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 //===----------------------------------------------------------------------===//
20 #include "CallingConvEmitter.h"
21 #include "CodeEmitterGen.h"
22 #include "RegisterInfoEmitter.h"
23 #include "InstrInfoEmitter.h"
24 #include "InstrEnumEmitter.h"
25 #include "AsmWriterEmitter.h"
26 #include "AsmMatcherEmitter.h"
27 #include "DAGISelEmitter.h"
28 #include "FastISelEmitter.h"
29 #include "SubtargetEmitter.h"
30 #include "IntrinsicEmitter.h"
31 #include "LLVMCConfigurationEmitter.h"
32 #include "ClangDiagnosticsEmitter.h"
33 #include "llvm/Support/CommandLine.h"
34 #include "llvm/Support/FileUtilities.h"
35 #include "llvm/Support/MemoryBuffer.h"
36 #include "llvm/Support/PrettyStackTrace.h"
37 #include "llvm/Support/raw_ostream.h"
38 #include "llvm/System/Signals.h"
46 GenRegisterEnums, GenRegister, GenRegisterHeader,
47 GenInstrEnums, GenInstrs, GenAsmWriter, GenAsmMatcher,
62 Action(cl::desc("Action to perform:"),
63 cl::values(clEnumValN(PrintRecords, "print-records",
64 "Print all records to stdout (default)"),
65 clEnumValN(GenEmitter, "gen-emitter",
66 "Generate machine code emitter"),
67 clEnumValN(GenRegisterEnums, "gen-register-enums",
68 "Generate enum values for registers"),
69 clEnumValN(GenRegister, "gen-register-desc",
70 "Generate a register info description"),
71 clEnumValN(GenRegisterHeader, "gen-register-desc-header",
72 "Generate a register info description header"),
73 clEnumValN(GenInstrEnums, "gen-instr-enums",
74 "Generate enum values for instructions"),
75 clEnumValN(GenInstrs, "gen-instr-desc",
76 "Generate instruction descriptions"),
77 clEnumValN(GenCallingConv, "gen-callingconv",
78 "Generate calling convention descriptions"),
79 clEnumValN(GenAsmWriter, "gen-asm-writer",
80 "Generate assembly writer"),
81 clEnumValN(GenAsmMatcher, "gen-asm-matcher",
82 "Generate assembly instruction matcher"),
83 clEnumValN(GenDAGISel, "gen-dag-isel",
84 "Generate a DAG instruction selector"),
85 clEnumValN(GenFastISel, "gen-fast-isel",
86 "Generate a \"fast\" instruction selector"),
87 clEnumValN(GenSubtarget, "gen-subtarget",
88 "Generate subtarget enumerations"),
89 clEnumValN(GenIntrinsic, "gen-intrinsic",
90 "Generate intrinsic information"),
91 clEnumValN(GenTgtIntrinsic, "gen-tgt-intrinsic",
92 "Generate target intrinsic information"),
93 clEnumValN(GenClangDiagsDefs, "gen-clang-diags-defs",
94 "Generate Clang diagnostics definitions"),
95 clEnumValN(GenClangDiagGroups, "gen-clang-diag-groups",
96 "Generate Clang diagnostic groups"),
97 clEnumValN(GenLLVMCConf, "gen-llvmc",
98 "Generate LLVMC configuration library"),
99 clEnumValN(PrintEnums, "print-enums",
100 "Print enum values for a class"),
104 Class("class", cl::desc("Print Enum list for this class"),
105 cl::value_desc("class name"));
108 OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename"),
112 InputFilename(cl::Positional, cl::desc("<input file>"), cl::init("-"));
114 cl::list<std::string>
115 IncludeDirs("I", cl::desc("Directory of include files"),
116 cl::value_desc("directory"), cl::Prefix);
119 ClangComponent("clang-component",
120 cl::desc("Only use warnings from specified component"),
121 cl::value_desc("component"), cl::Hidden);
125 // FIXME: Eliminate globals from tblgen.
126 RecordKeeper llvm::Records;
128 static SourceMgr SrcMgr;
130 void llvm::PrintError(SMLoc ErrorLoc, const std::string &Msg) {
131 SrcMgr.PrintMessage(ErrorLoc, Msg, "error");
136 /// ParseFile - this function begins the parsing of the specified tablegen
138 static bool ParseFile(const std::string &Filename,
139 const std::vector<std::string> &IncludeDirs,
141 std::string ErrorStr;
142 MemoryBuffer *F = MemoryBuffer::getFileOrSTDIN(Filename.c_str(), &ErrorStr);
144 errs() << "Could not open input file '" << Filename << "': "
149 // Tell SrcMgr about this buffer, which is what TGParser will pick up.
150 SrcMgr.AddNewSourceBuffer(F, SMLoc());
152 // Record the location of the include directory so that the lexer can find
154 SrcMgr.setIncludeDirs(IncludeDirs);
156 TGParser Parser(SrcMgr);
158 return Parser.ParseFile();
161 int main(int argc, char **argv) {
162 sys::PrintStackTraceOnErrorSignal();
163 PrettyStackTraceProgram X(argc, argv);
164 cl::ParseCommandLineOptions(argc, argv);
167 // Parse the input file.
168 if (ParseFile(InputFilename, IncludeDirs, SrcMgr))
171 raw_ostream *Out = &outs();
172 if (OutputFilename != "-") {
174 Out = new raw_fd_ostream(OutputFilename.c_str(), Error,
175 raw_fd_ostream::F_Force);
177 if (!Error.empty()) {
178 errs() << argv[0] << ": error opening " << OutputFilename
179 << ":" << Error << "\n";
183 // Make sure the file gets removed if *gasp* tablegen crashes...
184 sys::RemoveFileOnSignal(sys::Path(OutputFilename));
190 *Out << Records; // No argument, dump all contents
193 CodeEmitterGen(Records).run(*Out);
196 case GenRegisterEnums:
197 RegisterInfoEmitter(Records).runEnums(*Out);
200 RegisterInfoEmitter(Records).run(*Out);
202 case GenRegisterHeader:
203 RegisterInfoEmitter(Records).runHeader(*Out);
206 InstrEnumEmitter(Records).run(*Out);
209 InstrInfoEmitter(Records).run(*Out);
212 CallingConvEmitter(Records).run(*Out);
215 AsmWriterEmitter(Records).run(*Out);
218 AsmMatcherEmitter(Records).run(*Out);
220 case GenClangDiagsDefs:
221 ClangDiagsDefsEmitter(Records, ClangComponent).run(*Out);
223 case GenClangDiagGroups:
224 ClangDiagGroupsEmitter(Records).run(*Out);
227 DAGISelEmitter(Records).run(*Out);
230 FastISelEmitter(Records).run(*Out);
233 SubtargetEmitter(Records).run(*Out);
236 IntrinsicEmitter(Records).run(*Out);
238 case GenTgtIntrinsic:
239 IntrinsicEmitter(Records, true).run(*Out);
242 LLVMCConfigurationEmitter(Records).run(*Out);
246 std::vector<Record*> Recs = Records.getAllDerivedDefinitions(Class);
247 for (unsigned i = 0, e = Recs.size(); i != e; ++i)
248 *Out << Recs[i]->getName() << ", ";
253 assert(1 && "Invalid Action");
258 delete Out; // Close the file
261 } catch (const TGError &Error) {
262 errs() << argv[0] << ": error:\n";
263 PrintError(Error.getLoc(), Error.getMessage());
265 } catch (const std::string &Error) {
266 errs() << argv[0] << ": " << Error << "\n";
267 } catch (const char *Error) {
268 errs() << argv[0] << ": " << Error << "\n";
270 errs() << argv[0] << ": Unknown unexpected exception occurred.\n";
273 if (Out != &outs()) {
274 delete Out; // Close the file
275 std::remove(OutputFilename.c_str()); // Remove the file, it's broken