diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/X86/X86TargetTransformInfo.cpp | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp index 7f6dc2b2164..a2cc73addf4 100644 --- a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp +++ b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp @@ -400,6 +400,32 @@ int X86TTIImpl::getArithmeticInstrCost( ISD = ISD::MUL; } + static const CostTblEntry SSE41CostTable[] = { + { ISD::SHL, MVT::v16i8, 11 }, // pblendvb sequence. + { ISD::SHL, MVT::v32i8, 2*11 }, // pblendvb sequence. + { ISD::SHL, MVT::v8i16, 14 }, // pblendvb sequence. + { ISD::SHL, MVT::v16i16, 2*14 }, // pblendvb sequence. + + { ISD::SRL, MVT::v16i8, 12 }, // pblendvb sequence. + { ISD::SRL, MVT::v32i8, 2*12 }, // pblendvb sequence. + { ISD::SRL, MVT::v8i16, 14 }, // pblendvb sequence. + { ISD::SRL, MVT::v16i16, 2*14 }, // pblendvb sequence. + { ISD::SRL, MVT::v4i32, 11 }, // Shift each lane + blend. + { ISD::SRL, MVT::v8i32, 2*11 }, // Shift each lane + blend. + + { ISD::SRA, MVT::v16i8, 24 }, // pblendvb sequence. + { ISD::SRA, MVT::v32i8, 2*24 }, // pblendvb sequence. + { ISD::SRA, MVT::v8i16, 14 }, // pblendvb sequence. + { ISD::SRA, MVT::v16i16, 2*14 }, // pblendvb sequence. + { ISD::SRA, MVT::v4i32, 12 }, // Shift each lane + blend. + { ISD::SRA, MVT::v8i32, 2*12 }, // Shift each lane + blend. + }; + + if (ST->hasSSE41()) { + if (const auto *Entry = CostTableLookup(SSE41CostTable, ISD, LT.second)) + return LT.first * Entry->Cost; + } + static const CostTblEntry SSE2CostTable[] = { // We don't correctly identify costs of casts because they are marked as // custom. |
