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 "ClangASTNodesEmitter.h"
22 #include "ClangDiagnosticsEmitter.h"
23 #include "CodeEmitterGen.h"
24 #include "DAGISelEmitter.h"
25 #include "DisassemblerEmitter.h"
26 #include "EDEmitter.h"
27 #include "FastISelEmitter.h"
28 #include "InstrEnumEmitter.h"
29 #include "InstrInfoEmitter.h"
30 #include "IntrinsicEmitter.h"
31 #include "LLVMCConfigurationEmitter.h"
32 #include "NeonEmitter.h"
33 #include "OptParserEmitter.h"
35 #include "RegisterInfoEmitter.h"
36 #include "ARMDecoderEmitter.h"
37 #include "SubtargetEmitter.h"
39 #include "llvm/Support/CommandLine.h"
40 #include "llvm/Support/MemoryBuffer.h"
41 #include "llvm/Support/PrettyStackTrace.h"
42 #include "llvm/Support/raw_ostream.h"
43 #include "llvm/System/Signals.h"
51 GenRegisterEnums, GenRegister, GenRegisterHeader,
52 GenInstrEnums, GenInstrs, GenAsmWriter, GenAsmMatcher,
62 GenOptParserDefs, GenOptParserImpl,
67 GenEDHeader, GenEDInfo,
74 Action(cl::desc("Action to perform:"),
75 cl::values(clEnumValN(PrintRecords, "print-records",
76 "Print all records to stdout (default)"),
77 clEnumValN(GenEmitter, "gen-emitter",
78 "Generate machine code emitter"),
79 clEnumValN(GenRegisterEnums, "gen-register-enums",
80 "Generate enum values for registers"),
81 clEnumValN(GenRegister, "gen-register-desc",
82 "Generate a register info description"),
83 clEnumValN(GenRegisterHeader, "gen-register-desc-header",
84 "Generate a register info description header"),
85 clEnumValN(GenInstrEnums, "gen-instr-enums",
86 "Generate enum values for instructions"),
87 clEnumValN(GenInstrs, "gen-instr-desc",
88 "Generate instruction descriptions"),
89 clEnumValN(GenCallingConv, "gen-callingconv",
90 "Generate calling convention descriptions"),
91 clEnumValN(GenAsmWriter, "gen-asm-writer",
92 "Generate assembly writer"),
93 clEnumValN(GenARMDecoder, "gen-arm-decoder",
94 "Generate decoders for ARM/Thumb"),
95 clEnumValN(GenDisassembler, "gen-disassembler",
96 "Generate disassembler"),
97 clEnumValN(GenAsmMatcher, "gen-asm-matcher",
98 "Generate assembly instruction matcher"),
99 clEnumValN(GenDAGISel, "gen-dag-isel",
100 "Generate a DAG instruction selector"),
101 clEnumValN(GenFastISel, "gen-fast-isel",
102 "Generate a \"fast\" instruction selector"),
103 clEnumValN(GenOptParserDefs, "gen-opt-parser-defs",
104 "Generate option definitions"),
105 clEnumValN(GenOptParserImpl, "gen-opt-parser-impl",
106 "Generate option parser implementation"),
107 clEnumValN(GenSubtarget, "gen-subtarget",
108 "Generate subtarget enumerations"),
109 clEnumValN(GenIntrinsic, "gen-intrinsic",
110 "Generate intrinsic information"),
111 clEnumValN(GenTgtIntrinsic, "gen-tgt-intrinsic",
112 "Generate target intrinsic information"),
113 clEnumValN(GenClangDiagsDefs, "gen-clang-diags-defs",
114 "Generate Clang diagnostics definitions"),
115 clEnumValN(GenClangDiagGroups, "gen-clang-diag-groups",
116 "Generate Clang diagnostic groups"),
117 clEnumValN(GenClangDeclNodes, "gen-clang-decl-nodes",
118 "Generate Clang AST statement nodes"),
119 clEnumValN(GenClangStmtNodes, "gen-clang-stmt-nodes",
120 "Generate Clang AST statement nodes"),
121 clEnumValN(GenLLVMCConf, "gen-llvmc",
122 "Generate LLVMC configuration library"),
123 clEnumValN(GenEDHeader, "gen-enhanced-disassembly-header",
124 "Generate enhanced disassembly info header"),
125 clEnumValN(GenEDInfo, "gen-enhanced-disassembly-info",
126 "Generate enhanced disassembly info"),
127 clEnumValN(GenNeonHeader, "gen-arm-neon-header",
128 "Generate arm_neon.h for clang"),
129 clEnumValN(PrintEnums, "print-enums",
130 "Print enum values for a class"),
134 Class("class", cl::desc("Print Enum list for this class"),
135 cl::value_desc("class name"));
138 OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename"),
142 InputFilename(cl::Positional, cl::desc("<input file>"), cl::init("-"));
144 cl::list<std::string>
145 IncludeDirs("I", cl::desc("Directory of include files"),
146 cl::value_desc("directory"), cl::Prefix);
149 ClangComponent("clang-component",
150 cl::desc("Only use warnings from specified component"),
151 cl::value_desc("component"), cl::Hidden);
155 // FIXME: Eliminate globals from tblgen.
156 RecordKeeper llvm::Records;
158 static SourceMgr SrcMgr;
160 void llvm::PrintError(SMLoc ErrorLoc, const std::string &Msg) {
161 SrcMgr.PrintMessage(ErrorLoc, Msg, "error");
166 /// ParseFile - this function begins the parsing of the specified tablegen
168 static bool ParseFile(const std::string &Filename,
169 const std::vector<std::string> &IncludeDirs,
171 std::string ErrorStr;
172 MemoryBuffer *F = MemoryBuffer::getFileOrSTDIN(Filename.c_str(), &ErrorStr);
174 errs() << "Could not open input file '" << Filename << "': "
179 // Tell SrcMgr about this buffer, which is what TGParser will pick up.
180 SrcMgr.AddNewSourceBuffer(F, SMLoc());
182 // Record the location of the include directory so that the lexer can find
184 SrcMgr.setIncludeDirs(IncludeDirs);
186 TGParser Parser(SrcMgr);
188 return Parser.ParseFile();
191 int main(int argc, char **argv) {
192 sys::PrintStackTraceOnErrorSignal();
193 PrettyStackTraceProgram X(argc, argv);
194 cl::ParseCommandLineOptions(argc, argv);
197 // Parse the input file.
198 if (ParseFile(InputFilename, IncludeDirs, SrcMgr))
202 raw_fd_ostream Out(OutputFilename.c_str(), Error);
203 if (!Error.empty()) {
204 errs() << argv[0] << ": error opening " << OutputFilename
205 << ":" << Error << "\n";
209 // Make sure the file gets removed if *gasp* tablegen crashes...
210 sys::RemoveFileOnSignal(sys::Path(OutputFilename));
215 Out << Records; // No argument, dump all contents
218 CodeEmitterGen(Records).run(Out);
221 case GenRegisterEnums:
222 RegisterInfoEmitter(Records).runEnums(Out);
225 RegisterInfoEmitter(Records).run(Out);
227 case GenRegisterHeader:
228 RegisterInfoEmitter(Records).runHeader(Out);
231 InstrEnumEmitter(Records).run(Out);
234 InstrInfoEmitter(Records).run(Out);
237 CallingConvEmitter(Records).run(Out);
240 AsmWriterEmitter(Records).run(Out);
243 ARMDecoderEmitter(Records).run(Out);
246 AsmMatcherEmitter(Records).run(Out);
248 case GenClangDiagsDefs:
249 ClangDiagsDefsEmitter(Records, ClangComponent).run(Out);
251 case GenClangDiagGroups:
252 ClangDiagGroupsEmitter(Records).run(Out);
254 case GenClangDeclNodes:
255 ClangASTNodesEmitter(Records, "Decl", "Decl").run(Out);
256 ClangDeclContextEmitter(Records).run(Out);
258 case GenClangStmtNodes:
259 ClangASTNodesEmitter(Records, "Stmt", "").run(Out);
261 case GenDisassembler:
262 DisassemblerEmitter(Records).run(Out);
264 case GenOptParserDefs:
265 OptParserEmitter(Records, true).run(Out);
267 case GenOptParserImpl:
268 OptParserEmitter(Records, false).run(Out);
271 DAGISelEmitter(Records).run(Out);
274 FastISelEmitter(Records).run(Out);
277 SubtargetEmitter(Records).run(Out);
280 IntrinsicEmitter(Records).run(Out);
282 case GenTgtIntrinsic:
283 IntrinsicEmitter(Records, true).run(Out);
286 LLVMCConfigurationEmitter(Records).run(Out);
289 EDEmitter(Records).runHeader(Out);
292 EDEmitter(Records).run(Out);
295 NeonEmitter(Records).run(Out);
299 std::vector<Record*> Recs = Records.getAllDerivedDefinitions(Class);
300 for (unsigned i = 0, e = Recs.size(); i != e; ++i)
301 Out << Recs[i]->getName() << ", ";
306 assert(1 && "Invalid Action");
312 } catch (const TGError &Error) {
313 errs() << argv[0] << ": error:\n";
314 PrintError(Error.getLoc(), Error.getMessage());
316 } catch (const std::string &Error) {
317 errs() << argv[0] << ": " << Error << "\n";
318 } catch (const char *Error) {
319 errs() << argv[0] << ": " << Error << "\n";
321 errs() << argv[0] << ": Unknown unexpected exception occurred.\n";
324 if (OutputFilename != "-")
325 std::remove(OutputFilename.c_str()); // Remove the file, it's broken