1 //===- TableGen.cpp - Top-Level TableGen implementation for LLVM ----------===// 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 contains the main function for LLVM's TableGen. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "TableGenBackends.h" // Declares all backends. 15 #include "llvm/Support/CommandLine.h" 16 #include "llvm/Support/ManagedStatic.h" 17 #include "llvm/Support/PrettyStackTrace.h" 18 #include "llvm/Support/Signals.h" 19 #include "llvm/TableGen/Main.h" 20 #include "llvm/TableGen/Record.h" 21 #include "llvm/TableGen/SetTheory.h" 22 23 using namespace llvm; 24 25 enum ActionType { 26 PrintRecords, 27 DumpJSON, 28 GenEmitter, 29 GenRegisterInfo, 30 GenInstrInfo, 31 GenInstrDocs, 32 GenAsmWriter, 33 GenAsmMatcher, 34 GenDisassembler, 35 GenPseudoLowering, 36 GenCompressInst, 37 GenCallingConv, 38 GenDAGISel, 39 GenDFAPacketizer, 40 GenFastISel, 41 GenSubtarget, 42 GenIntrinsicEnums, 43 GenIntrinsicImpl, 44 GenTgtIntrinsicEnums, 45 GenTgtIntrinsicImpl, 46 PrintEnums, 47 PrintSets, 48 GenOptParserDefs, 49 GenCTags, 50 GenAttributes, 51 GenSearchableTables, 52 GenGlobalISel, 53 GenX86EVEX2VEXTables, 54 GenX86FoldTables, 55 GenRegisterBank, 56 GenWebAssemblyStackifier, 57 }; 58 59 namespace { 60 cl::opt<ActionType> 61 Action(cl::desc("Action to perform:"), 62 cl::values(clEnumValN(PrintRecords, "print-records", 63 "Print all records to stdout (default)"), 64 clEnumValN(DumpJSON, "dump-json", 65 "Dump all records as machine-readable JSON"), 66 clEnumValN(GenEmitter, "gen-emitter", 67 "Generate machine code emitter"), 68 clEnumValN(GenRegisterInfo, "gen-register-info", 69 "Generate registers and register classes info"), 70 clEnumValN(GenInstrInfo, "gen-instr-info", 71 "Generate instruction descriptions"), 72 clEnumValN(GenInstrDocs, "gen-instr-docs", 73 "Generate instruction documentation"), 74 clEnumValN(GenCallingConv, "gen-callingconv", 75 "Generate calling convention descriptions"), 76 clEnumValN(GenAsmWriter, "gen-asm-writer", 77 "Generate assembly writer"), 78 clEnumValN(GenDisassembler, "gen-disassembler", 79 "Generate disassembler"), 80 clEnumValN(GenPseudoLowering, "gen-pseudo-lowering", 81 "Generate pseudo instruction lowering"), 82 clEnumValN(GenCompressInst, "gen-compress-inst-emitter", 83 "Generate RISCV compressed instructions."), 84 clEnumValN(GenAsmMatcher, "gen-asm-matcher", 85 "Generate assembly instruction matcher"), 86 clEnumValN(GenDAGISel, "gen-dag-isel", 87 "Generate a DAG instruction selector"), 88 clEnumValN(GenDFAPacketizer, "gen-dfa-packetizer", 89 "Generate DFA Packetizer for VLIW targets"), 90 clEnumValN(GenFastISel, "gen-fast-isel", 91 "Generate a \"fast\" instruction selector"), 92 clEnumValN(GenSubtarget, "gen-subtarget", 93 "Generate subtarget enumerations"), 94 clEnumValN(GenIntrinsicEnums, "gen-intrinsic-enums", 95 "Generate intrinsic enums"), 96 clEnumValN(GenIntrinsicImpl, "gen-intrinsic-impl", 97 "Generate intrinsic information"), 98 clEnumValN(GenTgtIntrinsicEnums, "gen-tgt-intrinsic-enums", 99 "Generate target intrinsic enums"), 100 clEnumValN(GenTgtIntrinsicImpl, "gen-tgt-intrinsic-impl", 101 "Generate target intrinsic information"), 102 clEnumValN(PrintEnums, "print-enums", 103 "Print enum values for a class"), 104 clEnumValN(PrintSets, "print-sets", 105 "Print expanded sets for testing DAG exprs"), 106 clEnumValN(GenOptParserDefs, "gen-opt-parser-defs", 107 "Generate option definitions"), 108 clEnumValN(GenCTags, "gen-ctags", 109 "Generate ctags-compatible index"), 110 clEnumValN(GenAttributes, "gen-attrs", 111 "Generate attributes"), 112 clEnumValN(GenSearchableTables, "gen-searchable-tables", 113 "Generate generic binary-searchable table"), 114 clEnumValN(GenGlobalISel, "gen-global-isel", 115 "Generate GlobalISel selector"), 116 clEnumValN(GenX86EVEX2VEXTables, "gen-x86-EVEX2VEX-tables", 117 "Generate X86 EVEX to VEX compress tables"), 118 clEnumValN(GenX86FoldTables, "gen-x86-fold-tables", 119 "Generate X86 fold tables"), 120 clEnumValN(GenRegisterBank, "gen-register-bank", 121 "Generate registers bank descriptions"), 122 clEnumValN(GenWebAssemblyStackifier, "gen-wasm-stackifier", 123 "Generate WebAssembly stackification cases"))); 124 125 cl::OptionCategory PrintEnumsCat("Options for -print-enums"); 126 cl::opt<std::string> 127 Class("class", cl::desc("Print Enum list for this class"), 128 cl::value_desc("class name"), cl::cat(PrintEnumsCat)); 129 130 bool LLVMTableGenMain(raw_ostream &OS, RecordKeeper &Records) { 131 switch (Action) { 132 case PrintRecords: 133 OS << Records; // No argument, dump all contents 134 break; 135 case DumpJSON: 136 EmitJSON(Records, OS); 137 break; 138 case GenEmitter: 139 EmitCodeEmitter(Records, OS); 140 break; 141 case GenRegisterInfo: 142 EmitRegisterInfo(Records, OS); 143 break; 144 case GenInstrInfo: 145 EmitInstrInfo(Records, OS); 146 break; 147 case GenInstrDocs: 148 EmitInstrDocs(Records, OS); 149 break; 150 case GenCallingConv: 151 EmitCallingConv(Records, OS); 152 break; 153 case GenAsmWriter: 154 EmitAsmWriter(Records, OS); 155 break; 156 case GenAsmMatcher: 157 EmitAsmMatcher(Records, OS); 158 break; 159 case GenDisassembler: 160 EmitDisassembler(Records, OS); 161 break; 162 case GenPseudoLowering: 163 EmitPseudoLowering(Records, OS); 164 break; 165 case GenCompressInst: 166 EmitCompressInst(Records, OS); 167 break; 168 case GenDAGISel: 169 EmitDAGISel(Records, OS); 170 break; 171 case GenDFAPacketizer: 172 EmitDFAPacketizer(Records, OS); 173 break; 174 case GenFastISel: 175 EmitFastISel(Records, OS); 176 break; 177 case GenSubtarget: 178 EmitSubtarget(Records, OS); 179 break; 180 case GenIntrinsicEnums: 181 EmitIntrinsicEnums(Records, OS); 182 break; 183 case GenIntrinsicImpl: 184 EmitIntrinsicImpl(Records, OS); 185 break; 186 case GenTgtIntrinsicEnums: 187 EmitIntrinsicEnums(Records, OS, true); 188 break; 189 case GenTgtIntrinsicImpl: 190 EmitIntrinsicImpl(Records, OS, true); 191 break; 192 case GenOptParserDefs: 193 EmitOptParser(Records, OS); 194 break; 195 case PrintEnums: 196 { 197 for (Record *Rec : Records.getAllDerivedDefinitions(Class)) 198 OS << Rec->getName() << ", "; 199 OS << "\n"; 200 break; 201 } 202 case PrintSets: 203 { 204 SetTheory Sets; 205 Sets.addFieldExpander("Set", "Elements"); 206 for (Record *Rec : Records.getAllDerivedDefinitions("Set")) { 207 OS << Rec->getName() << " = ["; 208 const std::vector<Record*> *Elts = Sets.expand(Rec); 209 assert(Elts && "Couldn't expand Set instance"); 210 for (Record *Elt : *Elts) 211 OS << ' ' << Elt->getName(); 212 OS << " ]\n"; 213 } 214 break; 215 } 216 case GenCTags: 217 EmitCTags(Records, OS); 218 break; 219 case GenAttributes: 220 EmitAttributes(Records, OS); 221 break; 222 case GenSearchableTables: 223 EmitSearchableTables(Records, OS); 224 break; 225 case GenGlobalISel: 226 EmitGlobalISel(Records, OS); 227 break; 228 case GenRegisterBank: 229 EmitRegisterBank(Records, OS); 230 break; 231 case GenX86EVEX2VEXTables: 232 EmitX86EVEX2VEXTables(Records, OS); 233 break; 234 case GenX86FoldTables: 235 EmitX86FoldTables(Records, OS); 236 break; 237 case GenWebAssemblyStackifier: 238 EmitWebAssemblyStackifier(Records, OS); 239 break; 240 } 241 242 return false; 243 } 244 } 245 246 int main(int argc, char **argv) { 247 sys::PrintStackTraceOnErrorSignal(argv[0]); 248 PrettyStackTraceProgram X(argc, argv); 249 cl::ParseCommandLineOptions(argc, argv); 250 251 llvm_shutdown_obj Y; 252 253 return TableGenMain(argv[0], &LLVMTableGenMain); 254 } 255 256 #ifdef __has_feature 257 #if __has_feature(address_sanitizer) 258 #include <sanitizer/lsan_interface.h> 259 // Disable LeakSanitizer for this binary as it has too many leaks that are not 260 // very interesting to fix. See compiler-rt/include/sanitizer/lsan_interface.h . 261 LLVM_ATTRIBUTE_USED int __lsan_is_turned_off() { return 1; } 262 #endif // __has_feature(address_sanitizer) 263 #endif // defined(__has_feature) 264