1 //===- IntrinsicEmitter.cpp - Generate intrinsic information --------------===//
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 // This tablegen backend emits information about intrinsic functions.
12 //===----------------------------------------------------------------------===//
14 #include "CodeGenTarget.h"
15 #include "IntrinsicEmitter.h"
17 #include "llvm/ADT/StringExtras.h"
21 //===----------------------------------------------------------------------===//
22 // IntrinsicEmitter Implementation
23 //===----------------------------------------------------------------------===//
25 void IntrinsicEmitter::run(std::ostream &OS) {
26 EmitSourceFileHeader("Intrinsic Function Source Fragment", OS);
28 std::vector<CodeGenIntrinsic> Ints = LoadIntrinsics(Records, TargetOnly);
30 if (TargetOnly && !Ints.empty())
31 TargetPrefix = Ints[0].TargetPrefix;
33 // Emit the enum information.
34 EmitEnumInfo(Ints, OS);
36 // Emit the intrinsic ID -> name table.
37 EmitIntrinsicToNameTable(Ints, OS);
39 // Emit the intrinsic ID -> overload table.
40 EmitIntrinsicToOverloadTable(Ints, OS);
42 // Emit the function name recognizer.
43 EmitFnNameRecognizer(Ints, OS);
45 // Emit the intrinsic verifier.
46 EmitVerifier(Ints, OS);
48 // Emit the intrinsic declaration generator.
49 EmitGenerator(Ints, OS);
51 // Emit the intrinsic parameter attributes.
52 EmitAttributes(Ints, OS);
54 // Emit intrinsic alias analysis mod/ref behavior.
55 EmitModRefBehavior(Ints, OS);
57 // Emit a list of intrinsics with corresponding GCC builtins.
58 EmitGCCBuiltinList(Ints, OS);
60 // Emit code to translate GCC builtins into LLVM intrinsics.
61 EmitIntrinsicToGCCBuiltinMap(Ints, OS);
64 void IntrinsicEmitter::EmitEnumInfo(const std::vector<CodeGenIntrinsic> &Ints,
66 OS << "// Enum values for Intrinsics.h\n";
67 OS << "#ifdef GET_INTRINSIC_ENUM_VALUES\n";
68 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
69 OS << " " << Ints[i].EnumName;
70 OS << ((i != e-1) ? ", " : " ");
71 OS << std::string(40-Ints[i].EnumName.size(), ' ')
72 << "// " << Ints[i].Name << "\n";
77 void IntrinsicEmitter::
78 EmitFnNameRecognizer(const std::vector<CodeGenIntrinsic> &Ints,
80 // Build a function name -> intrinsic name mapping.
81 std::map<std::string, unsigned> IntMapping;
82 for (unsigned i = 0, e = Ints.size(); i != e; ++i)
83 IntMapping[Ints[i].Name] = i;
85 OS << "// Function name -> enum value recognizer code.\n";
86 OS << "#ifdef GET_FUNCTION_RECOGNIZER\n";
87 OS << " switch (Name[5]) {\n";
89 // Emit the intrinsics in sorted order.
91 for (std::map<std::string, unsigned>::iterator I = IntMapping.begin(),
92 E = IntMapping.end(); I != E; ++I) {
93 if (I->first[5] != LastChar) {
94 LastChar = I->first[5];
96 OS << " case '" << LastChar << "':\n";
99 // For overloaded intrinsics, only the prefix needs to match
100 if (Ints[I->second].isOverloaded)
101 OS << " if (Len > " << I->first.size()
102 << " && !memcmp(Name, \"" << I->first << ".\", "
103 << (I->first.size() + 1) << ")) return " << TargetPrefix << "Intrinsic::"
104 << Ints[I->second].EnumName << ";\n";
106 OS << " if (Len == " << I->first.size()
107 << " && !memcmp(Name, \"" << I->first << "\", "
108 << I->first.size() << ")) return " << TargetPrefix << "Intrinsic::"
109 << Ints[I->second].EnumName << ";\n";
115 void IntrinsicEmitter::
116 EmitIntrinsicToNameTable(const std::vector<CodeGenIntrinsic> &Ints,
118 OS << "// Intrinsic ID to name table\n";
119 OS << "#ifdef GET_INTRINSIC_NAME_TABLE\n";
120 OS << " // Note that entry #0 is the invalid intrinsic!\n";
121 for (unsigned i = 0, e = Ints.size(); i != e; ++i)
122 OS << " \"" << Ints[i].Name << "\",\n";
126 void IntrinsicEmitter::
127 EmitIntrinsicToOverloadTable(const std::vector<CodeGenIntrinsic> &Ints,
129 OS << "// Intrinsic ID to overload table\n";
130 OS << "#ifdef GET_INTRINSIC_OVERLOAD_TABLE\n";
131 OS << " // Note that entry #0 is the invalid intrinsic!\n";
132 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
134 if (Ints[i].isOverloaded)
143 static void EmitTypeForValueType(std::ostream &OS, MVT::SimpleValueType VT) {
144 if (MVT(VT).isInteger()) {
145 unsigned BitWidth = MVT(VT).getSizeInBits();
146 OS << "IntegerType::get(" << BitWidth << ")";
147 } else if (VT == MVT::Other) {
148 // MVT::OtherVT is used to mean the empty struct type here.
149 OS << "StructType::get(std::vector<const Type *>())";
150 } else if (VT == MVT::f32) {
151 OS << "Type::FloatTy";
152 } else if (VT == MVT::f64) {
153 OS << "Type::DoubleTy";
154 } else if (VT == MVT::f80) {
155 OS << "Type::X86_FP80Ty";
156 } else if (VT == MVT::f128) {
157 OS << "Type::FP128Ty";
158 } else if (VT == MVT::ppcf128) {
159 OS << "Type::PPC_FP128Ty";
160 } else if (VT == MVT::isVoid) {
161 OS << "Type::VoidTy";
163 assert(false && "Unsupported ValueType!");
167 static void EmitTypeGenerate(std::ostream &OS, const Record *ArgType,
170 static void EmitTypeGenerate(std::ostream &OS,
171 const std::vector<Record*> &ArgTypes,
173 if (ArgTypes.size() == 1) {
174 EmitTypeGenerate(OS, ArgTypes.front(), ArgNo);
178 OS << "StructType::get(";
180 for (std::vector<Record*>::const_iterator
181 I = ArgTypes.begin(), E = ArgTypes.end(); I != E; ++I) {
182 EmitTypeGenerate(OS, *I, ArgNo);
189 static void EmitTypeGenerate(std::ostream &OS, const Record *ArgType,
191 MVT::SimpleValueType VT = getValueType(ArgType->getValueAsDef("VT"));
193 if (ArgType->isSubClassOf("LLVMMatchType")) {
194 unsigned Number = ArgType->getValueAsInt("Number");
195 assert(Number < ArgNo && "Invalid matching number!");
196 if (ArgType->isSubClassOf("LLVMExtendedElementVectorType"))
197 OS << "VectorType::getExtendedElementVectorType"
198 << "(dyn_cast<VectorType>(Tys[" << Number << "]))";
199 else if (ArgType->isSubClassOf("LLVMTruncatedElementVectorType"))
200 OS << "VectorType::getTruncatedElementVectorType"
201 << "(dyn_cast<VectorType>(Tys[" << Number << "]))";
203 OS << "Tys[" << Number << "]";
204 } else if (VT == MVT::iAny || VT == MVT::fAny) {
205 // NOTE: The ArgNo variable here is not the absolute argument number, it is
206 // the index of the "arbitrary" type in the Tys array passed to the
207 // Intrinsic::getDeclaration function. Consequently, we only want to
208 // increment it when we actually hit an overloaded type. Getting this wrong
209 // leads to very subtle bugs!
210 OS << "Tys[" << ArgNo++ << "]";
211 } else if (MVT(VT).isVector()) {
213 OS << "VectorType::get(";
214 EmitTypeForValueType(OS, VVT.getVectorElementType().getSimpleVT());
215 OS << ", " << VVT.getVectorNumElements() << ")";
216 } else if (VT == MVT::iPTR) {
217 OS << "PointerType::getUnqual(";
218 EmitTypeGenerate(OS, ArgType->getValueAsDef("ElTy"), ArgNo);
220 } else if (VT == MVT::iPTRAny) {
221 // Make sure the user has passed us an argument type to overload. If not,
222 // treat it as an ordinary (not overloaded) intrinsic.
223 OS << "(" << ArgNo << " < numTys) ? Tys[" << ArgNo
224 << "] : PointerType::getUnqual(";
225 EmitTypeGenerate(OS, ArgType->getValueAsDef("ElTy"), ArgNo);
228 } else if (VT == MVT::isVoid) {
230 OS << "Type::VoidTy";
232 // MVT::isVoid is used to mean varargs here.
235 EmitTypeForValueType(OS, VT);
239 /// RecordListComparator - Provide a determinstic comparator for lists of
242 typedef std::pair<std::vector<Record*>, std::vector<Record*> > RecPair;
243 struct RecordListComparator {
244 bool operator()(const RecPair &LHS,
245 const RecPair &RHS) const {
247 const std::vector<Record*> *LHSVec = &LHS.first;
248 const std::vector<Record*> *RHSVec = &RHS.first;
249 unsigned RHSSize = RHSVec->size();
250 unsigned LHSSize = LHSVec->size();
253 if (i == RHSSize) return false; // RHS is shorter than LHS.
254 if ((*LHSVec)[i] != (*RHSVec)[i])
255 return (*LHSVec)[i]->getName() < (*RHSVec)[i]->getName();
256 } while (++i != LHSSize);
258 if (i != RHSSize) return true;
261 LHSVec = &LHS.second;
262 RHSVec = &RHS.second;
263 RHSSize = RHSVec->size();
264 LHSSize = LHSVec->size();
266 for (i = 0; i != LHSSize; ++i) {
267 if (i == RHSSize) return false; // RHS is shorter than LHS.
268 if ((*LHSVec)[i] != (*RHSVec)[i])
269 return (*LHSVec)[i]->getName() < (*RHSVec)[i]->getName();
277 void IntrinsicEmitter::EmitVerifier(const std::vector<CodeGenIntrinsic> &Ints,
279 OS << "// Verifier::visitIntrinsicFunctionCall code.\n";
280 OS << "#ifdef GET_INTRINSIC_VERIFIER\n";
281 OS << " switch (ID) {\n";
282 OS << " default: assert(0 && \"Invalid intrinsic!\");\n";
284 // This checking can emit a lot of very common code. To reduce the amount of
285 // code that we emit, batch up cases that have identical types. This avoids
286 // problems where GCC can run out of memory compiling Verifier.cpp.
287 typedef std::map<RecPair, std::vector<unsigned>, RecordListComparator> MapTy;
288 MapTy UniqueArgInfos;
290 // Compute the unique argument type info.
291 for (unsigned i = 0, e = Ints.size(); i != e; ++i)
292 UniqueArgInfos[make_pair(Ints[i].IS.RetTypeDefs,
293 Ints[i].IS.ParamTypeDefs)].push_back(i);
295 // Loop through the array, emitting one comparison for each batch.
296 for (MapTy::iterator I = UniqueArgInfos.begin(),
297 E = UniqueArgInfos.end(); I != E; ++I) {
298 for (unsigned i = 0, e = I->second.size(); i != e; ++i)
299 OS << " case Intrinsic::" << Ints[I->second[i]].EnumName << ":\t\t// "
300 << Ints[I->second[i]].Name << "\n";
302 const RecPair &ArgTypes = I->first;
303 const std::vector<Record*> &RetTys = ArgTypes.first;
304 const std::vector<Record*> &ParamTys = ArgTypes.second;
306 OS << " VerifyIntrinsicPrototype(ID, IF, " << RetTys.size() << ", "
309 // Emit return types.
310 for (unsigned j = 0, je = RetTys.size(); j != je; ++j) {
311 Record *ArgType = RetTys[j];
314 if (ArgType->isSubClassOf("LLVMMatchType")) {
315 unsigned Number = ArgType->getValueAsInt("Number");
316 assert(Number < j && "Invalid matching number!");
317 if (ArgType->isSubClassOf("LLVMExtendedElementVectorType"))
318 OS << "~(ExtendedElementVectorType | " << Number << ")";
319 else if (ArgType->isSubClassOf("LLVMTruncatedElementVectorType"))
320 OS << "~(TruncatedElementVectorType | " << Number << ")";
324 MVT::SimpleValueType VT = getValueType(ArgType->getValueAsDef("VT"));
325 OS << getEnumName(VT);
327 if (VT == MVT::isVoid && j != 0 && j != je - 1)
328 throw "Var arg type not last argument";
332 // Emit the parameter types.
333 for (unsigned j = 0, je = ParamTys.size(); j != je; ++j) {
334 Record *ArgType = ParamTys[j];
337 if (ArgType->isSubClassOf("LLVMMatchType")) {
338 unsigned Number = ArgType->getValueAsInt("Number");
339 assert(Number < j + RetTys.size() && "Invalid matching number!");
340 if (ArgType->isSubClassOf("LLVMExtendedElementVectorType"))
341 OS << "~(ExtendedElementVectorType | " << Number << ")";
342 else if (ArgType->isSubClassOf("LLVMTruncatedElementVectorType"))
343 OS << "~(TruncatedElementVectorType | " << Number << ")";
347 MVT::SimpleValueType VT = getValueType(ArgType->getValueAsDef("VT"));
348 OS << getEnumName(VT);
350 if (VT == MVT::isVoid && j != 0 && j != je - 1)
351 throw "Var arg type not last argument";
362 void IntrinsicEmitter::EmitGenerator(const std::vector<CodeGenIntrinsic> &Ints,
364 OS << "// Code for generating Intrinsic function declarations.\n";
365 OS << "#ifdef GET_INTRINSIC_GENERATOR\n";
366 OS << " switch (id) {\n";
367 OS << " default: assert(0 && \"Invalid intrinsic!\");\n";
369 // Similar to GET_INTRINSIC_VERIFIER, batch up cases that have identical
371 typedef std::map<RecPair, std::vector<unsigned>, RecordListComparator> MapTy;
372 MapTy UniqueArgInfos;
374 // Compute the unique argument type info.
375 for (unsigned i = 0, e = Ints.size(); i != e; ++i)
376 UniqueArgInfos[make_pair(Ints[i].IS.RetTypeDefs,
377 Ints[i].IS.ParamTypeDefs)].push_back(i);
379 // Loop through the array, emitting one generator for each batch.
380 std::string IntrinsicStr = TargetPrefix + "Intrinsic::";
382 for (MapTy::iterator I = UniqueArgInfos.begin(),
383 E = UniqueArgInfos.end(); I != E; ++I) {
384 for (unsigned i = 0, e = I->second.size(); i != e; ++i)
385 OS << " case " << IntrinsicStr << Ints[I->second[i]].EnumName
386 << ":\t\t// " << Ints[I->second[i]].Name << "\n";
388 const RecPair &ArgTypes = I->first;
389 const std::vector<Record*> &RetTys = ArgTypes.first;
390 const std::vector<Record*> &ParamTys = ArgTypes.second;
392 unsigned N = ParamTys.size();
395 getValueType(ParamTys[N - 1]->getValueAsDef("VT")) == MVT::isVoid) {
396 OS << " IsVarArg = true;\n";
401 OS << " ResultTy = ";
402 EmitTypeGenerate(OS, RetTys, ArgNo);
405 for (unsigned j = 0; j != N; ++j) {
406 OS << " ArgTys.push_back(";
407 EmitTypeGenerate(OS, ParamTys[j], ArgNo);
418 /// EmitAttributes - This emits the Intrinsic::getAttributes method.
419 void IntrinsicEmitter::
420 EmitAttributes(const std::vector<CodeGenIntrinsic> &Ints, std::ostream &OS) {
421 OS << "// Add parameter attributes that are not common to all intrinsics.\n";
422 OS << "#ifdef GET_INTRINSIC_ATTRIBUTES\n";
424 OS << "static AttrListPtr getAttributes(" << TargetPrefix
425 << "Intrinsic::ID id) {";
427 OS << "AttrListPtr Intrinsic::getAttributes(ID id) {";
428 OS << " // No intrinsic can throw exceptions.\n";
429 OS << " Attributes Attr = Attribute::NoUnwind;\n";
430 OS << " switch (id) {\n";
431 OS << " default: break;\n";
432 unsigned MaxArgAttrs = 0;
433 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
435 std::max(MaxArgAttrs, unsigned(Ints[i].ArgumentAttributes.size()));
436 switch (Ints[i].ModRef) {
438 case CodeGenIntrinsic::NoMem:
439 OS << " case " << TargetPrefix << "Intrinsic::" << Ints[i].EnumName
444 OS << " Attr |= Attribute::ReadNone; // These do not access memory.\n";
446 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
447 switch (Ints[i].ModRef) {
449 case CodeGenIntrinsic::ReadArgMem:
450 case CodeGenIntrinsic::ReadMem:
451 OS << " case " << TargetPrefix << "Intrinsic::" << Ints[i].EnumName
456 OS << " Attr |= Attribute::ReadOnly; // These do not write memory.\n";
459 OS << " AttributeWithIndex AWI[" << MaxArgAttrs+1 << "];\n";
460 OS << " unsigned NumAttrs = 0;\n";
461 OS << " switch (id) {\n";
462 OS << " default: break;\n";
464 // Add argument attributes for any intrinsics that have them.
465 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
466 if (Ints[i].ArgumentAttributes.empty()) continue;
468 OS << " case " << TargetPrefix << "Intrinsic::" << Ints[i].EnumName
471 std::vector<std::pair<unsigned, CodeGenIntrinsic::ArgAttribute> > ArgAttrs =
472 Ints[i].ArgumentAttributes;
473 // Sort by argument index.
474 std::sort(ArgAttrs.begin(), ArgAttrs.end());
476 unsigned NumArgsWithAttrs = 0;
478 while (!ArgAttrs.empty()) {
479 unsigned ArgNo = ArgAttrs[0].first;
481 OS << " AWI[" << NumArgsWithAttrs++ << "] = AttributeWithIndex::get("
484 while (!ArgAttrs.empty() && ArgAttrs[0].first == ArgNo) {
485 switch (ArgAttrs[0].second) {
486 default: assert(0 && "Unknown arg attribute");
487 case CodeGenIntrinsic::NoCapture:
488 OS << "|Attribute::NoCapture";
491 ArgAttrs.erase(ArgAttrs.begin());
496 OS << " NumAttrs = " << NumArgsWithAttrs << ";\n";
501 OS << " AWI[NumAttrs] = AttributeWithIndex::get(~0, Attr);\n";
502 OS << " return AttrListPtr::get(AWI, NumAttrs+1);\n";
504 OS << "#endif // GET_INTRINSIC_ATTRIBUTES\n\n";
507 /// EmitModRefBehavior - Determine intrinsic alias analysis mod/ref behavior.
508 void IntrinsicEmitter::
509 EmitModRefBehavior(const std::vector<CodeGenIntrinsic> &Ints, std::ostream &OS){
510 OS << "// Determine intrinsic alias analysis mod/ref behavior.\n";
511 OS << "#ifdef GET_INTRINSIC_MODREF_BEHAVIOR\n";
512 OS << "switch (id) {\n";
513 OS << "default:\n return UnknownModRefBehavior;\n";
514 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
515 if (Ints[i].ModRef == CodeGenIntrinsic::WriteMem)
517 OS << "case " << TargetPrefix << "Intrinsic::" << Ints[i].EnumName
519 switch (Ints[i].ModRef) {
521 assert(false && "Unknown Mod/Ref type!");
522 case CodeGenIntrinsic::NoMem:
523 OS << " return DoesNotAccessMemory;\n";
525 case CodeGenIntrinsic::ReadArgMem:
526 case CodeGenIntrinsic::ReadMem:
527 OS << " return OnlyReadsMemory;\n";
529 case CodeGenIntrinsic::WriteArgMem:
530 OS << " return AccessesArguments;\n";
535 OS << "#endif // GET_INTRINSIC_MODREF_BEHAVIOR\n\n";
538 void IntrinsicEmitter::
539 EmitGCCBuiltinList(const std::vector<CodeGenIntrinsic> &Ints, std::ostream &OS){
540 OS << "// Get the GCC builtin that corresponds to an LLVM intrinsic.\n";
541 OS << "#ifdef GET_GCC_BUILTIN_NAME\n";
542 OS << " switch (F->getIntrinsicID()) {\n";
543 OS << " default: BuiltinName = \"\"; break;\n";
544 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
545 if (!Ints[i].GCCBuiltinName.empty()) {
546 OS << " case Intrinsic::" << Ints[i].EnumName << ": BuiltinName = \""
547 << Ints[i].GCCBuiltinName << "\"; break;\n";
554 /// EmitBuiltinComparisons - Emit comparisons to determine whether the specified
555 /// sorted range of builtin names is equal to the current builtin. This breaks
556 /// it down into a simple tree.
558 /// At this point, we know that all the builtins in the range have the same name
559 /// for the first 'CharStart' characters. Only the end of the name needs to be
561 typedef std::map<std::string, std::string>::const_iterator StrMapIterator;
562 static void EmitBuiltinComparisons(StrMapIterator Start, StrMapIterator End,
563 unsigned CharStart, unsigned Indent,
564 std::string TargetPrefix, std::ostream &OS) {
565 if (Start == End) return; // empty range.
567 // Determine what, if anything, is the same about all these strings.
568 std::string CommonString = Start->first;
569 unsigned NumInRange = 0;
570 for (StrMapIterator I = Start; I != End; ++I, ++NumInRange) {
571 // Find the first character that doesn't match.
572 const std::string &ThisStr = I->first;
573 unsigned NonMatchChar = CharStart;
574 while (NonMatchChar < CommonString.size() &&
575 NonMatchChar < ThisStr.size() &&
576 CommonString[NonMatchChar] == ThisStr[NonMatchChar])
578 // Truncate off pieces that don't match.
579 CommonString.resize(NonMatchChar);
582 // Just compare the rest of the string.
583 if (NumInRange == 1) {
584 if (CharStart != CommonString.size()) {
585 OS << std::string(Indent*2, ' ') << "if (!memcmp(BuiltinName";
586 if (CharStart) OS << "+" << CharStart;
587 OS << ", \"" << (CommonString.c_str()+CharStart) << "\", ";
588 OS << CommonString.size() - CharStart << "))\n";
591 OS << std::string(Indent*2, ' ') << "IntrinsicID = " << TargetPrefix
593 OS << Start->second << ";\n";
597 // At this point, we potentially have a common prefix for these builtins, emit
598 // a check for this common prefix.
599 if (CommonString.size() != CharStart) {
600 OS << std::string(Indent*2, ' ') << "if (!memcmp(BuiltinName";
601 if (CharStart) OS << "+" << CharStart;
602 OS << ", \"" << (CommonString.c_str()+CharStart) << "\", ";
603 OS << CommonString.size()-CharStart << ")) {\n";
605 EmitBuiltinComparisons(Start, End, CommonString.size(), Indent+1,
607 OS << std::string(Indent*2, ' ') << "}\n";
611 // Output a switch on the character that differs across the set.
612 OS << std::string(Indent*2, ' ') << "switch (BuiltinName[" << CharStart
615 OS << " // \"" << std::string(Start->first.begin(),
616 Start->first.begin()+CharStart) << "\"";
619 for (StrMapIterator I = Start; I != End; ) {
620 char ThisChar = I->first[CharStart];
621 OS << std::string(Indent*2, ' ') << "case '" << ThisChar << "':\n";
622 // Figure out the range that has this common character.
623 StrMapIterator NextChar = I;
624 for (++NextChar; NextChar != End && NextChar->first[CharStart] == ThisChar;
627 EmitBuiltinComparisons(I, NextChar, CharStart+1, Indent+1, TargetPrefix,OS);
628 OS << std::string(Indent*2, ' ') << " break;\n";
631 OS << std::string(Indent*2, ' ') << "}\n";
634 /// EmitTargetBuiltins - All of the builtins in the specified map are for the
635 /// same target, and we already checked it.
636 static void EmitTargetBuiltins(const std::map<std::string, std::string> &BIM,
637 const std::string &TargetPrefix,
639 // Rearrange the builtins by length.
640 std::vector<std::map<std::string, std::string> > BuiltinsByLen;
641 BuiltinsByLen.reserve(100);
643 for (StrMapIterator I = BIM.begin(), E = BIM.end(); I != E; ++I) {
644 if (I->first.size() >= BuiltinsByLen.size())
645 BuiltinsByLen.resize(I->first.size()+1);
646 BuiltinsByLen[I->first.size()].insert(*I);
649 // Now that we have all the builtins by their length, emit a switch stmt.
650 OS << " switch (strlen(BuiltinName)) {\n";
651 OS << " default: break;\n";
652 for (unsigned i = 0, e = BuiltinsByLen.size(); i != e; ++i) {
653 if (BuiltinsByLen[i].empty()) continue;
654 OS << " case " << i << ":\n";
655 EmitBuiltinComparisons(BuiltinsByLen[i].begin(), BuiltinsByLen[i].end(),
656 0, 3, TargetPrefix, OS);
663 void IntrinsicEmitter::
664 EmitIntrinsicToGCCBuiltinMap(const std::vector<CodeGenIntrinsic> &Ints,
666 typedef std::map<std::string, std::map<std::string, std::string> > BIMTy;
668 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
669 if (!Ints[i].GCCBuiltinName.empty()) {
670 // Get the map for this target prefix.
671 std::map<std::string, std::string> &BIM =BuiltinMap[Ints[i].TargetPrefix];
673 if (!BIM.insert(std::make_pair(Ints[i].GCCBuiltinName,
674 Ints[i].EnumName)).second)
675 throw "Intrinsic '" + Ints[i].TheDef->getName() +
676 "': duplicate GCC builtin name!";
680 OS << "// Get the LLVM intrinsic that corresponds to a GCC builtin.\n";
681 OS << "// This is used by the C front-end. The GCC builtin name is passed\n";
682 OS << "// in as BuiltinName, and a target prefix (e.g. 'ppc') is passed\n";
683 OS << "// in as TargetPrefix. The result is assigned to 'IntrinsicID'.\n";
684 OS << "#ifdef GET_LLVM_INTRINSIC_FOR_GCC_BUILTIN\n";
687 OS << "static " << TargetPrefix << "Intrinsic::ID "
688 << "getIntrinsicForGCCBuiltin(const char "
689 << "*TargetPrefix, const char *BuiltinName) {\n";
690 OS << " " << TargetPrefix << "Intrinsic::ID IntrinsicID = ";
692 OS << "Intrinsic::ID Intrinsic::getIntrinsicForGCCBuiltin(const char "
693 << "*TargetPrefix, const char *BuiltinName) {\n";
694 OS << " Intrinsic::ID IntrinsicID = ";
698 OS << "(" << TargetPrefix<< "Intrinsic::ID)";
700 OS << "Intrinsic::not_intrinsic;\n";
702 // Note: this could emit significantly better code if we cared.
703 for (BIMTy::iterator I = BuiltinMap.begin(), E = BuiltinMap.end();I != E;++I){
705 if (!I->first.empty())
706 OS << "if (!strcmp(TargetPrefix, \"" << I->first << "\")) ";
708 OS << "/* Target Independent Builtins */ ";
711 // Emit the comparisons for this target prefix.
712 EmitTargetBuiltins(I->second, TargetPrefix, OS);
715 OS << " return IntrinsicID;\n";