1 //===- TableGen.cpp - Top-Level TableGen implementation for LLVM ----------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file contains the main function for LLVM's TableGen. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #include "TableGenBackends.h" // Declares all backends. 14 #include "llvm/Support/CommandLine.h" 15 #include "llvm/Support/InitLLVM.h" 16 #include "llvm/TableGen/Main.h" 17 #include "llvm/TableGen/Record.h" 18 #include "llvm/TableGen/SetTheory.h" 19 20 using namespace llvm; 21 22 enum ActionType { 23 PrintRecords, 24 DumpJSON, 25 GenEmitter, 26 GenRegisterInfo, 27 GenInstrInfo, 28 GenInstrDocs, 29 GenAsmWriter, 30 GenAsmMatcher, 31 GenDisassembler, 32 GenPseudoLowering, 33 GenCompressInst, 34 GenCallingConv, 35 GenDAGISel, 36 GenDFAPacketizer, 37 GenFastISel, 38 GenSubtarget, 39 GenIntrinsicEnums, 40 GenIntrinsicImpl, 41 PrintEnums, 42 PrintSets, 43 GenOptParserDefs, 44 GenOptRST, 45 GenCTags, 46 GenAttributes, 47 GenSearchableTables, 48 GenGlobalISel, 49 GenGICombiner, 50 GenX86EVEX2VEXTables, 51 GenX86FoldTables, 52 GenRegisterBank, 53 GenExegesis, 54 GenAutomata, 55 GenDirectivesEnumDecl, 56 GenDirectivesEnumImpl, 57 GenDirectivesEnumGen, 58 }; 59 60 namespace llvm { 61 /// Storage for TimeRegionsOpt as a global so that backends aren't required to 62 /// include CommandLine.h 63 bool TimeRegions = false; 64 cl::opt<bool> EmitLongStrLiterals( 65 "long-string-literals", 66 cl::desc("when emitting large string tables, prefer string literals over " 67 "comma-separated char literals. This can be a readability and " 68 "compile-time performance win, but upsets some compilers"), 69 cl::Hidden, cl::init(true)); 70 } // end namespace llvm 71 72 namespace { 73 cl::opt<ActionType> Action( 74 cl::desc("Action to perform:"), 75 cl::values( 76 clEnumValN(PrintRecords, "print-records", 77 "Print all records to stdout (default)"), 78 clEnumValN(DumpJSON, "dump-json", 79 "Dump all records as machine-readable JSON"), 80 clEnumValN(GenEmitter, "gen-emitter", "Generate machine code emitter"), 81 clEnumValN(GenRegisterInfo, "gen-register-info", 82 "Generate registers and register classes info"), 83 clEnumValN(GenInstrInfo, "gen-instr-info", 84 "Generate instruction descriptions"), 85 clEnumValN(GenInstrDocs, "gen-instr-docs", 86 "Generate instruction documentation"), 87 clEnumValN(GenCallingConv, "gen-callingconv", 88 "Generate calling convention descriptions"), 89 clEnumValN(GenAsmWriter, "gen-asm-writer", "Generate assembly writer"), 90 clEnumValN(GenDisassembler, "gen-disassembler", 91 "Generate disassembler"), 92 clEnumValN(GenPseudoLowering, "gen-pseudo-lowering", 93 "Generate pseudo instruction lowering"), 94 clEnumValN(GenCompressInst, "gen-compress-inst-emitter", 95 "Generate RISCV compressed instructions."), 96 clEnumValN(GenAsmMatcher, "gen-asm-matcher", 97 "Generate assembly instruction matcher"), 98 clEnumValN(GenDAGISel, "gen-dag-isel", 99 "Generate a DAG instruction selector"), 100 clEnumValN(GenDFAPacketizer, "gen-dfa-packetizer", 101 "Generate DFA Packetizer for VLIW targets"), 102 clEnumValN(GenFastISel, "gen-fast-isel", 103 "Generate a \"fast\" instruction selector"), 104 clEnumValN(GenSubtarget, "gen-subtarget", 105 "Generate subtarget enumerations"), 106 clEnumValN(GenIntrinsicEnums, "gen-intrinsic-enums", 107 "Generate intrinsic enums"), 108 clEnumValN(GenIntrinsicImpl, "gen-intrinsic-impl", 109 "Generate intrinsic information"), 110 clEnumValN(PrintEnums, "print-enums", "Print enum values for a class"), 111 clEnumValN(PrintSets, "print-sets", 112 "Print expanded sets for testing DAG exprs"), 113 clEnumValN(GenOptParserDefs, "gen-opt-parser-defs", 114 "Generate option definitions"), 115 clEnumValN(GenOptRST, "gen-opt-rst", "Generate option RST"), 116 clEnumValN(GenCTags, "gen-ctags", "Generate ctags-compatible index"), 117 clEnumValN(GenAttributes, "gen-attrs", "Generate attributes"), 118 clEnumValN(GenSearchableTables, "gen-searchable-tables", 119 "Generate generic binary-searchable table"), 120 clEnumValN(GenGlobalISel, "gen-global-isel", 121 "Generate GlobalISel selector"), 122 clEnumValN(GenGICombiner, "gen-global-isel-combiner", 123 "Generate GlobalISel combiner"), 124 clEnumValN(GenX86EVEX2VEXTables, "gen-x86-EVEX2VEX-tables", 125 "Generate X86 EVEX to VEX compress tables"), 126 clEnumValN(GenX86FoldTables, "gen-x86-fold-tables", 127 "Generate X86 fold tables"), 128 clEnumValN(GenRegisterBank, "gen-register-bank", 129 "Generate registers bank descriptions"), 130 clEnumValN(GenExegesis, "gen-exegesis", 131 "Generate llvm-exegesis tables"), 132 clEnumValN(GenAutomata, "gen-automata", "Generate generic automata"), 133 clEnumValN(GenDirectivesEnumDecl, "gen-directive-decl", 134 "Generate directive related declaration code (header file)"), 135 clEnumValN(GenDirectivesEnumImpl, "gen-directive-impl", 136 "Generate directive related implementation code"), 137 clEnumValN(GenDirectivesEnumGen, "gen-directive-gen", 138 "Generate directive related implementation code part"))); 139 140 cl::OptionCategory PrintEnumsCat("Options for -print-enums"); 141 cl::opt<std::string> Class("class", cl::desc("Print Enum list for this class"), 142 cl::value_desc("class name"), 143 cl::cat(PrintEnumsCat)); 144 145 cl::opt<bool, true> 146 TimeRegionsOpt("time-regions", 147 cl::desc("Time regions of tablegens execution"), 148 cl::location(TimeRegions)); 149 150 bool LLVMTableGenMain(raw_ostream &OS, RecordKeeper &Records) { 151 switch (Action) { 152 case PrintRecords: 153 OS << Records; // No argument, dump all contents 154 break; 155 case DumpJSON: 156 EmitJSON(Records, OS); 157 break; 158 case GenEmitter: 159 EmitCodeEmitter(Records, OS); 160 break; 161 case GenRegisterInfo: 162 EmitRegisterInfo(Records, OS); 163 break; 164 case GenInstrInfo: 165 EmitInstrInfo(Records, OS); 166 break; 167 case GenInstrDocs: 168 EmitInstrDocs(Records, OS); 169 break; 170 case GenCallingConv: 171 EmitCallingConv(Records, OS); 172 break; 173 case GenAsmWriter: 174 EmitAsmWriter(Records, OS); 175 break; 176 case GenAsmMatcher: 177 EmitAsmMatcher(Records, OS); 178 break; 179 case GenDisassembler: 180 EmitDisassembler(Records, OS); 181 break; 182 case GenPseudoLowering: 183 EmitPseudoLowering(Records, OS); 184 break; 185 case GenCompressInst: 186 EmitCompressInst(Records, OS); 187 break; 188 case GenDAGISel: 189 EmitDAGISel(Records, OS); 190 break; 191 case GenDFAPacketizer: 192 EmitDFAPacketizer(Records, OS); 193 break; 194 case GenFastISel: 195 EmitFastISel(Records, OS); 196 break; 197 case GenSubtarget: 198 EmitSubtarget(Records, OS); 199 break; 200 case GenIntrinsicEnums: 201 EmitIntrinsicEnums(Records, OS); 202 break; 203 case GenIntrinsicImpl: 204 EmitIntrinsicImpl(Records, OS); 205 break; 206 case GenOptParserDefs: 207 EmitOptParser(Records, OS); 208 break; 209 case GenOptRST: 210 EmitOptRST(Records, OS); 211 break; 212 case PrintEnums: 213 { 214 for (Record *Rec : Records.getAllDerivedDefinitions(Class)) 215 OS << Rec->getName() << ", "; 216 OS << "\n"; 217 break; 218 } 219 case PrintSets: 220 { 221 SetTheory Sets; 222 Sets.addFieldExpander("Set", "Elements"); 223 for (Record *Rec : Records.getAllDerivedDefinitions("Set")) { 224 OS << Rec->getName() << " = ["; 225 const std::vector<Record*> *Elts = Sets.expand(Rec); 226 assert(Elts && "Couldn't expand Set instance"); 227 for (Record *Elt : *Elts) 228 OS << ' ' << Elt->getName(); 229 OS << " ]\n"; 230 } 231 break; 232 } 233 case GenCTags: 234 EmitCTags(Records, OS); 235 break; 236 case GenAttributes: 237 EmitAttributes(Records, OS); 238 break; 239 case GenSearchableTables: 240 EmitSearchableTables(Records, OS); 241 break; 242 case GenGlobalISel: 243 EmitGlobalISel(Records, OS); 244 break; 245 case GenGICombiner: 246 EmitGICombiner(Records, OS); 247 break; 248 case GenRegisterBank: 249 EmitRegisterBank(Records, OS); 250 break; 251 case GenX86EVEX2VEXTables: 252 EmitX86EVEX2VEXTables(Records, OS); 253 break; 254 case GenX86FoldTables: 255 EmitX86FoldTables(Records, OS); 256 break; 257 case GenExegesis: 258 EmitExegesis(Records, OS); 259 break; 260 case GenAutomata: 261 EmitAutomata(Records, OS); 262 break; 263 case GenDirectivesEnumDecl: 264 EmitDirectivesDecl(Records, OS); 265 break; 266 case GenDirectivesEnumImpl: 267 EmitDirectivesImpl(Records, OS); 268 break; 269 case GenDirectivesEnumGen: 270 EmitDirectivesGen(Records, OS); 271 break; 272 } 273 274 return false; 275 } 276 } 277 278 int main(int argc, char **argv) { 279 InitLLVM X(argc, argv); 280 cl::ParseCommandLineOptions(argc, argv); 281 282 return TableGenMain(argv[0], &LLVMTableGenMain); 283 } 284 285 #ifndef __has_feature 286 #define __has_feature(x) 0 287 #endif 288 289 #if __has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__) || \ 290 __has_feature(leak_sanitizer) 291 292 #include <sanitizer/lsan_interface.h> 293 // Disable LeakSanitizer for this binary as it has too many leaks that are not 294 // very interesting to fix. See compiler-rt/include/sanitizer/lsan_interface.h . 295 LLVM_ATTRIBUTE_USED int __lsan_is_turned_off() { return 1; } 296 297 #endif 298