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,
75 Action(cl::desc("Action to perform:"),
76 cl::values(clEnumValN(PrintRecords, "print-records",
77 "Print all records to stdout (default)"),
78 clEnumValN(GenEmitter, "gen-emitter",
79 "Generate machine code emitter"),
80 clEnumValN(GenRegisterEnums, "gen-register-enums",
81 "Generate enum values for registers"),
82 clEnumValN(GenRegister, "gen-register-desc",
83 "Generate a register info description"),
84 clEnumValN(GenRegisterHeader, "gen-register-desc-header",
85 "Generate a register info description header"),
86 clEnumValN(GenInstrEnums, "gen-instr-enums",
87 "Generate enum values for instructions"),
88 clEnumValN(GenInstrs, "gen-instr-desc",
89 "Generate instruction descriptions"),
90 clEnumValN(GenCallingConv, "gen-callingconv",
91 "Generate calling convention descriptions"),
92 clEnumValN(GenAsmWriter, "gen-asm-writer",
93 "Generate assembly writer"),
94 clEnumValN(GenARMDecoder, "gen-arm-decoder",
95 "Generate decoders for ARM/Thumb"),
96 clEnumValN(GenDisassembler, "gen-disassembler",
97 "Generate disassembler"),
98 clEnumValN(GenAsmMatcher, "gen-asm-matcher",
99 "Generate assembly instruction matcher"),
100 clEnumValN(GenDAGISel, "gen-dag-isel",
101 "Generate a DAG instruction selector"),
102 clEnumValN(GenFastISel, "gen-fast-isel",
103 "Generate a \"fast\" instruction selector"),
104 clEnumValN(GenOptParserDefs, "gen-opt-parser-defs",
105 "Generate option definitions"),
106 clEnumValN(GenOptParserImpl, "gen-opt-parser-impl",
107 "Generate option parser implementation"),
108 clEnumValN(GenSubtarget, "gen-subtarget",
109 "Generate subtarget enumerations"),
110 clEnumValN(GenIntrinsic, "gen-intrinsic",
111 "Generate intrinsic information"),
112 clEnumValN(GenTgtIntrinsic, "gen-tgt-intrinsic",
113 "Generate target intrinsic information"),
114 clEnumValN(GenClangDiagsDefs, "gen-clang-diags-defs",
115 "Generate Clang diagnostics definitions"),
116 clEnumValN(GenClangDiagGroups, "gen-clang-diag-groups",
117 "Generate Clang diagnostic groups"),
118 clEnumValN(GenClangDeclNodes, "gen-clang-decl-nodes",
119 "Generate Clang AST statement nodes"),
120 clEnumValN(GenClangStmtNodes, "gen-clang-stmt-nodes",
121 "Generate Clang AST statement nodes"),
122 clEnumValN(GenLLVMCConf, "gen-llvmc",
123 "Generate LLVMC configuration library"),
124 clEnumValN(GenEDHeader, "gen-enhanced-disassembly-header",
125 "Generate enhanced disassembly info header"),
126 clEnumValN(GenEDInfo, "gen-enhanced-disassembly-info",
127 "Generate enhanced disassembly info"),
128 clEnumValN(GenNeonHeader, "gen-arm-neon-header",
129 "Generate arm_neon.h for clang"),
130 clEnumValN(GenNeonBuiltinsDef, "gen-arm-neon-builtins-def",
131 "Generate NEON BuiltinsARM.def for clang"),
132 clEnumValN(PrintEnums, "print-enums",
133 "Print enum values for a class"),
137 Class("class", cl::desc("Print Enum list for this class"),
138 cl::value_desc("class name"));
141 OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename"),
145 InputFilename(cl::Positional, cl::desc("<input file>"), cl::init("-"));
147 cl::list<std::string>
148 IncludeDirs("I", cl::desc("Directory of include files"),
149 cl::value_desc("directory"), cl::Prefix);
152 ClangComponent("clang-component",
153 cl::desc("Only use warnings from specified component"),
154 cl::value_desc("component"), cl::Hidden);
158 // FIXME: Eliminate globals from tblgen.
159 RecordKeeper llvm::Records;
161 static SourceMgr SrcMgr;
163 void llvm::PrintError(SMLoc ErrorLoc, const std::string &Msg) {
164 SrcMgr.PrintMessage(ErrorLoc, Msg, "error");
169 /// ParseFile - this function begins the parsing of the specified tablegen
171 static bool ParseFile(const std::string &Filename,
172 const std::vector<std::string> &IncludeDirs,
174 std::string ErrorStr;
175 MemoryBuffer *F = MemoryBuffer::getFileOrSTDIN(Filename.c_str(), &ErrorStr);
177 errs() << "Could not open input file '" << Filename << "': "
182 // Tell SrcMgr about this buffer, which is what TGParser will pick up.
183 SrcMgr.AddNewSourceBuffer(F, SMLoc());
185 // Record the location of the include directory so that the lexer can find
187 SrcMgr.setIncludeDirs(IncludeDirs);
189 TGParser Parser(SrcMgr);
191 return Parser.ParseFile();
194 int main(int argc, char **argv) {
195 sys::PrintStackTraceOnErrorSignal();
196 PrettyStackTraceProgram X(argc, argv);
197 cl::ParseCommandLineOptions(argc, argv);
200 // Parse the input file.
201 if (ParseFile(InputFilename, IncludeDirs, SrcMgr))
205 raw_fd_ostream Out(OutputFilename.c_str(), Error);
206 if (!Error.empty()) {
207 errs() << argv[0] << ": error opening " << OutputFilename
208 << ":" << Error << "\n";
212 // Make sure the file gets removed if *gasp* tablegen crashes...
213 sys::RemoveFileOnSignal(sys::Path(OutputFilename));
218 Out << Records; // No argument, dump all contents
221 CodeEmitterGen(Records).run(Out);
224 case GenRegisterEnums:
225 RegisterInfoEmitter(Records).runEnums(Out);
228 RegisterInfoEmitter(Records).run(Out);
230 case GenRegisterHeader:
231 RegisterInfoEmitter(Records).runHeader(Out);
234 InstrEnumEmitter(Records).run(Out);
237 InstrInfoEmitter(Records).run(Out);
240 CallingConvEmitter(Records).run(Out);
243 AsmWriterEmitter(Records).run(Out);
246 ARMDecoderEmitter(Records).run(Out);
249 AsmMatcherEmitter(Records).run(Out);
251 case GenClangDiagsDefs:
252 ClangDiagsDefsEmitter(Records, ClangComponent).run(Out);
254 case GenClangDiagGroups:
255 ClangDiagGroupsEmitter(Records).run(Out);
257 case GenClangDeclNodes:
258 ClangASTNodesEmitter(Records, "Decl", "Decl").run(Out);
259 ClangDeclContextEmitter(Records).run(Out);
261 case GenClangStmtNodes:
262 ClangASTNodesEmitter(Records, "Stmt", "").run(Out);
264 case GenDisassembler:
265 DisassemblerEmitter(Records).run(Out);
267 case GenOptParserDefs:
268 OptParserEmitter(Records, true).run(Out);
270 case GenOptParserImpl:
271 OptParserEmitter(Records, false).run(Out);
274 DAGISelEmitter(Records).run(Out);
277 FastISelEmitter(Records).run(Out);
280 SubtargetEmitter(Records).run(Out);
283 IntrinsicEmitter(Records).run(Out);
285 case GenTgtIntrinsic:
286 IntrinsicEmitter(Records, true).run(Out);
289 LLVMCConfigurationEmitter(Records).run(Out);
292 EDEmitter(Records).runHeader(Out);
295 EDEmitter(Records).run(Out);
298 NeonEmitter(Records).run(Out);
300 case GenNeonBuiltinsDef:
301 NeonEmitter(Records).runHeader(Out);
305 std::vector<Record*> Recs = Records.getAllDerivedDefinitions(Class);
306 for (unsigned i = 0, e = Recs.size(); i != e; ++i)
307 Out << Recs[i]->getName() << ", ";
312 assert(1 && "Invalid Action");
318 } catch (const TGError &Error) {
319 errs() << argv[0] << ": error:\n";
320 PrintError(Error.getLoc(), Error.getMessage());
322 } catch (const std::string &Error) {
323 errs() << argv[0] << ": " << Error << "\n";
324 } catch (const char *Error) {
325 errs() << argv[0] << ": " << Error << "\n";
327 errs() << argv[0] << ": Unknown unexpected exception occurred.\n";
330 if (OutputFilename != "-")
331 std::remove(OutputFilename.c_str()); // Remove the file, it's broken