utils/TableGen/TableGen.cpp

   1 //===- TableGen.cpp - Top-Level TableGen implementation -------------------===//
   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 // TableGen is a tool which can be used to build up a description of something,
  11 // then invoke one or more "tablegen backends" to emit information about the
  12 // description in some predefined format.  In practice, this is used by the LLVM
  13 // code generators to automate generation of a code generator through a
  14 // high-level description of the target.
  15 //
  16 //===----------------------------------------------------------------------===//
  17
  18 #include "AsmMatcherEmitter.h"
  19 #include "AsmWriterEmitter.h"
  20 #include "CallingConvEmitter.h"
  21 #include "ClangASTNodesEmitter.h"
  22 #include "ClangAttrEmitter.h"
  23 #include "ClangDiagnosticsEmitter.h"
  24 #include "ClangSACheckersEmitter.h"
  25 #include "CodeEmitterGen.h"
  26 #include "DAGISelEmitter.h"
  27 #include "DisassemblerEmitter.h"
  28 #include "EDEmitter.h"
  29 #include "FastISelEmitter.h"
  30 #include "InstrEnumEmitter.h"
  31 #include "InstrInfoEmitter.h"
  32 #include "IntrinsicEmitter.h"
  33 #include "LLVMCConfigurationEmitter.h"
  34 #include "NeonEmitter.h"
  35 #include "OptParserEmitter.h"
  36 #include "Record.h"
  37 #include "RegisterInfoEmitter.h"
  38 #include "ARMDecoderEmitter.h"
  39 #include "SubtargetEmitter.h"
  40 #include "TGParser.h"
  41 #include "llvm/ADT/OwningPtr.h"
  42 #include "llvm/Support/CommandLine.h"
  43 #include "llvm/Support/MemoryBuffer.h"
  44 #include "llvm/Support/PrettyStackTrace.h"
  45 #include "llvm/Support/ToolOutputFile.h"
  46 #include "llvm/Support/Signals.h"
  47 #include "llvm/Support/system_error.h"
  48 #include <algorithm>
  49 #include <cstdio>
  50 using namespace llvm;
  51
  52 enum ActionType {
  53   PrintRecords,
  54   GenEmitter,
  55   GenRegisterEnums, GenRegister, GenRegisterHeader,
  56   GenInstrEnums, GenInstrs, GenAsmWriter, GenAsmMatcher,
  57   GenARMDecoder,
  58   GenDisassembler,
  59   GenCallingConv,
  60   GenClangAttrClasses,
  61   GenClangAttrImpl,
  62   GenClangAttrList,
  63   GenClangAttrPCHRead,
  64   GenClangAttrPCHWrite,
  65   GenClangAttrSpellingList,
  66   GenClangDiagsDefs,
  67   GenClangDiagGroups,
  68   GenClangDeclNodes,
  69   GenClangStmtNodes,
  70   GenClangSACheckers,
  71   GenDAGISel,
  72   GenFastISel,
  73   GenOptParserDefs, GenOptParserImpl,
  74   GenSubtarget,
  75   GenIntrinsic,
  76   GenTgtIntrinsic,
  77   GenLLVMCConf,
  78   GenEDInfo,
  79   GenArmNeon,
  80   GenArmNeonSema,
  81   GenArmNeonTest,
  82   PrintEnums
  83 };
  84
  85 namespace {
  86   cl::opt<ActionType>
  87   Action(cl::desc("Action to perform:"),
  88          cl::values(clEnumValN(PrintRecords, "print-records",
  89                                "Print all records to stdout (default)"),
  90                     clEnumValN(GenEmitter, "gen-emitter",
  91                                "Generate machine code emitter"),
  92                     clEnumValN(GenRegisterEnums, "gen-register-enums",
  93                                "Generate enum values for registers"),
  94                     clEnumValN(GenRegister, "gen-register-desc",
  95                                "Generate a register info description"),
  96                     clEnumValN(GenRegisterHeader, "gen-register-desc-header",
  97                                "Generate a register info description header"),
  98                     clEnumValN(GenInstrEnums, "gen-instr-enums",
  99                                "Generate enum values for instructions"),
 100                     clEnumValN(GenInstrs, "gen-instr-desc",
 101                                "Generate instruction descriptions"),
 102                     clEnumValN(GenCallingConv, "gen-callingconv",
 103                                "Generate calling convention descriptions"),
 104                     clEnumValN(GenAsmWriter, "gen-asm-writer",
 105                                "Generate assembly writer"),
 106                     clEnumValN(GenARMDecoder, "gen-arm-decoder",
 107                                "Generate decoders for ARM/Thumb"),
 108                     clEnumValN(GenDisassembler, "gen-disassembler",
 109                                "Generate disassembler"),
 110                     clEnumValN(GenAsmMatcher, "gen-asm-matcher",
 111                                "Generate assembly instruction matcher"),
 112                     clEnumValN(GenDAGISel, "gen-dag-isel",
 113                                "Generate a DAG instruction selector"),
 114                     clEnumValN(GenFastISel, "gen-fast-isel",
 115                                "Generate a \"fast\" instruction selector"),
 116                     clEnumValN(GenOptParserDefs, "gen-opt-parser-defs",
 117                                "Generate option definitions"),
 118                     clEnumValN(GenOptParserImpl, "gen-opt-parser-impl",
 119                                "Generate option parser implementation"),
 120                     clEnumValN(GenSubtarget, "gen-subtarget",
 121                                "Generate subtarget enumerations"),
 122                     clEnumValN(GenIntrinsic, "gen-intrinsic",
 123                                "Generate intrinsic information"),
 124                     clEnumValN(GenTgtIntrinsic, "gen-tgt-intrinsic",
 125                                "Generate target intrinsic information"),
 126                     clEnumValN(GenClangAttrClasses, "gen-clang-attr-classes",
 127                                "Generate clang attribute clases"),
 128                     clEnumValN(GenClangAttrImpl, "gen-clang-attr-impl",
 129                                "Generate clang attribute implementations"),
 130                     clEnumValN(GenClangAttrList, "gen-clang-attr-list",
 131                                "Generate a clang attribute list"),
 132                     clEnumValN(GenClangAttrPCHRead, "gen-clang-attr-pch-read",
 133                                "Generate clang PCH attribute reader"),
 134                     clEnumValN(GenClangAttrPCHWrite, "gen-clang-attr-pch-write",
 135                                "Generate clang PCH attribute writer"),
 136                     clEnumValN(GenClangAttrSpellingList, "gen-clang-attr-spelling-list",
 137                                "Generate a clang attribute spelling list"),
 138                     clEnumValN(GenClangDiagsDefs, "gen-clang-diags-defs",
 139                                "Generate Clang diagnostics definitions"),
 140                     clEnumValN(GenClangDiagGroups, "gen-clang-diag-groups",
 141                                "Generate Clang diagnostic groups"),
 142                     clEnumValN(GenClangDeclNodes, "gen-clang-decl-nodes",
 143                                "Generate Clang AST declaration nodes"),
 144                     clEnumValN(GenClangStmtNodes, "gen-clang-stmt-nodes",
 145                                "Generate Clang AST statement nodes"),
 146                     clEnumValN(GenClangSACheckers, "gen-clang-sa-checkers",
 147                                "Generate Clang Static Analyzer checkers"),
 148                     clEnumValN(GenLLVMCConf, "gen-llvmc",
 149                                "Generate LLVMC configuration library"),
 150                     clEnumValN(GenEDInfo, "gen-enhanced-disassembly-info",
 151                                "Generate enhanced disassembly info"),
 152                     clEnumValN(GenArmNeon, "gen-arm-neon",
 153                                "Generate arm_neon.h for clang"),
 154                     clEnumValN(GenArmNeonSema, "gen-arm-neon-sema",
 155                                "Generate ARM NEON sema support for clang"),
 156                     clEnumValN(GenArmNeonTest, "gen-arm-neon-test",
 157                                "Generate ARM NEON tests for clang"),
 158                     clEnumValN(PrintEnums, "print-enums",
 159                                "Print enum values for a class"),
 160                     clEnumValEnd));
 161
 162   cl::opt<std::string>
 163   Class("class", cl::desc("Print Enum list for this class"),
 164         cl::value_desc("class name"));
 165
 166   cl::opt<std::string>
 167   OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename"),
 168                  cl::init("-"));
 169
 170   cl::opt<std::string>
 171   InputFilename(cl::Positional, cl::desc("<input file>"), cl::init("-"));
 172
 173   cl::list<std::string>
 174   IncludeDirs("I", cl::desc("Directory of include files"),
 175               cl::value_desc("directory"), cl::Prefix);
 176
 177   cl::opt<std::string>
 178   ClangComponent("clang-component",
 179                  cl::desc("Only use warnings from specified component"),
 180                  cl::value_desc("component"), cl::Hidden);
 181 }
 182
 183
 184 static SourceMgr SrcMgr;
 185
 186 void llvm::PrintError(SMLoc ErrorLoc, const Twine &Msg) {
 187   SrcMgr.PrintMessage(ErrorLoc, Msg, "error");
 188 }
 189
 190
 191
 192 /// ParseFile - this function begins the parsing of the specified tablegen
 193 /// file.
 194 static bool ParseFile(const std::string &Filename,
 195                       const std::vector<std::string> &IncludeDirs,
 196                       SourceMgr &SrcMgr,
 197                       RecordKeeper &Records) {
 198   OwningPtr<MemoryBuffer> File;
 199   if (error_code ec = MemoryBuffer::getFileOrSTDIN(Filename.c_str(), File)) {
 200     errs() << "Could not open input file '" << Filename << "': "
 201            << ec.message() <<"\n";
 202     return true;
 203   }
 204   MemoryBuffer *F = File.take();
 205
 206   // Tell SrcMgr about this buffer, which is what TGParser will pick up.
 207   SrcMgr.AddNewSourceBuffer(F, SMLoc());
 208
 209   // Record the location of the include directory so that the lexer can find
 210   // it later.
 211   SrcMgr.setIncludeDirs(IncludeDirs);
 212
 213   TGParser Parser(SrcMgr, Records);
 214
 215   return Parser.ParseFile();
 216 }
 217
 218 int main(int argc, char **argv) {
 219   RecordKeeper Records;
 220
 221   sys::PrintStackTraceOnErrorSignal();
 222   PrettyStackTraceProgram X(argc, argv);
 223   cl::ParseCommandLineOptions(argc, argv);
 224
 225
 226   // Parse the input file.
 227   if (ParseFile(InputFilename, IncludeDirs, SrcMgr, Records))
 228     return 1;
 229
 230   std::string Error;
 231   tool_output_file Out(OutputFilename.c_str(), Error);
 232   if (!Error.empty()) {
 233     errs() << argv[0] << ": error opening " << OutputFilename
 234            << ":" << Error << "\n";
 235     return 1;
 236   }
 237
 238   try {
 239     switch (Action) {
 240     case PrintRecords:
 241       Out.os() << Records;           // No argument, dump all contents
 242       break;
 243     case GenEmitter:
 244       CodeEmitterGen(Records).run(Out.os());
 245       break;
 246
 247     case GenRegisterEnums:
 248       RegisterInfoEmitter(Records).runEnums(Out.os());
 249       break;
 250     case GenRegister:
 251       RegisterInfoEmitter(Records).run(Out.os());
 252       break;
 253     case GenRegisterHeader:
 254       RegisterInfoEmitter(Records).runHeader(Out.os());
 255       break;
 256     case GenInstrEnums:
 257       InstrEnumEmitter(Records).run(Out.os());
 258       break;
 259     case GenInstrs:
 260       InstrInfoEmitter(Records).run(Out.os());
 261       break;
 262     case GenCallingConv:
 263       CallingConvEmitter(Records).run(Out.os());
 264       break;
 265     case GenAsmWriter:
 266       AsmWriterEmitter(Records).run(Out.os());
 267       break;
 268     case GenARMDecoder:
 269       ARMDecoderEmitter(Records).run(Out.os());
 270       break;
 271     case GenAsmMatcher:
 272       AsmMatcherEmitter(Records).run(Out.os());
 273       break;
 274     case GenClangAttrClasses:
 275       ClangAttrClassEmitter(Records).run(Out.os());
 276       break;
 277     case GenClangAttrImpl:
 278       ClangAttrImplEmitter(Records).run(Out.os());
 279       break;
 280     case GenClangAttrList:
 281       ClangAttrListEmitter(Records).run(Out.os());
 282       break;
 283     case GenClangAttrPCHRead:
 284       ClangAttrPCHReadEmitter(Records).run(Out.os());
 285       break;
 286     case GenClangAttrPCHWrite:
 287       ClangAttrPCHWriteEmitter(Records).run(Out.os());
 288       break;
 289     case GenClangAttrSpellingList:
 290       ClangAttrSpellingListEmitter(Records).run(Out.os());
 291       break;
 292     case GenClangDiagsDefs:
 293       ClangDiagsDefsEmitter(Records, ClangComponent).run(Out.os());
 294       break;
 295     case GenClangDiagGroups:
 296       ClangDiagGroupsEmitter(Records).run(Out.os());
 297       break;
 298     case GenClangDeclNodes:
 299       ClangASTNodesEmitter(Records, "Decl", "Decl").run(Out.os());
 300       ClangDeclContextEmitter(Records).run(Out.os());
 301       break;
 302     case GenClangStmtNodes:
 303       ClangASTNodesEmitter(Records, "Stmt", "").run(Out.os());
 304       break;
 305     case GenClangSACheckers:
 306       ClangSACheckersEmitter(Records).run(Out.os());
 307       break;
 308     case GenDisassembler:
 309       DisassemblerEmitter(Records).run(Out.os());
 310       break;
 311     case GenOptParserDefs:
 312       OptParserEmitter(Records, true).run(Out.os());
 313       break;
 314     case GenOptParserImpl:
 315       OptParserEmitter(Records, false).run(Out.os());
 316       break;
 317     case GenDAGISel:
 318       DAGISelEmitter(Records).run(Out.os());
 319       break;
 320     case GenFastISel:
 321       FastISelEmitter(Records).run(Out.os());
 322       break;
 323     case GenSubtarget:
 324       SubtargetEmitter(Records).run(Out.os());
 325       break;
 326     case GenIntrinsic:
 327       IntrinsicEmitter(Records).run(Out.os());
 328       break;
 329     case GenTgtIntrinsic:
 330       IntrinsicEmitter(Records, true).run(Out.os());
 331       break;
 332     case GenLLVMCConf:
 333       LLVMCConfigurationEmitter(Records).run(Out.os());
 334       break;
 335     case GenEDInfo:
 336       EDEmitter(Records).run(Out.os());
 337       break;
 338     case GenArmNeon:
 339       NeonEmitter(Records).run(Out.os());
 340       break;
 341     case GenArmNeonSema:
 342       NeonEmitter(Records).runHeader(Out.os());
 343       break;
 344     case GenArmNeonTest:
 345       NeonEmitter(Records).runTests(Out.os());
 346       break;
 347     case PrintEnums:
 348     {
 349       std::vector<Record*> Recs = Records.getAllDerivedDefinitions(Class);
 350       for (unsigned i = 0, e = Recs.size(); i != e; ++i)
 351         Out.os() << Recs[i]->getName() << ", ";
 352       Out.os() << "\n";
 353       break;
 354     }
 355     default:
 356       assert(1 && "Invalid Action");
 357       return 1;
 358     }
 359
 360     // Declare success.
 361     Out.keep();
 362     return 0;
 363
 364   } catch (const TGError &Error) {
 365     errs() << argv[0] << ": error:\n";
 366     PrintError(Error.getLoc(), Error.getMessage());
 367
 368   } catch (const std::string &Error) {
 369     errs() << argv[0] << ": " << Error << "\n";
 370   } catch (const char *Error) {
 371     errs() << argv[0] << ": " << Error << "\n";
 372   } catch (...) {
 373     errs() << argv[0] << ": Unknown unexpected exception occurred.\n";
 374   }
 375
 376   return 1;
 377 }