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
  16 #include "SetTheory.h"
  17 #include "llvm/Support/CommandLine.h"
  18 #include "llvm/Support/PrettyStackTrace.h"
  19 #include "llvm/Support/Signals.h"
  20 #include "llvm/TableGen/Error.h"
  21 #include "llvm/TableGen/Main.h"
  22 #include "llvm/TableGen/Record.h"
  23
  24 using namespace llvm;
  25
  26 enum ActionType {
  27   PrintRecords,
  28   GenEmitter,
  29   GenRegisterInfo,
  30   GenInstrInfo,
  31   GenAsmWriter,
  32   GenAsmMatcher,
  33   GenDisassembler,
  34   GenPseudoLowering,
  35   GenCallingConv,
  36   GenDAGISel,
  37   GenDFAPacketizer,
  38   GenFastISel,
  39   GenSubtarget,
  40   GenIntrinsic,
  41   GenTgtIntrinsic,
  42   GenEDInfo,
  43   PrintEnums,
  44   PrintSets
  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(GenEDInfo, "gen-enhanced-disassembly-info",
  81                                "Generate enhanced disassembly info"),
  82                     clEnumValN(PrintEnums, "print-enums",
  83                                "Print enum values for a class"),
  84                     clEnumValN(PrintSets, "print-sets",
  85                                "Print expanded sets for testing DAG exprs"),
  86                     clEnumValEnd));
  87
  88   cl::opt<std::string>
  89   Class("class", cl::desc("Print Enum list for this class"),
  90           cl::value_desc("class name"));
  91
  92 bool LLVMTableGenMain(raw_ostream &OS, RecordKeeper &Records) {
  93   switch (Action) {
  94   case PrintRecords:
  95     OS << Records;           // No argument, dump all contents
  96     break;
  97   case GenEmitter:
  98     EmitCodeEmitter(Records, OS);
  99     break;
 100   case GenRegisterInfo:
 101     EmitRegisterInfo(Records, OS);
 102     break;
 103   case GenInstrInfo:
 104     EmitInstrInfo(Records, OS);
 105     break;
 106   case GenCallingConv:
 107     EmitCallingConv(Records, OS);
 108     break;
 109   case GenAsmWriter:
 110     EmitAsmWriter(Records, OS);
 111     break;
 112   case GenAsmMatcher:
 113     EmitAsmMatcher(Records, OS);
 114     break;
 115   case GenDisassembler:
 116     EmitDisassembler(Records, OS);
 117     break;
 118   case GenPseudoLowering:
 119     EmitPseudoLowering(Records, OS);
 120     break;
 121   case GenDAGISel:
 122     EmitDAGISel(Records, OS);
 123     break;
 124   case GenDFAPacketizer:
 125     EmitDFAPacketizer(Records, OS);
 126     break;
 127   case GenFastISel:
 128     EmitFastISel(Records, OS);
 129     break;
 130   case GenSubtarget:
 131     EmitSubtarget(Records, OS);
 132     break;
 133   case GenIntrinsic:
 134     EmitIntrinsics(Records, OS);
 135     break;
 136   case GenTgtIntrinsic:
 137     EmitIntrinsics(Records, OS, true);
 138     break;
 139   case GenEDInfo:
 140     EmitEnhancedDisassemblerInfo(Records, OS);
 141     break;
 142   case PrintEnums:
 143   {
 144     std::vector<Record*> Recs = Records.getAllDerivedDefinitions(Class);
 145     for (unsigned i = 0, e = Recs.size(); i != e; ++i)
 146       OS << Recs[i]->getName() << ", ";
 147     OS << "\n";
 148     break;
 149   }
 150   case PrintSets:
 151   {
 152     SetTheory Sets;
 153     Sets.addFieldExpander("Set", "Elements");
 154     std::vector<Record*> Recs = Records.getAllDerivedDefinitions("Set");
 155     for (unsigned i = 0, e = Recs.size(); i != e; ++i) {
 156       OS << Recs[i]->getName() << " = [";
 157       const std::vector<Record*> *Elts = Sets.expand(Recs[i]);
 158       assert(Elts && "Couldn't expand Set instance");
 159       for (unsigned ei = 0, ee = Elts->size(); ei != ee; ++ei)
 160         OS << ' ' << (*Elts)[ei]->getName();
 161       OS << " ]\n";
 162     }
 163     break;
 164   }
 165   }
 166
 167   return false;
 168 }
 169 }
 170
 171 int main(int argc, char **argv) {
 172   sys::PrintStackTraceOnErrorSignal();
 173   PrettyStackTraceProgram X(argc, argv);
 174   cl::ParseCommandLineOptions(argc, argv);
 175
 176   return TableGenMain(argv[0], &LLVMTableGenMain);
 177 }