1 //===-- TargetParser - Parser for target features ---------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file implements a target parser to recognise hardware features such as 11 // FPU/CPU/ARCH names as well as specific support such as HDIV, etc. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_SUPPORT_TARGETPARSER_H 16 #define LLVM_SUPPORT_TARGETPARSER_H 17 18 // FIXME: vector is used because that's what clang uses for subtarget feature 19 // lists, but SmallVector would probably be better 20 #include "llvm/ADT/Triple.h" 21 #include <vector> 22 23 namespace llvm { 24 class StringRef; 25 26 // Target specific information into their own namespaces. These should be 27 // generated from TableGen because the information is already there, and there 28 // is where new information about targets will be added. 29 // FIXME: To TableGen this we need to make some table generated files available 30 // even if the back-end is not compiled with LLVM, plus we need to create a new 31 // back-end to TableGen to create these clean tables. 32 namespace ARM { 33 34 // FPU Version 35 enum class FPUVersion { 36 NONE, 37 VFPV2, 38 VFPV3, 39 VFPV3_FP16, 40 VFPV4, 41 VFPV5 42 }; 43 44 // An FPU name restricts the FPU in one of three ways: 45 enum class FPURestriction { 46 None = 0, ///< No restriction 47 D16, ///< Only 16 D registers 48 SP_D16 ///< Only single-precision instructions, with 16 D registers 49 }; 50 51 // An FPU name implies one of three levels of Neon support: 52 enum class NeonSupportLevel { 53 None = 0, ///< No Neon 54 Neon, ///< Neon 55 Crypto ///< Neon with Crypto 56 }; 57 58 // FPU names. 59 enum FPUKind { 60 #define ARM_FPU(NAME, KIND, VERSION, NEON_SUPPORT, RESTRICTION) KIND, 61 #include "ARMTargetParser.def" 62 FK_LAST 63 }; 64 65 // Arch names. 66 enum class ArchKind { 67 #define ARM_ARCH(NAME, ID, CPU_ATTR, SUB_ARCH, ARCH_ATTR, ARCH_FPU, ARCH_BASE_EXT) ID, 68 #include "ARMTargetParser.def" 69 }; 70 71 // Arch extension modifiers for CPUs. 72 enum ArchExtKind : unsigned { 73 AEK_INVALID = 0, 74 AEK_NONE = 1, 75 AEK_CRC = 1 << 1, 76 AEK_CRYPTO = 1 << 2, 77 AEK_FP = 1 << 3, 78 AEK_HWDIVTHUMB = 1 << 4, 79 AEK_HWDIVARM = 1 << 5, 80 AEK_MP = 1 << 6, 81 AEK_SIMD = 1 << 7, 82 AEK_SEC = 1 << 8, 83 AEK_VIRT = 1 << 9, 84 AEK_DSP = 1 << 10, 85 AEK_FP16 = 1 << 11, 86 AEK_RAS = 1 << 12, 87 AEK_SVE = 1 << 13, 88 AEK_DOTPROD = 1 << 14, 89 // Unsupported extensions. 90 AEK_OS = 0x8000000, 91 AEK_IWMMXT = 0x10000000, 92 AEK_IWMMXT2 = 0x20000000, 93 AEK_MAVERICK = 0x40000000, 94 AEK_XSCALE = 0x80000000, 95 }; 96 97 // ISA kinds. 98 enum class ISAKind { INVALID = 0, ARM, THUMB, AARCH64 }; 99 100 // Endianness 101 // FIXME: BE8 vs. BE32? 102 enum class EndianKind { INVALID = 0, LITTLE, BIG }; 103 104 // v6/v7/v8 Profile 105 enum class ProfileKind { INVALID = 0, A, R, M }; 106 107 StringRef getCanonicalArchName(StringRef Arch); 108 109 // Information by ID 110 StringRef getFPUName(unsigned FPUKind); 111 FPUVersion getFPUVersion(unsigned FPUKind); 112 NeonSupportLevel getFPUNeonSupportLevel(unsigned FPUKind); 113 FPURestriction getFPURestriction(unsigned FPUKind); 114 115 // FIXME: These should be moved to TargetTuple once it exists 116 bool getFPUFeatures(unsigned FPUKind, std::vector<StringRef> &Features); 117 bool getHWDivFeatures(unsigned HWDivKind, std::vector<StringRef> &Features); 118 bool getExtensionFeatures(unsigned Extensions, 119 std::vector<StringRef> &Features); 120 121 StringRef getArchName(ArchKind AK); 122 unsigned getArchAttr(ArchKind AK); 123 StringRef getCPUAttr(ArchKind AK); 124 StringRef getSubArch(ArchKind AK); 125 StringRef getArchExtName(unsigned ArchExtKind); 126 StringRef getArchExtFeature(StringRef ArchExt); 127 StringRef getHWDivName(unsigned HWDivKind); 128 129 // Information by Name 130 unsigned getDefaultFPU(StringRef CPU, ArchKind AK); 131 unsigned getDefaultExtensions(StringRef CPU, ArchKind AK); 132 StringRef getDefaultCPU(StringRef Arch); 133 134 // Parser 135 unsigned parseHWDiv(StringRef HWDiv); 136 unsigned parseFPU(StringRef FPU); 137 ArchKind parseArch(StringRef Arch); 138 unsigned parseArchExt(StringRef ArchExt); 139 ArchKind parseCPUArch(StringRef CPU); 140 ISAKind parseArchISA(StringRef Arch); 141 EndianKind parseArchEndian(StringRef Arch); 142 ProfileKind parseArchProfile(StringRef Arch); 143 unsigned parseArchVersion(StringRef Arch); 144 145 StringRef computeDefaultTargetABI(const Triple &TT, StringRef CPU); 146 147 } // namespace ARM 148 149 // FIXME:This should be made into class design,to avoid dupplication. 150 namespace AArch64 { 151 152 // Arch names. 153 enum class ArchKind { 154 #define AARCH64_ARCH(NAME, ID, CPU_ATTR, SUB_ARCH, ARCH_ATTR, ARCH_FPU, ARCH_BASE_EXT) ID, 155 #include "AArch64TargetParser.def" 156 }; 157 158 // Arch extension modifiers for CPUs. 159 enum ArchExtKind : unsigned { 160 AEK_INVALID = 0, 161 AEK_NONE = 1, 162 AEK_CRC = 1 << 1, 163 AEK_CRYPTO = 1 << 2, 164 AEK_FP = 1 << 3, 165 AEK_SIMD = 1 << 4, 166 AEK_FP16 = 1 << 5, 167 AEK_PROFILE = 1 << 6, 168 AEK_RAS = 1 << 7, 169 AEK_LSE = 1 << 8, 170 AEK_RDM = 1 << 9, 171 AEK_SVE = 1 << 10, 172 AEK_DOTPROD = 1 << 11, 173 AEK_RCPC = 1 << 12 174 }; 175 176 StringRef getCanonicalArchName(StringRef Arch); 177 178 // Information by ID 179 StringRef getFPUName(unsigned FPUKind); 180 ARM::FPUVersion getFPUVersion(unsigned FPUKind); 181 ARM::NeonSupportLevel getFPUNeonSupportLevel(unsigned FPUKind); 182 ARM::FPURestriction getFPURestriction(unsigned FPUKind); 183 184 // FIXME: These should be moved to TargetTuple once it exists 185 bool getFPUFeatures(unsigned FPUKind, std::vector<StringRef> &Features); 186 bool getExtensionFeatures(unsigned Extensions, 187 std::vector<StringRef> &Features); 188 bool getArchFeatures(ArchKind AK, std::vector<StringRef> &Features); 189 190 StringRef getArchName(ArchKind AK); 191 unsigned getArchAttr(ArchKind AK); 192 StringRef getCPUAttr(ArchKind AK); 193 StringRef getSubArch(ArchKind AK); 194 StringRef getArchExtName(unsigned ArchExtKind); 195 StringRef getArchExtFeature(StringRef ArchExt); 196 unsigned checkArchVersion(StringRef Arch); 197 198 // Information by Name 199 unsigned getDefaultFPU(StringRef CPU, ArchKind AK); 200 unsigned getDefaultExtensions(StringRef CPU, ArchKind AK); 201 StringRef getDefaultCPU(StringRef Arch); 202 203 // Parser 204 unsigned parseFPU(StringRef FPU); 205 AArch64::ArchKind parseArch(StringRef Arch); 206 unsigned parseArchExt(StringRef ArchExt); 207 ArchKind parseCPUArch(StringRef CPU); 208 ARM::ISAKind parseArchISA(StringRef Arch); 209 ARM::EndianKind parseArchEndian(StringRef Arch); 210 ARM::ProfileKind parseArchProfile(StringRef Arch); 211 unsigned parseArchVersion(StringRef Arch); 212 213 } // namespace AArch64 214 } // namespace llvm 215 216 #endif 217
