1 //===- TableGen.cpp - Top-Level TableGen implementation for LLVM ----------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file contains the main function for LLVM's TableGen.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #include "TableGenBackends.h" // Declares all backends.
15 #include "llvm/Support/CommandLine.h"
16 #include "llvm/Support/ManagedStatic.h"
17 #include "llvm/Support/PrettyStackTrace.h"
18 #include "llvm/Support/Signals.h"
19 #include "llvm/TableGen/Error.h"
20 #include "llvm/TableGen/Main.h"
21 #include "llvm/TableGen/Record.h"
22 #include "llvm/TableGen/SetTheory.h"
23
24 using namespace llvm;
25
26 enum ActionType {
27 PrintRecords,
28 GenEmitter,
29 GenRegisterInfo,
30 GenInstrInfo,
31 GenAsmWriter,
32 GenAsmMatcher,
33 GenDisassembler,
34 GenPseudoLowering,
35 GenCallingConv,
36 GenDAGISel,
37 GenDFAPacketizer,
38 GenFastISel,
39 GenSubtarget,
40 GenIntrinsic,
41 GenTgtIntrinsic,
42 PrintEnums,
43 PrintSets,
44 GenOptParserDefs,
45 GenCTags,
46 GenAttributes,
47 GenSearchableTables,
48 };
49
50 namespace {
51 cl::opt<ActionType>
52 Action(cl::desc("Action to perform:"),
53 cl::values(clEnumValN(PrintRecords, "print-records",
54 "Print all records to stdout (default)"),
55 clEnumValN(GenEmitter, "gen-emitter",
56 "Generate machine code emitter"),
57 clEnumValN(GenRegisterInfo, "gen-register-info",
58 "Generate registers and register classes info"),
59 clEnumValN(GenInstrInfo, "gen-instr-info",
60 "Generate instruction descriptions"),
61 clEnumValN(GenCallingConv, "gen-callingconv",
62 "Generate calling convention descriptions"),
63 clEnumValN(GenAsmWriter, "gen-asm-writer",
64 "Generate assembly writer"),
65 clEnumValN(GenDisassembler, "gen-disassembler",
66 "Generate disassembler"),
67 clEnumValN(GenPseudoLowering, "gen-pseudo-lowering",
68 "Generate pseudo instruction lowering"),
69 clEnumValN(GenAsmMatcher, "gen-asm-matcher",
70 "Generate assembly instruction matcher"),
71 clEnumValN(GenDAGISel, "gen-dag-isel",
72 "Generate a DAG instruction selector"),
73 clEnumValN(GenDFAPacketizer, "gen-dfa-packetizer",
74 "Generate DFA Packetizer for VLIW targets"),
75 clEnumValN(GenFastISel, "gen-fast-isel",
76 "Generate a \"fast\" instruction selector"),
77 clEnumValN(GenSubtarget, "gen-subtarget",
78 "Generate subtarget enumerations"),
79 clEnumValN(GenIntrinsic, "gen-intrinsic",
80 "Generate intrinsic information"),
81 clEnumValN(GenTgtIntrinsic, "gen-tgt-intrinsic",
82 "Generate target intrinsic information"),
83 clEnumValN(PrintEnums, "print-enums",
84 "Print enum values for a class"),
85 clEnumValN(PrintSets, "print-sets",
86 "Print expanded sets for testing DAG exprs"),
87 clEnumValN(GenOptParserDefs, "gen-opt-parser-defs",
88 "Generate option definitions"),
89 clEnumValN(GenCTags, "gen-ctags",
90 "Generate ctags-compatible index"),
91 clEnumValN(GenAttributes, "gen-attrs",
92 "Generate attributes"),
93 clEnumValN(GenSearchableTables, "gen-searchable-tables",
94 "Generate generic binary-searchable table"),
95 clEnumValEnd));
96
97 cl::opt<std::string>
98 Class("class", cl::desc("Print Enum list for this class"),
99 cl::value_desc("class name"));
100
LLVMTableGenMain(raw_ostream & OS,RecordKeeper & Records)101 bool LLVMTableGenMain(raw_ostream &OS, RecordKeeper &Records) {
102 switch (Action) {
103 case PrintRecords:
104 OS << Records; // No argument, dump all contents
105 break;
106 case GenEmitter:
107 EmitCodeEmitter(Records, OS);
108 break;
109 case GenRegisterInfo:
110 EmitRegisterInfo(Records, OS);
111 break;
112 case GenInstrInfo:
113 EmitInstrInfo(Records, OS);
114 break;
115 case GenCallingConv:
116 EmitCallingConv(Records, OS);
117 break;
118 case GenAsmWriter:
119 EmitAsmWriter(Records, OS);
120 break;
121 case GenAsmMatcher:
122 EmitAsmMatcher(Records, OS);
123 break;
124 case GenDisassembler:
125 EmitDisassembler(Records, OS);
126 break;
127 case GenPseudoLowering:
128 EmitPseudoLowering(Records, OS);
129 break;
130 case GenDAGISel:
131 EmitDAGISel(Records, OS);
132 break;
133 case GenDFAPacketizer:
134 EmitDFAPacketizer(Records, OS);
135 break;
136 case GenFastISel:
137 EmitFastISel(Records, OS);
138 break;
139 case GenSubtarget:
140 EmitSubtarget(Records, OS);
141 break;
142 case GenIntrinsic:
143 EmitIntrinsics(Records, OS);
144 break;
145 case GenTgtIntrinsic:
146 EmitIntrinsics(Records, OS, true);
147 break;
148 case GenOptParserDefs:
149 EmitOptParser(Records, OS);
150 break;
151 case PrintEnums:
152 {
153 for (Record *Rec : Records.getAllDerivedDefinitions(Class))
154 OS << Rec->getName() << ", ";
155 OS << "\n";
156 break;
157 }
158 case PrintSets:
159 {
160 SetTheory Sets;
161 Sets.addFieldExpander("Set", "Elements");
162 for (Record *Rec : Records.getAllDerivedDefinitions("Set")) {
163 OS << Rec->getName() << " = [";
164 const std::vector<Record*> *Elts = Sets.expand(Rec);
165 assert(Elts && "Couldn't expand Set instance");
166 for (Record *Elt : *Elts)
167 OS << ' ' << Elt->getName();
168 OS << " ]\n";
169 }
170 break;
171 }
172 case GenCTags:
173 EmitCTags(Records, OS);
174 break;
175 case GenAttributes:
176 EmitAttributes(Records, OS);
177 break;
178 case GenSearchableTables:
179 EmitSearchableTables(Records, OS);
180 break;
181 }
182
183 return false;
184 }
185 }
186
main(int argc,char ** argv)187 int main(int argc, char **argv) {
188 sys::PrintStackTraceOnErrorSignal(argv[0]);
189 PrettyStackTraceProgram X(argc, argv);
190 cl::ParseCommandLineOptions(argc, argv);
191
192 llvm_shutdown_obj Y;
193
194 return TableGenMain(argv[0], &LLVMTableGenMain);
195 }
196
197 #ifdef __has_feature
198 #if __has_feature(address_sanitizer)
199 #include <sanitizer/lsan_interface.h>
200 // Disable LeakSanitizer for this binary as it has too many leaks that are not
201 // very interesting to fix. See compiler-rt/include/sanitizer/lsan_interface.h .
__lsan_is_turned_off()202 int __lsan_is_turned_off() { return 1; }
203 #endif // __has_feature(address_sanitizer)
204 #endif // defined(__has_feature)
205