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