StmtProfile.cpp revision 203955 
1//===---- StmtProfile.cpp - Profile implementation for Stmt ASTs ----------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file implements the Stmt::Profile method, which builds a unique bit
11// representation that identifies a statement/expression.
12//
13//===----------------------------------------------------------------------===//
14#include "clang/AST/ASTContext.h"
15#include "clang/AST/DeclCXX.h"
16#include "clang/AST/DeclObjC.h"
17#include "clang/AST/DeclTemplate.h"
18#include "clang/AST/Expr.h"
19#include "clang/AST/ExprCXX.h"
20#include "clang/AST/ExprObjC.h"
21#include "clang/AST/StmtVisitor.h"
22#include "llvm/ADT/FoldingSet.h"
23using namespace clang;
24
25namespace {
26  class StmtProfiler : public StmtVisitor<StmtProfiler> {
27    llvm::FoldingSetNodeID &ID;
28    ASTContext &Context;
29    bool Canonical;
30
31  public:
32    StmtProfiler(llvm::FoldingSetNodeID &ID, ASTContext &Context,
33                 bool Canonical)
34      : ID(ID), Context(Context), Canonical(Canonical) { }
35
36    void VisitStmt(Stmt *S);
37
38#define STMT(Node, Base) void Visit##Node(Node *S);
39#include "clang/AST/StmtNodes.def"
40
41    /// \brief Visit a declaration that is referenced within an expression
42    /// or statement.
43    void VisitDecl(Decl *D);
44
45    /// \brief Visit a type that is referenced within an expression or
46    /// statement.
47    void VisitType(QualType T);
48
49    /// \brief Visit a name that occurs within an expression or statement.
50    void VisitName(DeclarationName Name);
51
52    /// \brief Visit a nested-name-specifier that occurs within an expression
53    /// or statement.
54    void VisitNestedNameSpecifier(NestedNameSpecifier *NNS);
55
56    /// \brief Visit a template name that occurs within an expression or
57    /// statement.
58    void VisitTemplateName(TemplateName Name);
59
60    /// \brief Visit template arguments that occur within an expression or
61    /// statement.
62    void VisitTemplateArguments(const TemplateArgumentLoc *Args, unsigned NumArgs);
63
64    /// \brief Visit a single template argument.
65    void VisitTemplateArgument(const TemplateArgument &Arg);
66  };
67}
68
69void StmtProfiler::VisitStmt(Stmt *S) {
70  ID.AddInteger(S->getStmtClass());
71  for (Stmt::child_iterator C = S->child_begin(), CEnd = S->child_end();
72       C != CEnd; ++C)
73    Visit(*C);
74}
75
76void StmtProfiler::VisitDeclStmt(DeclStmt *S) {
77  VisitStmt(S);
78  for (DeclStmt::decl_iterator D = S->decl_begin(), DEnd = S->decl_end();
79       D != DEnd; ++D)
80    VisitDecl(*D);
81}
82
83void StmtProfiler::VisitNullStmt(NullStmt *S) {
84  VisitStmt(S);
85}
86
87void StmtProfiler::VisitCompoundStmt(CompoundStmt *S) {
88  VisitStmt(S);
89}
90
91void StmtProfiler::VisitSwitchCase(SwitchCase *S) {
92  VisitStmt(S);
93}
94
95void StmtProfiler::VisitCaseStmt(CaseStmt *S) {
96  VisitStmt(S);
97}
98
99void StmtProfiler::VisitDefaultStmt(DefaultStmt *S) {
100  VisitStmt(S);
101}
102
103void StmtProfiler::VisitLabelStmt(LabelStmt *S) {
104  VisitStmt(S);
105  VisitName(S->getID());
106}
107
108void StmtProfiler::VisitIfStmt(IfStmt *S) {
109  VisitStmt(S);
110  VisitDecl(S->getConditionVariable());
111}
112
113void StmtProfiler::VisitSwitchStmt(SwitchStmt *S) {
114  VisitStmt(S);
115  VisitDecl(S->getConditionVariable());
116}
117
118void StmtProfiler::VisitWhileStmt(WhileStmt *S) {
119  VisitStmt(S);
120  VisitDecl(S->getConditionVariable());
121}
122
123void StmtProfiler::VisitDoStmt(DoStmt *S) {
124  VisitStmt(S);
125}
126
127void StmtProfiler::VisitForStmt(ForStmt *S) {
128  VisitStmt(S);
129}
130
131void StmtProfiler::VisitGotoStmt(GotoStmt *S) {
132  VisitStmt(S);
133  VisitName(S->getLabel()->getID());
134}
135
136void StmtProfiler::VisitIndirectGotoStmt(IndirectGotoStmt *S) {
137  VisitStmt(S);
138}
139
140void StmtProfiler::VisitContinueStmt(ContinueStmt *S) {
141  VisitStmt(S);
142}
143
144void StmtProfiler::VisitBreakStmt(BreakStmt *S) {
145  VisitStmt(S);
146}
147
148void StmtProfiler::VisitReturnStmt(ReturnStmt *S) {
149  VisitStmt(S);
150}
151
152void StmtProfiler::VisitAsmStmt(AsmStmt *S) {
153  VisitStmt(S);
154  ID.AddBoolean(S->isVolatile());
155  ID.AddBoolean(S->isSimple());
156  VisitStringLiteral(S->getAsmString());
157  ID.AddInteger(S->getNumOutputs());
158  for (unsigned I = 0, N = S->getNumOutputs(); I != N; ++I) {
159    ID.AddString(S->getOutputName(I));
160    VisitStringLiteral(S->getOutputConstraintLiteral(I));
161  }
162  ID.AddInteger(S->getNumInputs());
163  for (unsigned I = 0, N = S->getNumInputs(); I != N; ++I) {
164    ID.AddString(S->getInputName(I));
165    VisitStringLiteral(S->getInputConstraintLiteral(I));
166  }
167  ID.AddInteger(S->getNumClobbers());
168  for (unsigned I = 0, N = S->getNumClobbers(); I != N; ++I)
169    VisitStringLiteral(S->getClobber(I));
170}
171
172void StmtProfiler::VisitCXXCatchStmt(CXXCatchStmt *S) {
173  VisitStmt(S);
174  VisitType(S->getCaughtType());
175}
176
177void StmtProfiler::VisitCXXTryStmt(CXXTryStmt *S) {
178  VisitStmt(S);
179}
180
181void StmtProfiler::VisitObjCForCollectionStmt(ObjCForCollectionStmt *S) {
182  VisitStmt(S);
183}
184
185void StmtProfiler::VisitObjCAtCatchStmt(ObjCAtCatchStmt *S) {
186  VisitStmt(S);
187  ID.AddBoolean(S->hasEllipsis());
188  if (S->getCatchParamDecl())
189    VisitType(S->getCatchParamDecl()->getType());
190}
191
192void StmtProfiler::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *S) {
193  VisitStmt(S);
194}
195
196void StmtProfiler::VisitObjCAtTryStmt(ObjCAtTryStmt *S) {
197  VisitStmt(S);
198}
199
200void StmtProfiler::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
201  VisitStmt(S);
202}
203
204void StmtProfiler::VisitObjCAtThrowStmt(ObjCAtThrowStmt *S) {
205  VisitStmt(S);
206}
207
208void StmtProfiler::VisitExpr(Expr *S) {
209  VisitStmt(S);
210}
211
212void StmtProfiler::VisitDeclRefExpr(DeclRefExpr *S) {
213  VisitExpr(S);
214  VisitNestedNameSpecifier(S->getQualifier());
215  VisitDecl(S->getDecl());
216  VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
217}
218
219void StmtProfiler::VisitPredefinedExpr(PredefinedExpr *S) {
220  VisitExpr(S);
221  ID.AddInteger(S->getIdentType());
222}
223
224void StmtProfiler::VisitIntegerLiteral(IntegerLiteral *S) {
225  VisitExpr(S);
226  S->getValue().Profile(ID);
227}
228
229void StmtProfiler::VisitCharacterLiteral(CharacterLiteral *S) {
230  VisitExpr(S);
231  ID.AddBoolean(S->isWide());
232  ID.AddInteger(S->getValue());
233}
234
235void StmtProfiler::VisitFloatingLiteral(FloatingLiteral *S) {
236  VisitExpr(S);
237  S->getValue().Profile(ID);
238  ID.AddBoolean(S->isExact());
239}
240
241void StmtProfiler::VisitImaginaryLiteral(ImaginaryLiteral *S) {
242  VisitExpr(S);
243}
244
245void StmtProfiler::VisitStringLiteral(StringLiteral *S) {
246  VisitExpr(S);
247  ID.AddString(S->getString());
248  ID.AddBoolean(S->isWide());
249}
250
251void StmtProfiler::VisitParenExpr(ParenExpr *S) {
252  VisitExpr(S);
253}
254
255void StmtProfiler::VisitParenListExpr(ParenListExpr *S) {
256  VisitExpr(S);
257}
258
259void StmtProfiler::VisitUnaryOperator(UnaryOperator *S) {
260  VisitExpr(S);
261  ID.AddInteger(S->getOpcode());
262}
263
264void StmtProfiler::VisitSizeOfAlignOfExpr(SizeOfAlignOfExpr *S) {
265  VisitExpr(S);
266  ID.AddBoolean(S->isSizeOf());
267  if (S->isArgumentType())
268    VisitType(S->getArgumentType());
269}
270
271void StmtProfiler::VisitArraySubscriptExpr(ArraySubscriptExpr *S) {
272  VisitExpr(S);
273}
274
275void StmtProfiler::VisitCallExpr(CallExpr *S) {
276  VisitExpr(S);
277}
278
279void StmtProfiler::VisitMemberExpr(MemberExpr *S) {
280  VisitExpr(S);
281  VisitDecl(S->getMemberDecl());
282  VisitNestedNameSpecifier(S->getQualifier());
283  ID.AddBoolean(S->isArrow());
284}
285
286void StmtProfiler::VisitCompoundLiteralExpr(CompoundLiteralExpr *S) {
287  VisitExpr(S);
288  ID.AddBoolean(S->isFileScope());
289}
290
291void StmtProfiler::VisitCastExpr(CastExpr *S) {
292  VisitExpr(S);
293}
294
295void StmtProfiler::VisitImplicitCastExpr(ImplicitCastExpr *S) {
296  VisitCastExpr(S);
297  ID.AddBoolean(S->isLvalueCast());
298}
299
300void StmtProfiler::VisitExplicitCastExpr(ExplicitCastExpr *S) {
301  VisitCastExpr(S);
302  VisitType(S->getTypeAsWritten());
303}
304
305void StmtProfiler::VisitCStyleCastExpr(CStyleCastExpr *S) {
306  VisitExplicitCastExpr(S);
307}
308
309void StmtProfiler::VisitBinaryOperator(BinaryOperator *S) {
310  VisitExpr(S);
311  ID.AddInteger(S->getOpcode());
312}
313
314void StmtProfiler::VisitCompoundAssignOperator(CompoundAssignOperator *S) {
315  VisitBinaryOperator(S);
316}
317
318void StmtProfiler::VisitConditionalOperator(ConditionalOperator *S) {
319  VisitExpr(S);
320}
321
322void StmtProfiler::VisitAddrLabelExpr(AddrLabelExpr *S) {
323  VisitExpr(S);
324  VisitName(S->getLabel()->getID());
325}
326
327void StmtProfiler::VisitStmtExpr(StmtExpr *S) {
328  VisitExpr(S);
329}
330
331void StmtProfiler::VisitTypesCompatibleExpr(TypesCompatibleExpr *S) {
332  VisitExpr(S);
333  VisitType(S->getArgType1());
334  VisitType(S->getArgType2());
335}
336
337void StmtProfiler::VisitShuffleVectorExpr(ShuffleVectorExpr *S) {
338  VisitExpr(S);
339}
340
341void StmtProfiler::VisitChooseExpr(ChooseExpr *S) {
342  VisitExpr(S);
343}
344
345void StmtProfiler::VisitGNUNullExpr(GNUNullExpr *S) {
346  VisitExpr(S);
347}
348
349void StmtProfiler::VisitVAArgExpr(VAArgExpr *S) {
350  VisitExpr(S);
351}
352
353void StmtProfiler::VisitInitListExpr(InitListExpr *S) {
354  if (S->getSyntacticForm()) {
355    VisitInitListExpr(S->getSyntacticForm());
356    return;
357  }
358
359  VisitExpr(S);
360}
361
362void StmtProfiler::VisitDesignatedInitExpr(DesignatedInitExpr *S) {
363  VisitExpr(S);
364  ID.AddBoolean(S->usesGNUSyntax());
365  for (DesignatedInitExpr::designators_iterator D = S->designators_begin(),
366                                             DEnd = S->designators_end();
367       D != DEnd; ++D) {
368    if (D->isFieldDesignator()) {
369      ID.AddInteger(0);
370      VisitName(D->getFieldName());
371      continue;
372    }
373
374    if (D->isArrayDesignator()) {
375      ID.AddInteger(1);
376    } else {
377      assert(D->isArrayRangeDesignator());
378      ID.AddInteger(2);
379    }
380    ID.AddInteger(D->getFirstExprIndex());
381  }
382}
383
384void StmtProfiler::VisitImplicitValueInitExpr(ImplicitValueInitExpr *S) {
385  VisitExpr(S);
386}
387
388void StmtProfiler::VisitExtVectorElementExpr(ExtVectorElementExpr *S) {
389  VisitExpr(S);
390  VisitName(&S->getAccessor());
391}
392
393void StmtProfiler::VisitBlockExpr(BlockExpr *S) {
394  VisitExpr(S);
395  VisitDecl(S->getBlockDecl());
396}
397
398void StmtProfiler::VisitBlockDeclRefExpr(BlockDeclRefExpr *S) {
399  VisitExpr(S);
400  VisitDecl(S->getDecl());
401  ID.AddBoolean(S->isByRef());
402  ID.AddBoolean(S->isConstQualAdded());
403}
404
405void StmtProfiler::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *S) {
406  VisitCallExpr(S);
407  ID.AddInteger(S->getOperator());
408}
409
410void StmtProfiler::VisitCXXMemberCallExpr(CXXMemberCallExpr *S) {
411  VisitCallExpr(S);
412}
413
414void StmtProfiler::VisitCXXNamedCastExpr(CXXNamedCastExpr *S) {
415  VisitExplicitCastExpr(S);
416}
417
418void StmtProfiler::VisitCXXStaticCastExpr(CXXStaticCastExpr *S) {
419  VisitCXXNamedCastExpr(S);
420}
421
422void StmtProfiler::VisitCXXDynamicCastExpr(CXXDynamicCastExpr *S) {
423  VisitCXXNamedCastExpr(S);
424}
425
426void StmtProfiler::VisitCXXReinterpretCastExpr(CXXReinterpretCastExpr *S) {
427  VisitCXXNamedCastExpr(S);
428}
429
430void StmtProfiler::VisitCXXConstCastExpr(CXXConstCastExpr *S) {
431  VisitCXXNamedCastExpr(S);
432}
433
434void StmtProfiler::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *S) {
435  VisitExpr(S);
436  ID.AddBoolean(S->getValue());
437}
438
439void StmtProfiler::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *S) {
440  VisitExpr(S);
441}
442
443void StmtProfiler::VisitCXXTypeidExpr(CXXTypeidExpr *S) {
444  VisitExpr(S);
445  if (S->isTypeOperand())
446    VisitType(S->getTypeOperand());
447}
448
449void StmtProfiler::VisitCXXThisExpr(CXXThisExpr *S) {
450  VisitExpr(S);
451}
452
453void StmtProfiler::VisitCXXThrowExpr(CXXThrowExpr *S) {
454  VisitExpr(S);
455}
456
457void StmtProfiler::VisitCXXDefaultArgExpr(CXXDefaultArgExpr *S) {
458  VisitExpr(S);
459  VisitDecl(S->getParam());
460}
461
462void StmtProfiler::VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *S) {
463  VisitExpr(S);
464  VisitDecl(
465         const_cast<CXXDestructorDecl *>(S->getTemporary()->getDestructor()));
466}
467
468void StmtProfiler::VisitCXXBindReferenceExpr(CXXBindReferenceExpr *S) {
469  VisitExpr(S);
470}
471
472void StmtProfiler::VisitCXXConstructExpr(CXXConstructExpr *S) {
473  VisitExpr(S);
474  VisitDecl(S->getConstructor());
475  ID.AddBoolean(S->isElidable());
476}
477
478void StmtProfiler::VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr *S) {
479  VisitExplicitCastExpr(S);
480}
481
482void StmtProfiler::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *S) {
483  VisitCXXConstructExpr(S);
484}
485
486void StmtProfiler::VisitCXXZeroInitValueExpr(CXXZeroInitValueExpr *S) {
487  VisitExpr(S);
488}
489
490void StmtProfiler::VisitCXXDeleteExpr(CXXDeleteExpr *S) {
491  VisitExpr(S);
492  ID.AddBoolean(S->isGlobalDelete());
493  ID.AddBoolean(S->isArrayForm());
494  VisitDecl(S->getOperatorDelete());
495}
496
497
498void StmtProfiler::VisitCXXNewExpr(CXXNewExpr *S) {
499  VisitExpr(S);
500  VisitType(S->getAllocatedType());
501  VisitDecl(S->getOperatorNew());
502  VisitDecl(S->getOperatorDelete());
503  VisitDecl(S->getConstructor());
504  ID.AddBoolean(S->isArray());
505  ID.AddInteger(S->getNumPlacementArgs());
506  ID.AddBoolean(S->isGlobalNew());
507  ID.AddBoolean(S->isParenTypeId());
508  ID.AddBoolean(S->hasInitializer());
509  ID.AddInteger(S->getNumConstructorArgs());
510}
511
512void StmtProfiler::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *S) {
513  VisitExpr(S);
514  ID.AddBoolean(S->isArrow());
515  VisitNestedNameSpecifier(S->getQualifier());
516  VisitType(S->getDestroyedType());
517}
518
519void
520StmtProfiler::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *S) {
521  VisitExpr(S);
522  VisitNestedNameSpecifier(S->getQualifier());
523  VisitName(S->getName());
524  ID.AddBoolean(S->hasExplicitTemplateArgs());
525  if (S->hasExplicitTemplateArgs())
526    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
527}
528
529void StmtProfiler::VisitUnaryTypeTraitExpr(UnaryTypeTraitExpr *S) {
530  VisitExpr(S);
531  ID.AddInteger(S->getTrait());
532  VisitType(S->getQueriedType());
533}
534
535void
536StmtProfiler::VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *S) {
537  VisitExpr(S);
538  VisitName(S->getDeclName());
539  VisitNestedNameSpecifier(S->getQualifier());
540  ID.AddBoolean(S->hasExplicitTemplateArgs());
541  if (S->hasExplicitTemplateArgs())
542    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
543}
544
545void StmtProfiler::VisitCXXExprWithTemporaries(CXXExprWithTemporaries *S) {
546  VisitExpr(S);
547  for (unsigned I = 0, N = S->getNumTemporaries(); I != N; ++I)
548    VisitDecl(
549      const_cast<CXXDestructorDecl *>(S->getTemporary(I)->getDestructor()));
550}
551
552void
553StmtProfiler::VisitCXXUnresolvedConstructExpr(CXXUnresolvedConstructExpr *S) {
554  VisitExpr(S);
555  VisitType(S->getTypeAsWritten());
556}
557
558void
559StmtProfiler::VisitCXXDependentScopeMemberExpr(CXXDependentScopeMemberExpr *S) {
560  ID.AddBoolean(S->isImplicitAccess());
561  if (!S->isImplicitAccess()) {
562    VisitExpr(S);
563    ID.AddBoolean(S->isArrow());
564  }
565  VisitNestedNameSpecifier(S->getQualifier());
566  VisitName(S->getMember());
567  ID.AddBoolean(S->hasExplicitTemplateArgs());
568  if (S->hasExplicitTemplateArgs())
569    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
570}
571
572void StmtProfiler::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *S) {
573  ID.AddBoolean(S->isImplicitAccess());
574  if (!S->isImplicitAccess()) {
575    VisitExpr(S);
576    ID.AddBoolean(S->isArrow());
577  }
578  VisitNestedNameSpecifier(S->getQualifier());
579  VisitName(S->getMemberName());
580  ID.AddBoolean(S->hasExplicitTemplateArgs());
581  if (S->hasExplicitTemplateArgs())
582    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
583}
584
585void StmtProfiler::VisitObjCStringLiteral(ObjCStringLiteral *S) {
586  VisitExpr(S);
587}
588
589void StmtProfiler::VisitObjCEncodeExpr(ObjCEncodeExpr *S) {
590  VisitExpr(S);
591  VisitType(S->getEncodedType());
592}
593
594void StmtProfiler::VisitObjCSelectorExpr(ObjCSelectorExpr *S) {
595  VisitExpr(S);
596  VisitName(S->getSelector());
597}
598
599void StmtProfiler::VisitObjCProtocolExpr(ObjCProtocolExpr *S) {
600  VisitExpr(S);
601  VisitDecl(S->getProtocol());
602}
603
604void StmtProfiler::VisitObjCIvarRefExpr(ObjCIvarRefExpr *S) {
605  VisitExpr(S);
606  VisitDecl(S->getDecl());
607  ID.AddBoolean(S->isArrow());
608  ID.AddBoolean(S->isFreeIvar());
609}
610
611void StmtProfiler::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *S) {
612  VisitExpr(S);
613  VisitDecl(S->getProperty());
614}
615
616void StmtProfiler::VisitObjCImplicitSetterGetterRefExpr(
617                                  ObjCImplicitSetterGetterRefExpr *S) {
618  VisitExpr(S);
619  VisitDecl(S->getGetterMethod());
620  VisitDecl(S->getSetterMethod());
621  VisitDecl(S->getInterfaceDecl());
622}
623
624void StmtProfiler::VisitObjCMessageExpr(ObjCMessageExpr *S) {
625  VisitExpr(S);
626  VisitName(S->getSelector());
627  VisitDecl(S->getMethodDecl());
628}
629
630void StmtProfiler::VisitObjCSuperExpr(ObjCSuperExpr *S) {
631  VisitExpr(S);
632}
633
634void StmtProfiler::VisitObjCIsaExpr(ObjCIsaExpr *S) {
635  VisitExpr(S);
636  ID.AddBoolean(S->isArrow());
637}
638
639void StmtProfiler::VisitDecl(Decl *D) {
640  ID.AddInteger(D? D->getKind() : 0);
641
642  if (Canonical && D) {
643    if (NonTypeTemplateParmDecl *NTTP = dyn_cast<NonTypeTemplateParmDecl>(D)) {
644      ID.AddInteger(NTTP->getDepth());
645      ID.AddInteger(NTTP->getIndex());
646      VisitType(NTTP->getType());
647      return;
648    }
649
650    if (ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) {
651      // The Itanium C++ ABI uses the type of a parameter when mangling
652      // expressions that involve function parameters, so we will use the
653      // parameter's type for establishing function parameter identity. That
654      // way, our definition of "equivalent" (per C++ [temp.over.link])
655      // matches the definition of "equivalent" used for name mangling.
656      VisitType(Parm->getType());
657      return;
658    }
659
660    if (TemplateTemplateParmDecl *TTP = dyn_cast<TemplateTemplateParmDecl>(D)) {
661      ID.AddInteger(TTP->getDepth());
662      ID.AddInteger(TTP->getIndex());
663      return;
664    }
665  }
666
667  ID.AddPointer(D? D->getCanonicalDecl() : 0);
668}
669
670void StmtProfiler::VisitType(QualType T) {
671  if (Canonical)
672    T = Context.getCanonicalType(T);
673
674  ID.AddPointer(T.getAsOpaquePtr());
675}
676
677void StmtProfiler::VisitName(DeclarationName Name) {
678  ID.AddPointer(Name.getAsOpaquePtr());
679}
680
681void StmtProfiler::VisitNestedNameSpecifier(NestedNameSpecifier *NNS) {
682  if (Canonical)
683    NNS = Context.getCanonicalNestedNameSpecifier(NNS);
684  ID.AddPointer(NNS);
685}
686
687void StmtProfiler::VisitTemplateName(TemplateName Name) {
688  if (Canonical)
689    Name = Context.getCanonicalTemplateName(Name);
690
691  Name.Profile(ID);
692}
693
694void StmtProfiler::VisitTemplateArguments(const TemplateArgumentLoc *Args,
695                                          unsigned NumArgs) {
696  ID.AddInteger(NumArgs);
697  for (unsigned I = 0; I != NumArgs; ++I)
698    VisitTemplateArgument(Args[I].getArgument());
699}
700
701void StmtProfiler::VisitTemplateArgument(const TemplateArgument &Arg) {
702  // Mostly repetitive with TemplateArgument::Profile!
703  ID.AddInteger(Arg.getKind());
704  switch (Arg.getKind()) {
705  case TemplateArgument::Null:
706    break;
707
708  case TemplateArgument::Type:
709    VisitType(Arg.getAsType());
710    break;
711
712  case TemplateArgument::Template:
713    VisitTemplateName(Arg.getAsTemplate());
714    break;
715
716  case TemplateArgument::Declaration:
717    VisitDecl(Arg.getAsDecl());
718    break;
719
720  case TemplateArgument::Integral:
721    Arg.getAsIntegral()->Profile(ID);
722    VisitType(Arg.getIntegralType());
723    break;
724
725  case TemplateArgument::Expression:
726    Visit(Arg.getAsExpr());
727    break;
728
729  case TemplateArgument::Pack:
730    const TemplateArgument *Pack = Arg.pack_begin();
731    for (unsigned i = 0, e = Arg.pack_size(); i != e; ++i)
732      VisitTemplateArgument(Pack[i]);
733    break;
734  }
735}
736
737void Stmt::Profile(llvm::FoldingSetNodeID &ID, ASTContext &Context,
738                   bool Canonical) {
739  StmtProfiler Profiler(ID, Context, Canonical);
740  Profiler.Visit(this);
741}
742