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 "CodeGenIntrinsics.h"
15 #include "CodeGenTarget.h"
16 #include "SequenceToOffsetTable.h"
17 #include "llvm/ADT/StringExtras.h"
18 #include "llvm/TableGen/Record.h"
19 #include "llvm/TableGen/StringMatcher.h"
20 #include "llvm/TableGen/TableGenBackend.h"
25 class IntrinsicEmitter {
26 RecordKeeper &Records;
28 std::string TargetPrefix;
31 IntrinsicEmitter(RecordKeeper &R, bool T)
32 : Records(R), TargetOnly(T) {}
34 void run(raw_ostream &OS);
36 void EmitPrefix(raw_ostream &OS);
38 void EmitEnumInfo(const std::vector<CodeGenIntrinsic> &Ints,
41 void EmitFnNameRecognizer(const std::vector<CodeGenIntrinsic> &Ints,
43 void EmitIntrinsicToNameTable(const std::vector<CodeGenIntrinsic> &Ints,
45 void EmitIntrinsicToOverloadTable(const std::vector<CodeGenIntrinsic> &Ints,
47 void EmitVerifier(const std::vector<CodeGenIntrinsic> &Ints,
49 void EmitGenerator(const std::vector<CodeGenIntrinsic> &Ints,
51 void EmitAttributes(const std::vector<CodeGenIntrinsic> &Ints,
53 void EmitModRefBehavior(const std::vector<CodeGenIntrinsic> &Ints,
55 void EmitIntrinsicToGCCBuiltinMap(const std::vector<CodeGenIntrinsic> &Ints,
57 void EmitSuffix(raw_ostream &OS);
59 } // End anonymous namespace
61 //===----------------------------------------------------------------------===//
62 // IntrinsicEmitter Implementation
63 //===----------------------------------------------------------------------===//
65 void IntrinsicEmitter::run(raw_ostream &OS) {
66 emitSourceFileHeader("Intrinsic Function Source Fragment", OS);
68 std::vector<CodeGenIntrinsic> Ints = LoadIntrinsics(Records, TargetOnly);
70 if (TargetOnly && !Ints.empty())
71 TargetPrefix = Ints[0].TargetPrefix;
75 // Emit the enum information.
76 EmitEnumInfo(Ints, OS);
78 // Emit the intrinsic ID -> name table.
79 EmitIntrinsicToNameTable(Ints, OS);
81 // Emit the intrinsic ID -> overload table.
82 EmitIntrinsicToOverloadTable(Ints, OS);
84 // Emit the function name recognizer.
85 EmitFnNameRecognizer(Ints, OS);
87 // Emit the intrinsic declaration generator.
88 EmitGenerator(Ints, OS);
90 // Emit the intrinsic parameter attributes.
91 EmitAttributes(Ints, OS);
93 // Emit intrinsic alias analysis mod/ref behavior.
94 EmitModRefBehavior(Ints, OS);
96 // Emit code to translate GCC builtins into LLVM intrinsics.
97 EmitIntrinsicToGCCBuiltinMap(Ints, OS);
102 void IntrinsicEmitter::EmitPrefix(raw_ostream &OS) {
103 OS << "// VisualStudio defines setjmp as _setjmp\n"
104 "#if defined(_MSC_VER) && defined(setjmp) && \\\n"
105 " !defined(setjmp_undefined_for_msvc)\n"
106 "# pragma push_macro(\"setjmp\")\n"
108 "# define setjmp_undefined_for_msvc\n"
112 void IntrinsicEmitter::EmitSuffix(raw_ostream &OS) {
113 OS << "#if defined(_MSC_VER) && defined(setjmp_undefined_for_msvc)\n"
114 "// let's return it to _setjmp state\n"
115 "# pragma pop_macro(\"setjmp\")\n"
116 "# undef setjmp_undefined_for_msvc\n"
120 void IntrinsicEmitter::EmitEnumInfo(const std::vector<CodeGenIntrinsic> &Ints,
122 OS << "// Enum values for Intrinsics.h\n";
123 OS << "#ifdef GET_INTRINSIC_ENUM_VALUES\n";
124 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
125 OS << " " << Ints[i].EnumName;
126 OS << ((i != e-1) ? ", " : " ");
127 OS << std::string(40-Ints[i].EnumName.size(), ' ')
128 << "// " << Ints[i].Name << "\n";
133 void IntrinsicEmitter::
134 EmitFnNameRecognizer(const std::vector<CodeGenIntrinsic> &Ints,
136 // Build a 'first character of function name' -> intrinsic # mapping.
137 std::map<char, std::vector<unsigned> > IntMapping;
138 for (unsigned i = 0, e = Ints.size(); i != e; ++i)
139 IntMapping[Ints[i].Name[5]].push_back(i);
141 OS << "// Function name -> enum value recognizer code.\n";
142 OS << "#ifdef GET_FUNCTION_RECOGNIZER\n";
143 OS << " StringRef NameR(Name+6, Len-6); // Skip over 'llvm.'\n";
144 OS << " switch (Name[5]) { // Dispatch on first letter.\n";
145 OS << " default: break;\n";
146 // Emit the intrinsic matching stuff by first letter.
147 for (std::map<char, std::vector<unsigned> >::iterator I = IntMapping.begin(),
148 E = IntMapping.end(); I != E; ++I) {
149 OS << " case '" << I->first << "':\n";
150 std::vector<unsigned> &IntList = I->second;
152 // Emit all the overloaded intrinsics first, build a table of the
153 // non-overloaded ones.
154 std::vector<StringMatcher::StringPair> MatchTable;
156 for (unsigned i = 0, e = IntList.size(); i != e; ++i) {
157 unsigned IntNo = IntList[i];
158 std::string Result = "return " + TargetPrefix + "Intrinsic::" +
159 Ints[IntNo].EnumName + ";";
161 if (!Ints[IntNo].isOverloaded) {
162 MatchTable.push_back(std::make_pair(Ints[IntNo].Name.substr(6),Result));
166 // For overloaded intrinsics, only the prefix needs to match
167 std::string TheStr = Ints[IntNo].Name.substr(6);
168 TheStr += '.'; // Require "bswap." instead of bswap.
169 OS << " if (NameR.startswith(\"" << TheStr << "\")) "
173 // Emit the matcher logic for the fixed length strings.
174 StringMatcher("NameR", MatchTable, OS).Emit(1);
175 OS << " break; // end of '" << I->first << "' case.\n";
182 void IntrinsicEmitter::
183 EmitIntrinsicToNameTable(const std::vector<CodeGenIntrinsic> &Ints,
185 OS << "// Intrinsic ID to name table\n";
186 OS << "#ifdef GET_INTRINSIC_NAME_TABLE\n";
187 OS << " // Note that entry #0 is the invalid intrinsic!\n";
188 for (unsigned i = 0, e = Ints.size(); i != e; ++i)
189 OS << " \"" << Ints[i].Name << "\",\n";
193 void IntrinsicEmitter::
194 EmitIntrinsicToOverloadTable(const std::vector<CodeGenIntrinsic> &Ints,
196 OS << "// Intrinsic ID to overload bitset\n";
197 OS << "#ifdef GET_INTRINSIC_OVERLOAD_TABLE\n";
198 OS << "static const uint8_t OTable[] = {\n";
200 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
201 // Add one to the index so we emit a null bit for the invalid #0 intrinsic.
204 if (Ints[i].isOverloaded)
205 OS << " | (1<<" << (i+1)%8 << ')';
208 // OTable contains a true bit at the position if the intrinsic is overloaded.
209 OS << "return (OTable[id/8] & (1 << (id%8))) != 0;\n";
214 // NOTE: This must be kept in synch with the copy in lib/VMCore/Function.cpp!
216 // Common values should be encoded with 0-15.
234 // Values from 16+ are only encodable with the inefficient encoding.
236 IIT_EMPTYSTRUCT = 17,
241 IIT_EXTEND_VEC_ARG = 22,
242 IIT_TRUNC_VEC_ARG = 23,
247 static void EncodeFixedValueType(MVT::SimpleValueType VT,
248 std::vector<unsigned char> &Sig) {
249 if (EVT(VT).isInteger()) {
250 unsigned BitWidth = EVT(VT).getSizeInBits();
252 default: throw "unhandled integer type width in intrinsic!";
253 case 1: return Sig.push_back(IIT_I1);
254 case 8: return Sig.push_back(IIT_I8);
255 case 16: return Sig.push_back(IIT_I16);
256 case 32: return Sig.push_back(IIT_I32);
257 case 64: return Sig.push_back(IIT_I64);
262 default: throw "unhandled MVT in intrinsic!";
263 case MVT::f32: return Sig.push_back(IIT_F32);
264 case MVT::f64: return Sig.push_back(IIT_F64);
265 case MVT::Metadata: return Sig.push_back(IIT_METADATA);
266 case MVT::x86mmx: return Sig.push_back(IIT_MMX);
267 // MVT::OtherVT is used to mean the empty struct type here.
268 case MVT::Other: return Sig.push_back(IIT_EMPTYSTRUCT);
273 #pragma optimize("",off) // MSVC 2010 optimizer can't deal with this function.
276 static void EncodeFixedType(Record *R, std::vector<unsigned char> &ArgCodes,
277 std::vector<unsigned char> &Sig) {
279 if (R->isSubClassOf("LLVMMatchType")) {
280 unsigned Number = R->getValueAsInt("Number");
281 assert(Number < ArgCodes.size() && "Invalid matching number!");
282 if (R->isSubClassOf("LLVMExtendedElementVectorType"))
283 Sig.push_back(IIT_EXTEND_VEC_ARG);
284 else if (R->isSubClassOf("LLVMTruncatedElementVectorType"))
285 Sig.push_back(IIT_TRUNC_VEC_ARG);
287 Sig.push_back(IIT_ARG);
288 return Sig.push_back((Number << 2) | ArgCodes[Number]);
291 MVT::SimpleValueType VT = getValueType(R->getValueAsDef("VT"));
296 case MVT::iPTRAny: ++Tmp; // FALL THROUGH.
297 case MVT::vAny: ++Tmp; // FALL THROUGH.
298 case MVT::fAny: ++Tmp; // FALL THROUGH.
300 // If this is an "any" valuetype, then the type is the type of the next
301 // type in the list specified to getIntrinsic().
302 Sig.push_back(IIT_ARG);
304 // Figure out what arg # this is consuming, and remember what kind it was.
305 unsigned ArgNo = ArgCodes.size();
306 ArgCodes.push_back(Tmp);
308 // Encode what sort of argument it must be in the low 2 bits of the ArgNo.
309 return Sig.push_back((ArgNo << 2) | Tmp);
313 unsigned AddrSpace = 0;
314 if (R->isSubClassOf("LLVMQualPointerType")) {
315 AddrSpace = R->getValueAsInt("AddrSpace");
316 assert(AddrSpace < 256 && "Address space exceeds 255");
319 Sig.push_back(IIT_ANYPTR);
320 Sig.push_back(AddrSpace);
322 Sig.push_back(IIT_PTR);
324 return EncodeFixedType(R->getValueAsDef("ElTy"), ArgCodes, Sig);
328 if (EVT(VT).isVector()) {
330 switch (VVT.getVectorNumElements()) {
331 default: throw "unhandled vector type width in intrinsic!";
332 case 2: Sig.push_back(IIT_V2); break;
333 case 4: Sig.push_back(IIT_V4); break;
334 case 8: Sig.push_back(IIT_V8); break;
335 case 16: Sig.push_back(IIT_V16); break;
336 case 32: Sig.push_back(IIT_V32); break;
339 return EncodeFixedValueType(VVT.getVectorElementType().
340 getSimpleVT().SimpleTy, Sig);
343 EncodeFixedValueType(VT, Sig);
347 #pragma optimize("",on)
350 /// ComputeFixedEncoding - If we can encode the type signature for this
351 /// intrinsic into 32 bits, return it. If not, return ~0U.
352 static void ComputeFixedEncoding(const CodeGenIntrinsic &Int,
353 std::vector<unsigned char> &TypeSig) {
354 std::vector<unsigned char> ArgCodes;
356 if (Int.IS.RetVTs.empty())
357 TypeSig.push_back(IIT_Done);
358 else if (Int.IS.RetVTs.size() == 1 &&
359 Int.IS.RetVTs[0] == MVT::isVoid)
360 TypeSig.push_back(IIT_Done);
362 switch (Int.IS.RetVTs.size()) {
364 case 2: TypeSig.push_back(IIT_STRUCT2); break;
365 case 3: TypeSig.push_back(IIT_STRUCT3); break;
366 case 4: TypeSig.push_back(IIT_STRUCT4); break;
367 case 5: TypeSig.push_back(IIT_STRUCT5); break;
368 default: assert(0 && "Unhandled case in struct");
371 for (unsigned i = 0, e = Int.IS.RetVTs.size(); i != e; ++i)
372 EncodeFixedType(Int.IS.RetTypeDefs[i], ArgCodes, TypeSig);
375 for (unsigned i = 0, e = Int.IS.ParamTypeDefs.size(); i != e; ++i)
376 EncodeFixedType(Int.IS.ParamTypeDefs[i], ArgCodes, TypeSig);
379 static void printIITEntry(raw_ostream &OS, unsigned char X) {
383 void IntrinsicEmitter::EmitGenerator(const std::vector<CodeGenIntrinsic> &Ints,
385 // If we can compute a 32-bit fixed encoding for this intrinsic, do so and
386 // capture it in this vector, otherwise store a ~0U.
387 std::vector<unsigned> FixedEncodings;
389 SequenceToOffsetTable<std::vector<unsigned char> > LongEncodingTable;
391 std::vector<unsigned char> TypeSig;
393 // Compute the unique argument type info.
394 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
395 // Get the signature for the intrinsic.
397 ComputeFixedEncoding(Ints[i], TypeSig);
399 // Check to see if we can encode it into a 32-bit word. We can only encode
400 // 8 nibbles into a 32-bit word.
401 if (TypeSig.size() <= 8) {
404 for (unsigned i = 0, e = TypeSig.size(); i != e; ++i) {
405 // If we had an unencodable argument, bail out.
406 if (TypeSig[i] > 15) {
410 Result = (Result << 4) | TypeSig[e-i-1];
413 // If this could be encoded into a 31-bit word, return it.
414 if (!Failed && (Result >> 31) == 0) {
415 FixedEncodings.push_back(Result);
420 // Otherwise, we're going to unique the sequence into the
421 // LongEncodingTable, and use its offset in the 32-bit table instead.
422 LongEncodingTable.add(TypeSig);
424 // This is a placehold that we'll replace after the table is laid out.
425 FixedEncodings.push_back(~0U);
428 LongEncodingTable.layout();
430 OS << "// Global intrinsic function declaration type table.\n";
431 OS << "#ifdef GET_INTRINSIC_GENERATOR_GLOBAL\n";
433 OS << "static const unsigned IIT_Table[] = {\n ";
435 for (unsigned i = 0, e = FixedEncodings.size(); i != e; ++i) {
439 // If the entry fit in the table, just emit it.
440 if (FixedEncodings[i] != ~0U) {
441 OS << "0x" << utohexstr(FixedEncodings[i]) << ", ";
446 ComputeFixedEncoding(Ints[i], TypeSig);
449 // Otherwise, emit the offset into the long encoding table. We emit it this
450 // way so that it is easier to read the offset in the .def file.
451 OS << "(1U<<31) | " << LongEncodingTable.get(TypeSig) << ", ";
456 // Emit the shared table of register lists.
457 OS << "static const unsigned char IIT_LongEncodingTable[] = {\n";
458 if (!LongEncodingTable.empty())
459 LongEncodingTable.emit(OS, printIITEntry);
460 OS << " 255\n};\n\n";
462 OS << "#endif\n\n"; // End of GET_INTRINSIC_GENERATOR_GLOBAL
471 static ModRefKind getModRefKind(const CodeGenIntrinsic &intrinsic) {
472 switch (intrinsic.ModRef) {
473 case CodeGenIntrinsic::NoMem:
475 case CodeGenIntrinsic::ReadArgMem:
476 case CodeGenIntrinsic::ReadMem:
478 case CodeGenIntrinsic::ReadWriteArgMem:
479 case CodeGenIntrinsic::ReadWriteMem:
482 llvm_unreachable("bad mod-ref kind");
486 struct AttributeComparator {
487 bool operator()(const CodeGenIntrinsic *L, const CodeGenIntrinsic *R) const {
488 // Sort throwing intrinsics after non-throwing intrinsics.
489 if (L->canThrow != R->canThrow)
492 if (L->isNoReturn != R->isNoReturn)
493 return R->isNoReturn;
495 // Try to order by readonly/readnone attribute.
496 ModRefKind LK = getModRefKind(*L);
497 ModRefKind RK = getModRefKind(*R);
498 if (LK != RK) return (LK > RK);
500 // Order by argument attributes.
501 // This is reliable because each side is already sorted internally.
502 return (L->ArgumentAttributes < R->ArgumentAttributes);
505 } // End anonymous namespace
507 /// EmitAttributes - This emits the Intrinsic::getAttributes method.
508 void IntrinsicEmitter::
509 EmitAttributes(const std::vector<CodeGenIntrinsic> &Ints, raw_ostream &OS) {
510 OS << "// Add parameter attributes that are not common to all intrinsics.\n";
511 OS << "#ifdef GET_INTRINSIC_ATTRIBUTES\n";
513 OS << "static AttrListPtr getAttributes(" << TargetPrefix
514 << "Intrinsic::ID id) {\n";
516 OS << "AttrListPtr Intrinsic::getAttributes(ID id) {\n";
518 // Compute the maximum number of attribute arguments and the map
519 typedef std::map<const CodeGenIntrinsic*, unsigned,
520 AttributeComparator> UniqAttrMapTy;
521 UniqAttrMapTy UniqAttributes;
522 unsigned maxArgAttrs = 0;
523 unsigned AttrNum = 0;
524 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
525 const CodeGenIntrinsic &intrinsic = Ints[i];
527 std::max(maxArgAttrs, unsigned(intrinsic.ArgumentAttributes.size()));
528 unsigned &N = UniqAttributes[&intrinsic];
530 assert(AttrNum < 256 && "Too many unique attributes for table!");
534 // Emit an array of AttributeWithIndex. Most intrinsics will have
535 // at least one entry, for the function itself (index ~1), which is
537 OS << " static const uint8_t IntrinsicsToAttributesMap[] = {\n";
539 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
540 const CodeGenIntrinsic &intrinsic = Ints[i];
542 OS << " " << UniqAttributes[&intrinsic] << ", // "
543 << intrinsic.Name << "\n";
547 OS << " AttributeWithIndex AWI[" << maxArgAttrs+1 << "];\n";
548 OS << " unsigned NumAttrs = 0;\n";
549 OS << " if (id != 0) {\n";
550 OS << " SmallVector<Attributes::AttrVal, 8> AttrVec;\n";
551 OS << " switch(IntrinsicsToAttributesMap[id - ";
553 OS << "Intrinsic::num_intrinsics";
557 OS << " default: llvm_unreachable(\"Invalid attribute number\");\n";
558 for (UniqAttrMapTy::const_iterator I = UniqAttributes.begin(),
559 E = UniqAttributes.end(); I != E; ++I) {
560 OS << " case " << I->second << ":\n";
562 const CodeGenIntrinsic &intrinsic = *(I->first);
564 // Keep track of the number of attributes we're writing out.
565 unsigned numAttrs = 0;
567 // The argument attributes are alreadys sorted by argument index.
568 unsigned ai = 0, ae = intrinsic.ArgumentAttributes.size();
571 unsigned argNo = intrinsic.ArgumentAttributes[ai].first;
573 OS << " AttrVec.clear();\n";
576 switch (intrinsic.ArgumentAttributes[ai].second) {
577 case CodeGenIntrinsic::NoCapture:
578 OS << " AttrVec.push_back(Attributes::NoCapture);\n";
583 } while (ai != ae && intrinsic.ArgumentAttributes[ai].first == argNo);
585 OS << " AWI[" << numAttrs++ << "] = AttributeWithIndex::get("
586 << argNo+1 << ", AttrVec);\n";
590 ModRefKind modRef = getModRefKind(intrinsic);
592 if (!intrinsic.canThrow || modRef || intrinsic.isNoReturn) {
593 OS << " AttrVec.clear();\n";
595 if (!intrinsic.canThrow)
596 OS << " AttrVec.push_back(Attributes::NoUnwind);\n";
597 if (intrinsic.isNoReturn)
598 OS << " AttrVec.push_back(Attributes::NoReturn);\n";
601 case MRK_none: break;
603 OS << " AttrVec.push_back(Attributes::ReadOnly);\n";
606 OS << " AttrVec.push_back(Attributes::ReadNone);\n";
609 OS << " AWI[" << numAttrs++ << "] = AttributeWithIndex::get(~0, "
614 OS << " NumAttrs = " << numAttrs << ";\n";
617 OS << " return AttrListPtr();\n";
623 OS << " return AttrListPtr::get(ArrayRef<AttributeWithIndex>(AWI, "
626 OS << "#endif // GET_INTRINSIC_ATTRIBUTES\n\n";
629 /// EmitModRefBehavior - Determine intrinsic alias analysis mod/ref behavior.
630 void IntrinsicEmitter::
631 EmitModRefBehavior(const std::vector<CodeGenIntrinsic> &Ints, raw_ostream &OS){
632 OS << "// Determine intrinsic alias analysis mod/ref behavior.\n"
633 << "#ifdef GET_INTRINSIC_MODREF_BEHAVIOR\n"
634 << "assert(iid <= Intrinsic::" << Ints.back().EnumName << " && "
635 << "\"Unknown intrinsic.\");\n\n";
637 OS << "static const uint8_t IntrinsicModRefBehavior[] = {\n"
638 << " /* invalid */ UnknownModRefBehavior,\n";
639 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
640 OS << " /* " << TargetPrefix << Ints[i].EnumName << " */ ";
641 switch (Ints[i].ModRef) {
642 case CodeGenIntrinsic::NoMem:
643 OS << "DoesNotAccessMemory,\n";
645 case CodeGenIntrinsic::ReadArgMem:
646 OS << "OnlyReadsArgumentPointees,\n";
648 case CodeGenIntrinsic::ReadMem:
649 OS << "OnlyReadsMemory,\n";
651 case CodeGenIntrinsic::ReadWriteArgMem:
652 OS << "OnlyAccessesArgumentPointees,\n";
654 case CodeGenIntrinsic::ReadWriteMem:
655 OS << "UnknownModRefBehavior,\n";
660 << "return static_cast<ModRefBehavior>(IntrinsicModRefBehavior[iid]);\n"
661 << "#endif // GET_INTRINSIC_MODREF_BEHAVIOR\n\n";
664 /// EmitTargetBuiltins - All of the builtins in the specified map are for the
665 /// same target, and we already checked it.
666 static void EmitTargetBuiltins(const std::map<std::string, std::string> &BIM,
667 const std::string &TargetPrefix,
670 std::vector<StringMatcher::StringPair> Results;
672 for (std::map<std::string, std::string>::const_iterator I = BIM.begin(),
673 E = BIM.end(); I != E; ++I) {
674 std::string ResultCode =
675 "return " + TargetPrefix + "Intrinsic::" + I->second + ";";
676 Results.push_back(StringMatcher::StringPair(I->first, ResultCode));
679 StringMatcher("BuiltinName", Results, OS).Emit();
683 void IntrinsicEmitter::
684 EmitIntrinsicToGCCBuiltinMap(const std::vector<CodeGenIntrinsic> &Ints,
686 typedef std::map<std::string, std::map<std::string, std::string> > BIMTy;
688 for (unsigned i = 0, e = Ints.size(); i != e; ++i) {
689 if (!Ints[i].GCCBuiltinName.empty()) {
690 // Get the map for this target prefix.
691 std::map<std::string, std::string> &BIM =BuiltinMap[Ints[i].TargetPrefix];
693 if (!BIM.insert(std::make_pair(Ints[i].GCCBuiltinName,
694 Ints[i].EnumName)).second)
695 throw "Intrinsic '" + Ints[i].TheDef->getName() +
696 "': duplicate GCC builtin name!";
700 OS << "// Get the LLVM intrinsic that corresponds to a GCC builtin.\n";
701 OS << "// This is used by the C front-end. The GCC builtin name is passed\n";
702 OS << "// in as BuiltinName, and a target prefix (e.g. 'ppc') is passed\n";
703 OS << "// in as TargetPrefix. The result is assigned to 'IntrinsicID'.\n";
704 OS << "#ifdef GET_LLVM_INTRINSIC_FOR_GCC_BUILTIN\n";
707 OS << "static " << TargetPrefix << "Intrinsic::ID "
708 << "getIntrinsicForGCCBuiltin(const char "
709 << "*TargetPrefixStr, const char *BuiltinNameStr) {\n";
711 OS << "Intrinsic::ID Intrinsic::getIntrinsicForGCCBuiltin(const char "
712 << "*TargetPrefixStr, const char *BuiltinNameStr) {\n";
715 OS << " StringRef BuiltinName(BuiltinNameStr);\n";
716 OS << " StringRef TargetPrefix(TargetPrefixStr);\n\n";
718 // Note: this could emit significantly better code if we cared.
719 for (BIMTy::iterator I = BuiltinMap.begin(), E = BuiltinMap.end();I != E;++I){
721 if (!I->first.empty())
722 OS << "if (TargetPrefix == \"" << I->first << "\") ";
724 OS << "/* Target Independent Builtins */ ";
727 // Emit the comparisons for this target prefix.
728 EmitTargetBuiltins(I->second, TargetPrefix, OS);
732 if (!TargetPrefix.empty())
733 OS << "(" << TargetPrefix << "Intrinsic::ID)";
734 OS << "Intrinsic::not_intrinsic;\n";
741 void EmitIntrinsics(RecordKeeper &RK, raw_ostream &OS, bool TargetOnly = false) {
742 IntrinsicEmitter(RK, TargetOnly).run(OS);
745 } // End llvm namespace