1 //===- TableGen.cpp - Top-Level TableGen implementation -------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source 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 //===----------------------------------------------------------------------===//
19 #include "llvm/Support/CommandLine.h"
20 #include "llvm/Support/Streams.h"
21 #include "llvm/System/Signals.h"
22 #include "llvm/Support/FileUtilities.h"
23 #include "CallingConvEmitter.h"
24 #include "CodeEmitterGen.h"
25 #include "RegisterInfoEmitter.h"
26 #include "InstrInfoEmitter.h"
27 #include "AsmWriterEmitter.h"
28 #include "DAGISelEmitter.h"
29 #include "SubtargetEmitter.h"
30 #include "IntrinsicEmitter.h"
40 GenRegisterEnums, GenRegister, GenRegisterHeader,
41 GenInstrEnums, GenInstrs, GenAsmWriter,
51 Action(cl::desc("Action to perform:"),
52 cl::values(clEnumValN(PrintRecords, "print-records",
53 "Print all records to stdout (default)"),
54 clEnumValN(GenEmitter, "gen-emitter",
55 "Generate machine code emitter"),
56 clEnumValN(GenRegisterEnums, "gen-register-enums",
57 "Generate enum values for registers"),
58 clEnumValN(GenRegister, "gen-register-desc",
59 "Generate a register info description"),
60 clEnumValN(GenRegisterHeader, "gen-register-desc-header",
61 "Generate a register info description header"),
62 clEnumValN(GenInstrEnums, "gen-instr-enums",
63 "Generate enum values for instructions"),
64 clEnumValN(GenInstrs, "gen-instr-desc",
65 "Generate instruction descriptions"),
66 clEnumValN(GenCallingConv, "gen-callingconv",
67 "Generate calling convention descriptions"),
68 clEnumValN(GenAsmWriter, "gen-asm-writer",
69 "Generate assembly writer"),
70 clEnumValN(GenDAGISel, "gen-dag-isel",
71 "Generate a DAG instruction selector"),
72 clEnumValN(GenSubtarget, "gen-subtarget",
73 "Generate subtarget enumerations"),
74 clEnumValN(GenIntrinsic, "gen-intrinsic",
75 "Generate intrinsic information"),
76 clEnumValN(PrintEnums, "print-enums",
77 "Print enum values for a class"),
81 Class("class", cl::desc("Print Enum list for this class"),
82 cl::value_desc("class name"));
85 OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename"),
89 InputFilename(cl::Positional, cl::desc("<input file>"), cl::init("-"));
92 IncludeDirs("I", cl::desc("Directory of include files"),
93 cl::value_desc("directory"), cl::Prefix);
97 void ParseFile(const std::string &Filename,
98 const std::vector<std::string> &IncludeDirs);
101 RecordKeeper llvm::Records;
103 int main(int argc, char **argv) {
104 cl::ParseCommandLineOptions(argc, argv);
105 ParseFile(InputFilename, IncludeDirs);
107 std::ostream *Out = cout.stream();
108 if (OutputFilename != "-") {
109 Out = new std::ofstream(OutputFilename.c_str());
112 cerr << argv[0] << ": error opening " << OutputFilename << "!\n";
116 // Make sure the file gets removed if *gasp* tablegen crashes...
117 sys::RemoveFileOnSignal(sys::Path(OutputFilename));
123 *Out << Records; // No argument, dump all contents
126 CodeEmitterGen(Records).run(*Out);
129 case GenRegisterEnums:
130 RegisterInfoEmitter(Records).runEnums(*Out);
133 RegisterInfoEmitter(Records).run(*Out);
135 case GenRegisterHeader:
136 RegisterInfoEmitter(Records).runHeader(*Out);
140 InstrInfoEmitter(Records).runEnums(*Out);
143 InstrInfoEmitter(Records).run(*Out);
146 CallingConvEmitter(Records).run(*Out);
149 AsmWriterEmitter(Records).run(*Out);
153 DAGISelEmitter(Records).run(*Out);
156 SubtargetEmitter(Records).run(*Out);
159 IntrinsicEmitter(Records).run(*Out);
163 std::vector<Record*> Recs = Records.getAllDerivedDefinitions(Class);
164 for (unsigned i = 0, e = Recs.size(); i != e; ++i)
165 *Out << Recs[i]->getName() << ", ";
170 assert(1 && "Invalid Action");
173 } catch (const std::string &Error) {
174 cerr << argv[0] << ": " << Error << "\n";
175 if (Out != cout.stream()) {
176 delete Out; // Close the file
177 std::remove(OutputFilename.c_str()); // Remove the file, it's broken
181 cerr << argv[0] << ": Unknown unexpected exception occurred.\n";
182 if (Out != cout.stream()) {
183 delete Out; // Close the file
184 std::remove(OutputFilename.c_str()); // Remove the file, it's broken
189 if (Out != cout.stream()) {
190 delete Out; // Close the file