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/Error.h" 20 #include "llvm/TableGen/Main.h" 21 #include "llvm/TableGen/Record.h" 22 #include "llvm/TableGen/SetTheory.h" 23 24 using namespace llvm; 25 26 enum ActionType { 27 PrintRecords, 28 GenEmitter, 29 GenRegisterInfo, 30 GenInstrInfo, 31 GenInstrDocs, 32 GenAsmWriter, 33 GenAsmMatcher, 34 GenDisassembler, 35 GenPseudoLowering, 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(GenAsmMatcher, "gen-asm-matcher", 77 "Generate assembly instruction matcher"), 78 clEnumValN(GenDAGISel, "gen-dag-isel", 79 "Generate a DAG instruction selector"), 80 clEnumValN(GenDFAPacketizer, "gen-dfa-packetizer", 81 "Generate DFA Packetizer for VLIW targets"), 82 clEnumValN(GenFastISel, "gen-fast-isel", 83 "Generate a \"fast\" instruction selector"), 84 clEnumValN(GenSubtarget, "gen-subtarget", 85 "Generate subtarget enumerations"), 86 clEnumValN(GenIntrinsic, "gen-intrinsic", 87 "Generate intrinsic information"), 88 clEnumValN(GenTgtIntrinsic, "gen-tgt-intrinsic", 89 "Generate target intrinsic information"), 90 clEnumValN(PrintEnums, "print-enums", 91 "Print enum values for a class"), 92 clEnumValN(PrintSets, "print-sets", 93 "Print expanded sets for testing DAG exprs"), 94 clEnumValN(GenOptParserDefs, "gen-opt-parser-defs", 95 "Generate option definitions"), 96 clEnumValN(GenCTags, "gen-ctags", 97 "Generate ctags-compatible index"), 98 clEnumValN(GenAttributes, "gen-attrs", 99 "Generate attributes"), 100 clEnumValN(GenSearchableTables, "gen-searchable-tables", 101 "Generate generic binary-searchable table"), 102 clEnumValN(GenGlobalISel, "gen-global-isel", 103 "Generate GlobalISel selector"), 104 clEnumValN(GenX86EVEX2VEXTables, "gen-x86-EVEX2VEX-tables", 105 "Generate X86 EVEX to VEX compress tables"), 106 clEnumValN(GenX86FoldTables, "gen-x86-fold-tables", 107 "Generate X86 fold tables"), 108 clEnumValN(GenRegisterBank, "gen-register-bank", 109 "Generate registers bank descriptions"))); 110 111 cl::OptionCategory PrintEnumsCat("Options for -print-enums"); 112 cl::opt<std::string> 113 Class("class", cl::desc("Print Enum list for this class"), 114 cl::value_desc("class name"), cl::cat(PrintEnumsCat)); 115 116 bool LLVMTableGenMain(raw_ostream &OS, RecordKeeper &Records) { 117 switch (Action) { 118 case PrintRecords: 119 OS << Records; // No argument, dump all contents 120 break; 121 case GenEmitter: 122 EmitCodeEmitter(Records, OS); 123 break; 124 case GenRegisterInfo: 125 EmitRegisterInfo(Records, OS); 126 break; 127 case GenInstrInfo: 128 EmitInstrInfo(Records, OS); 129 break; 130 case GenInstrDocs: 131 EmitInstrDocs(Records, OS); 132 break; 133 case GenCallingConv: 134 EmitCallingConv(Records, OS); 135 break; 136 case GenAsmWriter: 137 EmitAsmWriter(Records, OS); 138 break; 139 case GenAsmMatcher: 140 EmitAsmMatcher(Records, OS); 141 break; 142 case GenDisassembler: 143 EmitDisassembler(Records, OS); 144 break; 145 case GenPseudoLowering: 146 EmitPseudoLowering(Records, OS); 147 break; 148 case GenDAGISel: 149 EmitDAGISel(Records, OS); 150 break; 151 case GenDFAPacketizer: 152 EmitDFAPacketizer(Records, OS); 153 break; 154 case GenFastISel: 155 EmitFastISel(Records, OS); 156 break; 157 case GenSubtarget: 158 EmitSubtarget(Records, OS); 159 break; 160 case GenIntrinsic: 161 EmitIntrinsics(Records, OS); 162 break; 163 case GenTgtIntrinsic: 164 EmitIntrinsics(Records, OS, true); 165 break; 166 case GenOptParserDefs: 167 EmitOptParser(Records, OS); 168 break; 169 case PrintEnums: 170 { 171 for (Record *Rec : Records.getAllDerivedDefinitions(Class)) 172 OS << Rec->getName() << ", "; 173 OS << "\n"; 174 break; 175 } 176 case PrintSets: 177 { 178 SetTheory Sets; 179 Sets.addFieldExpander("Set", "Elements"); 180 for (Record *Rec : Records.getAllDerivedDefinitions("Set")) { 181 OS << Rec->getName() << " = ["; 182 const std::vector<Record*> *Elts = Sets.expand(Rec); 183 assert(Elts && "Couldn't expand Set instance"); 184 for (Record *Elt : *Elts) 185 OS << ' ' << Elt->getName(); 186 OS << " ]\n"; 187 } 188 break; 189 } 190 case GenCTags: 191 EmitCTags(Records, OS); 192 break; 193 case GenAttributes: 194 EmitAttributes(Records, OS); 195 break; 196 case GenSearchableTables: 197 EmitSearchableTables(Records, OS); 198 break; 199 case GenGlobalISel: 200 EmitGlobalISel(Records, OS); 201 break; 202 case GenRegisterBank: 203 EmitRegisterBank(Records, OS); 204 break; 205 case GenX86EVEX2VEXTables: 206 EmitX86EVEX2VEXTables(Records, OS); 207 break; 208 case GenX86FoldTables: 209 EmitX86FoldTables(Records, OS); 210 break; 211 } 212 213 return false; 214 } 215 } 216 217 int main(int argc, char **argv) { 218 sys::PrintStackTraceOnErrorSignal(argv[0]); 219 PrettyStackTraceProgram X(argc, argv); 220 cl::ParseCommandLineOptions(argc, argv); 221 222 llvm_shutdown_obj Y; 223 224 return TableGenMain(argv[0], &LLVMTableGenMain); 225 } 226 227 #ifdef __has_feature 228 #if __has_feature(address_sanitizer) 229 #include <sanitizer/lsan_interface.h> 230 // Disable LeakSanitizer for this binary as it has too many leaks that are not 231 // very interesting to fix. See compiler-rt/include/sanitizer/lsan_interface.h . 232 LLVM_ATTRIBUTE_USED int __lsan_is_turned_off() { return 1; } 233 #endif // __has_feature(address_sanitizer) 234 #endif // defined(__has_feature) 235