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 "llvm/Support/CommandLine.h"
21 #include "llvm/System/Signals.h"
22 #include "llvm/Support/FileUtilities.h"
23 #include "llvm/Support/MemoryBuffer.h"
24 #include "llvm/Support/PrettyStackTrace.h"
25 #include "llvm/Support/raw_ostream.h"
26 #include "CallingConvEmitter.h"
27 #include "CodeEmitterGen.h"
28 #include "RegisterInfoEmitter.h"
29 #include "InstrInfoEmitter.h"
30 #include "InstrEnumEmitter.h"
31 #include "AsmWriterEmitter.h"
32 #include "DAGISelEmitter.h"
33 #include "FastISelEmitter.h"
34 #include "SubtargetEmitter.h"
35 #include "IntrinsicEmitter.h"
36 #include "LLVMCConfigurationEmitter.h"
37 #include "ClangDiagnosticsEmitter.h"
45 GenRegisterEnums, GenRegister, GenRegisterHeader,
46 GenInstrEnums, GenInstrs, GenAsmWriter,
61 Action(cl::desc("Action to perform:"),
62 cl::values(clEnumValN(PrintRecords, "print-records",
63 "Print all records to stdout (default)"),
64 clEnumValN(GenEmitter, "gen-emitter",
65 "Generate machine code emitter"),
66 clEnumValN(GenRegisterEnums, "gen-register-enums",
67 "Generate enum values for registers"),
68 clEnumValN(GenRegister, "gen-register-desc",
69 "Generate a register info description"),
70 clEnumValN(GenRegisterHeader, "gen-register-desc-header",
71 "Generate a register info description header"),
72 clEnumValN(GenInstrEnums, "gen-instr-enums",
73 "Generate enum values for instructions"),
74 clEnumValN(GenInstrs, "gen-instr-desc",
75 "Generate instruction descriptions"),
76 clEnumValN(GenCallingConv, "gen-callingconv",
77 "Generate calling convention descriptions"),
78 clEnumValN(GenAsmWriter, "gen-asm-writer",
79 "Generate assembly writer"),
80 clEnumValN(GenDAGISel, "gen-dag-isel",
81 "Generate a DAG instruction selector"),
82 clEnumValN(GenFastISel, "gen-fast-isel",
83 "Generate a \"fast\" instruction selector"),
84 clEnumValN(GenSubtarget, "gen-subtarget",
85 "Generate subtarget enumerations"),
86 clEnumValN(GenIntrinsic, "gen-intrinsic",
87 "Generate intrinsic information"),
88 clEnumValN(GenTgtIntrinsic, "gen-tgt-intrinsic",
89 "Generate target intrinsic information"),
90 clEnumValN(GenClangDiagsDefs, "gen-clang-diags-defs",
91 "Generate Clang diagnostics definitions"),
92 clEnumValN(GenClangDiagGroups, "gen-clang-diag-groups",
93 "Generate Clang diagnostic groups"),
94 clEnumValN(GenLLVMCConf, "gen-llvmc",
95 "Generate LLVMC configuration library"),
96 clEnumValN(PrintEnums, "print-enums",
97 "Print enum values for a class"),
101 Class("class", cl::desc("Print Enum list for this class"),
102 cl::value_desc("class name"));
105 OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename"),
109 InputFilename(cl::Positional, cl::desc("<input file>"), cl::init("-"));
111 cl::list<std::string>
112 IncludeDirs("I", cl::desc("Directory of include files"),
113 cl::value_desc("directory"), cl::Prefix);
116 ClangComponent("clang-component",
117 cl::desc("Only use warnings from specified component"),
118 cl::value_desc("component"), cl::Hidden);
122 // FIXME: Eliminate globals from tblgen.
123 RecordKeeper llvm::Records;
125 static SourceMgr SrcMgr;
127 void llvm::PrintError(SMLoc ErrorLoc, const std::string &Msg) {
128 SrcMgr.PrintMessage(ErrorLoc, Msg, "error");
133 /// ParseFile - this function begins the parsing of the specified tablegen
135 static bool ParseFile(const std::string &Filename,
136 const std::vector<std::string> &IncludeDirs,
138 std::string ErrorStr;
139 MemoryBuffer *F = MemoryBuffer::getFileOrSTDIN(Filename.c_str(), &ErrorStr);
141 errs() << "Could not open input file '" + Filename + "': "
146 // Tell SrcMgr about this buffer, which is what TGParser will pick up.
147 SrcMgr.AddNewSourceBuffer(F, SMLoc());
149 // Record the location of the include directory so that the lexer can find
151 SrcMgr.setIncludeDirs(IncludeDirs);
153 TGParser Parser(SrcMgr);
155 return Parser.ParseFile();
158 int main(int argc, char **argv) {
159 sys::PrintStackTraceOnErrorSignal();
160 PrettyStackTraceProgram X(argc, argv);
161 cl::ParseCommandLineOptions(argc, argv);
164 // Parse the input file.
165 if (ParseFile(InputFilename, IncludeDirs, SrcMgr))
168 raw_ostream *Out = &outs();
169 if (OutputFilename != "-") {
171 Out = new raw_fd_ostream(OutputFilename.c_str(), false, Error);
173 if (!Error.empty()) {
174 errs() << argv[0] << ": error opening " << OutputFilename
175 << ":" << Error << "\n";
179 // Make sure the file gets removed if *gasp* tablegen crashes...
180 sys::RemoveFileOnSignal(sys::Path(OutputFilename));
186 *Out << Records; // No argument, dump all contents
189 CodeEmitterGen(Records).run(*Out);
192 case GenRegisterEnums:
193 RegisterInfoEmitter(Records).runEnums(*Out);
196 RegisterInfoEmitter(Records).run(*Out);
198 case GenRegisterHeader:
199 RegisterInfoEmitter(Records).runHeader(*Out);
202 InstrEnumEmitter(Records).run(*Out);
205 InstrInfoEmitter(Records).run(*Out);
208 CallingConvEmitter(Records).run(*Out);
211 AsmWriterEmitter(Records).run(*Out);
213 case GenClangDiagsDefs:
214 ClangDiagsDefsEmitter(Records, ClangComponent).run(*Out);
216 case GenClangDiagGroups:
217 ClangDiagGroupsEmitter(Records).run(*Out);
220 DAGISelEmitter(Records).run(*Out);
223 FastISelEmitter(Records).run(*Out);
226 SubtargetEmitter(Records).run(*Out);
229 IntrinsicEmitter(Records).run(*Out);
231 case GenTgtIntrinsic:
232 IntrinsicEmitter(Records, true).run(*Out);
235 LLVMCConfigurationEmitter(Records).run(*Out);
239 std::vector<Record*> Recs = Records.getAllDerivedDefinitions(Class);
240 for (unsigned i = 0, e = Recs.size(); i != e; ++i)
241 *Out << Recs[i]->getName() << ", ";
246 assert(1 && "Invalid Action");
251 delete Out; // Close the file
254 } catch (const TGError &Error) {
255 errs() << argv[0] << ": error:\n";
256 PrintError(Error.getLoc(), Error.getMessage());
258 } catch (const std::string &Error) {
259 errs() << argv[0] << ": " << Error << "\n";
260 } catch (const char *Error) {
261 errs() << argv[0] << ": " << Error << "\n";
263 errs() << argv[0] << ": Unknown unexpected exception occurred.\n";
266 if (Out != &outs()) {
267 delete Out; // Close the file
268 std::remove(OutputFilename.c_str()); // Remove the file, it's broken