return Cost;
}
- static const CostTblEntry<MVT::SimpleValueType>
- AVX2UniformConstCostTable[] = {
+ static const CostTblEntry AVX2UniformConstCostTable[] = {
{ ISD::SRA, MVT::v4i64, 4 }, // 2 x psrad + shuffle.
{ ISD::SDIV, MVT::v16i16, 6 }, // vpmulhw sequence
return LT.first * Entry->Cost;
}
- static const CostTblEntry<MVT::SimpleValueType> AVX512CostTable[] = {
+ static const CostTblEntry AVX512CostTable[] = {
{ ISD::SHL, MVT::v16i32, 1 },
{ ISD::SRL, MVT::v16i32, 1 },
{ ISD::SRA, MVT::v16i32, 1 },
return LT.first * Entry->Cost;
}
- static const CostTblEntry<MVT::SimpleValueType> AVX2CostTable[] = {
+ static const CostTblEntry AVX2CostTable[] = {
// Shifts on v4i64/v8i32 on AVX2 is legal even though we declare to
// customize them to detect the cases where shift amount is a scalar one.
{ ISD::SHL, MVT::v4i32, 1 },
return LT.first * Entry->Cost;
}
- static const CostTblEntry<MVT::SimpleValueType> XOPCostTable[] = {
+ static const CostTblEntry XOPCostTable[] = {
// 128bit shifts take 1cy, but right shifts require negation beforehand.
{ ISD::SHL, MVT::v16i8, 1 },
{ ISD::SRL, MVT::v16i8, 2 },
return LT.first * Entry->Cost;
}
- static const CostTblEntry<MVT::SimpleValueType> AVX2CustomCostTable[] = {
+ static const CostTblEntry AVX2CustomCostTable[] = {
{ ISD::SHL, MVT::v32i8, 11 }, // vpblendvb sequence.
{ ISD::SHL, MVT::v16i16, 10 }, // extend/vpsrlvd/pack sequence.
return LT.first * Entry->Cost;
}
- static const CostTblEntry<MVT::SimpleValueType>
+ static const CostTblEntry
SSE2UniformConstCostTable[] = {
// We don't correctly identify costs of casts because they are marked as
// custom.
ISD = ISD::MUL;
}
- static const CostTblEntry<MVT::SimpleValueType> SSE2CostTable[] = {
+ static const CostTblEntry SSE2CostTable[] = {
// We don't correctly identify costs of casts because they are marked as
// custom.
// For some cases, where the shift amount is a scalar we would be able
return LT.first * Entry->Cost;
}
- static const CostTblEntry<MVT::SimpleValueType> AVX1CostTable[] = {
+ static const CostTblEntry AVX1CostTable[] = {
// We don't have to scalarize unsupported ops. We can issue two half-sized
// operations and we only need to extract the upper YMM half.
// Two ops + 1 extract + 1 insert = 4.
}
// Custom lowering of vectors.
- static const CostTblEntry<MVT::SimpleValueType> CustomLowered[] = {
+ static const CostTblEntry CustomLowered[] = {
// A v2i64/v4i64 and multiply is custom lowered as a series of long
// multiplies(3), shifts(4) and adds(2).
{ ISD::MUL, MVT::v2i64, 9 },
if (ST->hasAVX2() && LT.second == MVT::v16i16)
return LT.first;
- static const CostTblEntry<MVT::SimpleValueType> AVXAltShuffleTbl[] = {
+ static const CostTblEntry AVXAltShuffleTbl[] = {
{ISD::VECTOR_SHUFFLE, MVT::v4i64, 1}, // vblendpd
{ISD::VECTOR_SHUFFLE, MVT::v4f64, 1}, // vblendpd
ISD::VECTOR_SHUFFLE, LT.second))
return LT.first * Entry->Cost;
- static const CostTblEntry<MVT::SimpleValueType> SSE41AltShuffleTbl[] = {
+ static const CostTblEntry SSE41AltShuffleTbl[] = {
// These are lowered into movsd.
{ISD::VECTOR_SHUFFLE, MVT::v2i64, 1},
{ISD::VECTOR_SHUFFLE, MVT::v2f64, 1},
LT.second))
return LT.first * Entry->Cost;
- static const CostTblEntry<MVT::SimpleValueType> SSSE3AltShuffleTbl[] = {
+ static const CostTblEntry SSSE3AltShuffleTbl[] = {
{ISD::VECTOR_SHUFFLE, MVT::v2i64, 1}, // movsd
{ISD::VECTOR_SHUFFLE, MVT::v2f64, 1}, // movsd
ISD::VECTOR_SHUFFLE, LT.second))
return LT.first * Entry->Cost;
- static const CostTblEntry<MVT::SimpleValueType> SSEAltShuffleTbl[] = {
+ static const CostTblEntry SSEAltShuffleTbl[] = {
{ISD::VECTOR_SHUFFLE, MVT::v2i64, 1}, // movsd
{ISD::VECTOR_SHUFFLE, MVT::v2f64, 1}, // movsd
int ISD = TLI->InstructionOpcodeToISD(Opcode);
assert(ISD && "Invalid opcode");
- static const TypeConversionCostTblEntry<MVT::SimpleValueType>
- AVX512ConversionTbl[] = {
+ // FIXME: Need a better design of the cost table to handle non-simple types of
+ // potential massive combinations (elem_num x src_type x dst_type).
+
+ static const TypeConversionCostTblEntry AVX512DQConversionTbl[] = {
+ { ISD::UINT_TO_FP, MVT::v2f64, MVT::v2i64, 1 },
+ { ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i64, 1 },
+ { ISD::UINT_TO_FP, MVT::v8f64, MVT::v8i64, 1 },
+ { ISD::UINT_TO_FP, MVT::v2f32, MVT::v2i64, 1 },
+ { ISD::UINT_TO_FP, MVT::v4f32, MVT::v4i64, 1 },
+ { ISD::UINT_TO_FP, MVT::v8f32, MVT::v8i64, 1 },
+
+ { ISD::FP_TO_UINT, MVT::v2i64, MVT::v2f64, 1 },
+ { ISD::FP_TO_UINT, MVT::v4i64, MVT::v4f64, 1 },
+ { ISD::FP_TO_UINT, MVT::v8i64, MVT::v8f64, 1 },
+ { ISD::FP_TO_UINT, MVT::v2i64, MVT::v2f32, 1 },
+ { ISD::FP_TO_UINT, MVT::v4i64, MVT::v4f32, 1 },
+ { ISD::FP_TO_UINT, MVT::v8i64, MVT::v8f32, 1 },
+ };
+
+ static const TypeConversionCostTblEntry AVX512FConversionTbl[] = {
{ ISD::FP_EXTEND, MVT::v8f64, MVT::v8f32, 1 },
{ ISD::FP_EXTEND, MVT::v8f64, MVT::v16f32, 3 },
{ ISD::FP_ROUND, MVT::v8f32, MVT::v8f64, 1 },
- { ISD::FP_ROUND, MVT::v16f32, MVT::v8f64, 3 },
{ ISD::TRUNCATE, MVT::v16i8, MVT::v16i32, 1 },
{ ISD::TRUNCATE, MVT::v16i16, MVT::v16i32, 1 },
{ ISD::TRUNCATE, MVT::v8i16, MVT::v8i64, 1 },
{ ISD::TRUNCATE, MVT::v8i32, MVT::v8i64, 1 },
- { ISD::TRUNCATE, MVT::v16i32, MVT::v8i64, 4 },
// v16i1 -> v16i32 - load + broadcast
{ ISD::SIGN_EXTEND, MVT::v16i32, MVT::v16i1, 2 },
{ ISD::ZERO_EXTEND, MVT::v16i32, MVT::v16i8, 1 },
{ ISD::SIGN_EXTEND, MVT::v16i32, MVT::v16i16, 1 },
{ ISD::ZERO_EXTEND, MVT::v16i32, MVT::v16i16, 1 },
- { ISD::SIGN_EXTEND, MVT::v8i64, MVT::v16i32, 3 },
- { ISD::ZERO_EXTEND, MVT::v8i64, MVT::v16i32, 3 },
+ { ISD::SIGN_EXTEND, MVT::v8i64, MVT::v8i32, 1 },
+ { ISD::ZERO_EXTEND, MVT::v8i64, MVT::v8i32, 1 },
+ { ISD::ZERO_EXTEND, MVT::v8i64, MVT::v8i16, 1 },
+ { ISD::SIGN_EXTEND, MVT::v8i64, MVT::v8i16, 1 },
{ ISD::SINT_TO_FP, MVT::v16f32, MVT::v16i1, 3 },
{ ISD::SINT_TO_FP, MVT::v16f32, MVT::v16i8, 2 },
{ ISD::SINT_TO_FP, MVT::v16f32, MVT::v16i16, 2 },
{ ISD::SINT_TO_FP, MVT::v16f32, MVT::v16i32, 1 },
{ ISD::SINT_TO_FP, MVT::v8f64, MVT::v8i1, 4 },
+ { ISD::SINT_TO_FP, MVT::v8f64, MVT::v8i8, 2 },
{ ISD::SINT_TO_FP, MVT::v8f64, MVT::v8i16, 2 },
{ ISD::SINT_TO_FP, MVT::v8f64, MVT::v8i32, 1 },
+
+ { ISD::UINT_TO_FP, MVT::v16f32, MVT::v16i1, 3 },
+ { ISD::UINT_TO_FP, MVT::v16f32, MVT::v16i8, 2 },
+ { ISD::UINT_TO_FP, MVT::v16f32, MVT::v16i16, 2 },
+ { ISD::UINT_TO_FP, MVT::v16f32, MVT::v16i32, 1 },
+ { ISD::UINT_TO_FP, MVT::v8f32, MVT::v8i32, 1 },
+ { ISD::UINT_TO_FP, MVT::v4f32, MVT::v4i32, 1 },
+ { ISD::UINT_TO_FP, MVT::v8f64, MVT::v8i1, 4 },
+ { ISD::UINT_TO_FP, MVT::v8f64, MVT::v8i16, 2 },
+ { ISD::UINT_TO_FP, MVT::v8f64, MVT::v8i32, 1 },
+ { ISD::UINT_TO_FP, MVT::v8f64, MVT::v8i8, 2 },
+ { ISD::UINT_TO_FP, MVT::v8f32, MVT::v8i8, 2 },
+ { ISD::UINT_TO_FP, MVT::v8f32, MVT::v8i16, 2 },
+ { ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i8, 2 },
+ { ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i16, 2 },
+ { ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i32, 1 },
+ { ISD::UINT_TO_FP, MVT::v2f64, MVT::v2i8, 2 },
+ { ISD::UINT_TO_FP, MVT::v2f64, MVT::v2i16, 5 },
+ { ISD::UINT_TO_FP, MVT::v2f32, MVT::v2i32, 2 },
+ { ISD::UINT_TO_FP, MVT::v2f64, MVT::v2i64, 5 },
+ { ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i64, 12 },
+ { ISD::UINT_TO_FP, MVT::v8f64, MVT::v8i64, 26 },
+
+ { ISD::FP_TO_UINT, MVT::v2i32, MVT::v2f32, 1 },
+ { ISD::FP_TO_UINT, MVT::v4i32, MVT::v4f32, 1 },
+ { ISD::FP_TO_UINT, MVT::v8i32, MVT::v8f32, 1 },
+ { ISD::FP_TO_UINT, MVT::v16i32, MVT::v16f32, 1 },
};
- static const TypeConversionCostTblEntry<MVT::SimpleValueType>
- AVX2ConversionTbl[] = {
+ static const TypeConversionCostTblEntry AVX2ConversionTbl[] = {
{ ISD::SIGN_EXTEND, MVT::v16i16, MVT::v16i8, 1 },
{ ISD::ZERO_EXTEND, MVT::v16i16, MVT::v16i8, 1 },
{ ISD::SIGN_EXTEND, MVT::v8i32, MVT::v8i1, 3 },
{ ISD::UINT_TO_FP, MVT::v8f32, MVT::v8i32, 8 },
};
- static const TypeConversionCostTblEntry<MVT::SimpleValueType>
- AVXConversionTbl[] = {
+ static const TypeConversionCostTblEntry AVXConversionTbl[] = {
{ ISD::SIGN_EXTEND, MVT::v16i16, MVT::v16i8, 4 },
{ ISD::ZERO_EXTEND, MVT::v16i16, MVT::v16i8, 4 },
{ ISD::SIGN_EXTEND, MVT::v8i32, MVT::v8i1, 7 },
{ ISD::FP_TO_UINT, MVT::v4i32, MVT::v4f64, 4*4 },
};
- static const TypeConversionCostTblEntry<MVT::SimpleValueType>
- SSE2ConvTbl[] = {
+ static const TypeConversionCostTblEntry SSE41ConversionTbl[] = {
+ { ISD::ZERO_EXTEND, MVT::v16i32, MVT::v16i16, 4 },
+ { ISD::SIGN_EXTEND, MVT::v16i32, MVT::v16i16, 4 },
+ { ISD::ZERO_EXTEND, MVT::v8i32, MVT::v8i16, 2 },
+ { ISD::SIGN_EXTEND, MVT::v8i32, MVT::v8i16, 2 },
+ { ISD::ZERO_EXTEND, MVT::v4i32, MVT::v4i16, 1 },
+ { ISD::SIGN_EXTEND, MVT::v4i32, MVT::v4i16, 1 },
+ { ISD::ZERO_EXTEND, MVT::v16i32, MVT::v16i8, 4 },
+ { ISD::SIGN_EXTEND, MVT::v16i32, MVT::v16i8, 4 },
+ { ISD::ZERO_EXTEND, MVT::v8i32, MVT::v8i8, 2 },
+ { ISD::SIGN_EXTEND, MVT::v8i32, MVT::v8i8, 2 },
+ { ISD::ZERO_EXTEND, MVT::v4i32, MVT::v4i8, 1 },
+ { ISD::SIGN_EXTEND, MVT::v4i32, MVT::v4i8, 1 },
+ { ISD::ZERO_EXTEND, MVT::v16i16, MVT::v16i8, 2 },
+ { ISD::SIGN_EXTEND, MVT::v16i16, MVT::v16i8, 2 },
+ { ISD::ZERO_EXTEND, MVT::v8i16, MVT::v8i8, 1 },
+ { ISD::SIGN_EXTEND, MVT::v8i16, MVT::v8i8, 1 },
+ { ISD::ZERO_EXTEND, MVT::v4i16, MVT::v4i8, 1 },
+ { ISD::SIGN_EXTEND, MVT::v4i16, MVT::v4i8, 2 },
+
+ { ISD::TRUNCATE, MVT::v16i16, MVT::v16i32, 6 },
+ { ISD::TRUNCATE, MVT::v8i16, MVT::v8i32, 3 },
+ { ISD::TRUNCATE, MVT::v4i16, MVT::v4i32, 1 },
+ { ISD::TRUNCATE, MVT::v16i8, MVT::v16i32, 30 },
+ { ISD::TRUNCATE, MVT::v8i8, MVT::v8i32, 3 },
+ { ISD::TRUNCATE, MVT::v4i8, MVT::v4i32, 1 },
+ { ISD::TRUNCATE, MVT::v16i8, MVT::v16i16, 3 },
+ { ISD::TRUNCATE, MVT::v8i8, MVT::v8i16, 1 },
+ { ISD::TRUNCATE, MVT::v4i8, MVT::v4i16, 2 },
+ };
+
+ 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
// legalization into account the throughput will be overestimated.
{ 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 },
+
+ { ISD::ZERO_EXTEND, MVT::v16i32, MVT::v16i16, 6 },
+ { ISD::SIGN_EXTEND, MVT::v16i32, MVT::v16i16, 8 },
+ { ISD::ZERO_EXTEND, MVT::v8i32, MVT::v8i16, 3 },
+ { ISD::SIGN_EXTEND, MVT::v8i32, MVT::v8i16, 4 },
+ { ISD::ZERO_EXTEND, MVT::v4i32, MVT::v4i16, 1 },
+ { ISD::SIGN_EXTEND, MVT::v4i32, MVT::v4i16, 2 },
+ { ISD::ZERO_EXTEND, MVT::v16i32, MVT::v16i8, 9 },
+ { ISD::SIGN_EXTEND, MVT::v16i32, MVT::v16i8, 12 },
+ { ISD::ZERO_EXTEND, MVT::v8i32, MVT::v8i8, 6 },
+ { ISD::SIGN_EXTEND, MVT::v8i32, MVT::v8i8, 6 },
+ { ISD::ZERO_EXTEND, MVT::v4i32, MVT::v4i8, 2 },
+ { ISD::SIGN_EXTEND, MVT::v4i32, MVT::v4i8, 3 },
+ { ISD::ZERO_EXTEND, MVT::v16i16, MVT::v16i8, 3 },
+ { ISD::SIGN_EXTEND, MVT::v16i16, MVT::v16i8, 4 },
+ { ISD::ZERO_EXTEND, MVT::v8i16, MVT::v8i8, 1 },
+ { ISD::SIGN_EXTEND, MVT::v8i16, MVT::v8i8, 2 },
+ { ISD::ZERO_EXTEND, MVT::v4i16, MVT::v4i8, 1 },
+ { ISD::SIGN_EXTEND, MVT::v4i16, MVT::v4i8, 6 },
+
+ { ISD::TRUNCATE, MVT::v16i16, MVT::v16i32, 10 },
+ { ISD::TRUNCATE, MVT::v8i16, MVT::v8i32, 5 },
+ { ISD::TRUNCATE, MVT::v4i16, MVT::v4i32, 3 },
+ { ISD::TRUNCATE, MVT::v16i8, MVT::v16i32, 7 },
+ { ISD::TRUNCATE, MVT::v8i8, MVT::v8i32, 4 },
+ { ISD::TRUNCATE, MVT::v4i8, MVT::v4i32, 3 },
+ { ISD::TRUNCATE, MVT::v16i8, MVT::v16i16, 3 },
+ { ISD::TRUNCATE, MVT::v8i8, MVT::v8i16, 2 },
+ { ISD::TRUNCATE, MVT::v4i8, MVT::v4i16, 4 },
};
std::pair<int, MVT> LTSrc = TLI->getTypeLegalizationCost(DL, Src);
std::pair<int, MVT> LTDest = TLI->getTypeLegalizationCost(DL, Dst);
if (ST->hasSSE2() && !ST->hasAVX()) {
- if (const auto *Entry = ConvertCostTableLookup(SSE2ConvTbl, ISD,
+ if (const auto *Entry = ConvertCostTableLookup(SSE2ConversionTbl, ISD,
LTDest.second, LTSrc.second))
return LTSrc.first * Entry->Cost;
}
- if (ST->hasAVX512()) {
- if (const auto *Entry = ConvertCostTableLookup(AVX512ConversionTbl, ISD,
- LTDest.second, LTSrc.second))
- return Entry->Cost;
- }
-
EVT SrcTy = TLI->getValueType(DL, Src);
EVT DstTy = TLI->getValueType(DL, Dst);
if (!SrcTy.isSimple() || !DstTy.isSimple())
return BaseT::getCastInstrCost(Opcode, Dst, Src);
+ if (ST->hasDQI())
+ if (const auto *Entry = ConvertCostTableLookup(AVX512DQConversionTbl, ISD,
+ DstTy.getSimpleVT(),
+ SrcTy.getSimpleVT()))
+ return Entry->Cost;
+
+ if (ST->hasAVX512())
+ if (const auto *Entry = ConvertCostTableLookup(AVX512FConversionTbl, ISD,
+ DstTy.getSimpleVT(),
+ SrcTy.getSimpleVT()))
+ return Entry->Cost;
+
if (ST->hasAVX2()) {
if (const auto *Entry = ConvertCostTableLookup(AVX2ConversionTbl, ISD,
DstTy.getSimpleVT(),
return Entry->Cost;
}
+ if (ST->hasSSE41()) {
+ if (const auto *Entry = ConvertCostTableLookup(SSE41ConversionTbl, ISD,
+ DstTy.getSimpleVT(),
+ SrcTy.getSimpleVT()))
+ return Entry->Cost;
+ }
+
+ if (ST->hasSSE2()) {
+ if (const auto *Entry = ConvertCostTableLookup(SSE2ConversionTbl, ISD,
+ DstTy.getSimpleVT(),
+ SrcTy.getSimpleVT()))
+ return Entry->Cost;
+ }
+
return BaseT::getCastInstrCost(Opcode, Dst, Src);
}
int ISD = TLI->InstructionOpcodeToISD(Opcode);
assert(ISD && "Invalid opcode");
- static const CostTblEntry<MVT::SimpleValueType> SSE42CostTbl[] = {
+ static const CostTblEntry SSE42CostTbl[] = {
{ ISD::SETCC, MVT::v2f64, 1 },
{ ISD::SETCC, MVT::v4f32, 1 },
{ ISD::SETCC, MVT::v2i64, 1 },
{ ISD::SETCC, MVT::v16i8, 1 },
};
- static const CostTblEntry<MVT::SimpleValueType> AVX1CostTbl[] = {
+ static const CostTblEntry AVX1CostTbl[] = {
{ ISD::SETCC, MVT::v4f64, 1 },
{ ISD::SETCC, MVT::v8f32, 1 },
// AVX1 does not support 8-wide integer compare.
{ ISD::SETCC, MVT::v32i8, 4 },
};
- static const CostTblEntry<MVT::SimpleValueType> AVX2CostTbl[] = {
+ static const CostTblEntry AVX2CostTbl[] = {
{ ISD::SETCC, MVT::v4i64, 1 },
{ ISD::SETCC, MVT::v8i32, 1 },
{ ISD::SETCC, MVT::v16i16, 1 },
{ ISD::SETCC, MVT::v32i8, 1 },
};
- static const CostTblEntry<MVT::SimpleValueType> AVX512CostTbl[] = {
+ static const CostTblEntry AVX512CostTbl[] = {
{ ISD::SETCC, MVT::v8i64, 1 },
{ ISD::SETCC, MVT::v16i32, 1 },
{ ISD::SETCC, MVT::v8f64, 1 },
// Legalize the type.
std::pair<int, MVT> LT = TLI->getTypeLegalizationCost(DL, SrcVTy);
+ auto VT = TLI->getValueType(DL, SrcVTy);
int Cost = 0;
- if (LT.second != TLI->getValueType(DL, SrcVTy).getSimpleVT() &&
+ if (VT.isSimple() && LT.second != VT.getSimpleVT() &&
LT.second.getVectorNumElements() == NumElem)
// Promotion requires expand/truncate for data and a shuffle for mask.
Cost += getShuffleCost(TTI::SK_Alternate, SrcVTy, 0, nullptr) +
// We use the Intel Architecture Code Analyzer(IACA) to measure the throughput
// and make it as the cost.
- static const CostTblEntry<MVT::SimpleValueType> SSE42CostTblPairWise[] = {
+ static const CostTblEntry SSE42CostTblPairWise[] = {
{ ISD::FADD, MVT::v2f64, 2 },
{ ISD::FADD, MVT::v4f32, 4 },
{ ISD::ADD, MVT::v2i64, 2 }, // The data reported by the IACA tool is "1.6".
{ ISD::ADD, MVT::v8i16, 5 },
};
- static const CostTblEntry<MVT::SimpleValueType> AVX1CostTblPairWise[] = {
+ static const CostTblEntry AVX1CostTblPairWise[] = {
{ ISD::FADD, MVT::v4f32, 4 },
{ ISD::FADD, MVT::v4f64, 5 },
{ ISD::FADD, MVT::v8f32, 7 },
{ ISD::ADD, MVT::v8i32, 5 },
};
- static const CostTblEntry<MVT::SimpleValueType> SSE42CostTblNoPairWise[] = {
+ static const CostTblEntry SSE42CostTblNoPairWise[] = {
{ ISD::FADD, MVT::v2f64, 2 },
{ ISD::FADD, MVT::v4f32, 4 },
{ ISD::ADD, MVT::v2i64, 2 }, // The data reported by the IACA tool is "1.6".
{ ISD::ADD, MVT::v8i16, 4 }, // The data reported by the IACA tool is "4.3".
};
- static const CostTblEntry<MVT::SimpleValueType> AVX1CostTblNoPairWise[] = {
+ static const CostTblEntry AVX1CostTblNoPairWise[] = {
{ ISD::FADD, MVT::v4f32, 3 },
{ ISD::FADD, MVT::v4f64, 3 },
{ ISD::FADD, MVT::v8f32, 4 },
case Instruction::Store:
ImmIdx = 0;
break;
+ case Instruction::ICmp:
+ // This is an imperfect hack to prevent constant hoisting of
+ // compares that might be trying to check if a 64-bit value fits in
+ // 32-bits. The backend can optimize these cases using a right shift by 32.
+ // Ideally we would check the compare predicate here. There also other
+ // similar immediates the backend can use shifts for.
+ if (Idx == 1 && Imm.getBitWidth() == 64) {
+ uint64_t ImmVal = Imm.getZExtValue();
+ if (ImmVal == 0x100000000ULL || ImmVal == 0xffffffff)
+ return TTI::TCC_Free;
+ }
+ ImmIdx = 1;
+ break;
case Instruction::And:
// We support 64-bit ANDs with immediates with 32-bits of leading zeroes
// by using a 32-bit operation with implicit zero extension. Detect such
case Instruction::SRem:
case Instruction::Or:
case Instruction::Xor:
- case Instruction::ICmp:
ImmIdx = 1;
break;
// Always return TCC_Free for the shift value of a shift instruction.
return X86TTIImpl::getIntImmCost(Imm, Ty);
}
+// Return an average cost of Gather / Scatter instruction, maybe improved later
+int X86TTIImpl::getGSVectorCost(unsigned Opcode, Type *SrcVTy, Value *Ptr,
+ unsigned Alignment, unsigned AddressSpace) {
+
+ assert(isa<VectorType>(SrcVTy) && "Unexpected type in getGSVectorCost");
+ unsigned VF = SrcVTy->getVectorNumElements();
+
+ // Try to reduce index size from 64 bit (default for GEP)
+ // to 32. It is essential for VF 16. If the index can't be reduced to 32, the
+ // operation will use 16 x 64 indices which do not fit in a zmm and needs
+ // to split. Also check that the base pointer is the same for all lanes,
+ // and that there's at most one variable index.
+ auto getIndexSizeInBits = [](Value *Ptr, const DataLayout& DL) {
+ unsigned IndexSize = DL.getPointerSizeInBits();
+ GetElementPtrInst *GEP = dyn_cast<GetElementPtrInst>(Ptr);
+ if (IndexSize < 64 || !GEP)
+ return IndexSize;
+
+ unsigned NumOfVarIndices = 0;
+ Value *Ptrs = GEP->getPointerOperand();
+ if (Ptrs->getType()->isVectorTy() && !getSplatValue(Ptrs))
+ return IndexSize;
+ for (unsigned i = 1; i < GEP->getNumOperands(); ++i) {
+ if (isa<Constant>(GEP->getOperand(i)))
+ continue;
+ Type *IndxTy = GEP->getOperand(i)->getType();
+ if (IndxTy->isVectorTy())
+ IndxTy = IndxTy->getVectorElementType();
+ if ((IndxTy->getPrimitiveSizeInBits() == 64 &&
+ !isa<SExtInst>(GEP->getOperand(i))) ||
+ ++NumOfVarIndices > 1)
+ return IndexSize; // 64
+ }
+ return (unsigned)32;
+ };
+
+
+ // Trying to reduce IndexSize to 32 bits for vector 16.
+ // By default the IndexSize is equal to pointer size.
+ unsigned IndexSize = (VF >= 16) ? getIndexSizeInBits(Ptr, DL) :
+ DL.getPointerSizeInBits();
+
+ Type *IndexVTy = VectorType::get(IntegerType::get(getGlobalContext(),
+ IndexSize), VF);
+ std::pair<int, MVT> IdxsLT = TLI->getTypeLegalizationCost(DL, IndexVTy);
+ std::pair<int, MVT> SrcLT = TLI->getTypeLegalizationCost(DL, SrcVTy);
+ int SplitFactor = std::max(IdxsLT.first, SrcLT.first);
+ if (SplitFactor > 1) {
+ // Handle splitting of vector of pointers
+ Type *SplitSrcTy = VectorType::get(SrcVTy->getScalarType(), VF / SplitFactor);
+ return SplitFactor * getGSVectorCost(Opcode, SplitSrcTy, Ptr, Alignment,
+ AddressSpace);
+ }
+
+ // The gather / scatter cost is given by Intel architects. It is a rough
+ // number since we are looking at one instruction in a time.
+ const int GSOverhead = 2;
+ return GSOverhead + VF * getMemoryOpCost(Opcode, SrcVTy->getScalarType(),
+ Alignment, AddressSpace);
+}
+
+/// Return the cost of full scalarization of gather / scatter operation.
+///
+/// Opcode - Load or Store instruction.
+/// SrcVTy - The type of the data vector that should be gathered or scattered.
+/// VariableMask - The mask is non-constant at compile time.
+/// Alignment - Alignment for one element.
+/// AddressSpace - pointer[s] address space.
+///
+int X86TTIImpl::getGSScalarCost(unsigned Opcode, Type *SrcVTy,
+ bool VariableMask, unsigned Alignment,
+ unsigned AddressSpace) {
+ unsigned VF = SrcVTy->getVectorNumElements();
+
+ int MaskUnpackCost = 0;
+ if (VariableMask) {
+ VectorType *MaskTy =
+ VectorType::get(Type::getInt1Ty(getGlobalContext()), VF);
+ MaskUnpackCost = getScalarizationOverhead(MaskTy, false, true);
+ int ScalarCompareCost =
+ getCmpSelInstrCost(Instruction::ICmp, Type::getInt1Ty(getGlobalContext()),
+ nullptr);
+ int BranchCost = getCFInstrCost(Instruction::Br);
+ MaskUnpackCost += VF * (BranchCost + ScalarCompareCost);
+ }
+
+ // The cost of the scalar loads/stores.
+ int MemoryOpCost = VF * getMemoryOpCost(Opcode, SrcVTy->getScalarType(),
+ Alignment, AddressSpace);
+
+ int InsertExtractCost = 0;
+ if (Opcode == Instruction::Load)
+ for (unsigned i = 0; i < VF; ++i)
+ // Add the cost of inserting each scalar load into the vector
+ InsertExtractCost +=
+ getVectorInstrCost(Instruction::InsertElement, SrcVTy, i);
+ else
+ for (unsigned i = 0; i < VF; ++i)
+ // Add the cost of extracting each element out of the data vector
+ InsertExtractCost +=
+ getVectorInstrCost(Instruction::ExtractElement, SrcVTy, i);
+
+ return MemoryOpCost + MaskUnpackCost + InsertExtractCost;
+}
+
+/// Calculate the cost of Gather / Scatter operation
+int X86TTIImpl::getGatherScatterOpCost(unsigned Opcode, Type *SrcVTy,
+ Value *Ptr, bool VariableMask,
+ unsigned Alignment) {
+ assert(SrcVTy->isVectorTy() && "Unexpected data type for Gather/Scatter");
+ unsigned VF = SrcVTy->getVectorNumElements();
+ PointerType *PtrTy = dyn_cast<PointerType>(Ptr->getType());
+ if (!PtrTy && Ptr->getType()->isVectorTy())
+ PtrTy = dyn_cast<PointerType>(Ptr->getType()->getVectorElementType());
+ assert(PtrTy && "Unexpected type for Ptr argument");
+ unsigned AddressSpace = PtrTy->getAddressSpace();
+
+ bool Scalarize = false;
+ if ((Opcode == Instruction::Load && !isLegalMaskedGather(SrcVTy)) ||
+ (Opcode == Instruction::Store && !isLegalMaskedScatter(SrcVTy)))
+ Scalarize = true;
+ // Gather / Scatter for vector 2 is not profitable on KNL / SKX
+ // Vector-4 of gather/scatter instruction does not exist on KNL.
+ // We can extend it to 8 elements, but zeroing upper bits of
+ // the mask vector will add more instructions. Right now we give the scalar
+ // cost of vector-4 for KNL. TODO: Check, maybe the gather/scatter instruction is
+ // better in the VariableMask case.
+ if (VF == 2 || (VF == 4 && !ST->hasVLX()))
+ Scalarize = true;
+
+ if (Scalarize)
+ return getGSScalarCost(Opcode, SrcVTy, VariableMask, Alignment, AddressSpace);
+
+ return getGSVectorCost(Opcode, SrcVTy, Ptr, Alignment, AddressSpace);
+}
+
bool X86TTIImpl::isLegalMaskedLoad(Type *DataTy) {
Type *ScalarTy = DataTy->getScalarType();
- // TODO: Pointers should also be legal,
- // but it requires additional support in composing intrinsics name.
- // getPrimitiveSizeInBits() returns 0 for PointerType
- int DataWidth = ScalarTy->getPrimitiveSizeInBits();
+ int DataWidth = isa<PointerType>(ScalarTy) ?
+ DL.getPointerSizeInBits() : ScalarTy->getPrimitiveSizeInBits();
return (DataWidth >= 32 && ST->hasAVX2());
}
if (isa<VectorType>(DataTy) && !isPowerOf2_32(DataTy->getVectorNumElements()))
return false;
Type *ScalarTy = DataTy->getScalarType();
- // TODO: Pointers should also be legal,
- // but it requires additional support in composing intrinsics name.
- // getPrimitiveSizeInBits() returns 0 for PointerType
- int DataWidth = ScalarTy->getPrimitiveSizeInBits();
+ int DataWidth = isa<PointerType>(ScalarTy) ?
+ DL.getPointerSizeInBits() : ScalarTy->getPrimitiveSizeInBits();
// AVX-512 allows gather and scatter
return DataWidth >= 32 && ST->hasAVX512();
projects / oota-llvm.git / blobdiff