//===-- X86TargetTransformInfo.cpp - X86 specific TTI pass ----------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
/// \file
/// This file implements a TargetTransformInfo analysis pass specific to the
/// X86 target machine. It uses the target's detailed information to provide
/// more precise answers to certain TTI queries, while letting the target
/// independent and default TTI implementations handle the rest.
///
//===----------------------------------------------------------------------===//
/// About Cost Model numbers used below it's necessary to say the following:
/// the numbers correspond to some "generic" X86 CPU instead of usage of
/// concrete CPU model. Usually the numbers correspond to CPU where the feature
/// apeared at the first time. For example, if we do Subtarget.hasSSE42() in
/// the lookups below the cost is based on Nehalem as that was the first CPU
/// to support that feature level and thus has most likely the worst case cost.
/// Some examples of other technologies/CPUs:
/// SSE 3 - Pentium4 / Athlon64
/// SSE 4.1 - Penryn
/// SSE 4.2 - Nehalem
/// AVX - Sandy Bridge
/// AVX2 - Haswell
/// AVX-512 - Xeon Phi / Skylake
/// And some examples of instruction target dependent costs (latency)
/// divss sqrtss rsqrtss
/// AMD K7 11-16 19 3
/// Piledriver 9-24 13-15 5
/// Jaguar 14 16 2
/// Pentium II,III 18 30 2
/// Nehalem 7-14 7-18 3
/// Haswell 10-13 11 5
/// TODO: Develop and implement the target dependent cost model and
/// specialize cost numbers for different Cost Model Targets such as throughput,
/// code size, latency and uop count.
//===----------------------------------------------------------------------===//
#include "X86TargetTransformInfo.h"
#include "llvm/Analysis/TargetTransformInfo.h"
#include "llvm/CodeGen/BasicTTIImpl.h"
#include "llvm/CodeGen/CostTable.h"
#include "llvm/CodeGen/TargetLowering.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/Support/Debug.h"
using namespace llvm;
#define DEBUG_TYPE "x86tti"
//===----------------------------------------------------------------------===//
//
// X86 cost model.
//
//===----------------------------------------------------------------------===//
TargetTransformInfo::PopcntSupportKind
X86TTIImpl::getPopcntSupport(unsigned TyWidth) {
assert(isPowerOf2_32(TyWidth) && "Ty width must be power of 2");
// TODO: Currently the __builtin_popcount() implementation using SSE3
// instructions is inefficient. Once the problem is fixed, we should
// call ST->hasSSE3() instead of ST->hasPOPCNT().
return ST->hasPOPCNT() ? TTI::PSK_FastHardware : TTI::PSK_Software;
}
llvm::Optional<unsigned> X86TTIImpl::getCacheSize(
TargetTransformInfo::CacheLevel Level) const {
switch (Level) {
case TargetTransformInfo::CacheLevel::L1D:
// - Penryn
// - Nehalem
// - Westmere
// - Sandy Bridge
// - Ivy Bridge
// - Haswell
// - Broadwell
// - Skylake
// - Kabylake
return 32 * 1024; // 32 KByte
case TargetTransformInfo::CacheLevel::L2D:
// - Penryn
// - Nehalem
// - Westmere
// - Sandy Bridge
// - Ivy Bridge
// - Haswell
// - Broadwell
// - Skylake
// - Kabylake
return 256 * 1024; // 256 KByte
}
llvm_unreachable("Unknown TargetTransformInfo::CacheLevel");
}
llvm::Optional<unsigned> X86TTIImpl::getCacheAssociativity(
TargetTransformInfo::CacheLevel Level) const {
// - Penryn
// - Nehalem
// - Westmere
// - Sandy Bridge
// - Ivy Bridge
// - Haswell
// - Broadwell
// - Skylake
// - Kabylake
switch (Level) {
case TargetTransformInfo::CacheLevel::L1D:
LLVM_FALLTHROUGH;
case TargetTransformInfo::CacheLevel::L2D:
return 8;
}
llvm_unreachable("Unknown TargetTransformInfo::CacheLevel");
}
unsigned X86TTIImpl::getNumberOfRegisters(unsigned ClassID) const {
bool Vector = (ClassID == 1);
if (Vector && !ST->hasSSE1())
return 0;
if (ST->is64Bit()) {
if (Vector && ST->hasAVX512())
return 32;
return 16;
}
return 8;
}
unsigned X86TTIImpl::getRegisterBitWidth(bool Vector) const {
unsigned PreferVectorWidth = ST->getPreferVectorWidth();
if (Vector) {
if (ST->hasAVX512() && PreferVectorWidth >= 512)
return 512;
if (ST->hasAVX() && PreferVectorWidth >= 256)
return 256;
if (ST->hasSSE1() && PreferVectorWidth >= 128)
return 128;
return 0;
}
if (ST->is64Bit())
return 64;
return 32;
}
unsigned X86TTIImpl::getLoadStoreVecRegBitWidth(unsigned) const {
return getRegisterBitWidth(true);
}
unsigned X86TTIImpl::getMaxInterleaveFactor(unsigned VF) {
// If the loop will not be vectorized, don't interleave the loop.
// Let regular unroll to unroll the loop, which saves the overflow
// check and memory check cost.
if (VF == 1)
return 1;
if (ST->isAtom())
return 1;
// Sandybridge and Haswell have multiple execution ports and pipelined
// vector units.
if (ST->hasAVX())
return 4;
return 2;
}
int X86TTIImpl::getArithmeticInstrCost(unsigned Opcode, Type *Ty,
TTI::TargetCostKind CostKind,
TTI::OperandValueKind Op1Info,
TTI::OperandValueKind Op2Info,
TTI::OperandValueProperties Opd1PropInfo,
TTI::OperandValueProperties Opd2PropInfo,
ArrayRef<const Value *> Args,
const Instruction *CxtI) {
// TODO: Handle more cost kinds.
if (CostKind != TTI::TCK_RecipThroughput)
return BaseT::getArithmeticInstrCost(Opcode, Ty, CostKind, Op1Info,
Op2Info, Opd1PropInfo,
Opd2PropInfo, Args, CxtI);
// Legalize the type.
std::pair<int, MVT> LT = TLI->getTypeLegalizationCost(DL, Ty);
int ISD = TLI->InstructionOpcodeToISD(Opcode);
assert(ISD && "Invalid opcode");
static const CostTblEntry GLMCostTable[] = {
{ ISD::FDIV, MVT::f32, 18 }, // divss
{ ISD::FDIV, MVT::v4f32, 35 }, // divps
{ ISD::FDIV, MVT::f64, 33 }, // divsd
{ ISD::FDIV, MVT::v2f64, 65 }, // divpd
};
if (ST->useGLMDivSqrtCosts())
if (const auto *Entry = CostTableLookup(GLMCostTable, ISD,
LT.second))
return LT.first * Entry->Cost;
static const CostTblEntry SLMCostTable[] = {
{ ISD::MUL, MVT::v4i32, 11 }, // pmulld
{ ISD::MUL, MVT::v8i16, 2 }, // pmullw
{ ISD::MUL, MVT::v16i8, 14 }, // extend/pmullw/trunc sequence.
{ ISD::FMUL, MVT::f64, 2 }, // mulsd
{ ISD::FMUL, MVT::v2f64, 4 }, // mulpd
{ ISD::FMUL, MVT::v4f32, 2 }, // mulps
{ ISD::FDIV, MVT::f32, 17 }, // divss
{ ISD::FDIV, MVT::v4f32, 39 }, // divps
{ ISD::FDIV, MVT::f64, 32 }, // divsd
{ ISD::FDIV, MVT::v2f64, 69 }, // divpd
{ ISD::FADD, MVT::v2f64, 2 }, // addpd
{ ISD::FSUB, MVT::v2f64, 2 }, // subpd
// v2i64/v4i64 mul is custom lowered as a series of long:
// multiplies(3), shifts(3) and adds(2)
// slm muldq version throughput is 2 and addq throughput 4
// thus: 3X2 (muldq throughput) + 3X1 (shift throughput) +
// 3X4 (addq throughput) = 17
{ ISD::MUL, MVT::v2i64, 17 },
// slm addq\subq throughput is 4
{ ISD::ADD, MVT::v2i64, 4 },
{ ISD::SUB, MVT::v2i64, 4 },
};
if (ST->isSLM()) {
if (Args.size() == 2 && ISD == ISD::MUL && LT.second == MVT::v4i32) {
// Check if the operands can be shrinked into a smaller datatype.
bool Op1Signed = false;
unsigned Op1MinSize = BaseT::minRequiredElementSize(Args[0], Op1Signed);
bool Op2Signed = false;
unsigned Op2MinSize = BaseT::minRequiredElementSize(Args[1], Op2Signed);
bool signedMode = Op1Signed | Op2Signed;
unsigned OpMinSize = std::max(Op1MinSize, Op2MinSize);
if (OpMinSize <= 7)
return LT.first * 3; // pmullw/sext
if (!signedMode && OpMinSize <= 8)
return LT.first * 3; // pmullw/zext
if (OpMinSize <= 15)
return LT.first * 5; // pmullw/pmulhw/pshuf
if (!signedMode && OpMinSize <= 16)
return LT.first * 5; // pmullw/pmulhw/pshuf
}
if (const auto *Entry = CostTableLookup(SLMCostTable, ISD,
LT.second)) {
return LT.first * Entry->Cost;
}
}
if ((ISD == ISD::SDIV || ISD == ISD::SREM || ISD == ISD::UDIV ||
ISD == ISD::UREM) &&
(Op2Info == TargetTransformInfo::OK_UniformConstantValue ||
Op2Info == TargetTransformInfo::OK_NonUniformConstantValue) &&
Opd2PropInfo == TargetTransformInfo::OP_PowerOf2) {
if (ISD == ISD::SDIV || ISD == ISD::SREM) {
// On X86, vector signed division by constants power-of-two are
// normally expanded to the sequence SRA + SRL + ADD + SRA.
// The OperandValue properties may not be the same as that of the previous
// operation; conservatively assume OP_None.
int Cost =
2 * getArithmeticInstrCost(Instruction::AShr, Ty, CostKind, Op1Info,
Op2Info,
TargetTransformInfo::OP_None,
TargetTransformInfo::OP_None);
Cost += getArithmeticInstrCost(Instruction::LShr, Ty, CostKind, Op1Info,
Op2Info,
TargetTransformInfo::OP_None,
TargetTransformInfo::OP_None);
Cost += getArithmeticInstrCost(Instruction::Add, Ty, CostKind, Op1Info,
Op2Info,
TargetTransformInfo::OP_None,
TargetTransformInfo::OP_None);
if (ISD == ISD::SREM) {
// For SREM: (X % C) is the equivalent of (X - (X/C)*C)
Cost += getArithmeticInstrCost(Instruction::Mul, Ty, CostKind, Op1Info,
Op2Info);
Cost += getArithmeticInstrCost(Instruction::Sub, Ty, CostKind, Op1Info,
Op2Info);
}
return Cost;
}
// Vector unsigned division/remainder will be simplified to shifts/masks.
if (ISD == ISD::UDIV)
return getArithmeticInstrCost(Instruction::LShr, Ty, CostKind,
Op1Info, Op2Info,
TargetTransformInfo::OP_None,
TargetTransformInfo::OP_None);
else // UREM
return getArithmeticInstrCost(Instruction::And, Ty, CostKind,
Op1Info, Op2Info,
TargetTransformInfo::OP_None,
TargetTransformInfo::OP_None);
}
static const CostTblEntry AVX512BWUniformConstCostTable[] = {
{ ISD::SHL, MVT::v64i8, 2 }, // psllw + pand.
{ ISD::SRL, MVT::v64i8, 2 }, // psrlw + pand.
{ ISD::SRA, MVT::v64i8, 4 }, // psrlw, pand, pxor, psubb.
};
if (Op2Info == TargetTransformInfo::OK_UniformConstantValue &&
ST->hasBWI()) {
if (const auto *Entry = CostTableLookup(AVX512BWUniformConstCostTable, ISD,
LT.second))
return LT.first * Entry->Cost;
}
static const CostTblEntry AVX512UniformConstCostTable[] = {
{ ISD::SRA, MVT::v2i64, 1 },
{ ISD::SRA, MVT::v4i64, 1 },
{ ISD::SRA, MVT::v8i64, 1 },
{ ISD::SHL, MVT::v64i8, 4 }, // psllw + pand.
{ ISD::SRL, MVT::v64i8, 4 }, // psrlw + pand.
{ ISD::SRA, MVT::v64i8, 8 }, // psrlw, pand, pxor, psubb.
};
if (Op2Info == TargetTransformInfo::OK_UniformConstantValue &&
ST->hasAVX512()) {
if (const auto *Entry = CostTableLookup(AVX512UniformConstCostTable, ISD,
LT.second))
return LT.first * Entry->Cost;
}
static const CostTblEntry AVX2UniformConstCostTable[] = {
{ ISD::SHL, MVT::v32i8, 2 }, // psllw + pand.
{ ISD::SRL, MVT::v32i8, 2 }, // psrlw + pand.
{ ISD::SRA, MVT::v32i8, 4 }, // psrlw, pand, pxor, psubb.
{ ISD::SRA, MVT::v4i64, 4 }, // 2 x psrad + shuffle.
};
if (Op2Info == TargetTransformInfo::OK_UniformConstantValue &&
ST->hasAVX2()) {
if (const auto *Entry = CostTableLookup(AVX2UniformConstCostTable, ISD,
LT.second))
return LT.first * Entry->Cost;
}
static const CostTblEntry SSE2UniformConstCostTable[] = {
{ ISD::SHL, MVT::v16i8, 2 }, // psllw + pand.
{ ISD::SRL, MVT::v16i8, 2 }, // psrlw + pand.
{ ISD::SRA, MVT::v16i8, 4 }, // psrlw, pand, pxor, psubb.
{ ISD::SHL, MVT::v32i8, 4+2 }, // 2*(psllw + pand) + split.
{ ISD::SRL, MVT::v32i8, 4+2 }, // 2*(psrlw + pand) + split.
{ ISD::SRA, MVT::v32i8, 8+2 }, // 2*(psrlw, pand, pxor, psubb) + split.
};
// XOP has faster vXi8 shifts.
if (Op2Info == TargetTransformInfo::OK_UniformConstantValue &&
ST->hasSSE2() && !ST->hasXOP()) {
if (const auto *Entry =
CostTableLookup(SSE2UniformConstCostTable, ISD, LT.second))
return LT.first * Entry->Cost;
}
static const CostTblEntry AVX512BWConstCostTable[] = {
{ ISD::SDIV, MVT::v64i8, 14 }, // 2*ext+2*pmulhw sequence
{ ISD::SREM, MVT::v64i8, 16 }, // 2*ext+2*pmulhw+mul+sub sequence
{ ISD::UDIV, MVT::v64i8, 14 }, // 2*ext+2*pmulhw sequence
{ ISD::UREM, MVT::v64i8, 16 }, // 2*ext+2*pmulhw+mul+sub sequence
{ ISD::SDIV, MVT::v32i16, 6 }, // vpmulhw sequence
{ ISD::SREM, MVT::v32i16, 8 }, // vpmulhw+mul+sub sequence
{ ISD::UDIV, MVT::v32i16, 6 }, // vpmulhuw sequence
{ ISD::UREM, MVT::v32i16, 8 }, // vpmulhuw+mul+sub sequence
};
if ((Op2Info == TargetTransformInfo::OK_UniformConstantValue ||
Op2Info == TargetTransformInfo::OK_NonUniformConstantValue) &&
ST->hasBWI()) {
if (const auto *Entry =
CostTableLookup(AVX512BWConstCostTable, ISD, LT.second))
return LT.first * Entry->Cost;
}
static const CostTblEntry AVX512ConstCostTable[] = {
{ ISD::SDIV, MVT::v16i32, 15 }, // vpmuldq sequence
{ ISD::SREM, MVT::v16i32, 17 }, // vpmuldq+mul+sub sequence
{ ISD::UDIV, MVT::v16i32, 15 }, // vpmuludq sequence
{ ISD::UREM, MVT::v16i32, 17 }, // vpmuludq+mul+sub sequence
{ ISD::SDIV, MVT::v64i8, 28 }, // 4*ext+4*pmulhw sequence
{ ISD::SREM, MVT::v64i8, 32 }, // 4*ext+4*pmulhw+mul+sub sequence
{ ISD::UDIV, MVT::v64i8, 28 }, // 4*ext+4*pmulhw sequence
{ ISD::UREM, MVT::v64i8, 32 }, // 4*ext+4*pmulhw+mul+sub sequence
{ ISD::SDIV, MVT::v32i16, 12 }, // 2*vpmulhw sequence
{ ISD::SREM, MVT::v32i16, 16 }, // 2*vpmulhw+mul+sub sequence
{ ISD::UDIV, MVT::v32i16, 12 }, // 2*vpmulhuw sequence
{ ISD::UREM, MVT::v32i16, 16 }, // 2*vpmulhuw+mul+sub sequence
};
if ((Op2Info == TargetTransformInfo::OK_UniformConstantValue ||
Op2Info == TargetTransformInfo::OK_NonUniformConstantValue) &&
ST->hasAVX512()) {
if (const auto *Entry =
CostTableLookup(AVX512ConstCostTable, ISD, LT.second))
return LT.first * Entry->Cost;
}
static const CostTblEntry AVX2ConstCostTable[] = {
{ ISD::SDIV, MVT::v32i8, 14 }, // 2*ext+2*pmulhw sequence
{ ISD::SREM, MVT::v32i8, 16 }, // 2*ext+2*pmulhw+mul+sub sequence
{ ISD::UDIV, MVT::v32i8, 14 }, // 2*ext+2*pmulhw sequence
{ ISD::UREM, MVT::v32i8, 16 }, // 2*ext+2*pmulhw+mul+sub sequence
{ ISD::SDIV, MVT::v16i16, 6 }, // vpmulhw sequence
{ ISD::SREM, MVT::v16i16, 8 }, // vpmulhw+mul+sub sequence
{ ISD::UDIV, MVT::v16i16, 6 }, // vpmulhuw sequence
{ ISD::UREM, MVT::v16i16, 8 }, // vpmulhuw+mul+sub sequence
{ ISD::SDIV, MVT::v8i32, 15 }, // vpmuldq sequence
{ ISD::SREM, MVT::v8i32, 19 }, // vpmuldq+mul+sub sequence
{ ISD::UDIV, MVT::v8i32, 15 }, // vpmuludq sequence
{ ISD::UREM, MVT::v8i32, 19 }, // vpmuludq+mul+sub sequence
};
if ((Op2Info == TargetTransformInfo::OK_UniformConstantValue ||
Op2Info == TargetTransformInfo::OK_NonUniformConstantValue) &&
ST->hasAVX2()) {
if (const auto *Entry = CostTableLookup(AVX2ConstCostTable, ISD, LT.second))
return LT.first * Entry->Cost;
}
static const CostTblEntry SSE2ConstCostTable[] = {
{ ISD::SDIV, MVT::v32i8, 28+2 }, // 4*ext+4*pmulhw sequence + split.
{ ISD::SREM, MVT::v32i8, 32+2 }, // 4*ext+4*pmulhw+mul+sub sequence + split.
{ ISD::SDIV, MVT::v16i8, 14 }, // 2*ext+2*pmulhw sequence
{ ISD::SREM, MVT::v16i8, 16 }, // 2*ext+2*pmulhw+mul+sub sequence
{ ISD::UDIV, MVT::v32i8, 28+2 }, // 4*ext+4*pmulhw sequence + split.
{ ISD::UREM, MVT::v32i8, 32+2 }, // 4*ext+4*pmulhw+mul+sub sequence + split.
{ ISD::UDIV, MVT::v16i8, 14 }, // 2*ext+2*pmulhw sequence
{ ISD::UREM, MVT::v16i8, 16 }, // 2*ext+2*pmulhw+mul+sub sequence
{ ISD::SDIV, MVT::v16i16, 12+2 }, // 2*pmulhw sequence + split.
{ ISD::SREM, MVT::v16i16, 16+2 }, // 2*pmulhw+mul+sub sequence + split.
{ ISD::SDIV, MVT::v8i16, 6 }, // pmulhw sequence
{ ISD::SREM, MVT::v8i16, 8 }, // pmulhw+mul+sub sequence
{ ISD::UDIV, MVT::v16i16, 12+2 }, // 2*pmulhuw sequence + split.
{ ISD::UREM, MVT::v16i16, 16+2 }, // 2*pmulhuw+mul+sub sequence + split.
{ ISD::UDIV, MVT::v8i16, 6 }, // pmulhuw sequence
{ ISD::UREM, MVT::v8i16, 8 }, // pmulhuw+mul+sub sequence
{ ISD::SDIV, MVT::v8i32, 38+2 }, // 2*pmuludq sequence + split.
{ ISD::SREM, MVT::v8i32, 48+2 }, // 2*pmuludq+mul+sub sequence + split.
{ ISD::SDIV, MVT::v4i32, 19 }, // pmuludq sequence
{ ISD::SREM, MVT::v4i32, 24 }, // pmuludq+mul+sub sequence
{ ISD::UDIV, MVT::v8i32, 30+2 }, // 2*pmuludq sequence + split.
{ ISD::UREM, MVT::v8i32, 40+2 }, // 2*pmuludq+mul+sub sequence + split.
{ ISD::UDIV, MVT::v4i32, 15 }, // pmuludq sequence
{ ISD::UREM, MVT::v4i32, 20 }, // pmuludq+mul+sub sequence
};
if ((Op2Info == TargetTransformInfo::OK_UniformConstantValue ||
Op2Info == TargetTransformInfo::OK_NonUniformConstantValue) &&
ST->hasSSE2()) {
// pmuldq sequence.
if (ISD == ISD::SDIV && LT.second == MVT::v8i32 && ST->hasAVX())
return LT.first * 32;
if (ISD == ISD::SREM && LT.second == MVT::v8i32 && ST->hasAVX())
return LT.first * 38;
if (ISD == ISD::SDIV && LT.second == MVT::v4i32 && ST->hasSSE41())
return LT.first * 15;
if (ISD == ISD::SREM && LT.second == MVT::v4i32 && ST->hasSSE41())
return LT.first * 20;
if (const auto *Entry = CostTableLookup(SSE2ConstCostTable, ISD, LT.second))
return LT.first * Entry->Cost;
}
static const CostTblEntry AVX512BWShiftCostTable[] = {
{ ISD::SHL, MVT::v8i16, 1 }, // vpsllvw
{ ISD::SRL, MVT::v8i16, 1 }, // vpsrlvw
{ ISD::SRA, MVT::v8i16, 1 }, // vpsravw
{ ISD::SHL, MVT::v16i16, 1 }, // vpsllvw
{ ISD::SRL, MVT::v16i16, 1 }, // vpsrlvw
{ ISD::SRA, MVT::v16i16, 1 }, // vpsravw
{ ISD::SHL, MVT::v32i16, 1 }, // vpsllvw
{ ISD::SRL, MVT::v32i16, 1 }, // vpsrlvw
{ ISD::SRA, MVT::v32i16, 1 }, // vpsravw
};
if (ST->hasBWI())
if (const auto *Entry = CostTableLookup(AVX512BWShiftCostTable, ISD, LT.second))
return LT.first * Entry->Cost;
static const CostTblEntry AVX2UniformCostTable[] = {
// Uniform splats are cheaper for the following instructions.
{ ISD::SHL, MVT::v16i16, 1 }, // psllw.
{ ISD::SRL, MVT::v16i16, 1 }, // psrlw.
{ ISD::SRA, MVT::v16i16, 1 }, // psraw.
{ ISD::SHL, MVT::v32i16, 2 }, // 2*psllw.
{ ISD::SRL, MVT::v32i16, 2 }, // 2*psrlw.
{ ISD::SRA, MVT::v32i16, 2 }, // 2*psraw.
};
if (ST->hasAVX2() &&
((Op2Info == TargetTransformInfo::OK_UniformConstantValue) ||
(Op2Info == TargetTransformInfo::OK_UniformValue))) {
if (const auto *Entry =
CostTableLookup(AVX2UniformCostTable, ISD, LT.second))
return LT.first * Entry->Cost;
}
static const CostTblEntry SSE2UniformCostTable[] = {
// Uniform splats are cheaper for the following instructions.
{ ISD::SHL, MVT::v8i16, 1 }, // psllw.
{ ISD::SHL, MVT::v4i32, 1 }, // pslld
{ ISD::SHL, MVT::v2i64, 1 }, // psllq.
{ ISD::SRL, MVT::v8i16, 1 }, // psrlw.
{ ISD::SRL, MVT::v4i32, 1 }, // psrld.
{ ISD::SRL, MVT::v2i64, 1 }, // psrlq.
{ ISD::SRA, MVT::v8i16, 1 }, // psraw.
{ ISD::SRA, MVT::v4i32, 1 }, // psrad.
};
if (ST->hasSSE2() &&
((Op2Info == TargetTransformInfo::OK_UniformConstantValue) ||
(Op2Info == TargetTransformInfo::OK_UniformValue))) {
if (const auto *Entry =
CostTableLookup(SSE2UniformCostTable, ISD, LT.second))
return LT.first * Entry->Cost;
}
static const CostTblEntry AVX512DQCostTable[] = {
{ ISD::MUL, MVT::v2i64, 1 },
{ ISD::MUL, MVT::v4i64, 1 },
{ ISD::MUL, MVT::v8i64, 1 }
};
// Look for AVX512DQ lowering tricks for custom cases.
if (ST->hasDQI())
if (const auto *Entry = CostTableLookup(AVX512DQCostTable, ISD, LT.second))
return LT.first * Entry->Cost;
static const CostTblEntry AVX512BWCostTable[] = {
{ ISD::SHL, MVT::v64i8, 11 }, // vpblendvb sequence.
{ ISD::SRL, MVT::v64i8, 11 }, // vpblendvb sequence.
{ ISD::SRA, MVT::v64i8, 24 }, // vpblendvb sequence.
{ ISD::MUL, MVT::v64i8, 11 }, // extend/pmullw/trunc sequence.
{ ISD::MUL, MVT::v32i8, 4 }, // extend/pmullw/trunc sequence.
{ ISD::MUL, MVT::v16i8, 4 }, // extend/pmullw/trunc sequence.
};
// Look for AVX512BW lowering tricks for custom cases.
if (ST->hasBWI())
if (const auto *Entry = CostTableLookup(AVX512BWCostTable, ISD, LT.second))
return LT.first * Entry->Cost;
static const CostTblEntry AVX512CostTable[] = {
{ ISD::SHL, MVT::v16i32, 1 },
{ ISD::SRL, MVT::v16i32, 1 },
{ ISD::SRA, MVT::v16i32, 1 },
{ ISD::SHL, MVT::v8i64, 1 },
{ ISD::SRL, MVT::v8i64, 1 },
{ ISD::SRA, MVT::v2i64, 1 },
{ ISD::SRA, MVT::v4i64, 1 },
{ ISD::SRA, MVT::v8i64, 1 },
{ ISD::MUL, MVT::v64i8, 26 }, // extend/pmullw/trunc sequence.
{ ISD::MUL, MVT::v32i8, 13 }, // extend/pmullw/trunc sequence.
{ ISD::MUL, MVT::v16i8, 5 }, // extend/pmullw/trunc sequence.
{ ISD::MUL, MVT::v16i32, 1 }, // pmulld (Skylake from agner.org)
{ ISD::MUL, MVT::v8i32, 1 }, // pmulld (Skylake from agner.org)
{ ISD::MUL, MVT::v4i32, 1 }, // pmulld (Skylake from agner.org)
{ ISD::MUL, MVT::v8i64, 8 }, // 3*pmuludq/3*shift/2*add
{ ISD::FADD, MVT::v8f64, 1 }, // Skylake from http://www.agner.org/
{ ISD::FSUB, MVT::v8f64, 1 }, // Skylake from http://www.agner.org/
{ ISD::FMUL, MVT::v8f64, 1 }, // Skylake from http://www.agner.org/
{ ISD::FADD, MVT::v16f32, 1 }, // Skylake from http://www.agner.org/
{ ISD::FSUB, MVT::v16f32, 1 }, // Skylake from http://www.agner.org/
{ ISD::FMUL, MVT::v16f32, 1 }, // Skylake from http://www.agner.org/
};
if (ST->hasAVX512())
if (const auto *Entry = CostTableLookup(AVX512CostTable, ISD, LT.second))
return LT.first * Entry->Cost;
static const CostTblEntry AVX2ShiftCostTable[] = {
// 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 },
{ ISD::SRL, MVT::v4i32, 1 },
{ ISD::SRA, MVT::v4i32, 1 },
{ ISD::SHL, MVT::v8i32, 1 },
{ ISD::SRL, MVT::v8i32, 1 },
{ ISD::SRA, MVT::v8i32, 1 },
{ ISD::SHL, MVT::v2i64, 1 },
{ ISD::SRL, MVT::v2i64, 1 },
{ ISD::SHL, MVT::v4i64, 1 },
{ ISD::SRL, MVT::v4i64, 1 },
};
if (ST->hasAVX512()) {
if (ISD == ISD::SHL && LT.second == MVT::v32i16 &&
(Op2Info == TargetTransformInfo::OK_UniformConstantValue ||
Op2Info == TargetTransformInfo::OK_NonUniformConstantValue))
// On AVX512, a packed v32i16 shift left by a constant build_vector
// is lowered into a vector multiply (vpmullw).
return getArithmeticInstrCost(Instruction::Mul, Ty, CostKind,
Op1Info, Op2Info,
TargetTransformInfo::OP_None,
TargetTransformInfo::OP_None);
}
// Look for AVX2 lowering tricks.
if (ST->hasAVX2()) {
if (ISD == ISD::SHL && LT.second == MVT::v16i16 &&
(Op2Info == TargetTransformInfo::OK_UniformConstantValue ||
Op2Info == TargetTransformInfo::OK_NonUniformConstantValue))
// On AVX2, a packed v16i16 shift left by a constant build_vector
// is lowered into a vector multiply (vpmullw).
return getArithmeticInstrCost(Instruction::Mul, Ty, CostKind,
Op1Info, Op2Info,
TargetTransformInfo::OP_None,
TargetTransformInfo::OP_None);
if (const auto *Entry = CostTableLookup(AVX2ShiftCostTable, ISD, LT.second))
return LT.first * Entry->Cost;
}
static const CostTblEntry XOPShiftCostTable[] = {
// 128bit shifts take 1cy, but right shifts require negation beforehand.
{ ISD::SHL, MVT::v16i8, 1 },
{ ISD::SRL, MVT::v16i8, 2 },
{ ISD::SRA, MVT::v16i8, 2 },
{ ISD::SHL, MVT::v8i16, 1 },
{ ISD::SRL, MVT::v8i16, 2 },
{ ISD::SRA, MVT::v8i16, 2 },
{ ISD::SHL, MVT::v4i32, 1 },
{ ISD::SRL, MVT::v4i32, 2 },
{ ISD::SRA, MVT::v4i32, 2 },
{ ISD::SHL, MVT::v2i64, 1 },
{ ISD::SRL, MVT::v2i64, 2 },
{ ISD::SRA, MVT::v2i64, 2 },
// 256bit shifts require splitting if AVX2 didn't catch them above.
{ ISD::SHL, MVT::v32i8, 2+2 },
{ ISD::SRL, MVT::v32i8, 4+2 },
{ ISD::SRA, MVT::v32i8, 4+2 },
{ ISD::SHL, MVT::v16i16, 2+2 },
{ ISD::SRL, MVT::v16i16, 4+2 },
{ ISD::SRA, MVT::v16i16, 4+2 },
{ ISD::SHL, MVT::v8i32, 2+2 },
{ ISD::SRL, MVT::v8i32, 4+2 },
{ ISD::SRA, MVT::v8i32, 4+2 },
{ ISD::SHL, MVT::v4i64, 2+2 },
{ ISD::SRL, MVT::v4i64, 4+2 },
{ ISD::SRA, MVT::v4i64, 4+2 },
};
// Look for XOP lowering tricks.
if (ST->hasXOP()) {
// If the right shift is constant then we'll fold the negation so
// it's as cheap as a left shift.
int ShiftISD = ISD;
if ((ShiftISD == ISD::SRL || ShiftISD == ISD::SRA) &&
(Op2Info == TargetTransformInfo::OK_UniformConstantValue ||
Op2Info == TargetTransformInfo::OK_NonUniformConstantValue))
ShiftISD = ISD::SHL;
if (const auto *Entry =
CostTableLookup(XOPShiftCostTable, ShiftISD, LT.second))
return LT.first * Entry->Cost;
}
static const CostTblEntry SSE2UniformShiftCostTable[] = {
// Uniform splats are cheaper for the following instructions.
{ ISD::SHL, MVT::v16i16, 2+2 }, // 2*psllw + split.
{ ISD::SHL, MVT::v8i32, 2+2 }, // 2*pslld + split.
{ ISD::SHL, MVT::v4i64, 2+2 }, // 2*psllq + split.
{ ISD::SRL, MVT::v16i16, 2+2 }, // 2*psrlw + split.
{ ISD::SRL, MVT::v8i32, 2+2 }, // 2*psrld + split.
{ ISD::SRL, MVT::v4i64, 2+2 }, // 2*psrlq + split.
{ ISD::SRA, MVT::v16i16, 2+2 }, // 2*psraw + split.
{ ISD::SRA, MVT::v8i32, 2+2 }, // 2*psrad + split.
{ ISD::SRA, MVT::v2i64, 4 }, // 2*psrad + shuffle.
{ ISD::SRA, MVT::v4i64, 8+2 }, // 2*(2*psrad + shuffle) + split.
};
if (ST->hasSSE2() &&
((Op2Info == TargetTransformInfo::OK_UniformConstantValue) ||
(Op2Info == TargetTransformInfo::OK_UniformValue))) {
// Handle AVX2 uniform v4i64 ISD::SRA, it's not worth a table.
if (ISD == ISD::SRA && LT.second == MVT::v4i64 && ST->hasAVX2())
return LT.first * 4; // 2*psrad + shuffle.
if (const auto *Entry =
CostTableLookup(SSE2UniformShiftCostTable, ISD, LT.second))
return LT.first * Entry->Cost;
}
if (ISD == ISD::SHL &&
Op2Info == TargetTransformInfo::OK_NonUniformConstantValue) {
MVT VT = LT.second;
// Vector shift left by non uniform constant can be lowered
// into vector multiply.
if (((VT == MVT::v8i16 || VT == MVT::v4i32) && ST->hasSSE2()) ||
((VT == MVT::v16i16 || VT == MVT::v8i32) && ST->hasAVX()))
ISD = ISD::MUL;
}
static const CostTblEntry AVX2CostTable[] = {
{ ISD::SHL, MVT::v32i8, 11 }, // vpblendvb sequence.
{ ISD::SHL, MVT::v64i8, 22 }, // 2*vpblendvb sequence.
{ ISD::SHL, MVT::v16i16, 10 }, // extend/vpsrlvd/pack sequence.
{ ISD::SHL, MVT::v32i16, 20 }, // 2*extend/vpsrlvd/pack sequence.
{ ISD::SRL, MVT::v32i8, 11 }, // vpblendvb sequence.
{ ISD::SRL, MVT::v64i8, 22 }, // 2*vpblendvb sequence.
{ ISD::SRL, MVT::v16i16, 10 }, // extend/vpsrlvd/pack sequence.
{ ISD::SRL, MVT::v32i16, 20 }, // 2*extend/vpsrlvd/pack sequence.
{ ISD::SRA, MVT::v32i8, 24 }, // vpblendvb sequence.
{ ISD::SRA, MVT::v64i8, 48 }, // 2*vpblendvb sequence.
{ ISD::SRA, MVT::v16i16, 10 }, // extend/vpsravd/pack sequence.
{ ISD::SRA, MVT::v32i16, 20 }, // 2*extend/vpsravd/pack sequence.
{ ISD::SRA, MVT::v2i64, 4 }, // srl/xor/sub sequence.
{ ISD::SRA, MVT::v4i64, 4 }, // srl/xor/sub sequence.
{ ISD::SUB, MVT::v32i8, 1 }, // psubb
{ ISD::ADD, MVT::v32i8, 1 }, // paddb
{ ISD::SUB, MVT::v16i16, 1 }, // psubw
{ ISD::ADD, MVT::v16i16, 1 }, // paddw
{ ISD::SUB, MVT::v8i32, 1 }, // psubd
{ ISD::ADD, MVT::v8i32, 1 }, // paddd
{ ISD::SUB, MVT::v4i64, 1 }, // psubq
{ ISD::ADD, MVT::v4i64, 1 }, // paddq
{ ISD::MUL, MVT::v32i8, 17 }, // extend/pmullw/trunc sequence.
{ ISD::MUL, MVT::v16i8, 7 }, // extend/pmullw/trunc sequence.
{ ISD::MUL, MVT::v16i16, 1 }, // pmullw
{ ISD::MUL, MVT::v8i32, 2 }, // pmulld (Haswell from agner.org)
{ ISD::MUL, MVT::v4i64, 8 }, // 3*pmuludq/3*shift/2*add
{ ISD::FADD, MVT::v4f64, 1 }, // Haswell from http://www.agner.org/
{ ISD::FADD, MVT::v8f32, 1 }, // Haswell from http://www.agner.org/
{ ISD::FSUB, MVT::v4f64, 1 }, // Haswell from http://www.agner.org/
{ ISD::FSUB, MVT::v8f32, 1 }, // Haswell from http://www.agner.org/
{ ISD::FMUL, MVT::v4f64, 1 }, // Haswell from http://www.agner.org/
{ ISD::FMUL, MVT::v8f32, 1 }, // Haswell from http://www.agner.org/
{ ISD::FDIV, MVT::f32, 7 }, // Haswell from http://www.agner.org/
{ ISD::FDIV, MVT::v4f32, 7 }, // Haswell from http://www.agner.org/
{ ISD::FDIV, MVT::v8f32, 14 }, // Haswell from http://www.agner.org/
{ ISD::FDIV, MVT::f64, 14 }, // Haswell from http://www.agner.org/
{ ISD::FDIV, MVT::v2f64, 14 }, // Haswell from http://www.agner.org/
{ ISD::FDIV, MVT::v4f64, 28 }, // Haswell from http://www.agner.org/
};
// Look for AVX2 lowering tricks for custom cases.
if (ST->hasAVX2())
if (const auto *Entry = CostTableLookup(AVX2CostTable, ISD, LT.second))
return LT.first * Entry->Cost;
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.
{ ISD::MUL, MVT::v16i16, 4 },
{ ISD::MUL, MVT::v8i32, 4 },
{ ISD::SUB, MVT::v32i8, 4 },
{ ISD::ADD, MVT::v32i8, 4 },
{ ISD::SUB, MVT::v16i16, 4 },
{ ISD::ADD, MVT::v16i16, 4 },
{ ISD::SUB, MVT::v8i32, 4 },
{ ISD::ADD, MVT::v8i32, 4 },
{ ISD::SUB, MVT::v4i64, 4 },
{ ISD::ADD, MVT::v4i64, 4 },
// A v4i64 multiply is custom lowered as two split v2i64 vectors that then
// are lowered as a series of long multiplies(3), shifts(3) and adds(2)
// Because we believe v4i64 to be a legal type, we must also include the
// extract+insert in the cost table. Therefore, the cost here is 18
// instead of 8.
{ ISD::MUL, MVT::v4i64, 18 },
{ ISD::MUL, MVT::v32i8, 26 }, // extend/pmullw/trunc sequence.
{ ISD::FDIV, MVT::f32, 14 }, // SNB from http://www.agner.org/
{ ISD::FDIV, MVT::v4f32, 14 }, // SNB from http://www.agner.org/
{ ISD::FDIV, MVT::v8f32, 28 }, // SNB from http://www.agner.org/
{ ISD::FDIV, MVT::f64, 22 }, // SNB from http://www.agner.org/
{ ISD::FDIV, MVT::v2f64, 22 }, // SNB from http://www.agner.org/
{ ISD::FDIV, MVT::v4f64, 44 }, // SNB from http://www.agner.org/
};
if (ST->hasAVX())
if (const auto *Entry = CostTableLookup(AVX1CostTable, ISD, LT.second))
return LT.first * Entry->Cost;
static const CostTblEntry SSE42CostTable[] = {
{ ISD::FADD, MVT::f64, 1 }, // Nehalem from http://www.agner.org/
{ ISD::FADD, MVT::f32, 1 }, // Nehalem from http://www.agner.org/
{ ISD::FADD, MVT::v2f64, 1 }, // Nehalem from http://www.agner.org/
{ ISD::FADD, MVT::v4f32, 1 }, // Nehalem from http://www.agner.org/
{ ISD::FSUB, MVT::f64, 1 }, // Nehalem from http://www.agner.org/
{ ISD::FSUB, MVT::f32 , 1 }, // Nehalem from http://www.agner.org/
{ ISD::FSUB, MVT::v2f64, 1 }, // Nehalem from http://www.agner.org/
{ ISD::FSUB, MVT::v4f32, 1 }, // Nehalem from http://www.agner.org/
{ ISD::FMUL, MVT::f64, 1 }, // Nehalem from http://www.agner.org/
{ ISD::FMUL, MVT::f32, 1 }, // Nehalem from http://www.agner.org/
{ ISD::FMUL, MVT::v2f64, 1 }, // Nehalem from http://www.agner.org/
{ ISD::FMUL, MVT::v4f32, 1 }, // Nehalem from http://www.agner.org/
{ ISD::FDIV, MVT::f32, 14 }, // Nehalem from http://www.agner.org/
{ ISD::FDIV, MVT::v4f32, 14 }, // Nehalem from http://www.agner.org/
{ ISD::FDIV, MVT::f64, 22 }, // Nehalem from http://www.agner.org/
{ ISD::FDIV, MVT::v2f64, 22 }, // Nehalem from http://www.agner.org/
};
if (ST->hasSSE42())
if (const auto *Entry = CostTableLookup(SSE42CostTable, ISD, LT.second))
return LT.first * Entry->Cost;
static const CostTblEntry SSE41CostTable[] = {
{ ISD::SHL, MVT::v16i8, 11 }, // pblendvb sequence.
{ ISD::SHL, MVT::v32i8, 2*11+2 }, // pblendvb sequence + split.
{ ISD::SHL, MVT::v8i16, 14 }, // pblendvb sequence.
{ ISD::SHL, MVT::v16i16, 2*14+2 }, // pblendvb sequence + split.
{ ISD::SHL, MVT::v4i32, 4 }, // pslld/paddd/cvttps2dq/pmulld
{ ISD::SHL, MVT::v8i32, 2*4+2 }, // pslld/paddd/cvttps2dq/pmulld + split
{ ISD::SRL, MVT::v16i8, 12 }, // pblendvb sequence.
{ ISD::SRL, MVT::v32i8, 2*12+2 }, // pblendvb sequence + split.
{ ISD::SRL, MVT::v8i16, 14 }, // pblendvb sequence.
{ ISD::SRL, MVT::v16i16, 2*14+2 }, // pblendvb sequence + split.
{ ISD::SRL, MVT::v4i32, 11 }, // Shift each lane + blend.
{ ISD::SRL, MVT::v8i32, 2*11+2 }, // Shift each lane + blend + split.
{ ISD::SRA, MVT::v16i8, 24 }, // pblendvb sequence.
{ ISD::SRA, MVT::v32i8, 2*24+2 }, // pblendvb sequence + split.
{ ISD::SRA, MVT::v8i16, 14 }, // pblendvb sequence.
{ ISD::SRA, MVT::v16i16, 2*14+2 }, // pblendvb sequence + split.
{ ISD::SRA, MVT::v4i32, 12 }, // Shift each lane + blend.
{ ISD::SRA, MVT::v8i32, 2*12+2 }, // Shift each lane + blend + split.
{ ISD::MUL, MVT::v4i32, 2 } // pmulld (Nehalem from agner.org)
};
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.
{ ISD::SHL, MVT::v16i8, 26 }, // cmpgtb sequence.
{ ISD::SHL, MVT::v8i16, 32 }, // cmpgtb sequence.
{ ISD::SHL, MVT::v4i32, 2*5 }, // We optimized this using mul.
{ ISD::SHL, MVT::v2i64, 4 }, // splat+shuffle sequence.
{ ISD::SHL, MVT::v4i64, 2*4+2 }, // splat+shuffle sequence + split.
{ ISD::SRL, MVT::v16i8, 26 }, // cmpgtb sequence.
{ ISD::SRL, MVT::v8i16, 32 }, // cmpgtb sequence.
{ ISD::SRL, MVT::v4i32, 16 }, // Shift each lane + blend.
{ ISD::SRL, MVT::v2i64, 4 }, // splat+shuffle sequence.
{ ISD::SRL, MVT::v4i64, 2*4+2 }, // splat+shuffle sequence + split.
{ ISD::SRA, MVT::v16i8, 54 }, // unpacked cmpgtb sequence.
{ ISD::SRA, MVT::v8i16, 32 }, // cmpgtb sequence.
{ ISD::SRA, MVT::v4i32, 16 }, // Shift each lane + blend.
{ ISD::SRA, MVT::v2i64, 12 }, // srl/xor/sub sequence.
{ ISD::SRA, MVT::v4i64, 2*12+2 }, // srl/xor/sub sequence+split.
{ ISD::MUL, MVT::v16i8, 12 }, // extend/pmullw/trunc sequence.
{ ISD::MUL, MVT::v8i16, 1 }, // pmullw
{ ISD::MUL, MVT::v4i32, 6 }, // 3*pmuludq/4*shuffle
{ 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/
{ ISD::FDIV, MVT::f64, 38 }, // Pentium IV from http://www.agner.org/
{ ISD::FDIV, MVT::v2f64, 69 }, // Pentium IV from http://www.agner.org/
{ ISD::FADD, MVT::f32, 2 }, // Pentium IV from http://www.agner.org/
{ ISD::FADD, MVT::f64, 2 }, // Pentium IV from http://www.agner.org/
{ ISD::FSUB, MVT::f32, 2 }, // Pentium IV from http://www.agner.org/
{ ISD::FSUB, MVT::f64, 2 }, // Pentium IV from http://www.agner.org/
};
if (ST->hasSSE2())
if (const auto *Entry = CostTableLookup(SSE2CostTable, ISD, LT.second))
return LT.first * Entry->Cost;
static const CostTblEntry SSE1CostTable[] = {
{ ISD::FDIV, MVT::f32, 17 }, // Pentium III from http://www.agner.org/
{ ISD::FDIV, MVT::v4f32, 34 }, // Pentium III from http://www.agner.org/
{ ISD::FADD, MVT::f32, 1 }, // Pentium III from http://www.agner.org/
{ ISD::FADD, MVT::v4f32, 2 }, // Pentium III from http://www.agner.org/
{ ISD::FSUB, MVT::f32, 1 }, // Pentium III from http://www.agner.org/
{ ISD::FSUB, MVT::v4f32, 2 }, // Pentium III from http://www.agner.org/
{ ISD::ADD, MVT::i8, 1 }, // Pentium III from http://www.agner.org/
{ ISD::ADD, MVT::i16, 1 }, // Pentium III from http://www.agner.org/
{ ISD::ADD, MVT::i32, 1 }, // Pentium III from http://www.agner.org/
{ ISD::SUB, MVT::i8, 1 }, // Pentium III from http://www.agner.org/
{ ISD::SUB, MVT::i16, 1 }, // Pentium III from http://www.agner.org/
{ ISD::SUB, MVT::i32, 1 }, // Pentium III from http://www.agner.org/
};
if (ST->hasSSE1())
if (const auto *Entry = CostTableLookup(SSE1CostTable, ISD, LT.second))
return LT.first * Entry->Cost;
// It is not a good idea to vectorize division. We have to scalarize it and
// in the process we will often end up having to spilling regular
// registers. The overhead of division is going to dominate most kernels
// anyways so try hard to prevent vectorization of division - it is
// generally a bad idea. Assume somewhat arbitrarily that we have to be able
// to hide "20 cycles" for each lane.
if (LT.second.isVector() && (ISD == ISD::SDIV || ISD == ISD::SREM ||
ISD == ISD::UDIV || ISD == ISD::UREM)) {
int ScalarCost = getArithmeticInstrCost(
Opcode, Ty->getScalarType(), CostKind, Op1Info, Op2Info,
TargetTransformInfo::OP_None, TargetTransformInfo::OP_None);
return 20 * LT.first * LT.second.getVectorNumElements() * ScalarCost;
}
// Fallback to the default implementation.
return BaseT::getArithmeticInstrCost(Opcode, Ty, CostKind, Op1Info, Op2Info);
}
int X86TTIImpl::getShuffleCost(TTI::ShuffleKind Kind, VectorType *BaseTp,
int Index, VectorType *SubTp) {
// 64-bit packed float vectors (v2f32) are widened to type v4f32.
// 64-bit packed integer vectors (v2i32) are widened to type v4i32.
std::pair<int, MVT> LT = TLI->getTypeLegalizationCost(DL, BaseTp);
// Treat Transpose as 2-op shuffles - there's no difference in lowering.
if (Kind == TTI::SK_Transpose)
Kind = TTI::SK_PermuteTwoSrc;
// For Broadcasts we are splatting the first element from the first input
// register, so only need to reference that input and all the output
// registers are the same.
if (Kind == TTI::SK_Broadcast)
LT.first = 1;
// Subvector extractions are free if they start at the beginning of a
// vector and cheap if the subvectors are aligned.
if (Kind == TTI::SK_ExtractSubvector && LT.second.isVector()) {
int NumElts = LT.second.getVectorNumElements();
if ((Index % NumElts) == 0)
return 0;
std::pair<int, MVT> SubLT = TLI->getTypeLegalizationCost(DL, SubTp);
if (SubLT.second.isVector()) {
int NumSubElts = SubLT.second.getVectorNumElements();
if ((Index % NumSubElts) == 0 && (NumElts % NumSubElts) == 0)
return SubLT.first;
// Handle some cases for widening legalization. For now we only handle
// cases where the original subvector was naturally aligned and evenly
// fit in its legalized subvector type.
// FIXME: Remove some of the alignment restrictions.
// FIXME: We can use permq for 64-bit or larger extracts from 256-bit
// vectors.
int OrigSubElts = cast<FixedVectorType>(SubTp)->getNumElements();
if (NumSubElts > OrigSubElts && (Index % OrigSubElts) == 0 &&
(NumSubElts % OrigSubElts) == 0 &&
LT.second.getVectorElementType() ==
SubLT.second.getVectorElementType() &&
LT.second.getVectorElementType().getSizeInBits() ==
BaseTp->getElementType()->getPrimitiveSizeInBits()) {
assert(NumElts >= NumSubElts && NumElts > OrigSubElts &&
"Unexpected number of elements!");
auto *VecTy = FixedVectorType::get(BaseTp->getElementType(),
LT.second.getVectorNumElements());
auto *SubTy = FixedVectorType::get(BaseTp->getElementType(),
SubLT.second.getVectorNumElements());
int ExtractIndex = alignDown((Index % NumElts), NumSubElts);
int ExtractCost = getShuffleCost(TTI::SK_ExtractSubvector, VecTy,
ExtractIndex, SubTy);
// If the original size is 32-bits or more, we can use pshufd. Otherwise
// if we have SSSE3 we can use pshufb.
if (SubTp->getPrimitiveSizeInBits() >= 32 || ST->hasSSSE3())
return ExtractCost + 1; // pshufd or pshufb
assert(SubTp->getPrimitiveSizeInBits() == 16 &&
"Unexpected vector size");
return ExtractCost + 2; // worst case pshufhw + pshufd
}
}
}
// Handle some common (illegal) sub-vector types as they are often very cheap
// to shuffle even on targets without PSHUFB.
EVT VT = TLI->getValueType(DL, BaseTp);
if (VT.isSimple() && VT.isVector() && VT.getSizeInBits() < 128 &&
!ST->hasSSSE3()) {
static const CostTblEntry SSE2SubVectorShuffleTbl[] = {
{TTI::SK_Broadcast, MVT::v4i16, 1}, // pshuflw
{TTI::SK_Broadcast, MVT::v2i16, 1}, // pshuflw
{TTI::SK_Broadcast, MVT::v8i8, 2}, // punpck/pshuflw
{TTI::SK_Broadcast, MVT::v4i8, 2}, // punpck/pshuflw
{TTI::SK_Broadcast, MVT::v2i8, 1}, // punpck
{TTI::SK_Reverse, MVT::v4i16, 1}, // pshuflw
{TTI::SK_Reverse, MVT::v2i16, 1}, // pshuflw
{TTI::SK_Reverse, MVT::v4i8, 3}, // punpck/pshuflw/packus
{TTI::SK_Reverse, MVT::v2i8, 1}, // punpck
{TTI::SK_PermuteTwoSrc, MVT::v4i16, 2}, // punpck/pshuflw
{TTI::SK_PermuteTwoSrc, MVT::v2i16, 2}, // punpck/pshuflw
{TTI::SK_PermuteTwoSrc, MVT::v8i8, 7}, // punpck/pshuflw
{TTI::SK_PermuteTwoSrc, MVT::v4i8, 4}, // punpck/pshuflw
{TTI::SK_PermuteTwoSrc, MVT::v2i8, 2}, // punpck
{TTI::SK_PermuteSingleSrc, MVT::v4i16, 1}, // pshuflw
{TTI::SK_PermuteSingleSrc, MVT::v2i16, 1}, // pshuflw
{TTI::SK_PermuteSingleSrc, MVT::v8i8, 5}, // punpck/pshuflw
{TTI::SK_PermuteSingleSrc, MVT::v4i8, 3}, // punpck/pshuflw
{TTI::SK_PermuteSingleSrc, MVT::v2i8, 1}, // punpck
};
if (ST->hasSSE2())
if (const auto *Entry =
CostTableLookup(SSE2SubVectorShuffleTbl, Kind, VT.getSimpleVT()))
return Entry->Cost;
}
// We are going to permute multiple sources and the result will be in multiple
// destinations. Providing an accurate cost only for splits where the element
// type remains the same.
if (Kind == TTI::SK_PermuteSingleSrc && LT.first != 1) {
MVT LegalVT = LT.second;
if (LegalVT.isVector() &&
LegalVT.getVectorElementType().getSizeInBits() ==
BaseTp->getElementType()->getPrimitiveSizeInBits() &&
LegalVT.getVectorNumElements() <
cast<FixedVectorType>(BaseTp)->getNumElements()) {
unsigned VecTySize = DL.getTypeStoreSize(BaseTp);
unsigned LegalVTSize = LegalVT.getStoreSize();
// Number of source vectors after legalization:
unsigned NumOfSrcs = (VecTySize + LegalVTSize - 1) / LegalVTSize;
// Number of destination vectors after legalization:
unsigned NumOfDests = LT.first;
auto *SingleOpTy = FixedVectorType::get(BaseTp->getElementType(),
LegalVT.getVectorNumElements());
unsigned NumOfShuffles = (NumOfSrcs - 1) * NumOfDests;
return NumOfShuffles *
getShuffleCost(TTI::SK_PermuteTwoSrc, SingleOpTy, 0, nullptr);
}
return BaseT::getShuffleCost(Kind, BaseTp, Index, SubTp);
}
// For 2-input shuffles, we must account for splitting the 2 inputs into many.
if (Kind == TTI::SK_PermuteTwoSrc && LT.first != 1) {
// We assume that source and destination have the same vector type.
int NumOfDests = LT.first;
int NumOfShufflesPerDest = LT.first * 2 - 1;
LT.first = NumOfDests * NumOfShufflesPerDest;
}
static const CostTblEntry AVX512VBMIShuffleTbl[] = {
{TTI::SK_Reverse, MVT::v64i8, 1}, // vpermb
{TTI::SK_Reverse, MVT::v32i8, 1}, // vpermb
{TTI::SK_PermuteSingleSrc, MVT::v64i8, 1}, // vpermb
{TTI::SK_PermuteSingleSrc, MVT::v32i8, 1}, // vpermb
{TTI::SK_PermuteTwoSrc, MVT::v64i8, 2}, // vpermt2b
{TTI::SK_PermuteTwoSrc, MVT::v32i8, 2}, // vpermt2b
{TTI::SK_PermuteTwoSrc, MVT::v16i8, 2} // vpermt2b
};
if (ST->hasVBMI())
if (const auto *Entry =
CostTableLookup(AVX512VBMIShuffleTbl, Kind, LT.second))
return LT.first * Entry->Cost;
static const CostTblEntry AVX512BWShuffleTbl[] = {
{TTI::SK_Broadcast, MVT::v32i16, 1}, // vpbroadcastw
{TTI::SK_Broadcast, MVT::v64i8, 1}, // vpbroadcastb
{TTI::SK_Reverse, MVT::v32i16, 2}, // vpermw
{TTI::SK_Reverse, MVT::v16i16, 2}, // vpermw
{TTI::SK_Reverse, MVT::v64i8, 2}, // pshufb + vshufi64x2
{TTI::SK_PermuteSingleSrc, MVT::v32i16, 2}, // vpermw
{TTI::SK_PermuteSingleSrc, MVT::v16i16, 2}, // vpermw
{TTI::SK_PermuteSingleSrc, MVT::v64i8, 8}, // extend to v32i16
{TTI::SK_PermuteTwoSrc, MVT::v32i16, 2}, // vpermt2w
{TTI::SK_PermuteTwoSrc, MVT::v16i16, 2}, // vpermt2w
{TTI::SK_PermuteTwoSrc, MVT::v8i16, 2}, // vpermt2w
{TTI::SK_PermuteTwoSrc, MVT::v64i8, 19}, // 6 * v32i8 + 1
};
if (ST->hasBWI())
if (const auto *Entry =
CostTableLookup(AVX512BWShuffleTbl, Kind, LT.second))
return LT.first * Entry->Cost;
static const CostTblEntry AVX512ShuffleTbl[] = {
{TTI::SK_Broadcast, MVT::v8f64, 1}, // vbroadcastpd
{TTI::SK_Broadcast, MVT::v16f32, 1}, // vbroadcastps
{TTI::SK_Broadcast, MVT::v8i64, 1}, // vpbroadcastq
{TTI::SK_Broadcast, MVT::v16i32, 1}, // vpbroadcastd
{TTI::SK_Broadcast, MVT::v32i16, 1}, // vpbroadcastw
{TTI::SK_Broadcast, MVT::v64i8, 1}, // vpbroadcastb
{TTI::SK_Reverse, MVT::v8f64, 1}, // vpermpd
{TTI::SK_Reverse, MVT::v16f32, 1}, // vpermps
{TTI::SK_Reverse, MVT::v8i64, 1}, // vpermq
{TTI::SK_Reverse, MVT::v16i32, 1}, // vpermd
{TTI::SK_PermuteSingleSrc, MVT::v8f64, 1}, // vpermpd
{TTI::SK_PermuteSingleSrc, MVT::v4f64, 1}, // vpermpd
{TTI::SK_PermuteSingleSrc, MVT::v2f64, 1}, // vpermpd
{TTI::SK_PermuteSingleSrc, MVT::v16f32, 1}, // vpermps
{TTI::SK_PermuteSingleSrc, MVT::v8f32, 1}, // vpermps
{TTI::SK_PermuteSingleSrc, MVT::v4f32, 1}, // vpermps
{TTI::SK_PermuteSingleSrc, MVT::v8i64, 1}, // vpermq
{TTI::SK_PermuteSingleSrc, MVT::v4i64, 1}, // vpermq
{TTI::SK_PermuteSingleSrc, MVT::v2i64, 1}, // vpermq
{TTI::SK_PermuteSingleSrc, MVT::v16i32, 1}, // vpermd
{TTI::SK_PermuteSingleSrc, MVT::v8i32, 1}, // vpermd
{TTI::SK_PermuteSingleSrc, MVT::v4i32, 1}, // vpermd
{TTI::SK_PermuteSingleSrc, MVT::v16i8, 1}, // pshufb
{TTI::SK_PermuteTwoSrc, MVT::v8f64, 1}, // vpermt2pd
{TTI::SK_PermuteTwoSrc, MVT::v16f32, 1}, // vpermt2ps
{TTI::SK_PermuteTwoSrc, MVT::v8i64, 1}, // vpermt2q
{TTI::SK_PermuteTwoSrc, MVT::v16i32, 1}, // vpermt2d
{TTI::SK_PermuteTwoSrc, MVT::v4f64, 1}, // vpermt2pd
{TTI::SK_PermuteTwoSrc, MVT::v8f32, 1}, // vpermt2ps
{TTI::SK_PermuteTwoSrc, MVT::v4i64, 1}, // vpermt2q
{TTI::SK_PermuteTwoSrc, MVT::v8i32, 1}, // vpermt2d
{TTI::SK_PermuteTwoSrc, MVT::v2f64, 1}, // vpermt2pd
{TTI::SK_PermuteTwoSrc, MVT::v4f32, 1}, // vpermt2ps
{TTI::SK_PermuteTwoSrc, MVT::v2i64, 1}, // vpermt2q
{TTI::SK_PermuteTwoSrc, MVT::v4i32, 1}, // vpermt2d
// FIXME: This just applies the type legalization cost rules above
// assuming these completely split.
{TTI::SK_PermuteSingleSrc, MVT::v32i16, 14},
{TTI::SK_PermuteSingleSrc, MVT::v64i8, 14},
{TTI::SK_PermuteTwoSrc, MVT::v32i16, 42},
{TTI::SK_PermuteTwoSrc, MVT::v64i8, 42},
};
if (ST->hasAVX512())
if (const auto *Entry = CostTableLookup(AVX512ShuffleTbl, Kind, LT.second))
return LT.first * Entry->Cost;
static const CostTblEntry AVX2ShuffleTbl[] = {
{TTI::SK_Broadcast, MVT::v4f64, 1}, // vbroadcastpd
{TTI::SK_Broadcast, MVT::v8f32, 1}, // vbroadcastps
{TTI::SK_Broadcast, MVT::v4i64, 1}, // vpbroadcastq
{TTI::SK_Broadcast, MVT::v8i32, 1}, // vpbroadcastd
{TTI::SK_Broadcast, MVT::v16i16, 1}, // vpbroadcastw
{TTI::SK_Broadcast, MVT::v32i8, 1}, // vpbroadcastb
{TTI::SK_Reverse, MVT::v4f64, 1}, // vpermpd
{TTI::SK_Reverse, MVT::v8f32, 1}, // vpermps
{TTI::SK_Reverse, MVT::v4i64, 1}, // vpermq
{TTI::SK_Reverse, MVT::v8i32, 1}, // vpermd
{TTI::SK_Reverse, MVT::v16i16, 2}, // vperm2i128 + pshufb
{TTI::SK_Reverse, MVT::v32i8, 2}, // vperm2i128 + pshufb
{TTI::SK_Select, MVT::v16i16, 1}, // vpblendvb
{TTI::SK_Select, MVT::v32i8, 1}, // vpblendvb
{TTI::SK_PermuteSingleSrc, MVT::v4f64, 1}, // vpermpd
{TTI::SK_PermuteSingleSrc, MVT::v8f32, 1}, // vpermps
{TTI::SK_PermuteSingleSrc, MVT::v4i64, 1}, // vpermq
{TTI::SK_PermuteSingleSrc, MVT::v8i32, 1}, // vpermd
{TTI::SK_PermuteSingleSrc, MVT::v16i16, 4}, // vperm2i128 + 2*vpshufb
// + vpblendvb
{TTI::SK_PermuteSingleSrc, MVT::v32i8, 4}, // vperm2i128 + 2*vpshufb
// + vpblendvb
{TTI::SK_PermuteTwoSrc, MVT::v4f64, 3}, // 2*vpermpd + vblendpd
{TTI::SK_PermuteTwoSrc, MVT::v8f32, 3}, // 2*vpermps + vblendps
{TTI::SK_PermuteTwoSrc, MVT::v4i64, 3}, // 2*vpermq + vpblendd
{TTI::SK_PermuteTwoSrc, MVT::v8i32, 3}, // 2*vpermd + vpblendd
{TTI::SK_PermuteTwoSrc, MVT::v16i16, 7}, // 2*vperm2i128 + 4*vpshufb
// + vpblendvb
{TTI::SK_PermuteTwoSrc, MVT::v32i8, 7}, // 2*vperm2i128 + 4*vpshufb
// + vpblendvb
};
if (ST->hasAVX2())
if (const auto *Entry = CostTableLookup(AVX2ShuffleTbl, Kind, LT.second))
return LT.first * Entry->Cost;
static const CostTblEntry XOPShuffleTbl[] = {
{TTI::SK_PermuteSingleSrc, MVT::v4f64, 2}, // vperm2f128 + vpermil2pd
{TTI::SK_PermuteSingleSrc, MVT::v8f32, 2}, // vperm2f128 + vpermil2ps
{TTI::SK_PermuteSingleSrc, MVT::v4i64, 2}, // vperm2f128 + vpermil2pd
{TTI::SK_PermuteSingleSrc, MVT::v8i32, 2}, // vperm2f128 + vpermil2ps
{TTI::SK_PermuteSingleSrc, MVT::v16i16, 4}, // vextractf128 + 2*vpperm
// + vinsertf128
{TTI::SK_PermuteSingleSrc, MVT::v32i8, 4}, // vextractf128 + 2*vpperm
// + vinsertf128
{TTI::SK_PermuteTwoSrc, MVT::v16i16, 9}, // 2*vextractf128 + 6*vpperm
// + vinsertf128
{TTI::SK_PermuteTwoSrc, MVT::v8i16, 1}, // vpperm
{TTI::SK_PermuteTwoSrc, MVT::v32i8, 9}, // 2*vextractf128 + 6*vpperm
// + vinsertf128
{TTI::SK_PermuteTwoSrc, MVT::v16i8, 1}, // vpperm
};
if (ST->hasXOP())
if (const auto *Entry = CostTableLookup(XOPShuffleTbl, Kind, LT.second))
return LT.first * Entry->Cost;
static const CostTblEntry AVX1ShuffleTbl[] = {
{TTI::SK_Broadcast, MVT::v4f64, 2}, // vperm2f128 + vpermilpd
{TTI::SK_Broadcast, MVT::v8f32, 2}, // vperm2f128 + vpermilps
{TTI::SK_Broadcast, MVT::v4i64, 2}, // vperm2f128 + vpermilpd
{TTI::SK_Broadcast, MVT::v8i32, 2}, // vperm2f128 + vpermilps
{TTI::SK_Broadcast, MVT::v16i16, 3}, // vpshuflw + vpshufd + vinsertf128
{TTI::SK_Broadcast, MVT::v32i8, 2}, // vpshufb + vinsertf128
{TTI::SK_Reverse, MVT::v4f64, 2}, // vperm2f128 + vpermilpd
{TTI::SK_Reverse, MVT::v8f32, 2}, // vperm2f128 + vpermilps
{TTI::SK_Reverse, MVT::v4i64, 2}, // vperm2f128 + vpermilpd
{TTI::SK_Reverse, MVT::v8i32, 2}, // vperm2f128 + vpermilps
{TTI::SK_Reverse, MVT::v16i16, 4}, // vextractf128 + 2*pshufb
// + vinsertf128
{TTI::SK_Reverse, MVT::v32i8, 4}, // vextractf128 + 2*pshufb
// + vinsertf128
{TTI::SK_Select, MVT::v4i64, 1}, // vblendpd
{TTI::SK_Select, MVT::v4f64, 1}, // vblendpd
{TTI::SK_Select, MVT::v8i32, 1}, // vblendps
{TTI::SK_Select, MVT::v8f32, 1}, // vblendps
{TTI::SK_Select, MVT::v16i16, 3}, // vpand + vpandn + vpor
{TTI::SK_Select, MVT::v32i8, 3}, // vpand + vpandn + vpor
{TTI::SK_PermuteSingleSrc, MVT::v4f64, 2}, // vperm2f128 + vshufpd
{TTI::SK_PermuteSingleSrc, MVT::v4i64, 2}, // vperm2f128 + vshufpd
{TTI::SK_PermuteSingleSrc, MVT::v8f32, 4}, // 2*vperm2f128 + 2*vshufps
{TTI::SK_PermuteSingleSrc, MVT::v8i32, 4}, // 2*vperm2f128 + 2*vshufps
{TTI::SK_PermuteSingleSrc, MVT::v16i16, 8}, // vextractf128 + 4*pshufb
// + 2*por + vinsertf128
{TTI::SK_PermuteSingleSrc, MVT::v32i8, 8}, // vextractf128 + 4*pshufb
// + 2*por + vinsertf128
{TTI::SK_PermuteTwoSrc, MVT::v4f64, 3}, // 2*vperm2f128 + vshufpd
{TTI::SK_PermuteTwoSrc, MVT::v4i64, 3}, // 2*vperm2f128 + vshufpd
{TTI::SK_PermuteTwoSrc, MVT::v8f32, 4}, // 2*vperm2f128 + 2*vshufps
{TTI::SK_PermuteTwoSrc, MVT::v8i32, 4}, // 2*vperm2f128 + 2*vshufps
{TTI::SK_PermuteTwoSrc, MVT::v16i16, 15}, // 2*vextractf128 + 8*pshufb
// + 4*por + vinsertf128
{TTI::SK_PermuteTwoSrc, MVT::v32i8, 15}, // 2*vextractf128 + 8*pshufb
// + 4*por + vinsertf128
};
if (ST->hasAVX())
if (const auto *Entry = CostTableLookup(AVX1ShuffleTbl, Kind, LT.second))
return LT.first * Entry->Cost;
static const CostTblEntry SSE41ShuffleTbl[] = {
{TTI::SK_Select, MVT::v2i64, 1}, // pblendw
{TTI::SK_Select, MVT::v2f64, 1}, // movsd
{TTI::SK_Select, MVT::v4i32, 1}, // pblendw
{TTI::SK_Select, MVT::v4f32, 1}, // blendps
{TTI::SK_Select, MVT::v8i16, 1}, // pblendw
{TTI::SK_Select, MVT::v16i8, 1} // pblendvb
};
if (ST->hasSSE41())
if (const auto *Entry = CostTableLookup(SSE41ShuffleTbl, Kind, LT.second))
return LT.first * Entry->Cost;
static const CostTblEntry SSSE3ShuffleTbl[] = {
{TTI::SK_Broadcast, MVT::v8i16, 1}, // pshufb
{TTI::SK_Broadcast, MVT::v16i8, 1}, // pshufb
{TTI::SK_Reverse, MVT::v8i16, 1}, // pshufb
{TTI::SK_Reverse, MVT::v16i8, 1}, // pshufb
{TTI::SK_Select, MVT::v8i16, 3}, // 2*pshufb + por
{TTI::SK_Select, MVT::v16i8, 3}, // 2*pshufb + por
{TTI::SK_PermuteSingleSrc, MVT::v8i16, 1}, // pshufb
{TTI::SK_PermuteSingleSrc, MVT::v16i8, 1}, // pshufb
{TTI::SK_PermuteTwoSrc, MVT::v8i16, 3}, // 2*pshufb + por
{TTI::SK_PermuteTwoSrc, MVT::v16i8, 3}, // 2*pshufb + por
};
if (ST->hasSSSE3())
if (const auto *Entry = CostTableLookup(SSSE3ShuffleTbl, Kind, LT.second))
return LT.first * Entry->Cost;
static const CostTblEntry SSE2ShuffleTbl[] = {
{TTI::SK_Broadcast, MVT::v2f64, 1}, // shufpd
{TTI::SK_Broadcast, MVT::v2i64, 1}, // pshufd
{TTI::SK_Broadcast, MVT::v4i32, 1}, // pshufd
{TTI::SK_Broadcast, MVT::v8i16, 2}, // pshuflw + pshufd
{TTI::SK_Broadcast, MVT::v16i8, 3}, // unpck + pshuflw + pshufd
{TTI::SK_Reverse, MVT::v2f64, 1}, // shufpd
{TTI::SK_Reverse, MVT::v2i64, 1}, // pshufd
{TTI::SK_Reverse, MVT::v4i32, 1}, // pshufd
{TTI::SK_Reverse, MVT::v8i16, 3}, // pshuflw + pshufhw + pshufd
{TTI::SK_Reverse, MVT::v16i8, 9}, // 2*pshuflw + 2*pshufhw
// + 2*pshufd + 2*unpck + packus
{TTI::SK_Select, MVT::v2i64, 1}, // movsd
{TTI::SK_Select, MVT::v2f64, 1}, // movsd
{TTI::SK_Select, MVT::v4i32, 2}, // 2*shufps
{TTI::SK_Select, MVT::v8i16, 3}, // pand + pandn + por
{TTI::SK_Select, MVT::v16i8, 3}, // pand + pandn + por
{TTI::SK_PermuteSingleSrc, MVT::v2f64, 1}, // shufpd
{TTI::SK_PermuteSingleSrc, MVT::v2i64, 1}, // pshufd
{TTI::SK_PermuteSingleSrc, MVT::v4i32, 1}, // pshufd
{TTI::SK_PermuteSingleSrc, MVT::v8i16, 5}, // 2*pshuflw + 2*pshufhw
// + pshufd/unpck
{ TTI::SK_PermuteSingleSrc, MVT::v16i8, 10 }, // 2*pshuflw + 2*pshufhw
// + 2*pshufd + 2*unpck + 2*packus
{ TTI::SK_PermuteTwoSrc, MVT::v2f64, 1 }, // shufpd
{ TTI::SK_PermuteTwoSrc, MVT::v2i64, 1 }, // shufpd
{ TTI::SK_PermuteTwoSrc, MVT::v4i32, 2 }, // 2*{unpck,movsd,pshufd}
{ TTI::SK_PermuteTwoSrc, MVT::v8i16, 8 }, // blend+permute
{ TTI::SK_PermuteTwoSrc, MVT::v16i8, 13 }, // blend+permute
};
if (ST->hasSSE2())
if (const auto *Entry = CostTableLookup(SSE2ShuffleTbl, Kind, LT.second))
return LT.first * Entry->Cost;
static const CostTblEntry SSE1ShuffleTbl[] = {
{ TTI::SK_Broadcast, MVT::v4f32, 1 }, // shufps
{ TTI::SK_Reverse, MVT::v4f32, 1 }, // shufps
{ TTI::SK_Select, MVT::v4f32, 2 }, // 2*shufps
{ TTI::SK_PermuteSingleSrc, MVT::v4f32, 1 }, // shufps
{ TTI::SK_PermuteTwoSrc, MVT::v4f32, 2 }, // 2*shufps
};
if (ST->hasSSE1())
if (const auto *Entry = CostTableLookup(SSE1ShuffleTbl, Kind, LT.second))
return LT.first * Entry->Cost;
return BaseT::getShuffleCost(Kind, BaseTp, Index, SubTp);
}
int X86TTIImpl::getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src,
TTI::TargetCostKind CostKind,
const Instruction *I) {
int ISD = TLI->InstructionOpcodeToISD(Opcode);
assert(ISD && "Invalid opcode");
// TODO: Allow non-throughput costs that aren't binary.
auto AdjustCost = [&CostKind](int Cost) {
if (CostKind != TTI::TCK_RecipThroughput)
return Cost == 0 ? 0 : 1;
return Cost;
};
// 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 AVX512BWConversionTbl[] {
{ ISD::SIGN_EXTEND, MVT::v32i16, MVT::v32i8, 1 },
{ ISD::ZERO_EXTEND, MVT::v32i16, MVT::v32i8, 1 },
// Mask sign extend has an instruction.
{ ISD::SIGN_EXTEND, MVT::v2i8, MVT::v2i1, 1 },
{ ISD::SIGN_EXTEND, MVT::v2i16, MVT::v2i1, 1 },
{ ISD::SIGN_EXTEND, MVT::v4i8, MVT::v4i1, 1 },
{ ISD::SIGN_EXTEND, MVT::v4i16, MVT::v4i1, 1 },
{ ISD::SIGN_EXTEND, MVT::v8i8, MVT::v8i1, 1 },
{ ISD::SIGN_EXTEND, MVT::v8i16, MVT::v8i1, 1 },
{ ISD::SIGN_EXTEND, MVT::v16i8, MVT::v16i1, 1 },
{ ISD::SIGN_EXTEND, MVT::v16i16, MVT::v16i1, 1 },
{ ISD::SIGN_EXTEND, MVT::v32i8, MVT::v32i1, 1 },
{ ISD::SIGN_EXTEND, MVT::v32i16, MVT::v32i1, 1 },
{ ISD::SIGN_EXTEND, MVT::v64i8, MVT::v64i1, 1 },
// Mask zero extend is a sext + shift.
{ ISD::ZERO_EXTEND, MVT::v2i8, MVT::v2i1, 2 },
{ ISD::ZERO_EXTEND, MVT::v2i16, MVT::v2i1, 2 },
{ ISD::ZERO_EXTEND, MVT::v4i8, MVT::v4i1, 2 },
{ ISD::ZERO_EXTEND, MVT::v4i16, MVT::v4i1, 2 },
{ ISD::ZERO_EXTEND, MVT::v8i8, MVT::v8i1, 2 },
{ ISD::ZERO_EXTEND, MVT::v8i16, MVT::v8i1, 2 },
{ ISD::ZERO_EXTEND, MVT::v16i8, MVT::v16i1, 2 },
{ ISD::ZERO_EXTEND, MVT::v16i16, MVT::v16i1, 2 },
{ ISD::ZERO_EXTEND, MVT::v32i8, MVT::v32i1, 2 },
{ ISD::ZERO_EXTEND, MVT::v32i16, MVT::v32i1, 2 },
{ ISD::ZERO_EXTEND, MVT::v64i8, MVT::v64i1, 2 },
{ ISD::TRUNCATE, MVT::v32i8, MVT::v32i16, 2 },
{ ISD::TRUNCATE, MVT::v16i8, MVT::v16i16, 2 }, // widen to zmm
{ ISD::TRUNCATE, MVT::v2i1, MVT::v2i8, 2 }, // widen to zmm
{ ISD::TRUNCATE, MVT::v2i1, MVT::v2i16, 2 }, // widen to zmm
{ ISD::TRUNCATE, MVT::v4i1, MVT::v4i8, 2 }, // widen to zmm
{ ISD::TRUNCATE, MVT::v4i1, MVT::v4i16, 2 }, // widen to zmm
{ ISD::TRUNCATE, MVT::v8i1, MVT::v8i8, 2 }, // widen to zmm
{ ISD::TRUNCATE, MVT::v8i1, MVT::v8i16, 2 }, // widen to zmm
{ ISD::TRUNCATE, MVT::v16i1, MVT::v16i8, 2 }, // widen to zmm
{ ISD::TRUNCATE, MVT::v16i1, MVT::v16i16, 2 }, // widen to zmm
{ ISD::TRUNCATE, MVT::v32i1, MVT::v32i8, 2 }, // widen to zmm
{ ISD::TRUNCATE, MVT::v32i1, MVT::v32i16, 2 },
{ ISD::TRUNCATE, MVT::v64i1, MVT::v64i8, 2 },
};
static const TypeConversionCostTblEntry AVX512DQConversionTbl[] = {
{ ISD::SINT_TO_FP, MVT::v8f32, MVT::v8i64, 1 },
{ ISD::SINT_TO_FP, MVT::v8f64, MVT::v8i64, 1 },
{ ISD::UINT_TO_FP, MVT::v8f32, MVT::v8i64, 1 },
{ ISD::UINT_TO_FP, MVT::v8f64, MVT::v8i64, 1 },
{ ISD::FP_TO_SINT, MVT::v8i64, MVT::v8f32, 1 },
{ ISD::FP_TO_SINT, MVT::v8i64, MVT::v8f64, 1 },
{ ISD::FP_TO_UINT, MVT::v8i64, MVT::v8f32, 1 },
{ ISD::FP_TO_UINT, MVT::v8i64, MVT::v8f64, 1 },
};
// TODO: For AVX512DQ + AVX512VL, we also have cheap casts for 128-bit and
// 256-bit wide vectors.
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::TRUNCATE, MVT::v2i1, MVT::v2i8, 3 }, // sext+vpslld+vptestmd
{ ISD::TRUNCATE, MVT::v4i1, MVT::v4i8, 3 }, // sext+vpslld+vptestmd
{ ISD::TRUNCATE, MVT::v8i1, MVT::v8i8, 3 }, // sext+vpslld+vptestmd
{ ISD::TRUNCATE, MVT::v16i1, MVT::v16i8, 3 }, // sext+vpslld+vptestmd
{ ISD::TRUNCATE, MVT::v2i1, MVT::v2i16, 3 }, // sext+vpsllq+vptestmq
{ ISD::TRUNCATE, MVT::v4i1, MVT::v4i16, 3 }, // sext+vpsllq+vptestmq
{ ISD::TRUNCATE, MVT::v8i1, MVT::v8i16, 3 }, // sext+vpsllq+vptestmq
{ ISD::TRUNCATE, MVT::v16i1, MVT::v16i16, 3 }, // sext+vpslld+vptestmd
{ ISD::TRUNCATE, MVT::v2i1, MVT::v2i32, 2 }, // zmm vpslld+vptestmd
{ ISD::TRUNCATE, MVT::v4i1, MVT::v4i32, 2 }, // zmm vpslld+vptestmd
{ ISD::TRUNCATE, MVT::v8i1, MVT::v8i32, 2 }, // zmm vpslld+vptestmd
{ ISD::TRUNCATE, MVT::v16i1, MVT::v16i32, 2 }, // vpslld+vptestmd
{ ISD::TRUNCATE, MVT::v2i1, MVT::v2i64, 2 }, // zmm vpsllq+vptestmq
{ ISD::TRUNCATE, MVT::v4i1, MVT::v4i64, 2 }, // zmm vpsllq+vptestmq
{ ISD::TRUNCATE, MVT::v8i1, MVT::v8i64, 2 }, // vpsllq+vptestmq
{ ISD::TRUNCATE, MVT::v16i8, MVT::v16i32, 2 },
{ ISD::TRUNCATE, MVT::v16i16, MVT::v16i32, 2 },
{ ISD::TRUNCATE, MVT::v8i8, MVT::v8i64, 2 },
{ ISD::TRUNCATE, MVT::v8i16, MVT::v8i64, 2 },
{ ISD::TRUNCATE, MVT::v8i32, MVT::v8i64, 1 },
{ ISD::TRUNCATE, MVT::v4i32, MVT::v4i64, 1 }, // zmm vpmovqd
{ ISD::TRUNCATE, MVT::v16i8, MVT::v16i64, 5 },// 2*vpmovqd+concat+vpmovdb
{ ISD::TRUNCATE, MVT::v16i8, MVT::v16i16, 3 }, // extend to v16i32
{ ISD::TRUNCATE, MVT::v32i8, MVT::v32i16, 8 },
// Sign extend is zmm vpternlogd+vptruncdb.
// Zero extend is zmm broadcast load+vptruncdw.
{ ISD::SIGN_EXTEND, MVT::v2i8, MVT::v2i1, 3 },
{ ISD::ZERO_EXTEND, MVT::v2i8, MVT::v2i1, 4 },
{ ISD::SIGN_EXTEND, MVT::v4i8, MVT::v4i1, 3 },
{ ISD::ZERO_EXTEND, MVT::v4i8, MVT::v4i1, 4 },
{ ISD::SIGN_EXTEND, MVT::v8i8, MVT::v8i1, 3 },
{ ISD::ZERO_EXTEND, MVT::v8i8, MVT::v8i1, 4 },
{ ISD::SIGN_EXTEND, MVT::v16i8, MVT::v16i1, 3 },
{ ISD::ZERO_EXTEND, MVT::v16i8, MVT::v16i1, 4 },
// Sign extend is zmm vpternlogd+vptruncdw.
// Zero extend is zmm vpternlogd+vptruncdw+vpsrlw.
{ ISD::SIGN_EXTEND, MVT::v2i16, MVT::v2i1, 3 },
{ ISD::ZERO_EXTEND, MVT::v2i16, MVT::v2i1, 4 },
{ ISD::SIGN_EXTEND, MVT::v4i16, MVT::v4i1, 3 },
{ ISD::ZERO_EXTEND, MVT::v4i16, MVT::v4i1, 4 },
{ ISD::SIGN_EXTEND, MVT::v8i16, MVT::v8i1, 3 },
{ ISD::ZERO_EXTEND, MVT::v8i16, MVT::v8i1, 4 },
{ ISD::SIGN_EXTEND, MVT::v16i16, MVT::v16i1, 3 },
{ ISD::ZERO_EXTEND, MVT::v16i16, MVT::v16i1, 4 },
{ ISD::SIGN_EXTEND, MVT::v2i32, MVT::v2i1, 1 }, // zmm vpternlogd
{ ISD::ZERO_EXTEND, MVT::v2i32, MVT::v2i1, 2 }, // zmm vpternlogd+psrld
{ ISD::SIGN_EXTEND, MVT::v4i32, MVT::v4i1, 1 }, // zmm vpternlogd
{ ISD::ZERO_EXTEND, MVT::v4i32, MVT::v4i1, 2 }, // zmm vpternlogd+psrld
{ ISD::SIGN_EXTEND, MVT::v8i32, MVT::v8i1, 1 }, // zmm vpternlogd
{ ISD::ZERO_EXTEND, MVT::v8i32, MVT::v8i1, 2 }, // zmm vpternlogd+psrld
{ ISD::SIGN_EXTEND, MVT::v2i64, MVT::v2i1, 1 }, // zmm vpternlogq
{ ISD::ZERO_EXTEND, MVT::v2i64, MVT::v2i1, 2 }, // zmm vpternlogq+psrlq
{ ISD::SIGN_EXTEND, MVT::v4i64, MVT::v4i1, 1 }, // zmm vpternlogq
{ ISD::ZERO_EXTEND, MVT::v4i64, MVT::v4i1, 2 }, // zmm vpternlogq+psrlq
{ ISD::SIGN_EXTEND, MVT::v16i32, MVT::v16i1, 1 }, // vpternlogd
{ ISD::ZERO_EXTEND, MVT::v16i32, MVT::v16i1, 2 }, // vpternlogd+psrld
{ ISD::SIGN_EXTEND, MVT::v8i64, MVT::v8i1, 1 }, // vpternlogq
{ ISD::ZERO_EXTEND, MVT::v8i64, MVT::v8i1, 2 }, // vpternlogq+psrlq
{ ISD::SIGN_EXTEND, MVT::v16i32, MVT::v16i8, 1 },
{ 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::v8i8, 1 },
{ ISD::ZERO_EXTEND, MVT::v8i64, MVT::v8i8, 1 },
{ ISD::SIGN_EXTEND, MVT::v8i64, MVT::v8i16, 1 },
{ ISD::ZERO_EXTEND, MVT::v8i64, MVT::v8i16, 1 },
{ ISD::SIGN_EXTEND, MVT::v8i64, MVT::v8i32, 1 },
{ ISD::ZERO_EXTEND, MVT::v8i64, MVT::v8i32, 1 },
{ ISD::SIGN_EXTEND, MVT::v32i16, MVT::v32i8, 3 }, // FIXME: May not be right
{ ISD::ZERO_EXTEND, MVT::v32i16, MVT::v32i8, 3 }, // FIXME: May not be right
{ ISD::SINT_TO_FP, MVT::v8f64, MVT::v8i1, 4 },
{ ISD::SINT_TO_FP, MVT::v16f32, MVT::v16i1, 3 },
{ ISD::SINT_TO_FP, MVT::v8f64, MVT::v8i8, 2 },
{ ISD::SINT_TO_FP, MVT::v16f32, MVT::v16i8, 2 },
{ ISD::SINT_TO_FP, MVT::v8f64, MVT::v8i16, 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::v8i32, 1 },
{ ISD::UINT_TO_FP, MVT::v8f64, MVT::v8i1, 4 },
{ ISD::UINT_TO_FP, MVT::v16f32, MVT::v16i1, 3 },
{ ISD::UINT_TO_FP, MVT::v8f64, MVT::v8i8, 2 },
{ ISD::UINT_TO_FP, MVT::v16f32, MVT::v16i8, 2 },
{ ISD::UINT_TO_FP, MVT::v8f64, MVT::v8i16, 2 },
{ ISD::UINT_TO_FP, MVT::v16f32, MVT::v16i16, 2 },
{ ISD::UINT_TO_FP, MVT::v8f64, MVT::v8i32, 1 },
{ ISD::UINT_TO_FP, MVT::v16f32, MVT::v16i32, 1 },
{ ISD::UINT_TO_FP, MVT::v8f32, MVT::v8i64, 26 },
{ ISD::UINT_TO_FP, MVT::v8f64, MVT::v8i64, 5 },
{ ISD::FP_TO_SINT, MVT::v8i8, MVT::v8f64, 3 },
{ ISD::FP_TO_SINT, MVT::v8i16, MVT::v8f64, 3 },
{ ISD::FP_TO_SINT, MVT::v16i8, MVT::v16f32, 3 },
{ ISD::FP_TO_SINT, MVT::v16i16, MVT::v16f32, 3 },
{ ISD::FP_TO_UINT, MVT::v8i32, MVT::v8f64, 1 },
{ ISD::FP_TO_UINT, MVT::v8i16, MVT::v8f64, 3 },
{ ISD::FP_TO_UINT, MVT::v8i8, MVT::v8f64, 3 },
{ ISD::FP_TO_UINT, MVT::v16i32, MVT::v16f32, 1 },
{ ISD::FP_TO_UINT, MVT::v16i16, MVT::v16f32, 3 },
{ ISD::FP_TO_UINT, MVT::v16i8, MVT::v16f32, 3 },
};
static const TypeConversionCostTblEntry AVX512BWVLConversionTbl[] {
// Mask sign extend has an instruction.
{ ISD::SIGN_EXTEND, MVT::v2i8, MVT::v2i1, 1 },
{ ISD::SIGN_EXTEND, MVT::v2i16, MVT::v2i1, 1 },
{ ISD::SIGN_EXTEND, MVT::v4i8, MVT::v4i1, 1 },
{ ISD::SIGN_EXTEND, MVT::v4i16, MVT::v4i1, 1 },
{ ISD::SIGN_EXTEND, MVT::v8i8, MVT::v8i1, 1 },
{ ISD::SIGN_EXTEND, MVT::v8i16, MVT::v8i1, 1 },
{ ISD::SIGN_EXTEND, MVT::v16i8, MVT::v16i1, 1 },
{ ISD::SIGN_EXTEND, MVT::v16i16, MVT::v16i1, 1 },
{ ISD::SIGN_EXTEND, MVT::v32i8, MVT::v32i1, 1 },
// Mask zero extend is a sext + shift.
{ ISD::ZERO_EXTEND, MVT::v2i8, MVT::v2i1, 2 },
{ ISD::ZERO_EXTEND, MVT::v2i16, MVT::v2i1, 2 },
{ ISD::ZERO_EXTEND, MVT::v4i8, MVT::v4i1, 2 },
{ ISD::ZERO_EXTEND, MVT::v4i16, MVT::v4i1, 2 },
{ ISD::ZERO_EXTEND, MVT::v8i8, MVT::v8i1, 2 },
{ ISD::ZERO_EXTEND, MVT::v8i16, MVT::v8i1, 2 },
{ ISD::ZERO_EXTEND, MVT::v16i8, MVT::v16i1, 2 },
{ ISD::ZERO_EXTEND, MVT::v16i16, MVT::v16i1, 2 },
{ ISD::ZERO_EXTEND, MVT::v32i8, MVT::v32i1, 2 },
{ ISD::TRUNCATE, MVT::v16i8, MVT::v16i16, 2 },
{ ISD::TRUNCATE, MVT::v2i1, MVT::v2i8, 2 }, // vpsllw+vptestmb
{ ISD::TRUNCATE, MVT::v2i1, MVT::v2i16, 2 }, // vpsllw+vptestmw
{ ISD::TRUNCATE, MVT::v4i1, MVT::v4i8, 2 }, // vpsllw+vptestmb
{ ISD::TRUNCATE, MVT::v4i1, MVT::v4i16, 2 }, // vpsllw+vptestmw
{ ISD::TRUNCATE, MVT::v8i1, MVT::v8i8, 2 }, // vpsllw+vptestmb
{ ISD::TRUNCATE, MVT::v8i1, MVT::v8i16, 2 }, // vpsllw+vptestmw
{ ISD::TRUNCATE, MVT::v16i1, MVT::v16i8, 2 }, // vpsllw+vptestmb
{ ISD::TRUNCATE, MVT::v16i1, MVT::v16i16, 2 }, // vpsllw+vptestmw
{ ISD::TRUNCATE, MVT::v32i1, MVT::v32i8, 2 }, // vpsllw+vptestmb
};
static const TypeConversionCostTblEntry AVX512DQVLConversionTbl[] = {
{ ISD::SINT_TO_FP, MVT::v2f32, MVT::v2i64, 1 },
{ ISD::SINT_TO_FP, MVT::v2f64, MVT::v2i64, 1 },
{ ISD::SINT_TO_FP, MVT::v4f32, MVT::v4i64, 1 },
{ ISD::SINT_TO_FP, MVT::v4f64, MVT::v4i64, 1 },
{ ISD::UINT_TO_FP, MVT::v2f32, MVT::v2i64, 1 },
{ ISD::UINT_TO_FP, MVT::v2f64, MVT::v2i64, 1 },
{ ISD::UINT_TO_FP, MVT::v4f32, MVT::v4i64, 1 },
{ ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i64, 1 },
{ ISD::FP_TO_SINT, MVT::v2i64, MVT::v2f32, 1 },
{ ISD::FP_TO_SINT, MVT::v4i64, MVT::v4f32, 1 },
{ ISD::FP_TO_SINT, MVT::v2i64, MVT::v2f64, 1 },
{ ISD::FP_TO_SINT, MVT::v4i64, MVT::v4f64, 1 },
{ ISD::FP_TO_UINT, MVT::v2i64, MVT::v2f32, 1 },
{ ISD::FP_TO_UINT, MVT::v4i64, MVT::v4f32, 1 },
{ ISD::FP_TO_UINT, MVT::v2i64, MVT::v2f64, 1 },
{ ISD::FP_TO_UINT, MVT::v4i64, MVT::v4f64, 1 },
};
static const TypeConversionCostTblEntry AVX512VLConversionTbl[] = {
{ ISD::TRUNCATE, MVT::v2i1, MVT::v2i8, 3 }, // sext+vpslld+vptestmd
{ ISD::TRUNCATE, MVT::v4i1, MVT::v4i8, 3 }, // sext+vpslld+vptestmd
{ ISD::TRUNCATE, MVT::v8i1, MVT::v8i8, 3 }, // sext+vpslld+vptestmd
{ ISD::TRUNCATE, MVT::v16i1, MVT::v16i8, 8 }, // split+2*v8i8
{ ISD::TRUNCATE, MVT::v2i1, MVT::v2i16, 3 }, // sext+vpsllq+vptestmq
{ ISD::TRUNCATE, MVT::v4i1, MVT::v4i16, 3 }, // sext+vpsllq+vptestmq
{ ISD::TRUNCATE, MVT::v8i1, MVT::v8i16, 3 }, // sext+vpsllq+vptestmq
{ ISD::TRUNCATE, MVT::v16i1, MVT::v16i16, 8 }, // split+2*v8i16
{ ISD::TRUNCATE, MVT::v2i1, MVT::v2i32, 2 }, // vpslld+vptestmd
{ ISD::TRUNCATE, MVT::v4i1, MVT::v4i32, 2 }, // vpslld+vptestmd
{ ISD::TRUNCATE, MVT::v8i1, MVT::v8i32, 2 }, // vpslld+vptestmd
{ ISD::TRUNCATE, MVT::v2i1, MVT::v2i64, 2 }, // vpsllq+vptestmq
{ ISD::TRUNCATE, MVT::v4i1, MVT::v4i64, 2 }, // vpsllq+vptestmq
{ ISD::TRUNCATE, MVT::v4i32, MVT::v4i64, 1 }, // vpmovqd
// sign extend is vpcmpeq+maskedmove+vpmovdw+vpacksswb
// zero extend is vpcmpeq+maskedmove+vpmovdw+vpsrlw+vpackuswb
{ ISD::SIGN_EXTEND, MVT::v2i8, MVT::v2i1, 5 },
{ ISD::ZERO_EXTEND, MVT::v2i8, MVT::v2i1, 6 },
{ ISD::SIGN_EXTEND, MVT::v4i8, MVT::v4i1, 5 },
{ ISD::ZERO_EXTEND, MVT::v4i8, MVT::v4i1, 6 },
{ ISD::SIGN_EXTEND, MVT::v8i8, MVT::v8i1, 5 },
{ ISD::ZERO_EXTEND, MVT::v8i8, MVT::v8i1, 6 },
{ ISD::SIGN_EXTEND, MVT::v16i8, MVT::v16i1, 10 },
{ ISD::ZERO_EXTEND, MVT::v16i8, MVT::v16i1, 12 },
// sign extend is vpcmpeq+maskedmove+vpmovdw
// zero extend is vpcmpeq+maskedmove+vpmovdw+vpsrlw
{ ISD::SIGN_EXTEND, MVT::v2i16, MVT::v2i1, 4 },
{ ISD::ZERO_EXTEND, MVT::v2i16, MVT::v2i1, 5 },
{ ISD::SIGN_EXTEND, MVT::v4i16, MVT::v4i1, 4 },
{ ISD::ZERO_EXTEND, MVT::v4i16, MVT::v4i1, 5 },
{ ISD::SIGN_EXTEND, MVT::v8i16, MVT::v8i1, 4 },
{ ISD::ZERO_EXTEND, MVT::v8i16, MVT::v8i1, 5 },
{ ISD::SIGN_EXTEND, MVT::v16i16, MVT::v16i1, 10 },
{ ISD::ZERO_EXTEND, MVT::v16i16, MVT::v16i1, 12 },
{ ISD::SIGN_EXTEND, MVT::v2i32, MVT::v2i1, 1 }, // vpternlogd
{ ISD::ZERO_EXTEND, MVT::v2i32, MVT::v2i1, 2 }, // vpternlogd+psrld
{ ISD::SIGN_EXTEND, MVT::v4i32, MVT::v4i1, 1 }, // vpternlogd
{ ISD::ZERO_EXTEND, MVT::v4i32, MVT::v4i1, 2 }, // vpternlogd+psrld
{ ISD::SIGN_EXTEND, MVT::v8i32, MVT::v8i1, 1 }, // vpternlogd
{ ISD::ZERO_EXTEND, MVT::v8i32, MVT::v8i1, 2 }, // vpternlogd+psrld
{ ISD::SIGN_EXTEND, MVT::v2i64, MVT::v2i1, 1 }, // vpternlogq
{ ISD::ZERO_EXTEND, MVT::v2i64, MVT::v2i1, 2 }, // vpternlogq+psrlq
{ ISD::SIGN_EXTEND, MVT::v4i64, MVT::v4i1, 1 }, // vpternlogq
{ ISD::ZERO_EXTEND, MVT::v4i64, MVT::v4i1, 2 }, // vpternlogq+psrlq
{ ISD::UINT_TO_FP, MVT::v2f64, MVT::v2i8, 2 },
{ ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i8, 2 },
{ ISD::UINT_TO_FP, MVT::v8f32, MVT::v8i8, 2 },
{ ISD::UINT_TO_FP, MVT::v2f64, MVT::v2i16, 5 },
{ ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i16, 2 },
{ ISD::UINT_TO_FP, MVT::v8f32, MVT::v8i16, 2 },
{ ISD::UINT_TO_FP, MVT::v2f32, MVT::v2i32, 2 },
{ ISD::UINT_TO_FP, MVT::v2f64, MVT::v2i32, 1 },
{ ISD::UINT_TO_FP, MVT::v4f32, MVT::v4i32, 1 },
{ ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i32, 1 },
{ ISD::UINT_TO_FP, MVT::v8f32, MVT::v8i32, 1 },
{ ISD::UINT_TO_FP, MVT::v2f32, MVT::v2i64, 5 },
{ ISD::UINT_TO_FP, MVT::v2f64, MVT::v2i64, 5 },
{ ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i64, 5 },
{ ISD::UINT_TO_FP, MVT::f32, MVT::i64, 1 },
{ ISD::UINT_TO_FP, MVT::f64, MVT::i64, 1 },
{ ISD::FP_TO_SINT, MVT::v8i8, MVT::v8f32, 3 },
{ ISD::FP_TO_UINT, MVT::v8i8, MVT::v8f32, 3 },
{ ISD::FP_TO_UINT, MVT::i64, MVT::f32, 1 },
{ ISD::FP_TO_UINT, MVT::i64, MVT::f64, 1 },
{ ISD::FP_TO_UINT, MVT::v2i32, MVT::v2f32, 1 },
{ ISD::FP_TO_UINT, MVT::v4i32, MVT::v4f32, 1 },
{ ISD::FP_TO_UINT, MVT::v2i32, MVT::v2f64, 1 },
{ ISD::FP_TO_UINT, MVT::v4i32, MVT::v4f64, 1 },
{ ISD::FP_TO_UINT, MVT::v8i32, MVT::v8f32, 1 },
};
static const TypeConversionCostTblEntry AVX2ConversionTbl[] = {
{ ISD::SIGN_EXTEND, MVT::v4i64, MVT::v4i1, 3 },
{ ISD::ZERO_EXTEND, MVT::v4i64, MVT::v4i1, 3 },
{ ISD::SIGN_EXTEND, MVT::v8i32, MVT::v8i1, 3 },
{ ISD::ZERO_EXTEND, MVT::v8i32, MVT::v8i1, 3 },
{ ISD::SIGN_EXTEND, MVT::v4i64, MVT::v4i8, 1 },
{ ISD::ZERO_EXTEND, MVT::v4i64, MVT::v4i8, 1 },
{ ISD::SIGN_EXTEND, MVT::v8i32, MVT::v8i8, 1 },
{ ISD::ZERO_EXTEND, MVT::v8i32, MVT::v8i8, 1 },
{ ISD::SIGN_EXTEND, MVT::v16i16, MVT::v16i1, 1 },
{ ISD::ZERO_EXTEND, MVT::v16i16, MVT::v16i1, 1 },
{ ISD::SIGN_EXTEND, MVT::v16i16, MVT::v16i8, 1 },
{ ISD::ZERO_EXTEND, MVT::v16i16, MVT::v16i8, 1 },
{ ISD::SIGN_EXTEND, MVT::v4i64, MVT::v4i16, 1 },
{ ISD::ZERO_EXTEND, MVT::v4i64, MVT::v4i16, 1 },
{ ISD::SIGN_EXTEND, MVT::v8i32, MVT::v8i16, 1 },
{ ISD::ZERO_EXTEND, MVT::v8i32, MVT::v8i16, 1 },
{ ISD::SIGN_EXTEND, MVT::v4i64, MVT::v4i32, 1 },
{ ISD::ZERO_EXTEND, MVT::v4i64, MVT::v4i32, 1 },
{ ISD::ZERO_EXTEND, MVT::v16i32, MVT::v16i16, 3 },
{ ISD::SIGN_EXTEND, MVT::v16i32, MVT::v16i16, 3 },
{ ISD::TRUNCATE, MVT::v4i32, MVT::v4i64, 2 },
{ ISD::TRUNCATE, MVT::v8i1, MVT::v8i32, 2 },
{ ISD::TRUNCATE, MVT::v4i8, MVT::v4i64, 2 },
{ ISD::TRUNCATE, MVT::v4i16, MVT::v4i64, 2 },
{ ISD::TRUNCATE, MVT::v8i8, MVT::v8i32, 2 },
{ ISD::TRUNCATE, MVT::v8i16, MVT::v8i32, 2 },
{ ISD::FP_EXTEND, MVT::v8f64, MVT::v8f32, 3 },
{ ISD::FP_ROUND, MVT::v8f32, MVT::v8f64, 3 },
{ ISD::UINT_TO_FP, MVT::v8f32, MVT::v8i32, 8 },
};
static const TypeConversionCostTblEntry AVXConversionTbl[] = {
{ ISD::SIGN_EXTEND, MVT::v4i64, MVT::v4i1, 6 },
{ ISD::ZERO_EXTEND, MVT::v4i64, MVT::v4i1, 4 },
{ ISD::SIGN_EXTEND, MVT::v8i32, MVT::v8i1, 7 },
{ ISD::ZERO_EXTEND, MVT::v8i32, MVT::v8i1, 4 },
{ ISD::SIGN_EXTEND, MVT::v4i64, MVT::v4i8, 4 },
{ ISD::ZERO_EXTEND, MVT::v4i64, MVT::v4i8, 4 },
{ ISD::SIGN_EXTEND, MVT::v8i32, MVT::v8i8, 4 },
{ ISD::ZERO_EXTEND, MVT::v8i32, MVT::v8i8, 4 },
{ ISD::SIGN_EXTEND, MVT::v16i16, MVT::v16i1, 4 },
{ ISD::ZERO_EXTEND, MVT::v16i16, MVT::v16i1, 4 },
{ ISD::SIGN_EXTEND, MVT::v16i16, MVT::v16i8, 4 },
{ ISD::ZERO_EXTEND, MVT::v16i16, MVT::v16i8, 4 },
{ ISD::SIGN_EXTEND, MVT::v4i64, MVT::v4i16, 4 },
{ ISD::ZERO_EXTEND, MVT::v4i64, MVT::v4i16, 3 },
{ ISD::SIGN_EXTEND, MVT::v8i32, MVT::v8i16, 4 },
{ ISD::ZERO_EXTEND, MVT::v8i32, MVT::v8i16, 4 },
{ ISD::SIGN_EXTEND, MVT::v4i64, MVT::v4i32, 4 },
{ ISD::ZERO_EXTEND, MVT::v4i64, MVT::v4i32, 4 },
{ ISD::TRUNCATE, MVT::v4i1, MVT::v4i64, 4 },
{ ISD::TRUNCATE, MVT::v8i1, MVT::v8i32, 5 },
{ ISD::TRUNCATE, MVT::v16i1, MVT::v16i16, 4 },
{ ISD::TRUNCATE, MVT::v8i1, MVT::v8i64, 9 },
{ ISD::TRUNCATE, MVT::v16i1, MVT::v16i64, 11 },
{ ISD::TRUNCATE, MVT::v16i8, MVT::v16i16, 4 },
{ ISD::TRUNCATE, MVT::v8i8, MVT::v8i32, 4 },
{ ISD::TRUNCATE, MVT::v8i16, MVT::v8i32, 5 },
{ ISD::TRUNCATE, MVT::v4i8, MVT::v4i64, 4 },
{ ISD::TRUNCATE, MVT::v4i16, MVT::v4i64, 4 },
{ ISD::TRUNCATE, MVT::v4i32, MVT::v4i64, 2 },
{ ISD::TRUNCATE, MVT::v8i8, MVT::v8i64, 11 },
{ ISD::TRUNCATE, MVT::v8i16, MVT::v8i64, 9 },
{ ISD::TRUNCATE, MVT::v8i32, MVT::v8i64, 3 },
{ ISD::TRUNCATE, MVT::v16i8, MVT::v16i64, 11 },
{ ISD::SINT_TO_FP, MVT::v4f32, MVT::v4i1, 3 },
{ ISD::SINT_TO_FP, MVT::v4f64, MVT::v4i1, 3 },
{ ISD::SINT_TO_FP, MVT::v8f32, MVT::v8i1, 8 },
{ ISD::SINT_TO_FP, MVT::v4f32, MVT::v4i8, 3 },
{ ISD::SINT_TO_FP, MVT::v4f64, MVT::v4i8, 3 },
{ ISD::SINT_TO_FP, MVT::v8f32, MVT::v8i8, 8 },
{ ISD::SINT_TO_FP, MVT::v4f32, MVT::v4i16, 3 },
{ ISD::SINT_TO_FP, MVT::v4f64, MVT::v4i16, 3 },
{ ISD::SINT_TO_FP, MVT::v8f32, MVT::v8i16, 5 },
{ ISD::SINT_TO_FP, MVT::v4f32, MVT::v4i32, 1 },
{ ISD::SINT_TO_FP, MVT::v4f64, MVT::v4i32, 1 },
{ ISD::SINT_TO_FP, MVT::v8f32, MVT::v8i32, 1 },
{ ISD::UINT_TO_FP, MVT::v4f32, MVT::v4i1, 7 },
{ ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i1, 7 },
{ ISD::UINT_TO_FP, MVT::v8f32, MVT::v8i1, 6 },
{ ISD::UINT_TO_FP, MVT::v4f32, MVT::v4i8, 2 },
{ ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i8, 2 },
{ ISD::UINT_TO_FP, MVT::v8f32, MVT::v8i8, 5 },
{ ISD::UINT_TO_FP, MVT::v4f32, MVT::v4i16, 2 },
{ ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i16, 2 },
{ ISD::UINT_TO_FP, MVT::v8f32, MVT::v8i16, 5 },
{ ISD::UINT_TO_FP, MVT::v2f64, MVT::v2i32, 6 },
{ ISD::UINT_TO_FP, MVT::v4f32, MVT::v4i32, 6 },
{ ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i32, 6 },
{ ISD::UINT_TO_FP, MVT::v8f32, MVT::v8i32, 9 },
{ ISD::UINT_TO_FP, MVT::v2f64, MVT::v2i64, 5 },
{ ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i64, 6 },
// The generic code to compute the scalar overhead is currently broken.
// Workaround this limitation by estimating the scalarization overhead
// here. We have roughly 10 instructions per scalar element.
// Multiply that by the vector width.
// FIXME: remove that when PR19268 is fixed.
{ ISD::SINT_TO_FP, MVT::v4f64, MVT::v4i64, 13 },
{ ISD::SINT_TO_FP, MVT::v4f64, MVT::v4i64, 13 },
{ ISD::FP_TO_SINT, MVT::v8i8, MVT::v8f32, 4 },
{ ISD::FP_TO_SINT, MVT::v4i8, MVT::v4f64, 3 },
{ ISD::FP_TO_SINT, MVT::v4i16, MVT::v4f64, 2 },
{ ISD::FP_TO_SINT, MVT::v8i16, MVT::v8f32, 3 },
{ ISD::FP_TO_UINT, MVT::v4i8, MVT::v4f64, 3 },
{ ISD::FP_TO_UINT, MVT::v4i16, MVT::v4f64, 2 },
{ ISD::FP_TO_UINT, MVT::v8i8, MVT::v8f32, 4 },
{ ISD::FP_TO_UINT, MVT::v8i16, MVT::v8f32, 3 },
// This node is expanded into scalarized operations but BasicTTI is overly
// optimistic estimating its cost. It computes 3 per element (one
// vector-extract, one scalar conversion and one vector-insert). The
// problem is that the inserts form a read-modify-write chain so latency
// should be factored in too. Inflating the cost per element by 1.
{ ISD::FP_TO_UINT, MVT::v8i32, MVT::v8f32, 8*4 },
{ ISD::FP_TO_UINT, MVT::v4i32, MVT::v4f64, 4*4 },
{ ISD::FP_EXTEND, MVT::v4f64, MVT::v4f32, 1 },
{ ISD::FP_ROUND, MVT::v4f32, MVT::v4f64, 1 },
};
static const TypeConversionCostTblEntry SSE41ConversionTbl[] = {
{ ISD::ZERO_EXTEND, MVT::v4i64, MVT::v4i8, 2 },
{ ISD::SIGN_EXTEND, MVT::v4i64, MVT::v4i8, 2 },
{ ISD::ZERO_EXTEND, MVT::v4i64, MVT::v4i16, 2 },
{ ISD::SIGN_EXTEND, MVT::v4i64, MVT::v4i16, 2 },
{ ISD::ZERO_EXTEND, MVT::v4i64, MVT::v4i32, 2 },
{ ISD::SIGN_EXTEND, MVT::v4i64, MVT::v4i32, 2 },
{ ISD::ZERO_EXTEND, MVT::v4i16, MVT::v4i8, 1 },
{ ISD::SIGN_EXTEND, MVT::v4i16, MVT::v4i8, 2 },
{ ISD::ZERO_EXTEND, MVT::v4i32, MVT::v4i8, 1 },
{ ISD::SIGN_EXTEND, MVT::v4i32, MVT::v4i8, 1 },
{ ISD::ZERO_EXTEND, MVT::v8i16, MVT::v8i8, 1 },
{ ISD::SIGN_EXTEND, MVT::v8i16, MVT::v8i8, 1 },
{ ISD::ZERO_EXTEND, MVT::v8i32, MVT::v8i8, 2 },
{ ISD::SIGN_EXTEND, MVT::v8i32, MVT::v8i8, 2 },
{ ISD::ZERO_EXTEND, MVT::v16i16, MVT::v16i8, 2 },
{ ISD::SIGN_EXTEND, MVT::v16i16, MVT::v16i8, 2 },
{ ISD::ZERO_EXTEND, MVT::v16i32, MVT::v16i8, 4 },
{ ISD::SIGN_EXTEND, MVT::v16i32, MVT::v16i8, 4 },
{ ISD::ZERO_EXTEND, MVT::v4i32, MVT::v4i16, 1 },
{ ISD::SIGN_EXTEND, MVT::v4i32, MVT::v4i16, 1 },
{ ISD::ZERO_EXTEND, MVT::v8i32, MVT::v8i16, 2 },
{ ISD::SIGN_EXTEND, MVT::v8i32, MVT::v8i16, 2 },
{ ISD::ZERO_EXTEND, MVT::v16i32, MVT::v16i16, 4 },
{ ISD::SIGN_EXTEND, MVT::v16i32, MVT::v16i16, 4 },
// These truncates end up widening elements.
{ ISD::TRUNCATE, MVT::v2i1, MVT::v2i8, 1 }, // PMOVXZBQ
{ ISD::TRUNCATE, MVT::v2i1, MVT::v2i16, 1 }, // PMOVXZWQ
{ ISD::TRUNCATE, MVT::v4i1, MVT::v4i8, 1 }, // PMOVXZBD
{ ISD::TRUNCATE, MVT::v2i8, MVT::v2i16, 1 },
{ ISD::TRUNCATE, MVT::v4i8, MVT::v4i16, 1 },
{ ISD::TRUNCATE, MVT::v8i8, MVT::v8i16, 1 },
{ ISD::TRUNCATE, MVT::v4i8, MVT::v4i32, 1 },
{ ISD::TRUNCATE, MVT::v4i16, MVT::v4i32, 1 },
{ ISD::TRUNCATE, MVT::v8i8, MVT::v8i32, 3 },
{ ISD::TRUNCATE, MVT::v8i16, MVT::v8i32, 3 },
{ ISD::TRUNCATE, MVT::v16i16, MVT::v16i32, 6 },
{ ISD::TRUNCATE, MVT::v2i8, MVT::v2i64, 1 }, // PSHUFB
{ ISD::UINT_TO_FP, MVT::f32, MVT::i64, 4 },
{ ISD::UINT_TO_FP, MVT::f64, MVT::i64, 4 },
{ ISD::FP_TO_SINT, MVT::v2i8, MVT::v2f32, 3 },
{ ISD::FP_TO_SINT, MVT::v2i8, MVT::v2f64, 3 },
{ ISD::FP_TO_UINT, MVT::v2i8, MVT::v2f32, 3 },
{ ISD::FP_TO_UINT, MVT::v2i8, MVT::v2f64, 3 },
{ ISD::FP_TO_UINT, MVT::v4i16, MVT::v4f32, 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::v16i8, 8 },
{ ISD::SINT_TO_FP, MVT::v2f64, MVT::v16i8, 16*10 },
{ ISD::SINT_TO_FP, MVT::v4f32, MVT::v8i16, 15 },
{ ISD::SINT_TO_FP, MVT::v2f64, MVT::v8i16, 8*10 },
{ ISD::SINT_TO_FP, MVT::v4f32, MVT::v4i32, 5 },
{ ISD::SINT_TO_FP, MVT::v2f64, MVT::v4i32, 2*10 },
{ ISD::SINT_TO_FP, MVT::v2f64, MVT::v2i32, 2*10 },
{ ISD::SINT_TO_FP, MVT::v4f32, MVT::v2i64, 15 },
{ ISD::SINT_TO_FP, MVT::v2f64, MVT::v2i64, 2*10 },
{ ISD::UINT_TO_FP, MVT::v2f64, MVT::v16i8, 16*10 },
{ ISD::UINT_TO_FP, MVT::v4f32, MVT::v16i8, 8 },
{ ISD::UINT_TO_FP, MVT::v4f32, MVT::v8i16, 15 },
{ ISD::UINT_TO_FP, MVT::v2f64, MVT::v8i16, 8*10 },
{ ISD::UINT_TO_FP, MVT::v2f64, MVT::v4i32, 4*10 },
{ ISD::UINT_TO_FP, MVT::v4f32, MVT::v4i32, 8 },
{ ISD::UINT_TO_FP, MVT::v2f64, MVT::v2i64, 6 },
{ ISD::UINT_TO_FP, MVT::v4f32, MVT::v2i64, 15 },
{ ISD::FP_TO_SINT, MVT::v2i8, MVT::v2f32, 4 },
{ ISD::FP_TO_SINT, MVT::v2i16, MVT::v2f32, 2 },
{ ISD::FP_TO_SINT, MVT::v4i8, MVT::v4f32, 3 },
{ ISD::FP_TO_SINT, MVT::v4i16, MVT::v4f32, 2 },
{ ISD::FP_TO_SINT, MVT::v2i16, MVT::v2f64, 2 },
{ ISD::FP_TO_SINT, MVT::v2i8, MVT::v2f64, 4 },
{ ISD::FP_TO_SINT, MVT::v2i32, MVT::v2f64, 1 },
{ ISD::UINT_TO_FP, MVT::f32, MVT::i64, 6 },
{ ISD::UINT_TO_FP, MVT::f64, MVT::i64, 6 },
{ ISD::FP_TO_UINT, MVT::i64, MVT::f32, 4 },
{ ISD::FP_TO_UINT, MVT::i64, MVT::f64, 4 },
{ ISD::FP_TO_UINT, MVT::v2i8, MVT::v2f32, 4 },
{ ISD::FP_TO_UINT, MVT::v2i8, MVT::v2f64, 4 },
{ ISD::FP_TO_UINT, MVT::v4i8, MVT::v4f32, 3 },
{ ISD::FP_TO_UINT, MVT::v2i16, MVT::v2f32, 2 },
{ ISD::FP_TO_UINT, MVT::v2i16, MVT::v2f64, 2 },
{ ISD::FP_TO_UINT, MVT::v4i16, MVT::v4f32, 4 },
{ ISD::ZERO_EXTEND, MVT::v4i16, MVT::v4i8, 1 },
{ ISD::SIGN_EXTEND, MVT::v4i16, MVT::v4i8, 6 },
{ ISD::ZERO_EXTEND, MVT::v4i32, MVT::v4i8, 2 },
{ ISD::SIGN_EXTEND, MVT::v4i32, MVT::v4i8, 3 },
{ ISD::ZERO_EXTEND, MVT::v4i64, MVT::v4i8, 4 },
{ ISD::SIGN_EXTEND, MVT::v4i64, MVT::v4i8, 8 },
{ ISD::ZERO_EXTEND, MVT::v8i16, MVT::v8i8, 1 },
{ ISD::SIGN_EXTEND, MVT::v8i16, MVT::v8i8, 2 },
{ ISD::ZERO_EXTEND, MVT::v8i32, MVT::v8i8, 6 },
{ ISD::SIGN_EXTEND, MVT::v8i32, MVT::v8i8, 6 },
{ ISD::ZERO_EXTEND, MVT::v16i16, MVT::v16i8, 3 },
{ ISD::SIGN_EXTEND, MVT::v16i16, MVT::v16i8, 4 },
{ ISD::ZERO_EXTEND, MVT::v16i32, MVT::v16i8, 9 },
{ ISD::SIGN_EXTEND, MVT::v16i32, MVT::v16i8, 12 },
{ ISD::ZERO_EXTEND, MVT::v4i32, MVT::v4i16, 1 },
{ ISD::SIGN_EXTEND, MVT::v4i32, MVT::v4i16, 2 },
{ ISD::ZERO_EXTEND, MVT::v4i64, MVT::v4i16, 3 },
{ ISD::SIGN_EXTEND, MVT::v4i64, MVT::v4i16, 10 },
{ ISD::ZERO_EXTEND, MVT::v8i32, MVT::v8i16, 3 },
{ ISD::SIGN_EXTEND, MVT::v8i32, MVT::v8i16, 4 },
{ ISD::ZERO_EXTEND, MVT::v16i32, MVT::v16i16, 6 },
{ ISD::SIGN_EXTEND, MVT::v16i32, MVT::v16i16, 8 },
{ ISD::ZERO_EXTEND, MVT::v4i64, MVT::v4i32, 3 },
{ ISD::SIGN_EXTEND, MVT::v4i64, MVT::v4i32, 5 },
// These truncates are really widening elements.
{ ISD::TRUNCATE, MVT::v2i1, MVT::v2i32, 1 }, // PSHUFD
{ ISD::TRUNCATE, MVT::v2i1, MVT::v2i16, 2 }, // PUNPCKLWD+DQ
{ ISD::TRUNCATE, MVT::v2i1, MVT::v2i8, 3 }, // PUNPCKLBW+WD+PSHUFD
{ ISD::TRUNCATE, MVT::v4i1, MVT::v4i16, 1 }, // PUNPCKLWD
{ ISD::TRUNCATE, MVT::v4i1, MVT::v4i8, 2 }, // PUNPCKLBW+WD
{ ISD::TRUNCATE, MVT::v8i1, MVT::v8i8, 1 }, // PUNPCKLBW
{ ISD::TRUNCATE, MVT::v2i8, MVT::v2i16, 2 }, // PAND+PACKUSWB
{ ISD::TRUNCATE, MVT::v4i8, MVT::v4i16, 2 }, // PAND+PACKUSWB
{ ISD::TRUNCATE, MVT::v8i8, MVT::v8i16, 2 }, // PAND+PACKUSWB
{ ISD::TRUNCATE, MVT::v16i8, MVT::v16i16, 3 },
{ ISD::TRUNCATE, MVT::v2i8, MVT::v2i32, 3 }, // PAND+2*PACKUSWB
{ ISD::TRUNCATE, MVT::v2i16, MVT::v2i32, 1 },
{ ISD::TRUNCATE, MVT::v4i8, MVT::v4i32, 3 },
{ ISD::TRUNCATE, MVT::v4i16, MVT::v4i32, 3 },
{ ISD::TRUNCATE, MVT::v8i8, MVT::v8i32, 4 },
{ ISD::TRUNCATE, MVT::v16i8, MVT::v16i32, 7 },
{ ISD::TRUNCATE, MVT::v8i16, MVT::v8i32, 5 },
{ ISD::TRUNCATE, MVT::v16i16, MVT::v16i32, 10 },
{ ISD::TRUNCATE, MVT::v2i8, MVT::v2i64, 4 }, // PAND+3*PACKUSWB
{ ISD::TRUNCATE, MVT::v2i16, MVT::v2i64, 2 }, // PSHUFD+PSHUFLW
{ ISD::TRUNCATE, MVT::v2i32, MVT::v2i64, 1 }, // PSHUFD
};
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(SSE2ConversionTbl, ISD,
LTDest.second, LTSrc.second))
return AdjustCost(LTSrc.first * Entry->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 AdjustCost(BaseT::getCastInstrCost(Opcode, Dst, Src, CostKind));
MVT SimpleSrcTy = SrcTy.getSimpleVT();
MVT SimpleDstTy = DstTy.getSimpleVT();
if (ST->useAVX512Regs()) {
if (ST->hasBWI())
if (const auto *Entry = ConvertCostTableLookup(AVX512BWConversionTbl, ISD,
SimpleDstTy, SimpleSrcTy))
return AdjustCost(Entry->Cost);
if (ST->hasDQI())
if (const auto *Entry = ConvertCostTableLookup(AVX512DQConversionTbl, ISD,
SimpleDstTy, SimpleSrcTy))
return AdjustCost(Entry->Cost);
if (ST->hasAVX512())
if (const auto *Entry = ConvertCostTableLookup(AVX512FConversionTbl, ISD,
SimpleDstTy, SimpleSrcTy))
return AdjustCost(Entry->Cost);
}
if (ST->hasBWI())
if (const auto *Entry = ConvertCostTableLookup(AVX512BWVLConversionTbl, ISD,
SimpleDstTy, SimpleSrcTy))
return AdjustCost(Entry->Cost);
if (ST->hasDQI())
if (const auto *Entry = ConvertCostTableLookup(AVX512DQVLConversionTbl, ISD,
SimpleDstTy, SimpleSrcTy))
return AdjustCost(Entry->Cost);
if (ST->hasAVX512())
if (const auto *Entry = ConvertCostTableLookup(AVX512VLConversionTbl, ISD,
SimpleDstTy, SimpleSrcTy))
return AdjustCost(Entry->Cost);
if (ST->hasAVX2()) {
if (const auto *Entry = ConvertCostTableLookup(AVX2ConversionTbl, ISD,
SimpleDstTy, SimpleSrcTy))
return AdjustCost(Entry->Cost);
}
if (ST->hasAVX()) {
if (const auto *Entry = ConvertCostTableLookup(AVXConversionTbl, ISD,
SimpleDstTy, SimpleSrcTy))
return AdjustCost(Entry->Cost);
}
if (ST->hasSSE41()) {
if (const auto *Entry = ConvertCostTableLookup(SSE41ConversionTbl, ISD,
SimpleDstTy, SimpleSrcTy))
return AdjustCost(Entry->Cost);
}
if (ST->hasSSE2()) {
if (const auto *Entry = ConvertCostTableLookup(SSE2ConversionTbl, ISD,
SimpleDstTy, SimpleSrcTy))
return AdjustCost(Entry->Cost);
}
return AdjustCost(BaseT::getCastInstrCost(Opcode, Dst, Src, CostKind, I));
}
int X86TTIImpl::getCmpSelInstrCost(unsigned Opcode, Type *ValTy, Type *CondTy,
TTI::TargetCostKind CostKind,
const Instruction *I) {
// TODO: Handle other cost kinds.
if (CostKind != TTI::TCK_RecipThroughput)
return BaseT::getCmpSelInstrCost(Opcode, ValTy, CondTy, CostKind, I);
// Legalize the type.
std::pair<int, MVT> LT = TLI->getTypeLegalizationCost(DL, ValTy);
MVT MTy = LT.second;
int ISD = TLI->InstructionOpcodeToISD(Opcode);
assert(ISD && "Invalid opcode");
unsigned ExtraCost = 0;
if (I && (Opcode == Instruction::ICmp || Opcode == Instruction::FCmp)) {
// Some vector comparison predicates cost extra instructions.
if (MTy.isVector() &&
!((ST->hasXOP() && (!ST->hasAVX2() || MTy.is128BitVector())) ||
(ST->hasAVX512() && 32 <= MTy.getScalarSizeInBits()) ||
ST->hasBWI())) {
switch (cast<CmpInst>(I)->getPredicate()) {
case CmpInst::Predicate::ICMP_NE:
// xor(cmpeq(x,y),-1)
ExtraCost = 1;
break;
case CmpInst::Predicate::ICMP_SGE:
case CmpInst::Predicate::ICMP_SLE:
// xor(cmpgt(x,y),-1)
ExtraCost = 1;
break;
case CmpInst::Predicate::ICMP_ULT:
case CmpInst::Predicate::ICMP_UGT:
// cmpgt(xor(x,signbit),xor(y,signbit))
// xor(cmpeq(pmaxu(x,y),x),-1)
ExtraCost = 2;
break;
case CmpInst::Predicate::ICMP_ULE:
case CmpInst::Predicate::ICMP_UGE:
if ((ST->hasSSE41() && MTy.getScalarSizeInBits() == 32) ||
(ST->hasSSE2() && MTy.getScalarSizeInBits() < 32)) {
// cmpeq(psubus(x,y),0)
// cmpeq(pminu(x,y),x)
ExtraCost = 1;
} else {
// xor(cmpgt(xor(x,signbit),xor(y,signbit)),-1)
ExtraCost = 3;
}
break;
default:
break;
}
}
}
static const CostTblEntry SLMCostTbl[] = {
// slm pcmpeq/pcmpgt throughput is 2
{ ISD::SETCC, MVT::v2i64, 2 },
};
static const CostTblEntry AVX512BWCostTbl[] = {
{ ISD::SETCC, MVT::v32i16, 1 },
{ ISD::SETCC, MVT::v64i8, 1 },
{ ISD::SELECT, MVT::v32i16, 1 },
{ ISD::SELECT, MVT::v64i8, 1 },
};
static const CostTblEntry AVX512CostTbl[] = {
{ ISD::SETCC, MVT::v8i64, 1 },
{ ISD::SETCC, MVT::v16i32, 1 },
{ ISD::SETCC, MVT::v8f64, 1 },
{ ISD::SETCC, MVT::v16f32, 1 },
{ ISD::SELECT, MVT::v8i64, 1 },
{ ISD::SELECT, MVT::v16i32, 1 },
{ ISD::SELECT, MVT::v8f64, 1 },
{ ISD::SELECT, MVT::v16f32, 1 },
{ ISD::SETCC, MVT::v32i16, 2 }, // FIXME: should probably be 4
{ ISD::SETCC, MVT::v64i8, 2 }, // FIXME: should probably be 4
{ ISD::SELECT, MVT::v32i16, 2 }, // FIXME: should be 3
{ ISD::SELECT, MVT::v64i8, 2 }, // FIXME: should be 3
};
static const CostTblEntry AVX2CostTbl[] = {
{ ISD::SETCC, MVT::v4i64, 1 },
{ ISD::SETCC, MVT::v8i32, 1 },
{ ISD::SETCC, MVT::v16i16, 1 },
{ ISD::SETCC, MVT::v32i8, 1 },
{ ISD::SELECT, MVT::v4i64, 1 }, // pblendvb
{ ISD::SELECT, MVT::v8i32, 1 }, // pblendvb
{ ISD::SELECT, MVT::v16i16, 1 }, // pblendvb
{ ISD::SELECT, MVT::v32i8, 1 }, // pblendvb
};
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::v4i64, 4 },
{ ISD::SETCC, MVT::v8i32, 4 },
{ ISD::SETCC, MVT::v16i16, 4 },
{ ISD::SETCC, MVT::v32i8, 4 },
{ ISD::SELECT, MVT::v4f64, 1 }, // vblendvpd
{ ISD::SELECT, MVT::v8f32, 1 }, // vblendvps
{ ISD::SELECT, MVT::v4i64, 1 }, // vblendvpd
{ ISD::SELECT, MVT::v8i32, 1 }, // vblendvps
{ ISD::SELECT, MVT::v16i16, 3 }, // vandps + vandnps + vorps
{ ISD::SELECT, MVT::v32i8, 3 }, // vandps + vandnps + vorps
};
static const CostTblEntry SSE42CostTbl[] = {
{ ISD::SETCC, MVT::v2f64, 1 },
{ ISD::SETCC, MVT::v4f32, 1 },
{ ISD::SETCC, MVT::v2i64, 1 },
};
static const CostTblEntry SSE41CostTbl[] = {
{ ISD::SELECT, MVT::v2f64, 1 }, // blendvpd
{ ISD::SELECT, MVT::v4f32, 1 }, // blendvps
{ ISD::SELECT, MVT::v2i64, 1 }, // pblendvb
{ ISD::SELECT, MVT::v4i32, 1 }, // pblendvb
{ ISD::SELECT, MVT::v8i16, 1 }, // pblendvb
{ ISD::SELECT, MVT::v16i8, 1 }, // pblendvb
};
static const CostTblEntry SSE2CostTbl[] = {
{ ISD::SETCC, MVT::v2f64, 2 },
{ ISD::SETCC, MVT::f64, 1 },
{ ISD::SETCC, MVT::v2i64, 8 },
{ ISD::SETCC, MVT::v4i32, 1 },
{ ISD::SETCC, MVT::v8i16, 1 },
{ ISD::SETCC, MVT::v16i8, 1 },
{ ISD::SELECT, MVT::v2f64, 3 }, // andpd + andnpd + orpd
{ ISD::SELECT, MVT::v2i64, 3 }, // pand + pandn + por
{ ISD::SELECT, MVT::v4i32, 3 }, // pand + pandn + por
{ ISD::SELECT, MVT::v8i16, 3 }, // pand + pandn + por
{ ISD::SELECT, MVT::v16i8, 3 }, // pand + pandn + por
};
static const CostTblEntry SSE1CostTbl[] = {
{ ISD::SETCC, MVT::v4f32, 2 },
{ ISD::SETCC, MVT::f32, 1 },
{ ISD::SELECT, MVT::v4f32, 3 }, // andps + andnps + orps
};
if (ST->isSLM())
if (const auto *Entry = CostTableLookup(SLMCostTbl, ISD, MTy))
return LT.first * (ExtraCost + Entry->Cost);
if (ST->hasBWI())
if (const auto *Entry = CostTableLookup(AVX512BWCostTbl, ISD, MTy))
return LT.first * (ExtraCost + Entry->Cost);
if (ST->hasAVX512())
if (const auto *Entry = CostTableLookup(AVX512CostTbl, ISD, MTy))
return LT.first * (ExtraCost + Entry->Cost);
if (ST->hasAVX2())
if (const auto *Entry = CostTableLookup(AVX2CostTbl, ISD, MTy))
return LT.first * (ExtraCost + Entry->Cost);
if (ST->hasAVX())
if (const auto *Entry = CostTableLookup(AVX1CostTbl, ISD, MTy))
return LT.first * (ExtraCost + Entry->Cost);
if (ST->hasSSE42())
if (const auto *Entry = CostTableLookup(SSE42CostTbl, ISD, MTy))
return LT.first * (ExtraCost + Entry->Cost);
if (ST->hasSSE41())
if (const auto *Entry = CostTableLookup(SSE41CostTbl, ISD, MTy))
return LT.first * (ExtraCost + Entry->Cost);
if (ST->hasSSE2())
if (const auto *Entry = CostTableLookup(SSE2CostTbl, ISD, MTy))
return LT.first * (ExtraCost + Entry->Cost);
if (ST->hasSSE1())
if (const auto *Entry = CostTableLookup(SSE1CostTbl, ISD, MTy))
return LT.first * (ExtraCost + Entry->Cost);
return BaseT::getCmpSelInstrCost(Opcode, ValTy, CondTy, CostKind, I);
}
unsigned X86TTIImpl::getAtomicMemIntrinsicMaxElementSize() const { return 16; }
int X86TTIImpl::getTypeBasedIntrinsicInstrCost(
const IntrinsicCostAttributes &ICA, TTI::TargetCostKind CostKind) {
// Costs should match the codegen from:
// BITREVERSE: llvm\test\CodeGen\X86\vector-bitreverse.ll
// BSWAP: llvm\test\CodeGen\X86\bswap-vector.ll
// CTLZ: llvm\test\CodeGen\X86\vector-lzcnt-*.ll
// CTPOP: llvm\test\CodeGen\X86\vector-popcnt-*.ll
// CTTZ: llvm\test\CodeGen\X86\vector-tzcnt-*.ll
static const CostTblEntry AVX512CDCostTbl[] = {
{ ISD::CTLZ, MVT::v8i64, 1 },
{ ISD::CTLZ, MVT::v16i32, 1 },
{ ISD::CTLZ, MVT::v32i16, 8 },
{ ISD::CTLZ, MVT::v64i8, 20 },
{ ISD::CTLZ, MVT::v4i64, 1 },
{ ISD::CTLZ, MVT::v8i32, 1 },
{ ISD::CTLZ, MVT::v16i16, 4 },
{ ISD::CTLZ, MVT::v32i8, 10 },
{ ISD::CTLZ, MVT::v2i64, 1 },
{ ISD::CTLZ, MVT::v4i32, 1 },
{ ISD::CTLZ, MVT::v8i16, 4 },
{ ISD::CTLZ, MVT::v16i8, 4 },
};
static const CostTblEntry AVX512BWCostTbl[] = {
{ ISD::BITREVERSE, MVT::v8i64, 5 },
{ ISD::BITREVERSE, MVT::v16i32, 5 },
{ ISD::BITREVERSE, MVT::v32i16, 5 },
{ ISD::BITREVERSE, MVT::v64i8, 5 },
{ ISD::CTLZ, MVT::v8i64, 23 },
{ ISD::CTLZ, MVT::v16i32, 22 },
{ ISD::CTLZ, MVT::v32i16, 18 },
{ ISD::CTLZ, MVT::v64i8, 17 },
{ ISD::CTPOP, MVT::v8i64, 7 },
{ ISD::CTPOP, MVT::v16i32, 11 },
{ ISD::CTPOP, MVT::v32i16, 9 },
{ ISD::CTPOP, MVT::v64i8, 6 },
{ ISD::CTTZ, MVT::v8i64, 10 },
{ ISD::CTTZ, MVT::v16i32, 14 },
{ ISD::CTTZ, MVT::v32i16, 12 },
{ ISD::CTTZ, MVT::v64i8, 9 },
{ ISD::SADDSAT, MVT::v32i16, 1 },
{ ISD::SADDSAT, MVT::v64i8, 1 },
{ ISD::SSUBSAT, MVT::v32i16, 1 },
{ ISD::SSUBSAT, MVT::v64i8, 1 },
{ ISD::UADDSAT, MVT::v32i16, 1 },
{ ISD::UADDSAT, MVT::v64i8, 1 },
{ ISD::USUBSAT, MVT::v32i16, 1 },
{ ISD::USUBSAT, MVT::v64i8, 1 },
};
static const CostTblEntry AVX512CostTbl[] = {
{ ISD::BITREVERSE, MVT::v8i64, 36 },
{ ISD::BITREVERSE, MVT::v16i32, 24 },
{ ISD::BITREVERSE, MVT::v32i16, 10 },
{ ISD::BITREVERSE, MVT::v64i8, 10 },
{ ISD::CTLZ, MVT::v8i64, 29 },
{ ISD::CTLZ, MVT::v16i32, 35 },
{ ISD::CTLZ, MVT::v32i16, 28 },
{ ISD::CTLZ, MVT::v64i8, 18 },
{ ISD::CTPOP, MVT::v8i64, 16 },
{ ISD::CTPOP, MVT::v16i32, 24 },
{ ISD::CTPOP, MVT::v32i16, 18 },
{ ISD::CTPOP, MVT::v64i8, 12 },
{ ISD::CTTZ, MVT::v8i64, 20 },
{ ISD::CTTZ, MVT::v16i32, 28 },
{ ISD::CTTZ, MVT::v32i16, 24 },
{ ISD::CTTZ, MVT::v64i8, 18 },
{ ISD::USUBSAT, MVT::v16i32, 2 }, // pmaxud + psubd
{ ISD::USUBSAT, MVT::v2i64, 2 }, // pmaxuq + psubq
{ ISD::USUBSAT, MVT::v4i64, 2 }, // pmaxuq + psubq
{ ISD::USUBSAT, MVT::v8i64, 2 }, // pmaxuq + psubq
{ ISD::UADDSAT, MVT::v16i32, 3 }, // not + pminud + paddd
{ ISD::UADDSAT, MVT::v2i64, 3 }, // not + pminuq + paddq
{ ISD::UADDSAT, MVT::v4i64, 3 }, // not + pminuq + paddq
{ ISD::UADDSAT, MVT::v8i64, 3 }, // not + pminuq + paddq
{ ISD::SADDSAT, MVT::v32i16, 2 }, // FIXME: include split
{ ISD::SADDSAT, MVT::v64i8, 2 }, // FIXME: include split
{ ISD::SSUBSAT, MVT::v32i16, 2 }, // FIXME: include split
{ ISD::SSUBSAT, MVT::v64i8, 2 }, // FIXME: include split
{ ISD::UADDSAT, MVT::v32i16, 2 }, // FIXME: include split
{ ISD::UADDSAT, MVT::v64i8, 2 }, // FIXME: include split
{ ISD::USUBSAT, MVT::v32i16, 2 }, // FIXME: include split
{ ISD::USUBSAT, MVT::v64i8, 2 }, // FIXME: include split
{ ISD::FMAXNUM, MVT::f32, 2 },
{ ISD::FMAXNUM, MVT::v4f32, 2 },
{ ISD::FMAXNUM, MVT::v8f32, 2 },
{ ISD::FMAXNUM, MVT::v16f32, 2 },
{ ISD::FMAXNUM, MVT::f64, 2 },
{ ISD::FMAXNUM, MVT::v2f64, 2 },
{ ISD::FMAXNUM, MVT::v4f64, 2 },
{ ISD::FMAXNUM, MVT::v8f64, 2 },
};
static const CostTblEntry XOPCostTbl[] = {
{ ISD::BITREVERSE, MVT::v4i64, 4 },
{ ISD::BITREVERSE, MVT::v8i32, 4 },
{ ISD::BITREVERSE, MVT::v16i16, 4 },
{ ISD::BITREVERSE, MVT::v32i8, 4 },
{ ISD::BITREVERSE, MVT::v2i64, 1 },
{ ISD::BITREVERSE, MVT::v4i32, 1 },
{ ISD::BITREVERSE, MVT::v8i16, 1 },
{ ISD::BITREVERSE, MVT::v16i8, 1 },
{ ISD::BITREVERSE, MVT::i64, 3 },
{ ISD::BITREVERSE, MVT::i32, 3 },
{ ISD::BITREVERSE, MVT::i16, 3 },
{ ISD::BITREVERSE, MVT::i8, 3 }
};
static const CostTblEntry AVX2CostTbl[] = {
{ ISD::BITREVERSE, MVT::v4i64, 5 },
{ ISD::BITREVERSE, MVT::v8i32, 5 },
{ ISD::BITREVERSE, MVT::v16i16, 5 },
{ ISD::BITREVERSE, MVT::v32i8, 5 },
{ ISD::BSWAP, MVT::v4i64, 1 },
{ ISD::BSWAP, MVT::v8i32, 1 },
{ ISD::BSWAP, MVT::v16i16, 1 },
{ ISD::CTLZ, MVT::v4i64, 23 },
{ ISD::CTLZ, MVT::v8i32, 18 },
{ ISD::CTLZ, MVT::v16i16, 14 },
{ ISD::CTLZ, MVT::v32i8, 9 },
{ ISD::CTPOP, MVT::v4i64, 7 },
{ ISD::CTPOP, MVT::v8i32, 11 },
{ ISD::CTPOP, MVT::v16i16, 9 },
{ ISD::CTPOP, MVT::v32i8, 6 },
{ ISD::CTTZ, MVT::v4i64, 10 },
{ ISD::CTTZ, MVT::v8i32, 14 },
{ ISD::CTTZ, MVT::v16i16, 12 },
{ ISD::CTTZ, MVT::v32i8, 9 },
{ ISD::SADDSAT, MVT::v16i16, 1 },
{ ISD::SADDSAT, MVT::v32i8, 1 },
{ ISD::SSUBSAT, MVT::v16i16, 1 },
{ ISD::SSUBSAT, MVT::v32i8, 1 },
{ ISD::UADDSAT, MVT::v16i16, 1 },
{ ISD::UADDSAT, MVT::v32i8, 1 },
{ ISD::UADDSAT, MVT::v8i32, 3 }, // not + pminud + paddd
{ ISD::USUBSAT, MVT::v16i16, 1 },
{ ISD::USUBSAT, MVT::v32i8, 1 },
{ ISD::USUBSAT, MVT::v8i32, 2 }, // pmaxud + psubd
{ ISD::FSQRT, MVT::f32, 7 }, // Haswell from http://www.agner.org/
{ ISD::FSQRT, MVT::v4f32, 7 }, // Haswell from http://www.agner.org/
{ ISD::FSQRT, MVT::v8f32, 14 }, // Haswell from http://www.agner.org/
{ ISD::FSQRT, MVT::f64, 14 }, // Haswell from http://www.agner.org/
{ ISD::FSQRT, MVT::v2f64, 14 }, // Haswell from http://www.agner.org/
{ ISD::FSQRT, MVT::v4f64, 28 }, // Haswell from http://www.agner.org/
};
static const CostTblEntry AVX1CostTbl[] = {
{ ISD::BITREVERSE, MVT::v4i64, 12 }, // 2 x 128-bit Op + extract/insert
{ ISD::BITREVERSE, MVT::v8i32, 12 }, // 2 x 128-bit Op + extract/insert
{ ISD::BITREVERSE, MVT::v16i16, 12 }, // 2 x 128-bit Op + extract/insert
{ ISD::BITREVERSE, MVT::v32i8, 12 }, // 2 x 128-bit Op + extract/insert
{ ISD::BSWAP, MVT::v4i64, 4 },
{ ISD::BSWAP, MVT::v8i32, 4 },
{ ISD::BSWAP, MVT::v16i16, 4 },
{ ISD::CTLZ, MVT::v4i64, 48 }, // 2 x 128-bit Op + extract/insert
{ ISD::CTLZ, MVT::v8i32, 38 }, // 2 x 128-bit Op + extract/insert
{ ISD::CTLZ, MVT::v16i16, 30 }, // 2 x 128-bit Op + extract/insert
{ ISD::CTLZ, MVT::v32i8, 20 }, // 2 x 128-bit Op + extract/insert
{ ISD::CTPOP, MVT::v4i64, 16 }, // 2 x 128-bit Op + extract/insert
{ ISD::CTPOP, MVT::v8i32, 24 }, // 2 x 128-bit Op + extract/insert
{ ISD::CTPOP, MVT::v16i16, 20 }, // 2 x 128-bit Op + extract/insert
{ ISD::CTPOP, MVT::v32i8, 14 }, // 2 x 128-bit Op + extract/insert
{ ISD::CTTZ, MVT::v4i64, 22 }, // 2 x 128-bit Op + extract/insert
{ ISD::CTTZ, MVT::v8i32, 30 }, // 2 x 128-bit Op + extract/insert
{ ISD::CTTZ, MVT::v16i16, 26 }, // 2 x 128-bit Op + extract/insert
{ ISD::CTTZ, MVT::v32i8, 20 }, // 2 x 128-bit Op + extract/insert
{ ISD::SADDSAT, MVT::v16i16, 4 }, // 2 x 128-bit Op + extract/insert
{ ISD::SADDSAT, MVT::v32i8, 4 }, // 2 x 128-bit Op + extract/insert
{ ISD::SSUBSAT, MVT::v16i16, 4 }, // 2 x 128-bit Op + extract/insert
{ ISD::SSUBSAT, MVT::v32i8, 4 }, // 2 x 128-bit Op + extract/insert
{ ISD::UADDSAT, MVT::v16i16, 4 }, // 2 x 128-bit Op + extract/insert
{ ISD::UADDSAT, MVT::v32i8, 4 }, // 2 x 128-bit Op + extract/insert
{ ISD::UADDSAT, MVT::v8i32, 8 }, // 2 x 128-bit Op + extract/insert
{ ISD::USUBSAT, MVT::v16i16, 4 }, // 2 x 128-bit Op + extract/insert
{ ISD::USUBSAT, MVT::v32i8, 4 }, // 2 x 128-bit Op + extract/insert
{ ISD::USUBSAT, MVT::v8i32, 6 }, // 2 x 128-bit Op + extract/insert
{ ISD::FMAXNUM, MVT::f32, 3 },
{ ISD::FMAXNUM, MVT::v4f32, 3 },
{ ISD::FMAXNUM, MVT::v8f32, 5 },
{ ISD::FMAXNUM, MVT::f64, 3 },
{ ISD::FMAXNUM, MVT::v2f64, 3 },
{ ISD::FMAXNUM, MVT::v4f64, 5 },
{ ISD::FSQRT, MVT::f32, 14 }, // SNB from http://www.agner.org/
{ ISD::FSQRT, MVT::v4f32, 14 }, // SNB from http://www.agner.org/
{ ISD::FSQRT, MVT::v8f32, 28 }, // SNB from http://www.agner.org/
{ ISD::FSQRT, MVT::f64, 21 }, // SNB from http://www.agner.org/
{ ISD::FSQRT, MVT::v2f64, 21 }, // SNB from http://www.agner.org/
{ ISD::FSQRT, MVT::v4f64, 43 }, // SNB from http://www.agner.org/
};
static const CostTblEntry GLMCostTbl[] = {
{ ISD::FSQRT, MVT::f32, 19 }, // sqrtss
{ ISD::FSQRT, MVT::v4f32, 37 }, // sqrtps
{ ISD::FSQRT, MVT::f64, 34 }, // sqrtsd
{ ISD::FSQRT, MVT::v2f64, 67 }, // sqrtpd
};
static const CostTblEntry SLMCostTbl[] = {
{ ISD::FSQRT, MVT::f32, 20 }, // sqrtss
{ ISD::FSQRT, MVT::v4f32, 40 }, // sqrtps
{ ISD::FSQRT, MVT::f64, 35 }, // sqrtsd
{ ISD::FSQRT, MVT::v2f64, 70 }, // sqrtpd
};
static const CostTblEntry SSE42CostTbl[] = {
{ ISD::USUBSAT, MVT::v4i32, 2 }, // pmaxud + psubd
{ ISD::UADDSAT, MVT::v4i32, 3 }, // not + pminud + paddd
{ ISD::FSQRT, MVT::f32, 18 }, // Nehalem from http://www.agner.org/
{ ISD::FSQRT, MVT::v4f32, 18 }, // Nehalem from http://www.agner.org/
};
static const CostTblEntry SSSE3CostTbl[] = {
{ ISD::BITREVERSE, MVT::v2i64, 5 },
{ ISD::BITREVERSE, MVT::v4i32, 5 },
{ ISD::BITREVERSE, MVT::v8i16, 5 },
{ ISD::BITREVERSE, MVT::v16i8, 5 },
{ ISD::BSWAP, MVT::v2i64, 1 },
{ ISD::BSWAP, MVT::v4i32, 1 },
{ ISD::BSWAP, MVT::v8i16, 1 },
{ ISD::CTLZ, MVT::v2i64, 23 },
{ ISD::CTLZ, MVT::v4i32, 18 },
{ ISD::CTLZ, MVT::v8i16, 14 },
{ ISD::CTLZ, MVT::v16i8, 9 },
{ ISD::CTPOP, MVT::v2i64, 7 },
{ ISD::CTPOP, MVT::v4i32, 11 },
{ ISD::CTPOP, MVT::v8i16, 9 },
{ ISD::CTPOP, MVT::v16i8, 6 },
{ ISD::CTTZ, MVT::v2i64, 10 },
{ ISD::CTTZ, MVT::v4i32, 14 },
{ ISD::CTTZ, MVT::v8i16, 12 },
{ ISD::CTTZ, MVT::v16i8, 9 }
};
static const CostTblEntry SSE2CostTbl[] = {
{ ISD::BITREVERSE, MVT::v2i64, 29 },
{ ISD::BITREVERSE, MVT::v4i32, 27 },
{ ISD::BITREVERSE, MVT::v8i16, 27 },
{ ISD::BITREVERSE, MVT::v16i8, 20 },
{ ISD::BSWAP, MVT::v2i64, 7 },
{ ISD::BSWAP, MVT::v4i32, 7 },
{ ISD::BSWAP, MVT::v8i16, 7 },
{ ISD::CTLZ, MVT::v2i64, 25 },
{ ISD::CTLZ, MVT::v4i32, 26 },
{ ISD::CTLZ, MVT::v8i16, 20 },
{ ISD::CTLZ, MVT::v16i8, 17 },
{ ISD::CTPOP, MVT::v2i64, 12 },
{ ISD::CTPOP, MVT::v4i32, 15 },
{ ISD::CTPOP, MVT::v8i16, 13 },
{ ISD::CTPOP, MVT::v16i8, 10 },
{ ISD::CTTZ, MVT::v2i64, 14 },
{ ISD::CTTZ, MVT::v4i32, 18 },
{ ISD::CTTZ, MVT::v8i16, 16 },
{ ISD::CTTZ, MVT::v16i8, 13 },
{ ISD::SADDSAT, MVT::v8i16, 1 },
{ ISD::SADDSAT, MVT::v16i8, 1 },
{ ISD::SSUBSAT, MVT::v8i16, 1 },
{ ISD::SSUBSAT, MVT::v16i8, 1 },
{ ISD::UADDSAT, MVT::v8i16, 1 },
{ ISD::UADDSAT, MVT::v16i8, 1 },
{ ISD::USUBSAT, MVT::v8i16, 1 },
{ ISD::USUBSAT, MVT::v16i8, 1 },
{ ISD::FMAXNUM, MVT::f64, 4 },
{ ISD::FMAXNUM, MVT::v2f64, 4 },
{ ISD::FSQRT, MVT::f64, 32 }, // Nehalem from http://www.agner.org/
{ ISD::FSQRT, MVT::v2f64, 32 }, // Nehalem from http://www.agner.org/
};
static const CostTblEntry SSE1CostTbl[] = {
{ ISD::FMAXNUM, MVT::f32, 4 },
{ ISD::FMAXNUM, MVT::v4f32, 4 },
{ ISD::FSQRT, MVT::f32, 28 }, // Pentium III from http://www.agner.org/
{ ISD::FSQRT, MVT::v4f32, 56 }, // Pentium III from http://www.agner.org/
};
static const CostTblEntry BMI64CostTbl[] = { // 64-bit targets
{ ISD::CTTZ, MVT::i64, 1 },
};
static const CostTblEntry BMI32CostTbl[] = { // 32 or 64-bit targets
{ ISD::CTTZ, MVT::i32, 1 },
{ ISD::CTTZ, MVT::i16, 1 },
{ ISD::CTTZ, MVT::i8, 1 },
};
static const CostTblEntry LZCNT64CostTbl[] = { // 64-bit targets
{ ISD::CTLZ, MVT::i64, 1 },
};
static const CostTblEntry LZCNT32CostTbl[] = { // 32 or 64-bit targets
{ ISD::CTLZ, MVT::i32, 1 },
{ ISD::CTLZ, MVT::i16, 1 },
{ ISD::CTLZ, MVT::i8, 1 },
};
static const CostTblEntry POPCNT64CostTbl[] = { // 64-bit targets
{ ISD::CTPOP, MVT::i64, 1 },
};
static const CostTblEntry POPCNT32CostTbl[] = { // 32 or 64-bit targets
{ ISD::CTPOP, MVT::i32, 1 },
{ ISD::CTPOP, MVT::i16, 1 },
{ ISD::CTPOP, MVT::i8, 1 },
};
static const CostTblEntry X64CostTbl[] = { // 64-bit targets
{ ISD::BITREVERSE, MVT::i64, 14 },
{ ISD::CTLZ, MVT::i64, 4 }, // BSR+XOR or BSR+XOR+CMOV
{ ISD::CTTZ, MVT::i64, 3 }, // TEST+BSF+CMOV/BRANCH
{ ISD::CTPOP, MVT::i64, 10 },
{ ISD::SADDO, MVT::i64, 1 },
{ ISD::UADDO, MVT::i64, 1 },
};
static const CostTblEntry X86CostTbl[] = { // 32 or 64-bit targets
{ ISD::BITREVERSE, MVT::i32, 14 },
{ ISD::BITREVERSE, MVT::i16, 14 },
{ ISD::BITREVERSE, MVT::i8, 11 },
{ ISD::CTLZ, MVT::i32, 4 }, // BSR+XOR or BSR+XOR+CMOV
{ ISD::CTLZ, MVT::i16, 4 }, // BSR+XOR or BSR+XOR+CMOV
{ ISD::CTLZ, MVT::i8, 4 }, // BSR+XOR or BSR+XOR+CMOV
{ ISD::CTTZ, MVT::i32, 3 }, // TEST+BSF+CMOV/BRANCH
{ ISD::CTTZ, MVT::i16, 3 }, // TEST+BSF+CMOV/BRANCH
{ ISD::CTTZ, MVT::i8, 3 }, // TEST+BSF+CMOV/BRANCH
{ ISD::CTPOP, MVT::i32, 8 },
{ ISD::CTPOP, MVT::i16, 9 },
{ ISD::CTPOP, MVT::i8, 7 },
{ ISD::SADDO, MVT::i32, 1 },
{ ISD::SADDO, MVT::i16, 1 },
{ ISD::SADDO, MVT::i8, 1 },
{ ISD::UADDO, MVT::i32, 1 },
{ ISD::UADDO, MVT::i16, 1 },
{ ISD::UADDO, MVT::i8, 1 },
};
Type *RetTy = ICA.getReturnType();
Type *OpTy = RetTy;
Intrinsic::ID IID = ICA.getID();
unsigned ISD = ISD::DELETED_NODE;
switch (IID) {
default:
break;
case Intrinsic::bitreverse:
ISD = ISD::BITREVERSE;
break;
case Intrinsic::bswap:
ISD = ISD::BSWAP;
break;
case Intrinsic::ctlz:
ISD = ISD::CTLZ;
break;
case Intrinsic::ctpop:
ISD = ISD::CTPOP;
break;
case Intrinsic::cttz:
ISD = ISD::CTTZ;
break;
case Intrinsic::maxnum:
case Intrinsic::minnum:
// FMINNUM has same costs so don't duplicate.
ISD = ISD::FMAXNUM;
break;
case Intrinsic::sadd_sat:
ISD = ISD::SADDSAT;
break;
case Intrinsic::ssub_sat:
ISD = ISD::SSUBSAT;
break;
case Intrinsic::uadd_sat:
ISD = ISD::UADDSAT;
break;
case Intrinsic::usub_sat:
ISD = ISD::USUBSAT;
break;
case Intrinsic::sqrt:
ISD = ISD::FSQRT;
break;
case Intrinsic::sadd_with_overflow:
case Intrinsic::ssub_with_overflow:
// SSUBO has same costs so don't duplicate.
ISD = ISD::SADDO;
OpTy = RetTy->getContainedType(0);
break;
case Intrinsic::uadd_with_overflow:
case Intrinsic::usub_with_overflow:
// USUBO has same costs so don't duplicate.
ISD = ISD::UADDO;
OpTy = RetTy->getContainedType(0);
break;
}
if (ISD != ISD::DELETED_NODE) {
// Legalize the type.
std::pair<int, MVT> LT = TLI->getTypeLegalizationCost(DL, OpTy);
MVT MTy = LT.second;
// Attempt to lookup cost.
if (ST->useGLMDivSqrtCosts())
if (const auto *Entry = CostTableLookup(GLMCostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (ST->isSLM())
if (const auto *Entry = CostTableLookup(SLMCostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (ST->hasCDI())
if (const auto *Entry = CostTableLookup(AVX512CDCostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (ST->hasBWI())
if (const auto *Entry = CostTableLookup(AVX512BWCostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (ST->hasAVX512())
if (const auto *Entry = CostTableLookup(AVX512CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (ST->hasXOP())
if (const auto *Entry = CostTableLookup(XOPCostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (ST->hasAVX2())
if (const auto *Entry = CostTableLookup(AVX2CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (ST->hasAVX())
if (const auto *Entry = CostTableLookup(AVX1CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (ST->hasSSE42())
if (const auto *Entry = CostTableLookup(SSE42CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (ST->hasSSSE3())
if (const auto *Entry = CostTableLookup(SSSE3CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (ST->hasSSE2())
if (const auto *Entry = CostTableLookup(SSE2CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (ST->hasSSE1())
if (const auto *Entry = CostTableLookup(SSE1CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (ST->hasBMI()) {
if (ST->is64Bit())
if (const auto *Entry = CostTableLookup(BMI64CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (const auto *Entry = CostTableLookup(BMI32CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
}
if (ST->hasLZCNT()) {
if (ST->is64Bit())
if (const auto *Entry = CostTableLookup(LZCNT64CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (const auto *Entry = CostTableLookup(LZCNT32CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
}
if (ST->hasPOPCNT()) {
if (ST->is64Bit())
if (const auto *Entry = CostTableLookup(POPCNT64CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (const auto *Entry = CostTableLookup(POPCNT32CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
}
// TODO - add BMI (TZCNT) scalar handling
if (ST->is64Bit())
if (const auto *Entry = CostTableLookup(X64CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (const auto *Entry = CostTableLookup(X86CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
}
return BaseT::getIntrinsicInstrCost(ICA, CostKind);
}
int X86TTIImpl::getIntrinsicInstrCost(const IntrinsicCostAttributes &ICA,
TTI::TargetCostKind CostKind) {
if (CostKind != TTI::TCK_RecipThroughput)
return BaseT::getIntrinsicInstrCost(ICA, CostKind);
if (ICA.isTypeBasedOnly())
return getTypeBasedIntrinsicInstrCost(ICA, CostKind);
static const CostTblEntry AVX512CostTbl[] = {
{ ISD::ROTL, MVT::v8i64, 1 },
{ ISD::ROTL, MVT::v4i64, 1 },
{ ISD::ROTL, MVT::v2i64, 1 },
{ ISD::ROTL, MVT::v16i32, 1 },
{ ISD::ROTL, MVT::v8i32, 1 },
{ ISD::ROTL, MVT::v4i32, 1 },
{ ISD::ROTR, MVT::v8i64, 1 },
{ ISD::ROTR, MVT::v4i64, 1 },
{ ISD::ROTR, MVT::v2i64, 1 },
{ ISD::ROTR, MVT::v16i32, 1 },
{ ISD::ROTR, MVT::v8i32, 1 },
{ ISD::ROTR, MVT::v4i32, 1 }
};
// XOP: ROTL = VPROT(X,Y), ROTR = VPROT(X,SUB(0,Y))
static const CostTblEntry XOPCostTbl[] = {
{ ISD::ROTL, MVT::v4i64, 4 },
{ ISD::ROTL, MVT::v8i32, 4 },
{ ISD::ROTL, MVT::v16i16, 4 },
{ ISD::ROTL, MVT::v32i8, 4 },
{ ISD::ROTL, MVT::v2i64, 1 },
{ ISD::ROTL, MVT::v4i32, 1 },
{ ISD::ROTL, MVT::v8i16, 1 },
{ ISD::ROTL, MVT::v16i8, 1 },
{ ISD::ROTR, MVT::v4i64, 6 },
{ ISD::ROTR, MVT::v8i32, 6 },
{ ISD::ROTR, MVT::v16i16, 6 },
{ ISD::ROTR, MVT::v32i8, 6 },
{ ISD::ROTR, MVT::v2i64, 2 },
{ ISD::ROTR, MVT::v4i32, 2 },
{ ISD::ROTR, MVT::v8i16, 2 },
{ ISD::ROTR, MVT::v16i8, 2 }
};
static const CostTblEntry X64CostTbl[] = { // 64-bit targets
{ ISD::ROTL, MVT::i64, 1 },
{ ISD::ROTR, MVT::i64, 1 },
{ ISD::FSHL, MVT::i64, 4 }
};
static const CostTblEntry X86CostTbl[] = { // 32 or 64-bit targets
{ ISD::ROTL, MVT::i32, 1 },
{ ISD::ROTL, MVT::i16, 1 },
{ ISD::ROTL, MVT::i8, 1 },
{ ISD::ROTR, MVT::i32, 1 },
{ ISD::ROTR, MVT::i16, 1 },
{ ISD::ROTR, MVT::i8, 1 },
{ ISD::FSHL, MVT::i32, 4 },
{ ISD::FSHL, MVT::i16, 4 },
{ ISD::FSHL, MVT::i8, 4 }
};
Intrinsic::ID IID = ICA.getID();
Type *RetTy = ICA.getReturnType();
const SmallVectorImpl<const Value *> &Args = ICA.getArgs();
unsigned ISD = ISD::DELETED_NODE;
switch (IID) {
default:
break;
case Intrinsic::fshl:
ISD = ISD::FSHL;
if (Args[0] == Args[1])
ISD = ISD::ROTL;
break;
case Intrinsic::fshr:
// FSHR has same costs so don't duplicate.
ISD = ISD::FSHL;
if (Args[0] == Args[1])
ISD = ISD::ROTR;
break;
}
if (ISD != ISD::DELETED_NODE) {
// Legalize the type.
std::pair<int, MVT> LT = TLI->getTypeLegalizationCost(DL, RetTy);
MVT MTy = LT.second;
// Attempt to lookup cost.
if (ST->hasAVX512())
if (const auto *Entry = CostTableLookup(AVX512CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (ST->hasXOP())
if (const auto *Entry = CostTableLookup(XOPCostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (ST->is64Bit())
if (const auto *Entry = CostTableLookup(X64CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (const auto *Entry = CostTableLookup(X86CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
}
return BaseT::getIntrinsicInstrCost(ICA, CostKind);
}
int X86TTIImpl::getVectorInstrCost(unsigned Opcode, Type *Val, unsigned Index) {
static const CostTblEntry SLMCostTbl[] = {
{ ISD::EXTRACT_VECTOR_ELT, MVT::i8, 4 },
{ ISD::EXTRACT_VECTOR_ELT, MVT::i16, 4 },
{ ISD::EXTRACT_VECTOR_ELT, MVT::i32, 4 },
{ ISD::EXTRACT_VECTOR_ELT, MVT::i64, 7 }
};
assert(Val->isVectorTy() && "This must be a vector type");
Type *ScalarType = Val->getScalarType();
int RegisterFileMoveCost = 0;
if (Index != -1U && (Opcode == Instruction::ExtractElement ||
Opcode == Instruction::InsertElement)) {
// Legalize the type.
std::pair<int, MVT> LT = TLI->getTypeLegalizationCost(DL, Val);
// This type is legalized to a scalar type.
if (!LT.second.isVector())
return 0;
// The type may be split. Normalize the index to the new type.
unsigned NumElts = LT.second.getVectorNumElements();
unsigned SubNumElts = NumElts;
Index = Index % NumElts;
// For >128-bit vectors, we need to extract higher 128-bit subvectors.
// For inserts, we also need to insert the subvector back.
if (LT.second.getSizeInBits() > 128) {
assert((LT.second.getSizeInBits() % 128) == 0 && "Illegal vector");
unsigned NumSubVecs = LT.second.getSizeInBits() / 128;
SubNumElts = NumElts / NumSubVecs;
if (SubNumElts <= Index) {
RegisterFileMoveCost += (Opcode == Instruction::InsertElement ? 2 : 1);
Index %= SubNumElts;
}
}
if (Index == 0) {
// Floating point scalars are already located in index #0.
// Many insertions to #0 can fold away for scalar fp-ops, so let's assume
// true for all.
if (ScalarType->isFloatingPointTy())
return RegisterFileMoveCost;
// Assume movd/movq XMM -> GPR is relatively cheap on all targets.
if (ScalarType->isIntegerTy() && Opcode == Instruction::ExtractElement)
return 1 + RegisterFileMoveCost;
}
int ISD = TLI->InstructionOpcodeToISD(Opcode);
assert(ISD && "Unexpected vector opcode");
MVT MScalarTy = LT.second.getScalarType();
if (ST->isSLM())
if (auto *Entry = CostTableLookup(SLMCostTbl, ISD, MScalarTy))
return Entry->Cost + RegisterFileMoveCost;
// Assume pinsr/pextr XMM <-> GPR is relatively cheap on all targets.
if ((MScalarTy == MVT::i16 && ST->hasSSE2()) ||
(MScalarTy.isInteger() && ST->hasSSE41()))
return 1 + RegisterFileMoveCost;
// Assume insertps is relatively cheap on all targets.
if (MScalarTy == MVT::f32 && ST->hasSSE41() &&
Opcode == Instruction::InsertElement)
return 1 + RegisterFileMoveCost;
// For extractions we just need to shuffle the element to index 0, which
// should be very cheap (assume cost = 1). For insertions we need to shuffle
// the elements to its destination. In both cases we must handle the
// subvector move(s).
// If the vector type is already less than 128-bits then don't reduce it.
// TODO: Under what circumstances should we shuffle using the full width?
int ShuffleCost = 1;
if (Opcode == Instruction::InsertElement) {
auto *SubTy = cast<VectorType>(Val);
EVT VT = TLI->getValueType(DL, Val);
if (VT.getScalarType() != MScalarTy || VT.getSizeInBits() >= 128)
SubTy = FixedVectorType::get(ScalarType, SubNumElts);
ShuffleCost = getShuffleCost(TTI::SK_PermuteTwoSrc, SubTy, 0, SubTy);
}
int IntOrFpCost = ScalarType->isFloatingPointTy() ? 0 : 1;
return ShuffleCost + IntOrFpCost + RegisterFileMoveCost;
}
// Add to the base cost if we know that the extracted element of a vector is
// destined to be moved to and used in the integer register file.
if (Opcode == Instruction::ExtractElement && ScalarType->isPointerTy())
RegisterFileMoveCost += 1;
return BaseT::getVectorInstrCost(Opcode, Val, Index) + RegisterFileMoveCost;
}
unsigned X86TTIImpl::getScalarizationOverhead(VectorType *Ty,
const APInt &DemandedElts,
bool Insert, bool Extract) {
unsigned Cost = 0;
// For insertions, a ISD::BUILD_VECTOR style vector initialization can be much
// cheaper than an accumulation of ISD::INSERT_VECTOR_ELT.
if (Insert) {
std::pair<int, MVT> LT = TLI->getTypeLegalizationCost(DL, Ty);
MVT MScalarTy = LT.second.getScalarType();
if ((MScalarTy == MVT::i16 && ST->hasSSE2()) ||
(MScalarTy.isInteger() && ST->hasSSE41()) ||
(MScalarTy == MVT::f32 && ST->hasSSE41())) {
// For types we can insert directly, insertion into 128-bit sub vectors is
// cheap, followed by a cheap chain of concatenations.
if (LT.second.getSizeInBits() <= 128) {
Cost +=
BaseT::getScalarizationOverhead(Ty, DemandedElts, Insert, false);
} else {
unsigned NumSubVecs = LT.second.getSizeInBits() / 128;
Cost += (PowerOf2Ceil(NumSubVecs) - 1) * LT.first;
Cost += DemandedElts.countPopulation();
// For vXf32 cases, insertion into the 0'th index in each v4f32
// 128-bit vector is free.
// NOTE: This assumes legalization widens vXf32 vectors.
if (MScalarTy == MVT::f32)
for (unsigned i = 0, e = cast<FixedVectorType>(Ty)->getNumElements();
i < e; i += 4)
if (DemandedElts[i])
Cost--;
}
} else if (LT.second.isVector()) {
// Without fast insertion, we need to use MOVD/MOVQ to pass each demanded
// integer element as a SCALAR_TO_VECTOR, then we build the vector as a
// series of UNPCK followed by CONCAT_VECTORS - all of these can be
// considered cheap.
if (Ty->isIntOrIntVectorTy())
Cost += DemandedElts.countPopulation();
// Get the smaller of the legalized or original pow2-extended number of
// vector elements, which represents the number of unpacks we'll end up
// performing.
unsigned NumElts = LT.second.getVectorNumElements();
unsigned Pow2Elts =
PowerOf2Ceil(cast<FixedVectorType>(Ty)->getNumElements());
Cost += (std::min<unsigned>(NumElts, Pow2Elts) - 1) * LT.first;
}
}
// TODO: Use default extraction for now, but we should investigate extending this
// to handle repeated subvector extraction.
if (Extract)
Cost += BaseT::getScalarizationOverhead(Ty, DemandedElts, false, Extract);
return Cost;
}
int X86TTIImpl::getMemoryOpCost(unsigned Opcode, Type *Src,
MaybeAlign Alignment, unsigned AddressSpace,
TTI::TargetCostKind CostKind,
const Instruction *I) {
// TODO: Handle other cost kinds.
if (CostKind != TTI::TCK_RecipThroughput) {
if (isa_and_nonnull<StoreInst>(I)) {
Value *Ptr = I->getOperand(1);
// Store instruction with index and scale costs 2 Uops.
// Check the preceding GEP to identify non-const indices.
if (auto *GEP = dyn_cast<GetElementPtrInst>(Ptr)) {
if (!all_of(GEP->indices(), [](Value *V) { return isa<Constant>(V); }))
return TTI::TCC_Basic * 2;
}
}
return TTI::TCC_Basic;
}
// Handle non-power-of-two vectors such as <3 x float>
if (auto *VTy = dyn_cast<FixedVectorType>(Src)) {
unsigned NumElem = VTy->getNumElements();
// Handle a few common cases:
// <3 x float>
if (NumElem == 3 && VTy->getScalarSizeInBits() == 32)
// Cost = 64 bit store + extract + 32 bit store.
return 3;
// <3 x double>
if (NumElem == 3 && VTy->getScalarSizeInBits() == 64)
// Cost = 128 bit store + unpack + 64 bit store.
return 3;
// Assume that all other non-power-of-two numbers are scalarized.
if (!isPowerOf2_32(NumElem)) {
APInt DemandedElts = APInt::getAllOnesValue(NumElem);
int Cost = BaseT::getMemoryOpCost(Opcode, VTy->getScalarType(), Alignment,
AddressSpace, CostKind);
int SplitCost = getScalarizationOverhead(VTy, DemandedElts,
Opcode == Instruction::Load,
Opcode == Instruction::Store);
return NumElem * Cost + SplitCost;
}
}
// Type legalization can't handle structs
if (TLI->getValueType(DL, Src, true) == MVT::Other)
return BaseT::getMemoryOpCost(Opcode, Src, Alignment, AddressSpace,
CostKind);
// Legalize the type.
std::pair<int, MVT> LT = TLI->getTypeLegalizationCost(DL, Src);
assert((Opcode == Instruction::Load || Opcode == Instruction::Store) &&
"Invalid Opcode");
// Each load/store unit costs 1.
int Cost = LT.first * 1;
// This isn't exactly right. We're using slow unaligned 32-byte accesses as a
// proxy for a double-pumped AVX memory interface such as on Sandybridge.
if (LT.second.getStoreSize() == 32 && ST->isUnalignedMem32Slow())
Cost *= 2;
return Cost;
}
int X86TTIImpl::getMaskedMemoryOpCost(unsigned Opcode, Type *SrcTy,
Align Alignment, unsigned AddressSpace,
TTI::TargetCostKind CostKind) {
bool IsLoad = (Instruction::Load == Opcode);
bool IsStore = (Instruction::Store == Opcode);
auto *SrcVTy = dyn_cast<FixedVectorType>(SrcTy);
if (!SrcVTy)
// To calculate scalar take the regular cost, without mask
return getMemoryOpCost(Opcode, SrcTy, Alignment, AddressSpace, CostKind);
unsigned NumElem = SrcVTy->getNumElements();
auto *MaskTy =
FixedVectorType::get(Type::getInt8Ty(SrcVTy->getContext()), NumElem);
if ((IsLoad && !isLegalMaskedLoad(SrcVTy, Alignment)) ||
(IsStore && !isLegalMaskedStore(SrcVTy, Alignment)) ||
!isPowerOf2_32(NumElem)) {
// Scalarization
APInt DemandedElts = APInt::getAllOnesValue(NumElem);
int MaskSplitCost =
getScalarizationOverhead(MaskTy, DemandedElts, false, true);
int ScalarCompareCost = getCmpSelInstrCost(
Instruction::ICmp, Type::getInt8Ty(SrcVTy->getContext()), nullptr,
CostKind);
int BranchCost = getCFInstrCost(Instruction::Br, CostKind);
int MaskCmpCost = NumElem * (BranchCost + ScalarCompareCost);
int ValueSplitCost =
getScalarizationOverhead(SrcVTy, DemandedElts, IsLoad, IsStore);
int MemopCost =
NumElem * BaseT::getMemoryOpCost(Opcode, SrcVTy->getScalarType(),
Alignment, AddressSpace, CostKind);
return MemopCost + ValueSplitCost + MaskSplitCost + MaskCmpCost;
}
// Legalize the type.
std::pair<int, MVT> LT = TLI->getTypeLegalizationCost(DL, SrcVTy);
auto VT = TLI->getValueType(DL, SrcVTy);
int Cost = 0;
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_PermuteTwoSrc, SrcVTy, 0, nullptr) +
getShuffleCost(TTI::SK_PermuteTwoSrc, MaskTy, 0, nullptr);
else if (LT.second.getVectorNumElements() > NumElem) {
auto *NewMaskTy = FixedVectorType::get(MaskTy->getElementType(),
LT.second.getVectorNumElements());
// Expanding requires fill mask with zeroes
Cost += getShuffleCost(TTI::SK_InsertSubvector, NewMaskTy, 0, MaskTy);
}
// Pre-AVX512 - each maskmov load costs 2 + store costs ~8.
if (!ST->hasAVX512())
return Cost + LT.first * (IsLoad ? 2 : 8);
// AVX-512 masked load/store is cheapper
return Cost + LT.first;
}
int X86TTIImpl::getAddressComputationCost(Type *Ty, ScalarEvolution *SE,
const SCEV *Ptr) {
// Address computations in vectorized code with non-consecutive addresses will
// likely result in more instructions compared to scalar code where the
// computation can more often be merged into the index mode. The resulting
// extra micro-ops can significantly decrease throughput.
const unsigned NumVectorInstToHideOverhead = 10;
// Cost modeling of Strided Access Computation is hidden by the indexing
// modes of X86 regardless of the stride value. We dont believe that there
// is a difference between constant strided access in gerenal and constant
// strided value which is less than or equal to 64.
// Even in the case of (loop invariant) stride whose value is not known at
// compile time, the address computation will not incur more than one extra
// ADD instruction.
if (Ty->isVectorTy() && SE) {
if (!BaseT::isStridedAccess(Ptr))
return NumVectorInstToHideOverhead;
if (!BaseT::getConstantStrideStep(SE, Ptr))
return 1;
}
return BaseT::getAddressComputationCost(Ty, SE, Ptr);
}
int X86TTIImpl::getArithmeticReductionCost(unsigned Opcode, VectorType *ValTy,
bool IsPairwise,
TTI::TargetCostKind CostKind) {
// Just use the default implementation for pair reductions.
if (IsPairwise)
return BaseT::getArithmeticReductionCost(Opcode, ValTy, IsPairwise, CostKind);
// We use the Intel Architecture Code Analyzer(IACA) to measure the throughput
// and make it as the cost.
static const CostTblEntry SLMCostTblNoPairWise[] = {
{ ISD::FADD, MVT::v2f64, 3 },
{ ISD::ADD, MVT::v2i64, 5 },
};
static const CostTblEntry SSE2CostTblNoPairWise[] = {
{ 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::v2i32, 2 }, // FIXME: chosen to be less than v4i32
{ ISD::ADD, MVT::v4i32, 3 }, // The data reported by the IACA tool is "3.3".
{ ISD::ADD, MVT::v2i16, 2 }, // The data reported by the IACA tool is "4.3".
{ ISD::ADD, MVT::v4i16, 3 }, // The data reported by the IACA tool is "4.3".
{ ISD::ADD, MVT::v8i16, 4 }, // The data reported by the IACA tool is "4.3".
{ ISD::ADD, MVT::v2i8, 2 },
{ ISD::ADD, MVT::v4i8, 2 },
{ ISD::ADD, MVT::v8i8, 2 },
{ ISD::ADD, MVT::v16i8, 3 },
};
static const CostTblEntry AVX1CostTblNoPairWise[] = {
{ ISD::FADD, MVT::v4f64, 3 },
{ ISD::FADD, MVT::v4f32, 3 },
{ ISD::FADD, MVT::v8f32, 4 },
{ ISD::ADD, MVT::v2i64, 1 }, // The data reported by the IACA tool is "1.5".
{ ISD::ADD, MVT::v4i64, 3 },
{ ISD::ADD, MVT::v8i32, 5 },
{ ISD::ADD, MVT::v16i16, 5 },
{ ISD::ADD, MVT::v32i8, 4 },
};
int ISD = TLI->InstructionOpcodeToISD(Opcode);
assert(ISD && "Invalid opcode");
// Before legalizing the type, give a chance to look up illegal narrow types
// in the table.
// FIXME: Is there a better way to do this?
EVT VT = TLI->getValueType(DL, ValTy);
if (VT.isSimple()) {
MVT MTy = VT.getSimpleVT();
if (ST->isSLM())
if (const auto *Entry = CostTableLookup(SLMCostTblNoPairWise, ISD, MTy))
return Entry->Cost;
if (ST->hasAVX())
if (const auto *Entry = CostTableLookup(AVX1CostTblNoPairWise, ISD, MTy))
return Entry->Cost;
if (ST->hasSSE2())
if (const auto *Entry = CostTableLookup(SSE2CostTblNoPairWise, ISD, MTy))
return Entry->Cost;
}
std::pair<int, MVT> LT = TLI->getTypeLegalizationCost(DL, ValTy);
MVT MTy = LT.second;
auto *ValVTy = cast<FixedVectorType>(ValTy);
unsigned ArithmeticCost = 0;
if (LT.first != 1 && MTy.isVector() &&
MTy.getVectorNumElements() < ValVTy->getNumElements()) {
// Type needs to be split. We need LT.first - 1 arithmetic ops.
auto *SingleOpTy = FixedVectorType::get(ValVTy->getElementType(),
MTy.getVectorNumElements());
ArithmeticCost = getArithmeticInstrCost(Opcode, SingleOpTy, CostKind);
ArithmeticCost *= LT.first - 1;
}
if (ST->isSLM())
if (const auto *Entry = CostTableLookup(SLMCostTblNoPairWise, ISD, MTy))
return ArithmeticCost + Entry->Cost;
if (ST->hasAVX())
if (const auto *Entry = CostTableLookup(AVX1CostTblNoPairWise, ISD, MTy))
return ArithmeticCost + Entry->Cost;
if (ST->hasSSE2())
if (const auto *Entry = CostTableLookup(SSE2CostTblNoPairWise, ISD, MTy))
return ArithmeticCost + Entry->Cost;
// FIXME: These assume a naive kshift+binop lowering, which is probably
// conservative in most cases.
static const CostTblEntry AVX512BoolReduction[] = {
{ ISD::AND, MVT::v2i1, 3 },
{ ISD::AND, MVT::v4i1, 5 },
{ ISD::AND, MVT::v8i1, 7 },
{ ISD::AND, MVT::v16i1, 9 },
{ ISD::AND, MVT::v32i1, 11 },
{ ISD::AND, MVT::v64i1, 13 },
{ ISD::OR, MVT::v2i1, 3 },
{ ISD::OR, MVT::v4i1, 5 },
{ ISD::OR, MVT::v8i1, 7 },
{ ISD::OR, MVT::v16i1, 9 },
{ ISD::OR, MVT::v32i1, 11 },
{ ISD::OR, MVT::v64i1, 13 },
};
static const CostTblEntry AVX2BoolReduction[] = {
{ ISD::AND, MVT::v16i16, 2 }, // vpmovmskb + cmp
{ ISD::AND, MVT::v32i8, 2 }, // vpmovmskb + cmp
{ ISD::OR, MVT::v16i16, 2 }, // vpmovmskb + cmp
{ ISD::OR, MVT::v32i8, 2 }, // vpmovmskb + cmp
};
static const CostTblEntry AVX1BoolReduction[] = {
{ ISD::AND, MVT::v4i64, 2 }, // vmovmskpd + cmp
{ ISD::AND, MVT::v8i32, 2 }, // vmovmskps + cmp
{ ISD::AND, MVT::v16i16, 4 }, // vextractf128 + vpand + vpmovmskb + cmp
{ ISD::AND, MVT::v32i8, 4 }, // vextractf128 + vpand + vpmovmskb + cmp
{ ISD::OR, MVT::v4i64, 2 }, // vmovmskpd + cmp
{ ISD::OR, MVT::v8i32, 2 }, // vmovmskps + cmp
{ ISD::OR, MVT::v16i16, 4 }, // vextractf128 + vpor + vpmovmskb + cmp
{ ISD::OR, MVT::v32i8, 4 }, // vextractf128 + vpor + vpmovmskb + cmp
};
static const CostTblEntry SSE2BoolReduction[] = {
{ ISD::AND, MVT::v2i64, 2 }, // movmskpd + cmp
{ ISD::AND, MVT::v4i32, 2 }, // movmskps + cmp
{ ISD::AND, MVT::v8i16, 2 }, // pmovmskb + cmp
{ ISD::AND, MVT::v16i8, 2 }, // pmovmskb + cmp
{ ISD::OR, MVT::v2i64, 2 }, // movmskpd + cmp
{ ISD::OR, MVT::v4i32, 2 }, // movmskps + cmp
{ ISD::OR, MVT::v8i16, 2 }, // pmovmskb + cmp
{ ISD::OR, MVT::v16i8, 2 }, // pmovmskb + cmp
};
// Handle bool allof/anyof patterns.
if (ValVTy->getElementType()->isIntegerTy(1)) {
unsigned ArithmeticCost = 0;
if (LT.first != 1 && MTy.isVector() &&
MTy.getVectorNumElements() < ValVTy->getNumElements()) {
// Type needs to be split. We need LT.first - 1 arithmetic ops.
auto *SingleOpTy = FixedVectorType::get(ValVTy->getElementType(),
MTy.getVectorNumElements());
ArithmeticCost = getArithmeticInstrCost(Opcode, SingleOpTy, CostKind);
ArithmeticCost *= LT.first - 1;
}
if (ST->hasAVX512())
if (const auto *Entry = CostTableLookup(AVX512BoolReduction, ISD, MTy))
return ArithmeticCost + Entry->Cost;
if (ST->hasAVX2())
if (const auto *Entry = CostTableLookup(AVX2BoolReduction, ISD, MTy))
return ArithmeticCost + Entry->Cost;
if (ST->hasAVX())
if (const auto *Entry = CostTableLookup(AVX1BoolReduction, ISD, MTy))
return ArithmeticCost + Entry->Cost;
if (ST->hasSSE2())
if (const auto *Entry = CostTableLookup(SSE2BoolReduction, ISD, MTy))
return ArithmeticCost + Entry->Cost;
return BaseT::getArithmeticReductionCost(Opcode, ValVTy, IsPairwise,
CostKind);
}
unsigned NumVecElts = ValVTy->getNumElements();
unsigned ScalarSize = ValVTy->getScalarSizeInBits();
// Special case power of 2 reductions where the scalar type isn't changed
// by type legalization.
if (!isPowerOf2_32(NumVecElts) || ScalarSize != MTy.getScalarSizeInBits())
return BaseT::getArithmeticReductionCost(Opcode, ValVTy, IsPairwise,
CostKind);
unsigned ReductionCost = 0;
auto *Ty = ValVTy;
if (LT.first != 1 && MTy.isVector() &&
MTy.getVectorNumElements() < ValVTy->getNumElements()) {
// Type needs to be split. We need LT.first - 1 arithmetic ops.
Ty = FixedVectorType::get(ValVTy->getElementType(),
MTy.getVectorNumElements());
ReductionCost = getArithmeticInstrCost(Opcode, Ty, CostKind);
ReductionCost *= LT.first - 1;
NumVecElts = MTy.getVectorNumElements();
}
// Now handle reduction with the legal type, taking into account size changes
// at each level.
while (NumVecElts > 1) {
// Determine the size of the remaining vector we need to reduce.
unsigned Size = NumVecElts * ScalarSize;
NumVecElts /= 2;
// If we're reducing from 256/512 bits, use an extract_subvector.
if (Size > 128) {
auto *SubTy = FixedVectorType::get(ValVTy->getElementType(), NumVecElts);
ReductionCost +=
getShuffleCost(TTI::SK_ExtractSubvector, Ty, NumVecElts, SubTy);
Ty = SubTy;
} else if (Size == 128) {
// Reducing from 128 bits is a permute of v2f64/v2i64.
FixedVectorType *ShufTy;
if (ValVTy->isFloatingPointTy())
ShufTy =
FixedVectorType::get(Type::getDoubleTy(ValVTy->getContext()), 2);
else
ShufTy =
FixedVectorType::get(Type::getInt64Ty(ValVTy->getContext()), 2);
ReductionCost +=
getShuffleCost(TTI::SK_PermuteSingleSrc, ShufTy, 0, nullptr);
} else if (Size == 64) {
// Reducing from 64 bits is a shuffle of v4f32/v4i32.
FixedVectorType *ShufTy;
if (ValVTy->isFloatingPointTy())
ShufTy =
FixedVectorType::get(Type::getFloatTy(ValVTy->getContext()), 4);
else
ShufTy =
FixedVectorType::get(Type::getInt32Ty(ValVTy->getContext()), 4);
ReductionCost +=
getShuffleCost(TTI::SK_PermuteSingleSrc, ShufTy, 0, nullptr);
} else {
// Reducing from smaller size is a shift by immediate.
auto *ShiftTy = FixedVectorType::get(
Type::getIntNTy(ValVTy->getContext(), Size), 128 / Size);
ReductionCost += getArithmeticInstrCost(
Instruction::LShr, ShiftTy, CostKind,
TargetTransformInfo::OK_AnyValue,
TargetTransformInfo::OK_UniformConstantValue,
TargetTransformInfo::OP_None, TargetTransformInfo::OP_None);
}
// Add the arithmetic op for this level.
ReductionCost += getArithmeticInstrCost(Opcode, Ty, CostKind);
}
// Add the final extract element to the cost.
return ReductionCost + getVectorInstrCost(Instruction::ExtractElement, Ty, 0);
}
int X86TTIImpl::getMinMaxCost(Type *Ty, Type *CondTy, bool IsUnsigned) {
std::pair<int, MVT> LT = TLI->getTypeLegalizationCost(DL, Ty);
MVT MTy = LT.second;
int ISD;
if (Ty->isIntOrIntVectorTy()) {
ISD = IsUnsigned ? ISD::UMIN : ISD::SMIN;
} else {
assert(Ty->isFPOrFPVectorTy() &&
"Expected float point or integer vector type.");
ISD = ISD::FMINNUM;
}
static const CostTblEntry SSE1CostTbl[] = {
{ISD::FMINNUM, MVT::v4f32, 1},
};
static const CostTblEntry SSE2CostTbl[] = {
{ISD::FMINNUM, MVT::v2f64, 1},
{ISD::SMIN, MVT::v8i16, 1},
{ISD::UMIN, MVT::v16i8, 1},
};
static const CostTblEntry SSE41CostTbl[] = {
{ISD::SMIN, MVT::v4i32, 1},
{ISD::UMIN, MVT::v4i32, 1},
{ISD::UMIN, MVT::v8i16, 1},
{ISD::SMIN, MVT::v16i8, 1},
};
static const CostTblEntry SSE42CostTbl[] = {
{ISD::UMIN, MVT::v2i64, 3}, // xor+pcmpgtq+blendvpd
};
static const CostTblEntry AVX1CostTbl[] = {
{ISD::FMINNUM, MVT::v8f32, 1},
{ISD::FMINNUM, MVT::v4f64, 1},
{ISD::SMIN, MVT::v8i32, 3},
{ISD::UMIN, MVT::v8i32, 3},
{ISD::SMIN, MVT::v16i16, 3},
{ISD::UMIN, MVT::v16i16, 3},
{ISD::SMIN, MVT::v32i8, 3},
{ISD::UMIN, MVT::v32i8, 3},
};
static const CostTblEntry AVX2CostTbl[] = {
{ISD::SMIN, MVT::v8i32, 1},
{ISD::UMIN, MVT::v8i32, 1},
{ISD::SMIN, MVT::v16i16, 1},
{ISD::UMIN, MVT::v16i16, 1},
{ISD::SMIN, MVT::v32i8, 1},
{ISD::UMIN, MVT::v32i8, 1},
};
static const CostTblEntry AVX512CostTbl[] = {
{ISD::FMINNUM, MVT::v16f32, 1},
{ISD::FMINNUM, MVT::v8f64, 1},
{ISD::SMIN, MVT::v2i64, 1},
{ISD::UMIN, MVT::v2i64, 1},
{ISD::SMIN, MVT::v4i64, 1},
{ISD::UMIN, MVT::v4i64, 1},
{ISD::SMIN, MVT::v8i64, 1},
{ISD::UMIN, MVT::v8i64, 1},
{ISD::SMIN, MVT::v16i32, 1},
{ISD::UMIN, MVT::v16i32, 1},
};
static const CostTblEntry AVX512BWCostTbl[] = {
{ISD::SMIN, MVT::v32i16, 1},
{ISD::UMIN, MVT::v32i16, 1},
{ISD::SMIN, MVT::v64i8, 1},
{ISD::UMIN, MVT::v64i8, 1},
};
// If we have a native MIN/MAX instruction for this type, use it.
if (ST->hasBWI())
if (const auto *Entry = CostTableLookup(AVX512BWCostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (ST->hasAVX512())
if (const auto *Entry = CostTableLookup(AVX512CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (ST->hasAVX2())
if (const auto *Entry = CostTableLookup(AVX2CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (ST->hasAVX())
if (const auto *Entry = CostTableLookup(AVX1CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (ST->hasSSE42())
if (const auto *Entry = CostTableLookup(SSE42CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (ST->hasSSE41())
if (const auto *Entry = CostTableLookup(SSE41CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (ST->hasSSE2())
if (const auto *Entry = CostTableLookup(SSE2CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
if (ST->hasSSE1())
if (const auto *Entry = CostTableLookup(SSE1CostTbl, ISD, MTy))
return LT.first * Entry->Cost;
unsigned CmpOpcode;
if (Ty->isFPOrFPVectorTy()) {
CmpOpcode = Instruction::FCmp;
} else {
assert(Ty->isIntOrIntVectorTy() &&
"expecting floating point or integer type for min/max reduction");
CmpOpcode = Instruction::ICmp;
}
TTI::TargetCostKind CostKind = TTI::TCK_RecipThroughput;
// Otherwise fall back to cmp+select.
return getCmpSelInstrCost(CmpOpcode, Ty, CondTy, CostKind) +
getCmpSelInstrCost(Instruction::Select, Ty, CondTy, CostKind);
}
int X86TTIImpl::getMinMaxReductionCost(VectorType *ValTy, VectorType *CondTy,
bool IsPairwise, bool IsUnsigned,
TTI::TargetCostKind CostKind) {
// Just use the default implementation for pair reductions.
if (IsPairwise)
return BaseT::getMinMaxReductionCost(ValTy, CondTy, IsPairwise, IsUnsigned,
CostKind);
std::pair<int, MVT> LT = TLI->getTypeLegalizationCost(DL, ValTy);
MVT MTy = LT.second;
int ISD;
if (ValTy->isIntOrIntVectorTy()) {
ISD = IsUnsigned ? ISD::UMIN : ISD::SMIN;
} else {
assert(ValTy->isFPOrFPVectorTy() &&
"Expected float point or integer vector type.");
ISD = ISD::FMINNUM;
}
// We use the Intel Architecture Code Analyzer(IACA) to measure the throughput
// and make it as the cost.
static const CostTblEntry SSE2CostTblNoPairWise[] = {
{ISD::UMIN, MVT::v2i16, 5}, // need pxors to use pminsw/pmaxsw
{ISD::UMIN, MVT::v4i16, 7}, // need pxors to use pminsw/pmaxsw
{ISD::UMIN, MVT::v8i16, 9}, // need pxors to use pminsw/pmaxsw
};
static const CostTblEntry SSE41CostTblNoPairWise[] = {
{ISD::SMIN, MVT::v2i16, 3}, // same as sse2
{ISD::SMIN, MVT::v4i16, 5}, // same as sse2
{ISD::UMIN, MVT::v2i16, 5}, // same as sse2
{ISD::UMIN, MVT::v4i16, 7}, // same as sse2
{ISD::SMIN, MVT::v8i16, 4}, // phminposuw+xor
{ISD::UMIN, MVT::v8i16, 4}, // FIXME: umin is cheaper than umax
{ISD::SMIN, MVT::v2i8, 3}, // pminsb
{ISD::SMIN, MVT::v4i8, 5}, // pminsb
{ISD::SMIN, MVT::v8i8, 7}, // pminsb
{ISD::SMIN, MVT::v16i8, 6},
{ISD::UMIN, MVT::v2i8, 3}, // same as sse2
{ISD::UMIN, MVT::v4i8, 5}, // same as sse2
{ISD::UMIN, MVT::v8i8, 7}, // same as sse2
{ISD::UMIN, MVT::v16i8, 6}, // FIXME: umin is cheaper than umax
};
static const CostTblEntry AVX1CostTblNoPairWise[] = {
{ISD::SMIN, MVT::v16i16, 6},
{ISD::UMIN, MVT::v16i16, 6}, // FIXME: umin is cheaper than umax
{ISD::SMIN, MVT::v32i8, 8},
{ISD::UMIN, MVT::v32i8, 8},
};
static const CostTblEntry AVX512BWCostTblNoPairWise[] = {
{ISD::SMIN, MVT::v32i16, 8},
{ISD::UMIN, MVT::v32i16, 8}, // FIXME: umin is cheaper than umax
{ISD::SMIN, MVT::v64i8, 10},
{ISD::UMIN, MVT::v64i8, 10},
};
// Before legalizing the type, give a chance to look up illegal narrow types
// in the table.
// FIXME: Is there a better way to do this?
EVT VT = TLI->getValueType(DL, ValTy);
if (VT.isSimple()) {
MVT MTy = VT.getSimpleVT();
if (ST->hasBWI())
if (const auto *Entry = CostTableLookup(AVX512BWCostTblNoPairWise, ISD, MTy))
return Entry->Cost;
if (ST->hasAVX())
if (const auto *Entry = CostTableLookup(AVX1CostTblNoPairWise, ISD, MTy))
return Entry->Cost;
if (ST->hasSSE41())
if (const auto *Entry = CostTableLookup(SSE41CostTblNoPairWise, ISD, MTy))
return Entry->Cost;
if (ST->hasSSE2())
if (const auto *Entry = CostTableLookup(SSE2CostTblNoPairWise, ISD, MTy))
return Entry->Cost;
}
auto *ValVTy = cast<FixedVectorType>(ValTy);
unsigned NumVecElts = ValVTy->getNumElements();
auto *Ty = ValVTy;
unsigned MinMaxCost = 0;
if (LT.first != 1 && MTy.isVector() &&
MTy.getVectorNumElements() < ValVTy->getNumElements()) {
// Type needs to be split. We need LT.first - 1 operations ops.
Ty = FixedVectorType::get(ValVTy->getElementType(),
MTy.getVectorNumElements());
auto *SubCondTy = FixedVectorType::get(CondTy->getElementType(),
MTy.getVectorNumElements());
MinMaxCost = getMinMaxCost(Ty, SubCondTy, IsUnsigned);
MinMaxCost *= LT.first - 1;
NumVecElts = MTy.getVectorNumElements();
}
if (ST->hasBWI())
if (const auto *Entry = CostTableLookup(AVX512BWCostTblNoPairWise, ISD, MTy))
return MinMaxCost + Entry->Cost;
if (ST->hasAVX())
if (const auto *Entry = CostTableLookup(AVX1CostTblNoPairWise, ISD, MTy))
return MinMaxCost + Entry->Cost;
if (ST->hasSSE41())
if (const auto *Entry = CostTableLookup(SSE41CostTblNoPairWise, ISD, MTy))
return MinMaxCost + Entry->Cost;
if (ST->hasSSE2())
if (const auto *Entry = CostTableLookup(SSE2CostTblNoPairWise, ISD, MTy))
return MinMaxCost + Entry->Cost;
unsigned ScalarSize = ValTy->getScalarSizeInBits();
// Special case power of 2 reductions where the scalar type isn't changed
// by type legalization.
if (!isPowerOf2_32(ValVTy->getNumElements()) ||
ScalarSize != MTy.getScalarSizeInBits())
return BaseT::getMinMaxReductionCost(ValTy, CondTy, IsPairwise, IsUnsigned,
CostKind);
// Now handle reduction with the legal type, taking into account size changes
// at each level.
while (NumVecElts > 1) {
// Determine the size of the remaining vector we need to reduce.
unsigned Size = NumVecElts * ScalarSize;
NumVecElts /= 2;
// If we're reducing from 256/512 bits, use an extract_subvector.
if (Size > 128) {
auto *SubTy = FixedVectorType::get(ValVTy->getElementType(), NumVecElts);
MinMaxCost +=
getShuffleCost(TTI::SK_ExtractSubvector, Ty, NumVecElts, SubTy);
Ty = SubTy;
} else if (Size == 128) {
// Reducing from 128 bits is a permute of v2f64/v2i64.
VectorType *ShufTy;
if (ValTy->isFloatingPointTy())
ShufTy =
FixedVectorType::get(Type::getDoubleTy(ValTy->getContext()), 2);
else
ShufTy = FixedVectorType::get(Type::getInt64Ty(ValTy->getContext()), 2);
MinMaxCost +=
getShuffleCost(TTI::SK_PermuteSingleSrc, ShufTy, 0, nullptr);
} else if (Size == 64) {
// Reducing from 64 bits is a shuffle of v4f32/v4i32.
FixedVectorType *ShufTy;
if (ValTy->isFloatingPointTy())
ShufTy = FixedVectorType::get(Type::getFloatTy(ValTy->getContext()), 4);
else
ShufTy = FixedVectorType::get(Type::getInt32Ty(ValTy->getContext()), 4);
MinMaxCost +=
getShuffleCost(TTI::SK_PermuteSingleSrc, ShufTy, 0, nullptr);
} else {
// Reducing from smaller size is a shift by immediate.
auto *ShiftTy = FixedVectorType::get(
Type::getIntNTy(ValTy->getContext(), Size), 128 / Size);
MinMaxCost += getArithmeticInstrCost(
Instruction::LShr, ShiftTy, TTI::TCK_RecipThroughput,
TargetTransformInfo::OK_AnyValue,
TargetTransformInfo::OK_UniformConstantValue,
TargetTransformInfo::OP_None, TargetTransformInfo::OP_None);
}
// Add the arithmetic op for this level.
auto *SubCondTy =
FixedVectorType::get(CondTy->getElementType(), Ty->getNumElements());
MinMaxCost += getMinMaxCost(Ty, SubCondTy, IsUnsigned);
}
// Add the final extract element to the cost.
return MinMaxCost + getVectorInstrCost(Instruction::ExtractElement, Ty, 0);
}
/// Calculate the cost of materializing a 64-bit value. This helper
/// method might only calculate a fraction of a larger immediate. Therefore it
/// is valid to return a cost of ZERO.
int X86TTIImpl::getIntImmCost(int64_t Val) {
if (Val == 0)
return TTI::TCC_Free;
if (isInt<32>(Val))
return TTI::TCC_Basic;
return 2 * TTI::TCC_Basic;
}
int X86TTIImpl::getIntImmCost(const APInt &Imm, Type *Ty,
TTI::TargetCostKind CostKind) {
assert(Ty->isIntegerTy());
unsigned BitSize = Ty->getPrimitiveSizeInBits();
if (BitSize == 0)
return ~0U;
// Never hoist constants larger than 128bit, because this might lead to
// incorrect code generation or assertions in codegen.
// Fixme: Create a cost model for types larger than i128 once the codegen
// issues have been fixed.
if (BitSize > 128)
return TTI::TCC_Free;
if (Imm == 0)
return TTI::TCC_Free;
// Sign-extend all constants to a multiple of 64-bit.
APInt ImmVal = Imm;
if (BitSize % 64 != 0)
ImmVal = Imm.sext(alignTo(BitSize, 64));
// Split the constant into 64-bit chunks and calculate the cost for each
// chunk.
int Cost = 0;
for (unsigned ShiftVal = 0; ShiftVal < BitSize; ShiftVal += 64) {
APInt Tmp = ImmVal.ashr(ShiftVal).sextOrTrunc(64);
int64_t Val = Tmp.getSExtValue();
Cost += getIntImmCost(Val);
}
// We need at least one instruction to materialize the constant.
return std::max(1, Cost);
}
int X86TTIImpl::getIntImmCostInst(unsigned Opcode, unsigned Idx, const APInt &Imm,
Type *Ty, TTI::TargetCostKind CostKind) {
assert(Ty->isIntegerTy());
unsigned BitSize = Ty->getPrimitiveSizeInBits();
// There is no cost model for constants with a bit size of 0. Return TCC_Free
// here, so that constant hoisting will ignore this constant.
if (BitSize == 0)
return TTI::TCC_Free;
unsigned ImmIdx = ~0U;
switch (Opcode) {
default:
return TTI::TCC_Free;
case Instruction::GetElementPtr:
// Always hoist the base address of a GetElementPtr. This prevents the
// creation of new constants for every base constant that gets constant
// folded with the offset.
if (Idx == 0)
return 2 * TTI::TCC_Basic;
return TTI::TCC_Free;
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
// immediates here as the normal path expects bit 31 to be sign extended.
if (Idx == 1 && Imm.getBitWidth() == 64 && isUInt<32>(Imm.getZExtValue()))
return TTI::TCC_Free;
ImmIdx = 1;
break;
case Instruction::Add:
case Instruction::Sub:
// For add/sub, we can use the opposite instruction for INT32_MIN.
if (Idx == 1 && Imm.getBitWidth() == 64 && Imm.getZExtValue() == 0x80000000)
return TTI::TCC_Free;
ImmIdx = 1;
break;
case Instruction::UDiv:
case Instruction::SDiv:
case Instruction::URem:
case Instruction::SRem:
// Division by constant is typically expanded later into a different
// instruction sequence. This completely changes the constants.
// Report them as "free" to stop ConstantHoist from marking them as opaque.
return TTI::TCC_Free;
case Instruction::Mul:
case Instruction::Or:
case Instruction::Xor:
ImmIdx = 1;
break;
// Always return TCC_Free for the shift value of a shift instruction.
case Instruction::Shl:
case Instruction::LShr:
case Instruction::AShr:
if (Idx == 1)
return TTI::TCC_Free;
break;
case Instruction::Trunc:
case Instruction::ZExt:
case Instruction::SExt:
case Instruction::IntToPtr:
case Instruction::PtrToInt:
case Instruction::BitCast:
case Instruction::PHI:
case Instruction::Call:
case Instruction::Select:
case Instruction::Ret:
case Instruction::Load:
break;
}
if (Idx == ImmIdx) {
int NumConstants = divideCeil(BitSize, 64);
int Cost = X86TTIImpl::getIntImmCost(Imm, Ty, CostKind);
return (Cost <= NumConstants * TTI::TCC_Basic)
? static_cast<int>(TTI::TCC_Free)
: Cost;
}
return X86TTIImpl::getIntImmCost(Imm, Ty, CostKind);
}
int X86TTIImpl::getIntImmCostIntrin(Intrinsic::ID IID, unsigned Idx,
const APInt &Imm, Type *Ty,
TTI::TargetCostKind CostKind) {
assert(Ty->isIntegerTy());
unsigned BitSize = Ty->getPrimitiveSizeInBits();
// There is no cost model for constants with a bit size of 0. Return TCC_Free
// here, so that constant hoisting will ignore this constant.
if (BitSize == 0)
return TTI::TCC_Free;
switch (IID) {
default:
return TTI::TCC_Free;
case Intrinsic::sadd_with_overflow:
case Intrinsic::uadd_with_overflow:
case Intrinsic::ssub_with_overflow:
case Intrinsic::usub_with_overflow:
case Intrinsic::smul_with_overflow:
case Intrinsic::umul_with_overflow:
if ((Idx == 1) && Imm.getBitWidth() <= 64 && isInt<32>(Imm.getSExtValue()))
return TTI::TCC_Free;
break;
case Intrinsic::experimental_stackmap:
if ((Idx < 2) || (Imm.getBitWidth() <= 64 && isInt<64>(Imm.getSExtValue())))
return TTI::TCC_Free;
break;
case Intrinsic::experimental_patchpoint_void:
case Intrinsic::experimental_patchpoint_i64:
if ((Idx < 4) || (Imm.getBitWidth() <= 64 && isInt<64>(Imm.getSExtValue())))
return TTI::TCC_Free;
break;
}
return X86TTIImpl::getIntImmCost(Imm, Ty, CostKind);
}
unsigned
X86TTIImpl::getCFInstrCost(unsigned Opcode, TTI::TargetCostKind CostKind) {
if (CostKind != TTI::TCK_RecipThroughput)
return Opcode == Instruction::PHI ? 0 : 1;
// Branches are assumed to be predicted.
return CostKind == TTI::TCK_RecipThroughput ? 0 : 1;
}
// Return an average cost of Gather / Scatter instruction, maybe improved later
int X86TTIImpl::getGSVectorCost(unsigned Opcode, Type *SrcVTy, const Value *Ptr,
Align Alignment, unsigned AddressSpace) {
assert(isa<VectorType>(SrcVTy) && "Unexpected type in getGSVectorCost");
unsigned VF = cast<FixedVectorType>(SrcVTy)->getNumElements();
// 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 = [](const Value *Ptr, const DataLayout &DL) {
unsigned IndexSize = DL.getPointerSizeInBits();
const GetElementPtrInst *GEP = dyn_cast<GetElementPtrInst>(Ptr);
if (IndexSize < 64 || !GEP)
return IndexSize;
unsigned NumOfVarIndices = 0;
const 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 (auto *IndexVTy = dyn_cast<VectorType>(IndxTy))
IndxTy = IndexVTy->getElementType();
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 = (ST->hasAVX512() && VF >= 16)
? getIndexSizeInBits(Ptr, DL)
: DL.getPointerSizeInBits();
auto *IndexVTy = FixedVectorType::get(
IntegerType::get(SrcVTy->getContext(), 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
auto *SplitSrcTy =
FixedVectorType::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 = (Opcode == Instruction::Load)
? ST->getGatherOverhead()
: ST->getScatterOverhead();
return GSOverhead + VF * getMemoryOpCost(Opcode, SrcVTy->getScalarType(),
MaybeAlign(Alignment), AddressSpace,
TTI::TCK_RecipThroughput);
}
/// 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, Align Alignment,
unsigned AddressSpace) {
unsigned VF = cast<FixedVectorType>(SrcVTy)->getNumElements();
APInt DemandedElts = APInt::getAllOnesValue(VF);
TTI::TargetCostKind CostKind = TTI::TCK_RecipThroughput;
int MaskUnpackCost = 0;
if (VariableMask) {
auto *MaskTy =
FixedVectorType::get(Type::getInt1Ty(SrcVTy->getContext()), VF);
MaskUnpackCost =
getScalarizationOverhead(MaskTy, DemandedElts, false, true);
int ScalarCompareCost =
getCmpSelInstrCost(Instruction::ICmp, Type::getInt1Ty(SrcVTy->getContext()),
nullptr, CostKind);
int BranchCost = getCFInstrCost(Instruction::Br, CostKind);
MaskUnpackCost += VF * (BranchCost + ScalarCompareCost);
}
// The cost of the scalar loads/stores.
int MemoryOpCost = VF * getMemoryOpCost(Opcode, SrcVTy->getScalarType(),
MaybeAlign(Alignment), AddressSpace,
CostKind);
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,
const Value *Ptr, bool VariableMask,
Align Alignment,
TTI::TargetCostKind CostKind,
const Instruction *I = nullptr) {
if (CostKind != TTI::TCK_RecipThroughput)
return 1;
assert(SrcVTy->isVectorTy() && "Unexpected data type for Gather/Scatter");
unsigned VF = cast<FixedVectorType>(SrcVTy)->getNumElements();
PointerType *PtrTy = dyn_cast<PointerType>(Ptr->getType());
if (!PtrTy && Ptr->getType()->isVectorTy())
PtrTy = dyn_cast<PointerType>(
cast<VectorType>(Ptr->getType())->getElementType());
assert(PtrTy && "Unexpected type for Ptr argument");
unsigned AddressSpace = PtrTy->getAddressSpace();
bool Scalarize = false;
if ((Opcode == Instruction::Load &&
!isLegalMaskedGather(SrcVTy, Align(Alignment))) ||
(Opcode == Instruction::Store &&
!isLegalMaskedScatter(SrcVTy, Align(Alignment))))
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 (ST->hasAVX512() && (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::isLSRCostLess(TargetTransformInfo::LSRCost &C1,
TargetTransformInfo::LSRCost &C2) {
// X86 specific here are "instruction number 1st priority".
return std::tie(C1.Insns, C1.NumRegs, C1.AddRecCost,
C1.NumIVMuls, C1.NumBaseAdds,
C1.ScaleCost, C1.ImmCost, C1.SetupCost) <
std::tie(C2.Insns, C2.NumRegs, C2.AddRecCost,
C2.NumIVMuls, C2.NumBaseAdds,
C2.ScaleCost, C2.ImmCost, C2.SetupCost);
}
bool X86TTIImpl::canMacroFuseCmp() {
return ST->hasMacroFusion() || ST->hasBranchFusion();
}
bool X86TTIImpl::isLegalMaskedLoad(Type *DataTy, Align Alignment) {
if (!ST->hasAVX())
return false;
// The backend can't handle a single element vector.
if (isa<VectorType>(DataTy) &&
cast<FixedVectorType>(DataTy)->getNumElements() == 1)
return false;
Type *ScalarTy = DataTy->getScalarType();
if (ScalarTy->isPointerTy())
return true;
if (ScalarTy->isFloatTy() || ScalarTy->isDoubleTy())
return true;
if (!ScalarTy->isIntegerTy())
return false;
unsigned IntWidth = ScalarTy->getIntegerBitWidth();
return IntWidth == 32 || IntWidth == 64 ||
((IntWidth == 8 || IntWidth == 16) && ST->hasBWI());
}
bool X86TTIImpl::isLegalMaskedStore(Type *DataType, Align Alignment) {
return isLegalMaskedLoad(DataType, Alignment);
}
bool X86TTIImpl::isLegalNTLoad(Type *DataType, Align Alignment) {
unsigned DataSize = DL.getTypeStoreSize(DataType);
// The only supported nontemporal loads are for aligned vectors of 16 or 32
// bytes. Note that 32-byte nontemporal vector loads are supported by AVX2
// (the equivalent stores only require AVX).
if (Alignment >= DataSize && (DataSize == 16 || DataSize == 32))
return DataSize == 16 ? ST->hasSSE1() : ST->hasAVX2();
return false;
}
bool X86TTIImpl::isLegalNTStore(Type *DataType, Align Alignment) {
unsigned DataSize = DL.getTypeStoreSize(DataType);
// SSE4A supports nontemporal stores of float and double at arbitrary
// alignment.
if (ST->hasSSE4A() && (DataType->isFloatTy() || DataType->isDoubleTy()))
return true;
// Besides the SSE4A subtarget exception above, only aligned stores are
// available nontemporaly on any other subtarget. And only stores with a size
// of 4..32 bytes (powers of 2, only) are permitted.
if (Alignment < DataSize || DataSize < 4 || DataSize > 32 ||
!isPowerOf2_32(DataSize))
return false;
// 32-byte vector nontemporal stores are supported by AVX (the equivalent
// loads require AVX2).
if (DataSize == 32)
return ST->hasAVX();
else if (DataSize == 16)
return ST->hasSSE1();
return true;
}
bool X86TTIImpl::isLegalMaskedExpandLoad(Type *DataTy) {
if (!isa<VectorType>(DataTy))
return false;
if (!ST->hasAVX512())
return false;
// The backend can't handle a single element vector.
if (cast<FixedVectorType>(DataTy)->getNumElements() == 1)
return false;
Type *ScalarTy = cast<VectorType>(DataTy)->getElementType();
if (ScalarTy->isFloatTy() || ScalarTy->isDoubleTy())
return true;
if (!ScalarTy->isIntegerTy())
return false;
unsigned IntWidth = ScalarTy->getIntegerBitWidth();
return IntWidth == 32 || IntWidth == 64 ||
((IntWidth == 8 || IntWidth == 16) && ST->hasVBMI2());
}
bool X86TTIImpl::isLegalMaskedCompressStore(Type *DataTy) {
return isLegalMaskedExpandLoad(DataTy);
}
bool X86TTIImpl::isLegalMaskedGather(Type *DataTy, Align Alignment) {
// Some CPUs have better gather performance than others.
// TODO: Remove the explicit ST->hasAVX512()?, That would mean we would only
// enable gather with a -march.
if (!(ST->hasAVX512() || (ST->hasFastGather() && ST->hasAVX2())))
return false;
// This function is called now in two cases: from the Loop Vectorizer
// and from the Scalarizer.
// When the Loop Vectorizer asks about legality of the feature,
// the vectorization factor is not calculated yet. The Loop Vectorizer
// sends a scalar type and the decision is based on the width of the
// scalar element.
// Later on, the cost model will estimate usage this intrinsic based on
// the vector type.
// The Scalarizer asks again about legality. It sends a vector type.
// In this case we can reject non-power-of-2 vectors.
// We also reject single element vectors as the type legalizer can't
// scalarize it.
if (auto *DataVTy = dyn_cast<FixedVectorType>(DataTy)) {
unsigned NumElts = DataVTy->getNumElements();
if (NumElts == 1 || !isPowerOf2_32(NumElts))
return false;
}
Type *ScalarTy = DataTy->getScalarType();
if (ScalarTy->isPointerTy())
return true;
if (ScalarTy->isFloatTy() || ScalarTy->isDoubleTy())
return true;
if (!ScalarTy->isIntegerTy())
return false;
unsigned IntWidth = ScalarTy->getIntegerBitWidth();
return IntWidth == 32 || IntWidth == 64;
}
bool X86TTIImpl::isLegalMaskedScatter(Type *DataType, Align Alignment) {
// AVX2 doesn't support scatter
if (!ST->hasAVX512())
return false;
return isLegalMaskedGather(DataType, Alignment);
}
bool X86TTIImpl::hasDivRemOp(Type *DataType, bool IsSigned) {
EVT VT = TLI->getValueType(DL, DataType);
return TLI->isOperationLegal(IsSigned ? ISD::SDIVREM : ISD::UDIVREM, VT);
}
bool X86TTIImpl::isFCmpOrdCheaperThanFCmpZero(Type *Ty) {
return false;
}
bool X86TTIImpl::areInlineCompatible(const Function *Caller,
const Function *Callee) const {
const TargetMachine &TM = getTLI()->getTargetMachine();
// Work this as a subsetting of subtarget features.
const FeatureBitset &CallerBits =
TM.getSubtargetImpl(*Caller)->getFeatureBits();
const FeatureBitset &CalleeBits =
TM.getSubtargetImpl(*Callee)->getFeatureBits();
FeatureBitset RealCallerBits = CallerBits & ~InlineFeatureIgnoreList;
FeatureBitset RealCalleeBits = CalleeBits & ~InlineFeatureIgnoreList;
return (RealCallerBits & RealCalleeBits) == RealCalleeBits;
}
bool X86TTIImpl::areFunctionArgsABICompatible(
const Function *Caller, const Function *Callee,
SmallPtrSetImpl<Argument *> &Args) const {
if (!BaseT::areFunctionArgsABICompatible(Caller, Callee, Args))
return false;
// If we get here, we know the target features match. If one function
// considers 512-bit vectors legal and the other does not, consider them
// incompatible.
const TargetMachine &TM = getTLI()->getTargetMachine();
if (TM.getSubtarget<X86Subtarget>(*Caller).useAVX512Regs() ==
TM.getSubtarget<X86Subtarget>(*Callee).useAVX512Regs())
return true;
// Consider the arguments compatible if they aren't vectors or aggregates.
// FIXME: Look at the size of vectors.
// FIXME: Look at the element types of aggregates to see if there are vectors.
// FIXME: The API of this function seems intended to allow arguments
// to be removed from the set, but the caller doesn't check if the set
// becomes empty so that may not work in practice.
return llvm::none_of(Args, [](Argument *A) {
auto *EltTy = cast<PointerType>(A->getType())->getElementType();
return EltTy->isVectorTy() || EltTy->isAggregateType();
});
}
X86TTIImpl::TTI::MemCmpExpansionOptions
X86TTIImpl::enableMemCmpExpansion(bool OptSize, bool IsZeroCmp) const {
TTI::MemCmpExpansionOptions Options;
Options.MaxNumLoads = TLI->getMaxExpandSizeMemcmp(OptSize);
Options.NumLoadsPerBlock = 2;
// All GPR and vector loads can be unaligned.
Options.AllowOverlappingLoads = true;
if (IsZeroCmp) {
// Only enable vector loads for equality comparison. Right now the vector
// version is not as fast for three way compare (see #33329).
const unsigned PreferredWidth = ST->getPreferVectorWidth();
if (PreferredWidth >= 512 && ST->hasAVX512()) Options.LoadSizes.push_back(64);
if (PreferredWidth >= 256 && ST->hasAVX()) Options.LoadSizes.push_back(32);
if (PreferredWidth >= 128 && ST->hasSSE2()) Options.LoadSizes.push_back(16);
}
if (ST->is64Bit()) {
Options.LoadSizes.push_back(8);
}
Options.LoadSizes.push_back(4);
Options.LoadSizes.push_back(2);
Options.LoadSizes.push_back(1);
return Options;
}
bool X86TTIImpl::enableInterleavedAccessVectorization() {
// TODO: We expect this to be beneficial regardless of arch,
// but there are currently some unexplained performance artifacts on Atom.
// As a temporary solution, disable on Atom.
return !(ST->isAtom());
}
// Get estimation for interleaved load/store operations for AVX2.
// \p Factor is the interleaved-access factor (stride) - number of
// (interleaved) elements in the group.
// \p Indices contains the indices for a strided load: when the
// interleaved load has gaps they indicate which elements are used.
// If Indices is empty (or if the number of indices is equal to the size
// of the interleaved-access as given in \p Factor) the access has no gaps.
//
// As opposed to AVX-512, AVX2 does not have generic shuffles that allow
// computing the cost using a generic formula as a function of generic
// shuffles. We therefore use a lookup table instead, filled according to
// the instruction sequences that codegen currently generates.
int X86TTIImpl::getInterleavedMemoryOpCostAVX2(
unsigned Opcode, FixedVectorType *VecTy, unsigned Factor,
ArrayRef<unsigned> Indices, Align Alignment, unsigned AddressSpace,
TTI::TargetCostKind CostKind, bool UseMaskForCond, bool UseMaskForGaps) {
if (UseMaskForCond || UseMaskForGaps)
return BaseT::getInterleavedMemoryOpCost(Opcode, VecTy, Factor, Indices,
Alignment, AddressSpace, CostKind,
UseMaskForCond, UseMaskForGaps);
// We currently Support only fully-interleaved groups, with no gaps.
// TODO: Support also strided loads (interleaved-groups with gaps).
if (Indices.size() && Indices.size() != Factor)
return BaseT::getInterleavedMemoryOpCost(Opcode, VecTy, Factor, Indices,
Alignment, AddressSpace,
CostKind);
// VecTy for interleave memop is <VF*Factor x Elt>.
// So, for VF=4, Interleave Factor = 3, Element type = i32 we have
// VecTy = <12 x i32>.
MVT LegalVT = getTLI()->getTypeLegalizationCost(DL, VecTy).second;
// This function can be called with VecTy=<6xi128>, Factor=3, in which case
// the VF=2, while v2i128 is an unsupported MVT vector type
// (see MachineValueType.h::getVectorVT()).
if (!LegalVT.isVector())
return BaseT::getInterleavedMemoryOpCost(Opcode, VecTy, Factor, Indices,
Alignment, AddressSpace,
CostKind);
unsigned VF = VecTy->getNumElements() / Factor;
Type *ScalarTy = VecTy->getElementType();
// Calculate the number of memory operations (NumOfMemOps), required
// for load/store the VecTy.
unsigned VecTySize = DL.getTypeStoreSize(VecTy);
unsigned LegalVTSize = LegalVT.getStoreSize();
unsigned NumOfMemOps = (VecTySize + LegalVTSize - 1) / LegalVTSize;
// Get the cost of one memory operation.
auto *SingleMemOpTy = FixedVectorType::get(VecTy->getElementType(),
LegalVT.getVectorNumElements());
unsigned MemOpCost = getMemoryOpCost(Opcode, SingleMemOpTy,
MaybeAlign(Alignment), AddressSpace,
CostKind);
auto *VT = FixedVectorType::get(ScalarTy, VF);
EVT ETy = TLI->getValueType(DL, VT);
if (!ETy.isSimple())
return BaseT::getInterleavedMemoryOpCost(Opcode, VecTy, Factor, Indices,
Alignment, AddressSpace,
CostKind);
// TODO: Complete for other data-types and strides.
// Each combination of Stride, ElementTy and VF results in a different
// sequence; The cost tables are therefore accessed with:
// Factor (stride) and VectorType=VFxElemType.
// The Cost accounts only for the shuffle sequence;
// The cost of the loads/stores is accounted for separately.
//
static const CostTblEntry AVX2InterleavedLoadTbl[] = {
{ 2, MVT::v4i64, 6 }, //(load 8i64 and) deinterleave into 2 x 4i64
{ 2, MVT::v4f64, 6 }, //(load 8f64 and) deinterleave into 2 x 4f64
{ 3, MVT::v2i8, 10 }, //(load 6i8 and) deinterleave into 3 x 2i8
{ 3, MVT::v4i8, 4 }, //(load 12i8 and) deinterleave into 3 x 4i8
{ 3, MVT::v8i8, 9 }, //(load 24i8 and) deinterleave into 3 x 8i8
{ 3, MVT::v16i8, 11}, //(load 48i8 and) deinterleave into 3 x 16i8
{ 3, MVT::v32i8, 13}, //(load 96i8 and) deinterleave into 3 x 32i8
{ 3, MVT::v8f32, 17 }, //(load 24f32 and)deinterleave into 3 x 8f32
{ 4, MVT::v2i8, 12 }, //(load 8i8 and) deinterleave into 4 x 2i8
{ 4, MVT::v4i8, 4 }, //(load 16i8 and) deinterleave into 4 x 4i8
{ 4, MVT::v8i8, 20 }, //(load 32i8 and) deinterleave into 4 x 8i8
{ 4, MVT::v16i8, 39 }, //(load 64i8 and) deinterleave into 4 x 16i8
{ 4, MVT::v32i8, 80 }, //(load 128i8 and) deinterleave into 4 x 32i8
{ 8, MVT::v8f32, 40 } //(load 64f32 and)deinterleave into 8 x 8f32
};
static const CostTblEntry AVX2InterleavedStoreTbl[] = {
{ 2, MVT::v4i64, 6 }, //interleave into 2 x 4i64 into 8i64 (and store)
{ 2, MVT::v4f64, 6 }, //interleave into 2 x 4f64 into 8f64 (and store)
{ 3, MVT::v2i8, 7 }, //interleave 3 x 2i8 into 6i8 (and store)
{ 3, MVT::v4i8, 8 }, //interleave 3 x 4i8 into 12i8 (and store)
{ 3, MVT::v8i8, 11 }, //interleave 3 x 8i8 into 24i8 (and store)
{ 3, MVT::v16i8, 11 }, //interleave 3 x 16i8 into 48i8 (and store)
{ 3, MVT::v32i8, 13 }, //interleave 3 x 32i8 into 96i8 (and store)
{ 4, MVT::v2i8, 12 }, //interleave 4 x 2i8 into 8i8 (and store)
{ 4, MVT::v4i8, 9 }, //interleave 4 x 4i8 into 16i8 (and store)
{ 4, MVT::v8i8, 10 }, //interleave 4 x 8i8 into 32i8 (and store)
{ 4, MVT::v16i8, 10 }, //interleave 4 x 16i8 into 64i8 (and store)
{ 4, MVT::v32i8, 12 } //interleave 4 x 32i8 into 128i8 (and store)
};
if (Opcode == Instruction::Load) {
if (const auto *Entry =
CostTableLookup(AVX2InterleavedLoadTbl, Factor, ETy.getSimpleVT()))
return NumOfMemOps * MemOpCost + Entry->Cost;
} else {
assert(Opcode == Instruction::Store &&
"Expected Store Instruction at this point");
if (const auto *Entry =
CostTableLookup(AVX2InterleavedStoreTbl, Factor, ETy.getSimpleVT()))
return NumOfMemOps * MemOpCost + Entry->Cost;
}
return BaseT::getInterleavedMemoryOpCost(Opcode, VecTy, Factor, Indices,
Alignment, AddressSpace, CostKind);
}
// Get estimation for interleaved load/store operations and strided load.
// \p Indices contains indices for strided load.
// \p Factor - the factor of interleaving.
// AVX-512 provides 3-src shuffles that significantly reduces the cost.
int X86TTIImpl::getInterleavedMemoryOpCostAVX512(
unsigned Opcode, FixedVectorType *VecTy, unsigned Factor,
ArrayRef<unsigned> Indices, Align Alignment, unsigned AddressSpace,
TTI::TargetCostKind CostKind, bool UseMaskForCond, bool UseMaskForGaps) {
if (UseMaskForCond || UseMaskForGaps)
return BaseT::getInterleavedMemoryOpCost(Opcode, VecTy, Factor, Indices,
Alignment, AddressSpace, CostKind,
UseMaskForCond, UseMaskForGaps);
// VecTy for interleave memop is <VF*Factor x Elt>.
// So, for VF=4, Interleave Factor = 3, Element type = i32 we have
// VecTy = <12 x i32>.
// Calculate the number of memory operations (NumOfMemOps), required
// for load/store the VecTy.
MVT LegalVT = getTLI()->getTypeLegalizationCost(DL, VecTy).second;
unsigned VecTySize = DL.getTypeStoreSize(VecTy);
unsigned LegalVTSize = LegalVT.getStoreSize();
unsigned NumOfMemOps = (VecTySize + LegalVTSize - 1) / LegalVTSize;
// Get the cost of one memory operation.
auto *SingleMemOpTy = FixedVectorType::get(VecTy->getElementType(),
LegalVT.getVectorNumElements());
unsigned MemOpCost = getMemoryOpCost(Opcode, SingleMemOpTy,
MaybeAlign(Alignment), AddressSpace,
CostKind);
unsigned VF = VecTy->getNumElements() / Factor;
MVT VT = MVT::getVectorVT(MVT::getVT(VecTy->getScalarType()), VF);
if (Opcode == Instruction::Load) {
// The tables (AVX512InterleavedLoadTbl and AVX512InterleavedStoreTbl)
// contain the cost of the optimized shuffle sequence that the
// X86InterleavedAccess pass will generate.
// The cost of loads and stores are computed separately from the table.
// X86InterleavedAccess support only the following interleaved-access group.
static const CostTblEntry AVX512InterleavedLoadTbl[] = {
{3, MVT::v16i8, 12}, //(load 48i8 and) deinterleave into 3 x 16i8
{3, MVT::v32i8, 14}, //(load 96i8 and) deinterleave into 3 x 32i8
{3, MVT::v64i8, 22}, //(load 96i8 and) deinterleave into 3 x 32i8
};
if (const auto *Entry =
CostTableLookup(AVX512InterleavedLoadTbl, Factor, VT))
return NumOfMemOps * MemOpCost + Entry->Cost;
//If an entry does not exist, fallback to the default implementation.
// Kind of shuffle depends on number of loaded values.
// If we load the entire data in one register, we can use a 1-src shuffle.
// Otherwise, we'll merge 2 sources in each operation.
TTI::ShuffleKind ShuffleKind =
(NumOfMemOps > 1) ? TTI::SK_PermuteTwoSrc : TTI::SK_PermuteSingleSrc;
unsigned ShuffleCost =
getShuffleCost(ShuffleKind, SingleMemOpTy, 0, nullptr);
unsigned NumOfLoadsInInterleaveGrp =
Indices.size() ? Indices.size() : Factor;
auto *ResultTy = FixedVectorType::get(VecTy->getElementType(),
VecTy->getNumElements() / Factor);
unsigned NumOfResults =
getTLI()->getTypeLegalizationCost(DL, ResultTy).first *
NumOfLoadsInInterleaveGrp;
// About a half of the loads may be folded in shuffles when we have only
// one result. If we have more than one result, we do not fold loads at all.
unsigned NumOfUnfoldedLoads =
NumOfResults > 1 ? NumOfMemOps : NumOfMemOps / 2;
// Get a number of shuffle operations per result.
unsigned NumOfShufflesPerResult =
std::max((unsigned)1, (unsigned)(NumOfMemOps - 1));
// The SK_MergeTwoSrc shuffle clobbers one of src operands.
// When we have more than one destination, we need additional instructions
// to keep sources.
unsigned NumOfMoves = 0;
if (NumOfResults > 1 && ShuffleKind == TTI::SK_PermuteTwoSrc)
NumOfMoves = NumOfResults * NumOfShufflesPerResult / 2;
int Cost = NumOfResults * NumOfShufflesPerResult * ShuffleCost +
NumOfUnfoldedLoads * MemOpCost + NumOfMoves;
return Cost;
}
// Store.
assert(Opcode == Instruction::Store &&
"Expected Store Instruction at this point");
// X86InterleavedAccess support only the following interleaved-access group.
static const CostTblEntry AVX512InterleavedStoreTbl[] = {
{3, MVT::v16i8, 12}, // interleave 3 x 16i8 into 48i8 (and store)
{3, MVT::v32i8, 14}, // interleave 3 x 32i8 into 96i8 (and store)
{3, MVT::v64i8, 26}, // interleave 3 x 64i8 into 96i8 (and store)
{4, MVT::v8i8, 10}, // interleave 4 x 8i8 into 32i8 (and store)
{4, MVT::v16i8, 11}, // interleave 4 x 16i8 into 64i8 (and store)
{4, MVT::v32i8, 14}, // interleave 4 x 32i8 into 128i8 (and store)
{4, MVT::v64i8, 24} // interleave 4 x 32i8 into 256i8 (and store)
};
if (const auto *Entry =
CostTableLookup(AVX512InterleavedStoreTbl, Factor, VT))
return NumOfMemOps * MemOpCost + Entry->Cost;
//If an entry does not exist, fallback to the default implementation.
// There is no strided stores meanwhile. And store can't be folded in
// shuffle.
unsigned NumOfSources = Factor; // The number of values to be merged.
unsigned ShuffleCost =
getShuffleCost(TTI::SK_PermuteTwoSrc, SingleMemOpTy, 0, nullptr);
unsigned NumOfShufflesPerStore = NumOfSources - 1;
// The SK_MergeTwoSrc shuffle clobbers one of src operands.
// We need additional instructions to keep sources.
unsigned NumOfMoves = NumOfMemOps * NumOfShufflesPerStore / 2;
int Cost = NumOfMemOps * (MemOpCost + NumOfShufflesPerStore * ShuffleCost) +
NumOfMoves;
return Cost;
}
int X86TTIImpl::getInterleavedMemoryOpCost(
unsigned Opcode, Type *VecTy, unsigned Factor, ArrayRef<unsigned> Indices,
Align Alignment, unsigned AddressSpace, TTI::TargetCostKind CostKind,
bool UseMaskForCond, bool UseMaskForGaps) {
auto isSupportedOnAVX512 = [](Type *VecTy, bool HasBW) {
Type *EltTy = cast<VectorType>(VecTy)->getElementType();
if (EltTy->isFloatTy() || EltTy->isDoubleTy() || EltTy->isIntegerTy(64) ||
EltTy->isIntegerTy(32) || EltTy->isPointerTy())
return true;
if (EltTy->isIntegerTy(16) || EltTy->isIntegerTy(8))
return HasBW;
return false;
};
if (ST->hasAVX512() && isSupportedOnAVX512(VecTy, ST->hasBWI()))
return getInterleavedMemoryOpCostAVX512(
Opcode, cast<FixedVectorType>(VecTy), Factor, Indices, Alignment,
AddressSpace, CostKind, UseMaskForCond, UseMaskForGaps);
if (ST->hasAVX2())
return getInterleavedMemoryOpCostAVX2(
Opcode, cast<FixedVectorType>(VecTy), Factor, Indices, Alignment,
AddressSpace, CostKind, UseMaskForCond, UseMaskForGaps);
return BaseT::getInterleavedMemoryOpCost(Opcode, VecTy, Factor, Indices,
Alignment, AddressSpace, CostKind,
UseMaskForCond, UseMaskForGaps);
}