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(raw_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(raw_ostream &OS, MVT::SimpleValueType VT) {
144 if (EVT(VT).isInteger()) {
145 unsigned BitWidth = EVT(VT).getSizeInBits();
146 OS << "IntegerType::get(Context, " << BitWidth << ")";
147 } else if (VT == MVT::Other) {
148 // MVT::OtherVT is used to mean the empty struct type here.
149 OS << "StructType::get(Context)";
150 } else if (VT == MVT::f32) {
151 OS << "Type::getFloatTy(Context)";
152 } else if (VT == MVT::f64) {
153 OS << "Type::getDoubleTy(Context)";
154 } else if (VT == MVT::f80) {
155 OS << "Type::getX86_FP80Ty(Context)";
156 } else if (VT == MVT::f128) {
157 OS << "Type::getFP128Ty(Context)";
158 } else if (VT == MVT::ppcf128) {
159 OS << "Type::getPPC_FP128Ty(Context)";
160 } else if (VT == MVT::isVoid) {
161 OS << "Type::getVoidTy(Context)";
162 } else if (VT == MVT::Metadata) {
163 OS << "Type::getMetadataTy(Context)";
165 assert(false && "Unsupported ValueType!");
169 static void EmitTypeGenerate(raw_ostream &OS, const Record *ArgType,
172 static void EmitTypeGenerate(raw_ostream &OS,
173 const std::vector<Record*> &ArgTypes,
175 if (ArgTypes.empty())
176 return EmitTypeForValueType(OS, MVT::isVoid);
178 if (ArgTypes.size() == 1)
179 return EmitTypeGenerate(OS, ArgTypes.front(), ArgNo);
181 OS << "StructType::get(Context, ";
183 for (std::vector<Record*>::const_iterator
184 I = ArgTypes.begin(), E = ArgTypes.end(); I != E; ++I) {
185 EmitTypeGenerate(OS, *I, ArgNo);
192 static void EmitTypeGenerate(raw_ostream &OS, const Record *ArgType,
194 MVT::SimpleValueType VT = getValueType(ArgType->getValueAsDef("VT"));
196 if (ArgType->isSubClassOf("LLVMMatchType")) {
197 unsigned Number = ArgType->getValueAsInt("Number");
198 assert(Number < ArgNo && "Invalid matching number!");
199 if (ArgType->isSubClassOf("LLVMExtendedElementVectorType"))
200 OS << "VectorType::getExtendedElementVectorType"
201 << "(dyn_cast<VectorType>(Tys[" << Number << "]))";
202 else if (ArgType->isSubClassOf("LLVMTruncatedElementVectorType"))
203 OS << "VectorType::getTruncatedElementVectorType"
204 << "(dyn_cast<VectorType>(Tys[" << Number << "]))";
206 OS << "Tys[" << Number << "]";
207 } else if (VT == MVT::iAny || VT == MVT::fAny || VT == MVT::vAny) {
208 // NOTE: The ArgNo variable here is not the absolute argument number, it is
209 // the index of the "arbitrary" type in the Tys array passed to the
210 // Intrinsic::getDeclaration function. Consequently, we only want to
211 // increment it when we actually hit an overloaded type. Getting this wrong
212 // leads to very subtle bugs!
213 OS << "Tys[" << ArgNo++ << "]";
214 } else if (EVT(VT).isVector()) {
216 OS << "VectorType::get(";
217 EmitTypeForValueType(OS, VVT.getVectorElementType().getSimpleVT().SimpleTy);
218 OS << ", " << VVT.getVectorNumElements() << ")";
219 } else if (VT == MVT::iPTR) {
220 OS << "PointerType::getUnqual(";
221 EmitTypeGenerate(OS, ArgType->getValueAsDef("ElTy"), ArgNo);
223 } else if (VT == MVT::iPTRAny) {
224 // Make sure the user has passed us an argument type to overload. If not,
225 // treat it as an ordinary (not overloaded) intrinsic.
226 OS << "(" << ArgNo << " < numTys) ? Tys[" << ArgNo
227 << "] : PointerType::getUnqual(";
228 EmitTypeGenerate(OS, ArgType->getValueAsDef("ElTy"), ArgNo);
231 } else if (VT == MVT::isVoid) {
233 OS << "Type::getVoidTy(Context)";
235 // MVT::isVoid is used to mean varargs here.
238 EmitTypeForValueType(OS, VT);
242 /// RecordListComparator - Provide a deterministic comparator for lists of
245 typedef std::pair<std::vector<Record*>, std::vector<Record*> > RecPair;
246 struct RecordListComparator {
247 bool operator()(const RecPair &LHS,
248 const RecPair &RHS) const {
250 const std::vector<Record*> *LHSVec = &LHS.first;
251 const std::vector<Record*> *RHSVec = &RHS.first;
252 unsigned RHSSize = RHSVec->size();
253 unsigned LHSSize = LHSVec->size();
255 for (; i != LHSSize; ++i) {
256 if (i == RHSSize) return false; // RHS is shorter than LHS.
257 if ((*LHSVec)[i] != (*RHSVec)[i])
258 return (*LHSVec)[i]->getName() < (*RHSVec)[i]->getName();
261 if (i != RHSSize) return true;
264 LHSVec = &LHS.second;
265 RHSVec = &RHS.second;
266 RHSSize = RHSVec->size();
267 LHSSize = LHSVec->size();
269 for (i = 0; i != LHSSize; ++i) {
270 if (i == RHSSize) return false; // RHS is shorter than LHS.
271 if ((*LHSVec)[i] != (*RHSVec)[i])
272 return (*LHSVec)[i]->getName() < (*RHSVec)[i]->getName();
280 void IntrinsicEmitter::EmitVerifier(const std::vector<CodeGenIntrinsic> &Ints,
282 OS << "// Verifier::visitIntrinsicFunctionCall code.\n";
283 OS << "#ifdef GET_INTRINSIC_VERIFIER\n";
284 OS << " switch (ID) {\n";
285 OS << " default: assert(0 && \"Invalid intrinsic!\");\n";
287 // This checking can emit a lot of very common code. To reduce the amount of
288 // code that we emit, batch up cases that have identical types. This avoids
289 // problems where GCC can run out of memory compiling Verifier.cpp.
290 typedef std::map<RecPair, std::vector<unsigned>, RecordListComparator> MapTy;
291 MapTy UniqueArgInfos;
293 // Compute the unique argument type info.
294 for (unsigned i = 0, e = Ints.size(); i != e; ++i)
295 UniqueArgInfos[make_pair(Ints[i].IS.RetTypeDefs,
296 Ints[i].IS.ParamTypeDefs)].push_back(i);
298 // Loop through the array, emitting one comparison for each batch.
299 for (MapTy::iterator I = UniqueArgInfos.begin(),
300 E = UniqueArgInfos.end(); I != E; ++I) {
301 for (unsigned i = 0, e = I->second.size(); i != e; ++i)
302 OS << " case Intrinsic::" << Ints[I->second[i]].EnumName << ":\t\t// "
303 << Ints[I->second[i]].Name << "\n";
305 const RecPair &ArgTypes = I->first;
306 const std::vector<Record*> &RetTys = ArgTypes.first;
307 const std::vector<Record*> &ParamTys = ArgTypes.second;
308 std::vector<unsigned> OverloadedTypeIndices;
310 OS << " VerifyIntrinsicPrototype(ID, IF, " << RetTys.size() << ", "
313 // Emit return types.
314 for (unsigned j = 0, je = RetTys.size(); j != je; ++j) {
315 Record *ArgType = RetTys[j];
318 if (ArgType->isSubClassOf("LLVMMatchType")) {
319 unsigned Number = ArgType->getValueAsInt("Number");
320 assert(Number < OverloadedTypeIndices.size() &&
321 "Invalid matching number!");
322 Number = OverloadedTypeIndices[Number];
323 if (ArgType->isSubClassOf("LLVMExtendedElementVectorType"))
324 OS << "~(ExtendedElementVectorType | " << Number << ")";
325 else if (ArgType->isSubClassOf("LLVMTruncatedElementVectorType"))
326 OS << "~(TruncatedElementVectorType | " << Number << ")";
330 MVT::SimpleValueType VT = getValueType(ArgType->getValueAsDef("VT"));
331 OS << getEnumName(VT);
333 if (EVT(VT).isOverloaded())
334 OverloadedTypeIndices.push_back(j);
336 if (VT == MVT::isVoid && j != 0 && j != je - 1)
337 throw "Var arg type not last argument";
341 // Emit the parameter types.
342 for (unsigned j = 0, je = ParamTys.size(); j != je; ++j) {
343 Record *ArgType = ParamTys[j];
346 if (ArgType->isSubClassOf("LLVMMatchType")) {
347 unsigned Number = ArgType->getValueAsInt("Number");
348 assert(Number < OverloadedTypeIndices.size() &&
349 "Invalid matching number!");
350 Number = OverloadedTypeIndices[Number];
351 if (ArgType->isSubClassOf("LLVMExtendedElementVectorType"))
352 OS << "~(ExtendedElementVectorType | " << Number << ")";
353 else if (ArgType->isSubClassOf("LLVMTruncatedElementVectorType"))
354 OS << "~(TruncatedElementVectorType | " << Number << ")";
358 MVT::SimpleValueType VT = getValueType(ArgType->getValueAsDef("VT"));
359 OS << getEnumName(VT);
361 if (EVT(VT).isOverloaded())
362 OverloadedTypeIndices.push_back(j + RetTys.size());
364 if (VT == MVT::isVoid && j != 0 && j != je - 1)
365 throw "Var arg type not last argument";
376 void IntrinsicEmitter::EmitGenerator(const std::vector<CodeGenIntrinsic> &Ints,
378 OS << "// Code for generating Intrinsic function declarations.\n";
379 OS << "#ifdef GET_INTRINSIC_GENERATOR\n";
380 OS << " switch (id) {\n";
381 OS << " default: assert(0 && \"Invalid intrinsic!\");\n";
383 // Similar to GET_INTRINSIC_VERIFIER, batch up cases that have identical
385 typedef std::map<RecPair, std::vector<unsigned>, RecordListComparator> MapTy;
386 MapTy UniqueArgInfos;
388 // Compute the unique argument type info.
389 for (unsigned i = 0, e = Ints.size(); i != e; ++i)
390 UniqueArgInfos[make_pair(Ints[i].IS.RetTypeDefs,
391 Ints[i].IS.ParamTypeDefs)].push_back(i);
393 // Loop through the array, emitting one generator for each batch.
394 std::string IntrinsicStr = TargetPrefix + "Intrinsic::";
396 for (MapTy::iterator I = UniqueArgInfos.begin(),
397 E = UniqueArgInfos.end(); I != E; ++I) {
398 for (unsigned i = 0, e = I->second.size(); i != e; ++i)
399 OS << " case " << IntrinsicStr << Ints[I->second[i]].EnumName
400 << ":\t\t// " << Ints[I->second[i]].Name << "\n";
402 const RecPair &ArgTypes = I->first;
403 const std::vector<Record*> &RetTys = ArgTypes.first;
404 const std::vector<Record*> &ParamTys = ArgTypes.second;
406 unsigned N = ParamTys.size();
409 getValueType(ParamTys[N - 1]->getValueAsDef("VT")) == MVT::isVoid) {
410 OS << " IsVarArg = true;\n";
415 OS << " ResultTy = ";
416 EmitTypeGenerate(OS, RetTys, ArgNo);
419 for (unsigned j = 0; j != N; ++j) {
420 OS << " ArgTys.push_back(";
421 EmitTypeGenerate(OS, ParamTys[j], ArgNo);
432 /// EmitAttributes - This emits the Intrinsic::getAttributes method.
433 void IntrinsicEmitter::
434 EmitAttributes(const std::vector<CodeGenIntrinsic> &Ints, raw_ostream &OS) {
435 OS << "// Add parameter attributes that are not common to all intrinsics.\n";
436 OS << "#ifdef GET_INTRINSIC_ATTRIBUTES\n";
438 OS << "static AttrListPtr getAttributes(" << TargetPrefix
439 << "Intrinsic::ID id) {";
441 OS << "AttrListPtr Intrinsic::getAttributes(ID id) {";
442 OS << " // No intrinsic can throw exceptions.\n";
443 OS << " Attributes Attr = Attribute::NoUnwind;\n";
444 OS << " switch (id) {\n";
445 OS << " default: break;\n";
446 unsigned MaxArgAttrs = 0;
447 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
449 std::max(MaxArgAttrs, unsigned(Ints[i].ArgumentAttributes.size()));
450 switch (Ints[i].ModRef) {
452 case CodeGenIntrinsic::NoMem:
453 OS << " case " << TargetPrefix << "Intrinsic::" << Ints[i].EnumName
458 OS << " Attr |= Attribute::ReadNone; // These do not access memory.\n";
460 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
461 switch (Ints[i].ModRef) {
463 case CodeGenIntrinsic::ReadArgMem:
464 case CodeGenIntrinsic::ReadMem:
465 OS << " case " << TargetPrefix << "Intrinsic::" << Ints[i].EnumName
470 OS << " Attr |= Attribute::ReadOnly; // These do not write memory.\n";
473 OS << " AttributeWithIndex AWI[" << MaxArgAttrs+1 << "];\n";
474 OS << " unsigned NumAttrs = 0;\n";
475 OS << " switch (id) {\n";
476 OS << " default: break;\n";
478 // Add argument attributes for any intrinsics that have them.
479 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
480 if (Ints[i].ArgumentAttributes.empty()) continue;
482 OS << " case " << TargetPrefix << "Intrinsic::" << Ints[i].EnumName
485 std::vector<std::pair<unsigned, CodeGenIntrinsic::ArgAttribute> > ArgAttrs =
486 Ints[i].ArgumentAttributes;
487 // Sort by argument index.
488 std::sort(ArgAttrs.begin(), ArgAttrs.end());
490 unsigned NumArgsWithAttrs = 0;
492 while (!ArgAttrs.empty()) {
493 unsigned ArgNo = ArgAttrs[0].first;
495 OS << " AWI[" << NumArgsWithAttrs++ << "] = AttributeWithIndex::get("
498 while (!ArgAttrs.empty() && ArgAttrs[0].first == ArgNo) {
499 switch (ArgAttrs[0].second) {
500 default: assert(0 && "Unknown arg attribute");
501 case CodeGenIntrinsic::NoCapture:
502 OS << "|Attribute::NoCapture";
505 ArgAttrs.erase(ArgAttrs.begin());
510 OS << " NumAttrs = " << NumArgsWithAttrs << ";\n";
515 OS << " AWI[NumAttrs] = AttributeWithIndex::get(~0, Attr);\n";
516 OS << " return AttrListPtr::get(AWI, NumAttrs+1);\n";
518 OS << "#endif // GET_INTRINSIC_ATTRIBUTES\n\n";
521 /// EmitModRefBehavior - Determine intrinsic alias analysis mod/ref behavior.
522 void IntrinsicEmitter::
523 EmitModRefBehavior(const std::vector<CodeGenIntrinsic> &Ints, raw_ostream &OS){
524 OS << "// Determine intrinsic alias analysis mod/ref behavior.\n";
525 OS << "#ifdef GET_INTRINSIC_MODREF_BEHAVIOR\n";
526 OS << "switch (iid) {\n";
527 OS << "default:\n return UnknownModRefBehavior;\n";
528 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
529 if (Ints[i].ModRef == CodeGenIntrinsic::WriteMem)
531 OS << "case " << TargetPrefix << "Intrinsic::" << Ints[i].EnumName
533 switch (Ints[i].ModRef) {
535 assert(false && "Unknown Mod/Ref type!");
536 case CodeGenIntrinsic::NoMem:
537 OS << " return DoesNotAccessMemory;\n";
539 case CodeGenIntrinsic::ReadArgMem:
540 case CodeGenIntrinsic::ReadMem:
541 OS << " return OnlyReadsMemory;\n";
543 case CodeGenIntrinsic::WriteArgMem:
544 OS << " return AccessesArguments;\n";
549 OS << "#endif // GET_INTRINSIC_MODREF_BEHAVIOR\n\n";
552 void IntrinsicEmitter::
553 EmitGCCBuiltinList(const std::vector<CodeGenIntrinsic> &Ints, raw_ostream &OS){
554 OS << "// Get the GCC builtin that corresponds to an LLVM intrinsic.\n";
555 OS << "#ifdef GET_GCC_BUILTIN_NAME\n";
556 OS << " switch (F->getIntrinsicID()) {\n";
557 OS << " default: BuiltinName = \"\"; break;\n";
558 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
559 if (!Ints[i].GCCBuiltinName.empty()) {
560 OS << " case Intrinsic::" << Ints[i].EnumName << ": BuiltinName = \""
561 << Ints[i].GCCBuiltinName << "\"; break;\n";
568 /// EmitBuiltinComparisons - Emit comparisons to determine whether the specified
569 /// sorted range of builtin names is equal to the current builtin. This breaks
570 /// it down into a simple tree.
572 /// At this point, we know that all the builtins in the range have the same name
573 /// for the first 'CharStart' characters. Only the end of the name needs to be
575 typedef std::map<std::string, std::string>::const_iterator StrMapIterator;
576 static void EmitBuiltinComparisons(StrMapIterator Start, StrMapIterator End,
577 unsigned CharStart, unsigned Indent,
578 std::string TargetPrefix, raw_ostream &OS) {
579 if (Start == End) return; // empty range.
581 // Determine what, if anything, is the same about all these strings.
582 std::string CommonString = Start->first;
583 unsigned NumInRange = 0;
584 for (StrMapIterator I = Start; I != End; ++I, ++NumInRange) {
585 // Find the first character that doesn't match.
586 const std::string &ThisStr = I->first;
587 unsigned NonMatchChar = CharStart;
588 while (NonMatchChar < CommonString.size() &&
589 NonMatchChar < ThisStr.size() &&
590 CommonString[NonMatchChar] == ThisStr[NonMatchChar])
592 // Truncate off pieces that don't match.
593 CommonString.resize(NonMatchChar);
596 // Just compare the rest of the string.
597 if (NumInRange == 1) {
598 if (CharStart != CommonString.size()) {
599 OS << std::string(Indent*2, ' ') << "if (!memcmp(BuiltinName";
600 if (CharStart) OS << "+" << CharStart;
601 OS << ", \"" << (CommonString.c_str()+CharStart) << "\", ";
602 OS << CommonString.size() - CharStart << "))\n";
605 OS << std::string(Indent*2, ' ') << "IntrinsicID = " << TargetPrefix
607 OS << Start->second << ";\n";
611 // At this point, we potentially have a common prefix for these builtins, emit
612 // a check for this common prefix.
613 if (CommonString.size() != CharStart) {
614 OS << std::string(Indent*2, ' ') << "if (!memcmp(BuiltinName";
615 if (CharStart) OS << "+" << CharStart;
616 OS << ", \"" << (CommonString.c_str()+CharStart) << "\", ";
617 OS << CommonString.size()-CharStart << ")) {\n";
619 EmitBuiltinComparisons(Start, End, CommonString.size(), Indent+1,
621 OS << std::string(Indent*2, ' ') << "}\n";
625 // Output a switch on the character that differs across the set.
626 OS << std::string(Indent*2, ' ') << "switch (BuiltinName[" << CharStart
629 OS << " // \"" << std::string(Start->first.begin(),
630 Start->first.begin()+CharStart) << "\"";
633 for (StrMapIterator I = Start; I != End; ) {
634 char ThisChar = I->first[CharStart];
635 OS << std::string(Indent*2, ' ') << "case '" << ThisChar << "':\n";
636 // Figure out the range that has this common character.
637 StrMapIterator NextChar = I;
638 for (++NextChar; NextChar != End && NextChar->first[CharStart] == ThisChar;
641 EmitBuiltinComparisons(I, NextChar, CharStart+1, Indent+1, TargetPrefix,OS);
642 OS << std::string(Indent*2, ' ') << " break;\n";
645 OS << std::string(Indent*2, ' ') << "}\n";
648 /// EmitTargetBuiltins - All of the builtins in the specified map are for the
649 /// same target, and we already checked it.
650 static void EmitTargetBuiltins(const std::map<std::string, std::string> &BIM,
651 const std::string &TargetPrefix,
653 // Rearrange the builtins by length.
654 std::vector<std::map<std::string, std::string> > BuiltinsByLen;
655 BuiltinsByLen.reserve(100);
657 for (StrMapIterator I = BIM.begin(), E = BIM.end(); I != E; ++I) {
658 if (I->first.size() >= BuiltinsByLen.size())
659 BuiltinsByLen.resize(I->first.size()+1);
660 BuiltinsByLen[I->first.size()].insert(*I);
663 // Now that we have all the builtins by their length, emit a switch stmt.
664 OS << " switch (strlen(BuiltinName)) {\n";
665 OS << " default: break;\n";
666 for (unsigned i = 0, e = BuiltinsByLen.size(); i != e; ++i) {
667 if (BuiltinsByLen[i].empty()) continue;
668 OS << " case " << i << ":\n";
669 EmitBuiltinComparisons(BuiltinsByLen[i].begin(), BuiltinsByLen[i].end(),
670 0, 3, TargetPrefix, OS);
677 void IntrinsicEmitter::
678 EmitIntrinsicToGCCBuiltinMap(const std::vector<CodeGenIntrinsic> &Ints,
680 typedef std::map<std::string, std::map<std::string, std::string> > BIMTy;
682 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
683 if (!Ints[i].GCCBuiltinName.empty()) {
684 // Get the map for this target prefix.
685 std::map<std::string, std::string> &BIM =BuiltinMap[Ints[i].TargetPrefix];
687 if (!BIM.insert(std::make_pair(Ints[i].GCCBuiltinName,
688 Ints[i].EnumName)).second)
689 throw "Intrinsic '" + Ints[i].TheDef->getName() +
690 "': duplicate GCC builtin name!";
694 OS << "// Get the LLVM intrinsic that corresponds to a GCC builtin.\n";
695 OS << "// This is used by the C front-end. The GCC builtin name is passed\n";
696 OS << "// in as BuiltinName, and a target prefix (e.g. 'ppc') is passed\n";
697 OS << "// in as TargetPrefix. The result is assigned to 'IntrinsicID'.\n";
698 OS << "#ifdef GET_LLVM_INTRINSIC_FOR_GCC_BUILTIN\n";
701 OS << "static " << TargetPrefix << "Intrinsic::ID "
702 << "getIntrinsicForGCCBuiltin(const char "
703 << "*TargetPrefix, const char *BuiltinName) {\n";
704 OS << " " << TargetPrefix << "Intrinsic::ID IntrinsicID = ";
706 OS << "Intrinsic::ID Intrinsic::getIntrinsicForGCCBuiltin(const char "
707 << "*TargetPrefix, const char *BuiltinName) {\n";
708 OS << " Intrinsic::ID IntrinsicID = ";
712 OS << "(" << TargetPrefix<< "Intrinsic::ID)";
714 OS << "Intrinsic::not_intrinsic;\n";
716 // Note: this could emit significantly better code if we cared.
717 for (BIMTy::iterator I = BuiltinMap.begin(), E = BuiltinMap.end();I != E;++I){
719 if (!I->first.empty())
720 OS << "if (!strcmp(TargetPrefix, \"" << I->first << "\")) ";
722 OS << "/* Target Independent Builtins */ ";
725 // Emit the comparisons for this target prefix.
726 EmitTargetBuiltins(I->second, TargetPrefix, OS);
729 OS << " return IntrinsicID;\n";