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 "SubtargetEmitter.h"
36 #include "llvm/Support/CommandLine.h"
37 #include "llvm/Support/MemoryBuffer.h"
38 #include "llvm/Support/PrettyStackTrace.h"
39 #include "llvm/Support/raw_ostream.h"
40 #include "llvm/System/Signals.h"
48 GenRegisterEnums, GenRegister, GenRegisterHeader,
49 GenInstrEnums, GenInstrs, GenAsmWriter, GenAsmMatcher,
56 GenOptParserDefs, GenOptParserImpl,
61 GenEDHeader, GenEDInfo,
67 Action(cl::desc("Action to perform:"),
68 cl::values(clEnumValN(PrintRecords, "print-records",
69 "Print all records to stdout (default)"),
70 clEnumValN(GenEmitter, "gen-emitter",
71 "Generate machine code emitter"),
72 clEnumValN(GenRegisterEnums, "gen-register-enums",
73 "Generate enum values for registers"),
74 clEnumValN(GenRegister, "gen-register-desc",
75 "Generate a register info description"),
76 clEnumValN(GenRegisterHeader, "gen-register-desc-header",
77 "Generate a register info description header"),
78 clEnumValN(GenInstrEnums, "gen-instr-enums",
79 "Generate enum values for instructions"),
80 clEnumValN(GenInstrs, "gen-instr-desc",
81 "Generate instruction descriptions"),
82 clEnumValN(GenCallingConv, "gen-callingconv",
83 "Generate calling convention descriptions"),
84 clEnumValN(GenAsmWriter, "gen-asm-writer",
85 "Generate assembly writer"),
86 clEnumValN(GenDisassembler, "gen-disassembler",
87 "Generate disassembler"),
88 clEnumValN(GenAsmMatcher, "gen-asm-matcher",
89 "Generate assembly instruction matcher"),
90 clEnumValN(GenDAGISel, "gen-dag-isel",
91 "Generate a DAG instruction selector"),
92 clEnumValN(GenFastISel, "gen-fast-isel",
93 "Generate a \"fast\" instruction selector"),
94 clEnumValN(GenOptParserDefs, "gen-opt-parser-defs",
95 "Generate option definitions"),
96 clEnumValN(GenOptParserImpl, "gen-opt-parser-impl",
97 "Generate option parser implementation"),
98 clEnumValN(GenSubtarget, "gen-subtarget",
99 "Generate subtarget enumerations"),
100 clEnumValN(GenIntrinsic, "gen-intrinsic",
101 "Generate intrinsic information"),
102 clEnumValN(GenTgtIntrinsic, "gen-tgt-intrinsic",
103 "Generate target intrinsic information"),
104 clEnumValN(GenClangDiagsDefs, "gen-clang-diags-defs",
105 "Generate Clang diagnostics definitions"),
106 clEnumValN(GenClangDiagGroups, "gen-clang-diag-groups",
107 "Generate Clang diagnostic groups"),
108 clEnumValN(GenLLVMCConf, "gen-llvmc",
109 "Generate LLVMC configuration library"),
110 clEnumValN(GenEDHeader, "gen-enhanced-disassembly-header",
111 "Generate enhanced disassembly info header"),
112 clEnumValN(GenEDInfo, "gen-enhanced-disassembly-info",
113 "Generate enhanced disassembly info"),
114 clEnumValN(PrintEnums, "print-enums",
115 "Print enum values for a class"),
119 Class("class", cl::desc("Print Enum list for this class"),
120 cl::value_desc("class name"));
123 OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename"),
127 InputFilename(cl::Positional, cl::desc("<input file>"), cl::init("-"));
129 cl::list<std::string>
130 IncludeDirs("I", cl::desc("Directory of include files"),
131 cl::value_desc("directory"), cl::Prefix);
134 ClangComponent("clang-component",
135 cl::desc("Only use warnings from specified component"),
136 cl::value_desc("component"), cl::Hidden);
140 // FIXME: Eliminate globals from tblgen.
141 RecordKeeper llvm::Records;
143 static SourceMgr SrcMgr;
145 void llvm::PrintError(SMLoc ErrorLoc, const std::string &Msg) {
146 SrcMgr.PrintMessage(ErrorLoc, Msg, "error");
151 /// ParseFile - this function begins the parsing of the specified tablegen
153 static bool ParseFile(const std::string &Filename,
154 const std::vector<std::string> &IncludeDirs,
156 std::string ErrorStr;
157 MemoryBuffer *F = MemoryBuffer::getFileOrSTDIN(Filename.c_str(), &ErrorStr);
159 errs() << "Could not open input file '" << Filename << "': "
164 // Tell SrcMgr about this buffer, which is what TGParser will pick up.
165 SrcMgr.AddNewSourceBuffer(F, SMLoc());
167 // Record the location of the include directory so that the lexer can find
169 SrcMgr.setIncludeDirs(IncludeDirs);
171 TGParser Parser(SrcMgr);
173 return Parser.ParseFile();
176 int main(int argc, char **argv) {
177 sys::PrintStackTraceOnErrorSignal();
178 PrettyStackTraceProgram X(argc, argv);
179 cl::ParseCommandLineOptions(argc, argv);
182 // Parse the input file.
183 if (ParseFile(InputFilename, IncludeDirs, SrcMgr))
186 raw_ostream *Out = &outs();
187 if (OutputFilename != "-") {
189 Out = new raw_fd_ostream(OutputFilename.c_str(), Error);
191 if (!Error.empty()) {
192 errs() << argv[0] << ": error opening " << OutputFilename
193 << ":" << Error << "\n";
197 // Make sure the file gets removed if *gasp* tablegen crashes...
198 sys::RemoveFileOnSignal(sys::Path(OutputFilename));
204 *Out << Records; // No argument, dump all contents
207 CodeEmitterGen(Records).run(*Out);
210 case GenRegisterEnums:
211 RegisterInfoEmitter(Records).runEnums(*Out);
214 RegisterInfoEmitter(Records).run(*Out);
216 case GenRegisterHeader:
217 RegisterInfoEmitter(Records).runHeader(*Out);
220 InstrEnumEmitter(Records).run(*Out);
223 InstrInfoEmitter(Records).run(*Out);
226 CallingConvEmitter(Records).run(*Out);
229 AsmWriterEmitter(Records).run(*Out);
232 AsmMatcherEmitter(Records).run(*Out);
234 case GenClangDiagsDefs:
235 ClangDiagsDefsEmitter(Records, ClangComponent).run(*Out);
237 case GenClangDiagGroups:
238 ClangDiagGroupsEmitter(Records).run(*Out);
240 case GenDisassembler:
241 DisassemblerEmitter(Records).run(*Out);
243 case GenOptParserDefs:
244 OptParserEmitter(Records, true).run(*Out);
246 case GenOptParserImpl:
247 OptParserEmitter(Records, false).run(*Out);
250 DAGISelEmitter(Records).run(*Out);
253 FastISelEmitter(Records).run(*Out);
256 SubtargetEmitter(Records).run(*Out);
259 IntrinsicEmitter(Records).run(*Out);
261 case GenTgtIntrinsic:
262 IntrinsicEmitter(Records, true).run(*Out);
265 LLVMCConfigurationEmitter(Records).run(*Out);
268 EDEmitter(Records).runHeader(*Out);
271 EDEmitter(Records).run(*Out);
275 std::vector<Record*> Recs = Records.getAllDerivedDefinitions(Class);
276 for (unsigned i = 0, e = Recs.size(); i != e; ++i)
277 *Out << Recs[i]->getName() << ", ";
282 assert(1 && "Invalid Action");
287 delete Out; // Close the file
290 } catch (const TGError &Error) {
291 errs() << argv[0] << ": error:\n";
292 PrintError(Error.getLoc(), Error.getMessage());
294 } catch (const std::string &Error) {
295 errs() << argv[0] << ": " << Error << "\n";
296 } catch (const char *Error) {
297 errs() << argv[0] << ": " << Error << "\n";
299 errs() << argv[0] << ": Unknown unexpected exception occurred.\n";
302 if (Out != &outs()) {
303 delete Out; // Close the file
304 std::remove(OutputFilename.c_str()); // Remove the file, it's broken