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