contrib/llvm/utils/TableGen/TableGen.cpp

   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   GenExegesis,
  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(GenExegesis, "gen-exegesis",
 123                                "Generate llvm-exegesis tables")));
 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 GenExegesis:
 238     EmitExegesis(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)