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