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For more details about these instructions, please refer to the latest ISE document: https://software.intel.com/en-us/download/intel-architecture-instruction-set-extensions-programming-reference. Reviewed By: craig.topper Differential Revision: https://reviews.llvm.org/D89102
644 lines
28 KiB
C++
644 lines
28 KiB
C++
//===-- X86TargetParser - Parser for X86 features ---------------*- C++ -*-===//
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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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//
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// This file implements a target parser to recognise X86 hardware features.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/X86TargetParser.h"
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#include "llvm/ADT/StringSwitch.h"
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#include "llvm/ADT/Triple.h"
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using namespace llvm;
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using namespace llvm::X86;
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namespace {
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/// Container class for CPU features.
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/// This is a constexpr reimplementation of a subset of std::bitset. It would be
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/// nice to use std::bitset directly, but it doesn't support constant
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/// initialization.
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class FeatureBitset {
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static constexpr unsigned NUM_FEATURE_WORDS =
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(X86::CPU_FEATURE_MAX + 31) / 32;
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// This cannot be a std::array, operator[] is not constexpr until C++17.
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uint32_t Bits[NUM_FEATURE_WORDS] = {};
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public:
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constexpr FeatureBitset() = default;
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constexpr FeatureBitset(std::initializer_list<unsigned> Init) {
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for (auto I : Init)
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set(I);
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}
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bool any() const {
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return llvm::any_of(Bits, [](uint64_t V) { return V != 0; });
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}
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constexpr FeatureBitset &set(unsigned I) {
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// GCC <6.2 crashes if this is written in a single statement.
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uint32_t NewBits = Bits[I / 32] | (uint32_t(1) << (I % 32));
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Bits[I / 32] = NewBits;
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return *this;
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}
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constexpr bool operator[](unsigned I) const {
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uint32_t Mask = uint32_t(1) << (I % 32);
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return (Bits[I / 32] & Mask) != 0;
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}
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constexpr FeatureBitset &operator&=(const FeatureBitset &RHS) {
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for (unsigned I = 0, E = array_lengthof(Bits); I != E; ++I) {
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// GCC <6.2 crashes if this is written in a single statement.
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uint32_t NewBits = Bits[I] & RHS.Bits[I];
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Bits[I] = NewBits;
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}
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return *this;
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}
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constexpr FeatureBitset &operator|=(const FeatureBitset &RHS) {
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for (unsigned I = 0, E = array_lengthof(Bits); I != E; ++I) {
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// GCC <6.2 crashes if this is written in a single statement.
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uint32_t NewBits = Bits[I] | RHS.Bits[I];
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Bits[I] = NewBits;
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}
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return *this;
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}
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// gcc 5.3 miscompiles this if we try to write this using operator&=.
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constexpr FeatureBitset operator&(const FeatureBitset &RHS) const {
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FeatureBitset Result;
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for (unsigned I = 0, E = array_lengthof(Bits); I != E; ++I)
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Result.Bits[I] = Bits[I] & RHS.Bits[I];
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return Result;
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}
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// gcc 5.3 miscompiles this if we try to write this using operator&=.
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constexpr FeatureBitset operator|(const FeatureBitset &RHS) const {
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FeatureBitset Result;
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for (unsigned I = 0, E = array_lengthof(Bits); I != E; ++I)
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Result.Bits[I] = Bits[I] | RHS.Bits[I];
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return Result;
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}
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constexpr FeatureBitset operator~() const {
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FeatureBitset Result;
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for (unsigned I = 0, E = array_lengthof(Bits); I != E; ++I)
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Result.Bits[I] = ~Bits[I];
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return Result;
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}
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constexpr bool operator!=(const FeatureBitset &RHS) const {
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for (unsigned I = 0, E = array_lengthof(Bits); I != E; ++I)
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if (Bits[I] != RHS.Bits[I])
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return true;
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return false;
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}
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};
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struct ProcInfo {
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StringLiteral Name;
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X86::CPUKind Kind;
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unsigned KeyFeature;
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FeatureBitset Features;
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};
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struct FeatureInfo {
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StringLiteral Name;
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FeatureBitset ImpliedFeatures;
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};
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} // end anonymous namespace
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#define X86_FEATURE(ENUM, STRING) \
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constexpr FeatureBitset Feature##ENUM = {X86::FEATURE_##ENUM};
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#include "llvm/Support/X86TargetParser.def"
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// Pentium with MMX.
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constexpr FeatureBitset FeaturesPentiumMMX =
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FeatureX87 | FeatureCMPXCHG8B | FeatureMMX;
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// Pentium 2 and 3.
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constexpr FeatureBitset FeaturesPentium2 =
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FeatureX87 | FeatureCMPXCHG8B | FeatureMMX | FeatureFXSR;
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constexpr FeatureBitset FeaturesPentium3 = FeaturesPentium2 | FeatureSSE;
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// Pentium 4 CPUs
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constexpr FeatureBitset FeaturesPentium4 = FeaturesPentium3 | FeatureSSE2;
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constexpr FeatureBitset FeaturesPrescott = FeaturesPentium4 | FeatureSSE3;
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constexpr FeatureBitset FeaturesNocona =
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FeaturesPrescott | Feature64BIT | FeatureCMPXCHG16B;
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// Basic 64-bit capable CPU.
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constexpr FeatureBitset FeaturesX86_64 = FeaturesPentium4 | Feature64BIT;
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constexpr FeatureBitset FeaturesX86_64_V2 = FeaturesX86_64 | FeatureSAHF |
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FeaturePOPCNT | FeatureSSE4_2 |
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FeatureCMPXCHG16B;
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constexpr FeatureBitset FeaturesX86_64_V3 =
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FeaturesX86_64_V2 | FeatureAVX2 | FeatureBMI | FeatureBMI2 | FeatureF16C |
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FeatureFMA | FeatureLZCNT | FeatureMOVBE | FeatureXSAVE;
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constexpr FeatureBitset FeaturesX86_64_V4 = FeaturesX86_64_V3 |
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FeatureAVX512BW | FeatureAVX512CD |
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FeatureAVX512DQ | FeatureAVX512VL;
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// Intel Core CPUs
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constexpr FeatureBitset FeaturesCore2 =
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FeaturesNocona | FeatureSAHF | FeatureSSSE3;
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constexpr FeatureBitset FeaturesPenryn = FeaturesCore2 | FeatureSSE4_1;
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constexpr FeatureBitset FeaturesNehalem =
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FeaturesPenryn | FeaturePOPCNT | FeatureSSE4_2;
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constexpr FeatureBitset FeaturesWestmere = FeaturesNehalem | FeaturePCLMUL;
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constexpr FeatureBitset FeaturesSandyBridge =
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FeaturesWestmere | FeatureAVX | FeatureXSAVE | FeatureXSAVEOPT;
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constexpr FeatureBitset FeaturesIvyBridge =
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FeaturesSandyBridge | FeatureF16C | FeatureFSGSBASE | FeatureRDRND;
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constexpr FeatureBitset FeaturesHaswell =
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FeaturesIvyBridge | FeatureAVX2 | FeatureBMI | FeatureBMI2 | FeatureFMA |
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FeatureINVPCID | FeatureLZCNT | FeatureMOVBE;
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constexpr FeatureBitset FeaturesBroadwell =
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FeaturesHaswell | FeatureADX | FeaturePRFCHW | FeatureRDSEED;
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// Intel Knights Landing and Knights Mill
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// Knights Landing has feature parity with Broadwell.
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constexpr FeatureBitset FeaturesKNL =
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FeaturesBroadwell | FeatureAES | FeatureAVX512F | FeatureAVX512CD |
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FeatureAVX512ER | FeatureAVX512PF | FeaturePREFETCHWT1;
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constexpr FeatureBitset FeaturesKNM = FeaturesKNL | FeatureAVX512VPOPCNTDQ;
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// Intel Skylake processors.
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constexpr FeatureBitset FeaturesSkylakeClient =
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FeaturesBroadwell | FeatureAES | FeatureCLFLUSHOPT | FeatureXSAVEC |
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FeatureXSAVES | FeatureSGX;
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// SkylakeServer inherits all SkylakeClient features except SGX.
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// FIXME: That doesn't match gcc.
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constexpr FeatureBitset FeaturesSkylakeServer =
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(FeaturesSkylakeClient & ~FeatureSGX) | FeatureAVX512F | FeatureAVX512CD |
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FeatureAVX512DQ | FeatureAVX512BW | FeatureAVX512VL | FeatureCLWB |
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FeaturePKU;
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constexpr FeatureBitset FeaturesCascadeLake =
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FeaturesSkylakeServer | FeatureAVX512VNNI;
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constexpr FeatureBitset FeaturesCooperLake =
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FeaturesCascadeLake | FeatureAVX512BF16;
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// Intel 10nm processors.
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constexpr FeatureBitset FeaturesCannonlake =
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FeaturesSkylakeClient | FeatureAVX512F | FeatureAVX512CD | FeatureAVX512DQ |
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FeatureAVX512BW | FeatureAVX512VL | FeatureAVX512IFMA | FeatureAVX512VBMI |
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FeaturePKU | FeatureSHA;
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constexpr FeatureBitset FeaturesICLClient =
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FeaturesCannonlake | FeatureAVX512BITALG | FeatureAVX512VBMI2 |
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FeatureAVX512VNNI | FeatureAVX512VPOPCNTDQ | FeatureCLWB | FeatureGFNI |
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FeatureRDPID | FeatureVAES | FeatureVPCLMULQDQ;
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constexpr FeatureBitset FeaturesICLServer =
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FeaturesICLClient | FeaturePCONFIG | FeatureWBNOINVD;
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constexpr FeatureBitset FeaturesTigerlake =
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FeaturesICLClient | FeatureAVX512VP2INTERSECT | FeatureMOVDIR64B |
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FeatureMOVDIRI | FeatureSHSTK | FeatureKL | FeatureWIDEKL;
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constexpr FeatureBitset FeaturesSapphireRapids =
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FeaturesICLServer | FeatureAMX_TILE | FeatureAMX_INT8 | FeatureAMX_BF16 |
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FeatureAVX512BF16 | FeatureAVX512VP2INTERSECT | FeatureCLDEMOTE |
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FeatureENQCMD | FeatureMOVDIR64B | FeatureMOVDIRI | FeaturePTWRITE |
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FeatureSERIALIZE | FeatureSHSTK | FeatureTSXLDTRK | FeatureWAITPKG;
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// Intel Atom processors.
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// Bonnell has feature parity with Core2 and adds MOVBE.
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constexpr FeatureBitset FeaturesBonnell = FeaturesCore2 | FeatureMOVBE;
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// Silvermont has parity with Westmere and Bonnell plus PRFCHW and RDRND.
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constexpr FeatureBitset FeaturesSilvermont =
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FeaturesBonnell | FeaturesWestmere | FeaturePRFCHW | FeatureRDRND;
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constexpr FeatureBitset FeaturesGoldmont =
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FeaturesSilvermont | FeatureAES | FeatureCLFLUSHOPT | FeatureFSGSBASE |
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FeatureRDSEED | FeatureSHA | FeatureXSAVE | FeatureXSAVEC |
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FeatureXSAVEOPT | FeatureXSAVES;
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constexpr FeatureBitset FeaturesGoldmontPlus =
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FeaturesGoldmont | FeaturePTWRITE | FeatureRDPID | FeatureSGX;
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constexpr FeatureBitset FeaturesTremont =
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FeaturesGoldmontPlus | FeatureCLWB | FeatureGFNI;
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// Geode Processor.
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constexpr FeatureBitset FeaturesGeode =
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FeatureX87 | FeatureCMPXCHG8B | FeatureMMX | Feature3DNOW | Feature3DNOWA;
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// K6 processor.
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constexpr FeatureBitset FeaturesK6 = FeatureX87 | FeatureCMPXCHG8B | FeatureMMX;
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// K7 and K8 architecture processors.
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constexpr FeatureBitset FeaturesAthlon =
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FeatureX87 | FeatureCMPXCHG8B | FeatureMMX | Feature3DNOW | Feature3DNOWA;
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constexpr FeatureBitset FeaturesAthlonXP =
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FeaturesAthlon | FeatureFXSR | FeatureSSE;
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constexpr FeatureBitset FeaturesK8 =
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FeaturesAthlonXP | FeatureSSE2 | Feature64BIT;
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constexpr FeatureBitset FeaturesK8SSE3 = FeaturesK8 | FeatureSSE3;
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constexpr FeatureBitset FeaturesAMDFAM10 =
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FeaturesK8SSE3 | FeatureCMPXCHG16B | FeatureLZCNT | FeaturePOPCNT |
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FeaturePRFCHW | FeatureSAHF | FeatureSSE4_A;
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// Bobcat architecture processors.
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constexpr FeatureBitset FeaturesBTVER1 =
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FeatureX87 | FeatureCMPXCHG8B | FeatureCMPXCHG16B | Feature64BIT |
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FeatureFXSR | FeatureLZCNT | FeatureMMX | FeaturePOPCNT | FeaturePRFCHW |
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FeatureSSE | FeatureSSE2 | FeatureSSE3 | FeatureSSSE3 | FeatureSSE4_A |
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FeatureSAHF;
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constexpr FeatureBitset FeaturesBTVER2 =
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FeaturesBTVER1 | FeatureAES | FeatureAVX | FeatureBMI | FeatureF16C |
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FeatureMOVBE | FeaturePCLMUL | FeatureXSAVE | FeatureXSAVEOPT;
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// AMD Bulldozer architecture processors.
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constexpr FeatureBitset FeaturesBDVER1 =
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FeatureX87 | FeatureAES | FeatureAVX | FeatureCMPXCHG8B |
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FeatureCMPXCHG16B | Feature64BIT | FeatureFMA4 | FeatureFXSR | FeatureLWP |
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FeatureLZCNT | FeatureMMX | FeaturePCLMUL | FeaturePOPCNT | FeaturePRFCHW |
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FeatureSAHF | FeatureSSE | FeatureSSE2 | FeatureSSE3 | FeatureSSSE3 |
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FeatureSSE4_1 | FeatureSSE4_2 | FeatureSSE4_A | FeatureXOP | FeatureXSAVE;
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constexpr FeatureBitset FeaturesBDVER2 =
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FeaturesBDVER1 | FeatureBMI | FeatureFMA | FeatureF16C | FeatureTBM;
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constexpr FeatureBitset FeaturesBDVER3 =
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FeaturesBDVER2 | FeatureFSGSBASE | FeatureXSAVEOPT;
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constexpr FeatureBitset FeaturesBDVER4 = FeaturesBDVER3 | FeatureAVX2 |
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FeatureBMI2 | FeatureMOVBE |
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FeatureMWAITX | FeatureRDRND;
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// AMD Zen architecture processors.
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constexpr FeatureBitset FeaturesZNVER1 =
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FeatureX87 | FeatureADX | FeatureAES | FeatureAVX | FeatureAVX2 |
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FeatureBMI | FeatureBMI2 | FeatureCLFLUSHOPT | FeatureCLZERO |
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FeatureCMPXCHG8B | FeatureCMPXCHG16B | Feature64BIT | FeatureF16C |
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FeatureFMA | FeatureFSGSBASE | FeatureFXSR | FeatureLZCNT | FeatureMMX |
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FeatureMOVBE | FeatureMWAITX | FeaturePCLMUL | FeaturePOPCNT |
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FeaturePRFCHW | FeatureRDRND | FeatureRDSEED | FeatureSAHF | FeatureSHA |
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FeatureSSE | FeatureSSE2 | FeatureSSE3 | FeatureSSSE3 | FeatureSSE4_1 |
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FeatureSSE4_2 | FeatureSSE4_A | FeatureXSAVE | FeatureXSAVEC |
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FeatureXSAVEOPT | FeatureXSAVES;
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constexpr FeatureBitset FeaturesZNVER2 =
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FeaturesZNVER1 | FeatureCLWB | FeatureRDPID | FeatureWBNOINVD;
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constexpr ProcInfo Processors[] = {
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// Empty processor. Include X87 and CMPXCHG8 for backwards compatibility.
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{ {""}, CK_None, ~0U, FeatureX87 | FeatureCMPXCHG8B },
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// i386-generation processors.
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{ {"i386"}, CK_i386, ~0U, FeatureX87 },
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// i486-generation processors.
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{ {"i486"}, CK_i486, ~0U, FeatureX87 },
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{ {"winchip-c6"}, CK_WinChipC6, ~0U, FeaturesPentiumMMX },
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{ {"winchip2"}, CK_WinChip2, ~0U, FeaturesPentiumMMX | Feature3DNOW },
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{ {"c3"}, CK_C3, ~0U, FeaturesPentiumMMX | Feature3DNOW },
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// i586-generation processors, P5 microarchitecture based.
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{ {"i586"}, CK_i586, ~0U, FeatureX87 | FeatureCMPXCHG8B },
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{ {"pentium"}, CK_Pentium, ~0U, FeatureX87 | FeatureCMPXCHG8B },
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{ {"pentium-mmx"}, CK_PentiumMMX, ~0U, FeaturesPentiumMMX },
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// i686-generation processors, P6 / Pentium M microarchitecture based.
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{ {"pentiumpro"}, CK_PentiumPro, ~0U, FeatureX87 | FeatureCMPXCHG8B },
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{ {"i686"}, CK_i686, ~0U, FeatureX87 | FeatureCMPXCHG8B },
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{ {"pentium2"}, CK_Pentium2, ~0U, FeaturesPentium2 },
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{ {"pentium3"}, CK_Pentium3, ~0U, FeaturesPentium3 },
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{ {"pentium3m"}, CK_Pentium3, ~0U, FeaturesPentium3 },
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{ {"pentium-m"}, CK_PentiumM, ~0U, FeaturesPentium4 },
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{ {"c3-2"}, CK_C3_2, ~0U, FeaturesPentium3 },
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{ {"yonah"}, CK_Yonah, ~0U, FeaturesPrescott },
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// Netburst microarchitecture based processors.
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{ {"pentium4"}, CK_Pentium4, ~0U, FeaturesPentium4 },
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{ {"pentium4m"}, CK_Pentium4, ~0U, FeaturesPentium4 },
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{ {"prescott"}, CK_Prescott, ~0U, FeaturesPrescott },
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{ {"nocona"}, CK_Nocona, ~0U, FeaturesNocona },
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// Core microarchitecture based processors.
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{ {"core2"}, CK_Core2, ~0U, FeaturesCore2 },
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{ {"penryn"}, CK_Penryn, ~0U, FeaturesPenryn },
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// Atom processors
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{ {"bonnell"}, CK_Bonnell, FEATURE_SSSE3, FeaturesBonnell },
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{ {"atom"}, CK_Bonnell, FEATURE_SSSE3, FeaturesBonnell },
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{ {"silvermont"}, CK_Silvermont, FEATURE_SSE4_2, FeaturesSilvermont },
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{ {"slm"}, CK_Silvermont, FEATURE_SSE4_2, FeaturesSilvermont },
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{ {"goldmont"}, CK_Goldmont, FEATURE_SSE4_2, FeaturesGoldmont },
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{ {"goldmont-plus"}, CK_GoldmontPlus, FEATURE_SSE4_2, FeaturesGoldmontPlus },
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{ {"tremont"}, CK_Tremont, FEATURE_SSE4_2, FeaturesTremont },
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// Nehalem microarchitecture based processors.
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{ {"nehalem"}, CK_Nehalem, FEATURE_SSE4_2, FeaturesNehalem },
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{ {"corei7"}, CK_Nehalem, FEATURE_SSE4_2, FeaturesNehalem },
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// Westmere microarchitecture based processors.
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{ {"westmere"}, CK_Westmere, FEATURE_PCLMUL, FeaturesWestmere },
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// Sandy Bridge microarchitecture based processors.
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{ {"sandybridge"}, CK_SandyBridge, FEATURE_AVX, FeaturesSandyBridge },
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{ {"corei7-avx"}, CK_SandyBridge, FEATURE_AVX, FeaturesSandyBridge },
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// Ivy Bridge microarchitecture based processors.
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{ {"ivybridge"}, CK_IvyBridge, FEATURE_AVX, FeaturesIvyBridge },
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{ {"core-avx-i"}, CK_IvyBridge, FEATURE_AVX, FeaturesIvyBridge },
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// Haswell microarchitecture based processors.
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{ {"haswell"}, CK_Haswell, FEATURE_AVX2, FeaturesHaswell },
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{ {"core-avx2"}, CK_Haswell, FEATURE_AVX2, FeaturesHaswell },
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// Broadwell microarchitecture based processors.
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{ {"broadwell"}, CK_Broadwell, FEATURE_AVX2, FeaturesBroadwell },
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// Skylake client microarchitecture based processors.
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{ {"skylake"}, CK_SkylakeClient, FEATURE_AVX2, FeaturesSkylakeClient },
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// Skylake server microarchitecture based processors.
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{ {"skylake-avx512"}, CK_SkylakeServer, FEATURE_AVX512F, FeaturesSkylakeServer },
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{ {"skx"}, CK_SkylakeServer, FEATURE_AVX512F, FeaturesSkylakeServer },
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// Cascadelake Server microarchitecture based processors.
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{ {"cascadelake"}, CK_Cascadelake, FEATURE_AVX512VNNI, FeaturesCascadeLake },
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// Cooperlake Server microarchitecture based processors.
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{ {"cooperlake"}, CK_Cooperlake, FEATURE_AVX512BF16, FeaturesCooperLake },
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// Cannonlake client microarchitecture based processors.
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{ {"cannonlake"}, CK_Cannonlake, FEATURE_AVX512VBMI, FeaturesCannonlake },
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// Icelake client microarchitecture based processors.
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{ {"icelake-client"}, CK_IcelakeClient, FEATURE_AVX512VBMI2, FeaturesICLClient },
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// Icelake server microarchitecture based processors.
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{ {"icelake-server"}, CK_IcelakeServer, FEATURE_AVX512VBMI2, FeaturesICLServer },
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// Tigerlake microarchitecture based processors.
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{ {"tigerlake"}, CK_Tigerlake, FEATURE_AVX512VP2INTERSECT, FeaturesTigerlake },
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// Sapphire Rapids microarchitecture based processors.
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{ {"sapphirerapids"}, CK_SapphireRapids, FEATURE_AVX512VP2INTERSECT, FeaturesSapphireRapids },
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// Knights Landing processor.
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{ {"knl"}, CK_KNL, FEATURE_AVX512F, FeaturesKNL },
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// Knights Mill processor.
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{ {"knm"}, CK_KNM, FEATURE_AVX5124FMAPS, FeaturesKNM },
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// Lakemont microarchitecture based processors.
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{ {"lakemont"}, CK_Lakemont, ~0U, FeatureCMPXCHG8B },
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// K6 architecture processors.
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{ {"k6"}, CK_K6, ~0U, FeaturesK6 },
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{ {"k6-2"}, CK_K6_2, ~0U, FeaturesK6 | Feature3DNOW },
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{ {"k6-3"}, CK_K6_3, ~0U, FeaturesK6 | Feature3DNOW },
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// K7 architecture processors.
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{ {"athlon"}, CK_Athlon, ~0U, FeaturesAthlon },
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{ {"athlon-tbird"}, CK_Athlon, ~0U, FeaturesAthlon },
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{ {"athlon-xp"}, CK_AthlonXP, ~0U, FeaturesAthlonXP },
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{ {"athlon-mp"}, CK_AthlonXP, ~0U, FeaturesAthlonXP },
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{ {"athlon-4"}, CK_AthlonXP, ~0U, FeaturesAthlonXP },
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// K8 architecture processors.
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{ {"k8"}, CK_K8, ~0U, FeaturesK8 },
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{ {"athlon64"}, CK_K8, ~0U, FeaturesK8 },
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{ {"athlon-fx"}, CK_K8, ~0U, FeaturesK8 },
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{ {"opteron"}, CK_K8, ~0U, FeaturesK8 },
|
|
{ {"k8-sse3"}, CK_K8SSE3, ~0U, FeaturesK8SSE3 },
|
|
{ {"athlon64-sse3"}, CK_K8SSE3, ~0U, FeaturesK8SSE3 },
|
|
{ {"opteron-sse3"}, CK_K8SSE3, ~0U, FeaturesK8SSE3 },
|
|
{ {"amdfam10"}, CK_AMDFAM10, FEATURE_SSE4_A, FeaturesAMDFAM10 },
|
|
{ {"barcelona"}, CK_AMDFAM10, FEATURE_SSE4_A, FeaturesAMDFAM10 },
|
|
// Bobcat architecture processors.
|
|
{ {"btver1"}, CK_BTVER1, FEATURE_SSE4_A, FeaturesBTVER1 },
|
|
{ {"btver2"}, CK_BTVER2, FEATURE_BMI, FeaturesBTVER2 },
|
|
// Bulldozer architecture processors.
|
|
{ {"bdver1"}, CK_BDVER1, FEATURE_XOP, FeaturesBDVER1 },
|
|
{ {"bdver2"}, CK_BDVER2, FEATURE_FMA, FeaturesBDVER2 },
|
|
{ {"bdver3"}, CK_BDVER3, FEATURE_FMA, FeaturesBDVER3 },
|
|
{ {"bdver4"}, CK_BDVER4, FEATURE_AVX2, FeaturesBDVER4 },
|
|
// Zen architecture processors.
|
|
{ {"znver1"}, CK_ZNVER1, FEATURE_AVX2, FeaturesZNVER1 },
|
|
{ {"znver2"}, CK_ZNVER2, FEATURE_AVX2, FeaturesZNVER2 },
|
|
// Generic 64-bit processor.
|
|
{ {"x86-64"}, CK_x86_64, ~0U, FeaturesX86_64 },
|
|
{ {"x86-64-v2"}, CK_x86_64_v2, ~0U, FeaturesX86_64_V2 },
|
|
{ {"x86-64-v3"}, CK_x86_64_v3, ~0U, FeaturesX86_64_V3 },
|
|
{ {"x86-64-v4"}, CK_x86_64_v4, ~0U, FeaturesX86_64_V4 },
|
|
// Geode processors.
|
|
{ {"geode"}, CK_Geode, ~0U, FeaturesGeode },
|
|
};
|
|
|
|
constexpr const char *NoTuneList[] = {"x86-64-v2", "x86-64-v3", "x86-64-v4"};
|
|
|
|
X86::CPUKind llvm::X86::parseArchX86(StringRef CPU, bool Only64Bit) {
|
|
for (const auto &P : Processors)
|
|
if (P.Name == CPU && (P.Features[FEATURE_64BIT] || !Only64Bit))
|
|
return P.Kind;
|
|
|
|
return CK_None;
|
|
}
|
|
|
|
X86::CPUKind llvm::X86::parseTuneCPU(StringRef CPU, bool Only64Bit) {
|
|
if (llvm::is_contained(NoTuneList, CPU))
|
|
return CK_None;
|
|
return parseArchX86(CPU, Only64Bit);
|
|
}
|
|
|
|
void llvm::X86::fillValidCPUArchList(SmallVectorImpl<StringRef> &Values,
|
|
bool Only64Bit) {
|
|
for (const auto &P : Processors)
|
|
if (!P.Name.empty() && (P.Features[FEATURE_64BIT] || !Only64Bit))
|
|
Values.emplace_back(P.Name);
|
|
}
|
|
|
|
void llvm::X86::fillValidTuneCPUList(SmallVectorImpl<StringRef> &Values,
|
|
bool Only64Bit) {
|
|
for (const ProcInfo &P : Processors)
|
|
if (!P.Name.empty() && (P.Features[FEATURE_64BIT] || !Only64Bit) &&
|
|
!llvm::is_contained(NoTuneList, P.Name))
|
|
Values.emplace_back(P.Name);
|
|
}
|
|
|
|
ProcessorFeatures llvm::X86::getKeyFeature(X86::CPUKind Kind) {
|
|
// FIXME: Can we avoid a linear search here? The table might be sorted by
|
|
// CPUKind so we could binary search?
|
|
for (const auto &P : Processors) {
|
|
if (P.Kind == Kind) {
|
|
assert(P.KeyFeature != ~0U && "Processor does not have a key feature.");
|
|
return static_cast<ProcessorFeatures>(P.KeyFeature);
|
|
}
|
|
}
|
|
|
|
llvm_unreachable("Unable to find CPU kind!");
|
|
}
|
|
|
|
// Features with no dependencies.
|
|
constexpr FeatureBitset ImpliedFeatures64BIT = {};
|
|
constexpr FeatureBitset ImpliedFeaturesADX = {};
|
|
constexpr FeatureBitset ImpliedFeaturesBMI = {};
|
|
constexpr FeatureBitset ImpliedFeaturesBMI2 = {};
|
|
constexpr FeatureBitset ImpliedFeaturesCLDEMOTE = {};
|
|
constexpr FeatureBitset ImpliedFeaturesCLFLUSHOPT = {};
|
|
constexpr FeatureBitset ImpliedFeaturesCLWB = {};
|
|
constexpr FeatureBitset ImpliedFeaturesCLZERO = {};
|
|
constexpr FeatureBitset ImpliedFeaturesCMOV = {};
|
|
constexpr FeatureBitset ImpliedFeaturesCMPXCHG16B = {};
|
|
constexpr FeatureBitset ImpliedFeaturesCMPXCHG8B = {};
|
|
constexpr FeatureBitset ImpliedFeaturesENQCMD = {};
|
|
constexpr FeatureBitset ImpliedFeaturesFSGSBASE = {};
|
|
constexpr FeatureBitset ImpliedFeaturesFXSR = {};
|
|
constexpr FeatureBitset ImpliedFeaturesINVPCID = {};
|
|
constexpr FeatureBitset ImpliedFeaturesLWP = {};
|
|
constexpr FeatureBitset ImpliedFeaturesLZCNT = {};
|
|
constexpr FeatureBitset ImpliedFeaturesMWAITX = {};
|
|
constexpr FeatureBitset ImpliedFeaturesMOVBE = {};
|
|
constexpr FeatureBitset ImpliedFeaturesMOVDIR64B = {};
|
|
constexpr FeatureBitset ImpliedFeaturesMOVDIRI = {};
|
|
constexpr FeatureBitset ImpliedFeaturesPCONFIG = {};
|
|
constexpr FeatureBitset ImpliedFeaturesPOPCNT = {};
|
|
constexpr FeatureBitset ImpliedFeaturesPKU = {};
|
|
constexpr FeatureBitset ImpliedFeaturesPREFETCHWT1 = {};
|
|
constexpr FeatureBitset ImpliedFeaturesPRFCHW = {};
|
|
constexpr FeatureBitset ImpliedFeaturesPTWRITE = {};
|
|
constexpr FeatureBitset ImpliedFeaturesRDPID = {};
|
|
constexpr FeatureBitset ImpliedFeaturesRDRND = {};
|
|
constexpr FeatureBitset ImpliedFeaturesRDSEED = {};
|
|
constexpr FeatureBitset ImpliedFeaturesRTM = {};
|
|
constexpr FeatureBitset ImpliedFeaturesSAHF = {};
|
|
constexpr FeatureBitset ImpliedFeaturesSERIALIZE = {};
|
|
constexpr FeatureBitset ImpliedFeaturesSGX = {};
|
|
constexpr FeatureBitset ImpliedFeaturesSHSTK = {};
|
|
constexpr FeatureBitset ImpliedFeaturesTBM = {};
|
|
constexpr FeatureBitset ImpliedFeaturesTSXLDTRK = {};
|
|
constexpr FeatureBitset ImpliedFeaturesWAITPKG = {};
|
|
constexpr FeatureBitset ImpliedFeaturesWBNOINVD = {};
|
|
constexpr FeatureBitset ImpliedFeaturesVZEROUPPER = {};
|
|
constexpr FeatureBitset ImpliedFeaturesX87 = {};
|
|
constexpr FeatureBitset ImpliedFeaturesXSAVE = {};
|
|
|
|
// Not really CPU features, but need to be in the table because clang uses
|
|
// target features to communicate them to the backend.
|
|
constexpr FeatureBitset ImpliedFeaturesRETPOLINE_EXTERNAL_THUNK = {};
|
|
constexpr FeatureBitset ImpliedFeaturesRETPOLINE_INDIRECT_BRANCHES = {};
|
|
constexpr FeatureBitset ImpliedFeaturesRETPOLINE_INDIRECT_CALLS = {};
|
|
constexpr FeatureBitset ImpliedFeaturesLVI_CFI = {};
|
|
constexpr FeatureBitset ImpliedFeaturesLVI_LOAD_HARDENING = {};
|
|
|
|
// XSAVE features are dependent on basic XSAVE.
|
|
constexpr FeatureBitset ImpliedFeaturesXSAVEC = FeatureXSAVE;
|
|
constexpr FeatureBitset ImpliedFeaturesXSAVEOPT = FeatureXSAVE;
|
|
constexpr FeatureBitset ImpliedFeaturesXSAVES = FeatureXSAVE;
|
|
|
|
// MMX->3DNOW->3DNOWA chain.
|
|
constexpr FeatureBitset ImpliedFeaturesMMX = {};
|
|
constexpr FeatureBitset ImpliedFeatures3DNOW = FeatureMMX;
|
|
constexpr FeatureBitset ImpliedFeatures3DNOWA = Feature3DNOW;
|
|
|
|
// SSE/AVX/AVX512F chain.
|
|
constexpr FeatureBitset ImpliedFeaturesSSE = {};
|
|
constexpr FeatureBitset ImpliedFeaturesSSE2 = FeatureSSE;
|
|
constexpr FeatureBitset ImpliedFeaturesSSE3 = FeatureSSE2;
|
|
constexpr FeatureBitset ImpliedFeaturesSSSE3 = FeatureSSE3;
|
|
constexpr FeatureBitset ImpliedFeaturesSSE4_1 = FeatureSSSE3;
|
|
constexpr FeatureBitset ImpliedFeaturesSSE4_2 = FeatureSSE4_1;
|
|
constexpr FeatureBitset ImpliedFeaturesAVX = FeatureSSE4_2;
|
|
constexpr FeatureBitset ImpliedFeaturesAVX2 = FeatureAVX;
|
|
constexpr FeatureBitset ImpliedFeaturesAVX512F =
|
|
FeatureAVX2 | FeatureF16C | FeatureFMA;
|
|
|
|
// Vector extensions that build on SSE or AVX.
|
|
constexpr FeatureBitset ImpliedFeaturesAES = FeatureSSE2;
|
|
constexpr FeatureBitset ImpliedFeaturesF16C = FeatureAVX;
|
|
constexpr FeatureBitset ImpliedFeaturesFMA = FeatureAVX;
|
|
constexpr FeatureBitset ImpliedFeaturesGFNI = FeatureSSE2;
|
|
constexpr FeatureBitset ImpliedFeaturesPCLMUL = FeatureSSE2;
|
|
constexpr FeatureBitset ImpliedFeaturesSHA = FeatureSSE2;
|
|
constexpr FeatureBitset ImpliedFeaturesVAES = FeatureAES | FeatureAVX;
|
|
constexpr FeatureBitset ImpliedFeaturesVPCLMULQDQ = FeatureAVX | FeaturePCLMUL;
|
|
|
|
// AVX512 features.
|
|
constexpr FeatureBitset ImpliedFeaturesAVX512CD = FeatureAVX512F;
|
|
constexpr FeatureBitset ImpliedFeaturesAVX512BW = FeatureAVX512F;
|
|
constexpr FeatureBitset ImpliedFeaturesAVX512DQ = FeatureAVX512F;
|
|
constexpr FeatureBitset ImpliedFeaturesAVX512ER = FeatureAVX512F;
|
|
constexpr FeatureBitset ImpliedFeaturesAVX512PF = FeatureAVX512F;
|
|
constexpr FeatureBitset ImpliedFeaturesAVX512VL = FeatureAVX512F;
|
|
|
|
constexpr FeatureBitset ImpliedFeaturesAVX512BF16 = FeatureAVX512BW;
|
|
constexpr FeatureBitset ImpliedFeaturesAVX512BITALG = FeatureAVX512BW;
|
|
constexpr FeatureBitset ImpliedFeaturesAVX512IFMA = FeatureAVX512F;
|
|
constexpr FeatureBitset ImpliedFeaturesAVX512VNNI = FeatureAVX512F;
|
|
constexpr FeatureBitset ImpliedFeaturesAVX512VPOPCNTDQ = FeatureAVX512F;
|
|
constexpr FeatureBitset ImpliedFeaturesAVX512VBMI = FeatureAVX512BW;
|
|
constexpr FeatureBitset ImpliedFeaturesAVX512VBMI2 = FeatureAVX512BW;
|
|
constexpr FeatureBitset ImpliedFeaturesAVX512VP2INTERSECT = FeatureAVX512F;
|
|
|
|
// FIXME: These two aren't really implemented and just exist in the feature
|
|
// list for __builtin_cpu_supports. So omit their dependencies.
|
|
constexpr FeatureBitset ImpliedFeaturesAVX5124FMAPS = {};
|
|
constexpr FeatureBitset ImpliedFeaturesAVX5124VNNIW = {};
|
|
|
|
// SSE4_A->FMA4->XOP chain.
|
|
constexpr FeatureBitset ImpliedFeaturesSSE4_A = FeatureSSE3;
|
|
constexpr FeatureBitset ImpliedFeaturesFMA4 = FeatureAVX | FeatureSSE4_A;
|
|
constexpr FeatureBitset ImpliedFeaturesXOP = FeatureFMA4;
|
|
|
|
// AMX Features
|
|
constexpr FeatureBitset ImpliedFeaturesAMX_TILE = {};
|
|
constexpr FeatureBitset ImpliedFeaturesAMX_BF16 = FeatureAMX_TILE;
|
|
constexpr FeatureBitset ImpliedFeaturesAMX_INT8 = FeatureAMX_TILE;
|
|
constexpr FeatureBitset ImpliedFeaturesHRESET = {};
|
|
|
|
// Key Locker Features
|
|
constexpr FeatureBitset ImpliedFeaturesKL = FeatureSSE2;
|
|
constexpr FeatureBitset ImpliedFeaturesWIDEKL = FeatureKL;
|
|
|
|
constexpr FeatureInfo FeatureInfos[X86::CPU_FEATURE_MAX] = {
|
|
#define X86_FEATURE(ENUM, STR) {{STR}, ImpliedFeatures##ENUM},
|
|
#include "llvm/Support/X86TargetParser.def"
|
|
};
|
|
|
|
void llvm::X86::getFeaturesForCPU(StringRef CPU,
|
|
SmallVectorImpl<StringRef> &EnabledFeatures) {
|
|
auto I = llvm::find_if(Processors,
|
|
[&](const ProcInfo &P) { return P.Name == CPU; });
|
|
assert(I != std::end(Processors) && "Processor not found!");
|
|
|
|
FeatureBitset Bits = I->Features;
|
|
|
|
// Remove the 64-bit feature which we only use to validate if a CPU can
|
|
// be used with 64-bit mode.
|
|
Bits &= ~Feature64BIT;
|
|
|
|
// Add the string version of all set bits.
|
|
for (unsigned i = 0; i != CPU_FEATURE_MAX; ++i)
|
|
if (Bits[i] && !FeatureInfos[i].Name.empty())
|
|
EnabledFeatures.push_back(FeatureInfos[i].Name);
|
|
}
|
|
|
|
// For each feature that is (transitively) implied by this feature, set it.
|
|
static void getImpliedEnabledFeatures(FeatureBitset &Bits,
|
|
const FeatureBitset &Implies) {
|
|
// Fast path: Implies is often empty.
|
|
if (!Implies.any())
|
|
return;
|
|
FeatureBitset Prev;
|
|
Bits |= Implies;
|
|
do {
|
|
Prev = Bits;
|
|
for (unsigned i = CPU_FEATURE_MAX; i;)
|
|
if (Bits[--i])
|
|
Bits |= FeatureInfos[i].ImpliedFeatures;
|
|
} while (Prev != Bits);
|
|
}
|
|
|
|
/// Create bit vector of features that are implied disabled if the feature
|
|
/// passed in Value is disabled.
|
|
static void getImpliedDisabledFeatures(FeatureBitset &Bits, unsigned Value) {
|
|
// Check all features looking for any dependent on this feature. If we find
|
|
// one, mark it and recursively find any feature that depend on it.
|
|
FeatureBitset Prev;
|
|
Bits.set(Value);
|
|
do {
|
|
Prev = Bits;
|
|
for (unsigned i = 0; i != CPU_FEATURE_MAX; ++i)
|
|
if ((FeatureInfos[i].ImpliedFeatures & Bits).any())
|
|
Bits.set(i);
|
|
} while (Prev != Bits);
|
|
}
|
|
|
|
void llvm::X86::updateImpliedFeatures(
|
|
StringRef Feature, bool Enabled,
|
|
StringMap<bool> &Features) {
|
|
auto I = llvm::find_if(
|
|
FeatureInfos, [&](const FeatureInfo &FI) { return FI.Name == Feature; });
|
|
if (I == std::end(FeatureInfos)) {
|
|
// FIXME: This shouldn't happen, but may not have all features in the table
|
|
// yet.
|
|
return;
|
|
}
|
|
|
|
FeatureBitset ImpliedBits;
|
|
if (Enabled)
|
|
getImpliedEnabledFeatures(ImpliedBits, I->ImpliedFeatures);
|
|
else
|
|
getImpliedDisabledFeatures(ImpliedBits,
|
|
std::distance(std::begin(FeatureInfos), I));
|
|
|
|
// Update the map entry for all implied features.
|
|
for (unsigned i = 0; i != CPU_FEATURE_MAX; ++i)
|
|
if (ImpliedBits[i] && !FeatureInfos[i].Name.empty())
|
|
Features[FeatureInfos[i].Name] = Enabled;
|
|
}
|