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1899e92869
This tries to improve the accuracy of extract/insert element costs by accounting for subvector extraction/insertion for >128-bit vectors and the shuffling of elements to/from the 0'th index. It also adds INSERTPS for f32 types and PINSR/PEXTR costs for integer types (at the moment we assume the same cost as MOVD/MOVQ - which isn't always true). Differential Revision: https://reviews.llvm.org/D74976
3868 lines
159 KiB
C++
3868 lines
159 KiB
C++
//===-- X86TargetTransformInfo.cpp - X86 specific TTI pass ----------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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/// \file
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/// This file implements a TargetTransformInfo analysis pass specific to the
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/// X86 target machine. It uses the target's detailed information to provide
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/// more precise answers to certain TTI queries, while letting the target
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/// independent and default TTI implementations handle the rest.
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///
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//===----------------------------------------------------------------------===//
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/// About Cost Model numbers used below it's necessary to say the following:
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/// the numbers correspond to some "generic" X86 CPU instead of usage of
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/// concrete CPU model. Usually the numbers correspond to CPU where the feature
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/// apeared at the first time. For example, if we do Subtarget.hasSSE42() in
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/// the lookups below the cost is based on Nehalem as that was the first CPU
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/// to support that feature level and thus has most likely the worst case cost.
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/// Some examples of other technologies/CPUs:
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/// SSE 3 - Pentium4 / Athlon64
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/// SSE 4.1 - Penryn
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/// SSE 4.2 - Nehalem
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/// AVX - Sandy Bridge
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/// AVX2 - Haswell
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/// AVX-512 - Xeon Phi / Skylake
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/// And some examples of instruction target dependent costs (latency)
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/// divss sqrtss rsqrtss
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/// AMD K7 11-16 19 3
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/// Piledriver 9-24 13-15 5
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/// Jaguar 14 16 2
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/// Pentium II,III 18 30 2
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/// Nehalem 7-14 7-18 3
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/// Haswell 10-13 11 5
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/// TODO: Develop and implement the target dependent cost model and
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/// specialize cost numbers for different Cost Model Targets such as throughput,
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/// code size, latency and uop count.
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//===----------------------------------------------------------------------===//
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#include "X86TargetTransformInfo.h"
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#include "llvm/Analysis/TargetTransformInfo.h"
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#include "llvm/CodeGen/BasicTTIImpl.h"
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#include "llvm/CodeGen/CostTable.h"
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#include "llvm/CodeGen/TargetLowering.h"
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#include "llvm/IR/IntrinsicInst.h"
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#include "llvm/Support/Debug.h"
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using namespace llvm;
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#define DEBUG_TYPE "x86tti"
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//===----------------------------------------------------------------------===//
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//
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// X86 cost model.
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//
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//===----------------------------------------------------------------------===//
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TargetTransformInfo::PopcntSupportKind
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X86TTIImpl::getPopcntSupport(unsigned TyWidth) {
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assert(isPowerOf2_32(TyWidth) && "Ty width must be power of 2");
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// TODO: Currently the __builtin_popcount() implementation using SSE3
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// instructions is inefficient. Once the problem is fixed, we should
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// call ST->hasSSE3() instead of ST->hasPOPCNT().
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return ST->hasPOPCNT() ? TTI::PSK_FastHardware : TTI::PSK_Software;
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}
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llvm::Optional<unsigned> X86TTIImpl::getCacheSize(
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TargetTransformInfo::CacheLevel Level) const {
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switch (Level) {
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case TargetTransformInfo::CacheLevel::L1D:
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// - Penryn
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// - Nehalem
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// - Westmere
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// - Sandy Bridge
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// - Ivy Bridge
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// - Haswell
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// - Broadwell
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// - Skylake
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// - Kabylake
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return 32 * 1024; // 32 KByte
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case TargetTransformInfo::CacheLevel::L2D:
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// - Penryn
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// - Nehalem
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// - Westmere
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// - Sandy Bridge
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// - Ivy Bridge
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// - Haswell
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// - Broadwell
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// - Skylake
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// - Kabylake
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return 256 * 1024; // 256 KByte
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}
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llvm_unreachable("Unknown TargetTransformInfo::CacheLevel");
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}
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llvm::Optional<unsigned> X86TTIImpl::getCacheAssociativity(
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TargetTransformInfo::CacheLevel Level) const {
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// - Penryn
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// - Nehalem
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// - Westmere
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// - Sandy Bridge
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// - Ivy Bridge
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// - Haswell
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// - Broadwell
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// - Skylake
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// - Kabylake
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switch (Level) {
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case TargetTransformInfo::CacheLevel::L1D:
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LLVM_FALLTHROUGH;
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case TargetTransformInfo::CacheLevel::L2D:
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return 8;
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}
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llvm_unreachable("Unknown TargetTransformInfo::CacheLevel");
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}
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unsigned X86TTIImpl::getNumberOfRegisters(unsigned ClassID) const {
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bool Vector = (ClassID == 1);
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if (Vector && !ST->hasSSE1())
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return 0;
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if (ST->is64Bit()) {
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if (Vector && ST->hasAVX512())
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return 32;
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return 16;
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}
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return 8;
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}
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unsigned X86TTIImpl::getRegisterBitWidth(bool Vector) const {
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unsigned PreferVectorWidth = ST->getPreferVectorWidth();
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if (Vector) {
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if (ST->hasAVX512() && PreferVectorWidth >= 512)
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return 512;
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if (ST->hasAVX() && PreferVectorWidth >= 256)
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return 256;
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if (ST->hasSSE1() && PreferVectorWidth >= 128)
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return 128;
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return 0;
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}
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if (ST->is64Bit())
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return 64;
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return 32;
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}
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unsigned X86TTIImpl::getLoadStoreVecRegBitWidth(unsigned) const {
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return getRegisterBitWidth(true);
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}
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unsigned X86TTIImpl::getMaxInterleaveFactor(unsigned VF) {
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// If the loop will not be vectorized, don't interleave the loop.
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// Let regular unroll to unroll the loop, which saves the overflow
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// check and memory check cost.
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if (VF == 1)
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return 1;
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if (ST->isAtom())
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return 1;
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// Sandybridge and Haswell have multiple execution ports and pipelined
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// vector units.
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if (ST->hasAVX())
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return 4;
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return 2;
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}
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int X86TTIImpl::getArithmeticInstrCost(unsigned Opcode, Type *Ty,
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TTI::OperandValueKind Op1Info,
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TTI::OperandValueKind Op2Info,
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TTI::OperandValueProperties Opd1PropInfo,
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TTI::OperandValueProperties Opd2PropInfo,
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ArrayRef<const Value *> Args,
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const Instruction *CxtI) {
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// Legalize the type.
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std::pair<int, MVT> LT = TLI->getTypeLegalizationCost(DL, Ty);
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int ISD = TLI->InstructionOpcodeToISD(Opcode);
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assert(ISD && "Invalid opcode");
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static const CostTblEntry GLMCostTable[] = {
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{ ISD::FDIV, MVT::f32, 18 }, // divss
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{ ISD::FDIV, MVT::v4f32, 35 }, // divps
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{ ISD::FDIV, MVT::f64, 33 }, // divsd
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{ ISD::FDIV, MVT::v2f64, 65 }, // divpd
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};
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if (ST->useGLMDivSqrtCosts())
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if (const auto *Entry = CostTableLookup(GLMCostTable, ISD,
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LT.second))
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return LT.first * Entry->Cost;
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static const CostTblEntry SLMCostTable[] = {
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{ ISD::MUL, MVT::v4i32, 11 }, // pmulld
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{ ISD::MUL, MVT::v8i16, 2 }, // pmullw
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{ ISD::MUL, MVT::v16i8, 14 }, // extend/pmullw/trunc sequence.
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{ ISD::FMUL, MVT::f64, 2 }, // mulsd
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{ ISD::FMUL, MVT::v2f64, 4 }, // mulpd
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{ ISD::FMUL, MVT::v4f32, 2 }, // mulps
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{ ISD::FDIV, MVT::f32, 17 }, // divss
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{ ISD::FDIV, MVT::v4f32, 39 }, // divps
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{ ISD::FDIV, MVT::f64, 32 }, // divsd
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{ ISD::FDIV, MVT::v2f64, 69 }, // divpd
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{ ISD::FADD, MVT::v2f64, 2 }, // addpd
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{ ISD::FSUB, MVT::v2f64, 2 }, // subpd
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// v2i64/v4i64 mul is custom lowered as a series of long:
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// multiplies(3), shifts(3) and adds(2)
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// slm muldq version throughput is 2 and addq throughput 4
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// thus: 3X2 (muldq throughput) + 3X1 (shift throughput) +
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// 3X4 (addq throughput) = 17
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{ ISD::MUL, MVT::v2i64, 17 },
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// slm addq\subq throughput is 4
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{ ISD::ADD, MVT::v2i64, 4 },
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{ ISD::SUB, MVT::v2i64, 4 },
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};
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if (ST->isSLM()) {
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if (Args.size() == 2 && ISD == ISD::MUL && LT.second == MVT::v4i32) {
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// Check if the operands can be shrinked into a smaller datatype.
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bool Op1Signed = false;
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unsigned Op1MinSize = BaseT::minRequiredElementSize(Args[0], Op1Signed);
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bool Op2Signed = false;
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unsigned Op2MinSize = BaseT::minRequiredElementSize(Args[1], Op2Signed);
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bool signedMode = Op1Signed | Op2Signed;
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unsigned OpMinSize = std::max(Op1MinSize, Op2MinSize);
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if (OpMinSize <= 7)
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return LT.first * 3; // pmullw/sext
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if (!signedMode && OpMinSize <= 8)
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return LT.first * 3; // pmullw/zext
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if (OpMinSize <= 15)
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return LT.first * 5; // pmullw/pmulhw/pshuf
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if (!signedMode && OpMinSize <= 16)
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return LT.first * 5; // pmullw/pmulhw/pshuf
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}
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if (const auto *Entry = CostTableLookup(SLMCostTable, ISD,
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LT.second)) {
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return LT.first * Entry->Cost;
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}
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}
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if ((ISD == ISD::SDIV || ISD == ISD::SREM || ISD == ISD::UDIV ||
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ISD == ISD::UREM) &&
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(Op2Info == TargetTransformInfo::OK_UniformConstantValue ||
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Op2Info == TargetTransformInfo::OK_NonUniformConstantValue) &&
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Opd2PropInfo == TargetTransformInfo::OP_PowerOf2) {
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if (ISD == ISD::SDIV || ISD == ISD::SREM) {
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// On X86, vector signed division by constants power-of-two are
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// normally expanded to the sequence SRA + SRL + ADD + SRA.
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// The OperandValue properties may not be the same as that of the previous
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// operation; conservatively assume OP_None.
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int Cost =
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2 * getArithmeticInstrCost(Instruction::AShr, Ty, Op1Info, Op2Info,
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TargetTransformInfo::OP_None,
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TargetTransformInfo::OP_None);
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Cost += getArithmeticInstrCost(Instruction::LShr, Ty, Op1Info, Op2Info,
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TargetTransformInfo::OP_None,
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TargetTransformInfo::OP_None);
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Cost += getArithmeticInstrCost(Instruction::Add, Ty, Op1Info, Op2Info,
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TargetTransformInfo::OP_None,
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TargetTransformInfo::OP_None);
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if (ISD == ISD::SREM) {
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// For SREM: (X % C) is the equivalent of (X - (X/C)*C)
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Cost += getArithmeticInstrCost(Instruction::Mul, Ty, Op1Info, Op2Info);
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Cost += getArithmeticInstrCost(Instruction::Sub, Ty, Op1Info, Op2Info);
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}
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return Cost;
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}
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// Vector unsigned division/remainder will be simplified to shifts/masks.
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if (ISD == ISD::UDIV)
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return getArithmeticInstrCost(Instruction::LShr, Ty, Op1Info, Op2Info,
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TargetTransformInfo::OP_None,
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TargetTransformInfo::OP_None);
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else // UREM
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return getArithmeticInstrCost(Instruction::And, Ty, Op1Info, Op2Info,
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TargetTransformInfo::OP_None,
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TargetTransformInfo::OP_None);
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}
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static const CostTblEntry AVX512BWUniformConstCostTable[] = {
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{ ISD::SHL, MVT::v64i8, 2 }, // psllw + pand.
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{ ISD::SRL, MVT::v64i8, 2 }, // psrlw + pand.
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{ ISD::SRA, MVT::v64i8, 4 }, // psrlw, pand, pxor, psubb.
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};
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if (Op2Info == TargetTransformInfo::OK_UniformConstantValue &&
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ST->hasBWI()) {
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if (const auto *Entry = CostTableLookup(AVX512BWUniformConstCostTable, ISD,
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LT.second))
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return LT.first * Entry->Cost;
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}
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static const CostTblEntry AVX512UniformConstCostTable[] = {
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{ ISD::SRA, MVT::v2i64, 1 },
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{ ISD::SRA, MVT::v4i64, 1 },
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{ ISD::SRA, MVT::v8i64, 1 },
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};
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if (Op2Info == TargetTransformInfo::OK_UniformConstantValue &&
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ST->hasAVX512()) {
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if (const auto *Entry = CostTableLookup(AVX512UniformConstCostTable, ISD,
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LT.second))
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return LT.first * Entry->Cost;
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}
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static const CostTblEntry AVX2UniformConstCostTable[] = {
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{ ISD::SHL, MVT::v32i8, 2 }, // psllw + pand.
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{ ISD::SRL, MVT::v32i8, 2 }, // psrlw + pand.
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{ ISD::SRA, MVT::v32i8, 4 }, // psrlw, pand, pxor, psubb.
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{ ISD::SRA, MVT::v4i64, 4 }, // 2 x psrad + shuffle.
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};
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if (Op2Info == TargetTransformInfo::OK_UniformConstantValue &&
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ST->hasAVX2()) {
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if (const auto *Entry = CostTableLookup(AVX2UniformConstCostTable, ISD,
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LT.second))
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return LT.first * Entry->Cost;
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}
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static const CostTblEntry SSE2UniformConstCostTable[] = {
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{ ISD::SHL, MVT::v16i8, 2 }, // psllw + pand.
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{ ISD::SRL, MVT::v16i8, 2 }, // psrlw + pand.
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{ ISD::SRA, MVT::v16i8, 4 }, // psrlw, pand, pxor, psubb.
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{ ISD::SHL, MVT::v32i8, 4+2 }, // 2*(psllw + pand) + split.
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{ ISD::SRL, MVT::v32i8, 4+2 }, // 2*(psrlw + pand) + split.
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{ ISD::SRA, MVT::v32i8, 8+2 }, // 2*(psrlw, pand, pxor, psubb) + split.
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};
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// XOP has faster vXi8 shifts.
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if (Op2Info == TargetTransformInfo::OK_UniformConstantValue &&
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ST->hasSSE2() && !ST->hasXOP()) {
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if (const auto *Entry =
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CostTableLookup(SSE2UniformConstCostTable, ISD, LT.second))
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return LT.first * Entry->Cost;
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}
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static const CostTblEntry AVX512BWConstCostTable[] = {
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{ ISD::SDIV, MVT::v64i8, 14 }, // 2*ext+2*pmulhw sequence
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{ ISD::SREM, MVT::v64i8, 16 }, // 2*ext+2*pmulhw+mul+sub sequence
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{ ISD::UDIV, MVT::v64i8, 14 }, // 2*ext+2*pmulhw sequence
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{ ISD::UREM, MVT::v64i8, 16 }, // 2*ext+2*pmulhw+mul+sub sequence
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{ ISD::SDIV, MVT::v32i16, 6 }, // vpmulhw sequence
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{ ISD::SREM, MVT::v32i16, 8 }, // vpmulhw+mul+sub sequence
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{ ISD::UDIV, MVT::v32i16, 6 }, // vpmulhuw sequence
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{ ISD::UREM, MVT::v32i16, 8 }, // vpmulhuw+mul+sub sequence
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};
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if ((Op2Info == TargetTransformInfo::OK_UniformConstantValue ||
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Op2Info == TargetTransformInfo::OK_NonUniformConstantValue) &&
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ST->hasBWI()) {
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if (const auto *Entry =
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CostTableLookup(AVX512BWConstCostTable, ISD, LT.second))
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return LT.first * Entry->Cost;
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}
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static const CostTblEntry AVX512ConstCostTable[] = {
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{ ISD::SDIV, MVT::v16i32, 15 }, // vpmuldq sequence
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{ ISD::SREM, MVT::v16i32, 17 }, // vpmuldq+mul+sub sequence
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{ ISD::UDIV, MVT::v16i32, 15 }, // vpmuludq sequence
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{ ISD::UREM, MVT::v16i32, 17 }, // vpmuludq+mul+sub sequence
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};
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if ((Op2Info == TargetTransformInfo::OK_UniformConstantValue ||
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Op2Info == TargetTransformInfo::OK_NonUniformConstantValue) &&
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ST->hasAVX512()) {
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if (const auto *Entry =
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CostTableLookup(AVX512ConstCostTable, ISD, LT.second))
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return LT.first * Entry->Cost;
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}
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static const CostTblEntry AVX2ConstCostTable[] = {
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{ ISD::SDIV, MVT::v32i8, 14 }, // 2*ext+2*pmulhw sequence
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{ ISD::SREM, MVT::v32i8, 16 }, // 2*ext+2*pmulhw+mul+sub sequence
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{ ISD::UDIV, MVT::v32i8, 14 }, // 2*ext+2*pmulhw sequence
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{ ISD::UREM, MVT::v32i8, 16 }, // 2*ext+2*pmulhw+mul+sub sequence
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{ ISD::SDIV, MVT::v16i16, 6 }, // vpmulhw sequence
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{ ISD::SREM, MVT::v16i16, 8 }, // vpmulhw+mul+sub sequence
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{ ISD::UDIV, MVT::v16i16, 6 }, // vpmulhuw sequence
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{ ISD::UREM, MVT::v16i16, 8 }, // vpmulhuw+mul+sub sequence
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{ ISD::SDIV, MVT::v8i32, 15 }, // vpmuldq sequence
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{ ISD::SREM, MVT::v8i32, 19 }, // vpmuldq+mul+sub sequence
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{ ISD::UDIV, MVT::v8i32, 15 }, // vpmuludq sequence
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{ ISD::UREM, MVT::v8i32, 19 }, // vpmuludq+mul+sub sequence
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};
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if ((Op2Info == TargetTransformInfo::OK_UniformConstantValue ||
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Op2Info == TargetTransformInfo::OK_NonUniformConstantValue) &&
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ST->hasAVX2()) {
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if (const auto *Entry = CostTableLookup(AVX2ConstCostTable, ISD, LT.second))
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return LT.first * Entry->Cost;
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}
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static const CostTblEntry SSE2ConstCostTable[] = {
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{ ISD::SDIV, MVT::v32i8, 28+2 }, // 4*ext+4*pmulhw sequence + split.
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{ ISD::SREM, MVT::v32i8, 32+2 }, // 4*ext+4*pmulhw+mul+sub sequence + split.
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{ ISD::SDIV, MVT::v16i8, 14 }, // 2*ext+2*pmulhw sequence
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{ ISD::SREM, MVT::v16i8, 16 }, // 2*ext+2*pmulhw+mul+sub sequence
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{ ISD::UDIV, MVT::v32i8, 28+2 }, // 4*ext+4*pmulhw sequence + split.
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{ ISD::UREM, MVT::v32i8, 32+2 }, // 4*ext+4*pmulhw+mul+sub sequence + split.
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{ ISD::UDIV, MVT::v16i8, 14 }, // 2*ext+2*pmulhw sequence
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{ ISD::UREM, MVT::v16i8, 16 }, // 2*ext+2*pmulhw+mul+sub sequence
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{ ISD::SDIV, MVT::v16i16, 12+2 }, // 2*pmulhw sequence + split.
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{ ISD::SREM, MVT::v16i16, 16+2 }, // 2*pmulhw+mul+sub sequence + split.
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{ ISD::SDIV, MVT::v8i16, 6 }, // pmulhw sequence
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{ 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 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.
|
|
};
|
|
|
|
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::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
|
|
|
|
{ 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::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 },
|
|
};
|
|
|
|
// 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, 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::v16i16, 10 }, // extend/vpsrlvd/pack sequence.
|
|
|
|
{ ISD::SRL, MVT::v32i8, 11 }, // vpblendvb sequence.
|
|
{ ISD::SRL, MVT::v16i16, 10 }, // extend/vpsrlvd/pack sequence.
|
|
|
|
{ ISD::SRA, MVT::v32i8, 24 }, // vpblendvb sequence.
|
|
{ ISD::SRA, MVT::v16i16, 10 }, // 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(), 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, Op1Info, Op2Info);
|
|
}
|
|
|
|
int X86TTIImpl::getShuffleCost(TTI::ShuffleKind Kind, Type *Tp, int Index,
|
|
Type *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, Tp);
|
|
|
|
// 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 = SubTp->getVectorNumElements();
|
|
if (NumSubElts > OrigSubElts &&
|
|
(Index % OrigSubElts) == 0 && (NumSubElts % OrigSubElts) == 0 &&
|
|
LT.second.getVectorElementType() ==
|
|
SubLT.second.getVectorElementType() &&
|
|
LT.second.getVectorElementType().getSizeInBits() ==
|
|
Tp->getVectorElementType()->getPrimitiveSizeInBits()) {
|
|
assert(NumElts >= NumSubElts && NumElts > OrigSubElts &&
|
|
"Unexpected number of elements!");
|
|
Type *VecTy = VectorType::get(Tp->getVectorElementType(),
|
|
LT.second.getVectorNumElements());
|
|
Type *SubTy = VectorType::get(Tp->getVectorElementType(),
|
|
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
|
|
}
|
|
}
|
|
}
|
|
|
|
// 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() ==
|
|
Tp->getVectorElementType()->getPrimitiveSizeInBits() &&
|
|
LegalVT.getVectorNumElements() < Tp->getVectorNumElements()) {
|
|
|
|
unsigned VecTySize = DL.getTypeStoreSize(Tp);
|
|
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;
|
|
|
|
Type *SingleOpTy = VectorType::get(Tp->getVectorElementType(),
|
|
LegalVT.getVectorNumElements());
|
|
|
|
unsigned NumOfShuffles = (NumOfSrcs - 1) * NumOfDests;
|
|
return NumOfShuffles *
|
|
getShuffleCost(TTI::SK_PermuteTwoSrc, SingleOpTy, 0, nullptr);
|
|
}
|
|
|
|
return BaseT::getShuffleCost(Kind, Tp, 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, 1}, // vpermt2b
|
|
{TTI::SK_PermuteTwoSrc, MVT::v32i8, 1}, // vpermt2b
|
|
{TTI::SK_PermuteTwoSrc, MVT::v16i8, 1} // 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, 1}, // vpermw
|
|
{TTI::SK_Reverse, MVT::v16i16, 1}, // vpermw
|
|
{TTI::SK_Reverse, MVT::v64i8, 2}, // pshufb + vshufi64x2
|
|
|
|
{TTI::SK_PermuteSingleSrc, MVT::v32i16, 1}, // vpermw
|
|
{TTI::SK_PermuteSingleSrc, MVT::v16i16, 1}, // vpermw
|
|
{TTI::SK_PermuteSingleSrc, MVT::v8i16, 1}, // vpermw
|
|
{TTI::SK_PermuteSingleSrc, MVT::v64i8, 8}, // extend to v32i16
|
|
{TTI::SK_PermuteSingleSrc, MVT::v32i8, 3}, // vpermw + zext/trunc
|
|
|
|
{TTI::SK_PermuteTwoSrc, MVT::v32i16, 1}, // vpermt2w
|
|
{TTI::SK_PermuteTwoSrc, MVT::v16i16, 1}, // vpermt2w
|
|
{TTI::SK_PermuteTwoSrc, MVT::v8i16, 1}, // vpermt2w
|
|
{TTI::SK_PermuteTwoSrc, MVT::v32i8, 3}, // zext + vpermt2w + trunc
|
|
{TTI::SK_PermuteTwoSrc, MVT::v64i8, 19}, // 6 * v32i8 + 1
|
|
{TTI::SK_PermuteTwoSrc, MVT::v16i8, 3} // zext + vpermt2w + trunc
|
|
};
|
|
|
|
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_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
|
|
};
|
|
|
|
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, Tp, Index, SubTp);
|
|
}
|
|
|
|
int X86TTIImpl::getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src,
|
|
const Instruction *I) {
|
|
int ISD = TLI->InstructionOpcodeToISD(Opcode);
|
|
assert(ISD && "Invalid opcode");
|
|
|
|
// 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::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 load + broadcast.
|
|
{ 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 },
|
|
};
|
|
|
|
static const TypeConversionCostTblEntry AVX512DQConversionTbl[] = {
|
|
{ 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::SINT_TO_FP, MVT::v8f32, MVT::v8i64, 1 },
|
|
{ ISD::SINT_TO_FP, MVT::v8f64, MVT::v8i64, 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::UINT_TO_FP, MVT::v8f32, MVT::v8i64, 1 },
|
|
{ ISD::UINT_TO_FP, MVT::v8f64, MVT::v8i64, 1 },
|
|
|
|
{ ISD::FP_TO_SINT, MVT::v2i64, MVT::v2f32, 1 },
|
|
{ ISD::FP_TO_SINT, MVT::v4i64, MVT::v4f32, 1 },
|
|
{ ISD::FP_TO_SINT, MVT::v8i64, MVT::v8f32, 1 },
|
|
{ ISD::FP_TO_SINT, MVT::v2i64, MVT::v2f64, 1 },
|
|
{ ISD::FP_TO_SINT, MVT::v4i64, MVT::v4f64, 1 },
|
|
{ ISD::FP_TO_SINT, MVT::v8i64, MVT::v8f64, 1 },
|
|
|
|
{ ISD::FP_TO_UINT, MVT::v2i64, MVT::v2f32, 1 },
|
|
{ ISD::FP_TO_UINT, MVT::v4i64, MVT::v4f32, 1 },
|
|
{ ISD::FP_TO_UINT, MVT::v8i64, MVT::v8f32, 1 },
|
|
{ ISD::FP_TO_UINT, MVT::v2i64, MVT::v2f64, 1 },
|
|
{ ISD::FP_TO_UINT, MVT::v4i64, MVT::v4f64, 1 },
|
|
{ ISD::FP_TO_UINT, MVT::v8i64, MVT::v8f64, 1 },
|
|
};
|
|
|
|
// 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::v16i8, MVT::v16i32, 1 },
|
|
{ ISD::TRUNCATE, MVT::v16i16, MVT::v16i32, 1 },
|
|
{ ISD::TRUNCATE, MVT::v8i16, MVT::v8i64, 1 },
|
|
{ ISD::TRUNCATE, MVT::v8i32, MVT::v8i64, 1 },
|
|
|
|
// v16i1 -> v16i32 - load + broadcast
|
|
{ ISD::SIGN_EXTEND, MVT::v16i32, MVT::v16i1, 2 },
|
|
{ ISD::ZERO_EXTEND, MVT::v16i32, MVT::v16i1, 2 },
|
|
{ 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::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::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::v8f64, MVT::v8i8, 2 },
|
|
{ ISD::UINT_TO_FP, MVT::v16f32, MVT::v16i8, 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::v8f64, MVT::v8i16, 2 },
|
|
{ ISD::UINT_TO_FP, MVT::v16f32, MVT::v16i16, 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::v8f64, MVT::v8i32, 1 },
|
|
{ ISD::UINT_TO_FP, MVT::v16f32, MVT::v16i32, 1 },
|
|
{ ISD::UINT_TO_FP, MVT::v2f32, MVT::v2i64, 5 },
|
|
{ ISD::UINT_TO_FP, MVT::v8f32, MVT::v8i64, 26 },
|
|
{ ISD::UINT_TO_FP, MVT::v2f64, MVT::v2i64, 5 },
|
|
{ ISD::UINT_TO_FP, MVT::v4f64, MVT::v4i64, 5 },
|
|
{ ISD::UINT_TO_FP, MVT::v8f64, MVT::v8i64, 5 },
|
|
|
|
{ ISD::UINT_TO_FP, MVT::f32, MVT::i64, 1 },
|
|
{ ISD::UINT_TO_FP, MVT::f64, MVT::i64, 1 },
|
|
{ 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::v4i32, MVT::v4f64, 1 },
|
|
{ ISD::FP_TO_UINT, MVT::v8i32, MVT::v8f32, 1 },
|
|
{ ISD::FP_TO_UINT, MVT::v8i32, MVT::v8f64, 1 },
|
|
{ ISD::FP_TO_UINT, MVT::v8i16, MVT::v8f64, 2 },
|
|
{ ISD::FP_TO_UINT, MVT::v8i8, MVT::v8f64, 2 },
|
|
{ ISD::FP_TO_UINT, MVT::v16i32, MVT::v16f32, 1 },
|
|
{ ISD::FP_TO_UINT, MVT::v16i16, MVT::v16f32, 2 },
|
|
{ ISD::FP_TO_UINT, MVT::v16i8, MVT::v16f32, 2 },
|
|
};
|
|
|
|
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::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::v4i8, MVT::v4i64, 2 },
|
|
{ ISD::TRUNCATE, MVT::v4i16, MVT::v4i64, 2 },
|
|
{ ISD::TRUNCATE, MVT::v4i32, MVT::v4i64, 2 },
|
|
{ ISD::TRUNCATE, MVT::v8i8, MVT::v8i32, 2 },
|
|
{ ISD::TRUNCATE, MVT::v8i16, MVT::v8i32, 2 },
|
|
{ ISD::TRUNCATE, MVT::v8i32, MVT::v8i64, 4 },
|
|
|
|
{ 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::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::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, 4 },
|
|
{ ISD::TRUNCATE, MVT::v8i8, MVT::v8i64, 11 },
|
|
{ ISD::TRUNCATE, MVT::v8i16, MVT::v8i64, 9 },
|
|
{ ISD::TRUNCATE, MVT::v8i32, MVT::v8i64, 9 },
|
|
{ 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::v4i8, MVT::v4f32, 1 },
|
|
{ ISD::FP_TO_SINT, MVT::v8i8, MVT::v8f32, 7 },
|
|
// 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 },
|
|
|
|
{ ISD::TRUNCATE, MVT::v4i8, MVT::v4i16, 2 },
|
|
{ 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 },
|
|
};
|
|
|
|
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::v4i16, MVT::v4f32, 2 },
|
|
{ ISD::FP_TO_SINT, MVT::v2i16, MVT::v2f64, 2 },
|
|
|
|
{ ISD::FP_TO_SINT, MVT::v2i32, MVT::v2f64, 3 },
|
|
|
|
{ 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::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 },
|
|
|
|
{ ISD::TRUNCATE, MVT::v2i8, MVT::v2i16, 2 }, // PAND+PACKUSWB
|
|
{ ISD::TRUNCATE, MVT::v4i8, MVT::v4i16, 4 },
|
|
{ ISD::TRUNCATE, MVT::v8i8, MVT::v8i16, 2 },
|
|
{ ISD::TRUNCATE, MVT::v16i8, MVT::v16i16, 3 },
|
|
{ ISD::TRUNCATE, MVT::v2i8, MVT::v2i32, 3 }, // PAND+3*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 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 BaseT::getCastInstrCost(Opcode, Dst, Src);
|
|
|
|
MVT SimpleSrcTy = SrcTy.getSimpleVT();
|
|
MVT SimpleDstTy = DstTy.getSimpleVT();
|
|
|
|
// Make sure that neither type is going to be split before using the
|
|
// AVX512 tables. This handles -mprefer-vector-width=256
|
|
// with -min-legal-vector-width<=256
|
|
if (TLI->getTypeAction(SimpleSrcTy) != TargetLowering::TypeSplitVector &&
|
|
TLI->getTypeAction(SimpleDstTy) != TargetLowering::TypeSplitVector) {
|
|
if (ST->hasBWI())
|
|
if (const auto *Entry = ConvertCostTableLookup(AVX512BWConversionTbl, ISD,
|
|
SimpleDstTy, SimpleSrcTy))
|
|
return Entry->Cost;
|
|
|
|
if (ST->hasDQI())
|
|
if (const auto *Entry = ConvertCostTableLookup(AVX512DQConversionTbl, ISD,
|
|
SimpleDstTy, SimpleSrcTy))
|
|
return Entry->Cost;
|
|
|
|
if (ST->hasAVX512())
|
|
if (const auto *Entry = ConvertCostTableLookup(AVX512FConversionTbl, ISD,
|
|
SimpleDstTy, SimpleSrcTy))
|
|
return Entry->Cost;
|
|
}
|
|
|
|
if (ST->hasAVX2()) {
|
|
if (const auto *Entry = ConvertCostTableLookup(AVX2ConversionTbl, ISD,
|
|
SimpleDstTy, SimpleSrcTy))
|
|
return Entry->Cost;
|
|
}
|
|
|
|
if (ST->hasAVX()) {
|
|
if (const auto *Entry = ConvertCostTableLookup(AVXConversionTbl, ISD,
|
|
SimpleDstTy, SimpleSrcTy))
|
|
return Entry->Cost;
|
|
}
|
|
|
|
if (ST->hasSSE41()) {
|
|
if (const auto *Entry = ConvertCostTableLookup(SSE41ConversionTbl, ISD,
|
|
SimpleDstTy, SimpleSrcTy))
|
|
return Entry->Cost;
|
|
}
|
|
|
|
if (ST->hasSSE2()) {
|
|
if (const auto *Entry = ConvertCostTableLookup(SSE2ConversionTbl, ISD,
|
|
SimpleDstTy, SimpleSrcTy))
|
|
return Entry->Cost;
|
|
}
|
|
|
|
return BaseT::getCastInstrCost(Opcode, Dst, Src, I);
|
|
}
|
|
|
|
int X86TTIImpl::getCmpSelInstrCost(unsigned Opcode, Type *ValTy, Type *CondTy,
|
|
const Instruction *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 },
|
|
};
|
|
|
|
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, I);
|
|
}
|
|
|
|
unsigned X86TTIImpl::getAtomicMemIntrinsicMaxElementSize() const { return 16; }
|
|
|
|
int X86TTIImpl::getIntrinsicInstrCost(Intrinsic::ID IID, Type *RetTy,
|
|
ArrayRef<Type *> Tys, FastMathFlags FMF,
|
|
unsigned ScalarizationCostPassed) {
|
|
// 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::CTLZ, MVT::v8i64, 29 },
|
|
{ ISD::CTLZ, MVT::v16i32, 35 },
|
|
{ ISD::CTPOP, MVT::v8i64, 16 },
|
|
{ ISD::CTPOP, MVT::v16i32, 24 },
|
|
{ ISD::CTTZ, MVT::v8i64, 20 },
|
|
{ ISD::CTTZ, MVT::v16i32, 28 },
|
|
{ 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
|
|
};
|
|
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::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::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::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 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::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::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 *OpTy = RetTy;
|
|
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::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->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(IID, RetTy, Tys, FMF, ScalarizationCostPassed);
|
|
}
|
|
|
|
int X86TTIImpl::getIntrinsicInstrCost(Intrinsic::ID IID, Type *RetTy,
|
|
ArrayRef<Value *> Args, FastMathFlags FMF,
|
|
unsigned VF) {
|
|
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 }
|
|
};
|
|
|
|
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(IID, RetTy, Args, FMF, VF);
|
|
}
|
|
|
|
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).
|
|
// TODO: Under what circumstances should we shuffle using the full width?
|
|
int ShuffleCost = 1;
|
|
if (Opcode == Instruction::InsertElement) {
|
|
Type *SubTy = VectorType::get(Val->getVectorElementType(), 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;
|
|
}
|
|
|
|
int X86TTIImpl::getMemoryOpCost(unsigned Opcode, Type *Src,
|
|
MaybeAlign Alignment, unsigned AddressSpace,
|
|
const Instruction *I) {
|
|
// Handle non-power-of-two vectors such as <3 x float>
|
|
if (VectorType *VTy = dyn_cast<VectorType>(Src)) {
|
|
unsigned NumElem = VTy->getVectorNumElements();
|
|
|
|
// 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)) {
|
|
int Cost = BaseT::getMemoryOpCost(Opcode, VTy->getScalarType(), Alignment,
|
|
AddressSpace);
|
|
int SplitCost = getScalarizationOverhead(Src, Opcode == Instruction::Load,
|
|
Opcode == Instruction::Store);
|
|
return NumElem * Cost + SplitCost;
|
|
}
|
|
}
|
|
|
|
// 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,
|
|
unsigned Alignment,
|
|
unsigned AddressSpace) {
|
|
bool IsLoad = (Instruction::Load == Opcode);
|
|
bool IsStore = (Instruction::Store == Opcode);
|
|
|
|
VectorType *SrcVTy = dyn_cast<VectorType>(SrcTy);
|
|
if (!SrcVTy)
|
|
// To calculate scalar take the regular cost, without mask
|
|
return getMemoryOpCost(Opcode, SrcTy, MaybeAlign(Alignment), AddressSpace);
|
|
|
|
unsigned NumElem = SrcVTy->getVectorNumElements();
|
|
VectorType *MaskTy =
|
|
VectorType::get(Type::getInt8Ty(SrcVTy->getContext()), NumElem);
|
|
if ((IsLoad && !isLegalMaskedLoad(SrcVTy, MaybeAlign(Alignment))) ||
|
|
(IsStore && !isLegalMaskedStore(SrcVTy, MaybeAlign(Alignment))) ||
|
|
!isPowerOf2_32(NumElem)) {
|
|
// Scalarization
|
|
int MaskSplitCost = getScalarizationOverhead(MaskTy, false, true);
|
|
int ScalarCompareCost = getCmpSelInstrCost(
|
|
Instruction::ICmp, Type::getInt8Ty(SrcVTy->getContext()), nullptr);
|
|
int BranchCost = getCFInstrCost(Instruction::Br);
|
|
int MaskCmpCost = NumElem * (BranchCost + ScalarCompareCost);
|
|
|
|
int ValueSplitCost = getScalarizationOverhead(SrcVTy, IsLoad, IsStore);
|
|
int MemopCost =
|
|
NumElem * BaseT::getMemoryOpCost(Opcode, SrcVTy->getScalarType(),
|
|
MaybeAlign(Alignment), AddressSpace);
|
|
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) {
|
|
VectorType *NewMaskTy = VectorType::get(MaskTy->getVectorElementType(),
|
|
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, Type *ValTy,
|
|
bool IsPairwise) {
|
|
// We use the Intel Architecture Code Analyzer(IACA) to measure the throughput
|
|
// and make it as the cost.
|
|
|
|
static const CostTblEntry SLMCostTblPairWise[] = {
|
|
{ ISD::FADD, MVT::v2f64, 3 },
|
|
{ ISD::ADD, MVT::v2i64, 5 },
|
|
};
|
|
|
|
static const CostTblEntry SSE2CostTblPairWise[] = {
|
|
{ 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 "3.5".
|
|
{ ISD::ADD, MVT::v2i16, 3 }, // FIXME: chosen to be less than v4i16
|
|
{ ISD::ADD, MVT::v4i16, 4 }, // FIXME: chosen to be less than v8i16
|
|
{ ISD::ADD, MVT::v8i16, 5 },
|
|
{ ISD::ADD, MVT::v2i8, 2 },
|
|
{ ISD::ADD, MVT::v4i8, 2 },
|
|
{ ISD::ADD, MVT::v8i8, 2 },
|
|
{ ISD::ADD, MVT::v16i8, 3 },
|
|
};
|
|
|
|
static const CostTblEntry AVX1CostTblPairWise[] = {
|
|
{ ISD::FADD, MVT::v4f64, 5 },
|
|
{ ISD::FADD, MVT::v8f32, 7 },
|
|
{ ISD::ADD, MVT::v2i64, 1 }, // The data reported by the IACA tool is "1.5".
|
|
{ ISD::ADD, MVT::v4i64, 5 }, // The data reported by the IACA tool is "4.8".
|
|
{ ISD::ADD, MVT::v8i32, 5 },
|
|
{ ISD::ADD, MVT::v16i16, 6 },
|
|
{ ISD::ADD, MVT::v32i8, 4 },
|
|
};
|
|
|
|
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 (IsPairwise) {
|
|
if (ST->isSLM())
|
|
if (const auto *Entry = CostTableLookup(SLMCostTblPairWise, ISD, MTy))
|
|
return Entry->Cost;
|
|
|
|
if (ST->hasAVX())
|
|
if (const auto *Entry = CostTableLookup(AVX1CostTblPairWise, ISD, MTy))
|
|
return Entry->Cost;
|
|
|
|
if (ST->hasSSE2())
|
|
if (const auto *Entry = CostTableLookup(SSE2CostTblPairWise, ISD, MTy))
|
|
return Entry->Cost;
|
|
} else {
|
|
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;
|
|
|
|
if (IsPairwise) {
|
|
if (ST->isSLM())
|
|
if (const auto *Entry = CostTableLookup(SLMCostTblPairWise, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
|
|
if (ST->hasAVX())
|
|
if (const auto *Entry = CostTableLookup(AVX1CostTblPairWise, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
|
|
if (ST->hasSSE2())
|
|
if (const auto *Entry = CostTableLookup(SSE2CostTblPairWise, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
} else {
|
|
if (ST->isSLM())
|
|
if (const auto *Entry = CostTableLookup(SLMCostTblNoPairWise, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
|
|
if (ST->hasAVX())
|
|
if (const auto *Entry = CostTableLookup(AVX1CostTblNoPairWise, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
|
|
if (ST->hasSSE2())
|
|
if (const auto *Entry = CostTableLookup(SSE2CostTblNoPairWise, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
}
|
|
|
|
// FIXME: These assume a naive kshift+binop lowering, which is probably
|
|
// conservative in most cases.
|
|
// FIXME: This doesn't cost large types like v128i1 correctly.
|
|
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 (!IsPairwise && ValTy->getVectorElementType()->isIntegerTy(1)) {
|
|
if (ST->hasAVX512())
|
|
if (const auto *Entry = CostTableLookup(AVX512BoolReduction, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
if (ST->hasAVX2())
|
|
if (const auto *Entry = CostTableLookup(AVX2BoolReduction, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
if (ST->hasAVX())
|
|
if (const auto *Entry = CostTableLookup(AVX1BoolReduction, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
if (ST->hasSSE2())
|
|
if (const auto *Entry = CostTableLookup(SSE2BoolReduction, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
}
|
|
|
|
return BaseT::getArithmeticReductionCost(Opcode, ValTy, IsPairwise);
|
|
}
|
|
|
|
int X86TTIImpl::getMinMaxReductionCost(Type *ValTy, Type *CondTy,
|
|
bool IsPairwise, bool IsUnsigned) {
|
|
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 SSE1CostTblPairWise[] = {
|
|
{ISD::FMINNUM, MVT::v4f32, 4},
|
|
};
|
|
|
|
static const CostTblEntry SSE2CostTblPairWise[] = {
|
|
{ISD::FMINNUM, MVT::v2f64, 3},
|
|
{ISD::SMIN, MVT::v2i64, 6},
|
|
{ISD::UMIN, MVT::v2i64, 8},
|
|
{ISD::SMIN, MVT::v4i32, 6},
|
|
{ISD::UMIN, MVT::v4i32, 8},
|
|
{ISD::SMIN, MVT::v8i16, 4},
|
|
{ISD::UMIN, MVT::v8i16, 6},
|
|
{ISD::SMIN, MVT::v16i8, 8},
|
|
{ISD::UMIN, MVT::v16i8, 6},
|
|
};
|
|
|
|
static const CostTblEntry SSE41CostTblPairWise[] = {
|
|
{ISD::FMINNUM, MVT::v4f32, 2},
|
|
{ISD::SMIN, MVT::v2i64, 9},
|
|
{ISD::UMIN, MVT::v2i64,10},
|
|
{ISD::SMIN, MVT::v4i32, 1}, // The data reported by the IACA is "1.5"
|
|
{ISD::UMIN, MVT::v4i32, 2}, // The data reported by the IACA is "1.8"
|
|
{ISD::SMIN, MVT::v8i16, 2},
|
|
{ISD::UMIN, MVT::v8i16, 2},
|
|
{ISD::SMIN, MVT::v16i8, 3},
|
|
{ISD::UMIN, MVT::v16i8, 3},
|
|
};
|
|
|
|
static const CostTblEntry SSE42CostTblPairWise[] = {
|
|
{ISD::SMIN, MVT::v2i64, 7}, // The data reported by the IACA is "6.8"
|
|
{ISD::UMIN, MVT::v2i64, 8}, // The data reported by the IACA is "8.6"
|
|
};
|
|
|
|
static const CostTblEntry AVX1CostTblPairWise[] = {
|
|
{ISD::FMINNUM, MVT::v4f32, 1},
|
|
{ISD::FMINNUM, MVT::v4f64, 1},
|
|
{ISD::FMINNUM, MVT::v8f32, 2},
|
|
{ISD::SMIN, MVT::v2i64, 3},
|
|
{ISD::UMIN, MVT::v2i64, 3},
|
|
{ISD::SMIN, MVT::v4i32, 1},
|
|
{ISD::UMIN, MVT::v4i32, 1},
|
|
{ISD::SMIN, MVT::v8i16, 1},
|
|
{ISD::UMIN, MVT::v8i16, 1},
|
|
{ISD::SMIN, MVT::v16i8, 2},
|
|
{ISD::UMIN, MVT::v16i8, 2},
|
|
{ISD::SMIN, MVT::v4i64, 7},
|
|
{ISD::UMIN, MVT::v4i64, 7},
|
|
{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 AVX2CostTblPairWise[] = {
|
|
{ISD::SMIN, MVT::v4i64, 2},
|
|
{ISD::UMIN, MVT::v4i64, 2},
|
|
{ISD::SMIN, MVT::v8i32, 1},
|
|
{ISD::UMIN, MVT::v8i32, 1},
|
|
{ISD::SMIN, MVT::v16i16, 1},
|
|
{ISD::UMIN, MVT::v16i16, 1},
|
|
{ISD::SMIN, MVT::v32i8, 2},
|
|
{ISD::UMIN, MVT::v32i8, 2},
|
|
};
|
|
|
|
static const CostTblEntry AVX512CostTblPairWise[] = {
|
|
{ISD::FMINNUM, MVT::v8f64, 1},
|
|
{ISD::FMINNUM, MVT::v16f32, 2},
|
|
{ISD::SMIN, MVT::v8i64, 2},
|
|
{ISD::UMIN, MVT::v8i64, 2},
|
|
{ISD::SMIN, MVT::v16i32, 1},
|
|
{ISD::UMIN, MVT::v16i32, 1},
|
|
};
|
|
|
|
static const CostTblEntry SSE1CostTblNoPairWise[] = {
|
|
{ISD::FMINNUM, MVT::v4f32, 4},
|
|
};
|
|
|
|
static const CostTblEntry SSE2CostTblNoPairWise[] = {
|
|
{ISD::FMINNUM, MVT::v2f64, 3},
|
|
{ISD::SMIN, MVT::v2i64, 6},
|
|
{ISD::UMIN, MVT::v2i64, 8},
|
|
{ISD::SMIN, MVT::v4i32, 6},
|
|
{ISD::UMIN, MVT::v4i32, 8},
|
|
{ISD::SMIN, MVT::v8i16, 4},
|
|
{ISD::UMIN, MVT::v8i16, 6},
|
|
{ISD::SMIN, MVT::v16i8, 8},
|
|
{ISD::UMIN, MVT::v16i8, 6},
|
|
};
|
|
|
|
static const CostTblEntry SSE41CostTblNoPairWise[] = {
|
|
{ISD::FMINNUM, MVT::v4f32, 3},
|
|
{ISD::SMIN, MVT::v2i64, 9},
|
|
{ISD::UMIN, MVT::v2i64,11},
|
|
{ISD::SMIN, MVT::v4i32, 1}, // The data reported by the IACA is "1.5"
|
|
{ISD::UMIN, MVT::v4i32, 2}, // The data reported by the IACA is "1.8"
|
|
{ISD::SMIN, MVT::v8i16, 1}, // The data reported by the IACA is "1.5"
|
|
{ISD::UMIN, MVT::v8i16, 2}, // The data reported by the IACA is "1.8"
|
|
{ISD::SMIN, MVT::v16i8, 3},
|
|
{ISD::UMIN, MVT::v16i8, 3},
|
|
};
|
|
|
|
static const CostTblEntry SSE42CostTblNoPairWise[] = {
|
|
{ISD::SMIN, MVT::v2i64, 7}, // The data reported by the IACA is "6.8"
|
|
{ISD::UMIN, MVT::v2i64, 9}, // The data reported by the IACA is "8.6"
|
|
};
|
|
|
|
static const CostTblEntry AVX1CostTblNoPairWise[] = {
|
|
{ISD::FMINNUM, MVT::v4f32, 1},
|
|
{ISD::FMINNUM, MVT::v4f64, 1},
|
|
{ISD::FMINNUM, MVT::v8f32, 1},
|
|
{ISD::SMIN, MVT::v2i64, 3},
|
|
{ISD::UMIN, MVT::v2i64, 3},
|
|
{ISD::SMIN, MVT::v4i32, 1},
|
|
{ISD::UMIN, MVT::v4i32, 1},
|
|
{ISD::SMIN, MVT::v8i16, 1},
|
|
{ISD::UMIN, MVT::v8i16, 1},
|
|
{ISD::SMIN, MVT::v16i8, 2},
|
|
{ISD::UMIN, MVT::v16i8, 2},
|
|
{ISD::SMIN, MVT::v4i64, 7},
|
|
{ISD::UMIN, MVT::v4i64, 7},
|
|
{ISD::SMIN, MVT::v8i32, 2},
|
|
{ISD::UMIN, MVT::v8i32, 2},
|
|
{ISD::SMIN, MVT::v16i16, 2},
|
|
{ISD::UMIN, MVT::v16i16, 2},
|
|
{ISD::SMIN, MVT::v32i8, 2},
|
|
{ISD::UMIN, MVT::v32i8, 2},
|
|
};
|
|
|
|
static const CostTblEntry AVX2CostTblNoPairWise[] = {
|
|
{ISD::SMIN, MVT::v4i64, 1},
|
|
{ISD::UMIN, MVT::v4i64, 1},
|
|
{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 AVX512CostTblNoPairWise[] = {
|
|
{ISD::FMINNUM, MVT::v8f64, 1},
|
|
{ISD::FMINNUM, MVT::v16f32, 2},
|
|
{ISD::SMIN, MVT::v8i64, 1},
|
|
{ISD::UMIN, MVT::v8i64, 1},
|
|
{ISD::SMIN, MVT::v16i32, 1},
|
|
{ISD::UMIN, MVT::v16i32, 1},
|
|
};
|
|
|
|
if (IsPairwise) {
|
|
if (ST->hasAVX512())
|
|
if (const auto *Entry = CostTableLookup(AVX512CostTblPairWise, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
|
|
if (ST->hasAVX2())
|
|
if (const auto *Entry = CostTableLookup(AVX2CostTblPairWise, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
|
|
if (ST->hasAVX())
|
|
if (const auto *Entry = CostTableLookup(AVX1CostTblPairWise, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
|
|
if (ST->hasSSE42())
|
|
if (const auto *Entry = CostTableLookup(SSE42CostTblPairWise, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
|
|
if (ST->hasSSE41())
|
|
if (const auto *Entry = CostTableLookup(SSE41CostTblPairWise, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
|
|
if (ST->hasSSE2())
|
|
if (const auto *Entry = CostTableLookup(SSE2CostTblPairWise, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
|
|
if (ST->hasSSE1())
|
|
if (const auto *Entry = CostTableLookup(SSE1CostTblPairWise, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
} else {
|
|
if (ST->hasAVX512())
|
|
if (const auto *Entry =
|
|
CostTableLookup(AVX512CostTblNoPairWise, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
|
|
if (ST->hasAVX2())
|
|
if (const auto *Entry = CostTableLookup(AVX2CostTblNoPairWise, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
|
|
if (ST->hasAVX())
|
|
if (const auto *Entry = CostTableLookup(AVX1CostTblNoPairWise, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
|
|
if (ST->hasSSE42())
|
|
if (const auto *Entry = CostTableLookup(SSE42CostTblNoPairWise, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
|
|
if (ST->hasSSE41())
|
|
if (const auto *Entry = CostTableLookup(SSE41CostTblNoPairWise, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
|
|
if (ST->hasSSE2())
|
|
if (const auto *Entry = CostTableLookup(SSE2CostTblNoPairWise, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
|
|
if (ST->hasSSE1())
|
|
if (const auto *Entry = CostTableLookup(SSE1CostTblNoPairWise, ISD, MTy))
|
|
return LT.first * Entry->Cost;
|
|
}
|
|
|
|
return BaseT::getMinMaxReductionCost(ValTy, CondTy, IsPairwise, IsUnsigned);
|
|
}
|
|
|
|
/// 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) {
|
|
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) {
|
|
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);
|
|
return (Cost <= NumConstants * TTI::TCC_Basic)
|
|
? static_cast<int>(TTI::TCC_Free)
|
|
: Cost;
|
|
}
|
|
|
|
return X86TTIImpl::getIntImmCost(Imm, Ty);
|
|
}
|
|
|
|
int X86TTIImpl::getIntImmCostIntrin(Intrinsic::ID IID, unsigned Idx,
|
|
const APInt &Imm, Type *Ty) {
|
|
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);
|
|
}
|
|
|
|
unsigned X86TTIImpl::getUserCost(const User *U,
|
|
ArrayRef<const Value *> Operands) {
|
|
if (isa<StoreInst>(U)) {
|
|
Value *Ptr = U->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;
|
|
}
|
|
return BaseT::getUserCost(U, Operands);
|
|
}
|
|
|
|
// Return an average cost of Gather / Scatter instruction, maybe improved later
|
|
int X86TTIImpl::getGSVectorCost(unsigned Opcode, Type *SrcVTy, Value *Ptr,
|
|
unsigned Alignment, unsigned AddressSpace) {
|
|
|
|
assert(isa<VectorType>(SrcVTy) && "Unexpected type in getGSVectorCost");
|
|
unsigned VF = SrcVTy->getVectorNumElements();
|
|
|
|
// Try to reduce index size from 64 bit (default for GEP)
|
|
// to 32. It is essential for VF 16. If the index can't be reduced to 32, the
|
|
// operation will use 16 x 64 indices which do not fit in a zmm and needs
|
|
// to split. Also check that the base pointer is the same for all lanes,
|
|
// and that there's at most one variable index.
|
|
auto getIndexSizeInBits = [](Value *Ptr, const DataLayout& DL) {
|
|
unsigned IndexSize = DL.getPointerSizeInBits();
|
|
GetElementPtrInst *GEP = dyn_cast<GetElementPtrInst>(Ptr);
|
|
if (IndexSize < 64 || !GEP)
|
|
return IndexSize;
|
|
|
|
unsigned NumOfVarIndices = 0;
|
|
Value *Ptrs = GEP->getPointerOperand();
|
|
if (Ptrs->getType()->isVectorTy() && !getSplatValue(Ptrs))
|
|
return IndexSize;
|
|
for (unsigned i = 1; i < GEP->getNumOperands(); ++i) {
|
|
if (isa<Constant>(GEP->getOperand(i)))
|
|
continue;
|
|
Type *IndxTy = GEP->getOperand(i)->getType();
|
|
if (IndxTy->isVectorTy())
|
|
IndxTy = IndxTy->getVectorElementType();
|
|
if ((IndxTy->getPrimitiveSizeInBits() == 64 &&
|
|
!isa<SExtInst>(GEP->getOperand(i))) ||
|
|
++NumOfVarIndices > 1)
|
|
return IndexSize; // 64
|
|
}
|
|
return (unsigned)32;
|
|
};
|
|
|
|
|
|
// Trying to reduce IndexSize to 32 bits for vector 16.
|
|
// By default the IndexSize is equal to pointer size.
|
|
unsigned IndexSize = (ST->hasAVX512() && VF >= 16)
|
|
? getIndexSizeInBits(Ptr, DL)
|
|
: DL.getPointerSizeInBits();
|
|
|
|
Type *IndexVTy = VectorType::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
|
|
Type *SplitSrcTy = VectorType::get(SrcVTy->getScalarType(), VF / SplitFactor);
|
|
return SplitFactor * getGSVectorCost(Opcode, SplitSrcTy, Ptr, Alignment,
|
|
AddressSpace);
|
|
}
|
|
|
|
// The gather / scatter cost is given by Intel architects. It is a rough
|
|
// number since we are looking at one instruction in a time.
|
|
const int GSOverhead = (Opcode == Instruction::Load)
|
|
? ST->getGatherOverhead()
|
|
: ST->getScatterOverhead();
|
|
return GSOverhead + VF * getMemoryOpCost(Opcode, SrcVTy->getScalarType(),
|
|
MaybeAlign(Alignment), AddressSpace);
|
|
}
|
|
|
|
/// Return the cost of full scalarization of gather / scatter operation.
|
|
///
|
|
/// Opcode - Load or Store instruction.
|
|
/// SrcVTy - The type of the data vector that should be gathered or scattered.
|
|
/// VariableMask - The mask is non-constant at compile time.
|
|
/// Alignment - Alignment for one element.
|
|
/// AddressSpace - pointer[s] address space.
|
|
///
|
|
int X86TTIImpl::getGSScalarCost(unsigned Opcode, Type *SrcVTy,
|
|
bool VariableMask, unsigned Alignment,
|
|
unsigned AddressSpace) {
|
|
unsigned VF = SrcVTy->getVectorNumElements();
|
|
|
|
int MaskUnpackCost = 0;
|
|
if (VariableMask) {
|
|
VectorType *MaskTy =
|
|
VectorType::get(Type::getInt1Ty(SrcVTy->getContext()), VF);
|
|
MaskUnpackCost = getScalarizationOverhead(MaskTy, false, true);
|
|
int ScalarCompareCost =
|
|
getCmpSelInstrCost(Instruction::ICmp, Type::getInt1Ty(SrcVTy->getContext()),
|
|
nullptr);
|
|
int BranchCost = getCFInstrCost(Instruction::Br);
|
|
MaskUnpackCost += VF * (BranchCost + ScalarCompareCost);
|
|
}
|
|
|
|
// The cost of the scalar loads/stores.
|
|
int MemoryOpCost = VF * getMemoryOpCost(Opcode, SrcVTy->getScalarType(),
|
|
MaybeAlign(Alignment), AddressSpace);
|
|
|
|
int InsertExtractCost = 0;
|
|
if (Opcode == Instruction::Load)
|
|
for (unsigned i = 0; i < VF; ++i)
|
|
// Add the cost of inserting each scalar load into the vector
|
|
InsertExtractCost +=
|
|
getVectorInstrCost(Instruction::InsertElement, SrcVTy, i);
|
|
else
|
|
for (unsigned i = 0; i < VF; ++i)
|
|
// Add the cost of extracting each element out of the data vector
|
|
InsertExtractCost +=
|
|
getVectorInstrCost(Instruction::ExtractElement, SrcVTy, i);
|
|
|
|
return MemoryOpCost + MaskUnpackCost + InsertExtractCost;
|
|
}
|
|
|
|
/// Calculate the cost of Gather / Scatter operation
|
|
int X86TTIImpl::getGatherScatterOpCost(unsigned Opcode, Type *SrcVTy,
|
|
Value *Ptr, bool VariableMask,
|
|
unsigned Alignment) {
|
|
assert(SrcVTy->isVectorTy() && "Unexpected data type for Gather/Scatter");
|
|
unsigned VF = SrcVTy->getVectorNumElements();
|
|
PointerType *PtrTy = dyn_cast<PointerType>(Ptr->getType());
|
|
if (!PtrTy && Ptr->getType()->isVectorTy())
|
|
PtrTy = dyn_cast<PointerType>(Ptr->getType()->getVectorElementType());
|
|
assert(PtrTy && "Unexpected type for Ptr argument");
|
|
unsigned AddressSpace = PtrTy->getAddressSpace();
|
|
|
|
bool Scalarize = false;
|
|
if ((Opcode == Instruction::Load &&
|
|
!isLegalMaskedGather(SrcVTy, MaybeAlign(Alignment))) ||
|
|
(Opcode == Instruction::Store &&
|
|
!isLegalMaskedScatter(SrcVTy, MaybeAlign(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, MaybeAlign Alignment) {
|
|
if (!ST->hasAVX())
|
|
return false;
|
|
|
|
// The backend can't handle a single element vector.
|
|
if (isa<VectorType>(DataTy) && DataTy->getVectorNumElements() == 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, MaybeAlign 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 (DataTy->getVectorNumElements() == 1)
|
|
return false;
|
|
|
|
Type *ScalarTy = DataTy->getVectorElementType();
|
|
|
|
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, MaybeAlign 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 (isa<VectorType>(DataTy)) {
|
|
unsigned NumElts = DataTy->getVectorNumElements();
|
|
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, MaybeAlign 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.
|
|
// FIXME Look at the arguments and only consider 512 bit or larger vectors?
|
|
const TargetMachine &TM = getTLI()->getTargetMachine();
|
|
|
|
return TM.getSubtarget<X86Subtarget>(*Caller).useAVX512Regs() ==
|
|
TM.getSubtarget<X86Subtarget>(*Callee).useAVX512Regs();
|
|
}
|
|
|
|
X86TTIImpl::TTI::MemCmpExpansionOptions
|
|
X86TTIImpl::enableMemCmpExpansion(bool OptSize, bool IsZeroCmp) const {
|
|
TTI::MemCmpExpansionOptions Options;
|
|
Options.MaxNumLoads = TLI->getMaxExpandSizeMemcmp(OptSize);
|
|
Options.NumLoadsPerBlock = 2;
|
|
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);
|
|
// All GPR and vector loads can be unaligned.
|
|
Options.AllowOverlappingLoads = true;
|
|
}
|
|
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, Type *VecTy,
|
|
unsigned Factor,
|
|
ArrayRef<unsigned> Indices,
|
|
unsigned Alignment,
|
|
unsigned AddressSpace,
|
|
bool UseMaskForCond,
|
|
bool UseMaskForGaps) {
|
|
|
|
if (UseMaskForCond || UseMaskForGaps)
|
|
return BaseT::getInterleavedMemoryOpCost(Opcode, VecTy, Factor, Indices,
|
|
Alignment, AddressSpace,
|
|
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);
|
|
|
|
// 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);
|
|
|
|
unsigned VF = VecTy->getVectorNumElements() / Factor;
|
|
Type *ScalarTy = VecTy->getVectorElementType();
|
|
|
|
// 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.
|
|
Type *SingleMemOpTy = VectorType::get(VecTy->getVectorElementType(),
|
|
LegalVT.getVectorNumElements());
|
|
unsigned MemOpCost = getMemoryOpCost(Opcode, SingleMemOpTy,
|
|
MaybeAlign(Alignment), AddressSpace);
|
|
|
|
VectorType *VT = VectorType::get(ScalarTy, VF);
|
|
EVT ETy = TLI->getValueType(DL, VT);
|
|
if (!ETy.isSimple())
|
|
return BaseT::getInterleavedMemoryOpCost(Opcode, VecTy, Factor, Indices,
|
|
Alignment, AddressSpace);
|
|
|
|
// 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[] = {
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{ 2, MVT::v4i64, 6 }, //interleave into 2 x 4i64 into 8i64 (and store)
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{ 2, MVT::v4f64, 6 }, //interleave into 2 x 4f64 into 8f64 (and store)
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{ 3, MVT::v2i8, 7 }, //interleave 3 x 2i8 into 6i8 (and store)
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{ 3, MVT::v4i8, 8 }, //interleave 3 x 4i8 into 12i8 (and store)
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{ 3, MVT::v8i8, 11 }, //interleave 3 x 8i8 into 24i8 (and store)
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{ 3, MVT::v16i8, 11 }, //interleave 3 x 16i8 into 48i8 (and store)
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{ 3, MVT::v32i8, 13 }, //interleave 3 x 32i8 into 96i8 (and store)
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|
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{ 4, MVT::v2i8, 12 }, //interleave 4 x 2i8 into 8i8 (and store)
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{ 4, MVT::v4i8, 9 }, //interleave 4 x 4i8 into 16i8 (and store)
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{ 4, MVT::v8i8, 10 }, //interleave 4 x 8i8 into 32i8 (and store)
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{ 4, MVT::v16i8, 10 }, //interleave 4 x 16i8 into 64i8 (and store)
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{ 4, MVT::v32i8, 12 } //interleave 4 x 32i8 into 128i8 (and store)
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};
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if (Opcode == Instruction::Load) {
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if (const auto *Entry =
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CostTableLookup(AVX2InterleavedLoadTbl, Factor, ETy.getSimpleVT()))
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return NumOfMemOps * MemOpCost + Entry->Cost;
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} else {
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assert(Opcode == Instruction::Store &&
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"Expected Store Instruction at this point");
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if (const auto *Entry =
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CostTableLookup(AVX2InterleavedStoreTbl, Factor, ETy.getSimpleVT()))
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return NumOfMemOps * MemOpCost + Entry->Cost;
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}
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|
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return BaseT::getInterleavedMemoryOpCost(Opcode, VecTy, Factor, Indices,
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Alignment, AddressSpace);
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}
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|
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// Get estimation for interleaved load/store operations and strided load.
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// \p Indices contains indices for strided load.
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// \p Factor - the factor of interleaving.
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// AVX-512 provides 3-src shuffles that significantly reduces the cost.
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int X86TTIImpl::getInterleavedMemoryOpCostAVX512(unsigned Opcode, Type *VecTy,
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unsigned Factor,
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ArrayRef<unsigned> Indices,
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unsigned Alignment,
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unsigned AddressSpace,
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bool UseMaskForCond,
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bool UseMaskForGaps) {
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|
|
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if (UseMaskForCond || UseMaskForGaps)
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return BaseT::getInterleavedMemoryOpCost(Opcode, VecTy, Factor, Indices,
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|
Alignment, AddressSpace,
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|
UseMaskForCond, UseMaskForGaps);
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|
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|
// VecTy for interleave memop is <VF*Factor x Elt>.
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// So, for VF=4, Interleave Factor = 3, Element type = i32 we have
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// VecTy = <12 x i32>.
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|
|
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// Calculate the number of memory operations (NumOfMemOps), required
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|
// for load/store the VecTy.
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MVT LegalVT = getTLI()->getTypeLegalizationCost(DL, VecTy).second;
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unsigned VecTySize = DL.getTypeStoreSize(VecTy);
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unsigned LegalVTSize = LegalVT.getStoreSize();
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unsigned NumOfMemOps = (VecTySize + LegalVTSize - 1) / LegalVTSize;
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|
|
|
// Get the cost of one memory operation.
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Type *SingleMemOpTy = VectorType::get(VecTy->getVectorElementType(),
|
|
LegalVT.getVectorNumElements());
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unsigned MemOpCost = getMemoryOpCost(Opcode, SingleMemOpTy,
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|
MaybeAlign(Alignment), AddressSpace);
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|
|
|
unsigned VF = VecTy->getVectorNumElements() / Factor;
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|
MVT VT = MVT::getVectorVT(MVT::getVT(VecTy->getScalarType()), VF);
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|
|
|
if (Opcode == Instruction::Load) {
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// 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;
|
|
Type *ResultTy = VectorType::get(VecTy->getVectorElementType(),
|
|
VecTy->getVectorNumElements() / 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,
|
|
unsigned Alignment,
|
|
unsigned AddressSpace,
|
|
bool UseMaskForCond,
|
|
bool UseMaskForGaps) {
|
|
auto isSupportedOnAVX512 = [](Type *VecTy, bool HasBW) {
|
|
Type *EltTy = VecTy->getVectorElementType();
|
|
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, VecTy, Factor, Indices,
|
|
Alignment, AddressSpace,
|
|
UseMaskForCond, UseMaskForGaps);
|
|
if (ST->hasAVX2())
|
|
return getInterleavedMemoryOpCostAVX2(Opcode, VecTy, Factor, Indices,
|
|
Alignment, AddressSpace,
|
|
UseMaskForCond, UseMaskForGaps);
|
|
|
|
return BaseT::getInterleavedMemoryOpCost(Opcode, VecTy, Factor, Indices,
|
|
Alignment, AddressSpace,
|
|
UseMaskForCond, UseMaskForGaps);
|
|
}
|