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