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