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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2017-01-05 19:01:50 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2017-01-05 19:01:50 +0000 |
| commit | a8bf97569a46440727d45d91819d38b340a217d3 (patch) | |
| tree | 50a9ac3a16f43e0856534e2a98fd4d2b5cfbbccf | |
| parent | 7353cf462349e8295d44c17daac6f446f5ae446a (diff) | |
| download | llvm-a8bf97569a46440727d45d91819d38b340a217d3.zip llvm-a8bf97569a46440727d45d91819d38b340a217d3.tar.gz llvm-a8bf97569a46440727d45d91819d38b340a217d3.tar.bz2 | |
[CostModel][X86] Move vXi64 MUL costs into existing tables. NFCI.
Removes need for yet another LUT.
llvm-svn: 291158
| -rw-r--r-- | llvm/lib/Target/X86/X86TargetTransformInfo.cpp | 14 |
1 files changed, 3 insertions, 11 deletions
diff --git a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp index 9f28547..a4a040f 100644 --- a/llvm/lib/Target/X86/X86TargetTransformInfo.cpp +++ b/llvm/lib/Target/X86/X86TargetTransformInfo.cpp @@ -253,6 +253,7 @@ int X86TTIImpl::getArithmeticInstrCost( { ISD::MUL, MVT::v32i8, 13 }, // extend/pmullw/trunc sequence. { ISD::MUL, MVT::v16i8, 5 }, // extend/pmullw/trunc sequence. + { ISD::MUL, MVT::v8i64, 8 } // 3*pmuludq/3*shift/2*add }; if (ST->hasAVX512()) { @@ -337,6 +338,7 @@ int X86TTIImpl::getArithmeticInstrCost( { ISD::MUL, MVT::v32i8, 17 }, // extend/pmullw/trunc sequence. { ISD::MUL, MVT::v16i8, 7 }, // extend/pmullw/trunc sequence. + { ISD::MUL, MVT::v4i64, 8 }, // 3*pmuludq/3*shift/2*add { ISD::FDIV, MVT::f32, 7 }, // Haswell from http://www.agner.org/ { ISD::FDIV, MVT::v4f32, 7 }, // Haswell from http://www.agner.org/ @@ -504,6 +506,7 @@ int X86TTIImpl::getArithmeticInstrCost( { ISD::SRA, MVT::v4i64, 2*12 }, // srl/xor/sub sequence. { ISD::MUL, MVT::v16i8, 12 }, // extend/pmullw/trunc sequence. + { ISD::MUL, MVT::v2i64, 8 }, // 3*pmuludq/3*shift/2*add { ISD::FDIV, MVT::f32, 23 }, // Pentium IV from http://www.agner.org/ { ISD::FDIV, MVT::v4f32, 39 }, // Pentium IV from http://www.agner.org/ @@ -561,17 +564,6 @@ int X86TTIImpl::getArithmeticInstrCost( return LT.first * Entry->Cost; } - // Custom lowering of vectors. - static const CostTblEntry CustomLowered[] = { - // A v2i64/v4i64 and multiply is custom lowered as a series of long - // multiplies(3), shifts(3) and adds(2). - { ISD::MUL, MVT::v2i64, 8 }, - { ISD::MUL, MVT::v4i64, 8 }, - { ISD::MUL, MVT::v8i64, 8 } - }; - if (const auto *Entry = CostTableLookup(CustomLowered, ISD, LT.second)) - return LT.first * Entry->Cost; - // Special lowering of v4i32 mul on sse2, sse3: Lower v4i32 mul as 2x shuffle, // 2x pmuludq, 2x shuffle. if (ISD == ISD::MUL && LT.second == MVT::v4i32 && ST->hasSSE2() && |