StmtProfile.cpp revision a71d819bb8f50c28938db0f2867d3fb6e2ce5910 
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"
23#include "llvm/Support/Compiler.h"
24using namespace clang;
25
26namespace {
27  class VISIBILITY_HIDDEN StmtProfiler : public StmtVisitor<StmtProfiler> {
28    llvm::FoldingSetNodeID &ID;
29    ASTContext &Context;
30    bool Canonical;
31
32  public:
33    StmtProfiler(llvm::FoldingSetNodeID &ID, ASTContext &Context,
34                 bool Canonical)
35      : ID(ID), Context(Context), Canonical(Canonical) { }
36
37    void VisitStmt(Stmt *S);
38
39#define STMT(Node, Base) void Visit##Node(Node *S);
40#include "clang/AST/StmtNodes.def"
41
42    /// \brief Visit a declaration that is referenced within an expression
43    /// or statement.
44    void VisitDecl(Decl *D);
45
46    /// \brief Visit a type that is referenced within an expression or
47    /// statement.
48    void VisitType(QualType T);
49
50    /// \brief Visit a name that occurs within an expression or statement.
51    void VisitName(DeclarationName Name);
52
53    /// \brief Visit a nested-name-specifier that occurs within an expression
54    /// or statement.
55    void VisitNestedNameSpecifier(NestedNameSpecifier *NNS);
56
57    /// \brief Visit a template name that occurs within an expression or
58    /// statement.
59    void VisitTemplateName(TemplateName Name);
60
61    /// \brief Visit template arguments that occur within an expression or
62    /// statement.
63    void VisitTemplateArguments(const TemplateArgument *Args, unsigned NumArgs);
64  };
65}
66
67void StmtProfiler::VisitStmt(Stmt *S) {
68  ID.AddInteger(S->getStmtClass());
69  for (Stmt::child_iterator C = S->child_begin(), CEnd = S->child_end();
70       C != CEnd; ++C)
71    Visit(*C);
72}
73
74void StmtProfiler::VisitDeclStmt(DeclStmt *S) {
75  VisitStmt(S);
76  for (DeclStmt::decl_iterator D = S->decl_begin(), DEnd = S->decl_end();
77       D != DEnd; ++D)
78    VisitDecl(*D);
79}
80
81void StmtProfiler::VisitNullStmt(NullStmt *S) {
82  VisitStmt(S);
83}
84
85void StmtProfiler::VisitCompoundStmt(CompoundStmt *S) {
86  VisitStmt(S);
87}
88
89void StmtProfiler::VisitSwitchCase(SwitchCase *S) {
90  VisitStmt(S);
91}
92
93void StmtProfiler::VisitCaseStmt(CaseStmt *S) {
94  VisitStmt(S);
95}
96
97void StmtProfiler::VisitDefaultStmt(DefaultStmt *S) {
98  VisitStmt(S);
99}
100
101void StmtProfiler::VisitLabelStmt(LabelStmt *S) {
102  VisitStmt(S);
103  VisitName(S->getID());
104}
105
106void StmtProfiler::VisitIfStmt(IfStmt *S) {
107  VisitStmt(S);
108}
109
110void StmtProfiler::VisitSwitchStmt(SwitchStmt *S) {
111  VisitStmt(S);
112}
113
114void StmtProfiler::VisitWhileStmt(WhileStmt *S) {
115  VisitStmt(S);
116}
117
118void StmtProfiler::VisitDoStmt(DoStmt *S) {
119  VisitStmt(S);
120}
121
122void StmtProfiler::VisitForStmt(ForStmt *S) {
123  VisitStmt(S);
124}
125
126void StmtProfiler::VisitGotoStmt(GotoStmt *S) {
127  VisitStmt(S);
128  VisitName(S->getLabel()->getID());
129}
130
131void StmtProfiler::VisitIndirectGotoStmt(IndirectGotoStmt *S) {
132  VisitStmt(S);
133}
134
135void StmtProfiler::VisitContinueStmt(ContinueStmt *S) {
136  VisitStmt(S);
137}
138
139void StmtProfiler::VisitBreakStmt(BreakStmt *S) {
140  VisitStmt(S);
141}
142
143void StmtProfiler::VisitReturnStmt(ReturnStmt *S) {
144  VisitStmt(S);
145}
146
147void StmtProfiler::VisitAsmStmt(AsmStmt *S) {
148  VisitStmt(S);
149  ID.AddBoolean(S->isVolatile());
150  ID.AddBoolean(S->isSimple());
151  VisitStringLiteral(S->getAsmString());
152  ID.AddInteger(S->getNumOutputs());
153  for (unsigned I = 0, N = S->getNumOutputs(); I != N; ++I) {
154    ID.AddString(S->getOutputName(I));
155    VisitStringLiteral(S->getOutputConstraintLiteral(I));
156  }
157  ID.AddInteger(S->getNumInputs());
158  for (unsigned I = 0, N = S->getNumInputs(); I != N; ++I) {
159    ID.AddString(S->getInputName(I));
160    VisitStringLiteral(S->getInputConstraintLiteral(I));
161  }
162  ID.AddInteger(S->getNumClobbers());
163  for (unsigned I = 0, N = S->getNumClobbers(); I != N; ++I)
164    VisitStringLiteral(S->getClobber(I));
165}
166
167void StmtProfiler::VisitCXXCatchStmt(CXXCatchStmt *S) {
168  VisitStmt(S);
169  VisitType(S->getCaughtType());
170}
171
172void StmtProfiler::VisitCXXTryStmt(CXXTryStmt *S) {
173  VisitStmt(S);
174}
175
176void StmtProfiler::VisitObjCForCollectionStmt(ObjCForCollectionStmt *S) {
177  VisitStmt(S);
178}
179
180void StmtProfiler::VisitObjCAtCatchStmt(ObjCAtCatchStmt *S) {
181  VisitStmt(S);
182  ID.AddBoolean(S->hasEllipsis());
183  if (S->getCatchParamDecl())
184    VisitType(S->getCatchParamDecl()->getType());
185}
186
187void StmtProfiler::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *S) {
188  VisitStmt(S);
189}
190
191void StmtProfiler::VisitObjCAtTryStmt(ObjCAtTryStmt *S) {
192  VisitStmt(S);
193}
194
195void StmtProfiler::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
196  VisitStmt(S);
197}
198
199void StmtProfiler::VisitObjCAtThrowStmt(ObjCAtThrowStmt *S) {
200  VisitStmt(S);
201}
202
203void StmtProfiler::VisitExpr(Expr *S) {
204  VisitStmt(S);
205}
206
207void StmtProfiler::VisitDeclRefExpr(DeclRefExpr *S) {
208  VisitExpr(S);
209  VisitDecl(S->getDecl());
210}
211
212void StmtProfiler::VisitPredefinedExpr(PredefinedExpr *S) {
213  VisitExpr(S);
214  ID.AddInteger(S->getIdentType());
215}
216
217void StmtProfiler::VisitIntegerLiteral(IntegerLiteral *S) {
218  VisitExpr(S);
219  S->getValue().Profile(ID);
220}
221
222void StmtProfiler::VisitCharacterLiteral(CharacterLiteral *S) {
223  VisitExpr(S);
224  ID.AddBoolean(S->isWide());
225  ID.AddInteger(S->getValue());
226}
227
228void StmtProfiler::VisitFloatingLiteral(FloatingLiteral *S) {
229  VisitExpr(S);
230  S->getValue().Profile(ID);
231  ID.AddBoolean(S->isExact());
232}
233
234void StmtProfiler::VisitImaginaryLiteral(ImaginaryLiteral *S) {
235  VisitExpr(S);
236}
237
238void StmtProfiler::VisitStringLiteral(StringLiteral *S) {
239  VisitExpr(S);
240  ID.AddString(S->getStrData(), S->getStrData() + S->getByteLength());
241  ID.AddBoolean(S->isWide());
242}
243
244void StmtProfiler::VisitParenExpr(ParenExpr *S) {
245  VisitExpr(S);
246}
247
248void StmtProfiler::VisitParenListExpr(ParenListExpr *S) {
249  VisitExpr(S);
250}
251
252void StmtProfiler::VisitUnaryOperator(UnaryOperator *S) {
253  VisitExpr(S);
254  ID.AddInteger(S->getOpcode());
255}
256
257void StmtProfiler::VisitSizeOfAlignOfExpr(SizeOfAlignOfExpr *S) {
258  VisitExpr(S);
259  ID.AddBoolean(S->isSizeOf());
260  if (S->isArgumentType())
261    VisitType(S->getArgumentType());
262}
263
264void StmtProfiler::VisitArraySubscriptExpr(ArraySubscriptExpr *S) {
265  VisitExpr(S);
266}
267
268void StmtProfiler::VisitCallExpr(CallExpr *S) {
269  VisitExpr(S);
270}
271
272void StmtProfiler::VisitMemberExpr(MemberExpr *S) {
273  VisitExpr(S);
274  VisitDecl(S->getMemberDecl());
275  VisitNestedNameSpecifier(S->getQualifier());
276  ID.AddBoolean(S->isArrow());
277}
278
279void StmtProfiler::VisitCompoundLiteralExpr(CompoundLiteralExpr *S) {
280  VisitExpr(S);
281  ID.AddBoolean(S->isFileScope());
282}
283
284void StmtProfiler::VisitCastExpr(CastExpr *S) {
285  VisitExpr(S);
286}
287
288void StmtProfiler::VisitImplicitCastExpr(ImplicitCastExpr *S) {
289  VisitCastExpr(S);
290  ID.AddBoolean(S->isLvalueCast());
291}
292
293void StmtProfiler::VisitExplicitCastExpr(ExplicitCastExpr *S) {
294  VisitCastExpr(S);
295  VisitType(S->getTypeAsWritten());
296}
297
298void StmtProfiler::VisitCStyleCastExpr(CStyleCastExpr *S) {
299  VisitExplicitCastExpr(S);
300}
301
302void StmtProfiler::VisitBinaryOperator(BinaryOperator *S) {
303  VisitExpr(S);
304  ID.AddInteger(S->getOpcode());
305}
306
307void StmtProfiler::VisitCompoundAssignOperator(CompoundAssignOperator *S) {
308  VisitBinaryOperator(S);
309}
310
311void StmtProfiler::VisitConditionalOperator(ConditionalOperator *S) {
312  VisitExpr(S);
313}
314
315void StmtProfiler::VisitAddrLabelExpr(AddrLabelExpr *S) {
316  VisitExpr(S);
317  VisitName(S->getLabel()->getID());
318}
319
320void StmtProfiler::VisitStmtExpr(StmtExpr *S) {
321  VisitExpr(S);
322}
323
324void StmtProfiler::VisitTypesCompatibleExpr(TypesCompatibleExpr *S) {
325  VisitExpr(S);
326  VisitType(S->getArgType1());
327  VisitType(S->getArgType2());
328}
329
330void StmtProfiler::VisitShuffleVectorExpr(ShuffleVectorExpr *S) {
331  VisitExpr(S);
332}
333
334void StmtProfiler::VisitChooseExpr(ChooseExpr *S) {
335  VisitExpr(S);
336}
337
338void StmtProfiler::VisitGNUNullExpr(GNUNullExpr *S) {
339  VisitExpr(S);
340}
341
342void StmtProfiler::VisitVAArgExpr(VAArgExpr *S) {
343  VisitExpr(S);
344}
345
346void StmtProfiler::VisitInitListExpr(InitListExpr *S) {
347  if (S->getSyntacticForm()) {
348    VisitInitListExpr(S->getSyntacticForm());
349    return;
350  }
351
352  VisitExpr(S);
353}
354
355void StmtProfiler::VisitDesignatedInitExpr(DesignatedInitExpr *S) {
356  VisitExpr(S);
357  ID.AddBoolean(S->usesGNUSyntax());
358  for (DesignatedInitExpr::designators_iterator D = S->designators_begin(),
359                                             DEnd = S->designators_end();
360       D != DEnd; ++D) {
361    if (D->isFieldDesignator()) {
362      ID.AddInteger(0);
363      VisitName(D->getFieldName());
364      continue;
365    }
366
367    if (D->isArrayDesignator()) {
368      ID.AddInteger(1);
369    } else {
370      assert(D->isArrayRangeDesignator());
371      ID.AddInteger(2);
372    }
373    ID.AddInteger(D->getFirstExprIndex());
374  }
375}
376
377void StmtProfiler::VisitImplicitValueInitExpr(ImplicitValueInitExpr *S) {
378  VisitExpr(S);
379}
380
381void StmtProfiler::VisitExtVectorElementExpr(ExtVectorElementExpr *S) {
382  VisitExpr(S);
383  VisitName(&S->getAccessor());
384}
385
386void StmtProfiler::VisitBlockExpr(BlockExpr *S) {
387  VisitExpr(S);
388  VisitDecl(S->getBlockDecl());
389}
390
391void StmtProfiler::VisitBlockDeclRefExpr(BlockDeclRefExpr *S) {
392  VisitExpr(S);
393  VisitDecl(S->getDecl());
394  ID.AddBoolean(S->isByRef());
395  ID.AddBoolean(S->isConstQualAdded());
396}
397
398void StmtProfiler::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *S) {
399  VisitCallExpr(S);
400  ID.AddInteger(S->getOperator());
401}
402
403void StmtProfiler::VisitCXXMemberCallExpr(CXXMemberCallExpr *S) {
404  VisitCallExpr(S);
405}
406
407void StmtProfiler::VisitCXXNamedCastExpr(CXXNamedCastExpr *S) {
408  VisitExplicitCastExpr(S);
409}
410
411void StmtProfiler::VisitCXXStaticCastExpr(CXXStaticCastExpr *S) {
412  VisitCXXNamedCastExpr(S);
413}
414
415void StmtProfiler::VisitCXXDynamicCastExpr(CXXDynamicCastExpr *S) {
416  VisitCXXNamedCastExpr(S);
417}
418
419void StmtProfiler::VisitCXXReinterpretCastExpr(CXXReinterpretCastExpr *S) {
420  VisitCXXNamedCastExpr(S);
421}
422
423void StmtProfiler::VisitCXXConstCastExpr(CXXConstCastExpr *S) {
424  VisitCXXNamedCastExpr(S);
425}
426
427void StmtProfiler::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *S) {
428  VisitExpr(S);
429  ID.AddBoolean(S->getValue());
430}
431
432void StmtProfiler::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *S) {
433  VisitExpr(S);
434}
435
436void StmtProfiler::VisitCXXTypeidExpr(CXXTypeidExpr *S) {
437  VisitExpr(S);
438  if (S->isTypeOperand())
439    VisitType(S->getTypeOperand());
440}
441
442void StmtProfiler::VisitCXXThisExpr(CXXThisExpr *S) {
443  VisitExpr(S);
444}
445
446void StmtProfiler::VisitCXXThrowExpr(CXXThrowExpr *S) {
447  VisitExpr(S);
448}
449
450void StmtProfiler::VisitCXXDefaultArgExpr(CXXDefaultArgExpr *S) {
451  VisitExpr(S);
452  VisitDecl(S->getParam());
453}
454
455void StmtProfiler::VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *S) {
456  VisitExpr(S);
457  VisitDecl(
458         const_cast<CXXDestructorDecl *>(S->getTemporary()->getDestructor()));
459}
460
461void StmtProfiler::VisitCXXConstructExpr(CXXConstructExpr *S) {
462  VisitExpr(S);
463  VisitDecl(S->getConstructor());
464  ID.AddBoolean(S->isElidable());
465}
466
467void StmtProfiler::VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr *S) {
468  VisitExplicitCastExpr(S);
469}
470
471void StmtProfiler::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *S) {
472  VisitCXXConstructExpr(S);
473}
474
475void StmtProfiler::VisitCXXZeroInitValueExpr(CXXZeroInitValueExpr *S) {
476  VisitExpr(S);
477}
478
479void StmtProfiler::VisitCXXConditionDeclExpr(CXXConditionDeclExpr *S) {
480  VisitDeclRefExpr(S);
481}
482
483void StmtProfiler::VisitCXXDeleteExpr(CXXDeleteExpr *S) {
484  VisitExpr(S);
485  ID.AddBoolean(S->isGlobalDelete());
486  ID.AddBoolean(S->isArrayForm());
487  VisitDecl(S->getOperatorDelete());
488}
489
490
491void StmtProfiler::VisitCXXNewExpr(CXXNewExpr *S) {
492  VisitExpr(S);
493  VisitType(S->getAllocatedType());
494  VisitDecl(S->getOperatorNew());
495  VisitDecl(S->getOperatorDelete());
496  VisitDecl(S->getConstructor());
497  ID.AddBoolean(S->isArray());
498  ID.AddInteger(S->getNumPlacementArgs());
499  ID.AddBoolean(S->isGlobalNew());
500  ID.AddBoolean(S->isParenTypeId());
501  ID.AddBoolean(S->hasInitializer());
502  ID.AddInteger(S->getNumConstructorArgs());
503}
504
505void StmtProfiler::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *S) {
506  VisitExpr(S);
507  ID.AddBoolean(S->isArrow());
508  VisitNestedNameSpecifier(S->getQualifier());
509  VisitType(S->getDestroyedType());
510}
511
512void
513StmtProfiler::VisitUnresolvedFunctionNameExpr(UnresolvedFunctionNameExpr *S) {
514  VisitExpr(S);
515  VisitName(S->getName());
516}
517
518void StmtProfiler::VisitUnaryTypeTraitExpr(UnaryTypeTraitExpr *S) {
519  VisitExpr(S);
520  ID.AddInteger(S->getTrait());
521  VisitType(S->getQueriedType());
522}
523
524void StmtProfiler::VisitQualifiedDeclRefExpr(QualifiedDeclRefExpr *S) {
525  VisitDeclRefExpr(S);
526  VisitNestedNameSpecifier(S->getQualifier());
527}
528
529void StmtProfiler::VisitUnresolvedDeclRefExpr(UnresolvedDeclRefExpr *S) {
530  VisitExpr(S);
531  VisitName(S->getDeclName());
532  VisitNestedNameSpecifier(S->getQualifier());
533  ID.AddBoolean(S->isAddressOfOperand());
534}
535
536void StmtProfiler::VisitTemplateIdRefExpr(TemplateIdRefExpr *S) {
537  VisitExpr(S);
538  VisitNestedNameSpecifier(S->getQualifier());
539  VisitTemplateName(S->getTemplateName());
540  VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
541}
542
543void StmtProfiler::VisitCXXExprWithTemporaries(CXXExprWithTemporaries *S) {
544  VisitExpr(S);
545  ID.AddBoolean(S->shouldDestroyTemporaries());
546  for (unsigned I = 0, N = S->getNumTemporaries(); I != N; ++I)
547    VisitDecl(
548      const_cast<CXXDestructorDecl *>(S->getTemporary(I)->getDestructor()));
549}
550
551void
552StmtProfiler::VisitCXXUnresolvedConstructExpr(CXXUnresolvedConstructExpr *S) {
553  VisitExpr(S);
554  VisitType(S->getTypeAsWritten());
555}
556
557void StmtProfiler::VisitCXXUnresolvedMemberExpr(CXXUnresolvedMemberExpr *S) {
558  VisitExpr(S);
559  ID.AddBoolean(S->isArrow());
560  VisitNestedNameSpecifier(S->getQualifier());
561  VisitName(S->getMember());
562}
563
564void StmtProfiler::VisitObjCStringLiteral(ObjCStringLiteral *S) {
565  VisitExpr(S);
566}
567
568void StmtProfiler::VisitObjCEncodeExpr(ObjCEncodeExpr *S) {
569  VisitExpr(S);
570  VisitType(S->getEncodedType());
571}
572
573void StmtProfiler::VisitObjCSelectorExpr(ObjCSelectorExpr *S) {
574  VisitExpr(S);
575  VisitName(S->getSelector());
576}
577
578void StmtProfiler::VisitObjCProtocolExpr(ObjCProtocolExpr *S) {
579  VisitExpr(S);
580  VisitDecl(S->getProtocol());
581}
582
583void StmtProfiler::VisitObjCIvarRefExpr(ObjCIvarRefExpr *S) {
584  VisitExpr(S);
585  VisitDecl(S->getDecl());
586  ID.AddBoolean(S->isArrow());
587  ID.AddBoolean(S->isFreeIvar());
588}
589
590void StmtProfiler::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *S) {
591  VisitExpr(S);
592  VisitDecl(S->getProperty());
593}
594
595void StmtProfiler::VisitObjCImplicitSetterGetterRefExpr(
596                                  ObjCImplicitSetterGetterRefExpr *S) {
597  VisitExpr(S);
598  VisitDecl(S->getGetterMethod());
599  VisitDecl(S->getSetterMethod());
600  VisitDecl(S->getInterfaceDecl());
601}
602
603void StmtProfiler::VisitObjCMessageExpr(ObjCMessageExpr *S) {
604  VisitExpr(S);
605  VisitName(S->getSelector());
606  VisitDecl(S->getMethodDecl());
607}
608
609void StmtProfiler::VisitObjCSuperExpr(ObjCSuperExpr *S) {
610  VisitExpr(S);
611}
612
613void StmtProfiler::VisitObjCIsaExpr(ObjCIsaExpr *S) {
614  VisitExpr(S);
615  ID.AddBoolean(S->isArrow());
616}
617
618void StmtProfiler::VisitDecl(Decl *D) {
619  ID.AddInteger(D? D->getKind() : 0);
620
621  if (Canonical && D) {
622    if (NonTypeTemplateParmDecl *NTTP = dyn_cast<NonTypeTemplateParmDecl>(D)) {
623      ID.AddInteger(NTTP->getDepth());
624      ID.AddInteger(NTTP->getIndex());
625      VisitType(NTTP->getType());
626      return;
627    }
628
629    if (ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) {
630      // The Itanium C++ ABI uses the type of a parameter when mangling
631      // expressions that involve function parameters, so we will use the
632      // parameter's type for establishing function parameter identity. That
633      // way, our definition of "equivalent" (per C++ [temp.over.link])
634      // matches the definition of "equivalent" used for name mangling.
635      VisitType(Parm->getType());
636      return;
637    }
638
639    if (TemplateTemplateParmDecl *TTP = dyn_cast<TemplateTemplateParmDecl>(D)) {
640      ID.AddInteger(TTP->getDepth());
641      ID.AddInteger(TTP->getIndex());
642      return;
643    }
644
645    if (OverloadedFunctionDecl *Ovl = dyn_cast<OverloadedFunctionDecl>(D)) {
646      // The Itanium C++ ABI mangles references to a set of overloaded
647      // functions using just the function name, so we do the same here.
648      VisitName(Ovl->getDeclName());
649      return;
650    }
651  }
652
653  ID.AddPointer(D? D->getCanonicalDecl() : 0);
654}
655
656void StmtProfiler::VisitType(QualType T) {
657  if (Canonical)
658    T = Context.getCanonicalType(T);
659
660  ID.AddPointer(T.getAsOpaquePtr());
661}
662
663void StmtProfiler::VisitName(DeclarationName Name) {
664  ID.AddPointer(Name.getAsOpaquePtr());
665}
666
667void StmtProfiler::VisitNestedNameSpecifier(NestedNameSpecifier *NNS) {
668  if (Canonical)
669    NNS = Context.getCanonicalNestedNameSpecifier(NNS);
670  ID.AddPointer(NNS);
671}
672
673void StmtProfiler::VisitTemplateName(TemplateName Name) {
674  if (Canonical)
675    Name = Context.getCanonicalTemplateName(Name);
676
677  Name.Profile(ID);
678}
679
680void StmtProfiler::VisitTemplateArguments(const TemplateArgument *Args,
681                                          unsigned NumArgs) {
682  ID.AddInteger(NumArgs);
683  for (unsigned I = 0; I != NumArgs; ++I) {
684    const TemplateArgument &Arg = Args[I];
685
686    // Mostly repetitive with TemplateArgument::Profile!
687    ID.AddInteger(Arg.getKind());
688    switch (Arg.getKind()) {
689      case TemplateArgument::Null:
690        break;
691
692      case TemplateArgument::Type:
693        VisitType(Arg.getAsType());
694        break;
695
696      case TemplateArgument::Declaration:
697        VisitDecl(Arg.getAsDecl());
698        break;
699
700      case TemplateArgument::Integral:
701        Arg.getAsIntegral()->Profile(ID);
702        VisitType(Arg.getIntegralType());
703        break;
704
705      case TemplateArgument::Expression:
706        Visit(Arg.getAsExpr());
707        break;
708
709      case TemplateArgument::Pack:
710        VisitTemplateArguments(Arg.pack_begin(), Arg.pack_size());
711        break;
712    }
713  }
714}
715
716void Stmt::Profile(llvm::FoldingSetNodeID &ID, ASTContext &Context,
717                   bool Canonical) {
718  StmtProfiler Profiler(ID, Context, Canonical);
719  Profiler.Visit(this);
720}
721