ItaniumMangle.cpp source code [clang_source_code/lib/AST/ItaniumMangle.cpp]

1	//===--- ItaniumMangle.cpp - Itanium C++ Name Mangling ----------- C++ --===//
2	//
3	// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4	// See https://llvm.org/LICENSE.txt for license information.
5	// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6	//
7	//===----------------------------------------------------------------------===//
8	//
9	// Implements C++ name mangling according to the Itanium C++ ABI,
10	// which is used in GCC 3.2 and newer (and many compilers that are
11	// ABI-compatible with GCC):
12	//
13	// http://itanium-cxx-abi.github.io/cxx-abi/abi.html#mangling
14	//
15	//===----------------------------------------------------------------------===//
16	#include "clang/AST/Mangle.h"
17	#include "clang/AST/ASTContext.h"
18	#include "clang/AST/Attr.h"
19	#include "clang/AST/Decl.h"
20	#include "clang/AST/DeclCXX.h"
21	#include "clang/AST/DeclObjC.h"
22	#include "clang/AST/DeclOpenMP.h"
23	#include "clang/AST/DeclTemplate.h"
24	#include "clang/AST/Expr.h"
25	#include "clang/AST/ExprCXX.h"
26	#include "clang/AST/ExprObjC.h"
27	#include "clang/AST/TypeLoc.h"
28	#include "clang/Basic/ABI.h"
29	#include "clang/Basic/SourceManager.h"
30	#include "clang/Basic/TargetInfo.h"
31	#include "llvm/ADT/StringExtras.h"
32	#include "llvm/Support/ErrorHandling.h"
33	#include "llvm/Support/raw_ostream.h"
34
35	using namespace clang;
36
37	namespace {
38
39	/// Retrieve the declaration context that should be used when mangling the given
40	/// declaration.
41	static const DeclContext getEffectiveDeclContext(const Decl D) {
42	// The ABI assumes that lambda closure types that occur within
43	// default arguments live in the context of the function. However, due to
44	// the way in which Clang parses and creates function declarations, this is
45	// not the case: the lambda closure type ends up living in the context
46	// where the function itself resides, because the function declaration itself
47	// had not yet been created. Fix the context here.
48	if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(D)) {
49	if (RD->isLambda())
50	if (ParmVarDecl *ContextParam
51	= dyn_cast_or_null<ParmVarDecl>(RD->getLambdaContextDecl()))
52	return ContextParam->getDeclContext();
53	}
54
55	// Perform the same check for block literals.
56	if (const BlockDecl *BD = dyn_cast<BlockDecl>(D)) {
57	if (ParmVarDecl *ContextParam
58	= dyn_cast_or_null<ParmVarDecl>(BD->getBlockManglingContextDecl()))
59	return ContextParam->getDeclContext();
60	}
61
62	const DeclContext *DC = D->getDeclContext();
63	if (isa<CapturedDecl>(DC) \|\| isa<OMPDeclareReductionDecl>(DC) \|\|
64	isa<OMPDeclareMapperDecl>(DC)) {
65	return getEffectiveDeclContext(cast<Decl>(DC));
66	}
67
68	if (const auto *VD = dyn_cast<VarDecl>(D))
69	if (VD->isExternC())
70	return VD->getASTContext().getTranslationUnitDecl();
71
72	if (const auto *FD = dyn_cast<FunctionDecl>(D))
73	if (FD->isExternC())
74	return FD->getASTContext().getTranslationUnitDecl();
75
76	return DC->getRedeclContext();
77	}
78
79	static const DeclContext getEffectiveParentContext(const DeclContext DC) {
80	return getEffectiveDeclContext(cast<Decl>(DC));
81	}
82
83	static bool isLocalContainerContext(const DeclContext *DC) {
84	return isa<FunctionDecl>(DC) \|\| isa<ObjCMethodDecl>(DC) \|\| isa<BlockDecl>(DC);
85	}
86
87	static const RecordDecl GetLocalClassDecl(const Decl D) {
88	const DeclContext *DC = getEffectiveDeclContext(D);
89	while (!DC->isNamespace() && !DC->isTranslationUnit()) {
90	if (isLocalContainerContext(DC))
91	return dyn_cast<RecordDecl>(D);
92	D = cast<Decl>(DC);
93	DC = getEffectiveDeclContext(D);
94	}
95	return nullptr;
96	}
97
98	static const FunctionDecl getStructor(const FunctionDecl fn) {
99	if (const FunctionTemplateDecl *ftd = fn->getPrimaryTemplate())
100	return ftd->getTemplatedDecl();
101
102	return fn;
103	}
104
105	static const NamedDecl getStructor(const NamedDecl decl) {
106	const FunctionDecl *fn = dyn_cast_or_null<FunctionDecl>(decl);
107	return (fn ? getStructor(fn) : decl);
108	}
109
110	static bool isLambda(const NamedDecl *ND) {
111	const CXXRecordDecl *Record = dyn_cast<CXXRecordDecl>(ND);
112	if (!Record)
113	return false;
114
115	return Record->isLambda();
116	}
117
118	static const unsigned UnknownArity = ~0U;
119
120	class ItaniumMangleContextImpl : public ItaniumMangleContext {
121	typedef std::pair<const DeclContext, IdentifierInfo> DiscriminatorKeyTy;
122	llvm::DenseMap<DiscriminatorKeyTy, unsigned> Discriminator;
123	llvm::DenseMap<const NamedDecl*, unsigned> Uniquifier;
124
125	public:
126	explicit ItaniumMangleContextImpl(ASTContext &Context,
127	DiagnosticsEngine &Diags)
128	: ItaniumMangleContext(Context, Diags) {}
129
130	/// @name Mangler Entry Points
131	/// @{
132
133	bool shouldMangleCXXName(const NamedDecl *D) override;
134	bool shouldMangleStringLiteral(const StringLiteral *) override {
135	return false;
136	}
137	void mangleCXXName(const NamedDecl *D, raw_ostream &) override;
138	void mangleThunk(const CXXMethodDecl *MD, const ThunkInfo &Thunk,
139	raw_ostream &) override;
140	void mangleCXXDtorThunk(const CXXDestructorDecl *DD, CXXDtorType Type,
141	const ThisAdjustment &ThisAdjustment,
142	raw_ostream &) override;
143	void mangleReferenceTemporary(const VarDecl *D, unsigned ManglingNumber,
144	raw_ostream &) override;
145	void mangleCXXVTable(const CXXRecordDecl *RD, raw_ostream &) override;
146	void mangleCXXVTT(const CXXRecordDecl *RD, raw_ostream &) override;
147	void mangleCXXCtorVTable(const CXXRecordDecl *RD, int64_t Offset,
148	const CXXRecordDecl *Type, raw_ostream &) override;
149	void mangleCXXRTTI(QualType T, raw_ostream &) override;
150	void mangleCXXRTTIName(QualType T, raw_ostream &) override;
151	void mangleTypeName(QualType T, raw_ostream &) override;
152	void mangleCXXCtor(const CXXConstructorDecl *D, CXXCtorType Type,
153	raw_ostream &) override;
154	void mangleCXXDtor(const CXXDestructorDecl *D, CXXDtorType Type,
155	raw_ostream &) override;
156
157	void mangleCXXCtorComdat(const CXXConstructorDecl *D, raw_ostream &) override;
158	void mangleCXXDtorComdat(const CXXDestructorDecl *D, raw_ostream &) override;
159	void mangleStaticGuardVariable(const VarDecl *D, raw_ostream &) override;
160	void mangleDynamicInitializer(const VarDecl *D, raw_ostream &Out) override;
161	void mangleDynamicAtExitDestructor(const VarDecl *D,
162	raw_ostream &Out) override;
163	void mangleSEHFilterExpression(const NamedDecl *EnclosingDecl,
164	raw_ostream &Out) override;
165	void mangleSEHFinallyBlock(const NamedDecl *EnclosingDecl,
166	raw_ostream &Out) override;
167	void mangleItaniumThreadLocalInit(const VarDecl *D, raw_ostream &) override;
168	void mangleItaniumThreadLocalWrapper(const VarDecl *D,
169	raw_ostream &) override;
170
171	void mangleStringLiteral(const StringLiteral *, raw_ostream &) override;
172
173	bool getNextDiscriminator(const NamedDecl *ND, unsigned &disc) {
174	// Lambda closure types are already numbered.
175	if (isLambda(ND))
176	return false;
177
178	// Anonymous tags are already numbered.
179	if (const TagDecl *Tag = dyn_cast<TagDecl>(ND)) {
180	if (Tag->getName().empty() && !Tag->getTypedefNameForAnonDecl())
181	return false;
182	}
183
184	// Use the canonical number for externally visible decls.
185	if (ND->isExternallyVisible()) {
186	unsigned discriminator = getASTContext().getManglingNumber(ND);
187	if (discriminator == 1)
188	return false;
189	disc = discriminator - 2;
190	return true;
191	}
192
193	// Make up a reasonable number for internal decls.
194	unsigned &discriminator = Uniquifier[ND];
195	if (!discriminator) {
196	const DeclContext *DC = getEffectiveDeclContext(ND);
197	discriminator = ++Discriminator[std::make_pair(DC, ND->getIdentifier())];
198	}
199	if (discriminator == 1)
200	return false;
201	disc = discriminator-2;
202	return true;
203	}
204	/// @}
205	};
206
207	/// Manage the mangling of a single name.
208	class CXXNameMangler {
209	ItaniumMangleContextImpl &Context;
210	raw_ostream &Out;
211	bool NullOut = false;
212	/// In the "DisableDerivedAbiTags" mode derived ABI tags are not calculated.
213	/// This mode is used when mangler creates another mangler recursively to
214	/// calculate ABI tags for the function return value or the variable type.
215	/// Also it is required to avoid infinite recursion in some cases.
216	bool DisableDerivedAbiTags = false;
217
218	/// The "structor" is the top-level declaration being mangled, if
219	/// that's not a template specialization; otherwise it's the pattern
220	/// for that specialization.
221	const NamedDecl *Structor;
222	unsigned StructorType;
223
224	/// The next substitution sequence number.
225	unsigned SeqID;
226
227	class FunctionTypeDepthState {
228	unsigned Bits;
229
230	enum { InResultTypeMask = 1 };
231
232	public:
233	FunctionTypeDepthState() : Bits(0) {}
234
235	/// The number of function types we're inside.
236	unsigned getDepth() const {
237	return Bits >> 1;
238	}
239
240	/// True if we're in the return type of the innermost function type.
241	bool isInResultType() const {
242	return Bits & InResultTypeMask;
243	}
244
245	FunctionTypeDepthState push() {
246	FunctionTypeDepthState tmp = *this;
247	Bits = (Bits & ~InResultTypeMask) + 2;
248	return tmp;
249	}
250
251	void enterResultType() {
252	Bits \|= InResultTypeMask;
253	}
254
255	void leaveResultType() {
256	Bits &= ~InResultTypeMask;
257	}
258
259	void pop(FunctionTypeDepthState saved) {
260	assert(getDepth() == saved.getDepth() + 1);
261	Bits = saved.Bits;
262	}
263
264	} FunctionTypeDepth;
265
266	// abi_tag is a gcc attribute, taking one or more strings called "tags".
267	// The goal is to annotate against which version of a library an object was
268	// built and to be able to provide backwards compatibility ("dual abi").
269	// For more information see docs/ItaniumMangleAbiTags.rst.
270	typedef SmallVector<StringRef, 4> AbiTagList;
271
272	// State to gather all implicit and explicit tags used in a mangled name.
273	// Must always have an instance of this while emitting any name to keep
274	// track.
275	class AbiTagState final {
276	public:
277	explicit AbiTagState(AbiTagState *&Head) : LinkHead(Head) {
278	Parent = LinkHead;
279	LinkHead = this;
280	}
281
282	// No copy, no move.
283	AbiTagState(const AbiTagState &) = delete;
284	AbiTagState &operator=(const AbiTagState &) = delete;
285
286	~AbiTagState() { pop(); }
287
288	void write(raw_ostream &Out, const NamedDecl *ND,
289	const AbiTagList *AdditionalAbiTags) {
290	ND = cast<NamedDecl>(ND->getCanonicalDecl());
291	if (!isa<FunctionDecl>(ND) && !isa<VarDecl>(ND)) {
292	(0) . __assert_fail ("!AdditionalAbiTags && \"only function and variables need a list of additional abi tags\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 294, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(
293	(0) . __assert_fail ("!AdditionalAbiTags && \"only function and variables need a list of additional abi tags\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 294, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> !AdditionalAbiTags &&
294	(0) . __assert_fail ("!AdditionalAbiTags && \"only function and variables need a list of additional abi tags\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 294, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "only function and variables need a list of additional abi tags");
295	if (const auto *NS = dyn_cast<NamespaceDecl>(ND)) {
296	if (const auto *AbiTag = NS->getAttr<AbiTagAttr>()) {
297	UsedAbiTags.insert(UsedAbiTags.end(), AbiTag->tags().begin(),
298	AbiTag->tags().end());
299	}
300	// Don't emit abi tags for namespaces.
301	return;
302	}
303	}
304
305	AbiTagList TagList;
306	if (const auto *AbiTag = ND->getAttr<AbiTagAttr>()) {
307	UsedAbiTags.insert(UsedAbiTags.end(), AbiTag->tags().begin(),
308	AbiTag->tags().end());
309	TagList.insert(TagList.end(), AbiTag->tags().begin(),
310	AbiTag->tags().end());
311	}
312
313	if (AdditionalAbiTags) {
314	UsedAbiTags.insert(UsedAbiTags.end(), AdditionalAbiTags->begin(),
315	AdditionalAbiTags->end());
316	TagList.insert(TagList.end(), AdditionalAbiTags->begin(),
317	AdditionalAbiTags->end());
318	}
319
320	llvm::sort(TagList);
321	TagList.erase(std::unique(TagList.begin(), TagList.end()), TagList.end());
322
323	writeSortedUniqueAbiTags(Out, TagList);
324	}
325
326	const AbiTagList &getUsedAbiTags() const { return UsedAbiTags; }
327	void setUsedAbiTags(const AbiTagList &AbiTags) {
328	UsedAbiTags = AbiTags;
329	}
330
331	const AbiTagList &getEmittedAbiTags() const {
332	return EmittedAbiTags;
333	}
334
335	const AbiTagList &getSortedUniqueUsedAbiTags() {
336	llvm::sort(UsedAbiTags);
337	UsedAbiTags.erase(std::unique(UsedAbiTags.begin(), UsedAbiTags.end()),
338	UsedAbiTags.end());
339	return UsedAbiTags;
340	}
341
342	private:
343	//! All abi tags used implicitly or explicitly.
344	AbiTagList UsedAbiTags;
345	//! All explicit abi tags (i.e. not from namespace).
346	AbiTagList EmittedAbiTags;
347
348	AbiTagState *&LinkHead;
349	AbiTagState *Parent = nullptr;
350
351	void pop() {
352	(0) . __assert_fail ("LinkHead == this && \"abi tag link head must point to us on destruction\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 353, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(LinkHead == this &&
353	(0) . __assert_fail ("LinkHead == this && \"abi tag link head must point to us on destruction\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 353, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "abi tag link head must point to us on destruction");
354	if (Parent) {
355	Parent->UsedAbiTags.insert(Parent->UsedAbiTags.end(),
356	UsedAbiTags.begin(), UsedAbiTags.end());
357	Parent->EmittedAbiTags.insert(Parent->EmittedAbiTags.end(),
358	EmittedAbiTags.begin(),
359	EmittedAbiTags.end());
360	}
361	LinkHead = Parent;
362	}
363
364	void writeSortedUniqueAbiTags(raw_ostream &Out, const AbiTagList &AbiTags) {
365	for (const auto &Tag : AbiTags) {
366	EmittedAbiTags.push_back(Tag);
367	Out << "B";
368	Out << Tag.size();
369	Out << Tag;
370	}
371	}
372	};
373
374	AbiTagState *AbiTags = nullptr;
375	AbiTagState AbiTagsRoot;
376
377	llvm::DenseMap<uintptr_t, unsigned> Substitutions;
378	llvm::DenseMap<StringRef, unsigned> ModuleSubstitutions;
379
380	ASTContext &getASTContext() const { return Context.getASTContext(); }
381
382	public:
383	CXXNameMangler(ItaniumMangleContextImpl &C, raw_ostream &Out_,
384	const NamedDecl *D = nullptr, bool NullOut_ = false)
385	: Context(C), Out(Out_), NullOut(NullOut_), Structor(getStructor(D)),
386	StructorType(0), SeqID(0), AbiTagsRoot(AbiTags) {
387	// These can't be mangled without a ctor type or dtor type.
388	(D) && !isa(D))", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 389, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(!D \|\| (!isa<CXXDestructorDecl>(D) &&
389	(D) && !isa(D))", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 389, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> !isa<CXXConstructorDecl>(D)));
390	}
391	CXXNameMangler(ItaniumMangleContextImpl &C, raw_ostream &Out_,
392	const CXXConstructorDecl *D, CXXCtorType Type)
393	: Context(C), Out(Out_), Structor(getStructor(D)), StructorType(Type),
394	SeqID(0), AbiTagsRoot(AbiTags) { }
395	CXXNameMangler(ItaniumMangleContextImpl &C, raw_ostream &Out_,
396	const CXXDestructorDecl *D, CXXDtorType Type)
397	: Context(C), Out(Out_), Structor(getStructor(D)), StructorType(Type),
398	SeqID(0), AbiTagsRoot(AbiTags) { }
399
400	CXXNameMangler(CXXNameMangler &Outer, raw_ostream &Out_)
401	: Context(Outer.Context), Out(Out_), NullOut(false),
402	Structor(Outer.Structor), StructorType(Outer.StructorType),
403	SeqID(Outer.SeqID), FunctionTypeDepth(Outer.FunctionTypeDepth),
404	AbiTagsRoot(AbiTags), Substitutions(Outer.Substitutions) {}
405
406	CXXNameMangler(CXXNameMangler &Outer, llvm::raw_null_ostream &Out_)
407	: Context(Outer.Context), Out(Out_), NullOut(true),
408	Structor(Outer.Structor), StructorType(Outer.StructorType),
409	SeqID(Outer.SeqID), FunctionTypeDepth(Outer.FunctionTypeDepth),
410	AbiTagsRoot(AbiTags), Substitutions(Outer.Substitutions) {}
411
412	raw_ostream &getStream() { return Out; }
413
414	void disableDerivedAbiTags() { DisableDerivedAbiTags = true; }
415	static bool shouldHaveAbiTags(ItaniumMangleContextImpl &C, const VarDecl *VD);
416
417	void mangle(const NamedDecl *D);
418	void mangleCallOffset(int64_t NonVirtual, int64_t Virtual);
419	void mangleNumber(const llvm::APSInt &I);
420	void mangleNumber(int64_t Number);
421	void mangleFloat(const llvm::APFloat &F);
422	void mangleFunctionEncoding(const FunctionDecl *FD);
423	void mangleSeqID(unsigned SeqID);
424	void mangleName(const NamedDecl *ND);
425	void mangleType(QualType T);
426	void mangleNameOrStandardSubstitution(const NamedDecl *ND);
427
428	private:
429
430	bool mangleSubstitution(const NamedDecl *ND);
431	bool mangleSubstitution(QualType T);
432	bool mangleSubstitution(TemplateName Template);
433	bool mangleSubstitution(uintptr_t Ptr);
434
435	void mangleExistingSubstitution(TemplateName name);
436
437	bool mangleStandardSubstitution(const NamedDecl *ND);
438
439	void addSubstitution(const NamedDecl *ND) {
440	ND = cast<NamedDecl>(ND->getCanonicalDecl());
441
442	addSubstitution(reinterpret_cast<uintptr_t>(ND));
443	}
444	void addSubstitution(QualType T);
445	void addSubstitution(TemplateName Template);
446	void addSubstitution(uintptr_t Ptr);
447	// Destructive copy substitutions from other mangler.
448	void extendSubstitutions(CXXNameMangler* Other);
449
450	void mangleUnresolvedPrefix(NestedNameSpecifier *qualifier,
451	bool recursive = false);
452	void mangleUnresolvedName(NestedNameSpecifier *qualifier,
453	DeclarationName name,
454	const TemplateArgumentLoc *TemplateArgs,
455	unsigned NumTemplateArgs,
456	unsigned KnownArity = UnknownArity);
457
458	void mangleFunctionEncodingBareType(const FunctionDecl *FD);
459
460	void mangleNameWithAbiTags(const NamedDecl *ND,
461	const AbiTagList *AdditionalAbiTags);
462	void mangleModuleName(const Module *M);
463	void mangleModuleNamePrefix(StringRef Name);
464	void mangleTemplateName(const TemplateDecl *TD,
465	const TemplateArgument *TemplateArgs,
466	unsigned NumTemplateArgs);
467	void mangleUnqualifiedName(const NamedDecl *ND,
468	const AbiTagList *AdditionalAbiTags) {
469	mangleUnqualifiedName(ND, ND->getDeclName(), UnknownArity,
470	AdditionalAbiTags);
471	}
472	void mangleUnqualifiedName(const NamedDecl *ND, DeclarationName Name,
473	unsigned KnownArity,
474	const AbiTagList *AdditionalAbiTags);
475	void mangleUnscopedName(const NamedDecl *ND,
476	const AbiTagList *AdditionalAbiTags);
477	void mangleUnscopedTemplateName(const TemplateDecl *ND,
478	const AbiTagList *AdditionalAbiTags);
479	void mangleUnscopedTemplateName(TemplateName,
480	const AbiTagList *AdditionalAbiTags);
481	void mangleSourceName(const IdentifierInfo *II);
482	void mangleRegCallName(const IdentifierInfo *II);
483	void mangleSourceNameWithAbiTags(
484	const NamedDecl ND, const AbiTagList AdditionalAbiTags = nullptr);
485	void mangleLocalName(const Decl *D,
486	const AbiTagList *AdditionalAbiTags);
487	void mangleBlockForPrefix(const BlockDecl *Block);
488	void mangleUnqualifiedBlock(const BlockDecl *Block);
489	void mangleLambda(const CXXRecordDecl *Lambda);
490	void mangleNestedName(const NamedDecl ND, const DeclContext DC,
491	const AbiTagList *AdditionalAbiTags,
492	bool NoFunction=false);
493	void mangleNestedName(const TemplateDecl *TD,
494	const TemplateArgument *TemplateArgs,
495	unsigned NumTemplateArgs);
496	void manglePrefix(NestedNameSpecifier *qualifier);
497	void manglePrefix(const DeclContext *DC, bool NoFunction=false);
498	void manglePrefix(QualType type);
499	void mangleTemplatePrefix(const TemplateDecl *ND, bool NoFunction=false);
500	void mangleTemplatePrefix(TemplateName Template);
501	bool mangleUnresolvedTypeOrSimpleId(QualType DestroyedType,
502	StringRef Prefix = "");
503	void mangleOperatorName(DeclarationName Name, unsigned Arity);
504	void mangleOperatorName(OverloadedOperatorKind OO, unsigned Arity);
505	void mangleVendorQualifier(StringRef qualifier);
506	void mangleQualifiers(Qualifiers Quals, const DependentAddressSpaceType *DAST = nullptr);
507	void mangleRefQualifier(RefQualifierKind RefQualifier);
508
509	void mangleObjCMethodName(const ObjCMethodDecl *MD);
510
511	// Declare manglers for every type class.
512	#define ABSTRACT_TYPE(CLASS, PARENT)
513	#define NON_CANONICAL_TYPE(CLASS, PARENT)
514	#define TYPE(CLASS, PARENT) void mangleType(const CLASS##Type *T);
515	#include "clang/AST/TypeNodes.def"
516
517	void mangleType(const TagType*);
518	void mangleType(TemplateName);
519	static StringRef getCallingConvQualifierName(CallingConv CC);
520	void mangleExtParameterInfo(FunctionProtoType::ExtParameterInfo info);
521	void mangleExtFunctionInfo(const FunctionType *T);
522	void mangleBareFunctionType(const FunctionProtoType *T, bool MangleReturnType,
523	const FunctionDecl *FD = nullptr);
524	void mangleNeonVectorType(const VectorType *T);
525	void mangleNeonVectorType(const DependentVectorType *T);
526	void mangleAArch64NeonVectorType(const VectorType *T);
527	void mangleAArch64NeonVectorType(const DependentVectorType *T);
528
529	void mangleIntegerLiteral(QualType T, const llvm::APSInt &Value);
530	void mangleMemberExprBase(const Expr *base, bool isArrow);
531	void mangleMemberExpr(const Expr *base, bool isArrow,
532	NestedNameSpecifier *qualifier,
533	NamedDecl *firstQualifierLookup,
534	DeclarationName name,
535	const TemplateArgumentLoc *TemplateArgs,
536	unsigned NumTemplateArgs,
537	unsigned knownArity);
538	void mangleCastExpression(const Expr *E, StringRef CastEncoding);
539	void mangleInitListElements(const InitListExpr *InitList);
540	void mangleExpression(const Expr *E, unsigned Arity = UnknownArity);
541	void mangleCXXCtorType(CXXCtorType T, const CXXRecordDecl *InheritedFrom);
542	void mangleCXXDtorType(CXXDtorType T);
543
544	void mangleTemplateArgs(const TemplateArgumentLoc *TemplateArgs,
545	unsigned NumTemplateArgs);
546	void mangleTemplateArgs(const TemplateArgument *TemplateArgs,
547	unsigned NumTemplateArgs);
548	void mangleTemplateArgs(const TemplateArgumentList &AL);
549	void mangleTemplateArg(TemplateArgument A);
550
551	void mangleTemplateParameter(unsigned Index);
552
553	void mangleFunctionParam(const ParmVarDecl *parm);
554
555	void writeAbiTags(const NamedDecl *ND,
556	const AbiTagList *AdditionalAbiTags);
557
558	// Returns sorted unique list of ABI tags.
559	AbiTagList makeFunctionReturnTypeTags(const FunctionDecl *FD);
560	// Returns sorted unique list of ABI tags.
561	AbiTagList makeVariableTypeTags(const VarDecl *VD);
562	};
563
564	}
565
566	bool ItaniumMangleContextImpl::shouldMangleCXXName(const NamedDecl *D) {
567	const FunctionDecl *FD = dyn_cast<FunctionDecl>(D);
568	if (FD) {
569	LanguageLinkage L = FD->getLanguageLinkage();
570	// Overloadable functions need mangling.
571	if (FD->hasAttr<OverloadableAttr>())
572	return true;
573
574	// "main" is not mangled.
575	if (FD->isMain())
576	return false;
577
578	// The Windows ABI expects that we would never mangle "typical"
579	// user-defined entry points regardless of visibility or freestanding-ness.
580	//
581	// N.B. This is distinct from asking about "main". "main" has a lot of
582	// special rules associated with it in the standard while these
583	// user-defined entry points are outside of the purview of the standard.
584	// For example, there can be only one definition for "main" in a standards
585	// compliant program; however nothing forbids the existence of wmain and
586	// WinMain in the same translation unit.
587	if (FD->isMSVCRTEntryPoint())
588	return false;
589
590	// C++ functions and those whose names are not a simple identifier need
591	// mangling.
592	if (!FD->getDeclName().isIdentifier() \|\| L == CXXLanguageLinkage)
593	return true;
594
595	// C functions are not mangled.
596	if (L == CLanguageLinkage)
597	return false;
598	}
599
600	// Otherwise, no mangling is done outside C++ mode.
601	if (!getASTContext().getLangOpts().CPlusPlus)
602	return false;
603
604	const VarDecl *VD = dyn_cast<VarDecl>(D);
605	if (VD && !isa<DecompositionDecl>(D)) {
606	// C variables are not mangled.
607	if (VD->isExternC())
608	return false;
609
610	// Variables at global scope with non-internal linkage are not mangled
611	const DeclContext *DC = getEffectiveDeclContext(D);
612	// Check for extern variable declared locally.
613	if (DC->isFunctionOrMethod() && D->hasLinkage())
614	while (!DC->isNamespace() && !DC->isTranslationUnit())
615	DC = getEffectiveParentContext(DC);
616	if (DC->isTranslationUnit() && D->getFormalLinkage() != InternalLinkage &&
617	!CXXNameMangler::shouldHaveAbiTags(*this, VD) &&
618	!isa<VarTemplateSpecializationDecl>(D))
619	return false;
620	}
621
622	return true;
623	}
624
625	void CXXNameMangler::writeAbiTags(const NamedDecl *ND,
626	const AbiTagList *AdditionalAbiTags) {
627	(0) . __assert_fail ("AbiTags && \"require AbiTagState\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 627, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(AbiTags && "require AbiTagState");
628	AbiTags->write(Out, ND, DisableDerivedAbiTags ? nullptr : AdditionalAbiTags);
629	}
630
631	void CXXNameMangler::mangleSourceNameWithAbiTags(
632	const NamedDecl ND, const AbiTagList AdditionalAbiTags) {
633	mangleSourceName(ND->getIdentifier());
634	writeAbiTags(ND, AdditionalAbiTags);
635	}
636
637	void CXXNameMangler::mangle(const NamedDecl *D) {
638	// <mangled-name> ::= _Z <encoding>
639	// ::= <data name>
640	// ::= <special-name>
641	Out << "_Z";
642	if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D))
643	mangleFunctionEncoding(FD);
644	else if (const VarDecl *VD = dyn_cast<VarDecl>(D))
645	mangleName(VD);
646	else if (const IndirectFieldDecl *IFD = dyn_cast<IndirectFieldDecl>(D))
647	mangleName(IFD->getAnonField());
648	else
649	mangleName(cast<FieldDecl>(D));
650	}
651
652	void CXXNameMangler::mangleFunctionEncoding(const FunctionDecl *FD) {
653	// <encoding> ::= <function name> <bare-function-type>
654
655	// Don't mangle in the type if this isn't a decl we should typically mangle.
656	if (!Context.shouldMangleDeclName(FD)) {
657	mangleName(FD);
658	return;
659	}
660
661	AbiTagList ReturnTypeAbiTags = makeFunctionReturnTypeTags(FD);
662	if (ReturnTypeAbiTags.empty()) {
663	// There are no tags for return type, the simplest case.
664	mangleName(FD);
665	mangleFunctionEncodingBareType(FD);
666	return;
667	}
668
669	// Mangle function name and encoding to temporary buffer.
670	// We have to output name and encoding to the same mangler to get the same
671	// substitution as it will be in final mangling.
672	SmallString<256> FunctionEncodingBuf;
673	llvm::raw_svector_ostream FunctionEncodingStream(FunctionEncodingBuf);
674	CXXNameMangler FunctionEncodingMangler(*this, FunctionEncodingStream);
675	// Output name of the function.
676	FunctionEncodingMangler.disableDerivedAbiTags();
677	FunctionEncodingMangler.mangleNameWithAbiTags(FD, nullptr);
678
679	// Remember length of the function name in the buffer.
680	size_t EncodingPositionStart = FunctionEncodingStream.str().size();
681	FunctionEncodingMangler.mangleFunctionEncodingBareType(FD);
682
683	// Get tags from return type that are not present in function name or
684	// encoding.
685	const AbiTagList &UsedAbiTags =
686	FunctionEncodingMangler.AbiTagsRoot.getSortedUniqueUsedAbiTags();
687	AbiTagList AdditionalAbiTags(ReturnTypeAbiTags.size());
688	AdditionalAbiTags.erase(
689	std::set_difference(ReturnTypeAbiTags.begin(), ReturnTypeAbiTags.end(),
690	UsedAbiTags.begin(), UsedAbiTags.end(),
691	AdditionalAbiTags.begin()),
692	AdditionalAbiTags.end());
693
694	// Output name with implicit tags and function encoding from temporary buffer.
695	mangleNameWithAbiTags(FD, &AdditionalAbiTags);
696	Out << FunctionEncodingStream.str().substr(EncodingPositionStart);
697
698	// Function encoding could create new substitutions so we have to add
699	// temp mangled substitutions to main mangler.
700	extendSubstitutions(&FunctionEncodingMangler);
701	}
702
703	void CXXNameMangler::mangleFunctionEncodingBareType(const FunctionDecl *FD) {
704	if (FD->hasAttr<EnableIfAttr>()) {
705	FunctionTypeDepthState Saved = FunctionTypeDepth.push();
706	Out << "Ua9enable_ifI";
707	for (AttrVec::const_iterator I = FD->getAttrs().begin(),
708	E = FD->getAttrs().end();
709	I != E; ++I) {
710	EnableIfAttr EIA = dyn_cast<EnableIfAttr>(I);
711	if (!EIA)
712	continue;
713	Out << 'X';
714	mangleExpression(EIA->getCond());
715	Out << 'E';
716	}
717	Out << 'E';
718	FunctionTypeDepth.pop(Saved);
719	}
720
721	// When mangling an inheriting constructor, the bare function type used is
722	// that of the inherited constructor.
723	if (auto *CD = dyn_cast<CXXConstructorDecl>(FD))
724	if (auto Inherited = CD->getInheritedConstructor())
725	FD = Inherited.getConstructor();
726
727	// Whether the mangling of a function type includes the return type depends on
728	// the context and the nature of the function. The rules for deciding whether
729	// the return type is included are:
730	//
731	// 1. Template functions (names or types) have return types encoded, with
732	// the exceptions listed below.
733	// 2. Function types not appearing as part of a function name mangling,
734	// e.g. parameters, pointer types, etc., have return type encoded, with the
735	// exceptions listed below.
736	// 3. Non-template function names do not have return types encoded.
737	//
738	// The exceptions mentioned in (1) and (2) above, for which the return type is
739	// never included, are
740	// 1. Constructors.
741	// 2. Destructors.
742	// 3. Conversion operator functions, e.g. operator int.
743	bool MangleReturnType = false;
744	if (FunctionTemplateDecl *PrimaryTemplate = FD->getPrimaryTemplate()) {
745	if (!(isa<CXXConstructorDecl>(FD) \|\| isa<CXXDestructorDecl>(FD) \|\|
746	isa<CXXConversionDecl>(FD)))
747	MangleReturnType = true;
748
749	// Mangle the type of the primary template.
750	FD = PrimaryTemplate->getTemplatedDecl();
751	}
752
753	mangleBareFunctionType(FD->getType()->castAs<FunctionProtoType>(),
754	MangleReturnType, FD);
755	}
756
757	static const DeclContext IgnoreLinkageSpecDecls(const DeclContext DC) {
758	while (isa<LinkageSpecDecl>(DC)) {
759	DC = getEffectiveParentContext(DC);
760	}
761
762	return DC;
763	}
764
765	/// Return whether a given namespace is the 'std' namespace.
766	static bool isStd(const NamespaceDecl *NS) {
767	if (!IgnoreLinkageSpecDecls(getEffectiveParentContext(NS))
768	->isTranslationUnit())
769	return false;
770
771	const IdentifierInfo *II = NS->getOriginalNamespace()->getIdentifier();
772	return II && II->isStr("std");
773	}
774
775	// isStdNamespace - Return whether a given decl context is a toplevel 'std'
776	// namespace.
777	static bool isStdNamespace(const DeclContext *DC) {
778	if (!DC->isNamespace())
779	return false;
780
781	return isStd(cast<NamespaceDecl>(DC));
782	}
783
784	static const TemplateDecl *
785	isTemplate(const NamedDecl ND, const TemplateArgumentList &TemplateArgs) {
786	// Check if we have a function template.
787	if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) {
788	if (const TemplateDecl *TD = FD->getPrimaryTemplate()) {
789	TemplateArgs = FD->getTemplateSpecializationArgs();
790	return TD;
791	}
792	}
793
794	// Check if we have a class template.
795	if (const ClassTemplateSpecializationDecl *Spec =
796	dyn_cast<ClassTemplateSpecializationDecl>(ND)) {
797	TemplateArgs = &Spec->getTemplateArgs();
798	return Spec->getSpecializedTemplate();
799	}
800
801	// Check if we have a variable template.
802	if (const VarTemplateSpecializationDecl *Spec =
803	dyn_cast<VarTemplateSpecializationDecl>(ND)) {
804	TemplateArgs = &Spec->getTemplateArgs();
805	return Spec->getSpecializedTemplate();
806	}
807
808	return nullptr;
809	}
810
811	void CXXNameMangler::mangleName(const NamedDecl *ND) {
812	if (const VarDecl *VD = dyn_cast<VarDecl>(ND)) {
813	// Variables should have implicit tags from its type.
814	AbiTagList VariableTypeAbiTags = makeVariableTypeTags(VD);
815	if (VariableTypeAbiTags.empty()) {
816	// Simple case no variable type tags.
817	mangleNameWithAbiTags(VD, nullptr);
818	return;
819	}
820
821	// Mangle variable name to null stream to collect tags.
822	llvm::raw_null_ostream NullOutStream;
823	CXXNameMangler VariableNameMangler(*this, NullOutStream);
824	VariableNameMangler.disableDerivedAbiTags();
825	VariableNameMangler.mangleNameWithAbiTags(VD, nullptr);
826
827	// Get tags from variable type that are not present in its name.
828	const AbiTagList &UsedAbiTags =
829	VariableNameMangler.AbiTagsRoot.getSortedUniqueUsedAbiTags();
830	AbiTagList AdditionalAbiTags(VariableTypeAbiTags.size());
831	AdditionalAbiTags.erase(
832	std::set_difference(VariableTypeAbiTags.begin(),
833	VariableTypeAbiTags.end(), UsedAbiTags.begin(),
834	UsedAbiTags.end(), AdditionalAbiTags.begin()),
835	AdditionalAbiTags.end());
836
837	// Output name with implicit tags.
838	mangleNameWithAbiTags(VD, &AdditionalAbiTags);
839	} else {
840	mangleNameWithAbiTags(ND, nullptr);
841	}
842	}
843
844	void CXXNameMangler::mangleNameWithAbiTags(const NamedDecl *ND,
845	const AbiTagList *AdditionalAbiTags) {
846	// <name> ::= [<module-name>] <nested-name>
847	// ::= [<module-name>] <unscoped-name>
848	// ::= [<module-name>] <unscoped-template-name> <template-args>
849	// ::= <local-name>
850	//
851	const DeclContext *DC = getEffectiveDeclContext(ND);
852
853	// If this is an extern variable declared locally, the relevant DeclContext
854	// is that of the containing namespace, or the translation unit.
855	// FIXME: This is a hack; extern variables declared locally should have
856	// a proper semantic declaration context!
857	if (isLocalContainerContext(DC) && ND->hasLinkage() && !isLambda(ND))
858	while (!DC->isNamespace() && !DC->isTranslationUnit())
859	DC = getEffectiveParentContext(DC);
860	else if (GetLocalClassDecl(ND)) {
861	mangleLocalName(ND, AdditionalAbiTags);
862	return;
863	}
864
865	DC = IgnoreLinkageSpecDecls(DC);
866
867	if (isLocalContainerContext(DC)) {
868	mangleLocalName(ND, AdditionalAbiTags);
869	return;
870	}
871
872	// Do not mangle the owning module for an external linkage declaration.
873	// This enables backwards-compatibility with non-modular code, and is
874	// a valid choice since conflicts are not permitted by C++ Modules TS
875	// [basic.def.odr]/6.2.
876	if (!ND->hasExternalFormalLinkage())
877	if (Module *M = ND->getOwningModuleForLinkage())
878	mangleModuleName(M);
879
880	if (DC->isTranslationUnit() \|\| isStdNamespace(DC)) {
881	// Check if we have a template.
882	const TemplateArgumentList *TemplateArgs = nullptr;
883	if (const TemplateDecl *TD = isTemplate(ND, TemplateArgs)) {
884	mangleUnscopedTemplateName(TD, AdditionalAbiTags);
885	mangleTemplateArgs(*TemplateArgs);
886	return;
887	}
888
889	mangleUnscopedName(ND, AdditionalAbiTags);
890	return;
891	}
892
893	mangleNestedName(ND, DC, AdditionalAbiTags);
894	}
895
896	void CXXNameMangler::mangleModuleName(const Module *M) {
897	// Implement the C++ Modules TS name mangling proposal; see
898	// https://gcc.gnu.org/wiki/cxx-modules?action=AttachFile
899	//
900	// <module-name> ::= W <unscoped-name>+ E
901	// ::= W <module-subst> <unscoped-name>* E
902	Out << 'W';
903	mangleModuleNamePrefix(M->Name);
904	Out << 'E';
905	}
906
907	void CXXNameMangler::mangleModuleNamePrefix(StringRef Name) {
908	// <module-subst> ::= _ <seq-id> # 0 < seq-id < 10
909	// ::= W <seq-id - 10> _ # otherwise
910	auto It = ModuleSubstitutions.find(Name);
911	if (It != ModuleSubstitutions.end()) {
912	if (It->second < 10)
913	Out << '_' << static_cast<char>('0' + It->second);
914	else
915	Out << 'W' << (It->second - 10) << '_';
916	return;
917	}
918
919	// FIXME: Preserve hierarchy in module names rather than flattening
920	// them to strings; use Module*s as substitution keys.
921	auto Parts = Name.rsplit('.');
922	if (Parts.second.empty())
923	Parts.second = Parts.first;
924	else
925	mangleModuleNamePrefix(Parts.first);
926
927	Out << Parts.second.size() << Parts.second;
928	ModuleSubstitutions.insert({Name, ModuleSubstitutions.size()});
929	}
930
931	void CXXNameMangler::mangleTemplateName(const TemplateDecl *TD,
932	const TemplateArgument *TemplateArgs,
933	unsigned NumTemplateArgs) {
934	const DeclContext *DC = IgnoreLinkageSpecDecls(getEffectiveDeclContext(TD));
935
936	if (DC->isTranslationUnit() \|\| isStdNamespace(DC)) {
937	mangleUnscopedTemplateName(TD, nullptr);
938	mangleTemplateArgs(TemplateArgs, NumTemplateArgs);
939	} else {
940	mangleNestedName(TD, TemplateArgs, NumTemplateArgs);
941	}
942	}
943
944	void CXXNameMangler::mangleUnscopedName(const NamedDecl *ND,
945	const AbiTagList *AdditionalAbiTags) {
946	// <unscoped-name> ::= <unqualified-name>
947	// ::= St <unqualified-name> # ::std::
948
949	if (isStdNamespace(IgnoreLinkageSpecDecls(getEffectiveDeclContext(ND))))
950	Out << "St";
951
952	mangleUnqualifiedName(ND, AdditionalAbiTags);
953	}
954
955	void CXXNameMangler::mangleUnscopedTemplateName(
956	const TemplateDecl ND, const AbiTagList AdditionalAbiTags) {
957	// <unscoped-template-name> ::= <unscoped-name>
958	// ::= <substitution>
959	if (mangleSubstitution(ND))
960	return;
961
962	// <template-template-param> ::= <template-param>
963	if (const auto *TTP = dyn_cast<TemplateTemplateParmDecl>(ND)) {
964	(0) . __assert_fail ("!AdditionalAbiTags && \"template template param cannot have abi tags\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 965, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(!AdditionalAbiTags &&
965	(0) . __assert_fail ("!AdditionalAbiTags && \"template template param cannot have abi tags\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 965, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "template template param cannot have abi tags");
966	mangleTemplateParameter(TTP->getIndex());
967	} else if (isa<BuiltinTemplateDecl>(ND)) {
968	mangleUnscopedName(ND, AdditionalAbiTags);
969	} else {
970	mangleUnscopedName(ND->getTemplatedDecl(), AdditionalAbiTags);
971	}
972
973	addSubstitution(ND);
974	}
975
976	void CXXNameMangler::mangleUnscopedTemplateName(
977	TemplateName Template, const AbiTagList *AdditionalAbiTags) {
978	// <unscoped-template-name> ::= <unscoped-name>
979	// ::= <substitution>
980	if (TemplateDecl *TD = Template.getAsTemplateDecl())
981	return mangleUnscopedTemplateName(TD, AdditionalAbiTags);
982
983	if (mangleSubstitution(Template))
984	return;
985
986	(0) . __assert_fail ("!AdditionalAbiTags && \"dependent template name cannot have abi tags\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 987, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(!AdditionalAbiTags &&
987	(0) . __assert_fail ("!AdditionalAbiTags && \"dependent template name cannot have abi tags\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 987, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "dependent template name cannot have abi tags");
988
989	DependentTemplateName *Dependent = Template.getAsDependentTemplateName();
990	(0) . __assert_fail ("Dependent && \"Not a dependent template name?\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 990, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(Dependent && "Not a dependent template name?");
991	if (const IdentifierInfo *Id = Dependent->getIdentifier())
992	mangleSourceName(Id);
993	else
994	mangleOperatorName(Dependent->getOperator(), UnknownArity);
995
996	addSubstitution(Template);
997	}
998
999	void CXXNameMangler::mangleFloat(const llvm::APFloat &f) {
1000	// ABI:
1001	// Floating-point literals are encoded using a fixed-length
1002	// lowercase hexadecimal string corresponding to the internal
1003	// representation (IEEE on Itanium), high-order bytes first,
1004	// without leading zeroes. For example: "Lf bf800000 E" is -1.0f
1005	// on Itanium.
1006	// The 'without leading zeroes' thing seems to be an editorial
1007	// mistake; see the discussion on cxx-abi-dev beginning on
1008	// 2012-01-16.
1009
1010	// Our requirements here are just barely weird enough to justify
1011	// using a custom algorithm instead of post-processing APInt::toString().
1012
1013	llvm::APInt valueBits = f.bitcastToAPInt();
1014	unsigned numCharacters = (valueBits.getBitWidth() + 3) / 4;
1015	assert(numCharacters != 0);
1016
1017	// Allocate a buffer of the right number of characters.
1018	SmallVector<char, 20> buffer(numCharacters);
1019
1020	// Fill the buffer left-to-right.
1021	for (unsigned stringIndex = 0; stringIndex != numCharacters; ++stringIndex) {
1022	// The bit-index of the next hex digit.
1023	unsigned digitBitIndex = 4 * (numCharacters - stringIndex - 1);
1024
1025	// Project out 4 bits starting at 'digitIndex'.
1026	uint64_t hexDigit = valueBits.getRawData()[digitBitIndex / 64];
1027	hexDigit >>= (digitBitIndex % 64);
1028	hexDigit &= 0xF;
1029
1030	// Map that over to a lowercase hex digit.
1031	static const char charForHex[16] = {
1032	'0', '1', '2', '3', '4', '5', '6', '7',
1033	'8', '9', 'a', 'b', 'c', 'd', 'e', 'f'
1034	};
1035	buffer[stringIndex] = charForHex[hexDigit];
1036	}
1037
1038	Out.write(buffer.data(), numCharacters);
1039	}
1040
1041	void CXXNameMangler::mangleNumber(const llvm::APSInt &Value) {
1042	if (Value.isSigned() && Value.isNegative()) {
1043	Out << 'n';
1044	Value.abs().print(Out, /signed/ false);
1045	} else {
1046	Value.print(Out, /signed/ false);
1047	}
1048	}
1049
1050	void CXXNameMangler::mangleNumber(int64_t Number) {
1051	// <number> ::= [n] <non-negative decimal integer>
1052	if (Number < 0) {
1053	Out << 'n';
1054	Number = -Number;
1055	}
1056
1057	Out << Number;
1058	}
1059
1060	void CXXNameMangler::mangleCallOffset(int64_t NonVirtual, int64_t Virtual) {
1061	// <call-offset> ::= h <nv-offset> _
1062	// ::= v <v-offset> _
1063	// <nv-offset> ::= <offset number> # non-virtual base override
1064	// <v-offset> ::= <offset number> _ <virtual offset number>
1065	// # virtual base override, with vcall offset
1066	if (!Virtual) {
1067	Out << 'h';
1068	mangleNumber(NonVirtual);
1069	Out << '_';
1070	return;
1071	}
1072
1073	Out << 'v';
1074	mangleNumber(NonVirtual);
1075	Out << '_';
1076	mangleNumber(Virtual);
1077	Out << '_';
1078	}
1079
1080	void CXXNameMangler::manglePrefix(QualType type) {
1081	if (const auto *TST = type->getAs<TemplateSpecializationType>()) {
1082	if (!mangleSubstitution(QualType(TST, 0))) {
1083	mangleTemplatePrefix(TST->getTemplateName());
1084
1085	// FIXME: GCC does not appear to mangle the template arguments when
1086	// the template in question is a dependent template name. Should we
1087	// emulate that badness?
1088	mangleTemplateArgs(TST->getArgs(), TST->getNumArgs());
1089	addSubstitution(QualType(TST, 0));
1090	}
1091	} else if (const auto *DTST =
1092	type->getAs<DependentTemplateSpecializationType>()) {
1093	if (!mangleSubstitution(QualType(DTST, 0))) {
1094	TemplateName Template = getASTContext().getDependentTemplateName(
1095	DTST->getQualifier(), DTST->getIdentifier());
1096	mangleTemplatePrefix(Template);
1097
1098	// FIXME: GCC does not appear to mangle the template arguments when
1099	// the template in question is a dependent template name. Should we
1100	// emulate that badness?
1101	mangleTemplateArgs(DTST->getArgs(), DTST->getNumArgs());
1102	addSubstitution(QualType(DTST, 0));
1103	}
1104	} else {
1105	// We use the QualType mangle type variant here because it handles
1106	// substitutions.
1107	mangleType(type);
1108	}
1109	}
1110
1111	/// Mangle everything prior to the base-unresolved-name in an unresolved-name.
1112	///
1113	/// \param recursive - true if this is being called recursively,
1114	/// i.e. if there is more prefix "to the right".
1115	void CXXNameMangler::mangleUnresolvedPrefix(NestedNameSpecifier *qualifier,
1116	bool recursive) {
1117
1118	// x, ::x
1119	// <unresolved-name> ::= [gs] <base-unresolved-name>
1120
1121	// T::x / decltype(p)::x
1122	// <unresolved-name> ::= sr <unresolved-type> <base-unresolved-name>
1123
1124	// T::N::x /decltype(p)::N::x
1125	// <unresolved-name> ::= srN <unresolved-type> <unresolved-qualifier-level>+ E
1126	// <base-unresolved-name>
1127
1128	// A::x, N::y, A<T>::z; "gs" means leading "::"
1129	// <unresolved-name> ::= [gs] sr <unresolved-qualifier-level>+ E
1130	// <base-unresolved-name>
1131
1132	switch (qualifier->getKind()) {
1133	case NestedNameSpecifier::Global:
1134	Out << "gs";
1135
1136	// We want an 'sr' unless this is the entire NNS.
1137	if (recursive)
1138	Out << "sr";
1139
1140	// We never want an 'E' here.
1141	return;
1142
1143	case NestedNameSpecifier::Super:
1144	llvm_unreachable("Can't mangle __super specifier");
1145
1146	case NestedNameSpecifier::Namespace:
1147	if (qualifier->getPrefix())
1148	mangleUnresolvedPrefix(qualifier->getPrefix(),
1149	/recursive/ true);
1150	else
1151	Out << "sr";
1152	mangleSourceNameWithAbiTags(qualifier->getAsNamespace());
1153	break;
1154	case NestedNameSpecifier::NamespaceAlias:
1155	if (qualifier->getPrefix())
1156	mangleUnresolvedPrefix(qualifier->getPrefix(),
1157	/recursive/ true);
1158	else
1159	Out << "sr";
1160	mangleSourceNameWithAbiTags(qualifier->getAsNamespaceAlias());
1161	break;
1162
1163	case NestedNameSpecifier::TypeSpec:
1164	case NestedNameSpecifier::TypeSpecWithTemplate: {
1165	const Type *type = qualifier->getAsType();
1166
1167	// We only want to use an unresolved-type encoding if this is one of:
1168	// - a decltype
1169	// - a template type parameter
1170	// - a template template parameter with arguments
1171	// In all of these cases, we should have no prefix.
1172	if (qualifier->getPrefix()) {
1173	mangleUnresolvedPrefix(qualifier->getPrefix(),
1174	/recursive/ true);
1175	} else {
1176	// Otherwise, all the cases want this.
1177	Out << "sr";
1178	}
1179
1180	if (mangleUnresolvedTypeOrSimpleId(QualType(type, 0), recursive ? "N" : ""))
1181	return;
1182
1183	break;
1184	}
1185
1186	case NestedNameSpecifier::Identifier:
1187	// Member expressions can have these without prefixes.
1188	if (qualifier->getPrefix())
1189	mangleUnresolvedPrefix(qualifier->getPrefix(),
1190	/recursive/ true);
1191	else
1192	Out << "sr";
1193
1194	mangleSourceName(qualifier->getAsIdentifier());
1195	// An Identifier has no type information, so we can't emit abi tags for it.
1196	break;
1197	}
1198
1199	// If this was the innermost part of the NNS, and we fell out to
1200	// here, append an 'E'.
1201	if (!recursive)
1202	Out << 'E';
1203	}
1204
1205	/// Mangle an unresolved-name, which is generally used for names which
1206	/// weren't resolved to specific entities.
1207	void CXXNameMangler::mangleUnresolvedName(
1208	NestedNameSpecifier *qualifier, DeclarationName name,
1209	const TemplateArgumentLoc *TemplateArgs, unsigned NumTemplateArgs,
1210	unsigned knownArity) {
1211	if (qualifier) mangleUnresolvedPrefix(qualifier);
1212	switch (name.getNameKind()) {
1213	// <base-unresolved-name> ::= <simple-id>
1214	case DeclarationName::Identifier:
1215	mangleSourceName(name.getAsIdentifierInfo());
1216	break;
1217	// <base-unresolved-name> ::= dn <destructor-name>
1218	case DeclarationName::CXXDestructorName:
1219	Out << "dn";
1220	mangleUnresolvedTypeOrSimpleId(name.getCXXNameType());
1221	break;
1222	// <base-unresolved-name> ::= on <operator-name>
1223	case DeclarationName::CXXConversionFunctionName:
1224	case DeclarationName::CXXLiteralOperatorName:
1225	case DeclarationName::CXXOperatorName:
1226	Out << "on";
1227	mangleOperatorName(name, knownArity);
1228	break;
1229	case DeclarationName::CXXConstructorName:
1230	llvm_unreachable("Can't mangle a constructor name!");
1231	case DeclarationName::CXXUsingDirective:
1232	llvm_unreachable("Can't mangle a using directive name!");
1233	case DeclarationName::CXXDeductionGuideName:
1234	llvm_unreachable("Can't mangle a deduction guide name!");
1235	case DeclarationName::ObjCMultiArgSelector:
1236	case DeclarationName::ObjCOneArgSelector:
1237	case DeclarationName::ObjCZeroArgSelector:
1238	llvm_unreachable("Can't mangle Objective-C selector names here!");
1239	}
1240
1241	// The <simple-id> and on <operator-name> productions end in an optional
1242	// <template-args>.
1243	if (TemplateArgs)
1244	mangleTemplateArgs(TemplateArgs, NumTemplateArgs);
1245	}
1246
1247	void CXXNameMangler::mangleUnqualifiedName(const NamedDecl *ND,
1248	DeclarationName Name,
1249	unsigned KnownArity,
1250	const AbiTagList *AdditionalAbiTags) {
1251	unsigned Arity = KnownArity;
1252	// <unqualified-name> ::= <operator-name>
1253	// ::= <ctor-dtor-name>
1254	// ::= <source-name>
1255	switch (Name.getNameKind()) {
1256	case DeclarationName::Identifier: {
1257	const IdentifierInfo *II = Name.getAsIdentifierInfo();
1258
1259	// We mangle decomposition declarations as the names of their bindings.
1260	if (auto *DD = dyn_cast<DecompositionDecl>(ND)) {
1261	// FIXME: Non-standard mangling for decomposition declarations:
1262	//
1263	// <unqualified-name> ::= DC <source-name>* E
1264	//
1265	// These can never be referenced across translation units, so we do
1266	// not need a cross-vendor mangling for anything other than demanglers.
1267	// Proposed on cxx-abi-dev on 2016-08-12
1268	Out << "DC";
1269	for (auto *BD : DD->bindings())
1270	mangleSourceName(BD->getDeclName().getAsIdentifierInfo());
1271	Out << 'E';
1272	writeAbiTags(ND, AdditionalAbiTags);
1273	break;
1274	}
1275
1276	if (II) {
1277	// Match GCC's naming convention for internal linkage symbols, for
1278	// symbols that are not actually visible outside of this TU. GCC
1279	// distinguishes between internal and external linkage symbols in
1280	// its mangling, to support cases like this that were valid C++ prior
1281	// to DR426:
1282	//
1283	// void test() { extern void foo(); }
1284	// static void foo();
1285	//
1286	// Don't bother with the L marker for names in anonymous namespaces; the
1287	// 12_GLOBAL__N_1 mangling is quite sufficient there, and this better
1288	// matches GCC anyway, because GCC does not treat anonymous namespaces as
1289	// implying internal linkage.
1290	if (ND && ND->getFormalLinkage() == InternalLinkage &&
1291	!ND->isExternallyVisible() &&
1292	getEffectiveDeclContext(ND)->isFileContext() &&
1293	!ND->isInAnonymousNamespace())
1294	Out << 'L';
1295
1296	auto *FD = dyn_cast<FunctionDecl>(ND);
1297	bool IsRegCall = FD &&
1298	FD->getType()->castAs<FunctionType>()->getCallConv() ==
1299	clang::CC_X86RegCall;
1300	if (IsRegCall)
1301	mangleRegCallName(II);
1302	else
1303	mangleSourceName(II);
1304
1305	writeAbiTags(ND, AdditionalAbiTags);
1306	break;
1307	}
1308
1309	// Otherwise, an anonymous entity. We must have a declaration.
1310	(0) . __assert_fail ("ND && \"mangling empty name without declaration\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 1310, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(ND && "mangling empty name without declaration");
1311
1312	if (const NamespaceDecl *NS = dyn_cast<NamespaceDecl>(ND)) {
1313	if (NS->isAnonymousNamespace()) {
1314	// This is how gcc mangles these names.
1315	Out << "12_GLOBAL__N_1";
1316	break;
1317	}
1318	}
1319
1320	if (const VarDecl *VD = dyn_cast<VarDecl>(ND)) {
1321	// We must have an anonymous union or struct declaration.
1322	const RecordDecl *RD = VD->getType()->getAs<RecordType>()->getDecl();
1323
1324	// Itanium C++ ABI 5.1.2:
1325	//
1326	// For the purposes of mangling, the name of an anonymous union is
1327	// considered to be the name of the first named data member found by a
1328	// pre-order, depth-first, declaration-order walk of the data members of
1329	// the anonymous union. If there is no such data member (i.e., if all of
1330	// the data members in the union are unnamed), then there is no way for
1331	// a program to refer to the anonymous union, and there is therefore no
1332	// need to mangle its name.
1333	(0) . __assert_fail ("RD->isAnonymousStructOrUnion() && \"Expected anonymous struct or union!\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 1334, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(RD->isAnonymousStructOrUnion()
1334	(0) . __assert_fail ("RD->isAnonymousStructOrUnion() && \"Expected anonymous struct or union!\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 1334, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> && "Expected anonymous struct or union!");
1335	const FieldDecl *FD = RD->findFirstNamedDataMember();
1336
1337	// It's actually possible for various reasons for us to get here
1338	// with an empty anonymous struct / union. Fortunately, it
1339	// doesn't really matter what name we generate.
1340	if (!FD) break;
1341	(0) . __assert_fail ("FD->getIdentifier() && \"Data member name isn't an identifier!\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 1341, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(FD->getIdentifier() && "Data member name isn't an identifier!");
1342
1343	mangleSourceName(FD->getIdentifier());
1344	// Not emitting abi tags: internal name anyway.
1345	break;
1346	}
1347
1348	// Class extensions have no name as a category, and it's possible
1349	// for them to be the semantic parent of certain declarations
1350	// (primarily, tag decls defined within declarations). Such
1351	// declarations will always have internal linkage, so the name
1352	// doesn't really matter, but we shouldn't crash on them. For
1353	// safety, just handle all ObjC containers here.
1354	if (isa<ObjCContainerDecl>(ND))
1355	break;
1356
1357	// We must have an anonymous struct.
1358	const TagDecl *TD = cast<TagDecl>(ND);
1359	if (const TypedefNameDecl *D = TD->getTypedefNameForAnonDecl()) {
1360	(0) . __assert_fail ("TD->getDeclContext() == D->getDeclContext() && \"Typedef should not be in another decl context!\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 1361, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(TD->getDeclContext() == D->getDeclContext() &&
1361	(0) . __assert_fail ("TD->getDeclContext() == D->getDeclContext() && \"Typedef should not be in another decl context!\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 1361, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "Typedef should not be in another decl context!");
1362	(0) . __assert_fail ("D->getDeclName().getAsIdentifierInfo() && \"Typedef was not named!\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 1363, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(D->getDeclName().getAsIdentifierInfo() &&
1363	(0) . __assert_fail ("D->getDeclName().getAsIdentifierInfo() && \"Typedef was not named!\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 1363, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "Typedef was not named!");
1364	mangleSourceName(D->getDeclName().getAsIdentifierInfo());
1365	(0) . __assert_fail ("!AdditionalAbiTags && \"Type cannot have additional abi tags\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 1365, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(!AdditionalAbiTags && "Type cannot have additional abi tags");
1366	// Explicit abi tags are still possible; take from underlying type, not
1367	// from typedef.
1368	writeAbiTags(TD, nullptr);
1369	break;
1370	}
1371
1372	// <unnamed-type-name> ::= <closure-type-name>
1373	//
1374	// <closure-type-name> ::= Ul <lambda-sig> E [ <nonnegative number> ] _
1375	// <lambda-sig> ::= <parameter-type>+ # Parameter types or 'v' for 'void'.
1376	if (const CXXRecordDecl *Record = dyn_cast<CXXRecordDecl>(TD)) {
1377	if (Record->isLambda() && Record->getLambdaManglingNumber()) {
1378	(0) . __assert_fail ("!AdditionalAbiTags && \"Lambda type cannot have additional abi tags\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 1379, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(!AdditionalAbiTags &&
1379	(0) . __assert_fail ("!AdditionalAbiTags && \"Lambda type cannot have additional abi tags\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 1379, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "Lambda type cannot have additional abi tags");
1380	mangleLambda(Record);
1381	break;
1382	}
1383	}
1384
1385	if (TD->isExternallyVisible()) {
1386	unsigned UnnamedMangle = getASTContext().getManglingNumber(TD);
1387	Out << "Ut";
1388	if (UnnamedMangle > 1)
1389	Out << UnnamedMangle - 2;
1390	Out << '_';
1391	writeAbiTags(TD, AdditionalAbiTags);
1392	break;
1393	}
1394
1395	// Get a unique id for the anonymous struct. If it is not a real output
1396	// ID doesn't matter so use fake one.
1397	unsigned AnonStructId = NullOut ? 0 : Context.getAnonymousStructId(TD);
1398
1399	// Mangle it as a source name in the form
1400	// [n] $_<id>
1401	// where n is the length of the string.
1402	SmallString<8> Str;
1403	Str += "$_";
1404	Str += llvm::utostr(AnonStructId);
1405
1406	Out << Str.size();
1407	Out << Str;
1408	break;
1409	}
1410
1411	case DeclarationName::ObjCZeroArgSelector:
1412	case DeclarationName::ObjCOneArgSelector:
1413	case DeclarationName::ObjCMultiArgSelector:
1414	llvm_unreachable("Can't mangle Objective-C selector names here!");
1415
1416	case DeclarationName::CXXConstructorName: {
1417	const CXXRecordDecl *InheritedFrom = nullptr;
1418	const TemplateArgumentList *InheritedTemplateArgs = nullptr;
1419	if (auto Inherited =
1420	cast<CXXConstructorDecl>(ND)->getInheritedConstructor()) {
1421	InheritedFrom = Inherited.getConstructor()->getParent();
1422	InheritedTemplateArgs =
1423	Inherited.getConstructor()->getTemplateSpecializationArgs();
1424	}
1425
1426	if (ND == Structor)
1427	// If the named decl is the C++ constructor we're mangling, use the type
1428	// we were given.
1429	mangleCXXCtorType(static_cast<CXXCtorType>(StructorType), InheritedFrom);
1430	else
1431	// Otherwise, use the complete constructor name. This is relevant if a
1432	// class with a constructor is declared within a constructor.
1433	mangleCXXCtorType(Ctor_Complete, InheritedFrom);
1434
1435	// FIXME: The template arguments are part of the enclosing prefix or
1436	// nested-name, but it's more convenient to mangle them here.
1437	if (InheritedTemplateArgs)
1438	mangleTemplateArgs(*InheritedTemplateArgs);
1439
1440	writeAbiTags(ND, AdditionalAbiTags);
1441	break;
1442	}
1443
1444	case DeclarationName::CXXDestructorName:
1445	if (ND == Structor)
1446	// If the named decl is the C++ destructor we're mangling, use the type we
1447	// were given.
1448	mangleCXXDtorType(static_cast<CXXDtorType>(StructorType));
1449	else
1450	// Otherwise, use the complete destructor name. This is relevant if a
1451	// class with a destructor is declared within a destructor.
1452	mangleCXXDtorType(Dtor_Complete);
1453	writeAbiTags(ND, AdditionalAbiTags);
1454	break;
1455
1456	case DeclarationName::CXXOperatorName:
1457	if (ND && Arity == UnknownArity) {
1458	Arity = cast<FunctionDecl>(ND)->getNumParams();
1459
1460	// If we have a member function, we need to include the 'this' pointer.
1461	if (const auto *MD = dyn_cast<CXXMethodDecl>(ND))
1462	if (!MD->isStatic())
1463	Arity++;
1464	}
1465	LLVM_FALLTHROUGH;
1466	case DeclarationName::CXXConversionFunctionName:
1467	case DeclarationName::CXXLiteralOperatorName:
1468	mangleOperatorName(Name, Arity);
1469	writeAbiTags(ND, AdditionalAbiTags);
1470	break;
1471
1472	case DeclarationName::CXXDeductionGuideName:
1473	llvm_unreachable("Can't mangle a deduction guide name!");
1474
1475	case DeclarationName::CXXUsingDirective:
1476	llvm_unreachable("Can't mangle a using directive name!");
1477	}
1478	}
1479
1480	void CXXNameMangler::mangleRegCallName(const IdentifierInfo *II) {
1481	// <source-name> ::= <positive length number> __regcall3__ <identifier>
1482	// <number> ::= [n] <non-negative decimal integer>
1483	// <identifier> ::= <unqualified source code identifier>
1484	Out << II->getLength() + sizeof("__regcall3__") - 1 << "__regcall3__"
1485	<< II->getName();
1486	}
1487
1488	void CXXNameMangler::mangleSourceName(const IdentifierInfo *II) {
1489	// <source-name> ::= <positive length number> <identifier>
1490	// <number> ::= [n] <non-negative decimal integer>
1491	// <identifier> ::= <unqualified source code identifier>
1492	Out << II->getLength() << II->getName();
1493	}
1494
1495	void CXXNameMangler::mangleNestedName(const NamedDecl *ND,
1496	const DeclContext *DC,
1497	const AbiTagList *AdditionalAbiTags,
1498	bool NoFunction) {
1499	// <nested-name>
1500	// ::= N [<CV-qualifiers>] [<ref-qualifier>] <prefix> <unqualified-name> E
1501	// ::= N [<CV-qualifiers>] [<ref-qualifier>] <template-prefix>
1502	// <template-args> E
1503
1504	Out << 'N';
1505	if (const CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(ND)) {
1506	Qualifiers MethodQuals = Method->getMethodQualifiers();
1507	// We do not consider restrict a distinguishing attribute for overloading
1508	// purposes so we must not mangle it.
1509	MethodQuals.removeRestrict();
1510	mangleQualifiers(MethodQuals);
1511	mangleRefQualifier(Method->getRefQualifier());
1512	}
1513
1514	// Check if we have a template.
1515	const TemplateArgumentList *TemplateArgs = nullptr;
1516	if (const TemplateDecl *TD = isTemplate(ND, TemplateArgs)) {
1517	mangleTemplatePrefix(TD, NoFunction);
1518	mangleTemplateArgs(*TemplateArgs);
1519	}
1520	else {
1521	manglePrefix(DC, NoFunction);
1522	mangleUnqualifiedName(ND, AdditionalAbiTags);
1523	}
1524
1525	Out << 'E';
1526	}
1527	void CXXNameMangler::mangleNestedName(const TemplateDecl *TD,
1528	const TemplateArgument *TemplateArgs,
1529	unsigned NumTemplateArgs) {
1530	// <nested-name> ::= N [<CV-qualifiers>] <template-prefix> <template-args> E
1531
1532	Out << 'N';
1533
1534	mangleTemplatePrefix(TD);
1535	mangleTemplateArgs(TemplateArgs, NumTemplateArgs);
1536
1537	Out << 'E';
1538	}
1539
1540	void CXXNameMangler::mangleLocalName(const Decl *D,
1541	const AbiTagList *AdditionalAbiTags) {
1542	// <local-name> := Z <function encoding> E <entity name> [<discriminator>]
1543	// := Z <function encoding> E s [<discriminator>]
1544	// <local-name> := Z <function encoding> E d [ <parameter number> ]
1545	// _ <entity name>
1546	// <discriminator> := _ <non-negative number>
1547	(D) \|\| isa(D)", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 1547, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(isa<NamedDecl>(D) \|\| isa<BlockDecl>(D));
1548	const RecordDecl *RD = GetLocalClassDecl(D);
1549	const DeclContext *DC = getEffectiveDeclContext(RD ? RD : D);
1550
1551	Out << 'Z';
1552
1553	{
1554	AbiTagState LocalAbiTags(AbiTags);
1555
1556	if (const ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(DC))
1557	mangleObjCMethodName(MD);
1558	else if (const BlockDecl *BD = dyn_cast<BlockDecl>(DC))
1559	mangleBlockForPrefix(BD);
1560	else
1561	mangleFunctionEncoding(cast<FunctionDecl>(DC));
1562
1563	// Implicit ABI tags (from namespace) are not available in the following
1564	// entity; reset to actually emitted tags, which are available.
1565	LocalAbiTags.setUsedAbiTags(LocalAbiTags.getEmittedAbiTags());
1566	}
1567
1568	Out << 'E';
1569
1570	// GCC 5.3.0 doesn't emit derived ABI tags for local names but that seems to
1571	// be a bug that is fixed in trunk.
1572
1573	if (RD) {
1574	// The parameter number is omitted for the last parameter, 0 for the
1575	// second-to-last parameter, 1 for the third-to-last parameter, etc. The
1576	// <entity name> will of course contain a <closure-type-name>: Its
1577	// numbering will be local to the particular argument in which it appears
1578	// -- other default arguments do not affect its encoding.
1579	const CXXRecordDecl *CXXRD = dyn_cast<CXXRecordDecl>(RD);
1580	if (CXXRD && CXXRD->isLambda()) {
1581	if (const ParmVarDecl *Parm
1582	= dyn_cast_or_null<ParmVarDecl>(CXXRD->getLambdaContextDecl())) {
1583	if (const FunctionDecl *Func
1584	= dyn_cast<FunctionDecl>(Parm->getDeclContext())) {
1585	Out << 'd';
1586	unsigned Num = Func->getNumParams() - Parm->getFunctionScopeIndex();
1587	if (Num > 1)
1588	mangleNumber(Num - 2);
1589	Out << '_';
1590	}
1591	}
1592	}
1593
1594	// Mangle the name relative to the closest enclosing function.
1595	// equality ok because RD derived from ND above
1596	if (D == RD) {
1597	mangleUnqualifiedName(RD, AdditionalAbiTags);
1598	} else if (const BlockDecl *BD = dyn_cast<BlockDecl>(D)) {
1599	manglePrefix(getEffectiveDeclContext(BD), true /NoFunction/);
1600	(0) . __assert_fail ("!AdditionalAbiTags && \"Block cannot have additional abi tags\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 1600, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(!AdditionalAbiTags && "Block cannot have additional abi tags");
1601	mangleUnqualifiedBlock(BD);
1602	} else {
1603	const NamedDecl *ND = cast<NamedDecl>(D);
1604	mangleNestedName(ND, getEffectiveDeclContext(ND), AdditionalAbiTags,
1605	true /NoFunction/);
1606	}
1607	} else if (const BlockDecl *BD = dyn_cast<BlockDecl>(D)) {
1608	// Mangle a block in a default parameter; see above explanation for
1609	// lambdas.
1610	if (const ParmVarDecl *Parm
1611	= dyn_cast_or_null<ParmVarDecl>(BD->getBlockManglingContextDecl())) {
1612	if (const FunctionDecl *Func
1613	= dyn_cast<FunctionDecl>(Parm->getDeclContext())) {
1614	Out << 'd';
1615	unsigned Num = Func->getNumParams() - Parm->getFunctionScopeIndex();
1616	if (Num > 1)
1617	mangleNumber(Num - 2);
1618	Out << '_';
1619	}
1620	}
1621
1622	(0) . __assert_fail ("!AdditionalAbiTags && \"Block cannot have additional abi tags\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 1622, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(!AdditionalAbiTags && "Block cannot have additional abi tags");
1623	mangleUnqualifiedBlock(BD);
1624	} else {
1625	mangleUnqualifiedName(cast<NamedDecl>(D), AdditionalAbiTags);
1626	}
1627
1628	if (const NamedDecl *ND = dyn_cast<NamedDecl>(RD ? RD : D)) {
1629	unsigned disc;
1630	if (Context.getNextDiscriminator(ND, disc)) {
1631	if (disc < 10)
1632	Out << '_' << disc;
1633	else
1634	Out << "__" << disc << '_';
1635	}
1636	}
1637	}
1638
1639	void CXXNameMangler::mangleBlockForPrefix(const BlockDecl *Block) {
1640	if (GetLocalClassDecl(Block)) {
1641	mangleLocalName(Block, /* AdditionalAbiTags */ nullptr);
1642	return;
1643	}
1644	const DeclContext *DC = getEffectiveDeclContext(Block);
1645	if (isLocalContainerContext(DC)) {
1646	mangleLocalName(Block, /* AdditionalAbiTags */ nullptr);
1647	return;
1648	}
1649	manglePrefix(getEffectiveDeclContext(Block));
1650	mangleUnqualifiedBlock(Block);
1651	}
1652
1653	void CXXNameMangler::mangleUnqualifiedBlock(const BlockDecl *Block) {
1654	if (Decl *Context = Block->getBlockManglingContextDecl()) {
1655	if ((isa<VarDecl>(Context) \|\| isa<FieldDecl>(Context)) &&
1656	Context->getDeclContext()->isRecord()) {
1657	const auto *ND = cast<NamedDecl>(Context);
1658	if (ND->getIdentifier()) {
1659	mangleSourceNameWithAbiTags(ND);
1660	Out << 'M';
1661	}
1662	}
1663	}
1664
1665	// If we have a block mangling number, use it.
1666	unsigned Number = Block->getBlockManglingNumber();
1667	// Otherwise, just make up a number. It doesn't matter what it is because
1668	// the symbol in question isn't externally visible.
1669	if (!Number)
1670	Number = Context.getBlockId(Block, false);
1671	else {
1672	// Stored mangling numbers are 1-based.
1673	--Number;
1674	}
1675	Out << "Ub";
1676	if (Number > 0)
1677	Out << Number - 1;
1678	Out << '_';
1679	}
1680
1681	void CXXNameMangler::mangleLambda(const CXXRecordDecl *Lambda) {
1682	// If the context of a closure type is an initializer for a class member
1683	// (static or nonstatic), it is encoded in a qualified name with a final
1684	// <prefix> of the form:
1685	//
1686	// <data-member-prefix> := <member source-name> M
1687	//
1688	// Technically, the data-member-prefix is part of the <prefix>. However,
1689	// since a closure type will always be mangled with a prefix, it's easier
1690	// to emit that last part of the prefix here.
1691	if (Decl *Context = Lambda->getLambdaContextDecl()) {
1692	if ((isa<VarDecl>(Context) \|\| isa<FieldDecl>(Context)) &&
1693	!isa<ParmVarDecl>(Context)) {
1694	// FIXME: 'inline auto [a, b] = []{ return ... };' does not get a
1695	// reasonable mangling here.
1696	if (const IdentifierInfo *Name
1697	= cast<NamedDecl>(Context)->getIdentifier()) {
1698	mangleSourceName(Name);
1699	const TemplateArgumentList *TemplateArgs = nullptr;
1700	if (isTemplate(cast<NamedDecl>(Context), TemplateArgs))
1701	mangleTemplateArgs(*TemplateArgs);
1702	Out << 'M';
1703	}
1704	}
1705	}
1706
1707	Out << "Ul";
1708	const FunctionProtoType *Proto = Lambda->getLambdaTypeInfo()->getType()->
1709	getAs<FunctionProtoType>();
1710	mangleBareFunctionType(Proto, /MangleReturnType=/false,
1711	Lambda->getLambdaStaticInvoker());
1712	Out << "E";
1713
1714	// The number is omitted for the first closure type with a given
1715	// <lambda-sig> in a given context; it is n-2 for the nth closure type
1716	// (in lexical order) with that same <lambda-sig> and context.
1717	//
1718	// The AST keeps track of the number for us.
1719	unsigned Number = Lambda->getLambdaManglingNumber();
1720	(0) . __assert_fail ("Number > 0 && \"Lambda should be mangled as an unnamed class\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 1720, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(Number > 0 && "Lambda should be mangled as an unnamed class");
1721	if (Number > 1)
1722	mangleNumber(Number - 2);
1723	Out << '_';
1724	}
1725
1726	void CXXNameMangler::manglePrefix(NestedNameSpecifier *qualifier) {
1727	switch (qualifier->getKind()) {
1728	case NestedNameSpecifier::Global:
1729	// nothing
1730	return;
1731
1732	case NestedNameSpecifier::Super:
1733	llvm_unreachable("Can't mangle __super specifier");
1734
1735	case NestedNameSpecifier::Namespace:
1736	mangleName(qualifier->getAsNamespace());
1737	return;
1738
1739	case NestedNameSpecifier::NamespaceAlias:
1740	mangleName(qualifier->getAsNamespaceAlias()->getNamespace());
1741	return;
1742
1743	case NestedNameSpecifier::TypeSpec:
1744	case NestedNameSpecifier::TypeSpecWithTemplate:
1745	manglePrefix(QualType(qualifier->getAsType(), 0));
1746	return;
1747
1748	case NestedNameSpecifier::Identifier:
1749	// Member expressions can have these without prefixes, but that
1750	// should end up in mangleUnresolvedPrefix instead.
1751	getPrefix()", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 1751, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(qualifier->getPrefix());
1752	manglePrefix(qualifier->getPrefix());
1753
1754	mangleSourceName(qualifier->getAsIdentifier());
1755	return;
1756	}
1757
1758	llvm_unreachable("unexpected nested name specifier");
1759	}
1760
1761	void CXXNameMangler::manglePrefix(const DeclContext *DC, bool NoFunction) {
1762	// <prefix> ::= <prefix> <unqualified-name>
1763	// ::= <template-prefix> <template-args>
1764	// ::= <template-param>
1765	// ::= # empty
1766	// ::= <substitution>
1767
1768	DC = IgnoreLinkageSpecDecls(DC);
1769
1770	if (DC->isTranslationUnit())
1771	return;
1772
1773	if (NoFunction && isLocalContainerContext(DC))
1774	return;
1775
1776	assert(!isLocalContainerContext(DC));
1777
1778	const NamedDecl *ND = cast<NamedDecl>(DC);
1779	if (mangleSubstitution(ND))
1780	return;
1781
1782	// Check if we have a template.
1783	const TemplateArgumentList *TemplateArgs = nullptr;
1784	if (const TemplateDecl *TD = isTemplate(ND, TemplateArgs)) {
1785	mangleTemplatePrefix(TD);
1786	mangleTemplateArgs(*TemplateArgs);
1787	} else {
1788	manglePrefix(getEffectiveDeclContext(ND), NoFunction);
1789	mangleUnqualifiedName(ND, nullptr);
1790	}
1791
1792	addSubstitution(ND);
1793	}
1794
1795	void CXXNameMangler::mangleTemplatePrefix(TemplateName Template) {
1796	// <template-prefix> ::= <prefix> <template unqualified-name>
1797	// ::= <template-param>
1798	// ::= <substitution>
1799	if (TemplateDecl *TD = Template.getAsTemplateDecl())
1800	return mangleTemplatePrefix(TD);
1801
1802	if (QualifiedTemplateName *Qualified = Template.getAsQualifiedTemplateName())
1803	manglePrefix(Qualified->getQualifier());
1804
1805	if (OverloadedTemplateStorage *Overloaded
1806	= Template.getAsOverloadedTemplate()) {
1807	mangleUnqualifiedName(nullptr, (*Overloaded->begin())->getDeclName(),
1808	UnknownArity, nullptr);
1809	return;
1810	}
1811
1812	DependentTemplateName *Dependent = Template.getAsDependentTemplateName();
1813	(0) . __assert_fail ("Dependent && \"Unknown template name kind?\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 1813, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(Dependent && "Unknown template name kind?");
1814	if (NestedNameSpecifier *Qualifier = Dependent->getQualifier())
1815	manglePrefix(Qualifier);
1816	mangleUnscopedTemplateName(Template, /* AdditionalAbiTags */ nullptr);
1817	}
1818
1819	void CXXNameMangler::mangleTemplatePrefix(const TemplateDecl *ND,
1820	bool NoFunction) {
1821	// <template-prefix> ::= <prefix> <template unqualified-name>
1822	// ::= <template-param>
1823	// ::= <substitution>
1824	// <template-template-param> ::= <template-param>
1825	// <substitution>
1826
1827	if (mangleSubstitution(ND))
1828	return;
1829
1830	// <template-template-param> ::= <template-param>
1831	if (const auto *TTP = dyn_cast<TemplateTemplateParmDecl>(ND)) {
1832	mangleTemplateParameter(TTP->getIndex());
1833	} else {
1834	manglePrefix(getEffectiveDeclContext(ND), NoFunction);
1835	if (isa<BuiltinTemplateDecl>(ND))
1836	mangleUnqualifiedName(ND, nullptr);
1837	else
1838	mangleUnqualifiedName(ND->getTemplatedDecl(), nullptr);
1839	}
1840
1841	addSubstitution(ND);
1842	}
1843
1844	/// Mangles a template name under the production <type>. Required for
1845	/// template template arguments.
1846	/// <type> ::= <class-enum-type>
1847	/// ::= <template-param>
1848	/// ::= <substitution>
1849	void CXXNameMangler::mangleType(TemplateName TN) {
1850	if (mangleSubstitution(TN))
1851	return;
1852
1853	TemplateDecl *TD = nullptr;
1854
1855	switch (TN.getKind()) {
1856	case TemplateName::QualifiedTemplate:
1857	TD = TN.getAsQualifiedTemplateName()->getTemplateDecl();
1858	goto HaveDecl;
1859
1860	case TemplateName::Template:
1861	TD = TN.getAsTemplateDecl();
1862	goto HaveDecl;
1863
1864	HaveDecl:
1865	if (isa<TemplateTemplateParmDecl>(TD))
1866	mangleTemplateParameter(cast<TemplateTemplateParmDecl>(TD)->getIndex());
1867	else
1868	mangleName(TD);
1869	break;
1870
1871	case TemplateName::OverloadedTemplate:
1872	llvm_unreachable("can't mangle an overloaded template name as a <type>");
1873
1874	case TemplateName::DependentTemplate: {
1875	const DependentTemplateName *Dependent = TN.getAsDependentTemplateName();
1876	isIdentifier()", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 1876, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(Dependent->isIdentifier());
1877
1878	// <class-enum-type> ::= <name>
1879	// <name> ::= <nested-name>
1880	mangleUnresolvedPrefix(Dependent->getQualifier());
1881	mangleSourceName(Dependent->getIdentifier());
1882	break;
1883	}
1884
1885	case TemplateName::SubstTemplateTemplateParm: {
1886	// Substituted template parameters are mangled as the substituted
1887	// template. This will check for the substitution twice, which is
1888	// fine, but we have to return early so that we don't try to add
1889	// the substitution twice.
1890	SubstTemplateTemplateParmStorage *subst
1891	= TN.getAsSubstTemplateTemplateParm();
1892	mangleType(subst->getReplacement());
1893	return;
1894	}
1895
1896	case TemplateName::SubstTemplateTemplateParmPack: {
1897	// FIXME: not clear how to mangle this!
1898	// template <template <class> class T...> class A {
1899	// template <template <class> class U...> void foo(B<T,U> x...);
1900	// };
1901	Out << "_SUBSTPACK_";
1902	break;
1903	}
1904	}
1905
1906	addSubstitution(TN);
1907	}
1908
1909	bool CXXNameMangler::mangleUnresolvedTypeOrSimpleId(QualType Ty,
1910	StringRef Prefix) {
1911	// Only certain other types are valid as prefixes; enumerate them.
1912	switch (Ty->getTypeClass()) {
1913	case Type::Builtin:
1914	case Type::Complex:
1915	case Type::Adjusted:
1916	case Type::Decayed:
1917	case Type::Pointer:
1918	case Type::BlockPointer:
1919	case Type::LValueReference:
1920	case Type::RValueReference:
1921	case Type::MemberPointer:
1922	case Type::ConstantArray:
1923	case Type::IncompleteArray:
1924	case Type::VariableArray:
1925	case Type::DependentSizedArray:
1926	case Type::DependentAddressSpace:
1927	case Type::DependentVector:
1928	case Type::DependentSizedExtVector:
1929	case Type::Vector:
1930	case Type::ExtVector:
1931	case Type::FunctionProto:
1932	case Type::FunctionNoProto:
1933	case Type::Paren:
1934	case Type::Attributed:
1935	case Type::Auto:
1936	case Type::DeducedTemplateSpecialization:
1937	case Type::PackExpansion:
1938	case Type::ObjCObject:
1939	case Type::ObjCInterface:
1940	case Type::ObjCObjectPointer:
1941	case Type::ObjCTypeParam:
1942	case Type::Atomic:
1943	case Type::Pipe:
1944	llvm_unreachable("type is illegal as a nested name specifier");
1945
1946	case Type::SubstTemplateTypeParmPack:
1947	// FIXME: not clear how to mangle this!
1948	// template <class T...> class A {
1949	// template <class U...> void foo(decltype(T::foo(U())) x...);
1950	// };
1951	Out << "_SUBSTPACK_";
1952	break;
1953
1954	// <unresolved-type> ::= <template-param>
1955	// ::= <decltype>
1956	// ::= <template-template-param> <template-args>
1957	// (this last is not official yet)
1958	case Type::TypeOfExpr:
1959	case Type::TypeOf:
1960	case Type::Decltype:
1961	case Type::TemplateTypeParm:
1962	case Type::UnaryTransform:
1963	case Type::SubstTemplateTypeParm:
1964	unresolvedType:
1965	// Some callers want a prefix before the mangled type.
1966	Out << Prefix;
1967
1968	// This seems to do everything we want. It's not really
1969	// sanctioned for a substituted template parameter, though.
1970	mangleType(Ty);
1971
1972	// We never want to print 'E' directly after an unresolved-type,
1973	// so we return directly.
1974	return true;
1975
1976	case Type::Typedef:
1977	mangleSourceNameWithAbiTags(cast<TypedefType>(Ty)->getDecl());
1978	break;
1979
1980	case Type::UnresolvedUsing:
1981	mangleSourceNameWithAbiTags(
1982	cast<UnresolvedUsingType>(Ty)->getDecl());
1983	break;
1984
1985	case Type::Enum:
1986	case Type::Record:
1987	mangleSourceNameWithAbiTags(cast<TagType>(Ty)->getDecl());
1988	break;
1989
1990	case Type::TemplateSpecialization: {
1991	const TemplateSpecializationType *TST =
1992	cast<TemplateSpecializationType>(Ty);
1993	TemplateName TN = TST->getTemplateName();
1994	switch (TN.getKind()) {
1995	case TemplateName::Template:
1996	case TemplateName::QualifiedTemplate: {
1997	TemplateDecl *TD = TN.getAsTemplateDecl();
1998
1999	// If the base is a template template parameter, this is an
2000	// unresolved type.
2001	(0) . __assert_fail ("TD && \"no template for template specialization type\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 2001, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(TD && "no template for template specialization type");
2002	if (isa<TemplateTemplateParmDecl>(TD))
2003	goto unresolvedType;
2004
2005	mangleSourceNameWithAbiTags(TD);
2006	break;
2007	}
2008
2009	case TemplateName::OverloadedTemplate:
2010	case TemplateName::DependentTemplate:
2011	llvm_unreachable("invalid base for a template specialization type");
2012
2013	case TemplateName::SubstTemplateTemplateParm: {
2014	SubstTemplateTemplateParmStorage *subst =
2015	TN.getAsSubstTemplateTemplateParm();
2016	mangleExistingSubstitution(subst->getReplacement());
2017	break;
2018	}
2019
2020	case TemplateName::SubstTemplateTemplateParmPack: {
2021	// FIXME: not clear how to mangle this!
2022	// template <template <class U> class T...> class A {
2023	// template <class U...> void foo(decltype(T<U>::foo) x...);
2024	// };
2025	Out << "_SUBSTPACK_";
2026	break;
2027	}
2028	}
2029
2030	mangleTemplateArgs(TST->getArgs(), TST->getNumArgs());
2031	break;
2032	}
2033
2034	case Type::InjectedClassName:
2035	mangleSourceNameWithAbiTags(
2036	cast<InjectedClassNameType>(Ty)->getDecl());
2037	break;
2038
2039	case Type::DependentName:
2040	mangleSourceName(cast<DependentNameType>(Ty)->getIdentifier());
2041	break;
2042
2043	case Type::DependentTemplateSpecialization: {
2044	const DependentTemplateSpecializationType *DTST =
2045	cast<DependentTemplateSpecializationType>(Ty);
2046	mangleSourceName(DTST->getIdentifier());
2047	mangleTemplateArgs(DTST->getArgs(), DTST->getNumArgs());
2048	break;
2049	}
2050
2051	case Type::Elaborated:
2052	return mangleUnresolvedTypeOrSimpleId(
2053	cast<ElaboratedType>(Ty)->getNamedType(), Prefix);
2054	}
2055
2056	return false;
2057	}
2058
2059	void CXXNameMangler::mangleOperatorName(DeclarationName Name, unsigned Arity) {
2060	switch (Name.getNameKind()) {
2061	case DeclarationName::CXXConstructorName:
2062	case DeclarationName::CXXDestructorName:
2063	case DeclarationName::CXXDeductionGuideName:
2064	case DeclarationName::CXXUsingDirective:
2065	case DeclarationName::Identifier:
2066	case DeclarationName::ObjCMultiArgSelector:
2067	case DeclarationName::ObjCOneArgSelector:
2068	case DeclarationName::ObjCZeroArgSelector:
2069	llvm_unreachable("Not an operator name");
2070
2071	case DeclarationName::CXXConversionFunctionName:
2072	// <operator-name> ::= cv <type> # (cast)
2073	Out << "cv";
2074	mangleType(Name.getCXXNameType());
2075	break;
2076
2077	case DeclarationName::CXXLiteralOperatorName:
2078	Out << "li";
2079	mangleSourceName(Name.getCXXLiteralIdentifier());
2080	return;
2081
2082	case DeclarationName::CXXOperatorName:
2083	mangleOperatorName(Name.getCXXOverloadedOperator(), Arity);
2084	break;
2085	}
2086	}
2087
2088	void
2089	CXXNameMangler::mangleOperatorName(OverloadedOperatorKind OO, unsigned Arity) {
2090	switch (OO) {
2091	// <operator-name> ::= nw # new
2092	case OO_New: Out << "nw"; break;
2093	// ::= na # new[]
2094	case OO_Array_New: Out << "na"; break;
2095	// ::= dl # delete
2096	case OO_Delete: Out << "dl"; break;
2097	// ::= da # delete[]
2098	case OO_Array_Delete: Out << "da"; break;
2099	// ::= ps # + (unary)
2100	// ::= pl # + (binary or unknown)
2101	case OO_Plus:
2102	Out << (Arity == 1? "ps" : "pl"); break;
2103	// ::= ng # - (unary)
2104	// ::= mi # - (binary or unknown)
2105	case OO_Minus:
2106	Out << (Arity == 1? "ng" : "mi"); break;
2107	// ::= ad # & (unary)
2108	// ::= an # & (binary or unknown)
2109	case OO_Amp:
2110	Out << (Arity == 1? "ad" : "an"); break;
2111	// ::= de # * (unary)
2112	// ::= ml # * (binary or unknown)
2113	case OO_Star:
2114	// Use binary when unknown.
2115	Out << (Arity == 1? "de" : "ml"); break;
2116	// ::= co # ~
2117	case OO_Tilde: Out << "co"; break;
2118	// ::= dv # /
2119	case OO_Slash: Out << "dv"; break;
2120	// ::= rm # %
2121	case OO_Percent: Out << "rm"; break;
2122	// ::= or # \|
2123	case OO_Pipe: Out << "or"; break;
2124	// ::= eo # ^
2125	case OO_Caret: Out << "eo"; break;
2126	// ::= aS # =
2127	case OO_Equal: Out << "aS"; break;
2128	// ::= pL # +=
2129	case OO_PlusEqual: Out << "pL"; break;
2130	// ::= mI # -=
2131	case OO_MinusEqual: Out << "mI"; break;
2132	// ::= mL # *=
2133	case OO_StarEqual: Out << "mL"; break;
2134	// ::= dV # /=
2135	case OO_SlashEqual: Out << "dV"; break;
2136	// ::= rM # %=
2137	case OO_PercentEqual: Out << "rM"; break;
2138	// ::= aN # &=
2139	case OO_AmpEqual: Out << "aN"; break;
2140	// ::= oR # \|=
2141	case OO_PipeEqual: Out << "oR"; break;
2142	// ::= eO # ^=
2143	case OO_CaretEqual: Out << "eO"; break;
2144	// ::= ls # <<
2145	case OO_LessLess: Out << "ls"; break;
2146	// ::= rs # >>
2147	case OO_GreaterGreater: Out << "rs"; break;
2148	// ::= lS # <<=
2149	case OO_LessLessEqual: Out << "lS"; break;
2150	// ::= rS # >>=
2151	case OO_GreaterGreaterEqual: Out << "rS"; break;
2152	// ::= eq # ==
2153	case OO_EqualEqual: Out << "eq"; break;
2154	// ::= ne # !=
2155	case OO_ExclaimEqual: Out << "ne"; break;
2156	// ::= lt # <
2157	case OO_Less: Out << "lt"; break;
2158	// ::= gt # >
2159	case OO_Greater: Out << "gt"; break;
2160	// ::= le # <=
2161	case OO_LessEqual: Out << "le"; break;
2162	// ::= ge # >=
2163	case OO_GreaterEqual: Out << "ge"; break;
2164	// ::= nt # !
2165	case OO_Exclaim: Out << "nt"; break;
2166	// ::= aa # &&
2167	case OO_AmpAmp: Out << "aa"; break;
2168	// ::= oo # \|\|
2169	case OO_PipePipe: Out << "oo"; break;
2170	// ::= pp # ++
2171	case OO_PlusPlus: Out << "pp"; break;
2172	// ::= mm # --
2173	case OO_MinusMinus: Out << "mm"; break;
2174	// ::= cm # ,
2175	case OO_Comma: Out << "cm"; break;
2176	// ::= pm # ->*
2177	case OO_ArrowStar: Out << "pm"; break;
2178	// ::= pt # ->
2179	case OO_Arrow: Out << "pt"; break;
2180	// ::= cl # ()
2181	case OO_Call: Out << "cl"; break;
2182	// ::= ix # []
2183	case OO_Subscript: Out << "ix"; break;
2184
2185	// ::= qu # ?
2186	// The conditional operator can't be overloaded, but we still handle it when
2187	// mangling expressions.
2188	case OO_Conditional: Out << "qu"; break;
2189	// Proposal on cxx-abi-dev, 2015-10-21.
2190	// ::= aw # co_await
2191	case OO_Coawait: Out << "aw"; break;
2192	// Proposed in cxx-abi github issue 43.
2193	// ::= ss # <=>
2194	case OO_Spaceship: Out << "ss"; break;
2195
2196	case OO_None:
2197	case NUM_OVERLOADED_OPERATORS:
2198	llvm_unreachable("Not an overloaded operator");
2199	}
2200	}
2201
2202	void CXXNameMangler::mangleQualifiers(Qualifiers Quals, const DependentAddressSpaceType *DAST) {
2203	// Vendor qualifiers come first and if they are order-insensitive they must
2204	// be emitted in reversed alphabetical order, see Itanium ABI 5.1.5.
2205
2206	// <type> ::= U <addrspace-expr>
2207	if (DAST) {
2208	Out << "U2ASI";
2209	mangleExpression(DAST->getAddrSpaceExpr());
2210	Out << "E";
2211	}
2212
2213	// Address space qualifiers start with an ordinary letter.
2214	if (Quals.hasAddressSpace()) {
2215	// Address space extension:
2216	//
2217	// <type> ::= U <target-addrspace>
2218	// <type> ::= U <OpenCL-addrspace>
2219	// <type> ::= U <CUDA-addrspace>
2220
2221	SmallString<64> ASString;
2222	LangAS AS = Quals.getAddressSpace();
2223
2224	if (Context.getASTContext().addressSpaceMapManglingFor(AS)) {
2225	// <target-addrspace> ::= "AS" <address-space-number>
2226	unsigned TargetAS = Context.getASTContext().getTargetAddressSpace(AS);
2227	if (TargetAS != 0)
2228	ASString = "AS" + llvm::utostr(TargetAS);
2229	} else {
2230	switch (AS) {
2231	default: llvm_unreachable("Not a language specific address space");
2232	// <OpenCL-addrspace> ::= "CL" [ "global" \| "local" \| "constant" \|
2233	// "private"\| "generic" ]
2234	case LangAS::opencl_global: ASString = "CLglobal"; break;
2235	case LangAS::opencl_local: ASString = "CLlocal"; break;
2236	case LangAS::opencl_constant: ASString = "CLconstant"; break;
2237	case LangAS::opencl_private: ASString = "CLprivate"; break;
2238	case LangAS::opencl_generic: ASString = "CLgeneric"; break;
2239	// <CUDA-addrspace> ::= "CU" [ "device" \| "constant" \| "shared" ]
2240	case LangAS::cuda_device: ASString = "CUdevice"; break;
2241	case LangAS::cuda_constant: ASString = "CUconstant"; break;
2242	case LangAS::cuda_shared: ASString = "CUshared"; break;
2243	}
2244	}
2245	if (!ASString.empty())
2246	mangleVendorQualifier(ASString);
2247	}
2248
2249	// The ARC ownership qualifiers start with underscores.
2250	// Objective-C ARC Extension:
2251	//
2252	// <type> ::= U "__strong"
2253	// <type> ::= U "__weak"
2254	// <type> ::= U "__autoreleasing"
2255	//
2256	// Note: we emit __weak first to preserve the order as
2257	// required by the Itanium ABI.
2258	if (Quals.getObjCLifetime() == Qualifiers::OCL_Weak)
2259	mangleVendorQualifier("__weak");
2260
2261	// __unaligned (from -fms-extensions)
2262	if (Quals.hasUnaligned())
2263	mangleVendorQualifier("__unaligned");
2264
2265	// Remaining ARC ownership qualifiers.
2266	switch (Quals.getObjCLifetime()) {
2267	case Qualifiers::OCL_None:
2268	break;
2269
2270	case Qualifiers::OCL_Weak:
2271	// Do nothing as we already handled this case above.
2272	break;
2273
2274	case Qualifiers::OCL_Strong:
2275	mangleVendorQualifier("__strong");
2276	break;
2277
2278	case Qualifiers::OCL_Autoreleasing:
2279	mangleVendorQualifier("__autoreleasing");
2280	break;
2281
2282	case Qualifiers::OCL_ExplicitNone:
2283	// The __unsafe_unretained qualifier is not mangled, so that
2284	// __unsafe_unretained types in ARC produce the same manglings as the
2285	// equivalent (but, naturally, unqualified) types in non-ARC, providing
2286	// better ABI compatibility.
2287	//
2288	// It's safe to do this because unqualified 'id' won't show up
2289	// in any type signatures that need to be mangled.
2290	break;
2291	}
2292
2293	// <CV-qualifiers> ::= [r] [V] [K] # restrict (C99), volatile, const
2294	if (Quals.hasRestrict())
2295	Out << 'r';
2296	if (Quals.hasVolatile())
2297	Out << 'V';
2298	if (Quals.hasConst())
2299	Out << 'K';
2300	}
2301
2302	void CXXNameMangler::mangleVendorQualifier(StringRef name) {
2303	Out << 'U' << name.size() << name;
2304	}
2305
2306	void CXXNameMangler::mangleRefQualifier(RefQualifierKind RefQualifier) {
2307	// <ref-qualifier> ::= R # lvalue reference
2308	// ::= O # rvalue-reference
2309	switch (RefQualifier) {
2310	case RQ_None:
2311	break;
2312
2313	case RQ_LValue:
2314	Out << 'R';
2315	break;
2316
2317	case RQ_RValue:
2318	Out << 'O';
2319	break;
2320	}
2321	}
2322
2323	void CXXNameMangler::mangleObjCMethodName(const ObjCMethodDecl *MD) {
2324	Context.mangleObjCMethodName(MD, Out);
2325	}
2326
2327	static bool isTypeSubstitutable(Qualifiers Quals, const Type *Ty,
2328	ASTContext &Ctx) {
2329	if (Quals)
2330	return true;
2331	if (Ty->isSpecificBuiltinType(BuiltinType::ObjCSel))
2332	return true;
2333	if (Ty->isOpenCLSpecificType())
2334	return true;
2335	if (Ty->isBuiltinType())
2336	return false;
2337	// Through to Clang 6.0, we accidentally treated undeduced auto types as
2338	// substitution candidates.
2339	if (Ctx.getLangOpts().getClangABICompat() > LangOptions::ClangABI::Ver6 &&
2340	isa<AutoType>(Ty))
2341	return false;
2342	return true;
2343	}
2344
2345	void CXXNameMangler::mangleType(QualType T) {
2346	// If our type is instantiation-dependent but not dependent, we mangle
2347	// it as it was written in the source, removing any top-level sugar.
2348	// Otherwise, use the canonical type.
2349	//
2350	// FIXME: This is an approximation of the instantiation-dependent name
2351	// mangling rules, since we should really be using the type as written and
2352	// augmented via semantic analysis (i.e., with implicit conversions and
2353	// default template arguments) for any instantiation-dependent type.
2354	// Unfortunately, that requires several changes to our AST:
2355	// - Instantiation-dependent TemplateSpecializationTypes will need to be
2356	// uniqued, so that we can handle substitutions properly
2357	// - Default template arguments will need to be represented in the
2358	// TemplateSpecializationType, since they need to be mangled even though
2359	// they aren't written.
2360	// - Conversions on non-type template arguments need to be expressed, since
2361	// they can affect the mangling of sizeof/alignof.
2362	//
2363	// FIXME: This is wrong when mapping to the canonical type for a dependent
2364	// type discards instantiation-dependent portions of the type, such as for:
2365	//
2366	// template<typename T, int N> void f(T (&)[sizeof(N)]);
2367	// template<typename T> void f(T() throw(typename T::type)); (pre-C++17)
2368	//
2369	// It's also wrong in the opposite direction when instantiation-dependent,
2370	// canonically-equivalent types differ in some irrelevant portion of inner
2371	// type sugar. In such cases, we fail to form correct substitutions, eg:
2372	//
2373	// template<int N> void f(A<sizeof(N)> , A<sizeof(N)> ());
2374	//
2375	// We should instead canonicalize the non-instantiation-dependent parts,
2376	// regardless of whether the type as a whole is dependent or instantiation
2377	// dependent.
2378	if (!T->isInstantiationDependentType() \|\| T->isDependentType())
2379	T = T.getCanonicalType();
2380	else {
2381	// Desugar any types that are purely sugar.
2382	do {
2383	// Don't desugar through template specialization types that aren't
2384	// type aliases. We need to mangle the template arguments as written.
2385	if (const TemplateSpecializationType *TST
2386	= dyn_cast<TemplateSpecializationType>(T))
2387	if (!TST->isTypeAlias())
2388	break;
2389
2390	QualType Desugared
2391	= T.getSingleStepDesugaredType(Context.getASTContext());
2392	if (Desugared == T)
2393	break;
2394
2395	T = Desugared;
2396	} while (true);
2397	}
2398	SplitQualType split = T.split();
2399	Qualifiers quals = split.Quals;
2400	const Type *ty = split.Ty;
2401
2402	bool isSubstitutable =
2403	isTypeSubstitutable(quals, ty, Context.getASTContext());
2404	if (isSubstitutable && mangleSubstitution(T))
2405	return;
2406
2407	// If we're mangling a qualified array type, push the qualifiers to
2408	// the element type.
2409	if (quals && isa<ArrayType>(T)) {
2410	ty = Context.getASTContext().getAsArrayType(T);
2411	quals = Qualifiers();
2412
2413	// Note that we don't update T: we want to add the
2414	// substitution at the original type.
2415	}
2416
2417	if (quals \|\| ty->isDependentAddressSpaceType()) {
2418	if (const DependentAddressSpaceType *DAST =
2419	dyn_cast<DependentAddressSpaceType>(ty)) {
2420	SplitQualType splitDAST = DAST->getPointeeType().split();
2421	mangleQualifiers(splitDAST.Quals, DAST);
2422	mangleType(QualType(splitDAST.Ty, 0));
2423	} else {
2424	mangleQualifiers(quals);
2425
2426	// Recurse: even if the qualified type isn't yet substitutable,
2427	// the unqualified type might be.
2428	mangleType(QualType(ty, 0));
2429	}
2430	} else {
2431	switch (ty->getTypeClass()) {
2432	#define ABSTRACT_TYPE(CLASS, PARENT)
2433	#define NON_CANONICAL_TYPE(CLASS, PARENT) \
2434	case Type::CLASS: \
2435	llvm_unreachable("can't mangle non-canonical type " #CLASS "Type"); \
2436	return;
2437	#define TYPE(CLASS, PARENT) \
2438	case Type::CLASS: \
2439	mangleType(static_cast<const CLASS##Type*>(ty)); \
2440	break;
2441	#include "clang/AST/TypeNodes.def"
2442	}
2443	}
2444
2445	// Add the substitution.
2446	if (isSubstitutable)
2447	addSubstitution(T);
2448	}
2449
2450	void CXXNameMangler::mangleNameOrStandardSubstitution(const NamedDecl *ND) {
2451	if (!mangleStandardSubstitution(ND))
2452	mangleName(ND);
2453	}
2454
2455	void CXXNameMangler::mangleType(const BuiltinType *T) {
2456	// <type> ::= <builtin-type>
2457	// <builtin-type> ::= v # void
2458	// ::= w # wchar_t
2459	// ::= b # bool
2460	// ::= c # char
2461	// ::= a # signed char
2462	// ::= h # unsigned char
2463	// ::= s # short
2464	// ::= t # unsigned short
2465	// ::= i # int
2466	// ::= j # unsigned int
2467	// ::= l # long
2468	// ::= m # unsigned long
2469	// ::= x # long long, __int64
2470	// ::= y # unsigned long long, __int64
2471	// ::= n # __int128
2472	// ::= o # unsigned __int128
2473	// ::= f # float
2474	// ::= d # double
2475	// ::= e # long double, __float80
2476	// ::= g # __float128
2477	// UNSUPPORTED: ::= Dd # IEEE 754r decimal floating point (64 bits)
2478	// UNSUPPORTED: ::= De # IEEE 754r decimal floating point (128 bits)
2479	// UNSUPPORTED: ::= Df # IEEE 754r decimal floating point (32 bits)
2480	// ::= Dh # IEEE 754r half-precision floating point (16 bits)
2481	// ::= DF <number> _ # ISO/IEC TS 18661 binary floating point type _FloatN (N bits);
2482	// ::= Di # char32_t
2483	// ::= Ds # char16_t
2484	// ::= Dn # std::nullptr_t (i.e., decltype(nullptr))
2485	// ::= u <source-name> # vendor extended type
2486	std::string type_name;
2487	switch (T->getKind()) {
2488	case BuiltinType::Void:
2489	Out << 'v';
2490	break;
2491	case BuiltinType::Bool:
2492	Out << 'b';
2493	break;
2494	case BuiltinType::Char_U:
2495	case BuiltinType::Char_S:
2496	Out << 'c';
2497	break;
2498	case BuiltinType::UChar:
2499	Out << 'h';
2500	break;
2501	case BuiltinType::UShort:
2502	Out << 't';
2503	break;
2504	case BuiltinType::UInt:
2505	Out << 'j';
2506	break;
2507	case BuiltinType::ULong:
2508	Out << 'm';
2509	break;
2510	case BuiltinType::ULongLong:
2511	Out << 'y';
2512	break;
2513	case BuiltinType::UInt128:
2514	Out << 'o';
2515	break;
2516	case BuiltinType::SChar:
2517	Out << 'a';
2518	break;
2519	case BuiltinType::WChar_S:
2520	case BuiltinType::WChar_U:
2521	Out << 'w';
2522	break;
2523	case BuiltinType::Char8:
2524	Out << "Du";
2525	break;
2526	case BuiltinType::Char16:
2527	Out << "Ds";
2528	break;
2529	case BuiltinType::Char32:
2530	Out << "Di";
2531	break;
2532	case BuiltinType::Short:
2533	Out << 's';
2534	break;
2535	case BuiltinType::Int:
2536	Out << 'i';
2537	break;
2538	case BuiltinType::Long:
2539	Out << 'l';
2540	break;
2541	case BuiltinType::LongLong:
2542	Out << 'x';
2543	break;
2544	case BuiltinType::Int128:
2545	Out << 'n';
2546	break;
2547	case BuiltinType::Float16:
2548	Out << "DF16_";
2549	break;
2550	case BuiltinType::ShortAccum:
2551	case BuiltinType::Accum:
2552	case BuiltinType::LongAccum:
2553	case BuiltinType::UShortAccum:
2554	case BuiltinType::UAccum:
2555	case BuiltinType::ULongAccum:
2556	case BuiltinType::ShortFract:
2557	case BuiltinType::Fract:
2558	case BuiltinType::LongFract:
2559	case BuiltinType::UShortFract:
2560	case BuiltinType::UFract:
2561	case BuiltinType::ULongFract:
2562	case BuiltinType::SatShortAccum:
2563	case BuiltinType::SatAccum:
2564	case BuiltinType::SatLongAccum:
2565	case BuiltinType::SatUShortAccum:
2566	case BuiltinType::SatUAccum:
2567	case BuiltinType::SatULongAccum:
2568	case BuiltinType::SatShortFract:
2569	case BuiltinType::SatFract:
2570	case BuiltinType::SatLongFract:
2571	case BuiltinType::SatUShortFract:
2572	case BuiltinType::SatUFract:
2573	case BuiltinType::SatULongFract:
2574	llvm_unreachable("Fixed point types are disabled for c++");
2575	case BuiltinType::Half:
2576	Out << "Dh";
2577	break;
2578	case BuiltinType::Float:
2579	Out << 'f';
2580	break;
2581	case BuiltinType::Double:
2582	Out << 'd';
2583	break;
2584	case BuiltinType::LongDouble:
2585	Out << (getASTContext().getTargetInfo().useFloat128ManglingForLongDouble()
2586	? 'g'
2587	: 'e');
2588	break;
2589	case BuiltinType::Float128:
2590	if (getASTContext().getTargetInfo().useFloat128ManglingForLongDouble())
2591	Out << "U10__float128"; // Match the GCC mangling
2592	else
2593	Out << 'g';
2594	break;
2595	case BuiltinType::NullPtr:
2596	Out << "Dn";
2597	break;
2598
2599	#define BUILTIN_TYPE(Id, SingletonId)
2600	#define PLACEHOLDER_TYPE(Id, SingletonId) \
2601	case BuiltinType::Id:
2602	#include "clang/AST/BuiltinTypes.def"
2603	case BuiltinType::Dependent:
2604	if (!NullOut)
2605	llvm_unreachable("mangling a placeholder type");
2606	break;
2607	case BuiltinType::ObjCId:
2608	Out << "11objc_object";
2609	break;
2610	case BuiltinType::ObjCClass:
2611	Out << "10objc_class";
2612	break;
2613	case BuiltinType::ObjCSel:
2614	Out << "13objc_selector";
2615	break;
2616	#define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
2617	case BuiltinType::Id: \
2618	type_name = "ocl_" #ImgType "_" #Suffix; \
2619	Out << type_name.size() << type_name; \
2620	break;
2621	#include "clang/Basic/OpenCLImageTypes.def"
2622	case BuiltinType::OCLSampler:
2623	Out << "11ocl_sampler";
2624	break;
2625	case BuiltinType::OCLEvent:
2626	Out << "9ocl_event";
2627	break;
2628	case BuiltinType::OCLClkEvent:
2629	Out << "12ocl_clkevent";
2630	break;
2631	case BuiltinType::OCLQueue:
2632	Out << "9ocl_queue";
2633	break;
2634	case BuiltinType::OCLReserveID:
2635	Out << "13ocl_reserveid";
2636	break;
2637	#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
2638	case BuiltinType::Id: \
2639	type_name = "ocl_" #ExtType; \
2640	Out << type_name.size() << type_name; \
2641	break;
2642	#include "clang/Basic/OpenCLExtensionTypes.def"
2643	}
2644	}
2645
2646	StringRef CXXNameMangler::getCallingConvQualifierName(CallingConv CC) {
2647	switch (CC) {
2648	case CC_C:
2649	return "";
2650
2651	case CC_X86VectorCall:
2652	case CC_X86Pascal:
2653	case CC_X86RegCall:
2654	case CC_AAPCS:
2655	case CC_AAPCS_VFP:
2656	case CC_AArch64VectorCall:
2657	case CC_IntelOclBicc:
2658	case CC_SpirFunction:
2659	case CC_OpenCLKernel:
2660	case CC_PreserveMost:
2661	case CC_PreserveAll:
2662	// FIXME: we should be mangling all of the above.
2663	return "";
2664
2665	case CC_X86ThisCall:
2666	// FIXME: To match mingw GCC, thiscall should only be mangled in when it is
2667	// used explicitly. At this point, we don't have that much information in
2668	// the AST, since clang tends to bake the convention into the canonical
2669	// function type. thiscall only rarely used explicitly, so don't mangle it
2670	// for now.
2671	return "";
2672
2673	case CC_X86StdCall:
2674	return "stdcall";
2675	case CC_X86FastCall:
2676	return "fastcall";
2677	case CC_X86_64SysV:
2678	return "sysv_abi";
2679	case CC_Win64:
2680	return "ms_abi";
2681	case CC_Swift:
2682	return "swiftcall";
2683	}
2684	llvm_unreachable("bad calling convention");
2685	}
2686
2687	void CXXNameMangler::mangleExtFunctionInfo(const FunctionType *T) {
2688	// Fast path.
2689	if (T->getExtInfo() == FunctionType::ExtInfo())
2690	return;
2691
2692	// Vendor-specific qualifiers are emitted in reverse alphabetical order.
2693	// This will get more complicated in the future if we mangle other
2694	// things here; but for now, since we mangle ns_returns_retained as
2695	// a qualifier on the result type, we can get away with this:
2696	StringRef CCQualifier = getCallingConvQualifierName(T->getExtInfo().getCC());
2697	if (!CCQualifier.empty())
2698	mangleVendorQualifier(CCQualifier);
2699
2700	// FIXME: regparm
2701	// FIXME: noreturn
2702	}
2703
2704	void
2705	CXXNameMangler::mangleExtParameterInfo(FunctionProtoType::ExtParameterInfo PI) {
2706	// Vendor-specific qualifiers are emitted in reverse alphabetical order.
2707
2708	// Note that these are not substitution candidates. Demanglers might
2709	// have trouble with this if the parameter type is fully substituted.
2710
2711	switch (PI.getABI()) {
2712	case ParameterABI::Ordinary:
2713	break;
2714
2715	// All of these start with "swift", so they come before "ns_consumed".
2716	case ParameterABI::SwiftContext:
2717	case ParameterABI::SwiftErrorResult:
2718	case ParameterABI::SwiftIndirectResult:
2719	mangleVendorQualifier(getParameterABISpelling(PI.getABI()));
2720	break;
2721	}
2722
2723	if (PI.isConsumed())
2724	mangleVendorQualifier("ns_consumed");
2725
2726	if (PI.isNoEscape())
2727	mangleVendorQualifier("noescape");
2728	}
2729
2730	// <type> ::= <function-type>
2731	// <function-type> ::= [<CV-qualifiers>] F [Y]
2732	// <bare-function-type> [<ref-qualifier>] E
2733	void CXXNameMangler::mangleType(const FunctionProtoType *T) {
2734	mangleExtFunctionInfo(T);
2735
2736	// Mangle CV-qualifiers, if present. These are 'this' qualifiers,
2737	// e.g. "const" in "int (A::*)() const".
2738	mangleQualifiers(T->getMethodQuals());
2739
2740	// Mangle instantiation-dependent exception-specification, if present,
2741	// per cxx-abi-dev proposal on 2016-10-11.
2742	if (T->hasInstantiationDependentExceptionSpec()) {
2743	if (isComputedNoexcept(T->getExceptionSpecType())) {
2744	Out << "DO";
2745	mangleExpression(T->getNoexceptExpr());
2746	Out << "E";
2747	} else {
2748	getExceptionSpecType() == EST_Dynamic", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 2748, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(T->getExceptionSpecType() == EST_Dynamic);
2749	Out << "Dw";
2750	for (auto ExceptTy : T->exceptions())
2751	mangleType(ExceptTy);
2752	Out << "E";
2753	}
2754	} else if (T->isNothrow()) {
2755	Out << "Do";
2756	}
2757
2758	Out << 'F';
2759
2760	// FIXME: We don't have enough information in the AST to produce the 'Y'
2761	// encoding for extern "C" function types.
2762	mangleBareFunctionType(T, /MangleReturnType=/true);
2763
2764	// Mangle the ref-qualifier, if present.
2765	mangleRefQualifier(T->getRefQualifier());
2766
2767	Out << 'E';
2768	}
2769
2770	void CXXNameMangler::mangleType(const FunctionNoProtoType *T) {
2771	// Function types without prototypes can arise when mangling a function type
2772	// within an overloadable function in C. We mangle these as the absence of any
2773	// parameter types (not even an empty parameter list).
2774	Out << 'F';
2775
2776	FunctionTypeDepthState saved = FunctionTypeDepth.push();
2777
2778	FunctionTypeDepth.enterResultType();
2779	mangleType(T->getReturnType());
2780	FunctionTypeDepth.leaveResultType();
2781
2782	FunctionTypeDepth.pop(saved);
2783	Out << 'E';
2784	}
2785
2786	void CXXNameMangler::mangleBareFunctionType(const FunctionProtoType *Proto,
2787	bool MangleReturnType,
2788	const FunctionDecl *FD) {
2789	// Record that we're in a function type. See mangleFunctionParam
2790	// for details on what we're trying to achieve here.
2791	FunctionTypeDepthState saved = FunctionTypeDepth.push();
2792
2793	// <bare-function-type> ::= <signature type>+
2794	if (MangleReturnType) {
2795	FunctionTypeDepth.enterResultType();
2796
2797	// Mangle ns_returns_retained as an order-sensitive qualifier here.
2798	if (Proto->getExtInfo().getProducesResult() && FD == nullptr)
2799	mangleVendorQualifier("ns_returns_retained");
2800
2801	// Mangle the return type without any direct ARC ownership qualifiers.
2802	QualType ReturnTy = Proto->getReturnType();
2803	if (ReturnTy.getObjCLifetime()) {
2804	auto SplitReturnTy = ReturnTy.split();
2805	SplitReturnTy.Quals.removeObjCLifetime();
2806	ReturnTy = getASTContext().getQualifiedType(SplitReturnTy);
2807	}
2808	mangleType(ReturnTy);
2809
2810	FunctionTypeDepth.leaveResultType();
2811	}
2812
2813	if (Proto->getNumParams() == 0 && !Proto->isVariadic()) {
2814	// <builtin-type> ::= v # void
2815	Out << 'v';
2816
2817	FunctionTypeDepth.pop(saved);
2818	return;
2819	}
2820
2821	getNumParams() == Proto->getNumParams()", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 2821, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(!FD \|\| FD->getNumParams() == Proto->getNumParams());
2822	for (unsigned I = 0, E = Proto->getNumParams(); I != E; ++I) {
2823	// Mangle extended parameter info as order-sensitive qualifiers here.
2824	if (Proto->hasExtParameterInfos() && FD == nullptr) {
2825	mangleExtParameterInfo(Proto->getExtParameterInfo(I));
2826	}
2827
2828	// Mangle the type.
2829	QualType ParamTy = Proto->getParamType(I);
2830	mangleType(Context.getASTContext().getSignatureParameterType(ParamTy));
2831
2832	if (FD) {
2833	if (auto *Attr = FD->getParamDecl(I)->getAttr<PassObjectSizeAttr>()) {
2834	// Attr can only take 1 character, so we can hardcode the length below.
2835	getType() <= 9 && Attr->getType() >= 0", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 2835, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(Attr->getType() <= 9 && Attr->getType() >= 0);
2836	if (Attr->isDynamic())
2837	Out << "U25pass_dynamic_object_size" << Attr->getType();
2838	else
2839	Out << "U17pass_object_size" << Attr->getType();
2840	}
2841	}
2842	}
2843
2844	FunctionTypeDepth.pop(saved);
2845
2846	// <builtin-type> ::= z # ellipsis
2847	if (Proto->isVariadic())
2848	Out << 'z';
2849	}
2850
2851	// <type> ::= <class-enum-type>
2852	// <class-enum-type> ::= <name>
2853	void CXXNameMangler::mangleType(const UnresolvedUsingType *T) {
2854	mangleName(T->getDecl());
2855	}
2856
2857	// <type> ::= <class-enum-type>
2858	// <class-enum-type> ::= <name>
2859	void CXXNameMangler::mangleType(const EnumType *T) {
2860	mangleType(static_cast<const TagType*>(T));
2861	}
2862	void CXXNameMangler::mangleType(const RecordType *T) {
2863	mangleType(static_cast<const TagType*>(T));
2864	}
2865	void CXXNameMangler::mangleType(const TagType *T) {
2866	mangleName(T->getDecl());
2867	}
2868
2869	// <type> ::= <array-type>
2870	// <array-type> ::= A <positive dimension number> _ <element type>
2871	// ::= A [<dimension expression>] _ <element type>
2872	void CXXNameMangler::mangleType(const ConstantArrayType *T) {
2873	Out << 'A' << T->getSize() << '_';
2874	mangleType(T->getElementType());
2875	}
2876	void CXXNameMangler::mangleType(const VariableArrayType *T) {
2877	Out << 'A';
2878	// decayed vla types (size 0) will just be skipped.
2879	if (T->getSizeExpr())
2880	mangleExpression(T->getSizeExpr());
2881	Out << '_';
2882	mangleType(T->getElementType());
2883	}
2884	void CXXNameMangler::mangleType(const DependentSizedArrayType *T) {
2885	Out << 'A';
2886	mangleExpression(T->getSizeExpr());
2887	Out << '_';
2888	mangleType(T->getElementType());
2889	}
2890	void CXXNameMangler::mangleType(const IncompleteArrayType *T) {
2891	Out << "A_";
2892	mangleType(T->getElementType());
2893	}
2894
2895	// <type> ::= <pointer-to-member-type>
2896	// <pointer-to-member-type> ::= M <class type> <member type>
2897	void CXXNameMangler::mangleType(const MemberPointerType *T) {
2898	Out << 'M';
2899	mangleType(QualType(T->getClass(), 0));
2900	QualType PointeeType = T->getPointeeType();
2901	if (const FunctionProtoType *FPT = dyn_cast<FunctionProtoType>(PointeeType)) {
2902	mangleType(FPT);
2903
2904	// Itanium C++ ABI 5.1.8:
2905	//
2906	// The type of a non-static member function is considered to be different,
2907	// for the purposes of substitution, from the type of a namespace-scope or
2908	// static member function whose type appears similar. The types of two
2909	// non-static member functions are considered to be different, for the
2910	// purposes of substitution, if the functions are members of different
2911	// classes. In other words, for the purposes of substitution, the class of
2912	// which the function is a member is considered part of the type of
2913	// function.
2914
2915	// Given that we already substitute member function pointers as a
2916	// whole, the net effect of this rule is just to unconditionally
2917	// suppress substitution on the function type in a member pointer.
2918	// We increment the SeqID here to emulate adding an entry to the
2919	// substitution table.
2920	++SeqID;
2921	} else
2922	mangleType(PointeeType);
2923	}
2924
2925	// <type> ::= <template-param>
2926	void CXXNameMangler::mangleType(const TemplateTypeParmType *T) {
2927	mangleTemplateParameter(T->getIndex());
2928	}
2929
2930	// <type> ::= <template-param>
2931	void CXXNameMangler::mangleType(const SubstTemplateTypeParmPackType *T) {
2932	// FIXME: not clear how to mangle this!
2933	// template <class T...> class A {
2934	// template <class U...> void foo(T(*)(U) x...);
2935	// };
2936	Out << "_SUBSTPACK_";
2937	}
2938
2939	// <type> ::= P <type> # pointer-to
2940	void CXXNameMangler::mangleType(const PointerType *T) {
2941	Out << 'P';
2942	mangleType(T->getPointeeType());
2943	}
2944	void CXXNameMangler::mangleType(const ObjCObjectPointerType *T) {
2945	Out << 'P';
2946	mangleType(T->getPointeeType());
2947	}
2948
2949	// <type> ::= R <type> # reference-to
2950	void CXXNameMangler::mangleType(const LValueReferenceType *T) {
2951	Out << 'R';
2952	mangleType(T->getPointeeType());
2953	}
2954
2955	// <type> ::= O <type> # rvalue reference-to (C++0x)
2956	void CXXNameMangler::mangleType(const RValueReferenceType *T) {
2957	Out << 'O';
2958	mangleType(T->getPointeeType());
2959	}
2960
2961	// <type> ::= C <type> # complex pair (C 2000)
2962	void CXXNameMangler::mangleType(const ComplexType *T) {
2963	Out << 'C';
2964	mangleType(T->getElementType());
2965	}
2966
2967	// ARM's ABI for Neon vector types specifies that they should be mangled as
2968	// if they are structs (to match ARM's initial implementation). The
2969	// vector type must be one of the special types predefined by ARM.
2970	void CXXNameMangler::mangleNeonVectorType(const VectorType *T) {
2971	QualType EltType = T->getElementType();
2972	(0) . __assert_fail ("EltType->isBuiltinType() && \"Neon vector element not a BuiltinType\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 2972, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(EltType->isBuiltinType() && "Neon vector element not a BuiltinType");
2973	const char *EltName = nullptr;
2974	if (T->getVectorKind() == VectorType::NeonPolyVector) {
2975	switch (cast<BuiltinType>(EltType)->getKind()) {
2976	case BuiltinType::SChar:
2977	case BuiltinType::UChar:
2978	EltName = "poly8_t";
2979	break;
2980	case BuiltinType::Short:
2981	case BuiltinType::UShort:
2982	EltName = "poly16_t";
2983	break;
2984	case BuiltinType::ULongLong:
2985	EltName = "poly64_t";
2986	break;
2987	default: llvm_unreachable("unexpected Neon polynomial vector element type");
2988	}
2989	} else {
2990	switch (cast<BuiltinType>(EltType)->getKind()) {
2991	case BuiltinType::SChar: EltName = "int8_t"; break;
2992	case BuiltinType::UChar: EltName = "uint8_t"; break;
2993	case BuiltinType::Short: EltName = "int16_t"; break;
2994	case BuiltinType::UShort: EltName = "uint16_t"; break;
2995	case BuiltinType::Int: EltName = "int32_t"; break;
2996	case BuiltinType::UInt: EltName = "uint32_t"; break;
2997	case BuiltinType::LongLong: EltName = "int64_t"; break;
2998	case BuiltinType::ULongLong: EltName = "uint64_t"; break;
2999	case BuiltinType::Double: EltName = "float64_t"; break;
3000	case BuiltinType::Float: EltName = "float32_t"; break;
3001	case BuiltinType::Half: EltName = "float16_t";break;
3002	default:
3003	llvm_unreachable("unexpected Neon vector element type");
3004	}
3005	}
3006	const char *BaseName = nullptr;
3007	unsigned BitSize = (T->getNumElements() *
3008	getASTContext().getTypeSize(EltType));
3009	if (BitSize == 64)
3010	BaseName = "__simd64_";
3011	else {
3012	(0) . __assert_fail ("BitSize == 128 && \"Neon vector type not 64 or 128 bits\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 3012, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(BitSize == 128 && "Neon vector type not 64 or 128 bits");
3013	BaseName = "__simd128_";
3014	}
3015	Out << strlen(BaseName) + strlen(EltName);
3016	Out << BaseName << EltName;
3017	}
3018
3019	void CXXNameMangler::mangleNeonVectorType(const DependentVectorType *T) {
3020	DiagnosticsEngine &Diags = Context.getDiags();
3021	unsigned DiagID = Diags.getCustomDiagID(
3022	DiagnosticsEngine::Error,
3023	"cannot mangle this dependent neon vector type yet");
3024	Diags.Report(T->getAttributeLoc(), DiagID);
3025	}
3026
3027	static StringRef mangleAArch64VectorBase(const BuiltinType *EltType) {
3028	switch (EltType->getKind()) {
3029	case BuiltinType::SChar:
3030	return "Int8";
3031	case BuiltinType::Short:
3032	return "Int16";
3033	case BuiltinType::Int:
3034	return "Int32";
3035	case BuiltinType::Long:
3036	case BuiltinType::LongLong:
3037	return "Int64";
3038	case BuiltinType::UChar:
3039	return "Uint8";
3040	case BuiltinType::UShort:
3041	return "Uint16";
3042	case BuiltinType::UInt:
3043	return "Uint32";
3044	case BuiltinType::ULong:
3045	case BuiltinType::ULongLong:
3046	return "Uint64";
3047	case BuiltinType::Half:
3048	return "Float16";
3049	case BuiltinType::Float:
3050	return "Float32";
3051	case BuiltinType::Double:
3052	return "Float64";
3053	default:
3054	llvm_unreachable("Unexpected vector element base type");
3055	}
3056	}
3057
3058	// AArch64's ABI for Neon vector types specifies that they should be mangled as
3059	// the equivalent internal name. The vector type must be one of the special
3060	// types predefined by ARM.
3061	void CXXNameMangler::mangleAArch64NeonVectorType(const VectorType *T) {
3062	QualType EltType = T->getElementType();
3063	(0) . __assert_fail ("EltType->isBuiltinType() && \"Neon vector element not a BuiltinType\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 3063, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(EltType->isBuiltinType() && "Neon vector element not a BuiltinType");
3064	unsigned BitSize =
3065	(T->getNumElements() * getASTContext().getTypeSize(EltType));
3066	(void)BitSize; // Silence warning.
3067
3068	(0) . __assert_fail ("(BitSize == 64 \|\| BitSize == 128) && \"Neon vector type not 64 or 128 bits\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 3069, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert((BitSize == 64 \|\| BitSize == 128) &&
3069	(0) . __assert_fail ("(BitSize == 64 \|\| BitSize == 128) && \"Neon vector type not 64 or 128 bits\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 3069, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "Neon vector type not 64 or 128 bits");
3070
3071	StringRef EltName;
3072	if (T->getVectorKind() == VectorType::NeonPolyVector) {
3073	switch (cast<BuiltinType>(EltType)->getKind()) {
3074	case BuiltinType::UChar:
3075	EltName = "Poly8";
3076	break;
3077	case BuiltinType::UShort:
3078	EltName = "Poly16";
3079	break;
3080	case BuiltinType::ULong:
3081	case BuiltinType::ULongLong:
3082	EltName = "Poly64";
3083	break;
3084	default:
3085	llvm_unreachable("unexpected Neon polynomial vector element type");
3086	}
3087	} else
3088	EltName = mangleAArch64VectorBase(cast<BuiltinType>(EltType));
3089
3090	std::string TypeName =
3091	("__" + EltName + "x" + Twine(T->getNumElements()) + "_t").str();
3092	Out << TypeName.length() << TypeName;
3093	}
3094	void CXXNameMangler::mangleAArch64NeonVectorType(const DependentVectorType *T) {
3095	DiagnosticsEngine &Diags = Context.getDiags();
3096	unsigned DiagID = Diags.getCustomDiagID(
3097	DiagnosticsEngine::Error,
3098	"cannot mangle this dependent neon vector type yet");
3099	Diags.Report(T->getAttributeLoc(), DiagID);
3100	}
3101
3102	// GNU extension: vector types
3103	// <type> ::= <vector-type>
3104	// <vector-type> ::= Dv <positive dimension number> _
3105	// <extended element type>
3106	// ::= Dv [<dimension expression>] _ <element type>
3107	// <extended element type> ::= <element type>
3108	// ::= p # AltiVec vector pixel
3109	// ::= b # Altivec vector bool
3110	void CXXNameMangler::mangleType(const VectorType *T) {
3111	if ((T->getVectorKind() == VectorType::NeonVector \|\|
3112	T->getVectorKind() == VectorType::NeonPolyVector)) {
3113	llvm::Triple Target = getASTContext().getTargetInfo().getTriple();
3114	llvm::Triple::ArchType Arch =
3115	getASTContext().getTargetInfo().getTriple().getArch();
3116	if ((Arch == llvm::Triple::aarch64 \|\|
3117	Arch == llvm::Triple::aarch64_be) && !Target.isOSDarwin())
3118	mangleAArch64NeonVectorType(T);
3119	else
3120	mangleNeonVectorType(T);
3121	return;
3122	}
3123	Out << "Dv" << T->getNumElements() << '_';
3124	if (T->getVectorKind() == VectorType::AltiVecPixel)
3125	Out << 'p';
3126	else if (T->getVectorKind() == VectorType::AltiVecBool)
3127	Out << 'b';
3128	else
3129	mangleType(T->getElementType());
3130	}
3131
3132	void CXXNameMangler::mangleType(const DependentVectorType *T) {
3133	if ((T->getVectorKind() == VectorType::NeonVector \|\|
3134	T->getVectorKind() == VectorType::NeonPolyVector)) {
3135	llvm::Triple Target = getASTContext().getTargetInfo().getTriple();
3136	llvm::Triple::ArchType Arch =
3137	getASTContext().getTargetInfo().getTriple().getArch();
3138	if ((Arch == llvm::Triple::aarch64 \|\| Arch == llvm::Triple::aarch64_be) &&
3139	!Target.isOSDarwin())
3140	mangleAArch64NeonVectorType(T);
3141	else
3142	mangleNeonVectorType(T);
3143	return;
3144	}
3145
3146	Out << "Dv";
3147	mangleExpression(T->getSizeExpr());
3148	Out << '_';
3149	if (T->getVectorKind() == VectorType::AltiVecPixel)
3150	Out << 'p';
3151	else if (T->getVectorKind() == VectorType::AltiVecBool)
3152	Out << 'b';
3153	else
3154	mangleType(T->getElementType());
3155	}
3156
3157	void CXXNameMangler::mangleType(const ExtVectorType *T) {
3158	mangleType(static_cast<const VectorType*>(T));
3159	}
3160	void CXXNameMangler::mangleType(const DependentSizedExtVectorType *T) {
3161	Out << "Dv";
3162	mangleExpression(T->getSizeExpr());
3163	Out << '_';
3164	mangleType(T->getElementType());
3165	}
3166
3167	void CXXNameMangler::mangleType(const DependentAddressSpaceType *T) {
3168	SplitQualType split = T->getPointeeType().split();
3169	mangleQualifiers(split.Quals, T);
3170	mangleType(QualType(split.Ty, 0));
3171	}
3172
3173	void CXXNameMangler::mangleType(const PackExpansionType *T) {
3174	// <type> ::= Dp <type> # pack expansion (C++0x)
3175	Out << "Dp";
3176	mangleType(T->getPattern());
3177	}
3178
3179	void CXXNameMangler::mangleType(const ObjCInterfaceType *T) {
3180	mangleSourceName(T->getDecl()->getIdentifier());
3181	}
3182
3183	void CXXNameMangler::mangleType(const ObjCObjectType *T) {
3184	// Treat __kindof as a vendor extended type qualifier.
3185	if (T->isKindOfType())
3186	Out << "U8__kindof";
3187
3188	if (!T->qual_empty()) {
3189	// Mangle protocol qualifiers.
3190	SmallString<64> QualStr;
3191	llvm::raw_svector_ostream QualOS(QualStr);
3192	QualOS << "objcproto";
3193	for (const auto *I : T->quals()) {
3194	StringRef name = I->getName();
3195	QualOS << name.size() << name;
3196	}
3197	Out << 'U' << QualStr.size() << QualStr;
3198	}
3199
3200	mangleType(T->getBaseType());
3201
3202	if (T->isSpecialized()) {
3203	// Mangle type arguments as I <type>+ E
3204	Out << 'I';
3205	for (auto typeArg : T->getTypeArgs())
3206	mangleType(typeArg);
3207	Out << 'E';
3208	}
3209	}
3210
3211	void CXXNameMangler::mangleType(const BlockPointerType *T) {
3212	Out << "U13block_pointer";
3213	mangleType(T->getPointeeType());
3214	}
3215
3216	void CXXNameMangler::mangleType(const InjectedClassNameType *T) {
3217	// Mangle injected class name types as if the user had written the
3218	// specialization out fully. It may not actually be possible to see
3219	// this mangling, though.
3220	mangleType(T->getInjectedSpecializationType());
3221	}
3222
3223	void CXXNameMangler::mangleType(const TemplateSpecializationType *T) {
3224	if (TemplateDecl *TD = T->getTemplateName().getAsTemplateDecl()) {
3225	mangleTemplateName(TD, T->getArgs(), T->getNumArgs());
3226	} else {
3227	if (mangleSubstitution(QualType(T, 0)))
3228	return;
3229
3230	mangleTemplatePrefix(T->getTemplateName());
3231
3232	// FIXME: GCC does not appear to mangle the template arguments when
3233	// the template in question is a dependent template name. Should we
3234	// emulate that badness?
3235	mangleTemplateArgs(T->getArgs(), T->getNumArgs());
3236	addSubstitution(QualType(T, 0));
3237	}
3238	}
3239
3240	void CXXNameMangler::mangleType(const DependentNameType *T) {
3241	// Proposal by cxx-abi-dev, 2014-03-26
3242	// <class-enum-type> ::= <name> # non-dependent or dependent type name or
3243	// # dependent elaborated type specifier using
3244	// # 'typename'
3245	// ::= Ts <name> # dependent elaborated type specifier using
3246	// # 'struct' or 'class'
3247	// ::= Tu <name> # dependent elaborated type specifier using
3248	// # 'union'
3249	// ::= Te <name> # dependent elaborated type specifier using
3250	// # 'enum'
3251	switch (T->getKeyword()) {
3252	case ETK_None:
3253	case ETK_Typename:
3254	break;
3255	case ETK_Struct:
3256	case ETK_Class:
3257	case ETK_Interface:
3258	Out << "Ts";
3259	break;
3260	case ETK_Union:
3261	Out << "Tu";
3262	break;
3263	case ETK_Enum:
3264	Out << "Te";
3265	break;
3266	}
3267	// Typename types are always nested
3268	Out << 'N';
3269	manglePrefix(T->getQualifier());
3270	mangleSourceName(T->getIdentifier());
3271	Out << 'E';
3272	}
3273
3274	void CXXNameMangler::mangleType(const DependentTemplateSpecializationType *T) {
3275	// Dependently-scoped template types are nested if they have a prefix.
3276	Out << 'N';
3277
3278	// TODO: avoid making this TemplateName.
3279	TemplateName Prefix =
3280	getASTContext().getDependentTemplateName(T->getQualifier(),
3281	T->getIdentifier());
3282	mangleTemplatePrefix(Prefix);
3283
3284	// FIXME: GCC does not appear to mangle the template arguments when
3285	// the template in question is a dependent template name. Should we
3286	// emulate that badness?
3287	mangleTemplateArgs(T->getArgs(), T->getNumArgs());
3288	Out << 'E';
3289	}
3290
3291	void CXXNameMangler::mangleType(const TypeOfType *T) {
3292	// FIXME: this is pretty unsatisfactory, but there isn't an obvious
3293	// "extension with parameters" mangling.
3294	Out << "u6typeof";
3295	}
3296
3297	void CXXNameMangler::mangleType(const TypeOfExprType *T) {
3298	// FIXME: this is pretty unsatisfactory, but there isn't an obvious
3299	// "extension with parameters" mangling.
3300	Out << "u6typeof";
3301	}
3302
3303	void CXXNameMangler::mangleType(const DecltypeType *T) {
3304	Expr *E = T->getUnderlyingExpr();
3305
3306	// type ::= Dt <expression> E # decltype of an id-expression
3307	// # or class member access
3308	// ::= DT <expression> E # decltype of an expression
3309
3310	// This purports to be an exhaustive list of id-expressions and
3311	// class member accesses. Note that we do not ignore parentheses;
3312	// parentheses change the semantics of decltype for these
3313	// expressions (and cause the mangler to use the other form).
3314	if (isa<DeclRefExpr>(E) \|\|
3315	isa<MemberExpr>(E) \|\|
3316	isa<UnresolvedLookupExpr>(E) \|\|
3317	isa<DependentScopeDeclRefExpr>(E) \|\|
3318	isa<CXXDependentScopeMemberExpr>(E) \|\|
3319	isa<UnresolvedMemberExpr>(E))
3320	Out << "Dt";
3321	else
3322	Out << "DT";
3323	mangleExpression(E);
3324	Out << 'E';
3325	}
3326
3327	void CXXNameMangler::mangleType(const UnaryTransformType *T) {
3328	// If this is dependent, we need to record that. If not, we simply
3329	// mangle it as the underlying type since they are equivalent.
3330	if (T->isDependentType()) {
3331	Out << 'U';
3332
3333	switch (T->getUTTKind()) {
3334	case UnaryTransformType::EnumUnderlyingType:
3335	Out << "3eut";
3336	break;
3337	}
3338	}
3339
3340	mangleType(T->getBaseType());
3341	}
3342
3343	void CXXNameMangler::mangleType(const AutoType *T) {
3344	(0) . __assert_fail ("T->getDeducedType().isNull() && \"Deduced AutoType shouldn't be handled here!\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 3345, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(T->getDeducedType().isNull() &&
3345	(0) . __assert_fail ("T->getDeducedType().isNull() && \"Deduced AutoType shouldn't be handled here!\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 3345, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "Deduced AutoType shouldn't be handled here!");
3346	(0) . __assert_fail ("T->getKeyword() != AutoTypeKeyword..GNUAutoType && \"shouldn't need to mangle __auto_type!\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 3347, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(T->getKeyword() != AutoTypeKeyword::GNUAutoType &&
3347	(0) . __assert_fail ("T->getKeyword() != AutoTypeKeyword..GNUAutoType && \"shouldn't need to mangle __auto_type!\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 3347, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "shouldn't need to mangle __auto_type!");
3348	// <builtin-type> ::= Da # auto
3349	// ::= Dc # decltype(auto)
3350	Out << (T->isDecltypeAuto() ? "Dc" : "Da");
3351	}
3352
3353	void CXXNameMangler::mangleType(const DeducedTemplateSpecializationType *T) {
3354	// FIXME: This is not the right mangling. We also need to include a scope
3355	// here in some cases.
3356	QualType D = T->getDeducedType();
3357	if (D.isNull())
3358	mangleUnscopedTemplateName(T->getTemplateName(), nullptr);
3359	else
3360	mangleType(D);
3361	}
3362
3363	void CXXNameMangler::mangleType(const AtomicType *T) {
3364	// <type> ::= U <source-name> <type> # vendor extended type qualifier
3365	// (Until there's a standardized mangling...)
3366	Out << "U7_Atomic";
3367	mangleType(T->getValueType());
3368	}
3369
3370	void CXXNameMangler::mangleType(const PipeType *T) {
3371	// Pipe type mangling rules are described in SPIR 2.0 specification
3372	// A.1 Data types and A.3 Summary of changes
3373	// <type> ::= 8ocl_pipe
3374	Out << "8ocl_pipe";
3375	}
3376
3377	void CXXNameMangler::mangleIntegerLiteral(QualType T,
3378	const llvm::APSInt &Value) {
3379	// <expr-primary> ::= L <type> <value number> E # integer literal
3380	Out << 'L';
3381
3382	mangleType(T);
3383	if (T->isBooleanType()) {
3384	// Boolean values are encoded as 0/1.
3385	Out << (Value.getBoolValue() ? '1' : '0');
3386	} else {
3387	mangleNumber(Value);
3388	}
3389	Out << 'E';
3390
3391	}
3392
3393	void CXXNameMangler::mangleMemberExprBase(const Expr *Base, bool IsArrow) {
3394	// Ignore member expressions involving anonymous unions.
3395	while (const auto *RT = Base->getType()->getAs<RecordType>()) {
3396	if (!RT->getDecl()->isAnonymousStructOrUnion())
3397	break;
3398	const auto *ME = dyn_cast<MemberExpr>(Base);
3399	if (!ME)
3400	break;
3401	Base = ME->getBase();
3402	IsArrow = ME->isArrow();
3403	}
3404
3405	if (Base->isImplicitCXXThis()) {
3406	// Note: GCC mangles member expressions to the implicit 'this' as
3407	// *this., whereas we represent them as this->. The Itanium C++ ABI
3408	// does not specify anything here, so we follow GCC.
3409	Out << "dtdefpT";
3410	} else {
3411	Out << (IsArrow ? "pt" : "dt");
3412	mangleExpression(Base);
3413	}
3414	}
3415
3416	/// Mangles a member expression.
3417	void CXXNameMangler::mangleMemberExpr(const Expr *base,
3418	bool isArrow,
3419	NestedNameSpecifier *qualifier,
3420	NamedDecl *firstQualifierLookup,
3421	DeclarationName member,
3422	const TemplateArgumentLoc *TemplateArgs,
3423	unsigned NumTemplateArgs,
3424	unsigned arity) {
3425	// <expression> ::= dt <expression> <unresolved-name>
3426	// ::= pt <expression> <unresolved-name>
3427	if (base)
3428	mangleMemberExprBase(base, isArrow);
3429	mangleUnresolvedName(qualifier, member, TemplateArgs, NumTemplateArgs, arity);
3430	}
3431
3432	/// Look at the callee of the given call expression and determine if
3433	/// it's a parenthesized id-expression which would have triggered ADL
3434	/// otherwise.
3435	static bool isParenthesizedADLCallee(const CallExpr *call) {
3436	const Expr *callee = call->getCallee();
3437	const Expr *fn = callee->IgnoreParens();
3438
3439	// Must be parenthesized. IgnoreParens() skips __extension__ nodes,
3440	// too, but for those to appear in the callee, it would have to be
3441	// parenthesized.
3442	if (callee == fn) return false;
3443
3444	// Must be an unresolved lookup.
3445	const UnresolvedLookupExpr *lookup = dyn_cast<UnresolvedLookupExpr>(fn);
3446	if (!lookup) return false;
3447
3448	requiresADL()", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 3448, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(!lookup->requiresADL());
3449
3450	// Must be an unqualified lookup.
3451	if (lookup->getQualifier()) return false;
3452
3453	// Must not have found a class member. Note that if one is a class
3454	// member, they're all class members.
3455	if (lookup->getNumDecls() > 0 &&
3456	(*lookup->decls_begin())->isCXXClassMember())
3457	return false;
3458
3459	// Otherwise, ADL would have been triggered.
3460	return true;
3461	}
3462
3463	void CXXNameMangler::mangleCastExpression(const Expr *E, StringRef CastEncoding) {
3464	const ExplicitCastExpr *ECE = cast<ExplicitCastExpr>(E);
3465	Out << CastEncoding;
3466	mangleType(ECE->getType());
3467	mangleExpression(ECE->getSubExpr());
3468	}
3469
3470	void CXXNameMangler::mangleInitListElements(const InitListExpr *InitList) {
3471	if (auto *Syntactic = InitList->getSyntacticForm())
3472	InitList = Syntactic;
3473	for (unsigned i = 0, e = InitList->getNumInits(); i != e; ++i)
3474	mangleExpression(InitList->getInit(i));
3475	}
3476
3477	void CXXNameMangler::mangleExpression(const Expr *E, unsigned Arity) {
3478	// <expression> ::= <unary operator-name> <expression>
3479	// ::= <binary operator-name> <expression> <expression>
3480	// ::= <trinary operator-name> <expression> <expression> <expression>
3481	// ::= cv <type> expression # conversion with one argument
3482	// ::= cv <type> _ <expression>* E # conversion with a different number of arguments
3483	// ::= dc <type> <expression> # dynamic_cast<type> (expression)
3484	// ::= sc <type> <expression> # static_cast<type> (expression)
3485	// ::= cc <type> <expression> # const_cast<type> (expression)
3486	// ::= rc <type> <expression> # reinterpret_cast<type> (expression)
3487	// ::= st <type> # sizeof (a type)
3488	// ::= at <type> # alignof (a type)
3489	// ::= <template-param>
3490	// ::= <function-param>
3491	// ::= sr <type> <unqualified-name> # dependent name
3492	// ::= sr <type> <unqualified-name> <template-args> # dependent template-id
3493	// ::= ds <expression> <expression> # expr.*expr
3494	// ::= sZ <template-param> # size of a parameter pack
3495	// ::= sZ <function-param> # size of a function parameter pack
3496	// ::= <expr-primary>
3497	// <expr-primary> ::= L <type> <value number> E # integer literal
3498	// ::= L <type <value float> E # floating literal
3499	// ::= L <mangled-name> E # external name
3500	// ::= fpT # 'this' expression
3501	QualType ImplicitlyConvertedToType;
3502
3503	recurse:
3504	switch (E->getStmtClass()) {
3505	case Expr::NoStmtClass:
3506	#define ABSTRACT_STMT(Type)
3507	#define EXPR(Type, Base)
3508	#define STMT(Type, Base) \
3509	case Expr::Type##Class:
3510	#include "clang/AST/StmtNodes.inc"
3511	// fallthrough
3512
3513	// These all can only appear in local or variable-initialization
3514	// contexts and so should never appear in a mangling.
3515	case Expr::AddrLabelExprClass:
3516	case Expr::DesignatedInitUpdateExprClass:
3517	case Expr::ImplicitValueInitExprClass:
3518	case Expr::ArrayInitLoopExprClass:
3519	case Expr::ArrayInitIndexExprClass:
3520	case Expr::NoInitExprClass:
3521	case Expr::ParenListExprClass:
3522	case Expr::LambdaExprClass:
3523	case Expr::MSPropertyRefExprClass:
3524	case Expr::MSPropertySubscriptExprClass:
3525	case Expr::TypoExprClass: // This should no longer exist in the AST by now.
3526	case Expr::OMPArraySectionExprClass:
3527	case Expr::CXXInheritedCtorInitExprClass:
3528	llvm_unreachable("unexpected statement kind");
3529
3530	case Expr::ConstantExprClass:
3531	E = cast<ConstantExpr>(E)->getSubExpr();
3532	goto recurse;
3533
3534	// FIXME: invent manglings for all these.
3535	case Expr::BlockExprClass:
3536	case Expr::ChooseExprClass:
3537	case Expr::CompoundLiteralExprClass:
3538	case Expr::ExtVectorElementExprClass:
3539	case Expr::GenericSelectionExprClass:
3540	case Expr::ObjCEncodeExprClass:
3541	case Expr::ObjCIsaExprClass:
3542	case Expr::ObjCIvarRefExprClass:
3543	case Expr::ObjCMessageExprClass:
3544	case Expr::ObjCPropertyRefExprClass:
3545	case Expr::ObjCProtocolExprClass:
3546	case Expr::ObjCSelectorExprClass:
3547	case Expr::ObjCStringLiteralClass:
3548	case Expr::ObjCBoxedExprClass:
3549	case Expr::ObjCArrayLiteralClass:
3550	case Expr::ObjCDictionaryLiteralClass:
3551	case Expr::ObjCSubscriptRefExprClass:
3552	case Expr::ObjCIndirectCopyRestoreExprClass:
3553	case Expr::ObjCAvailabilityCheckExprClass:
3554	case Expr::OffsetOfExprClass:
3555	case Expr::PredefinedExprClass:
3556	case Expr::ShuffleVectorExprClass:
3557	case Expr::ConvertVectorExprClass:
3558	case Expr::StmtExprClass:
3559	case Expr::TypeTraitExprClass:
3560	case Expr::ArrayTypeTraitExprClass:
3561	case Expr::ExpressionTraitExprClass:
3562	case Expr::VAArgExprClass:
3563	case Expr::CUDAKernelCallExprClass:
3564	case Expr::AsTypeExprClass:
3565	case Expr::PseudoObjectExprClass:
3566	case Expr::AtomicExprClass:
3567	case Expr::FixedPointLiteralClass:
3568	{
3569	if (!NullOut) {
3570	// As bad as this diagnostic is, it's better than crashing.
3571	DiagnosticsEngine &Diags = Context.getDiags();
3572	unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
3573	"cannot yet mangle expression type %0");
3574	Diags.Report(E->getExprLoc(), DiagID)
3575	<< E->getStmtClassName() << E->getSourceRange();
3576	}
3577	break;
3578	}
3579
3580	case Expr::CXXUuidofExprClass: {
3581	const CXXUuidofExpr *UE = cast<CXXUuidofExpr>(E);
3582	if (UE->isTypeOperand()) {
3583	QualType UuidT = UE->getTypeOperand(Context.getASTContext());
3584	Out << "u8__uuidoft";
3585	mangleType(UuidT);
3586	} else {
3587	Expr *UuidExp = UE->getExprOperand();
3588	Out << "u8__uuidofz";
3589	mangleExpression(UuidExp, Arity);
3590	}
3591	break;
3592	}
3593
3594	// Even gcc-4.5 doesn't mangle this.
3595	case Expr::BinaryConditionalOperatorClass: {
3596	DiagnosticsEngine &Diags = Context.getDiags();
3597	unsigned DiagID =
3598	Diags.getCustomDiagID(DiagnosticsEngine::Error,
3599	"?: operator with omitted middle operand cannot be mangled");
3600	Diags.Report(E->getExprLoc(), DiagID)
3601	<< E->getStmtClassName() << E->getSourceRange();
3602	break;
3603	}
3604
3605	// These are used for internal purposes and cannot be meaningfully mangled.
3606	case Expr::OpaqueValueExprClass:
3607	llvm_unreachable("cannot mangle opaque value; mangling wrong thing?");
3608
3609	case Expr::InitListExprClass: {
3610	Out << "il";
3611	mangleInitListElements(cast<InitListExpr>(E));
3612	Out << "E";
3613	break;
3614	}
3615
3616	case Expr::DesignatedInitExprClass: {
3617	auto *DIE = cast<DesignatedInitExpr>(E);
3618	for (const auto &Designator : DIE->designators()) {
3619	if (Designator.isFieldDesignator()) {
3620	Out << "di";
3621	mangleSourceName(Designator.getFieldName());
3622	} else if (Designator.isArrayDesignator()) {
3623	Out << "dx";
3624	mangleExpression(DIE->getArrayIndex(Designator));
3625	} else {
3626	(0) . __assert_fail ("Designator.isArrayRangeDesignator() && \"unknown designator kind\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 3627, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(Designator.isArrayRangeDesignator() &&
3627	(0) . __assert_fail ("Designator.isArrayRangeDesignator() && \"unknown designator kind\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 3627, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "unknown designator kind");
3628	Out << "dX";
3629	mangleExpression(DIE->getArrayRangeStart(Designator));
3630	mangleExpression(DIE->getArrayRangeEnd(Designator));
3631	}
3632	}
3633	mangleExpression(DIE->getInit());
3634	break;
3635	}
3636
3637	case Expr::CXXDefaultArgExprClass:
3638	mangleExpression(cast<CXXDefaultArgExpr>(E)->getExpr(), Arity);
3639	break;
3640
3641	case Expr::CXXDefaultInitExprClass:
3642	mangleExpression(cast<CXXDefaultInitExpr>(E)->getExpr(), Arity);
3643	break;
3644
3645	case Expr::CXXStdInitializerListExprClass:
3646	mangleExpression(cast<CXXStdInitializerListExpr>(E)->getSubExpr(), Arity);
3647	break;
3648
3649	case Expr::SubstNonTypeTemplateParmExprClass:
3650	mangleExpression(cast<SubstNonTypeTemplateParmExpr>(E)->getReplacement(),
3651	Arity);
3652	break;
3653
3654	case Expr::UserDefinedLiteralClass:
3655	// We follow g++'s approach of mangling a UDL as a call to the literal
3656	// operator.
3657	case Expr::CXXMemberCallExprClass: // fallthrough
3658	case Expr::CallExprClass: {
3659	const CallExpr *CE = cast<CallExpr>(E);
3660
3661	// <expression> ::= cp <simple-id> <expression>* E
3662	// We use this mangling only when the call would use ADL except
3663	// for being parenthesized. Per discussion with David
3664	// Vandervoorde, 2011.04.25.
3665	if (isParenthesizedADLCallee(CE)) {
3666	Out << "cp";
3667	// The callee here is a parenthesized UnresolvedLookupExpr with
3668	// no qualifier and should always get mangled as a <simple-id>
3669	// anyway.
3670
3671	// <expression> ::= cl <expression>* E
3672	} else {
3673	Out << "cl";
3674	}
3675
3676	unsigned CallArity = CE->getNumArgs();
3677	for (const Expr *Arg : CE->arguments())
3678	if (isa<PackExpansionExpr>(Arg))
3679	CallArity = UnknownArity;
3680
3681	mangleExpression(CE->getCallee(), CallArity);
3682	for (const Expr *Arg : CE->arguments())
3683	mangleExpression(Arg);
3684	Out << 'E';
3685	break;
3686	}
3687
3688	case Expr::CXXNewExprClass: {
3689	const CXXNewExpr *New = cast<CXXNewExpr>(E);
3690	if (New->isGlobalNew()) Out << "gs";
3691	Out << (New->isArray() ? "na" : "nw");
3692	for (CXXNewExpr::const_arg_iterator I = New->placement_arg_begin(),
3693	E = New->placement_arg_end(); I != E; ++I)
3694	mangleExpression(*I);
3695	Out << '_';
3696	mangleType(New->getAllocatedType());
3697	if (New->hasInitializer()) {
3698	if (New->getInitializationStyle() == CXXNewExpr::ListInit)
3699	Out << "il";
3700	else
3701	Out << "pi";
3702	const Expr *Init = New->getInitializer();
3703	if (const CXXConstructExpr *CCE = dyn_cast<CXXConstructExpr>(Init)) {
3704	// Directly inline the initializers.
3705	for (CXXConstructExpr::const_arg_iterator I = CCE->arg_begin(),
3706	E = CCE->arg_end();
3707	I != E; ++I)
3708	mangleExpression(*I);
3709	} else if (const ParenListExpr *PLE = dyn_cast<ParenListExpr>(Init)) {
3710	for (unsigned i = 0, e = PLE->getNumExprs(); i != e; ++i)
3711	mangleExpression(PLE->getExpr(i));
3712	} else if (New->getInitializationStyle() == CXXNewExpr::ListInit &&
3713	isa<InitListExpr>(Init)) {
3714	// Only take InitListExprs apart for list-initialization.
3715	mangleInitListElements(cast<InitListExpr>(Init));
3716	} else
3717	mangleExpression(Init);
3718	}
3719	Out << 'E';
3720	break;
3721	}
3722
3723	case Expr::CXXPseudoDestructorExprClass: {
3724	const auto *PDE = cast<CXXPseudoDestructorExpr>(E);
3725	if (const Expr *Base = PDE->getBase())
3726	mangleMemberExprBase(Base, PDE->isArrow());
3727	NestedNameSpecifier *Qualifier = PDE->getQualifier();
3728	if (TypeSourceInfo *ScopeInfo = PDE->getScopeTypeInfo()) {
3729	if (Qualifier) {
3730	mangleUnresolvedPrefix(Qualifier,
3731	/Recursive=/true);
3732	mangleUnresolvedTypeOrSimpleId(ScopeInfo->getType());
3733	Out << 'E';
3734	} else {
3735	Out << "sr";
3736	if (!mangleUnresolvedTypeOrSimpleId(ScopeInfo->getType()))
3737	Out << 'E';
3738	}
3739	} else if (Qualifier) {
3740	mangleUnresolvedPrefix(Qualifier);
3741	}
3742	// <base-unresolved-name> ::= dn <destructor-name>
3743	Out << "dn";
3744	QualType DestroyedType = PDE->getDestroyedType();
3745	mangleUnresolvedTypeOrSimpleId(DestroyedType);
3746	break;
3747	}
3748
3749	case Expr::MemberExprClass: {
3750	const MemberExpr *ME = cast<MemberExpr>(E);
3751	mangleMemberExpr(ME->getBase(), ME->isArrow(),
3752	ME->getQualifier(), nullptr,
3753	ME->getMemberDecl()->getDeclName(),
3754	ME->getTemplateArgs(), ME->getNumTemplateArgs(),
3755	Arity);
3756	break;
3757	}
3758
3759	case Expr::UnresolvedMemberExprClass: {
3760	const UnresolvedMemberExpr *ME = cast<UnresolvedMemberExpr>(E);
3761	mangleMemberExpr(ME->isImplicitAccess() ? nullptr : ME->getBase(),
3762	ME->isArrow(), ME->getQualifier(), nullptr,
3763	ME->getMemberName(),
3764	ME->getTemplateArgs(), ME->getNumTemplateArgs(),
3765	Arity);
3766	break;
3767	}
3768
3769	case Expr::CXXDependentScopeMemberExprClass: {
3770	const CXXDependentScopeMemberExpr *ME
3771	= cast<CXXDependentScopeMemberExpr>(E);
3772	mangleMemberExpr(ME->isImplicitAccess() ? nullptr : ME->getBase(),
3773	ME->isArrow(), ME->getQualifier(),
3774	ME->getFirstQualifierFoundInScope(),
3775	ME->getMember(),
3776	ME->getTemplateArgs(), ME->getNumTemplateArgs(),
3777	Arity);
3778	break;
3779	}
3780
3781	case Expr::UnresolvedLookupExprClass: {
3782	const UnresolvedLookupExpr *ULE = cast<UnresolvedLookupExpr>(E);
3783	mangleUnresolvedName(ULE->getQualifier(), ULE->getName(),
3784	ULE->getTemplateArgs(), ULE->getNumTemplateArgs(),
3785	Arity);
3786	break;
3787	}
3788
3789	case Expr::CXXUnresolvedConstructExprClass: {
3790	const CXXUnresolvedConstructExpr *CE = cast<CXXUnresolvedConstructExpr>(E);
3791	unsigned N = CE->arg_size();
3792
3793	if (CE->isListInitialization()) {
3794	(0) . __assert_fail ("N == 1 && \"unexpected form for list initialization\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 3794, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(N == 1 && "unexpected form for list initialization");
3795	auto *IL = cast<InitListExpr>(CE->getArg(0));
3796	Out << "tl";
3797	mangleType(CE->getType());
3798	mangleInitListElements(IL);
3799	Out << "E";
3800	return;
3801	}
3802
3803	Out << "cv";
3804	mangleType(CE->getType());
3805	if (N != 1) Out << '_';
3806	for (unsigned I = 0; I != N; ++I) mangleExpression(CE->getArg(I));
3807	if (N != 1) Out << 'E';
3808	break;
3809	}
3810
3811	case Expr::CXXConstructExprClass: {
3812	const auto *CE = cast<CXXConstructExpr>(E);
3813	if (!CE->isListInitialization() \|\| CE->isStdInitListInitialization()) {
3814	(0) . __assert_fail ("CE->getNumArgs() >= 1 && (CE->getNumArgs() == 1 \|\| isa(CE->getArg(1))) && \"implicit CXXConstructExpr must have one argument\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 3817, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(
3815	(0) . __assert_fail ("CE->getNumArgs() >= 1 && (CE->getNumArgs() == 1 \|\| isa(CE->getArg(1))) && \"implicit CXXConstructExpr must have one argument\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 3817, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> CE->getNumArgs() >= 1 &&
3816	(0) . __assert_fail ("CE->getNumArgs() >= 1 && (CE->getNumArgs() == 1 \|\| isa(CE->getArg(1))) && \"implicit CXXConstructExpr must have one argument\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 3817, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> (CE->getNumArgs() == 1 \|\| isa<CXXDefaultArgExpr>(CE->getArg(1))) &&
3817	(0) . __assert_fail ("CE->getNumArgs() >= 1 && (CE->getNumArgs() == 1 \|\| isa(CE->getArg(1))) && \"implicit CXXConstructExpr must have one argument\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 3817, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "implicit CXXConstructExpr must have one argument");
3818	return mangleExpression(cast<CXXConstructExpr>(E)->getArg(0));
3819	}
3820	Out << "il";
3821	for (auto *E : CE->arguments())
3822	mangleExpression(E);
3823	Out << "E";
3824	break;
3825	}
3826
3827	case Expr::CXXTemporaryObjectExprClass: {
3828	const auto *CE = cast<CXXTemporaryObjectExpr>(E);
3829	unsigned N = CE->getNumArgs();
3830	bool List = CE->isListInitialization();
3831
3832	if (List)
3833	Out << "tl";
3834	else
3835	Out << "cv";
3836	mangleType(CE->getType());
3837	if (!List && N != 1)
3838	Out << '_';
3839	if (CE->isStdInitListInitialization()) {
3840	// We implicitly created a std::initializer_list<T> for the first argument
3841	// of a constructor of type U in an expression of the form U{a, b, c}.
3842	// Strip all the semantic gunk off the initializer list.
3843	auto *SILE =
3844	cast<CXXStdInitializerListExpr>(CE->getArg(0)->IgnoreImplicit());
3845	auto *ILE = cast<InitListExpr>(SILE->getSubExpr()->IgnoreImplicit());
3846	mangleInitListElements(ILE);
3847	} else {
3848	for (auto *E : CE->arguments())
3849	mangleExpression(E);
3850	}
3851	if (List \|\| N != 1)
3852	Out << 'E';
3853	break;
3854	}
3855
3856	case Expr::CXXScalarValueInitExprClass:
3857	Out << "cv";
3858	mangleType(E->getType());
3859	Out << "_E";
3860	break;
3861
3862	case Expr::CXXNoexceptExprClass:
3863	Out << "nx";
3864	mangleExpression(cast<CXXNoexceptExpr>(E)->getOperand());
3865	break;
3866
3867	case Expr::UnaryExprOrTypeTraitExprClass: {
3868	const UnaryExprOrTypeTraitExpr *SAE = cast<UnaryExprOrTypeTraitExpr>(E);
3869
3870	if (!SAE->isInstantiationDependent()) {
3871	// Itanium C++ ABI:
3872	// If the operand of a sizeof or alignof operator is not
3873	// instantiation-dependent it is encoded as an integer literal
3874	// reflecting the result of the operator.
3875	//
3876	// If the result of the operator is implicitly converted to a known
3877	// integer type, that type is used for the literal; otherwise, the type
3878	// of std::size_t or std::ptrdiff_t is used.
3879	QualType T = (ImplicitlyConvertedToType.isNull() \|\|
3880	!ImplicitlyConvertedToType->isIntegerType())? SAE->getType()
3881	: ImplicitlyConvertedToType;
3882	llvm::APSInt V = SAE->EvaluateKnownConstInt(Context.getASTContext());
3883	mangleIntegerLiteral(T, V);
3884	break;
3885	}
3886
3887	switch(SAE->getKind()) {
3888	case UETT_SizeOf:
3889	Out << 's';
3890	break;
3891	case UETT_PreferredAlignOf:
3892	case UETT_AlignOf:
3893	Out << 'a';
3894	break;
3895	case UETT_VecStep: {
3896	DiagnosticsEngine &Diags = Context.getDiags();
3897	unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
3898	"cannot yet mangle vec_step expression");
3899	Diags.Report(DiagID);
3900	return;
3901	}
3902	case UETT_OpenMPRequiredSimdAlign:
3903	DiagnosticsEngine &Diags = Context.getDiags();
3904	unsigned DiagID = Diags.getCustomDiagID(
3905	DiagnosticsEngine::Error,
3906	"cannot yet mangle __builtin_omp_required_simd_align expression");
3907	Diags.Report(DiagID);
3908	return;
3909	}
3910	if (SAE->isArgumentType()) {
3911	Out << 't';
3912	mangleType(SAE->getArgumentType());
3913	} else {
3914	Out << 'z';
3915	mangleExpression(SAE->getArgumentExpr());
3916	}
3917	break;
3918	}
3919
3920	case Expr::CXXThrowExprClass: {
3921	const CXXThrowExpr *TE = cast<CXXThrowExpr>(E);
3922	// <expression> ::= tw <expression> # throw expression
3923	// ::= tr # rethrow
3924	if (TE->getSubExpr()) {
3925	Out << "tw";
3926	mangleExpression(TE->getSubExpr());
3927	} else {
3928	Out << "tr";
3929	}
3930	break;
3931	}
3932
3933	case Expr::CXXTypeidExprClass: {
3934	const CXXTypeidExpr *TIE = cast<CXXTypeidExpr>(E);
3935	// <expression> ::= ti <type> # typeid (type)
3936	// ::= te <expression> # typeid (expression)
3937	if (TIE->isTypeOperand()) {
3938	Out << "ti";
3939	mangleType(TIE->getTypeOperand(Context.getASTContext()));
3940	} else {
3941	Out << "te";
3942	mangleExpression(TIE->getExprOperand());
3943	}
3944	break;
3945	}
3946
3947	case Expr::CXXDeleteExprClass: {
3948	const CXXDeleteExpr *DE = cast<CXXDeleteExpr>(E);
3949	// <expression> ::= [gs] dl <expression> # [::] delete expr
3950	// ::= [gs] da <expression> # [::] delete [] expr
3951	if (DE->isGlobalDelete()) Out << "gs";
3952	Out << (DE->isArrayForm() ? "da" : "dl");
3953	mangleExpression(DE->getArgument());
3954	break;
3955	}
3956
3957	case Expr::UnaryOperatorClass: {
3958	const UnaryOperator *UO = cast<UnaryOperator>(E);
3959	mangleOperatorName(UnaryOperator::getOverloadedOperator(UO->getOpcode()),
3960	/Arity=/1);
3961	mangleExpression(UO->getSubExpr());
3962	break;
3963	}
3964
3965	case Expr::ArraySubscriptExprClass: {
3966	const ArraySubscriptExpr *AE = cast<ArraySubscriptExpr>(E);
3967
3968	// Array subscript is treated as a syntactically weird form of
3969	// binary operator.
3970	Out << "ix";
3971	mangleExpression(AE->getLHS());
3972	mangleExpression(AE->getRHS());
3973	break;
3974	}
3975
3976	case Expr::CompoundAssignOperatorClass: // fallthrough
3977	case Expr::BinaryOperatorClass: {
3978	const BinaryOperator *BO = cast<BinaryOperator>(E);
3979	if (BO->getOpcode() == BO_PtrMemD)
3980	Out << "ds";
3981	else
3982	mangleOperatorName(BinaryOperator::getOverloadedOperator(BO->getOpcode()),
3983	/Arity=/2);
3984	mangleExpression(BO->getLHS());
3985	mangleExpression(BO->getRHS());
3986	break;
3987	}
3988
3989	case Expr::ConditionalOperatorClass: {
3990	const ConditionalOperator *CO = cast<ConditionalOperator>(E);
3991	mangleOperatorName(OO_Conditional, /Arity=/3);
3992	mangleExpression(CO->getCond());
3993	mangleExpression(CO->getLHS(), Arity);
3994	mangleExpression(CO->getRHS(), Arity);
3995	break;
3996	}
3997
3998	case Expr::ImplicitCastExprClass: {
3999	ImplicitlyConvertedToType = E->getType();
4000	E = cast<ImplicitCastExpr>(E)->getSubExpr();
4001	goto recurse;
4002	}
4003
4004	case Expr::ObjCBridgedCastExprClass: {
4005	// Mangle ownership casts as a vendor extended operator __bridge,
4006	// __bridge_transfer, or __bridge_retain.
4007	StringRef Kind = cast<ObjCBridgedCastExpr>(E)->getBridgeKindName();
4008	Out << "v1U" << Kind.size() << Kind;
4009	}
4010	// Fall through to mangle the cast itself.
4011	LLVM_FALLTHROUGH;
4012
4013	case Expr::CStyleCastExprClass:
4014	mangleCastExpression(E, "cv");
4015	break;
4016
4017	case Expr::CXXFunctionalCastExprClass: {
4018	auto *Sub = cast<ExplicitCastExpr>(E)->getSubExpr()->IgnoreImplicit();
4019	// FIXME: Add isImplicit to CXXConstructExpr.
4020	if (auto *CCE = dyn_cast<CXXConstructExpr>(Sub))
4021	if (CCE->getParenOrBraceRange().isInvalid())
4022	Sub = CCE->getArg(0)->IgnoreImplicit();
4023	if (auto *StdInitList = dyn_cast<CXXStdInitializerListExpr>(Sub))
4024	Sub = StdInitList->getSubExpr()->IgnoreImplicit();
4025	if (auto *IL = dyn_cast<InitListExpr>(Sub)) {
4026	Out << "tl";
4027	mangleType(E->getType());
4028	mangleInitListElements(IL);
4029	Out << "E";
4030	} else {
4031	mangleCastExpression(E, "cv");
4032	}
4033	break;
4034	}
4035
4036	case Expr::CXXStaticCastExprClass:
4037	mangleCastExpression(E, "sc");
4038	break;
4039	case Expr::CXXDynamicCastExprClass:
4040	mangleCastExpression(E, "dc");
4041	break;
4042	case Expr::CXXReinterpretCastExprClass:
4043	mangleCastExpression(E, "rc");
4044	break;
4045	case Expr::CXXConstCastExprClass:
4046	mangleCastExpression(E, "cc");
4047	break;
4048
4049	case Expr::CXXOperatorCallExprClass: {
4050	const CXXOperatorCallExpr *CE = cast<CXXOperatorCallExpr>(E);
4051	unsigned NumArgs = CE->getNumArgs();
4052	// A CXXOperatorCallExpr for OO_Arrow models only semantics, not syntax
4053	// (the enclosing MemberExpr covers the syntactic portion).
4054	if (CE->getOperator() != OO_Arrow)
4055	mangleOperatorName(CE->getOperator(), /Arity=/NumArgs);
4056	// Mangle the arguments.
4057	for (unsigned i = 0; i != NumArgs; ++i)
4058	mangleExpression(CE->getArg(i));
4059	break;
4060	}
4061
4062	case Expr::ParenExprClass:
4063	mangleExpression(cast<ParenExpr>(E)->getSubExpr(), Arity);
4064	break;
4065
4066	case Expr::DeclRefExprClass: {
4067	const NamedDecl *D = cast<DeclRefExpr>(E)->getDecl();
4068
4069	switch (D->getKind()) {
4070	default:
4071	// <expr-primary> ::= L <mangled-name> E # external name
4072	Out << 'L';
4073	mangle(D);
4074	Out << 'E';
4075	break;
4076
4077	case Decl::ParmVar:
4078	mangleFunctionParam(cast<ParmVarDecl>(D));
4079	break;
4080
4081	case Decl::EnumConstant: {
4082	const EnumConstantDecl *ED = cast<EnumConstantDecl>(D);
4083	mangleIntegerLiteral(ED->getType(), ED->getInitVal());
4084	break;
4085	}
4086
4087	case Decl::NonTypeTemplateParm: {
4088	const NonTypeTemplateParmDecl *PD = cast<NonTypeTemplateParmDecl>(D);
4089	mangleTemplateParameter(PD->getIndex());
4090	break;
4091	}
4092
4093	}
4094
4095	break;
4096	}
4097
4098	case Expr::SubstNonTypeTemplateParmPackExprClass:
4099	// FIXME: not clear how to mangle this!
4100	// template <unsigned N...> class A {
4101	// template <class U...> void foo(U (&x)[N]...);
4102	// };
4103	Out << "_SUBSTPACK_";
4104	break;
4105
4106	case Expr::FunctionParmPackExprClass: {
4107	// FIXME: not clear how to mangle this!
4108	const FunctionParmPackExpr *FPPE = cast<FunctionParmPackExpr>(E);
4109	Out << "v110_SUBSTPACK";
4110	mangleFunctionParam(FPPE->getParameterPack());
4111	break;
4112	}
4113
4114	case Expr::DependentScopeDeclRefExprClass: {
4115	const DependentScopeDeclRefExpr *DRE = cast<DependentScopeDeclRefExpr>(E);
4116	mangleUnresolvedName(DRE->getQualifier(), DRE->getDeclName(),
4117	DRE->getTemplateArgs(), DRE->getNumTemplateArgs(),
4118	Arity);
4119	break;
4120	}
4121
4122	case Expr::CXXBindTemporaryExprClass:
4123	mangleExpression(cast<CXXBindTemporaryExpr>(E)->getSubExpr());
4124	break;
4125
4126	case Expr::ExprWithCleanupsClass:
4127	mangleExpression(cast<ExprWithCleanups>(E)->getSubExpr(), Arity);
4128	break;
4129
4130	case Expr::FloatingLiteralClass: {
4131	const FloatingLiteral *FL = cast<FloatingLiteral>(E);
4132	Out << 'L';
4133	mangleType(FL->getType());
4134	mangleFloat(FL->getValue());
4135	Out << 'E';
4136	break;
4137	}
4138
4139	case Expr::CharacterLiteralClass:
4140	Out << 'L';
4141	mangleType(E->getType());
4142	Out << cast<CharacterLiteral>(E)->getValue();
4143	Out << 'E';
4144	break;
4145
4146	// FIXME. __objc_yes/__objc_no are mangled same as true/false
4147	case Expr::ObjCBoolLiteralExprClass:
4148	Out << "Lb";
4149	Out << (cast<ObjCBoolLiteralExpr>(E)->getValue() ? '1' : '0');
4150	Out << 'E';
4151	break;
4152
4153	case Expr::CXXBoolLiteralExprClass:
4154	Out << "Lb";
4155	Out << (cast<CXXBoolLiteralExpr>(E)->getValue() ? '1' : '0');
4156	Out << 'E';
4157	break;
4158
4159	case Expr::IntegerLiteralClass: {
4160	llvm::APSInt Value(cast<IntegerLiteral>(E)->getValue());
4161	if (E->getType()->isSignedIntegerType())
4162	Value.setIsSigned(true);
4163	mangleIntegerLiteral(E->getType(), Value);
4164	break;
4165	}
4166
4167	case Expr::ImaginaryLiteralClass: {
4168	const ImaginaryLiteral *IE = cast<ImaginaryLiteral>(E);
4169	// Mangle as if a complex literal.
4170	// Proposal from David Vandevoorde, 2010.06.30.
4171	Out << 'L';
4172	mangleType(E->getType());
4173	if (const FloatingLiteral *Imag =
4174	dyn_cast<FloatingLiteral>(IE->getSubExpr())) {
4175	// Mangle a floating-point zero of the appropriate type.
4176	mangleFloat(llvm::APFloat(Imag->getValue().getSemantics()));
4177	Out << '_';
4178	mangleFloat(Imag->getValue());
4179	} else {
4180	Out << "0_";
4181	llvm::APSInt Value(cast<IntegerLiteral>(IE->getSubExpr())->getValue());
4182	if (IE->getSubExpr()->getType()->isSignedIntegerType())
4183	Value.setIsSigned(true);
4184	mangleNumber(Value);
4185	}
4186	Out << 'E';
4187	break;
4188	}
4189
4190	case Expr::StringLiteralClass: {
4191	// Revised proposal from David Vandervoorde, 2010.07.15.
4192	Out << 'L';
4193	(E->getType())", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 4193, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(isa<ConstantArrayType>(E->getType()));
4194	mangleType(E->getType());
4195	Out << 'E';
4196	break;
4197	}
4198
4199	case Expr::GNUNullExprClass:
4200	// FIXME: should this really be mangled the same as nullptr?
4201	// fallthrough
4202
4203	case Expr::CXXNullPtrLiteralExprClass: {
4204	Out << "LDnE";
4205	break;
4206	}
4207
4208	case Expr::PackExpansionExprClass:
4209	Out << "sp";
4210	mangleExpression(cast<PackExpansionExpr>(E)->getPattern());
4211	break;
4212
4213	case Expr::SizeOfPackExprClass: {
4214	auto *SPE = cast<SizeOfPackExpr>(E);
4215	if (SPE->isPartiallySubstituted()) {
4216	Out << "sP";
4217	for (const auto &A : SPE->getPartialArguments())
4218	mangleTemplateArg(A);
4219	Out << "E";
4220	break;
4221	}
4222
4223	Out << "sZ";
4224	const NamedDecl *Pack = SPE->getPack();
4225	if (const TemplateTypeParmDecl *TTP = dyn_cast<TemplateTypeParmDecl>(Pack))
4226	mangleTemplateParameter(TTP->getIndex());
4227	else if (const NonTypeTemplateParmDecl *NTTP
4228	= dyn_cast<NonTypeTemplateParmDecl>(Pack))
4229	mangleTemplateParameter(NTTP->getIndex());
4230	else if (const TemplateTemplateParmDecl *TempTP
4231	= dyn_cast<TemplateTemplateParmDecl>(Pack))
4232	mangleTemplateParameter(TempTP->getIndex());
4233	else
4234	mangleFunctionParam(cast<ParmVarDecl>(Pack));
4235	break;
4236	}
4237
4238	case Expr::MaterializeTemporaryExprClass: {
4239	mangleExpression(cast<MaterializeTemporaryExpr>(E)->GetTemporaryExpr());
4240	break;
4241	}
4242
4243	case Expr::CXXFoldExprClass: {
4244	auto *FE = cast<CXXFoldExpr>(E);
4245	if (FE->isLeftFold())
4246	Out << (FE->getInit() ? "fL" : "fl");
4247	else
4248	Out << (FE->getInit() ? "fR" : "fr");
4249
4250	if (FE->getOperator() == BO_PtrMemD)
4251	Out << "ds";
4252	else
4253	mangleOperatorName(
4254	BinaryOperator::getOverloadedOperator(FE->getOperator()),
4255	/Arity=/2);
4256
4257	if (FE->getLHS())
4258	mangleExpression(FE->getLHS());
4259	if (FE->getRHS())
4260	mangleExpression(FE->getRHS());
4261	break;
4262	}
4263
4264	case Expr::CXXThisExprClass:
4265	Out << "fpT";
4266	break;
4267
4268	case Expr::CoawaitExprClass:
4269	// FIXME: Propose a non-vendor mangling.
4270	Out << "v18co_await";
4271	mangleExpression(cast<CoawaitExpr>(E)->getOperand());
4272	break;
4273
4274	case Expr::DependentCoawaitExprClass:
4275	// FIXME: Propose a non-vendor mangling.
4276	Out << "v18co_await";
4277	mangleExpression(cast<DependentCoawaitExpr>(E)->getOperand());
4278	break;
4279
4280	case Expr::CoyieldExprClass:
4281	// FIXME: Propose a non-vendor mangling.
4282	Out << "v18co_yield";
4283	mangleExpression(cast<CoawaitExpr>(E)->getOperand());
4284	break;
4285	}
4286	}
4287
4288	/// Mangle an expression which refers to a parameter variable.
4289	///
4290	/// <expression> ::= <function-param>
4291	/// <function-param> ::= fp <top-level CV-qualifiers> _ # L == 0, I == 0
4292	/// <function-param> ::= fp <top-level CV-qualifiers>
4293	/// <parameter-2 non-negative number> _ # L == 0, I > 0
4294	/// <function-param> ::= fL <L-1 non-negative number>
4295	/// p <top-level CV-qualifiers> _ # L > 0, I == 0
4296	/// <function-param> ::= fL <L-1 non-negative number>
4297	/// p <top-level CV-qualifiers>
4298	/// <I-1 non-negative number> _ # L > 0, I > 0
4299	///
4300	/// L is the nesting depth of the parameter, defined as 1 if the
4301	/// parameter comes from the innermost function prototype scope
4302	/// enclosing the current context, 2 if from the next enclosing
4303	/// function prototype scope, and so on, with one special case: if
4304	/// we've processed the full parameter clause for the innermost
4305	/// function type, then L is one less. This definition conveniently
4306	/// makes it irrelevant whether a function's result type was written
4307	/// trailing or leading, but is otherwise overly complicated; the
4308	/// numbering was first designed without considering references to
4309	/// parameter in locations other than return types, and then the
4310	/// mangling had to be generalized without changing the existing
4311	/// manglings.
4312	///
4313	/// I is the zero-based index of the parameter within its parameter
4314	/// declaration clause. Note that the original ABI document describes
4315	/// this using 1-based ordinals.
4316	void CXXNameMangler::mangleFunctionParam(const ParmVarDecl *parm) {
4317	unsigned parmDepth = parm->getFunctionScopeDepth();
4318	unsigned parmIndex = parm->getFunctionScopeIndex();
4319
4320	// Compute 'L'.
4321	// parmDepth does not include the declaring function prototype.
4322	// FunctionTypeDepth does account for that.
4323	assert(parmDepth < FunctionTypeDepth.getDepth());
4324	unsigned nestingDepth = FunctionTypeDepth.getDepth() - parmDepth;
4325	if (FunctionTypeDepth.isInResultType())
4326	nestingDepth--;
4327
4328	if (nestingDepth == 0) {
4329	Out << "fp";
4330	} else {
4331	Out << "fL" << (nestingDepth - 1) << 'p';
4332	}
4333
4334	// Top-level qualifiers. We don't have to worry about arrays here,
4335	// because parameters declared as arrays should already have been
4336	// transformed to have pointer type. FIXME: apparently these don't
4337	// get mangled if used as an rvalue of a known non-class type?
4338	(0) . __assert_fail ("!parm->getType()->isArrayType() && \"parameter's type is still an array type?\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 4339, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(!parm->getType()->isArrayType()
4339	(0) . __assert_fail ("!parm->getType()->isArrayType() && \"parameter's type is still an array type?\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 4339, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> && "parameter's type is still an array type?");
4340
4341	if (const DependentAddressSpaceType *DAST =
4342	dyn_cast<DependentAddressSpaceType>(parm->getType())) {
4343	mangleQualifiers(DAST->getPointeeType().getQualifiers(), DAST);
4344	} else {
4345	mangleQualifiers(parm->getType().getQualifiers());
4346	}
4347
4348	// Parameter index.
4349	if (parmIndex != 0) {
4350	Out << (parmIndex - 1);
4351	}
4352	Out << '_';
4353	}
4354
4355	void CXXNameMangler::mangleCXXCtorType(CXXCtorType T,
4356	const CXXRecordDecl *InheritedFrom) {
4357	// <ctor-dtor-name> ::= C1 # complete object constructor
4358	// ::= C2 # base object constructor
4359	// ::= CI1 <type> # complete inheriting constructor
4360	// ::= CI2 <type> # base inheriting constructor
4361	//
4362	// In addition, C5 is a comdat name with C1 and C2 in it.
4363	Out << 'C';
4364	if (InheritedFrom)
4365	Out << 'I';
4366	switch (T) {
4367	case Ctor_Complete:
4368	Out << '1';
4369	break;
4370	case Ctor_Base:
4371	Out << '2';
4372	break;
4373	case Ctor_Comdat:
4374	Out << '5';
4375	break;
4376	case Ctor_DefaultClosure:
4377	case Ctor_CopyingClosure:
4378	llvm_unreachable("closure constructors don't exist for the Itanium ABI!");
4379	}
4380	if (InheritedFrom)
4381	mangleName(InheritedFrom);
4382	}
4383
4384	void CXXNameMangler::mangleCXXDtorType(CXXDtorType T) {
4385	// <ctor-dtor-name> ::= D0 # deleting destructor
4386	// ::= D1 # complete object destructor
4387	// ::= D2 # base object destructor
4388	//
4389	// In addition, D5 is a comdat name with D1, D2 and, if virtual, D0 in it.
4390	switch (T) {
4391	case Dtor_Deleting:
4392	Out << "D0";
4393	break;
4394	case Dtor_Complete:
4395	Out << "D1";
4396	break;
4397	case Dtor_Base:
4398	Out << "D2";
4399	break;
4400	case Dtor_Comdat:
4401	Out << "D5";
4402	break;
4403	}
4404	}
4405
4406	void CXXNameMangler::mangleTemplateArgs(const TemplateArgumentLoc *TemplateArgs,
4407	unsigned NumTemplateArgs) {
4408	// <template-args> ::= I <template-arg>+ E
4409	Out << 'I';
4410	for (unsigned i = 0; i != NumTemplateArgs; ++i)
4411	mangleTemplateArg(TemplateArgs[i].getArgument());
4412	Out << 'E';
4413	}
4414
4415	void CXXNameMangler::mangleTemplateArgs(const TemplateArgumentList &AL) {
4416	// <template-args> ::= I <template-arg>+ E
4417	Out << 'I';
4418	for (unsigned i = 0, e = AL.size(); i != e; ++i)
4419	mangleTemplateArg(AL[i]);
4420	Out << 'E';
4421	}
4422
4423	void CXXNameMangler::mangleTemplateArgs(const TemplateArgument *TemplateArgs,
4424	unsigned NumTemplateArgs) {
4425	// <template-args> ::= I <template-arg>+ E
4426	Out << 'I';
4427	for (unsigned i = 0; i != NumTemplateArgs; ++i)
4428	mangleTemplateArg(TemplateArgs[i]);
4429	Out << 'E';
4430	}
4431
4432	void CXXNameMangler::mangleTemplateArg(TemplateArgument A) {
4433	// <template-arg> ::= <type> # type or template
4434	// ::= X <expression> E # expression
4435	// ::= <expr-primary> # simple expressions
4436	// ::= J <template-arg>* E # argument pack
4437	if (!A.isInstantiationDependent() \|\| A.isDependent())
4438	A = Context.getASTContext().getCanonicalTemplateArgument(A);
4439
4440	switch (A.getKind()) {
4441	case TemplateArgument::Null:
4442	llvm_unreachable("Cannot mangle NULL template argument");
4443
4444	case TemplateArgument::Type:
4445	mangleType(A.getAsType());
4446	break;
4447	case TemplateArgument::Template:
4448	// This is mangled as <type>.
4449	mangleType(A.getAsTemplate());
4450	break;
4451	case TemplateArgument::TemplateExpansion:
4452	// <type> ::= Dp <type> # pack expansion (C++0x)
4453	Out << "Dp";
4454	mangleType(A.getAsTemplateOrTemplatePattern());
4455	break;
4456	case TemplateArgument::Expression: {
4457	// It's possible to end up with a DeclRefExpr here in certain
4458	// dependent cases, in which case we should mangle as a
4459	// declaration.
4460	const Expr *E = A.getAsExpr()->IgnoreParens();
4461	if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) {
4462	const ValueDecl *D = DRE->getDecl();
4463	if (isa<VarDecl>(D) \|\| isa<FunctionDecl>(D)) {
4464	Out << 'L';
4465	mangle(D);
4466	Out << 'E';
4467	break;
4468	}
4469	}
4470
4471	Out << 'X';
4472	mangleExpression(E);
4473	Out << 'E';
4474	break;
4475	}
4476	case TemplateArgument::Integral:
4477	mangleIntegerLiteral(A.getIntegralType(), A.getAsIntegral());
4478	break;
4479	case TemplateArgument::Declaration: {
4480	// <expr-primary> ::= L <mangled-name> E # external name
4481	// Clang produces AST's where pointer-to-member-function expressions
4482	// and pointer-to-function expressions are represented as a declaration not
4483	// an expression. We compensate for it here to produce the correct mangling.
4484	ValueDecl *D = A.getAsDecl();
4485	bool compensateMangling = !A.getParamTypeForDecl()->isReferenceType();
4486	if (compensateMangling) {
4487	Out << 'X';
4488	mangleOperatorName(OO_Amp, 1);
4489	}
4490
4491	Out << 'L';
4492	// References to external entities use the mangled name; if the name would
4493	// not normally be mangled then mangle it as unqualified.
4494	mangle(D);
4495	Out << 'E';
4496
4497	if (compensateMangling)
4498	Out << 'E';
4499
4500	break;
4501	}
4502	case TemplateArgument::NullPtr: {
4503	// <expr-primary> ::= L <type> 0 E
4504	Out << 'L';
4505	mangleType(A.getNullPtrType());
4506	Out << "0E";
4507	break;
4508	}
4509	case TemplateArgument::Pack: {
4510	// <template-arg> ::= J <template-arg>* E
4511	Out << 'J';
4512	for (const auto &P : A.pack_elements())
4513	mangleTemplateArg(P);
4514	Out << 'E';
4515	}
4516	}
4517	}
4518
4519	void CXXNameMangler::mangleTemplateParameter(unsigned Index) {
4520	// <template-param> ::= T_ # first template parameter
4521	// ::= T <parameter-2 non-negative number> _
4522	if (Index == 0)
4523	Out << "T_";
4524	else
4525	Out << 'T' << (Index - 1) << '_';
4526	}
4527
4528	void CXXNameMangler::mangleSeqID(unsigned SeqID) {
4529	if (SeqID == 1)
4530	Out << '0';
4531	else if (SeqID > 1) {
4532	SeqID--;
4533
4534	// <seq-id> is encoded in base-36, using digits and upper case letters.
4535	char Buffer[7]; // log(2**32) / log(36) ~= 7
4536	MutableArrayRef<char> BufferRef(Buffer);
4537	MutableArrayRef<char>::reverse_iterator I = BufferRef.rbegin();
4538
4539	for (; SeqID != 0; SeqID /= 36) {
4540	unsigned C = SeqID % 36;
4541	*I++ = (C < 10 ? '0' + C : 'A' + C - 10);
4542	}
4543
4544	Out.write(I.base(), I - BufferRef.rbegin());
4545	}
4546	Out << '_';
4547	}
4548
4549	void CXXNameMangler::mangleExistingSubstitution(TemplateName tname) {
4550	bool result = mangleSubstitution(tname);
4551	(0) . __assert_fail ("result && \"no existing substitution for template name\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 4551, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(result && "no existing substitution for template name");
4552	(void) result;
4553	}
4554
4555	// <substitution> ::= S <seq-id> _
4556	// ::= S_
4557	bool CXXNameMangler::mangleSubstitution(const NamedDecl *ND) {
4558	// Try one of the standard substitutions first.
4559	if (mangleStandardSubstitution(ND))
4560	return true;
4561
4562	ND = cast<NamedDecl>(ND->getCanonicalDecl());
4563	return mangleSubstitution(reinterpret_cast<uintptr_t>(ND));
4564	}
4565
4566	/// Determine whether the given type has any qualifiers that are relevant for
4567	/// substitutions.
4568	static bool hasMangledSubstitutionQualifiers(QualType T) {
4569	Qualifiers Qs = T.getQualifiers();
4570	return Qs.getCVRQualifiers() \|\| Qs.hasAddressSpace() \|\| Qs.hasUnaligned();
4571	}
4572
4573	bool CXXNameMangler::mangleSubstitution(QualType T) {
4574	if (!hasMangledSubstitutionQualifiers(T)) {
4575	if (const RecordType *RT = T->getAs<RecordType>())
4576	return mangleSubstitution(RT->getDecl());
4577	}
4578
4579	uintptr_t TypePtr = reinterpret_cast<uintptr_t>(T.getAsOpaquePtr());
4580
4581	return mangleSubstitution(TypePtr);
4582	}
4583
4584	bool CXXNameMangler::mangleSubstitution(TemplateName Template) {
4585	if (TemplateDecl *TD = Template.getAsTemplateDecl())
4586	return mangleSubstitution(TD);
4587
4588	Template = Context.getASTContext().getCanonicalTemplateName(Template);
4589	return mangleSubstitution(
4590	reinterpret_cast<uintptr_t>(Template.getAsVoidPointer()));
4591	}
4592
4593	bool CXXNameMangler::mangleSubstitution(uintptr_t Ptr) {
4594	llvm::DenseMap<uintptr_t, unsigned>::iterator I = Substitutions.find(Ptr);
4595	if (I == Substitutions.end())
4596	return false;
4597
4598	unsigned SeqID = I->second;
4599	Out << 'S';
4600	mangleSeqID(SeqID);
4601
4602	return true;
4603	}
4604
4605	static bool isCharType(QualType T) {
4606	if (T.isNull())
4607	return false;
4608
4609	return T->isSpecificBuiltinType(BuiltinType::Char_S) \|\|
4610	T->isSpecificBuiltinType(BuiltinType::Char_U);
4611	}
4612
4613	/// Returns whether a given type is a template specialization of a given name
4614	/// with a single argument of type char.
4615	static bool isCharSpecialization(QualType T, const char *Name) {
4616	if (T.isNull())
4617	return false;
4618
4619	const RecordType *RT = T->getAs<RecordType>();
4620	if (!RT)
4621	return false;
4622
4623	const ClassTemplateSpecializationDecl *SD =
4624	dyn_cast<ClassTemplateSpecializationDecl>(RT->getDecl());
4625	if (!SD)
4626	return false;
4627
4628	if (!isStdNamespace(getEffectiveDeclContext(SD)))
4629	return false;
4630
4631	const TemplateArgumentList &TemplateArgs = SD->getTemplateArgs();
4632	if (TemplateArgs.size() != 1)
4633	return false;
4634
4635	if (!isCharType(TemplateArgs[0].getAsType()))
4636	return false;
4637
4638	return SD->getIdentifier()->getName() == Name;
4639	}
4640
4641	template <std::size_t StrLen>
4642	static bool isStreamCharSpecialization(const ClassTemplateSpecializationDecl*SD,
4643	const char (&Str)[StrLen]) {
4644	if (!SD->getIdentifier()->isStr(Str))
4645	return false;
4646
4647	const TemplateArgumentList &TemplateArgs = SD->getTemplateArgs();
4648	if (TemplateArgs.size() != 2)
4649	return false;
4650
4651	if (!isCharType(TemplateArgs[0].getAsType()))
4652	return false;
4653
4654	if (!isCharSpecialization(TemplateArgs[1].getAsType(), "char_traits"))
4655	return false;
4656
4657	return true;
4658	}
4659
4660	bool CXXNameMangler::mangleStandardSubstitution(const NamedDecl *ND) {
4661	// <substitution> ::= St # ::std::
4662	if (const NamespaceDecl *NS = dyn_cast<NamespaceDecl>(ND)) {
4663	if (isStd(NS)) {
4664	Out << "St";
4665	return true;
4666	}
4667	}
4668
4669	if (const ClassTemplateDecl *TD = dyn_cast<ClassTemplateDecl>(ND)) {
4670	if (!isStdNamespace(getEffectiveDeclContext(TD)))
4671	return false;
4672
4673	// <substitution> ::= Sa # ::std::allocator
4674	if (TD->getIdentifier()->isStr("allocator")) {
4675	Out << "Sa";
4676	return true;
4677	}
4678
4679	// <<substitution> ::= Sb # ::std::basic_string
4680	if (TD->getIdentifier()->isStr("basic_string")) {
4681	Out << "Sb";
4682	return true;
4683	}
4684	}
4685
4686	if (const ClassTemplateSpecializationDecl *SD =
4687	dyn_cast<ClassTemplateSpecializationDecl>(ND)) {
4688	if (!isStdNamespace(getEffectiveDeclContext(SD)))
4689	return false;
4690
4691	// <substitution> ::= Ss # ::std::basic_string<char,
4692	// ::std::char_traits<char>,
4693	// ::std::allocator<char> >
4694	if (SD->getIdentifier()->isStr("basic_string")) {
4695	const TemplateArgumentList &TemplateArgs = SD->getTemplateArgs();
4696
4697	if (TemplateArgs.size() != 3)
4698	return false;
4699
4700	if (!isCharType(TemplateArgs[0].getAsType()))
4701	return false;
4702
4703	if (!isCharSpecialization(TemplateArgs[1].getAsType(), "char_traits"))
4704	return false;
4705
4706	if (!isCharSpecialization(TemplateArgs[2].getAsType(), "allocator"))
4707	return false;
4708
4709	Out << "Ss";
4710	return true;
4711	}
4712
4713	// <substitution> ::= Si # ::std::basic_istream<char,
4714	// ::std::char_traits<char> >
4715	if (isStreamCharSpecialization(SD, "basic_istream")) {
4716	Out << "Si";
4717	return true;
4718	}
4719
4720	// <substitution> ::= So # ::std::basic_ostream<char,
4721	// ::std::char_traits<char> >
4722	if (isStreamCharSpecialization(SD, "basic_ostream")) {
4723	Out << "So";
4724	return true;
4725	}
4726
4727	// <substitution> ::= Sd # ::std::basic_iostream<char,
4728	// ::std::char_traits<char> >
4729	if (isStreamCharSpecialization(SD, "basic_iostream")) {
4730	Out << "Sd";
4731	return true;
4732	}
4733	}
4734	return false;
4735	}
4736
4737	void CXXNameMangler::addSubstitution(QualType T) {
4738	if (!hasMangledSubstitutionQualifiers(T)) {
4739	if (const RecordType *RT = T->getAs<RecordType>()) {
4740	addSubstitution(RT->getDecl());
4741	return;
4742	}
4743	}
4744
4745	uintptr_t TypePtr = reinterpret_cast<uintptr_t>(T.getAsOpaquePtr());
4746	addSubstitution(TypePtr);
4747	}
4748
4749	void CXXNameMangler::addSubstitution(TemplateName Template) {
4750	if (TemplateDecl *TD = Template.getAsTemplateDecl())
4751	return addSubstitution(TD);
4752
4753	Template = Context.getASTContext().getCanonicalTemplateName(Template);
4754	addSubstitution(reinterpret_cast<uintptr_t>(Template.getAsVoidPointer()));
4755	}
4756
4757	void CXXNameMangler::addSubstitution(uintptr_t Ptr) {
4758	(0) . __assert_fail ("!Substitutions.count(Ptr) && \"Substitution already exists!\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 4758, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(!Substitutions.count(Ptr) && "Substitution already exists!");
4759	Substitutions[Ptr] = SeqID++;
4760	}
4761
4762	void CXXNameMangler::extendSubstitutions(CXXNameMangler* Other) {
4763	(0) . __assert_fail ("Other->SeqID >= SeqID && \"Must be superset of substitutions!\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 4763, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(Other->SeqID >= SeqID && "Must be superset of substitutions!");
4764	if (Other->SeqID > SeqID) {
4765	Substitutions.swap(Other->Substitutions);
4766	SeqID = Other->SeqID;
4767	}
4768	}
4769
4770	CXXNameMangler::AbiTagList
4771	CXXNameMangler::makeFunctionReturnTypeTags(const FunctionDecl *FD) {
4772	// When derived abi tags are disabled there is no need to make any list.
4773	if (DisableDerivedAbiTags)
4774	return AbiTagList();
4775
4776	llvm::raw_null_ostream NullOutStream;
4777	CXXNameMangler TrackReturnTypeTags(*this, NullOutStream);
4778	TrackReturnTypeTags.disableDerivedAbiTags();
4779
4780	const FunctionProtoType *Proto =
4781	cast<FunctionProtoType>(FD->getType()->getAs<FunctionType>());
4782	FunctionTypeDepthState saved = TrackReturnTypeTags.FunctionTypeDepth.push();
4783	TrackReturnTypeTags.FunctionTypeDepth.enterResultType();
4784	TrackReturnTypeTags.mangleType(Proto->getReturnType());
4785	TrackReturnTypeTags.FunctionTypeDepth.leaveResultType();
4786	TrackReturnTypeTags.FunctionTypeDepth.pop(saved);
4787
4788	return TrackReturnTypeTags.AbiTagsRoot.getSortedUniqueUsedAbiTags();
4789	}
4790
4791	CXXNameMangler::AbiTagList
4792	CXXNameMangler::makeVariableTypeTags(const VarDecl *VD) {
4793	// When derived abi tags are disabled there is no need to make any list.
4794	if (DisableDerivedAbiTags)
4795	return AbiTagList();
4796
4797	llvm::raw_null_ostream NullOutStream;
4798	CXXNameMangler TrackVariableType(*this, NullOutStream);
4799	TrackVariableType.disableDerivedAbiTags();
4800
4801	TrackVariableType.mangleType(VD->getType());
4802
4803	return TrackVariableType.AbiTagsRoot.getSortedUniqueUsedAbiTags();
4804	}
4805
4806	bool CXXNameMangler::shouldHaveAbiTags(ItaniumMangleContextImpl &C,
4807	const VarDecl *VD) {
4808	llvm::raw_null_ostream NullOutStream;
4809	CXXNameMangler TrackAbiTags(C, NullOutStream, nullptr, true);
4810	TrackAbiTags.mangle(VD);
4811	return TrackAbiTags.AbiTagsRoot.getUsedAbiTags().size();
4812	}
4813
4814	//
4815
4816	/// Mangles the name of the declaration D and emits that name to the given
4817	/// output stream.
4818	///
4819	/// If the declaration D requires a mangled name, this routine will emit that
4820	/// mangled name to \p os and return true. Otherwise, \p os will be unchanged
4821	/// and this routine will return false. In this case, the caller should just
4822	/// emit the identifier of the declaration (\c D->getIdentifier()) as its
4823	/// name.
4824	void ItaniumMangleContextImpl::mangleCXXName(const NamedDecl *D,
4825	raw_ostream &Out) {
4826	(0) . __assert_fail ("(isa(D) \|\| isa(D)) && \"Invalid mangleName() call, argument is not a variable or function!\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 4827, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert((isa<FunctionDecl>(D) \|\| isa<VarDecl>(D)) &&
4827	(0) . __assert_fail ("(isa(D) \|\| isa(D)) && \"Invalid mangleName() call, argument is not a variable or function!\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 4827, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "Invalid mangleName() call, argument is not a variable or function!");
4828	(0) . __assert_fail ("!isa(D) && !isa(D) && \"Invalid mangleName() call on 'structor decl!\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 4829, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(!isa<CXXConstructorDecl>(D) && !isa<CXXDestructorDecl>(D) &&
4829	(0) . __assert_fail ("!isa(D) && !isa(D) && \"Invalid mangleName() call on 'structor decl!\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 4829, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "Invalid mangleName() call on 'structor decl!");
4830
4831	PrettyStackTraceDecl CrashInfo(D, SourceLocation(),
4832	getASTContext().getSourceManager(),
4833	"Mangling declaration");
4834
4835	CXXNameMangler Mangler(*this, Out, D);
4836	Mangler.mangle(D);
4837	}
4838
4839	void ItaniumMangleContextImpl::mangleCXXCtor(const CXXConstructorDecl *D,
4840	CXXCtorType Type,
4841	raw_ostream &Out) {
4842	CXXNameMangler Mangler(*this, Out, D, Type);
4843	Mangler.mangle(D);
4844	}
4845
4846	void ItaniumMangleContextImpl::mangleCXXDtor(const CXXDestructorDecl *D,
4847	CXXDtorType Type,
4848	raw_ostream &Out) {
4849	CXXNameMangler Mangler(*this, Out, D, Type);
4850	Mangler.mangle(D);
4851	}
4852
4853	void ItaniumMangleContextImpl::mangleCXXCtorComdat(const CXXConstructorDecl *D,
4854	raw_ostream &Out) {
4855	CXXNameMangler Mangler(*this, Out, D, Ctor_Comdat);
4856	Mangler.mangle(D);
4857	}
4858
4859	void ItaniumMangleContextImpl::mangleCXXDtorComdat(const CXXDestructorDecl *D,
4860	raw_ostream &Out) {
4861	CXXNameMangler Mangler(*this, Out, D, Dtor_Comdat);
4862	Mangler.mangle(D);
4863	}
4864
4865	void ItaniumMangleContextImpl::mangleThunk(const CXXMethodDecl *MD,
4866	const ThunkInfo &Thunk,
4867	raw_ostream &Out) {
4868	// <special-name> ::= T <call-offset> <base encoding>
4869	// # base is the nominal target function of thunk
4870	// <special-name> ::= Tc <call-offset> <call-offset> <base encoding>
4871	// # base is the nominal target function of thunk
4872	// # first call-offset is 'this' adjustment
4873	// # second call-offset is result adjustment
4874
4875	(0) . __assert_fail ("!isa(MD) && \"Use mangleCXXDtor for destructor decls!\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 4876, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(!isa<CXXDestructorDecl>(MD) &&
4876	(0) . __assert_fail ("!isa(MD) && \"Use mangleCXXDtor for destructor decls!\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 4876, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true"> "Use mangleCXXDtor for destructor decls!");
4877	CXXNameMangler Mangler(*this, Out);
4878	Mangler.getStream() << "_ZT";
4879	if (!Thunk.Return.isEmpty())
4880	Mangler.getStream() << 'c';
4881
4882	// Mangle the 'this' pointer adjustment.
4883	Mangler.mangleCallOffset(Thunk.This.NonVirtual,
4884	Thunk.This.Virtual.Itanium.VCallOffsetOffset);
4885
4886	// Mangle the return pointer adjustment if there is one.
4887	if (!Thunk.Return.isEmpty())
4888	Mangler.mangleCallOffset(Thunk.Return.NonVirtual,
4889	Thunk.Return.Virtual.Itanium.VBaseOffsetOffset);
4890
4891	Mangler.mangleFunctionEncoding(MD);
4892	}
4893
4894	void ItaniumMangleContextImpl::mangleCXXDtorThunk(
4895	const CXXDestructorDecl *DD, CXXDtorType Type,
4896	const ThisAdjustment &ThisAdjustment, raw_ostream &Out) {
4897	// <special-name> ::= T <call-offset> <base encoding>
4898	// # base is the nominal target function of thunk
4899	CXXNameMangler Mangler(*this, Out, DD, Type);
4900	Mangler.getStream() << "_ZT";
4901
4902	// Mangle the 'this' pointer adjustment.
4903	Mangler.mangleCallOffset(ThisAdjustment.NonVirtual,
4904	ThisAdjustment.Virtual.Itanium.VCallOffsetOffset);
4905
4906	Mangler.mangleFunctionEncoding(DD);
4907	}
4908
4909	/// Returns the mangled name for a guard variable for the passed in VarDecl.
4910	void ItaniumMangleContextImpl::mangleStaticGuardVariable(const VarDecl *D,
4911	raw_ostream &Out) {
4912	// <special-name> ::= GV <object name> # Guard variable for one-time
4913	// # initialization
4914	CXXNameMangler Mangler(*this, Out);
4915	// GCC 5.3.0 doesn't emit derived ABI tags for local names but that seems to
4916	// be a bug that is fixed in trunk.
4917	Mangler.getStream() << "_ZGV";
4918	Mangler.mangleName(D);
4919	}
4920
4921	void ItaniumMangleContextImpl::mangleDynamicInitializer(const VarDecl *MD,
4922	raw_ostream &Out) {
4923	// These symbols are internal in the Itanium ABI, so the names don't matter.
4924	// Clang has traditionally used this symbol and allowed LLVM to adjust it to
4925	// avoid duplicate symbols.
4926	Out << "__cxx_global_var_init";
4927	}
4928
4929	void ItaniumMangleContextImpl::mangleDynamicAtExitDestructor(const VarDecl *D,
4930	raw_ostream &Out) {
4931	// Prefix the mangling of D with __dtor_.
4932	CXXNameMangler Mangler(*this, Out);
4933	Mangler.getStream() << "__dtor_";
4934	if (shouldMangleDeclName(D))
4935	Mangler.mangle(D);
4936	else
4937	Mangler.getStream() << D->getName();
4938	}
4939
4940	void ItaniumMangleContextImpl::mangleSEHFilterExpression(
4941	const NamedDecl *EnclosingDecl, raw_ostream &Out) {
4942	CXXNameMangler Mangler(*this, Out);
4943	Mangler.getStream() << "__filt_";
4944	if (shouldMangleDeclName(EnclosingDecl))
4945	Mangler.mangle(EnclosingDecl);
4946	else
4947	Mangler.getStream() << EnclosingDecl->getName();
4948	}
4949
4950	void ItaniumMangleContextImpl::mangleSEHFinallyBlock(
4951	const NamedDecl *EnclosingDecl, raw_ostream &Out) {
4952	CXXNameMangler Mangler(*this, Out);
4953	Mangler.getStream() << "__fin_";
4954	if (shouldMangleDeclName(EnclosingDecl))
4955	Mangler.mangle(EnclosingDecl);
4956	else
4957	Mangler.getStream() << EnclosingDecl->getName();
4958	}
4959
4960	void ItaniumMangleContextImpl::mangleItaniumThreadLocalInit(const VarDecl *D,
4961	raw_ostream &Out) {
4962	// <special-name> ::= TH <object name>
4963	CXXNameMangler Mangler(*this, Out);
4964	Mangler.getStream() << "_ZTH";
4965	Mangler.mangleName(D);
4966	}
4967
4968	void
4969	ItaniumMangleContextImpl::mangleItaniumThreadLocalWrapper(const VarDecl *D,
4970	raw_ostream &Out) {
4971	// <special-name> ::= TW <object name>
4972	CXXNameMangler Mangler(*this, Out);
4973	Mangler.getStream() << "_ZTW";
4974	Mangler.mangleName(D);
4975	}
4976
4977	void ItaniumMangleContextImpl::mangleReferenceTemporary(const VarDecl *D,
4978	unsigned ManglingNumber,
4979	raw_ostream &Out) {
4980	// We match the GCC mangling here.
4981	// <special-name> ::= GR <object name>
4982	CXXNameMangler Mangler(*this, Out);
4983	Mangler.getStream() << "_ZGR";
4984	Mangler.mangleName(D);
4985	(0) . __assert_fail ("ManglingNumber > 0 && \"Reference temporary mangling number is zero!\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 4985, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(ManglingNumber > 0 && "Reference temporary mangling number is zero!");
4986	Mangler.mangleSeqID(ManglingNumber - 1);
4987	}
4988
4989	void ItaniumMangleContextImpl::mangleCXXVTable(const CXXRecordDecl *RD,
4990	raw_ostream &Out) {
4991	// <special-name> ::= TV <type> # virtual table
4992	CXXNameMangler Mangler(*this, Out);
4993	Mangler.getStream() << "_ZTV";
4994	Mangler.mangleNameOrStandardSubstitution(RD);
4995	}
4996
4997	void ItaniumMangleContextImpl::mangleCXXVTT(const CXXRecordDecl *RD,
4998	raw_ostream &Out) {
4999	// <special-name> ::= TT <type> # VTT structure
5000	CXXNameMangler Mangler(*this, Out);
5001	Mangler.getStream() << "_ZTT";
5002	Mangler.mangleNameOrStandardSubstitution(RD);
5003	}
5004
5005	void ItaniumMangleContextImpl::mangleCXXCtorVTable(const CXXRecordDecl *RD,
5006	int64_t Offset,
5007	const CXXRecordDecl *Type,
5008	raw_ostream &Out) {
5009	// <special-name> ::= TC <type> <offset number> _ <base type>
5010	CXXNameMangler Mangler(*this, Out);
5011	Mangler.getStream() << "_ZTC";
5012	Mangler.mangleNameOrStandardSubstitution(RD);
5013	Mangler.getStream() << Offset;
5014	Mangler.getStream() << '_';
5015	Mangler.mangleNameOrStandardSubstitution(Type);
5016	}
5017
5018	void ItaniumMangleContextImpl::mangleCXXRTTI(QualType Ty, raw_ostream &Out) {
5019	// <special-name> ::= TI <type> # typeinfo structure
5020	(0) . __assert_fail ("!Ty.hasQualifiers() && \"RTTI info cannot have top-level qualifiers\"", "/home/seafit/code_projects/clang_source/clang/lib/AST/ItaniumMangle.cpp", 5020, __PRETTY_FUNCTION__))" file_link="../../../include/assert.h.html#88" macro="true">assert(!Ty.hasQualifiers() && "RTTI info cannot have top-level qualifiers");
5021	CXXNameMangler Mangler(*this, Out);
5022	Mangler.getStream() << "_ZTI";
5023	Mangler.mangleType(Ty);
5024	}
5025
5026	void ItaniumMangleContextImpl::mangleCXXRTTIName(QualType Ty,
5027	raw_ostream &Out) {
5028	// <special-name> ::= TS <type> # typeinfo name (null terminated byte string)
5029	CXXNameMangler Mangler(*this, Out);
5030	Mangler.getStream() << "_ZTS";
5031	Mangler.mangleType(Ty);
5032	}
5033
5034	void ItaniumMangleContextImpl::mangleTypeName(QualType Ty, raw_ostream &Out) {
5035	mangleCXXRTTIName(Ty, Out);
5036	}
5037
5038	void ItaniumMangleContextImpl::mangleStringLiteral(const StringLiteral *, raw_ostream &) {
5039	llvm_unreachable("Can't mangle string literals");
5040	}
5041
5042	ItaniumMangleContext *
5043	ItaniumMangleContext::create(ASTContext &Context, DiagnosticsEngine &Diags) {
5044	return new ItaniumMangleContextImpl(Context, Diags);
5045	}
5046

clang::ItaniumMangleContext::create

Clang Project