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 GenX86EVEX2VEXTables, 53 GenX86FoldTables, 54 GenRegisterBank, 55 GenExegesis, 56 }; 57 58 namespace llvm { 59 /// Storage for TimeRegionsOpt as a global so that backends aren't required to 60 /// include CommandLine.h 61 bool TimeRegions = false; 62 } // end namespace llvm 63 64 namespace { 65 cl::opt<ActionType> 66 Action(cl::desc("Action to perform:"), 67 cl::values(clEnumValN(PrintRecords, "print-records", 68 "Print all records to stdout (default)"), 69 clEnumValN(DumpJSON, "dump-json", 70 "Dump all records as machine-readable JSON"), 71 clEnumValN(GenEmitter, "gen-emitter", 72 "Generate machine code emitter"), 73 clEnumValN(GenRegisterInfo, "gen-register-info", 74 "Generate registers and register classes info"), 75 clEnumValN(GenInstrInfo, "gen-instr-info", 76 "Generate instruction descriptions"), 77 clEnumValN(GenInstrDocs, "gen-instr-docs", 78 "Generate instruction documentation"), 79 clEnumValN(GenCallingConv, "gen-callingconv", 80 "Generate calling convention descriptions"), 81 clEnumValN(GenAsmWriter, "gen-asm-writer", 82 "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", 108 "Print enum values for a class"), 109 clEnumValN(PrintSets, "print-sets", 110 "Print expanded sets for testing DAG exprs"), 111 clEnumValN(GenOptParserDefs, "gen-opt-parser-defs", 112 "Generate option definitions"), 113 clEnumValN(GenCTags, "gen-ctags", 114 "Generate ctags-compatible index"), 115 clEnumValN(GenAttributes, "gen-attrs", 116 "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(GenX86EVEX2VEXTables, "gen-x86-EVEX2VEX-tables", 122 "Generate X86 EVEX to VEX compress tables"), 123 clEnumValN(GenX86FoldTables, "gen-x86-fold-tables", 124 "Generate X86 fold tables"), 125 clEnumValN(GenRegisterBank, "gen-register-bank", 126 "Generate registers bank descriptions"), 127 clEnumValN(GenExegesis, "gen-exegesis", 128 "Generate llvm-exegesis tables"))); 129 130 cl::OptionCategory PrintEnumsCat("Options for -print-enums"); 131 cl::opt<std::string> 132 Class("class", cl::desc("Print Enum list for this class"), 133 cl::value_desc("class name"), cl::cat(PrintEnumsCat)); 134 135 cl::opt<bool, true> 136 TimeRegionsOpt("time-regions", 137 cl::desc("Time regions of tablegens execution"), 138 cl::location(TimeRegions)); 139 140 bool LLVMTableGenMain(raw_ostream &OS, RecordKeeper &Records) { 141 switch (Action) { 142 case PrintRecords: 143 OS << Records; // No argument, dump all contents 144 break; 145 case DumpJSON: 146 EmitJSON(Records, OS); 147 break; 148 case GenEmitter: 149 EmitCodeEmitter(Records, OS); 150 break; 151 case GenRegisterInfo: 152 EmitRegisterInfo(Records, OS); 153 break; 154 case GenInstrInfo: 155 EmitInstrInfo(Records, OS); 156 break; 157 case GenInstrDocs: 158 EmitInstrDocs(Records, OS); 159 break; 160 case GenCallingConv: 161 EmitCallingConv(Records, OS); 162 break; 163 case GenAsmWriter: 164 EmitAsmWriter(Records, OS); 165 break; 166 case GenAsmMatcher: 167 EmitAsmMatcher(Records, OS); 168 break; 169 case GenDisassembler: 170 EmitDisassembler(Records, OS); 171 break; 172 case GenPseudoLowering: 173 EmitPseudoLowering(Records, OS); 174 break; 175 case GenCompressInst: 176 EmitCompressInst(Records, OS); 177 break; 178 case GenDAGISel: 179 EmitDAGISel(Records, OS); 180 break; 181 case GenDFAPacketizer: 182 EmitDFAPacketizer(Records, OS); 183 break; 184 case GenFastISel: 185 EmitFastISel(Records, OS); 186 break; 187 case GenSubtarget: 188 EmitSubtarget(Records, OS); 189 break; 190 case GenIntrinsicEnums: 191 EmitIntrinsicEnums(Records, OS); 192 break; 193 case GenIntrinsicImpl: 194 EmitIntrinsicImpl(Records, OS); 195 break; 196 case GenTgtIntrinsicEnums: 197 EmitIntrinsicEnums(Records, OS, true); 198 break; 199 case GenTgtIntrinsicImpl: 200 EmitIntrinsicImpl(Records, OS, true); 201 break; 202 case GenOptParserDefs: 203 EmitOptParser(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 GenRegisterBank: 239 EmitRegisterBank(Records, OS); 240 break; 241 case GenX86EVEX2VEXTables: 242 EmitX86EVEX2VEXTables(Records, OS); 243 break; 244 case GenX86FoldTables: 245 EmitX86FoldTables(Records, OS); 246 break; 247 case GenExegesis: 248 EmitExegesis(Records, OS); 249 break; 250 } 251 252 return false; 253 } 254 } 255 256 int main(int argc, char **argv) { 257 sys::PrintStackTraceOnErrorSignal(argv[0]); 258 PrettyStackTraceProgram X(argc, argv); 259 cl::ParseCommandLineOptions(argc, argv); 260 261 llvm_shutdown_obj Y; 262 263 return TableGenMain(argv[0], &LLVMTableGenMain); 264 } 265 266 #ifdef __has_feature 267 #if __has_feature(address_sanitizer) 268 #include <sanitizer/lsan_interface.h> 269 // Disable LeakSanitizer for this binary as it has too many leaks that are not 270 // very interesting to fix. See compiler-rt/include/sanitizer/lsan_interface.h . 271 LLVM_ATTRIBUTE_USED int __lsan_is_turned_off() { return 1; } 272 #endif // __has_feature(address_sanitizer) 273 #endif // defined(__has_feature) 274