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 "ClangAttrEmitter.h"
23 #include "ClangDiagnosticsEmitter.h"
24 #include "CodeEmitterGen.h"
25 #include "DAGISelEmitter.h"
26 #include "DisassemblerEmitter.h"
27 #include "EDEmitter.h"
28 #include "FastISelEmitter.h"
29 #include "InstrEnumEmitter.h"
30 #include "InstrInfoEmitter.h"
31 #include "IntrinsicEmitter.h"
32 #include "LLVMCConfigurationEmitter.h"
33 #include "NeonEmitter.h"
34 #include "OptParserEmitter.h"
36 #include "RegisterInfoEmitter.h"
37 #include "ARMDecoderEmitter.h"
38 #include "SubtargetEmitter.h"
40 #include "llvm/Support/CommandLine.h"
41 #include "llvm/Support/MemoryBuffer.h"
42 #include "llvm/Support/PrettyStackTrace.h"
43 #include "llvm/Support/raw_ostream.h"
44 #include "llvm/System/Signals.h"
52 GenRegisterEnums, GenRegister, GenRegisterHeader,
53 GenInstrEnums, GenInstrs, GenAsmWriter, GenAsmMatcher,
65 GenOptParserDefs, GenOptParserImpl,
78 Action(cl::desc("Action to perform:"),
79 cl::values(clEnumValN(PrintRecords, "print-records",
80 "Print all records to stdout (default)"),
81 clEnumValN(GenEmitter, "gen-emitter",
82 "Generate machine code emitter"),
83 clEnumValN(GenRegisterEnums, "gen-register-enums",
84 "Generate enum values for registers"),
85 clEnumValN(GenRegister, "gen-register-desc",
86 "Generate a register info description"),
87 clEnumValN(GenRegisterHeader, "gen-register-desc-header",
88 "Generate a register info description header"),
89 clEnumValN(GenInstrEnums, "gen-instr-enums",
90 "Generate enum values for instructions"),
91 clEnumValN(GenInstrs, "gen-instr-desc",
92 "Generate instruction descriptions"),
93 clEnumValN(GenCallingConv, "gen-callingconv",
94 "Generate calling convention descriptions"),
95 clEnumValN(GenAsmWriter, "gen-asm-writer",
96 "Generate assembly writer"),
97 clEnumValN(GenARMDecoder, "gen-arm-decoder",
98 "Generate decoders for ARM/Thumb"),
99 clEnumValN(GenDisassembler, "gen-disassembler",
100 "Generate disassembler"),
101 clEnumValN(GenAsmMatcher, "gen-asm-matcher",
102 "Generate assembly instruction matcher"),
103 clEnumValN(GenDAGISel, "gen-dag-isel",
104 "Generate a DAG instruction selector"),
105 clEnumValN(GenFastISel, "gen-fast-isel",
106 "Generate a \"fast\" instruction selector"),
107 clEnumValN(GenOptParserDefs, "gen-opt-parser-defs",
108 "Generate option definitions"),
109 clEnumValN(GenOptParserImpl, "gen-opt-parser-impl",
110 "Generate option parser implementation"),
111 clEnumValN(GenSubtarget, "gen-subtarget",
112 "Generate subtarget enumerations"),
113 clEnumValN(GenIntrinsic, "gen-intrinsic",
114 "Generate intrinsic information"),
115 clEnumValN(GenTgtIntrinsic, "gen-tgt-intrinsic",
116 "Generate target intrinsic information"),
117 clEnumValN(GenClangAttrClasses, "gen-clang-attr-classes",
118 "Generate clang attribute clases"),
119 clEnumValN(GenClangAttrList, "gen-clang-attr-list",
120 "Generate a clang attribute list"),
121 clEnumValN(GenClangDiagsDefs, "gen-clang-diags-defs",
122 "Generate Clang diagnostics definitions"),
123 clEnumValN(GenClangDiagGroups, "gen-clang-diag-groups",
124 "Generate Clang diagnostic groups"),
125 clEnumValN(GenClangDeclNodes, "gen-clang-decl-nodes",
126 "Generate Clang AST statement nodes"),
127 clEnumValN(GenClangStmtNodes, "gen-clang-stmt-nodes",
128 "Generate Clang AST statement nodes"),
129 clEnumValN(GenLLVMCConf, "gen-llvmc",
130 "Generate LLVMC configuration library"),
131 clEnumValN(GenEDInfo, "gen-enhanced-disassembly-info",
132 "Generate enhanced disassembly info"),
133 clEnumValN(GenArmNeon, "gen-arm-neon",
134 "Generate arm_neon.h for clang"),
135 clEnumValN(GenArmNeonSema, "gen-arm-neon-sema",
136 "Generate ARM NEON sema support for clang"),
137 clEnumValN(PrintEnums, "print-enums",
138 "Print enum values for a class"),
142 Class("class", cl::desc("Print Enum list for this class"),
143 cl::value_desc("class name"));
146 OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename"),
149 cl::list<std::string>
150 IncludeDirs("I", cl::desc("Directory of include files"),
151 cl::value_desc("directory"), cl::Prefix);
154 ClangComponent("clang-component",
155 cl::desc("Only use warnings from specified component"),
156 cl::value_desc("component"), cl::Hidden);
160 // FIXME: Eliminate globals from tblgen.
162 InputFilename(cl::Positional, cl::desc("<input file>"), cl::init("-"));
164 RecordKeeper llvm::Records;
166 static SourceMgr SrcMgr;
168 void llvm::PrintError(SMLoc ErrorLoc, const std::string &Msg) {
169 SrcMgr.PrintMessage(ErrorLoc, Msg, "error");
174 /// ParseFile - this function begins the parsing of the specified tablegen
176 static bool ParseFile(const std::string &Filename,
177 const std::vector<std::string> &IncludeDirs,
179 std::string ErrorStr;
180 MemoryBuffer *F = MemoryBuffer::getFileOrSTDIN(Filename.c_str(), &ErrorStr);
182 errs() << "Could not open input file '" << Filename << "': "
187 // Tell SrcMgr about this buffer, which is what TGParser will pick up.
188 SrcMgr.AddNewSourceBuffer(F, SMLoc());
190 // Record the location of the include directory so that the lexer can find
192 SrcMgr.setIncludeDirs(IncludeDirs);
194 TGParser Parser(SrcMgr);
196 return Parser.ParseFile();
199 int main(int argc, char **argv) {
200 sys::PrintStackTraceOnErrorSignal();
201 PrettyStackTraceProgram X(argc, argv);
202 cl::ParseCommandLineOptions(argc, argv);
205 // Parse the input file.
206 if (ParseFile(InputFilename, IncludeDirs, SrcMgr))
210 raw_fd_ostream Out(OutputFilename.c_str(), Error);
211 if (!Error.empty()) {
212 errs() << argv[0] << ": error opening " << OutputFilename
213 << ":" << Error << "\n";
217 // Make sure the file gets removed if *gasp* tablegen crashes...
218 sys::RemoveFileOnSignal(sys::Path(OutputFilename));
223 Out << Records; // No argument, dump all contents
226 CodeEmitterGen(Records).run(Out);
229 case GenRegisterEnums:
230 RegisterInfoEmitter(Records).runEnums(Out);
233 RegisterInfoEmitter(Records).run(Out);
235 case GenRegisterHeader:
236 RegisterInfoEmitter(Records).runHeader(Out);
239 InstrEnumEmitter(Records).run(Out);
242 InstrInfoEmitter(Records).run(Out);
245 CallingConvEmitter(Records).run(Out);
248 AsmWriterEmitter(Records).run(Out);
251 ARMDecoderEmitter(Records).run(Out);
254 AsmMatcherEmitter(Records).run(Out);
256 case GenClangAttrClasses:
257 ClangAttrClassEmitter(Records).run(Out);
259 case GenClangAttrList:
260 ClangAttrListEmitter(Records).run(Out);
262 case GenClangDiagsDefs:
263 ClangDiagsDefsEmitter(Records, ClangComponent).run(Out);
265 case GenClangDiagGroups:
266 ClangDiagGroupsEmitter(Records).run(Out);
268 case GenClangDeclNodes:
269 ClangASTNodesEmitter(Records, "Decl", "Decl").run(Out);
270 ClangDeclContextEmitter(Records).run(Out);
272 case GenClangStmtNodes:
273 ClangASTNodesEmitter(Records, "Stmt", "").run(Out);
275 case GenDisassembler:
276 DisassemblerEmitter(Records).run(Out);
278 case GenOptParserDefs:
279 OptParserEmitter(Records, true).run(Out);
281 case GenOptParserImpl:
282 OptParserEmitter(Records, false).run(Out);
285 DAGISelEmitter(Records).run(Out);
288 FastISelEmitter(Records).run(Out);
291 SubtargetEmitter(Records).run(Out);
294 IntrinsicEmitter(Records).run(Out);
296 case GenTgtIntrinsic:
297 IntrinsicEmitter(Records, true).run(Out);
300 LLVMCConfigurationEmitter(Records).run(Out);
303 EDEmitter(Records).run(Out);
306 NeonEmitter(Records).run(Out);
309 NeonEmitter(Records).runHeader(Out);
313 std::vector<Record*> Recs = Records.getAllDerivedDefinitions(Class);
314 for (unsigned i = 0, e = Recs.size(); i != e; ++i)
315 Out << Recs[i]->getName() << ", ";
320 assert(1 && "Invalid Action");
326 } catch (const TGError &Error) {
327 errs() << argv[0] << ": error:\n";
328 PrintError(Error.getLoc(), Error.getMessage());
330 } catch (const std::string &Error) {
331 errs() << argv[0] << ": " << Error << "\n";
332 } catch (const char *Error) {
333 errs() << argv[0] << ": " << Error << "\n";
335 errs() << argv[0] << ": Unknown unexpected exception occurred.\n";
338 if (OutputFilename != "-")
339 std::remove(OutputFilename.c_str()); // Remove the file, it's broken