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 "SetTheory.h"
  16 #include "llvm/Support/CommandLine.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
  23 using namespace llvm;
  24
  25 enum ActionType {
  26   PrintRecords,
  27   GenEmitter,
  28   GenRegisterInfo,
  29   GenInstrInfo,
  30   GenAsmWriter,
  31   GenAsmMatcher,
  32   GenDisassembler,
  33   GenPseudoLowering,
  34   GenCallingConv,
  35   GenDAGISel,
  36   GenDFAPacketizer,
  37   GenFastISel,
  38   GenSubtarget,
  39   GenIntrinsic,
  40   GenTgtIntrinsic,
  41   PrintEnums,
  42   PrintSets,
  43   GenOptParserDefs,
  44   GenCTags
  45 };
  46
  47 namespace {
  48   cl::opt<ActionType>
  49   Action(cl::desc("Action to perform:"),
  50          cl::values(clEnumValN(PrintRecords, "print-records",
  51                                "Print all records to stdout (default)"),
  52                     clEnumValN(GenEmitter, "gen-emitter",
  53                                "Generate machine code emitter"),
  54                     clEnumValN(GenRegisterInfo, "gen-register-info",
  55                                "Generate registers and register classes info"),
  56                     clEnumValN(GenInstrInfo, "gen-instr-info",
  57                                "Generate instruction descriptions"),
  58                     clEnumValN(GenCallingConv, "gen-callingconv",
  59                                "Generate calling convention descriptions"),
  60                     clEnumValN(GenAsmWriter, "gen-asm-writer",
  61                                "Generate assembly writer"),
  62                     clEnumValN(GenDisassembler, "gen-disassembler",
  63                                "Generate disassembler"),
  64                     clEnumValN(GenPseudoLowering, "gen-pseudo-lowering",
  65                                "Generate pseudo instruction lowering"),
  66                     clEnumValN(GenAsmMatcher, "gen-asm-matcher",
  67                                "Generate assembly instruction matcher"),
  68                     clEnumValN(GenDAGISel, "gen-dag-isel",
  69                                "Generate a DAG instruction selector"),
  70                     clEnumValN(GenDFAPacketizer, "gen-dfa-packetizer",
  71                                "Generate DFA Packetizer for VLIW targets"),
  72                     clEnumValN(GenFastISel, "gen-fast-isel",
  73                                "Generate a \"fast\" instruction selector"),
  74                     clEnumValN(GenSubtarget, "gen-subtarget",
  75                                "Generate subtarget enumerations"),
  76                     clEnumValN(GenIntrinsic, "gen-intrinsic",
  77                                "Generate intrinsic information"),
  78                     clEnumValN(GenTgtIntrinsic, "gen-tgt-intrinsic",
  79                                "Generate target intrinsic information"),
  80                     clEnumValN(PrintEnums, "print-enums",
  81                                "Print enum values for a class"),
  82                     clEnumValN(PrintSets, "print-sets",
  83                                "Print expanded sets for testing DAG exprs"),
  84                     clEnumValN(GenOptParserDefs, "gen-opt-parser-defs",
  85                                "Generate option definitions"),
  86                     clEnumValN(GenCTags, "gen-ctags",
  87                                "Generate ctags-compatible index"),
  88                     clEnumValEnd));
  89
  90   cl::opt<std::string>
  91   Class("class", cl::desc("Print Enum list for this class"),
  92           cl::value_desc("class name"));
  93
  94 bool LLVMTableGenMain(raw_ostream &OS, RecordKeeper &Records) {
  95   switch (Action) {
  96   case PrintRecords:
  97     OS << Records;           // No argument, dump all contents
  98     break;
  99   case GenEmitter:
 100     EmitCodeEmitter(Records, OS);
 101     break;
 102   case GenRegisterInfo:
 103     EmitRegisterInfo(Records, OS);
 104     break;
 105   case GenInstrInfo:
 106     EmitInstrInfo(Records, OS);
 107     break;
 108   case GenCallingConv:
 109     EmitCallingConv(Records, OS);
 110     break;
 111   case GenAsmWriter:
 112     EmitAsmWriter(Records, OS);
 113     break;
 114   case GenAsmMatcher:
 115     EmitAsmMatcher(Records, OS);
 116     break;
 117   case GenDisassembler:
 118     EmitDisassembler(Records, OS);
 119     break;
 120   case GenPseudoLowering:
 121     EmitPseudoLowering(Records, OS);
 122     break;
 123   case GenDAGISel:
 124     EmitDAGISel(Records, OS);
 125     break;
 126   case GenDFAPacketizer:
 127     EmitDFAPacketizer(Records, OS);
 128     break;
 129   case GenFastISel:
 130     EmitFastISel(Records, OS);
 131     break;
 132   case GenSubtarget:
 133     EmitSubtarget(Records, OS);
 134     break;
 135   case GenIntrinsic:
 136     EmitIntrinsics(Records, OS);
 137     break;
 138   case GenTgtIntrinsic:
 139     EmitIntrinsics(Records, OS, true);
 140     break;
 141   case GenOptParserDefs:
 142     EmitOptParser(Records, OS);
 143     break;
 144   case PrintEnums:
 145   {
 146     std::vector<Record*> Recs = Records.getAllDerivedDefinitions(Class);
 147     for (unsigned i = 0, e = Recs.size(); i != e; ++i)
 148       OS << Recs[i]->getName() << ", ";
 149     OS << "\n";
 150     break;
 151   }
 152   case PrintSets:
 153   {
 154     SetTheory Sets;
 155     Sets.addFieldExpander("Set", "Elements");
 156     std::vector<Record*> Recs = Records.getAllDerivedDefinitions("Set");
 157     for (unsigned i = 0, e = Recs.size(); i != e; ++i) {
 158       OS << Recs[i]->getName() << " = [";
 159       const std::vector<Record*> *Elts = Sets.expand(Recs[i]);
 160       assert(Elts && "Couldn't expand Set instance");
 161       for (unsigned ei = 0, ee = Elts->size(); ei != ee; ++ei)
 162         OS << ' ' << (*Elts)[ei]->getName();
 163       OS << " ]\n";
 164     }
 165     break;
 166   }
 167   case GenCTags:
 168     EmitCTags(Records, OS);
 169     break;
 170   }
 171
 172   return false;
 173 }
 174 }
 175
 176 int main(int argc, char **argv) {
 177   sys::PrintStackTraceOnErrorSignal();
 178   PrettyStackTraceProgram X(argc, argv);
 179   cl::ParseCommandLineOptions(argc, argv);
 180
 181   return TableGenMain(argv[0], &LLVMTableGenMain);
 182 }
 183
 184 extern "C" {
 185 // Disable LeakSanitizer for this binary as it has too many leaks that are not
 186 // very interesting to fix. __lsan_is_turned_off is explained in
 187 // compiler-rt/include/sanitizer/lsan_interface.h
 188 int __lsan_is_turned_off() { return 1; }
 189 }  // extern "C"