1 //===- TableGen.cpp - Top-Level TableGen implementation -------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
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.
16 //===----------------------------------------------------------------------===//
18 #include "AsmMatcherEmitter.h"
19 #include "AsmWriterEmitter.h"
20 #include "CallingConvEmitter.h"
21 #include "ClangDiagnosticsEmitter.h"
22 #include "CodeEmitterGen.h"
23 #include "DAGISelEmitter.h"
24 #include "FastISelEmitter.h"
25 #include "InstrEnumEmitter.h"
26 #include "InstrInfoEmitter.h"
27 #include "IntrinsicEmitter.h"
28 #include "LLVMCConfigurationEmitter.h"
29 #include "OptParserEmitter.h"
31 #include "RegisterInfoEmitter.h"
32 #include "SubtargetEmitter.h"
34 #include "llvm/Support/CommandLine.h"
35 #include "llvm/Support/FileUtilities.h"
36 #include "llvm/Support/MemoryBuffer.h"
37 #include "llvm/Support/PrettyStackTrace.h"
38 #include "llvm/Support/raw_ostream.h"
39 #include "llvm/System/Signals.h"
47 GenRegisterEnums, GenRegister, GenRegisterHeader,
48 GenInstrEnums, GenInstrs, GenAsmWriter, GenAsmMatcher,
54 GenOptParserDefs, GenOptParserImpl,
64 Action(cl::desc("Action to perform:"),
65 cl::values(clEnumValN(PrintRecords, "print-records",
66 "Print all records to stdout (default)"),
67 clEnumValN(GenEmitter, "gen-emitter",
68 "Generate machine code emitter"),
69 clEnumValN(GenRegisterEnums, "gen-register-enums",
70 "Generate enum values for registers"),
71 clEnumValN(GenRegister, "gen-register-desc",
72 "Generate a register info description"),
73 clEnumValN(GenRegisterHeader, "gen-register-desc-header",
74 "Generate a register info description header"),
75 clEnumValN(GenInstrEnums, "gen-instr-enums",
76 "Generate enum values for instructions"),
77 clEnumValN(GenInstrs, "gen-instr-desc",
78 "Generate instruction descriptions"),
79 clEnumValN(GenCallingConv, "gen-callingconv",
80 "Generate calling convention descriptions"),
81 clEnumValN(GenAsmWriter, "gen-asm-writer",
82 "Generate assembly writer"),
83 clEnumValN(GenAsmMatcher, "gen-asm-matcher",
84 "Generate assembly instruction matcher"),
85 clEnumValN(GenDAGISel, "gen-dag-isel",
86 "Generate a DAG instruction selector"),
87 clEnumValN(GenFastISel, "gen-fast-isel",
88 "Generate a \"fast\" instruction selector"),
89 clEnumValN(GenOptParserDefs, "gen-opt-parser-defs",
90 "Generate option definitions"),
91 clEnumValN(GenOptParserImpl, "gen-opt-parser-impl",
92 "Generate option parser implementation"),
93 clEnumValN(GenSubtarget, "gen-subtarget",
94 "Generate subtarget enumerations"),
95 clEnumValN(GenIntrinsic, "gen-intrinsic",
96 "Generate intrinsic information"),
97 clEnumValN(GenTgtIntrinsic, "gen-tgt-intrinsic",
98 "Generate target intrinsic information"),
99 clEnumValN(GenClangDiagsDefs, "gen-clang-diags-defs",
100 "Generate Clang diagnostics definitions"),
101 clEnumValN(GenClangDiagGroups, "gen-clang-diag-groups",
102 "Generate Clang diagnostic groups"),
103 clEnumValN(GenLLVMCConf, "gen-llvmc",
104 "Generate LLVMC configuration library"),
105 clEnumValN(PrintEnums, "print-enums",
106 "Print enum values for a class"),
110 Class("class", cl::desc("Print Enum list for this class"),
111 cl::value_desc("class name"));
114 OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename"),
118 InputFilename(cl::Positional, cl::desc("<input file>"), cl::init("-"));
120 cl::list<std::string>
121 IncludeDirs("I", cl::desc("Directory of include files"),
122 cl::value_desc("directory"), cl::Prefix);
125 ClangComponent("clang-component",
126 cl::desc("Only use warnings from specified component"),
127 cl::value_desc("component"), cl::Hidden);
131 // FIXME: Eliminate globals from tblgen.
132 RecordKeeper llvm::Records;
134 static SourceMgr SrcMgr;
136 void llvm::PrintError(SMLoc ErrorLoc, const std::string &Msg) {
137 SrcMgr.PrintMessage(ErrorLoc, Msg, "error");
142 /// ParseFile - this function begins the parsing of the specified tablegen
144 static bool ParseFile(const std::string &Filename,
145 const std::vector<std::string> &IncludeDirs,
147 std::string ErrorStr;
148 MemoryBuffer *F = MemoryBuffer::getFileOrSTDIN(Filename.c_str(), &ErrorStr);
150 errs() << "Could not open input file '" << Filename << "': "
155 // Tell SrcMgr about this buffer, which is what TGParser will pick up.
156 SrcMgr.AddNewSourceBuffer(F, SMLoc());
158 // Record the location of the include directory so that the lexer can find
160 SrcMgr.setIncludeDirs(IncludeDirs);
162 TGParser Parser(SrcMgr);
164 return Parser.ParseFile();
167 int main(int argc, char **argv) {
168 sys::PrintStackTraceOnErrorSignal();
169 PrettyStackTraceProgram X(argc, argv);
170 cl::ParseCommandLineOptions(argc, argv);
173 // Parse the input file.
174 if (ParseFile(InputFilename, IncludeDirs, SrcMgr))
177 raw_ostream *Out = &outs();
178 if (OutputFilename != "-") {
180 Out = new raw_fd_ostream(OutputFilename.c_str(), Error);
182 if (!Error.empty()) {
183 errs() << argv[0] << ": error opening " << OutputFilename
184 << ":" << Error << "\n";
188 // Make sure the file gets removed if *gasp* tablegen crashes...
189 sys::RemoveFileOnSignal(sys::Path(OutputFilename));
195 *Out << Records; // No argument, dump all contents
198 CodeEmitterGen(Records).run(*Out);
201 case GenRegisterEnums:
202 RegisterInfoEmitter(Records).runEnums(*Out);
205 RegisterInfoEmitter(Records).run(*Out);
207 case GenRegisterHeader:
208 RegisterInfoEmitter(Records).runHeader(*Out);
211 InstrEnumEmitter(Records).run(*Out);
214 InstrInfoEmitter(Records).run(*Out);
217 CallingConvEmitter(Records).run(*Out);
220 AsmWriterEmitter(Records).run(*Out);
223 AsmMatcherEmitter(Records).run(*Out);
225 case GenClangDiagsDefs:
226 ClangDiagsDefsEmitter(Records, ClangComponent).run(*Out);
228 case GenClangDiagGroups:
229 ClangDiagGroupsEmitter(Records).run(*Out);
231 case GenOptParserDefs:
232 OptParserEmitter(Records, true).run(*Out);
234 case GenOptParserImpl:
235 OptParserEmitter(Records, false).run(*Out);
238 DAGISelEmitter(Records).run(*Out);
241 FastISelEmitter(Records).run(*Out);
244 SubtargetEmitter(Records).run(*Out);
247 IntrinsicEmitter(Records).run(*Out);
249 case GenTgtIntrinsic:
250 IntrinsicEmitter(Records, true).run(*Out);
253 LLVMCConfigurationEmitter(Records).run(*Out);
257 std::vector<Record*> Recs = Records.getAllDerivedDefinitions(Class);
258 for (unsigned i = 0, e = Recs.size(); i != e; ++i)
259 *Out << Recs[i]->getName() << ", ";
264 assert(1 && "Invalid Action");
269 delete Out; // Close the file
272 } catch (const TGError &Error) {
273 errs() << argv[0] << ": error:\n";
274 PrintError(Error.getLoc(), Error.getMessage());
276 } catch (const std::string &Error) {
277 errs() << argv[0] << ": " << Error << "\n";
278 } catch (const char *Error) {
279 errs() << argv[0] << ": " << Error << "\n";
281 errs() << argv[0] << ": Unknown unexpected exception occurred.\n";
284 if (Out != &outs()) {
285 delete Out; // Close the file
286 std::remove(OutputFilename.c_str()); // Remove the file, it's broken