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When removing a function from the function set and adding it to deferred, we
[llvm.git] / utils / TableGen / IntrinsicEmitter.cpp
blob08f67284a279f2d488b3fe9ce3f3a6b1347e302a
1 //===- IntrinsicEmitter.cpp - Generate intrinsic information --------------===//
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 tablegen backend emits information about intrinsic functions.
11 //
12 //===----------------------------------------------------------------------===//
13
14 #include "CodeGenTarget.h"
15 #include "IntrinsicEmitter.h"
16 #include "Record.h"
17 #include "StringMatcher.h"
18 #include "llvm/ADT/StringExtras.h"
19 #include <algorithm>
20 using namespace llvm;
21
22 //===----------------------------------------------------------------------===//
23 // IntrinsicEmitter Implementation
24 //===----------------------------------------------------------------------===//
25
26 void IntrinsicEmitter::run(raw_ostream &OS) {
27 EmitSourceFileHeader("Intrinsic Function Source Fragment", OS);
28
29 std::vector<CodeGenIntrinsic> Ints = LoadIntrinsics(Records, TargetOnly);
30
31 if (TargetOnly && !Ints.empty())
32 TargetPrefix = Ints[0].TargetPrefix;
33
34 EmitPrefix(OS);
35
36 // Emit the enum information.
37 EmitEnumInfo(Ints, OS);
38
39 // Emit the intrinsic ID -> name table.
40 EmitIntrinsicToNameTable(Ints, OS);
41
42 // Emit the intrinsic ID -> overload table.
43 EmitIntrinsicToOverloadTable(Ints, OS);
44
45 // Emit the function name recognizer.
46 EmitFnNameRecognizer(Ints, OS);
47
48 // Emit the intrinsic verifier.
49 EmitVerifier(Ints, OS);
50
51 // Emit the intrinsic declaration generator.
52 EmitGenerator(Ints, OS);
53
54 // Emit the intrinsic parameter attributes.
55 EmitAttributes(Ints, OS);
56
57 // Emit intrinsic alias analysis mod/ref behavior.
58 EmitModRefBehavior(Ints, OS);
59
60 // Emit a list of intrinsics with corresponding GCC builtins.
61 EmitGCCBuiltinList(Ints, OS);
62
63 // Emit code to translate GCC builtins into LLVM intrinsics.
64 EmitIntrinsicToGCCBuiltinMap(Ints, OS);
65
66 EmitSuffix(OS);
67 }
68
69 void IntrinsicEmitter::EmitPrefix(raw_ostream &OS) {
70 OS << "// VisualStudio defines setjmp as _setjmp\n"
71 "#if defined(_MSC_VER) && defined(setjmp) && \\\n"
72 " !defined(setjmp_undefined_for_msvc)\n"
73 "# pragma push_macro(\"setjmp\")\n"
74 "# undef setjmp\n"
75 "# define setjmp_undefined_for_msvc\n"
76 "#endif\n\n";
77 }
78
79 void IntrinsicEmitter::EmitSuffix(raw_ostream &OS) {
80 OS << "#if defined(_MSC_VER) && defined(setjmp_undefined_for_msvc)\n"
81 "// let's return it to _setjmp state\n"
82 "# pragma pop_macro(\"setjmp\")\n"
83 "# undef setjmp_undefined_for_msvc\n"
84 "#endif\n\n";
85 }
86
87 void IntrinsicEmitter::EmitEnumInfo(const std::vector<CodeGenIntrinsic> &Ints,
88 raw_ostream &OS) {
89 OS << "// Enum values for Intrinsics.h\n";
90 OS << "#ifdef GET_INTRINSIC_ENUM_VALUES\n";
91 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
92 OS << " " << Ints[i].EnumName;
93 OS << ((i != e-1) ? ", " : " ");
94 OS << std::string(40-Ints[i].EnumName.size(), ' ')
95 << "// " << Ints[i].Name << "\n";
96 }
97 OS << "#endif\n\n";
98 }
99
100 void IntrinsicEmitter::
101 EmitFnNameRecognizer(const std::vector<CodeGenIntrinsic> &Ints,
102 raw_ostream &OS) {
103 // Build a 'first character of function name' -> intrinsic # mapping.
104 std::map<char, std::vector<unsigned> > IntMapping;
105 for (unsigned i = 0, e = Ints.size(); i != e; ++i)
106 IntMapping[Ints[i].Name[5]].push_back(i);
107
108 OS << "// Function name -> enum value recognizer code.\n";
109 OS << "#ifdef GET_FUNCTION_RECOGNIZER\n";
110 OS << " StringRef NameR(Name+6, Len-6); // Skip over 'llvm.'\n";
111 OS << " switch (Name[5]) { // Dispatch on first letter.\n";
112 OS << " default: break;\n";
113 // Emit the intrinsic matching stuff by first letter.
114 for (std::map<char, std::vector<unsigned> >::iterator I = IntMapping.begin(),
115 E = IntMapping.end(); I != E; ++I) {
116 OS << " case '" << I->first << "':\n";
117 std::vector<unsigned> &IntList = I->second;
118
119 // Emit all the overloaded intrinsics first, build a table of the
120 // non-overloaded ones.
121 std::vector<StringMatcher::StringPair> MatchTable;
122
123 for (unsigned i = 0, e = IntList.size(); i != e; ++i) {
124 unsigned IntNo = IntList[i];
125 std::string Result = "return " + TargetPrefix + "Intrinsic::" +
126 Ints[IntNo].EnumName + ";";
127
128 if (!Ints[IntNo].isOverloaded) {
129 MatchTable.push_back(std::make_pair(Ints[IntNo].Name.substr(6),Result));
130 continue;
131 }
132
133 // For overloaded intrinsics, only the prefix needs to match
134 std::string TheStr = Ints[IntNo].Name.substr(6);
135 TheStr += '.'; // Require "bswap." instead of bswap.
136 OS << " if (NameR.startswith(\"" << TheStr << "\")) "
137 << Result << '\n';
138 }
139
140 // Emit the matcher logic for the fixed length strings.
141 StringMatcher("NameR", MatchTable, OS).Emit(1);
142 OS << " break; // end of '" << I->first << "' case.\n";
143 }
144
145 OS << " }\n";
146 OS << "#endif\n\n";
147 }
148
149 void IntrinsicEmitter::
150 EmitIntrinsicToNameTable(const std::vector<CodeGenIntrinsic> &Ints,
151 raw_ostream &OS) {
152 OS << "// Intrinsic ID to name table\n";
153 OS << "#ifdef GET_INTRINSIC_NAME_TABLE\n";
154 OS << " // Note that entry #0 is the invalid intrinsic!\n";
155 for (unsigned i = 0, e = Ints.size(); i != e; ++i)
156 OS << " \"" << Ints[i].Name << "\",\n";
157 OS << "#endif\n\n";
158 }
159
160 void IntrinsicEmitter::
161 EmitIntrinsicToOverloadTable(const std::vector<CodeGenIntrinsic> &Ints,
162 raw_ostream &OS) {
163 OS << "// Intrinsic ID to overload table\n";
164 OS << "#ifdef GET_INTRINSIC_OVERLOAD_TABLE\n";
165 OS << " // Note that entry #0 is the invalid intrinsic!\n";
166 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
167 OS << " ";
168 if (Ints[i].isOverloaded)
169 OS << "true";
170 else
171 OS << "false";
172 OS << ",\n";
173 }
174 OS << "#endif\n\n";
175 }
176
177 static void EmitTypeForValueType(raw_ostream &OS, MVT::SimpleValueType VT) {
178 if (EVT(VT).isInteger()) {
179 unsigned BitWidth = EVT(VT).getSizeInBits();
180 OS << "IntegerType::get(Context, " << BitWidth << ")";
181 } else if (VT == MVT::Other) {
182 // MVT::OtherVT is used to mean the empty struct type here.
183 OS << "StructType::get(Context)";
184 } else if (VT == MVT::f32) {
185 OS << "Type::getFloatTy(Context)";
186 } else if (VT == MVT::f64) {
187 OS << "Type::getDoubleTy(Context)";
188 } else if (VT == MVT::f80) {
189 OS << "Type::getX86_FP80Ty(Context)";
190 } else if (VT == MVT::f128) {
191 OS << "Type::getFP128Ty(Context)";
192 } else if (VT == MVT::ppcf128) {
193 OS << "Type::getPPC_FP128Ty(Context)";
194 } else if (VT == MVT::isVoid) {
195 OS << "Type::getVoidTy(Context)";
196 } else if (VT == MVT::Metadata) {
197 OS << "Type::getMetadataTy(Context)";
198 } else if (VT == MVT::x86mmx) {
199 OS << "Type::getX86_MMXTy(Context)";
200 } else {
201 assert(false && "Unsupported ValueType!");
202 }
203 }
204
205 static void EmitTypeGenerate(raw_ostream &OS, const Record *ArgType,
206 unsigned &ArgNo);
207
208 static void EmitTypeGenerate(raw_ostream &OS,
209 const std::vector<Record*> &ArgTypes,
210 unsigned &ArgNo) {
211 if (ArgTypes.empty())
212 return EmitTypeForValueType(OS, MVT::isVoid);
213
214 if (ArgTypes.size() == 1)
215 return EmitTypeGenerate(OS, ArgTypes.front(), ArgNo);
216
217 OS << "StructType::get(Context, ";
218
219 for (std::vector<Record*>::const_iterator
220 I = ArgTypes.begin(), E = ArgTypes.end(); I != E; ++I) {
221 EmitTypeGenerate(OS, *I, ArgNo);
222 OS << ", ";
223 }
224
225 OS << " NULL)";
226 }
227
228 static void EmitTypeGenerate(raw_ostream &OS, const Record *ArgType,
229 unsigned &ArgNo) {
230 MVT::SimpleValueType VT = getValueType(ArgType->getValueAsDef("VT"));
231
232 if (ArgType->isSubClassOf("LLVMMatchType")) {
233 unsigned Number = ArgType->getValueAsInt("Number");
234 assert(Number < ArgNo && "Invalid matching number!");
235 if (ArgType->isSubClassOf("LLVMExtendedElementVectorType"))
236 OS << "VectorType::getExtendedElementVectorType"
237 << "(dyn_cast<VectorType>(Tys[" << Number << "]))";
238 else if (ArgType->isSubClassOf("LLVMTruncatedElementVectorType"))
239 OS << "VectorType::getTruncatedElementVectorType"
240 << "(dyn_cast<VectorType>(Tys[" << Number << "]))";
241 else
242 OS << "Tys[" << Number << "]";
243 } else if (VT == MVT::iAny || VT == MVT::fAny || VT == MVT::vAny) {
244 // NOTE: The ArgNo variable here is not the absolute argument number, it is
245 // the index of the "arbitrary" type in the Tys array passed to the
246 // Intrinsic::getDeclaration function. Consequently, we only want to
247 // increment it when we actually hit an overloaded type. Getting this wrong
248 // leads to very subtle bugs!
249 OS << "Tys[" << ArgNo++ << "]";
250 } else if (EVT(VT).isVector()) {
251 EVT VVT = VT;
252 OS << "VectorType::get(";
253 EmitTypeForValueType(OS, VVT.getVectorElementType().getSimpleVT().SimpleTy);
254 OS << ", " << VVT.getVectorNumElements() << ")";
255 } else if (VT == MVT::iPTR) {
256 OS << "PointerType::getUnqual(";
257 EmitTypeGenerate(OS, ArgType->getValueAsDef("ElTy"), ArgNo);
258 OS << ")";
259 } else if (VT == MVT::iPTRAny) {
260 // Make sure the user has passed us an argument type to overload. If not,
261 // treat it as an ordinary (not overloaded) intrinsic.
262 OS << "(" << ArgNo << " < numTys) ? Tys[" << ArgNo
263 << "] : PointerType::getUnqual(";
264 EmitTypeGenerate(OS, ArgType->getValueAsDef("ElTy"), ArgNo);
265 OS << ")";
266 ++ArgNo;
267 } else if (VT == MVT::isVoid) {
268 if (ArgNo == 0)
269 OS << "Type::getVoidTy(Context)";
270 else
271 // MVT::isVoid is used to mean varargs here.
272 OS << "...";
273 } else {
274 EmitTypeForValueType(OS, VT);
275 }
276 }
277
278 /// RecordListComparator - Provide a deterministic comparator for lists of
279 /// records.
280 namespace {
281 typedef std::pair<std::vector<Record*>, std::vector<Record*> > RecPair;
282 struct RecordListComparator {
283 bool operator()(const RecPair &LHS,
284 const RecPair &RHS) const {
285 unsigned i = 0;
286 const std::vector<Record*> *LHSVec = &LHS.first;
287 const std::vector<Record*> *RHSVec = &RHS.first;
288 unsigned RHSSize = RHSVec->size();
289 unsigned LHSSize = LHSVec->size();
290
291 for (; i != LHSSize; ++i) {
292 if (i == RHSSize) return false; // RHS is shorter than LHS.
293 if ((*LHSVec)[i] != (*RHSVec)[i])
294 return (*LHSVec)[i]->getName() < (*RHSVec)[i]->getName();
295 }
296
297 if (i != RHSSize) return true;
298
299 i = 0;
300 LHSVec = &LHS.second;
301 RHSVec = &RHS.second;
302 RHSSize = RHSVec->size();
303 LHSSize = LHSVec->size();
304
305 for (i = 0; i != LHSSize; ++i) {
306 if (i == RHSSize) return false; // RHS is shorter than LHS.
307 if ((*LHSVec)[i] != (*RHSVec)[i])
308 return (*LHSVec)[i]->getName() < (*RHSVec)[i]->getName();
309 }
310
311 return i != RHSSize;
312 }
313 };
314 }
315
316 void IntrinsicEmitter::EmitVerifier(const std::vector<CodeGenIntrinsic> &Ints,
317 raw_ostream &OS) {
318 OS << "// Verifier::visitIntrinsicFunctionCall code.\n";
319 OS << "#ifdef GET_INTRINSIC_VERIFIER\n";
320 OS << " switch (ID) {\n";
321 OS << " default: assert(0 && \"Invalid intrinsic!\");\n";
322
323 // This checking can emit a lot of very common code. To reduce the amount of
324 // code that we emit, batch up cases that have identical types. This avoids
325 // problems where GCC can run out of memory compiling Verifier.cpp.
326 typedef std::map<RecPair, std::vector<unsigned>, RecordListComparator> MapTy;
327 MapTy UniqueArgInfos;
328
329 // Compute the unique argument type info.
330 for (unsigned i = 0, e = Ints.size(); i != e; ++i)
331 UniqueArgInfos[make_pair(Ints[i].IS.RetTypeDefs,
332 Ints[i].IS.ParamTypeDefs)].push_back(i);
333
334 // Loop through the array, emitting one comparison for each batch.
335 for (MapTy::iterator I = UniqueArgInfos.begin(),
336 E = UniqueArgInfos.end(); I != E; ++I) {
337 for (unsigned i = 0, e = I->second.size(); i != e; ++i)
338 OS << " case Intrinsic::" << Ints[I->second[i]].EnumName << ":\t\t// "
339 << Ints[I->second[i]].Name << "\n";
340
341 const RecPair &ArgTypes = I->first;
342 const std::vector<Record*> &RetTys = ArgTypes.first;
343 const std::vector<Record*> &ParamTys = ArgTypes.second;
344 std::vector<unsigned> OverloadedTypeIndices;
345
346 OS << " VerifyIntrinsicPrototype(ID, IF, " << RetTys.size() << ", "
347 << ParamTys.size();
348
349 // Emit return types.
350 for (unsigned j = 0, je = RetTys.size(); j != je; ++j) {
351 Record *ArgType = RetTys[j];
352 OS << ", ";
353
354 if (ArgType->isSubClassOf("LLVMMatchType")) {
355 unsigned Number = ArgType->getValueAsInt("Number");
356 assert(Number < OverloadedTypeIndices.size() &&
357 "Invalid matching number!");
358 Number = OverloadedTypeIndices[Number];
359 if (ArgType->isSubClassOf("LLVMExtendedElementVectorType"))
360 OS << "~(ExtendedElementVectorType | " << Number << ")";
361 else if (ArgType->isSubClassOf("LLVMTruncatedElementVectorType"))
362 OS << "~(TruncatedElementVectorType | " << Number << ")";
363 else
364 OS << "~" << Number;
365 } else {
366 MVT::SimpleValueType VT = getValueType(ArgType->getValueAsDef("VT"));
367 OS << getEnumName(VT);
368
369 if (EVT(VT).isOverloaded())
370 OverloadedTypeIndices.push_back(j);
371
372 if (VT == MVT::isVoid && j != 0 && j != je - 1)
373 throw "Var arg type not last argument";
374 }
375 }
376
377 // Emit the parameter types.
378 for (unsigned j = 0, je = ParamTys.size(); j != je; ++j) {
379 Record *ArgType = ParamTys[j];
380 OS << ", ";
381
382 if (ArgType->isSubClassOf("LLVMMatchType")) {
383 unsigned Number = ArgType->getValueAsInt("Number");
384 assert(Number < OverloadedTypeIndices.size() &&
385 "Invalid matching number!");
386 Number = OverloadedTypeIndices[Number];
387 if (ArgType->isSubClassOf("LLVMExtendedElementVectorType"))
388 OS << "~(ExtendedElementVectorType | " << Number << ")";
389 else if (ArgType->isSubClassOf("LLVMTruncatedElementVectorType"))
390 OS << "~(TruncatedElementVectorType | " << Number << ")";
391 else
392 OS << "~" << Number;
393 } else {
394 MVT::SimpleValueType VT = getValueType(ArgType->getValueAsDef("VT"));
395 OS << getEnumName(VT);
396
397 if (EVT(VT).isOverloaded())
398 OverloadedTypeIndices.push_back(j + RetTys.size());
399
400 if (VT == MVT::isVoid && j != 0 && j != je - 1)
401 throw "Var arg type not last argument";
402 }
403 }
404
405 OS << ");\n";
406 OS << " break;\n";
407 }
408 OS << " }\n";
409 OS << "#endif\n\n";
410 }
411
412 void IntrinsicEmitter::EmitGenerator(const std::vector<CodeGenIntrinsic> &Ints,
413 raw_ostream &OS) {
414 OS << "// Code for generating Intrinsic function declarations.\n";
415 OS << "#ifdef GET_INTRINSIC_GENERATOR\n";
416 OS << " switch (id) {\n";
417 OS << " default: assert(0 && \"Invalid intrinsic!\");\n";
418
419 // Similar to GET_INTRINSIC_VERIFIER, batch up cases that have identical
420 // types.
421 typedef std::map<RecPair, std::vector<unsigned>, RecordListComparator> MapTy;
422 MapTy UniqueArgInfos;
423
424 // Compute the unique argument type info.
425 for (unsigned i = 0, e = Ints.size(); i != e; ++i)
426 UniqueArgInfos[make_pair(Ints[i].IS.RetTypeDefs,
427 Ints[i].IS.ParamTypeDefs)].push_back(i);
428
429 // Loop through the array, emitting one generator for each batch.
430 std::string IntrinsicStr = TargetPrefix + "Intrinsic::";
431
432 for (MapTy::iterator I = UniqueArgInfos.begin(),
433 E = UniqueArgInfos.end(); I != E; ++I) {
434 for (unsigned i = 0, e = I->second.size(); i != e; ++i)
435 OS << " case " << IntrinsicStr << Ints[I->second[i]].EnumName
436 << ":\t\t// " << Ints[I->second[i]].Name << "\n";
437
438 const RecPair &ArgTypes = I->first;
439 const std::vector<Record*> &RetTys = ArgTypes.first;
440 const std::vector<Record*> &ParamTys = ArgTypes.second;
441
442 unsigned N = ParamTys.size();
443
444 if (N > 1 &&
445 getValueType(ParamTys[N - 1]->getValueAsDef("VT")) == MVT::isVoid) {
446 OS << " IsVarArg = true;\n";
447 --N;
448 }
449
450 unsigned ArgNo = 0;
451 OS << " ResultTy = ";
452 EmitTypeGenerate(OS, RetTys, ArgNo);
453 OS << ";\n";
454
455 for (unsigned j = 0; j != N; ++j) {
456 OS << " ArgTys.push_back(";
457 EmitTypeGenerate(OS, ParamTys[j], ArgNo);
458 OS << ");\n";
459 }
460
461 OS << " break;\n";
462 }
463
464 OS << " }\n";
465 OS << "#endif\n\n";
466 }
467
468 /// EmitAttributes - This emits the Intrinsic::getAttributes method.
469 void IntrinsicEmitter::
470 EmitAttributes(const std::vector<CodeGenIntrinsic> &Ints, raw_ostream &OS) {
471 OS << "// Add parameter attributes that are not common to all intrinsics.\n";
472 OS << "#ifdef GET_INTRINSIC_ATTRIBUTES\n";
473 if (TargetOnly)
474 OS << "static AttrListPtr getAttributes(" << TargetPrefix
475 << "Intrinsic::ID id) {";
476 else
477 OS << "AttrListPtr Intrinsic::getAttributes(ID id) {";
478 OS << " // No intrinsic can throw exceptions.\n";
479 OS << " Attributes Attr = Attribute::NoUnwind;\n";
480 OS << " switch (id) {\n";
481 OS << " default: break;\n";
482 unsigned MaxArgAttrs = 0;
483 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
484 MaxArgAttrs =
485 std::max(MaxArgAttrs, unsigned(Ints[i].ArgumentAttributes.size()));
486 switch (Ints[i].ModRef) {
487 default: break;
488 case CodeGenIntrinsic::NoMem:
489 OS << " case " << TargetPrefix << "Intrinsic::" << Ints[i].EnumName
490 << ":\n";
491 break;
492 }
493 }
494 OS << " Attr |= Attribute::ReadNone; // These do not access memory.\n";
495 OS << " break;\n";
496 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
497 switch (Ints[i].ModRef) {
498 default: break;
499 case CodeGenIntrinsic::ReadArgMem:
500 case CodeGenIntrinsic::ReadMem:
501 OS << " case " << TargetPrefix << "Intrinsic::" << Ints[i].EnumName
502 << ":\n";
503 break;
504 }
505 }
506 OS << " Attr |= Attribute::ReadOnly; // These do not write memory.\n";
507 OS << " break;\n";
508 OS << " }\n";
509 OS << " AttributeWithIndex AWI[" << MaxArgAttrs+1 << "];\n";
510 OS << " unsigned NumAttrs = 0;\n";
511 OS << " switch (id) {\n";
512 OS << " default: break;\n";
513
514 // Add argument attributes for any intrinsics that have them.
515 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
516 if (Ints[i].ArgumentAttributes.empty()) continue;
517
518 OS << " case " << TargetPrefix << "Intrinsic::" << Ints[i].EnumName
519 << ":\n";
520
521 std::vector<std::pair<unsigned, CodeGenIntrinsic::ArgAttribute> > ArgAttrs =
522 Ints[i].ArgumentAttributes;
523 // Sort by argument index.
524 std::sort(ArgAttrs.begin(), ArgAttrs.end());
525
526 unsigned NumArgsWithAttrs = 0;
527
528 while (!ArgAttrs.empty()) {
529 unsigned ArgNo = ArgAttrs[0].first;
530
531 OS << " AWI[" << NumArgsWithAttrs++ << "] = AttributeWithIndex::get("
532 << ArgNo+1 << ", 0";
533
534 while (!ArgAttrs.empty() && ArgAttrs[0].first == ArgNo) {
535 switch (ArgAttrs[0].second) {
536 default: assert(0 && "Unknown arg attribute");
537 case CodeGenIntrinsic::NoCapture:
538 OS << "|Attribute::NoCapture";
539 break;
540 }
541 ArgAttrs.erase(ArgAttrs.begin());
542 }
543 OS << ");\n";
544 }
545
546 OS << " NumAttrs = " << NumArgsWithAttrs << ";\n";
547 OS << " break;\n";
548 }
549
550 OS << " }\n";
551 OS << " AWI[NumAttrs] = AttributeWithIndex::get(~0, Attr);\n";
552 OS << " return AttrListPtr::get(AWI, NumAttrs+1);\n";
553 OS << "}\n";
554 OS << "#endif // GET_INTRINSIC_ATTRIBUTES\n\n";
555 }
556
557 /// EmitModRefBehavior - Determine intrinsic alias analysis mod/ref behavior.
558 void IntrinsicEmitter::
559 EmitModRefBehavior(const std::vector<CodeGenIntrinsic> &Ints, raw_ostream &OS){
560 OS << "// Determine intrinsic alias analysis mod/ref behavior.\n";
561 OS << "#ifdef GET_INTRINSIC_MODREF_BEHAVIOR\n";
562 OS << "switch (iid) {\n";
563 OS << "default:\n return UnknownModRefBehavior;\n";
564 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
565 if (Ints[i].ModRef == CodeGenIntrinsic::ReadWriteMem)
566 continue;
567 OS << "case " << TargetPrefix << "Intrinsic::" << Ints[i].EnumName
568 << ":\n";
569 switch (Ints[i].ModRef) {
570 default:
571 assert(false && "Unknown Mod/Ref type!");
572 case CodeGenIntrinsic::NoMem:
573 OS << " return DoesNotAccessMemory;\n";
574 break;
575 case CodeGenIntrinsic::ReadArgMem:
576 OS << " return OnlyReadsArgumentPointees;\n";
577 break;
578 case CodeGenIntrinsic::ReadMem:
579 OS << " return OnlyReadsMemory;\n";
580 break;
581 case CodeGenIntrinsic::ReadWriteArgMem:
582 OS << " return OnlyAccessesArgumentPointees;\n";
583 break;
584 }
585 }
586 OS << "}\n";
587 OS << "#endif // GET_INTRINSIC_MODREF_BEHAVIOR\n\n";
588 }
589
590 void IntrinsicEmitter::
591 EmitGCCBuiltinList(const std::vector<CodeGenIntrinsic> &Ints, raw_ostream &OS){
592 OS << "// Get the GCC builtin that corresponds to an LLVM intrinsic.\n";
593 OS << "#ifdef GET_GCC_BUILTIN_NAME\n";
594 OS << " switch (F->getIntrinsicID()) {\n";
595 OS << " default: BuiltinName = \"\"; break;\n";
596 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
597 if (!Ints[i].GCCBuiltinName.empty()) {
598 OS << " case Intrinsic::" << Ints[i].EnumName << ": BuiltinName = \""
599 << Ints[i].GCCBuiltinName << "\"; break;\n";
600 }
601 }
602 OS << " }\n";
603 OS << "#endif\n\n";
604 }
605
606 /// EmitTargetBuiltins - All of the builtins in the specified map are for the
607 /// same target, and we already checked it.
608 static void EmitTargetBuiltins(const std::map<std::string, std::string> &BIM,
609 const std::string &TargetPrefix,
610 raw_ostream &OS) {
611
612 std::vector<StringMatcher::StringPair> Results;
613
614 for (std::map<std::string, std::string>::const_iterator I = BIM.begin(),
615 E = BIM.end(); I != E; ++I) {
616 std::string ResultCode =
617 "return " + TargetPrefix + "Intrinsic::" + I->second + ";";
618 Results.push_back(StringMatcher::StringPair(I->first, ResultCode));
619 }
620
621 StringMatcher("BuiltinName", Results, OS).Emit();
622 }
623
624
625 void IntrinsicEmitter::
626 EmitIntrinsicToGCCBuiltinMap(const std::vector<CodeGenIntrinsic> &Ints,
627 raw_ostream &OS) {
628 typedef std::map<std::string, std::map<std::string, std::string> > BIMTy;
629 BIMTy BuiltinMap;
630 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
631 if (!Ints[i].GCCBuiltinName.empty()) {
632 // Get the map for this target prefix.
633 std::map<std::string, std::string> &BIM =BuiltinMap[Ints[i].TargetPrefix];
634
635 if (!BIM.insert(std::make_pair(Ints[i].GCCBuiltinName,
636 Ints[i].EnumName)).second)
637 throw "Intrinsic '" + Ints[i].TheDef->getName() +
638 "': duplicate GCC builtin name!";
639 }
640 }
641
642 OS << "// Get the LLVM intrinsic that corresponds to a GCC builtin.\n";
643 OS << "// This is used by the C front-end. The GCC builtin name is passed\n";
644 OS << "// in as BuiltinName, and a target prefix (e.g. 'ppc') is passed\n";
645 OS << "// in as TargetPrefix. The result is assigned to 'IntrinsicID'.\n";
646 OS << "#ifdef GET_LLVM_INTRINSIC_FOR_GCC_BUILTIN\n";
647
648 if (TargetOnly) {
649 OS << "static " << TargetPrefix << "Intrinsic::ID "
650 << "getIntrinsicForGCCBuiltin(const char "
651 << "*TargetPrefixStr, const char *BuiltinNameStr) {\n";
652 } else {
653 OS << "Intrinsic::ID Intrinsic::getIntrinsicForGCCBuiltin(const char "
654 << "*TargetPrefixStr, const char *BuiltinNameStr) {\n";
655 }
656
657 OS << " StringRef BuiltinName(BuiltinNameStr);\n";
658 OS << " StringRef TargetPrefix(TargetPrefixStr);\n\n";
659
660 // Note: this could emit significantly better code if we cared.
661 for (BIMTy::iterator I = BuiltinMap.begin(), E = BuiltinMap.end();I != E;++I){
662 OS << " ";
663 if (!I->first.empty())
664 OS << "if (TargetPrefix == \"" << I->first << "\") ";
665 else
666 OS << "/* Target Independent Builtins */ ";
667 OS << "{\n";
668
669 // Emit the comparisons for this target prefix.
670 EmitTargetBuiltins(I->second, TargetPrefix, OS);
671 OS << " }\n";
672 }
673 OS << " return ";
674 if (!TargetPrefix.empty())
675 OS << "(" << TargetPrefix << "Intrinsic::ID)";
676 OS << "Intrinsic::not_intrinsic;\n";
677 OS << "}\n";
678 OS << "#endif\n\n";
679 }
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