::v4f32, MVT::v2i64, 15 }, + { ISD::SINT_TO_FP, MVT::v4f32, MVT::v4i32, 15 }, + { ISD::SINT_TO_FP, MVT::v4f32, MVT::v8i16, 15 }, + { ISD::SINT_TO_FP, MVT::v4f32, MVT::v16i8, 8 }, + }; + + std::pair<unsigned, MVT> LTSrc = TLI->getTypeLegalizationCost(DL, Src); + std::pair<unsigned, MVT> LTDest = TLI->getTypeLegalizationCost(DL, Dst); + + if (ST->hasSSE2() && !ST->hasAVX()) { + int Idx = + ConvertCostTableLookup(SSE2ConvTbl, ISD, LTDest.second, LTSrc.second); + if (Idx != -1) + return LTSrc.first * SSE2ConvTbl[Idx].Cost; + } + + if (ST->hasAVX512()) { + int Idx = ConvertCostTableLookup(AVX512ConversionTbl, ISD, LTDest.second, + LTSrc.second); + if (Idx != -1) + return AVX512ConversionTbl[Idx].Cost; + } + + EVT SrcTy = TLI->getValueType(DL, Src); + EVT DstTy = TLI->getValueType(DL, Dst); + + // The function getSimpleVT only handles simple value types. + if (!SrcTy.isSimple() || !DstTy.isSimple()) + return BaseT::getCastInstrCost(Opcode, Dst, Src); + if (ST->hasAVX2()) { int Idx = ConvertCostTableLookup(AVX2ConversionTbl, ISD, DstTy.getSimpleVT(), SrcTy.getSimpleVT()); |
