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