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