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Diffstat (limited to 'contrib/llvm/utils/TableGen/TableGen.cpp')
| -rw-r--r-- | contrib/llvm/utils/TableGen/TableGen.cpp | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/contrib/llvm/utils/TableGen/TableGen.cpp b/contrib/llvm/utils/TableGen/TableGen.cpp new file mode 100644 index 0000000..17435f6 --- /dev/null +++ b/contrib/llvm/utils/TableGen/TableGen.cpp @@ -0,0 +1,321 @@ +//===- TableGen.cpp - Top-Level TableGen implementation -------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// TableGen is a tool which can be used to build up a description of something, +// then invoke one or more "tablegen backends" to emit information about the +// description in some predefined format. In practice, this is used by the LLVM +// code generators to automate generation of a code generator through a +// high-level description of the target. +// +//===----------------------------------------------------------------------===// + +#include "AsmMatcherEmitter.h" +#include "AsmWriterEmitter.h" +#include "CallingConvEmitter.h" +#include "ClangASTNodesEmitter.h" +#include "ClangDiagnosticsEmitter.h" +#include "CodeEmitterGen.h" +#include "DAGISelEmitter.h" +#include "DisassemblerEmitter.h" +#include "EDEmitter.h" +#include "FastISelEmitter.h" +#include "InstrEnumEmitter.h" +#include "InstrInfoEmitter.h" +#include "IntrinsicEmitter.h" +#include "LLVMCConfigurationEmitter.h" +#include "OptParserEmitter.h" +#include "Record.h" +#include "RegisterInfoEmitter.h" +#include "ARMDecoderEmitter.h" +#include "SubtargetEmitter.h" +#include "TGParser.h" +#include "llvm/Support/CommandLine.h" +#include "llvm/Support/MemoryBuffer.h" +#include "llvm/Support/PrettyStackTrace.h" +#include "llvm/Support/raw_ostream.h" +#include "llvm/System/Signals.h" +#include <algorithm> +#include <cstdio> +using namespace llvm; + +enum ActionType { + PrintRecords, + GenEmitter, + GenRegisterEnums, GenRegister, GenRegisterHeader, + GenInstrEnums, GenInstrs, GenAsmWriter, GenAsmMatcher, + GenARMDecoder, + GenDisassembler, + GenCallingConv, + GenClangDiagsDefs, + GenClangDiagGroups, + GenClangStmtNodes, + GenDAGISel, + GenFastISel, + GenOptParserDefs, GenOptParserImpl, + GenSubtarget, + GenIntrinsic, + GenTgtIntrinsic, + GenLLVMCConf, + GenEDHeader, GenEDInfo, + PrintEnums +}; + +namespace { + cl::opt<ActionType> + Action(cl::desc("Action to perform:"), + cl::values(clEnumValN(PrintRecords, "print-records", + "Print all records to stdout (default)"), + clEnumValN(GenEmitter, "gen-emitter", + "Generate machine code emitter"), + clEnumValN(GenRegisterEnums, "gen-register-enums", + "Generate enum values for registers"), + clEnumValN(GenRegister, "gen-register-desc", + "Generate a register info description"), + clEnumValN(GenRegisterHeader, "gen-register-desc-header", + "Generate a register info description header"), + clEnumValN(GenInstrEnums, "gen-instr-enums", + "Generate enum values for instructions"), + clEnumValN(GenInstrs, "gen-instr-desc", + "Generate instruction descriptions"), + clEnumValN(GenCallingConv, "gen-callingconv", + "Generate calling convention descriptions"), + clEnumValN(GenAsmWriter, "gen-asm-writer", + "Generate assembly writer"), + clEnumValN(GenARMDecoder, "gen-arm-decoder", + "Generate decoders for ARM/Thumb"), + clEnumValN(GenDisassembler, "gen-disassembler", + "Generate disassembler"), + clEnumValN(GenAsmMatcher, "gen-asm-matcher", + "Generate assembly instruction matcher"), + clEnumValN(GenDAGISel, "gen-dag-isel", + "Generate a DAG instruction selector"), + clEnumValN(GenFastISel, "gen-fast-isel", + "Generate a \"fast\" instruction selector"), + clEnumValN(GenOptParserDefs, "gen-opt-parser-defs", + "Generate option definitions"), + clEnumValN(GenOptParserImpl, "gen-opt-parser-impl", + "Generate option parser implementation"), + clEnumValN(GenSubtarget, "gen-subtarget", + "Generate subtarget enumerations"), + clEnumValN(GenIntrinsic, "gen-intrinsic", + "Generate intrinsic information"), + clEnumValN(GenTgtIntrinsic, "gen-tgt-intrinsic", + "Generate target intrinsic information"), + clEnumValN(GenClangDiagsDefs, "gen-clang-diags-defs", + "Generate Clang diagnostics definitions"), + clEnumValN(GenClangDiagGroups, "gen-clang-diag-groups", + "Generate Clang diagnostic groups"), + clEnumValN(GenClangStmtNodes, "gen-clang-stmt-nodes", + "Generate Clang AST statement nodes"), + clEnumValN(GenLLVMCConf, "gen-llvmc", + "Generate LLVMC configuration library"), + clEnumValN(GenEDHeader, "gen-enhanced-disassembly-header", + "Generate enhanced disassembly info header"), + clEnumValN(GenEDInfo, "gen-enhanced-disassembly-info", + "Generate enhanced disassembly info"), + clEnumValN(PrintEnums, "print-enums", + "Print enum values for a class"), + clEnumValEnd)); + + cl::opt<std::string> + Class("class", cl::desc("Print Enum list for this class"), + cl::value_desc("class name")); + + cl::opt<std::string> + OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename"), + cl::init("-")); + + cl::opt<std::string> + InputFilename(cl::Positional, cl::desc("<input file>"), cl::init("-")); + + cl::list<std::string> + IncludeDirs("I", cl::desc("Directory of include files"), + cl::value_desc("directory"), cl::Prefix); + + cl::opt<std::string> + ClangComponent("clang-component", + cl::desc("Only use warnings from specified component"), + cl::value_desc("component"), cl::Hidden); +} + + +// FIXME: Eliminate globals from tblgen. +RecordKeeper llvm::Records; + +static SourceMgr SrcMgr; + +void llvm::PrintError(SMLoc ErrorLoc, const std::string &Msg) { + SrcMgr.PrintMessage(ErrorLoc, Msg, "error"); +} + + + +/// ParseFile - this function begins the parsing of the specified tablegen +/// file. +static bool ParseFile(const std::string &Filename, + const std::vector<std::string> &IncludeDirs, + SourceMgr &SrcMgr) { + std::string ErrorStr; + MemoryBuffer *F = MemoryBuffer::getFileOrSTDIN(Filename.c_str(), &ErrorStr); + if (F == 0) { + errs() << "Could not open input file '" << Filename << "': " + << ErrorStr <<"\n"; + return true; + } + + // Tell SrcMgr about this buffer, which is what TGParser will pick up. + SrcMgr.AddNewSourceBuffer(F, SMLoc()); + + // Record the location of the include directory so that the lexer can find + // it later. + SrcMgr.setIncludeDirs(IncludeDirs); + + TGParser Parser(SrcMgr); + + return Parser.ParseFile(); +} + +int main(int argc, char **argv) { + sys::PrintStackTraceOnErrorSignal(); + PrettyStackTraceProgram X(argc, argv); + cl::ParseCommandLineOptions(argc, argv); + + + // Parse the input file. + if (ParseFile(InputFilename, IncludeDirs, SrcMgr)) + return 1; + + raw_ostream *Out = &outs(); + if (OutputFilename != "-") { + std::string Error; + Out = new raw_fd_ostream(OutputFilename.c_str(), Error); + + if (!Error.empty()) { + errs() << argv[0] << ": error opening " << OutputFilename + << ":" << Error << "\n"; + return 1; + } + + // Make sure the file gets removed if *gasp* tablegen crashes... + sys::RemoveFileOnSignal(sys::Path(OutputFilename)); + } + + try { + switch (Action) { + case PrintRecords: + *Out << Records; // No argument, dump all contents + break; + case GenEmitter: + CodeEmitterGen(Records).run(*Out); + break; + + case GenRegisterEnums: + RegisterInfoEmitter(Records).runEnums(*Out); + break; + case GenRegister: + RegisterInfoEmitter(Records).run(*Out); + break; + case GenRegisterHeader: + RegisterInfoEmitter(Records).runHeader(*Out); + break; + case GenInstrEnums: + InstrEnumEmitter(Records).run(*Out); + break; + case GenInstrs: + InstrInfoEmitter(Records).run(*Out); + break; + case GenCallingConv: + CallingConvEmitter(Records).run(*Out); + break; + case GenAsmWriter: + AsmWriterEmitter(Records).run(*Out); + break; + case GenARMDecoder: + ARMDecoderEmitter(Records).run(*Out); + break; + case GenAsmMatcher: + AsmMatcherEmitter(Records).run(*Out); + break; + case GenClangDiagsDefs: + ClangDiagsDefsEmitter(Records, ClangComponent).run(*Out); + break; + case GenClangDiagGroups: + ClangDiagGroupsEmitter(Records).run(*Out); + break; + case GenClangStmtNodes: + ClangStmtNodesEmitter(Records).run(*Out); + break; + case GenDisassembler: + DisassemblerEmitter(Records).run(*Out); + break; + case GenOptParserDefs: + OptParserEmitter(Records, true).run(*Out); + break; + case GenOptParserImpl: + OptParserEmitter(Records, false).run(*Out); + break; + case GenDAGISel: + DAGISelEmitter(Records).run(*Out); + break; + case GenFastISel: + FastISelEmitter(Records).run(*Out); + break; + case GenSubtarget: + SubtargetEmitter(Records).run(*Out); + break; + case GenIntrinsic: + IntrinsicEmitter(Records).run(*Out); + break; + case GenTgtIntrinsic: + IntrinsicEmitter(Records, true).run(*Out); + break; + case GenLLVMCConf: + LLVMCConfigurationEmitter(Records).run(*Out); + break; + case GenEDHeader: + EDEmitter(Records).runHeader(*Out); + break; + case GenEDInfo: + EDEmitter(Records).run(*Out); + break; + case PrintEnums: + { + std::vector<Record*> Recs = Records.getAllDerivedDefinitions(Class); + for (unsigned i = 0, e = Recs.size(); i != e; ++i) + *Out << Recs[i]->getName() << ", "; + *Out << "\n"; + break; + } + default: + assert(1 && "Invalid Action"); + return 1; + } + + if (Out != &outs()) + delete Out; // Close the file + return 0; + + } catch (const TGError &Error) { + errs() << argv[0] << ": error:\n"; + PrintError(Error.getLoc(), Error.getMessage()); + + } catch (const std::string &Error) { + errs() << argv[0] << ": " << Error << "\n"; + } catch (const char *Error) { + errs() << argv[0] << ": " << Error << "\n"; + } catch (...) { + errs() << argv[0] << ": Unknown unexpected exception occurred.\n"; + } + + if (Out != &outs()) { + delete Out; // Close the file + std::remove(OutputFilename.c_str()); // Remove the file, it's broken + } + return 1; +} |
