diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/X86/X86TargetTransformInfo.cpp | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp index 1181181a3c5..1e8f1b31214 100644 --- a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp +++ b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp @@ -1568,6 +1568,11 @@ int X86TTIImpl::getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src, { ISD::UINT_TO_FP, MVT::f64, MVT::i64, 4 }, }; + static const TypeConversionCostTblEntry SSE2ConversionTblWide[] = { + { ISD::SINT_TO_FP, MVT::v2f64, MVT::v4i32, 2*10 }, + { ISD::SINT_TO_FP, MVT::v2f64, MVT::v2i32, 2*10 }, + }; + static const TypeConversionCostTblEntry SSE2ConversionTbl[] = { // These are somewhat magic numbers justified by looking at the output of // Intel's IACA, running some kernels and making sure when we take @@ -1633,6 +1638,13 @@ int X86TTIImpl::getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src, std::pair<int, MVT> LTSrc = TLI->getTypeLegalizationCost(DL, Src); std::pair<int, MVT> LTDest = TLI->getTypeLegalizationCost(DL, Dst); + if (ST->hasSSE2() && !ST->hasAVX() && + ExperimentalVectorWideningLegalization) { + if (const auto *Entry = ConvertCostTableLookup(SSE2ConversionTblWide, ISD, + LTDest.second, LTSrc.second)) + return LTSrc.first * Entry->Cost; + } + if (ST->hasSSE2() && !ST->hasAVX()) { if (const auto *Entry = ConvertCostTableLookup(SSE2ConversionTbl, ISD, LTDest.second, LTSrc.second)) @@ -1705,6 +1717,12 @@ int X86TTIImpl::getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src, return Entry->Cost; } + if (ST->hasSSE2() && ExperimentalVectorWideningLegalization) { + if (const auto *Entry = ConvertCostTableLookup(SSE2ConversionTblWide, ISD, + SimpleDstTy, SimpleSrcTy)) + return Entry->Cost; + } + if (ST->hasSSE2()) { if (const auto *Entry = ConvertCostTableLookup(SSE2ConversionTbl, ISD, SimpleDstTy, SimpleSrcTy)) |
