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 "DisassemblerEmitter.h"
25 #include "EDEmitter.h"
26 #include "FastISelEmitter.h"
27 #include "InstrEnumEmitter.h"
28 #include "InstrInfoEmitter.h"
29 #include "IntrinsicEmitter.h"
30 #include "LLVMCConfigurationEmitter.h"
31 #include "OptParserEmitter.h"
33 #include "RegisterInfoEmitter.h"
34 #include "ARMDecoderEmitter.h"
35 #include "SubtargetEmitter.h"
37 #include "llvm/Support/CommandLine.h"
38 #include "llvm/Support/MemoryBuffer.h"
39 #include "llvm/Support/PrettyStackTrace.h"
40 #include "llvm/Support/raw_ostream.h"
41 #include "llvm/System/Signals.h"
49 GenRegisterEnums, GenRegister, GenRegisterHeader,
50 GenInstrEnums, GenInstrs, GenAsmWriter, GenAsmMatcher,
58 GenOptParserDefs, GenOptParserImpl,
63 GenEDHeader, GenEDInfo,
69 Action(cl::desc("Action to perform:"),
70 cl::values(clEnumValN(PrintRecords, "print-records",
71 "Print all records to stdout (default)"),
72 clEnumValN(GenEmitter, "gen-emitter",
73 "Generate machine code emitter"),
74 clEnumValN(GenRegisterEnums, "gen-register-enums",
75 "Generate enum values for registers"),
76 clEnumValN(GenRegister, "gen-register-desc",
77 "Generate a register info description"),
78 clEnumValN(GenRegisterHeader, "gen-register-desc-header",
79 "Generate a register info description header"),
80 clEnumValN(GenInstrEnums, "gen-instr-enums",
81 "Generate enum values for instructions"),
82 clEnumValN(GenInstrs, "gen-instr-desc",
83 "Generate instruction descriptions"),
84 clEnumValN(GenCallingConv, "gen-callingconv",
85 "Generate calling convention descriptions"),
86 clEnumValN(GenAsmWriter, "gen-asm-writer",
87 "Generate assembly writer"),
88 clEnumValN(GenARMDecoder, "gen-arm-decoder",
89 "Generate decoders for ARM/Thumb"),
90 clEnumValN(GenDisassembler, "gen-disassembler",
91 "Generate disassembler"),
92 clEnumValN(GenAsmMatcher, "gen-asm-matcher",
93 "Generate assembly instruction matcher"),
94 clEnumValN(GenDAGISel, "gen-dag-isel",
95 "Generate a DAG instruction selector"),
96 clEnumValN(GenFastISel, "gen-fast-isel",
97 "Generate a \"fast\" instruction selector"),
98 clEnumValN(GenOptParserDefs, "gen-opt-parser-defs",
99 "Generate option definitions"),
100 clEnumValN(GenOptParserImpl, "gen-opt-parser-impl",
101 "Generate option parser implementation"),
102 clEnumValN(GenSubtarget, "gen-subtarget",
103 "Generate subtarget enumerations"),
104 clEnumValN(GenIntrinsic, "gen-intrinsic",
105 "Generate intrinsic information"),
106 clEnumValN(GenTgtIntrinsic, "gen-tgt-intrinsic",
107 "Generate target intrinsic information"),
108 clEnumValN(GenClangDiagsDefs, "gen-clang-diags-defs",
109 "Generate Clang diagnostics definitions"),
110 clEnumValN(GenClangDiagGroups, "gen-clang-diag-groups",
111 "Generate Clang diagnostic groups"),
112 clEnumValN(GenLLVMCConf, "gen-llvmc",
113 "Generate LLVMC configuration library"),
114 clEnumValN(GenEDHeader, "gen-enhanced-disassembly-header",
115 "Generate enhanced disassembly info header"),
116 clEnumValN(GenEDInfo, "gen-enhanced-disassembly-info",
117 "Generate enhanced disassembly info"),
118 clEnumValN(PrintEnums, "print-enums",
119 "Print enum values for a class"),
123 Class("class", cl::desc("Print Enum list for this class"),
124 cl::value_desc("class name"));
127 OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename"),
131 InputFilename(cl::Positional, cl::desc("<input file>"), cl::init("-"));
133 cl::list<std::string>
134 IncludeDirs("I", cl::desc("Directory of include files"),
135 cl::value_desc("directory"), cl::Prefix);
138 ClangComponent("clang-component",
139 cl::desc("Only use warnings from specified component"),
140 cl::value_desc("component"), cl::Hidden);
144 // FIXME: Eliminate globals from tblgen.
145 RecordKeeper llvm::Records;
147 static SourceMgr SrcMgr;
149 void llvm::PrintError(SMLoc ErrorLoc, const std::string &Msg) {
150 SrcMgr.PrintMessage(ErrorLoc, Msg, "error");
155 /// ParseFile - this function begins the parsing of the specified tablegen
157 static bool ParseFile(const std::string &Filename,
158 const std::vector<std::string> &IncludeDirs,
160 std::string ErrorStr;
161 MemoryBuffer *F = MemoryBuffer::getFileOrSTDIN(Filename.c_str(), &ErrorStr);
163 errs() << "Could not open input file '" << Filename << "': "
168 // Tell SrcMgr about this buffer, which is what TGParser will pick up.
169 SrcMgr.AddNewSourceBuffer(F, SMLoc());
171 // Record the location of the include directory so that the lexer can find
173 SrcMgr.setIncludeDirs(IncludeDirs);
175 TGParser Parser(SrcMgr);
177 return Parser.ParseFile();
180 int main(int argc, char **argv) {
181 sys::PrintStackTraceOnErrorSignal();
182 PrettyStackTraceProgram X(argc, argv);
183 cl::ParseCommandLineOptions(argc, argv);
186 // Parse the input file.
187 if (ParseFile(InputFilename, IncludeDirs, SrcMgr))
190 raw_ostream *Out = &outs();
191 if (OutputFilename != "-") {
193 Out = new raw_fd_ostream(OutputFilename.c_str(), Error);
195 if (!Error.empty()) {
196 errs() << argv[0] << ": error opening " << OutputFilename
197 << ":" << Error << "\n";
201 // Make sure the file gets removed if *gasp* tablegen crashes...
202 sys::RemoveFileOnSignal(sys::Path(OutputFilename));
208 *Out << Records; // No argument, dump all contents
211 CodeEmitterGen(Records).run(*Out);
214 case GenRegisterEnums:
215 RegisterInfoEmitter(Records).runEnums(*Out);
218 RegisterInfoEmitter(Records).run(*Out);
220 case GenRegisterHeader:
221 RegisterInfoEmitter(Records).runHeader(*Out);
224 InstrEnumEmitter(Records).run(*Out);
227 InstrInfoEmitter(Records).run(*Out);
230 CallingConvEmitter(Records).run(*Out);
233 AsmWriterEmitter(Records).run(*Out);
236 ARMDecoderEmitter(Records).run(*Out);
239 AsmMatcherEmitter(Records).run(*Out);
241 case GenClangDiagsDefs:
242 ClangDiagsDefsEmitter(Records, ClangComponent).run(*Out);
244 case GenClangDiagGroups:
245 ClangDiagGroupsEmitter(Records).run(*Out);
247 case GenDisassembler:
248 DisassemblerEmitter(Records).run(*Out);
250 case GenOptParserDefs:
251 OptParserEmitter(Records, true).run(*Out);
253 case GenOptParserImpl:
254 OptParserEmitter(Records, false).run(*Out);
257 DAGISelEmitter(Records).run(*Out);
260 FastISelEmitter(Records).run(*Out);
263 SubtargetEmitter(Records).run(*Out);
266 IntrinsicEmitter(Records).run(*Out);
268 case GenTgtIntrinsic:
269 IntrinsicEmitter(Records, true).run(*Out);
272 LLVMCConfigurationEmitter(Records).run(*Out);
275 EDEmitter(Records).runHeader(*Out);
278 EDEmitter(Records).run(*Out);
282 std::vector<Record*> Recs = Records.getAllDerivedDefinitions(Class);
283 for (unsigned i = 0, e = Recs.size(); i != e; ++i)
284 *Out << Recs[i]->getName() << ", ";
289 assert(1 && "Invalid Action");
294 delete Out; // Close the file
297 } catch (const TGError &Error) {
298 errs() << argv[0] << ": error:\n";
299 PrintError(Error.getLoc(), Error.getMessage());
301 } catch (const std::string &Error) {
302 errs() << argv[0] << ": " << Error << "\n";
303 } catch (const char *Error) {
304 errs() << argv[0] << ": " << Error << "\n";
306 errs() << argv[0] << ": Unknown unexpected exception occurred.\n";
309 if (Out != &outs()) {
310 delete Out; // Close the file
311 std::remove(OutputFilename.c_str()); // Remove the file, it's broken