StmtProfile.cpp revision 276479 
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 ConstStmtVisitor<StmtProfiler> {
27    llvm::FoldingSetNodeID &ID;
28    const ASTContext &Context;
29    bool Canonical;
30
31  public:
32    StmtProfiler(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
33                 bool Canonical)
34      : ID(ID), Context(Context), Canonical(Canonical) { }
35
36    void VisitStmt(const Stmt *S);
37
38#define STMT(Node, Base) void Visit##Node(const Node *S);
39#include "clang/AST/StmtNodes.inc"
40
41    /// \brief Visit a declaration that is referenced within an expression
42    /// or statement.
43    void VisitDecl(const 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,
63                                unsigned NumArgs);
64
65    /// \brief Visit a single template argument.
66    void VisitTemplateArgument(const TemplateArgument &Arg);
67  };
68}
69
70void StmtProfiler::VisitStmt(const Stmt *S) {
71  ID.AddInteger(S->getStmtClass());
72  for (Stmt::const_child_range C = S->children(); C; ++C) {
73    if (*C)
74      Visit(*C);
75    else
76      ID.AddInteger(0);
77  }
78}
79
80void StmtProfiler::VisitDeclStmt(const DeclStmt *S) {
81  VisitStmt(S);
82  for (const auto *D : S->decls())
83    VisitDecl(D);
84}
85
86void StmtProfiler::VisitNullStmt(const NullStmt *S) {
87  VisitStmt(S);
88}
89
90void StmtProfiler::VisitCompoundStmt(const CompoundStmt *S) {
91  VisitStmt(S);
92}
93
94void StmtProfiler::VisitSwitchCase(const SwitchCase *S) {
95  VisitStmt(S);
96}
97
98void StmtProfiler::VisitCaseStmt(const CaseStmt *S) {
99  VisitStmt(S);
100}
101
102void StmtProfiler::VisitDefaultStmt(const DefaultStmt *S) {
103  VisitStmt(S);
104}
105
106void StmtProfiler::VisitLabelStmt(const LabelStmt *S) {
107  VisitStmt(S);
108  VisitDecl(S->getDecl());
109}
110
111void StmtProfiler::VisitAttributedStmt(const AttributedStmt *S) {
112  VisitStmt(S);
113  // TODO: maybe visit attributes?
114}
115
116void StmtProfiler::VisitIfStmt(const IfStmt *S) {
117  VisitStmt(S);
118  VisitDecl(S->getConditionVariable());
119}
120
121void StmtProfiler::VisitSwitchStmt(const SwitchStmt *S) {
122  VisitStmt(S);
123  VisitDecl(S->getConditionVariable());
124}
125
126void StmtProfiler::VisitWhileStmt(const WhileStmt *S) {
127  VisitStmt(S);
128  VisitDecl(S->getConditionVariable());
129}
130
131void StmtProfiler::VisitDoStmt(const DoStmt *S) {
132  VisitStmt(S);
133}
134
135void StmtProfiler::VisitForStmt(const ForStmt *S) {
136  VisitStmt(S);
137}
138
139void StmtProfiler::VisitGotoStmt(const GotoStmt *S) {
140  VisitStmt(S);
141  VisitDecl(S->getLabel());
142}
143
144void StmtProfiler::VisitIndirectGotoStmt(const IndirectGotoStmt *S) {
145  VisitStmt(S);
146}
147
148void StmtProfiler::VisitContinueStmt(const ContinueStmt *S) {
149  VisitStmt(S);
150}
151
152void StmtProfiler::VisitBreakStmt(const BreakStmt *S) {
153  VisitStmt(S);
154}
155
156void StmtProfiler::VisitReturnStmt(const ReturnStmt *S) {
157  VisitStmt(S);
158}
159
160void StmtProfiler::VisitGCCAsmStmt(const GCCAsmStmt *S) {
161  VisitStmt(S);
162  ID.AddBoolean(S->isVolatile());
163  ID.AddBoolean(S->isSimple());
164  VisitStringLiteral(S->getAsmString());
165  ID.AddInteger(S->getNumOutputs());
166  for (unsigned I = 0, N = S->getNumOutputs(); I != N; ++I) {
167    ID.AddString(S->getOutputName(I));
168    VisitStringLiteral(S->getOutputConstraintLiteral(I));
169  }
170  ID.AddInteger(S->getNumInputs());
171  for (unsigned I = 0, N = S->getNumInputs(); I != N; ++I) {
172    ID.AddString(S->getInputName(I));
173    VisitStringLiteral(S->getInputConstraintLiteral(I));
174  }
175  ID.AddInteger(S->getNumClobbers());
176  for (unsigned I = 0, N = S->getNumClobbers(); I != N; ++I)
177    VisitStringLiteral(S->getClobberStringLiteral(I));
178}
179
180void StmtProfiler::VisitMSAsmStmt(const MSAsmStmt *S) {
181  // FIXME: Implement MS style inline asm statement profiler.
182  VisitStmt(S);
183}
184
185void StmtProfiler::VisitCXXCatchStmt(const CXXCatchStmt *S) {
186  VisitStmt(S);
187  VisitType(S->getCaughtType());
188}
189
190void StmtProfiler::VisitCXXTryStmt(const CXXTryStmt *S) {
191  VisitStmt(S);
192}
193
194void StmtProfiler::VisitCXXForRangeStmt(const CXXForRangeStmt *S) {
195  VisitStmt(S);
196}
197
198void StmtProfiler::VisitMSDependentExistsStmt(const MSDependentExistsStmt *S) {
199  VisitStmt(S);
200  ID.AddBoolean(S->isIfExists());
201  VisitNestedNameSpecifier(S->getQualifierLoc().getNestedNameSpecifier());
202  VisitName(S->getNameInfo().getName());
203}
204
205void StmtProfiler::VisitSEHTryStmt(const SEHTryStmt *S) {
206  VisitStmt(S);
207}
208
209void StmtProfiler::VisitSEHFinallyStmt(const SEHFinallyStmt *S) {
210  VisitStmt(S);
211}
212
213void StmtProfiler::VisitSEHExceptStmt(const SEHExceptStmt *S) {
214  VisitStmt(S);
215}
216
217void StmtProfiler::VisitSEHLeaveStmt(const SEHLeaveStmt *S) {
218  VisitStmt(S);
219}
220
221void StmtProfiler::VisitCapturedStmt(const CapturedStmt *S) {
222  VisitStmt(S);
223}
224
225void StmtProfiler::VisitObjCForCollectionStmt(const ObjCForCollectionStmt *S) {
226  VisitStmt(S);
227}
228
229void StmtProfiler::VisitObjCAtCatchStmt(const ObjCAtCatchStmt *S) {
230  VisitStmt(S);
231  ID.AddBoolean(S->hasEllipsis());
232  if (S->getCatchParamDecl())
233    VisitType(S->getCatchParamDecl()->getType());
234}
235
236void StmtProfiler::VisitObjCAtFinallyStmt(const ObjCAtFinallyStmt *S) {
237  VisitStmt(S);
238}
239
240void StmtProfiler::VisitObjCAtTryStmt(const ObjCAtTryStmt *S) {
241  VisitStmt(S);
242}
243
244void
245StmtProfiler::VisitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt *S) {
246  VisitStmt(S);
247}
248
249void StmtProfiler::VisitObjCAtThrowStmt(const ObjCAtThrowStmt *S) {
250  VisitStmt(S);
251}
252
253void
254StmtProfiler::VisitObjCAutoreleasePoolStmt(const ObjCAutoreleasePoolStmt *S) {
255  VisitStmt(S);
256}
257
258namespace {
259class OMPClauseProfiler : public ConstOMPClauseVisitor<OMPClauseProfiler> {
260  StmtProfiler *Profiler;
261  /// \brief Process clauses with list of variables.
262  template <typename T>
263  void VisitOMPClauseList(T *Node);
264public:
265  OMPClauseProfiler(StmtProfiler *P) : Profiler(P) { }
266#define OPENMP_CLAUSE(Name, Class)                                             \
267  void Visit##Class(const Class *C);
268#include "clang/Basic/OpenMPKinds.def"
269};
270
271void OMPClauseProfiler::VisitOMPIfClause(const OMPIfClause *C) {
272  if (C->getCondition())
273    Profiler->VisitStmt(C->getCondition());
274}
275
276void OMPClauseProfiler::VisitOMPFinalClause(const OMPFinalClause *C) {
277  if (C->getCondition())
278    Profiler->VisitStmt(C->getCondition());
279}
280
281void OMPClauseProfiler::VisitOMPNumThreadsClause(const OMPNumThreadsClause *C) {
282  if (C->getNumThreads())
283    Profiler->VisitStmt(C->getNumThreads());
284}
285
286void OMPClauseProfiler::VisitOMPSafelenClause(const OMPSafelenClause *C) {
287  if (C->getSafelen())
288    Profiler->VisitStmt(C->getSafelen());
289}
290
291void OMPClauseProfiler::VisitOMPCollapseClause(const OMPCollapseClause *C) {
292  if (C->getNumForLoops())
293    Profiler->VisitStmt(C->getNumForLoops());
294}
295
296void OMPClauseProfiler::VisitOMPDefaultClause(const OMPDefaultClause *C) { }
297
298void OMPClauseProfiler::VisitOMPProcBindClause(const OMPProcBindClause *C) { }
299
300void OMPClauseProfiler::VisitOMPScheduleClause(const OMPScheduleClause *C) {
301  if (C->getChunkSize())
302    Profiler->VisitStmt(C->getChunkSize());
303}
304
305void OMPClauseProfiler::VisitOMPOrderedClause(const OMPOrderedClause *) {}
306
307void OMPClauseProfiler::VisitOMPNowaitClause(const OMPNowaitClause *) {}
308
309void OMPClauseProfiler::VisitOMPUntiedClause(const OMPUntiedClause *) {}
310
311void OMPClauseProfiler::VisitOMPMergeableClause(const OMPMergeableClause *) {}
312
313template<typename T>
314void OMPClauseProfiler::VisitOMPClauseList(T *Node) {
315  for (auto *I : Node->varlists())
316    Profiler->VisitStmt(I);
317}
318
319void OMPClauseProfiler::VisitOMPPrivateClause(const OMPPrivateClause *C) {
320  VisitOMPClauseList(C);
321}
322void OMPClauseProfiler::VisitOMPFirstprivateClause(
323                                         const OMPFirstprivateClause *C) {
324  VisitOMPClauseList(C);
325}
326void
327OMPClauseProfiler::VisitOMPLastprivateClause(const OMPLastprivateClause *C) {
328  VisitOMPClauseList(C);
329}
330void OMPClauseProfiler::VisitOMPSharedClause(const OMPSharedClause *C) {
331  VisitOMPClauseList(C);
332}
333void OMPClauseProfiler::VisitOMPReductionClause(
334                                         const OMPReductionClause *C) {
335  Profiler->VisitNestedNameSpecifier(
336      C->getQualifierLoc().getNestedNameSpecifier());
337  Profiler->VisitName(C->getNameInfo().getName());
338  VisitOMPClauseList(C);
339}
340void OMPClauseProfiler::VisitOMPLinearClause(const OMPLinearClause *C) {
341  VisitOMPClauseList(C);
342  Profiler->VisitStmt(C->getStep());
343}
344void OMPClauseProfiler::VisitOMPAlignedClause(const OMPAlignedClause *C) {
345  VisitOMPClauseList(C);
346  Profiler->VisitStmt(C->getAlignment());
347}
348void OMPClauseProfiler::VisitOMPCopyinClause(const OMPCopyinClause *C) {
349  VisitOMPClauseList(C);
350}
351void
352OMPClauseProfiler::VisitOMPCopyprivateClause(const OMPCopyprivateClause *C) {
353  VisitOMPClauseList(C);
354}
355void OMPClauseProfiler::VisitOMPFlushClause(const OMPFlushClause *C) {
356  VisitOMPClauseList(C);
357}
358}
359
360void
361StmtProfiler::VisitOMPExecutableDirective(const OMPExecutableDirective *S) {
362  VisitStmt(S);
363  OMPClauseProfiler P(this);
364  ArrayRef<OMPClause *> Clauses = S->clauses();
365  for (ArrayRef<OMPClause *>::iterator I = Clauses.begin(), E = Clauses.end();
366       I != E; ++I)
367    if (*I)
368      P.Visit(*I);
369}
370
371void StmtProfiler::VisitOMPParallelDirective(const OMPParallelDirective *S) {
372  VisitOMPExecutableDirective(S);
373}
374
375void StmtProfiler::VisitOMPSimdDirective(const OMPSimdDirective *S) {
376  VisitOMPExecutableDirective(S);
377}
378
379void StmtProfiler::VisitOMPForDirective(const OMPForDirective *S) {
380  VisitOMPExecutableDirective(S);
381}
382
383void StmtProfiler::VisitOMPSectionsDirective(const OMPSectionsDirective *S) {
384  VisitOMPExecutableDirective(S);
385}
386
387void StmtProfiler::VisitOMPSectionDirective(const OMPSectionDirective *S) {
388  VisitOMPExecutableDirective(S);
389}
390
391void StmtProfiler::VisitOMPSingleDirective(const OMPSingleDirective *S) {
392  VisitOMPExecutableDirective(S);
393}
394
395void StmtProfiler::VisitOMPMasterDirective(const OMPMasterDirective *S) {
396  VisitOMPExecutableDirective(S);
397}
398
399void StmtProfiler::VisitOMPCriticalDirective(const OMPCriticalDirective *S) {
400  VisitOMPExecutableDirective(S);
401  VisitName(S->getDirectiveName().getName());
402}
403
404void
405StmtProfiler::VisitOMPParallelForDirective(const OMPParallelForDirective *S) {
406  VisitOMPExecutableDirective(S);
407}
408
409void StmtProfiler::VisitOMPParallelSectionsDirective(
410    const OMPParallelSectionsDirective *S) {
411  VisitOMPExecutableDirective(S);
412}
413
414void StmtProfiler::VisitOMPTaskDirective(const OMPTaskDirective *S) {
415  VisitOMPExecutableDirective(S);
416}
417
418void StmtProfiler::VisitOMPTaskyieldDirective(const OMPTaskyieldDirective *S) {
419  VisitOMPExecutableDirective(S);
420}
421
422void StmtProfiler::VisitOMPBarrierDirective(const OMPBarrierDirective *S) {
423  VisitOMPExecutableDirective(S);
424}
425
426void StmtProfiler::VisitOMPTaskwaitDirective(const OMPTaskwaitDirective *S) {
427  VisitOMPExecutableDirective(S);
428}
429
430void StmtProfiler::VisitOMPFlushDirective(const OMPFlushDirective *S) {
431  VisitOMPExecutableDirective(S);
432}
433
434void StmtProfiler::VisitExpr(const Expr *S) {
435  VisitStmt(S);
436}
437
438void StmtProfiler::VisitDeclRefExpr(const DeclRefExpr *S) {
439  VisitExpr(S);
440  if (!Canonical)
441    VisitNestedNameSpecifier(S->getQualifier());
442  VisitDecl(S->getDecl());
443  if (!Canonical)
444    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
445}
446
447void StmtProfiler::VisitPredefinedExpr(const PredefinedExpr *S) {
448  VisitExpr(S);
449  ID.AddInteger(S->getIdentType());
450}
451
452void StmtProfiler::VisitIntegerLiteral(const IntegerLiteral *S) {
453  VisitExpr(S);
454  S->getValue().Profile(ID);
455}
456
457void StmtProfiler::VisitCharacterLiteral(const CharacterLiteral *S) {
458  VisitExpr(S);
459  ID.AddInteger(S->getKind());
460  ID.AddInteger(S->getValue());
461}
462
463void StmtProfiler::VisitFloatingLiteral(const FloatingLiteral *S) {
464  VisitExpr(S);
465  S->getValue().Profile(ID);
466  ID.AddBoolean(S->isExact());
467}
468
469void StmtProfiler::VisitImaginaryLiteral(const ImaginaryLiteral *S) {
470  VisitExpr(S);
471}
472
473void StmtProfiler::VisitStringLiteral(const StringLiteral *S) {
474  VisitExpr(S);
475  ID.AddString(S->getBytes());
476  ID.AddInteger(S->getKind());
477}
478
479void StmtProfiler::VisitParenExpr(const ParenExpr *S) {
480  VisitExpr(S);
481}
482
483void StmtProfiler::VisitParenListExpr(const ParenListExpr *S) {
484  VisitExpr(S);
485}
486
487void StmtProfiler::VisitUnaryOperator(const UnaryOperator *S) {
488  VisitExpr(S);
489  ID.AddInteger(S->getOpcode());
490}
491
492void StmtProfiler::VisitOffsetOfExpr(const OffsetOfExpr *S) {
493  VisitType(S->getTypeSourceInfo()->getType());
494  unsigned n = S->getNumComponents();
495  for (unsigned i = 0; i < n; ++i) {
496    const OffsetOfExpr::OffsetOfNode& ON = S->getComponent(i);
497    ID.AddInteger(ON.getKind());
498    switch (ON.getKind()) {
499    case OffsetOfExpr::OffsetOfNode::Array:
500      // Expressions handled below.
501      break;
502
503    case OffsetOfExpr::OffsetOfNode::Field:
504      VisitDecl(ON.getField());
505      break;
506
507    case OffsetOfExpr::OffsetOfNode::Identifier:
508      ID.AddPointer(ON.getFieldName());
509      break;
510
511    case OffsetOfExpr::OffsetOfNode::Base:
512      // These nodes are implicit, and therefore don't need profiling.
513      break;
514    }
515  }
516
517  VisitExpr(S);
518}
519
520void
521StmtProfiler::VisitUnaryExprOrTypeTraitExpr(const UnaryExprOrTypeTraitExpr *S) {
522  VisitExpr(S);
523  ID.AddInteger(S->getKind());
524  if (S->isArgumentType())
525    VisitType(S->getArgumentType());
526}
527
528void StmtProfiler::VisitArraySubscriptExpr(const ArraySubscriptExpr *S) {
529  VisitExpr(S);
530}
531
532void StmtProfiler::VisitCallExpr(const CallExpr *S) {
533  VisitExpr(S);
534}
535
536void StmtProfiler::VisitMemberExpr(const MemberExpr *S) {
537  VisitExpr(S);
538  VisitDecl(S->getMemberDecl());
539  if (!Canonical)
540    VisitNestedNameSpecifier(S->getQualifier());
541  ID.AddBoolean(S->isArrow());
542}
543
544void StmtProfiler::VisitCompoundLiteralExpr(const CompoundLiteralExpr *S) {
545  VisitExpr(S);
546  ID.AddBoolean(S->isFileScope());
547}
548
549void StmtProfiler::VisitCastExpr(const CastExpr *S) {
550  VisitExpr(S);
551}
552
553void StmtProfiler::VisitImplicitCastExpr(const ImplicitCastExpr *S) {
554  VisitCastExpr(S);
555  ID.AddInteger(S->getValueKind());
556}
557
558void StmtProfiler::VisitExplicitCastExpr(const ExplicitCastExpr *S) {
559  VisitCastExpr(S);
560  VisitType(S->getTypeAsWritten());
561}
562
563void StmtProfiler::VisitCStyleCastExpr(const CStyleCastExpr *S) {
564  VisitExplicitCastExpr(S);
565}
566
567void StmtProfiler::VisitBinaryOperator(const BinaryOperator *S) {
568  VisitExpr(S);
569  ID.AddInteger(S->getOpcode());
570}
571
572void
573StmtProfiler::VisitCompoundAssignOperator(const CompoundAssignOperator *S) {
574  VisitBinaryOperator(S);
575}
576
577void StmtProfiler::VisitConditionalOperator(const ConditionalOperator *S) {
578  VisitExpr(S);
579}
580
581void StmtProfiler::VisitBinaryConditionalOperator(
582    const BinaryConditionalOperator *S) {
583  VisitExpr(S);
584}
585
586void StmtProfiler::VisitAddrLabelExpr(const AddrLabelExpr *S) {
587  VisitExpr(S);
588  VisitDecl(S->getLabel());
589}
590
591void StmtProfiler::VisitStmtExpr(const StmtExpr *S) {
592  VisitExpr(S);
593}
594
595void StmtProfiler::VisitShuffleVectorExpr(const ShuffleVectorExpr *S) {
596  VisitExpr(S);
597}
598
599void StmtProfiler::VisitConvertVectorExpr(const ConvertVectorExpr *S) {
600  VisitExpr(S);
601}
602
603void StmtProfiler::VisitChooseExpr(const ChooseExpr *S) {
604  VisitExpr(S);
605}
606
607void StmtProfiler::VisitGNUNullExpr(const GNUNullExpr *S) {
608  VisitExpr(S);
609}
610
611void StmtProfiler::VisitVAArgExpr(const VAArgExpr *S) {
612  VisitExpr(S);
613}
614
615void StmtProfiler::VisitInitListExpr(const InitListExpr *S) {
616  if (S->getSyntacticForm()) {
617    VisitInitListExpr(S->getSyntacticForm());
618    return;
619  }
620
621  VisitExpr(S);
622}
623
624void StmtProfiler::VisitDesignatedInitExpr(const DesignatedInitExpr *S) {
625  VisitExpr(S);
626  ID.AddBoolean(S->usesGNUSyntax());
627  for (DesignatedInitExpr::const_designators_iterator D =
628         S->designators_begin(), DEnd = S->designators_end();
629       D != DEnd; ++D) {
630    if (D->isFieldDesignator()) {
631      ID.AddInteger(0);
632      VisitName(D->getFieldName());
633      continue;
634    }
635
636    if (D->isArrayDesignator()) {
637      ID.AddInteger(1);
638    } else {
639      assert(D->isArrayRangeDesignator());
640      ID.AddInteger(2);
641    }
642    ID.AddInteger(D->getFirstExprIndex());
643  }
644}
645
646void StmtProfiler::VisitImplicitValueInitExpr(const ImplicitValueInitExpr *S) {
647  VisitExpr(S);
648}
649
650void StmtProfiler::VisitExtVectorElementExpr(const ExtVectorElementExpr *S) {
651  VisitExpr(S);
652  VisitName(&S->getAccessor());
653}
654
655void StmtProfiler::VisitBlockExpr(const BlockExpr *S) {
656  VisitExpr(S);
657  VisitDecl(S->getBlockDecl());
658}
659
660void StmtProfiler::VisitGenericSelectionExpr(const GenericSelectionExpr *S) {
661  VisitExpr(S);
662  for (unsigned i = 0; i != S->getNumAssocs(); ++i) {
663    QualType T = S->getAssocType(i);
664    if (T.isNull())
665      ID.AddPointer(nullptr);
666    else
667      VisitType(T);
668    VisitExpr(S->getAssocExpr(i));
669  }
670}
671
672void StmtProfiler::VisitPseudoObjectExpr(const PseudoObjectExpr *S) {
673  VisitExpr(S);
674  for (PseudoObjectExpr::const_semantics_iterator
675         i = S->semantics_begin(), e = S->semantics_end(); i != e; ++i)
676    // Normally, we would not profile the source expressions of OVEs.
677    if (const OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(*i))
678      Visit(OVE->getSourceExpr());
679}
680
681void StmtProfiler::VisitAtomicExpr(const AtomicExpr *S) {
682  VisitExpr(S);
683  ID.AddInteger(S->getOp());
684}
685
686static Stmt::StmtClass DecodeOperatorCall(const CXXOperatorCallExpr *S,
687                                          UnaryOperatorKind &UnaryOp,
688                                          BinaryOperatorKind &BinaryOp) {
689  switch (S->getOperator()) {
690  case OO_None:
691  case OO_New:
692  case OO_Delete:
693  case OO_Array_New:
694  case OO_Array_Delete:
695  case OO_Arrow:
696  case OO_Call:
697  case OO_Conditional:
698  case NUM_OVERLOADED_OPERATORS:
699    llvm_unreachable("Invalid operator call kind");
700
701  case OO_Plus:
702    if (S->getNumArgs() == 1) {
703      UnaryOp = UO_Plus;
704      return Stmt::UnaryOperatorClass;
705    }
706
707    BinaryOp = BO_Add;
708    return Stmt::BinaryOperatorClass;
709
710  case OO_Minus:
711    if (S->getNumArgs() == 1) {
712      UnaryOp = UO_Minus;
713      return Stmt::UnaryOperatorClass;
714    }
715
716    BinaryOp = BO_Sub;
717    return Stmt::BinaryOperatorClass;
718
719  case OO_Star:
720    if (S->getNumArgs() == 1) {
721      UnaryOp = UO_Deref;
722      return Stmt::UnaryOperatorClass;
723    }
724
725    BinaryOp = BO_Mul;
726    return Stmt::BinaryOperatorClass;
727
728  case OO_Slash:
729    BinaryOp = BO_Div;
730    return Stmt::BinaryOperatorClass;
731
732  case OO_Percent:
733    BinaryOp = BO_Rem;
734    return Stmt::BinaryOperatorClass;
735
736  case OO_Caret:
737    BinaryOp = BO_Xor;
738    return Stmt::BinaryOperatorClass;
739
740  case OO_Amp:
741    if (S->getNumArgs() == 1) {
742      UnaryOp = UO_AddrOf;
743      return Stmt::UnaryOperatorClass;
744    }
745
746    BinaryOp = BO_And;
747    return Stmt::BinaryOperatorClass;
748
749  case OO_Pipe:
750    BinaryOp = BO_Or;
751    return Stmt::BinaryOperatorClass;
752
753  case OO_Tilde:
754    UnaryOp = UO_Not;
755    return Stmt::UnaryOperatorClass;
756
757  case OO_Exclaim:
758    UnaryOp = UO_LNot;
759    return Stmt::UnaryOperatorClass;
760
761  case OO_Equal:
762    BinaryOp = BO_Assign;
763    return Stmt::BinaryOperatorClass;
764
765  case OO_Less:
766    BinaryOp = BO_LT;
767    return Stmt::BinaryOperatorClass;
768
769  case OO_Greater:
770    BinaryOp = BO_GT;
771    return Stmt::BinaryOperatorClass;
772
773  case OO_PlusEqual:
774    BinaryOp = BO_AddAssign;
775    return Stmt::CompoundAssignOperatorClass;
776
777  case OO_MinusEqual:
778    BinaryOp = BO_SubAssign;
779    return Stmt::CompoundAssignOperatorClass;
780
781  case OO_StarEqual:
782    BinaryOp = BO_MulAssign;
783    return Stmt::CompoundAssignOperatorClass;
784
785  case OO_SlashEqual:
786    BinaryOp = BO_DivAssign;
787    return Stmt::CompoundAssignOperatorClass;
788
789  case OO_PercentEqual:
790    BinaryOp = BO_RemAssign;
791    return Stmt::CompoundAssignOperatorClass;
792
793  case OO_CaretEqual:
794    BinaryOp = BO_XorAssign;
795    return Stmt::CompoundAssignOperatorClass;
796
797  case OO_AmpEqual:
798    BinaryOp = BO_AndAssign;
799    return Stmt::CompoundAssignOperatorClass;
800
801  case OO_PipeEqual:
802    BinaryOp = BO_OrAssign;
803    return Stmt::CompoundAssignOperatorClass;
804
805  case OO_LessLess:
806    BinaryOp = BO_Shl;
807    return Stmt::BinaryOperatorClass;
808
809  case OO_GreaterGreater:
810    BinaryOp = BO_Shr;
811    return Stmt::BinaryOperatorClass;
812
813  case OO_LessLessEqual:
814    BinaryOp = BO_ShlAssign;
815    return Stmt::CompoundAssignOperatorClass;
816
817  case OO_GreaterGreaterEqual:
818    BinaryOp = BO_ShrAssign;
819    return Stmt::CompoundAssignOperatorClass;
820
821  case OO_EqualEqual:
822    BinaryOp = BO_EQ;
823    return Stmt::BinaryOperatorClass;
824
825  case OO_ExclaimEqual:
826    BinaryOp = BO_NE;
827    return Stmt::BinaryOperatorClass;
828
829  case OO_LessEqual:
830    BinaryOp = BO_LE;
831    return Stmt::BinaryOperatorClass;
832
833  case OO_GreaterEqual:
834    BinaryOp = BO_GE;
835    return Stmt::BinaryOperatorClass;
836
837  case OO_AmpAmp:
838    BinaryOp = BO_LAnd;
839    return Stmt::BinaryOperatorClass;
840
841  case OO_PipePipe:
842    BinaryOp = BO_LOr;
843    return Stmt::BinaryOperatorClass;
844
845  case OO_PlusPlus:
846    UnaryOp = S->getNumArgs() == 1? UO_PreInc
847                                  : UO_PostInc;
848    return Stmt::UnaryOperatorClass;
849
850  case OO_MinusMinus:
851    UnaryOp = S->getNumArgs() == 1? UO_PreDec
852                                  : UO_PostDec;
853    return Stmt::UnaryOperatorClass;
854
855  case OO_Comma:
856    BinaryOp = BO_Comma;
857    return Stmt::BinaryOperatorClass;
858
859
860  case OO_ArrowStar:
861    BinaryOp = BO_PtrMemI;
862    return Stmt::BinaryOperatorClass;
863
864  case OO_Subscript:
865    return Stmt::ArraySubscriptExprClass;
866  }
867
868  llvm_unreachable("Invalid overloaded operator expression");
869}
870
871
872void StmtProfiler::VisitCXXOperatorCallExpr(const CXXOperatorCallExpr *S) {
873  if (S->isTypeDependent()) {
874    // Type-dependent operator calls are profiled like their underlying
875    // syntactic operator.
876    UnaryOperatorKind UnaryOp = UO_Extension;
877    BinaryOperatorKind BinaryOp = BO_Comma;
878    Stmt::StmtClass SC = DecodeOperatorCall(S, UnaryOp, BinaryOp);
879
880    ID.AddInteger(SC);
881    for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
882      Visit(S->getArg(I));
883    if (SC == Stmt::UnaryOperatorClass)
884      ID.AddInteger(UnaryOp);
885    else if (SC == Stmt::BinaryOperatorClass ||
886             SC == Stmt::CompoundAssignOperatorClass)
887      ID.AddInteger(BinaryOp);
888    else
889      assert(SC == Stmt::ArraySubscriptExprClass);
890
891    return;
892  }
893
894  VisitCallExpr(S);
895  ID.AddInteger(S->getOperator());
896}
897
898void StmtProfiler::VisitCXXMemberCallExpr(const CXXMemberCallExpr *S) {
899  VisitCallExpr(S);
900}
901
902void StmtProfiler::VisitCUDAKernelCallExpr(const CUDAKernelCallExpr *S) {
903  VisitCallExpr(S);
904}
905
906void StmtProfiler::VisitAsTypeExpr(const AsTypeExpr *S) {
907  VisitExpr(S);
908}
909
910void StmtProfiler::VisitCXXNamedCastExpr(const CXXNamedCastExpr *S) {
911  VisitExplicitCastExpr(S);
912}
913
914void StmtProfiler::VisitCXXStaticCastExpr(const CXXStaticCastExpr *S) {
915  VisitCXXNamedCastExpr(S);
916}
917
918void StmtProfiler::VisitCXXDynamicCastExpr(const CXXDynamicCastExpr *S) {
919  VisitCXXNamedCastExpr(S);
920}
921
922void
923StmtProfiler::VisitCXXReinterpretCastExpr(const CXXReinterpretCastExpr *S) {
924  VisitCXXNamedCastExpr(S);
925}
926
927void StmtProfiler::VisitCXXConstCastExpr(const CXXConstCastExpr *S) {
928  VisitCXXNamedCastExpr(S);
929}
930
931void StmtProfiler::VisitUserDefinedLiteral(const UserDefinedLiteral *S) {
932  VisitCallExpr(S);
933}
934
935void StmtProfiler::VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *S) {
936  VisitExpr(S);
937  ID.AddBoolean(S->getValue());
938}
939
940void StmtProfiler::VisitCXXNullPtrLiteralExpr(const CXXNullPtrLiteralExpr *S) {
941  VisitExpr(S);
942}
943
944void StmtProfiler::VisitCXXStdInitializerListExpr(
945    const CXXStdInitializerListExpr *S) {
946  VisitExpr(S);
947}
948
949void StmtProfiler::VisitCXXTypeidExpr(const CXXTypeidExpr *S) {
950  VisitExpr(S);
951  if (S->isTypeOperand())
952    VisitType(S->getTypeOperandSourceInfo()->getType());
953}
954
955void StmtProfiler::VisitCXXUuidofExpr(const CXXUuidofExpr *S) {
956  VisitExpr(S);
957  if (S->isTypeOperand())
958    VisitType(S->getTypeOperandSourceInfo()->getType());
959}
960
961void StmtProfiler::VisitMSPropertyRefExpr(const MSPropertyRefExpr *S) {
962  VisitExpr(S);
963  VisitDecl(S->getPropertyDecl());
964}
965
966void StmtProfiler::VisitCXXThisExpr(const CXXThisExpr *S) {
967  VisitExpr(S);
968  ID.AddBoolean(S->isImplicit());
969}
970
971void StmtProfiler::VisitCXXThrowExpr(const CXXThrowExpr *S) {
972  VisitExpr(S);
973}
974
975void StmtProfiler::VisitCXXDefaultArgExpr(const CXXDefaultArgExpr *S) {
976  VisitExpr(S);
977  VisitDecl(S->getParam());
978}
979
980void StmtProfiler::VisitCXXDefaultInitExpr(const CXXDefaultInitExpr *S) {
981  VisitExpr(S);
982  VisitDecl(S->getField());
983}
984
985void StmtProfiler::VisitCXXBindTemporaryExpr(const CXXBindTemporaryExpr *S) {
986  VisitExpr(S);
987  VisitDecl(
988         const_cast<CXXDestructorDecl *>(S->getTemporary()->getDestructor()));
989}
990
991void StmtProfiler::VisitCXXConstructExpr(const CXXConstructExpr *S) {
992  VisitExpr(S);
993  VisitDecl(S->getConstructor());
994  ID.AddBoolean(S->isElidable());
995}
996
997void StmtProfiler::VisitCXXFunctionalCastExpr(const CXXFunctionalCastExpr *S) {
998  VisitExplicitCastExpr(S);
999}
1000
1001void
1002StmtProfiler::VisitCXXTemporaryObjectExpr(const CXXTemporaryObjectExpr *S) {
1003  VisitCXXConstructExpr(S);
1004}
1005
1006void
1007StmtProfiler::VisitLambdaExpr(const LambdaExpr *S) {
1008  VisitExpr(S);
1009  for (LambdaExpr::capture_iterator C = S->explicit_capture_begin(),
1010                                 CEnd = S->explicit_capture_end();
1011       C != CEnd; ++C) {
1012    ID.AddInteger(C->getCaptureKind());
1013    switch (C->getCaptureKind()) {
1014    case LCK_This:
1015      break;
1016    case LCK_ByRef:
1017    case LCK_ByCopy:
1018      VisitDecl(C->getCapturedVar());
1019      ID.AddBoolean(C->isPackExpansion());
1020      break;
1021    }
1022  }
1023  // Note: If we actually needed to be able to match lambda
1024  // expressions, we would have to consider parameters and return type
1025  // here, among other things.
1026  VisitStmt(S->getBody());
1027}
1028
1029void
1030StmtProfiler::VisitCXXScalarValueInitExpr(const CXXScalarValueInitExpr *S) {
1031  VisitExpr(S);
1032}
1033
1034void StmtProfiler::VisitCXXDeleteExpr(const CXXDeleteExpr *S) {
1035  VisitExpr(S);
1036  ID.AddBoolean(S->isGlobalDelete());
1037  ID.AddBoolean(S->isArrayForm());
1038  VisitDecl(S->getOperatorDelete());
1039}
1040
1041
1042void StmtProfiler::VisitCXXNewExpr(const CXXNewExpr *S) {
1043  VisitExpr(S);
1044  VisitType(S->getAllocatedType());
1045  VisitDecl(S->getOperatorNew());
1046  VisitDecl(S->getOperatorDelete());
1047  ID.AddBoolean(S->isArray());
1048  ID.AddInteger(S->getNumPlacementArgs());
1049  ID.AddBoolean(S->isGlobalNew());
1050  ID.AddBoolean(S->isParenTypeId());
1051  ID.AddInteger(S->getInitializationStyle());
1052}
1053
1054void
1055StmtProfiler::VisitCXXPseudoDestructorExpr(const CXXPseudoDestructorExpr *S) {
1056  VisitExpr(S);
1057  ID.AddBoolean(S->isArrow());
1058  VisitNestedNameSpecifier(S->getQualifier());
1059  ID.AddBoolean(S->getScopeTypeInfo() != nullptr);
1060  if (S->getScopeTypeInfo())
1061    VisitType(S->getScopeTypeInfo()->getType());
1062  ID.AddBoolean(S->getDestroyedTypeInfo() != nullptr);
1063  if (S->getDestroyedTypeInfo())
1064    VisitType(S->getDestroyedType());
1065  else
1066    ID.AddPointer(S->getDestroyedTypeIdentifier());
1067}
1068
1069void StmtProfiler::VisitOverloadExpr(const OverloadExpr *S) {
1070  VisitExpr(S);
1071  VisitNestedNameSpecifier(S->getQualifier());
1072  VisitName(S->getName());
1073  ID.AddBoolean(S->hasExplicitTemplateArgs());
1074  if (S->hasExplicitTemplateArgs())
1075    VisitTemplateArguments(S->getExplicitTemplateArgs().getTemplateArgs(),
1076                           S->getExplicitTemplateArgs().NumTemplateArgs);
1077}
1078
1079void
1080StmtProfiler::VisitUnresolvedLookupExpr(const UnresolvedLookupExpr *S) {
1081  VisitOverloadExpr(S);
1082}
1083
1084void StmtProfiler::VisitTypeTraitExpr(const TypeTraitExpr *S) {
1085  VisitExpr(S);
1086  ID.AddInteger(S->getTrait());
1087  ID.AddInteger(S->getNumArgs());
1088  for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
1089    VisitType(S->getArg(I)->getType());
1090}
1091
1092void StmtProfiler::VisitArrayTypeTraitExpr(const ArrayTypeTraitExpr *S) {
1093  VisitExpr(S);
1094  ID.AddInteger(S->getTrait());
1095  VisitType(S->getQueriedType());
1096}
1097
1098void StmtProfiler::VisitExpressionTraitExpr(const ExpressionTraitExpr *S) {
1099  VisitExpr(S);
1100  ID.AddInteger(S->getTrait());
1101  VisitExpr(S->getQueriedExpression());
1102}
1103
1104void StmtProfiler::VisitDependentScopeDeclRefExpr(
1105    const DependentScopeDeclRefExpr *S) {
1106  VisitExpr(S);
1107  VisitName(S->getDeclName());
1108  VisitNestedNameSpecifier(S->getQualifier());
1109  ID.AddBoolean(S->hasExplicitTemplateArgs());
1110  if (S->hasExplicitTemplateArgs())
1111    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1112}
1113
1114void StmtProfiler::VisitExprWithCleanups(const ExprWithCleanups *S) {
1115  VisitExpr(S);
1116}
1117
1118void StmtProfiler::VisitCXXUnresolvedConstructExpr(
1119    const CXXUnresolvedConstructExpr *S) {
1120  VisitExpr(S);
1121  VisitType(S->getTypeAsWritten());
1122}
1123
1124void StmtProfiler::VisitCXXDependentScopeMemberExpr(
1125    const CXXDependentScopeMemberExpr *S) {
1126  ID.AddBoolean(S->isImplicitAccess());
1127  if (!S->isImplicitAccess()) {
1128    VisitExpr(S);
1129    ID.AddBoolean(S->isArrow());
1130  }
1131  VisitNestedNameSpecifier(S->getQualifier());
1132  VisitName(S->getMember());
1133  ID.AddBoolean(S->hasExplicitTemplateArgs());
1134  if (S->hasExplicitTemplateArgs())
1135    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1136}
1137
1138void StmtProfiler::VisitUnresolvedMemberExpr(const UnresolvedMemberExpr *S) {
1139  ID.AddBoolean(S->isImplicitAccess());
1140  if (!S->isImplicitAccess()) {
1141    VisitExpr(S);
1142    ID.AddBoolean(S->isArrow());
1143  }
1144  VisitNestedNameSpecifier(S->getQualifier());
1145  VisitName(S->getMemberName());
1146  ID.AddBoolean(S->hasExplicitTemplateArgs());
1147  if (S->hasExplicitTemplateArgs())
1148    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1149}
1150
1151void StmtProfiler::VisitCXXNoexceptExpr(const CXXNoexceptExpr *S) {
1152  VisitExpr(S);
1153}
1154
1155void StmtProfiler::VisitPackExpansionExpr(const PackExpansionExpr *S) {
1156  VisitExpr(S);
1157}
1158
1159void StmtProfiler::VisitSizeOfPackExpr(const SizeOfPackExpr *S) {
1160  VisitExpr(S);
1161  VisitDecl(S->getPack());
1162}
1163
1164void StmtProfiler::VisitSubstNonTypeTemplateParmPackExpr(
1165    const SubstNonTypeTemplateParmPackExpr *S) {
1166  VisitExpr(S);
1167  VisitDecl(S->getParameterPack());
1168  VisitTemplateArgument(S->getArgumentPack());
1169}
1170
1171void StmtProfiler::VisitSubstNonTypeTemplateParmExpr(
1172    const SubstNonTypeTemplateParmExpr *E) {
1173  // Profile exactly as the replacement expression.
1174  Visit(E->getReplacement());
1175}
1176
1177void StmtProfiler::VisitFunctionParmPackExpr(const FunctionParmPackExpr *S) {
1178  VisitExpr(S);
1179  VisitDecl(S->getParameterPack());
1180  ID.AddInteger(S->getNumExpansions());
1181  for (FunctionParmPackExpr::iterator I = S->begin(), E = S->end(); I != E; ++I)
1182    VisitDecl(*I);
1183}
1184
1185void StmtProfiler::VisitMaterializeTemporaryExpr(
1186                                           const MaterializeTemporaryExpr *S) {
1187  VisitExpr(S);
1188}
1189
1190void StmtProfiler::VisitOpaqueValueExpr(const OpaqueValueExpr *E) {
1191  VisitExpr(E);
1192}
1193
1194void StmtProfiler::VisitObjCStringLiteral(const ObjCStringLiteral *S) {
1195  VisitExpr(S);
1196}
1197
1198void StmtProfiler::VisitObjCBoxedExpr(const ObjCBoxedExpr *E) {
1199  VisitExpr(E);
1200}
1201
1202void StmtProfiler::VisitObjCArrayLiteral(const ObjCArrayLiteral *E) {
1203  VisitExpr(E);
1204}
1205
1206void StmtProfiler::VisitObjCDictionaryLiteral(const ObjCDictionaryLiteral *E) {
1207  VisitExpr(E);
1208}
1209
1210void StmtProfiler::VisitObjCEncodeExpr(const ObjCEncodeExpr *S) {
1211  VisitExpr(S);
1212  VisitType(S->getEncodedType());
1213}
1214
1215void StmtProfiler::VisitObjCSelectorExpr(const ObjCSelectorExpr *S) {
1216  VisitExpr(S);
1217  VisitName(S->getSelector());
1218}
1219
1220void StmtProfiler::VisitObjCProtocolExpr(const ObjCProtocolExpr *S) {
1221  VisitExpr(S);
1222  VisitDecl(S->getProtocol());
1223}
1224
1225void StmtProfiler::VisitObjCIvarRefExpr(const ObjCIvarRefExpr *S) {
1226  VisitExpr(S);
1227  VisitDecl(S->getDecl());
1228  ID.AddBoolean(S->isArrow());
1229  ID.AddBoolean(S->isFreeIvar());
1230}
1231
1232void StmtProfiler::VisitObjCPropertyRefExpr(const ObjCPropertyRefExpr *S) {
1233  VisitExpr(S);
1234  if (S->isImplicitProperty()) {
1235    VisitDecl(S->getImplicitPropertyGetter());
1236    VisitDecl(S->getImplicitPropertySetter());
1237  } else {
1238    VisitDecl(S->getExplicitProperty());
1239  }
1240  if (S->isSuperReceiver()) {
1241    ID.AddBoolean(S->isSuperReceiver());
1242    VisitType(S->getSuperReceiverType());
1243  }
1244}
1245
1246void StmtProfiler::VisitObjCSubscriptRefExpr(const ObjCSubscriptRefExpr *S) {
1247  VisitExpr(S);
1248  VisitDecl(S->getAtIndexMethodDecl());
1249  VisitDecl(S->setAtIndexMethodDecl());
1250}
1251
1252void StmtProfiler::VisitObjCMessageExpr(const ObjCMessageExpr *S) {
1253  VisitExpr(S);
1254  VisitName(S->getSelector());
1255  VisitDecl(S->getMethodDecl());
1256}
1257
1258void StmtProfiler::VisitObjCIsaExpr(const ObjCIsaExpr *S) {
1259  VisitExpr(S);
1260  ID.AddBoolean(S->isArrow());
1261}
1262
1263void StmtProfiler::VisitObjCBoolLiteralExpr(const ObjCBoolLiteralExpr *S) {
1264  VisitExpr(S);
1265  ID.AddBoolean(S->getValue());
1266}
1267
1268void StmtProfiler::VisitObjCIndirectCopyRestoreExpr(
1269    const ObjCIndirectCopyRestoreExpr *S) {
1270  VisitExpr(S);
1271  ID.AddBoolean(S->shouldCopy());
1272}
1273
1274void StmtProfiler::VisitObjCBridgedCastExpr(const ObjCBridgedCastExpr *S) {
1275  VisitExplicitCastExpr(S);
1276  ID.AddBoolean(S->getBridgeKind());
1277}
1278
1279void StmtProfiler::VisitDecl(const Decl *D) {
1280  ID.AddInteger(D? D->getKind() : 0);
1281
1282  if (Canonical && D) {
1283    if (const NonTypeTemplateParmDecl *NTTP =
1284          dyn_cast<NonTypeTemplateParmDecl>(D)) {
1285      ID.AddInteger(NTTP->getDepth());
1286      ID.AddInteger(NTTP->getIndex());
1287      ID.AddBoolean(NTTP->isParameterPack());
1288      VisitType(NTTP->getType());
1289      return;
1290    }
1291
1292    if (const ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) {
1293      // The Itanium C++ ABI uses the type, scope depth, and scope
1294      // index of a parameter when mangling expressions that involve
1295      // function parameters, so we will use the parameter's type for
1296      // establishing function parameter identity. That way, our
1297      // definition of "equivalent" (per C++ [temp.over.link]) is at
1298      // least as strong as the definition of "equivalent" used for
1299      // name mangling.
1300      VisitType(Parm->getType());
1301      ID.AddInteger(Parm->getFunctionScopeDepth());
1302      ID.AddInteger(Parm->getFunctionScopeIndex());
1303      return;
1304    }
1305
1306    if (const TemplateTypeParmDecl *TTP =
1307          dyn_cast<TemplateTypeParmDecl>(D)) {
1308      ID.AddInteger(TTP->getDepth());
1309      ID.AddInteger(TTP->getIndex());
1310      ID.AddBoolean(TTP->isParameterPack());
1311      return;
1312    }
1313
1314    if (const TemplateTemplateParmDecl *TTP =
1315          dyn_cast<TemplateTemplateParmDecl>(D)) {
1316      ID.AddInteger(TTP->getDepth());
1317      ID.AddInteger(TTP->getIndex());
1318      ID.AddBoolean(TTP->isParameterPack());
1319      return;
1320    }
1321  }
1322
1323  ID.AddPointer(D? D->getCanonicalDecl() : nullptr);
1324}
1325
1326void StmtProfiler::VisitType(QualType T) {
1327  if (Canonical)
1328    T = Context.getCanonicalType(T);
1329
1330  ID.AddPointer(T.getAsOpaquePtr());
1331}
1332
1333void StmtProfiler::VisitName(DeclarationName Name) {
1334  ID.AddPointer(Name.getAsOpaquePtr());
1335}
1336
1337void StmtProfiler::VisitNestedNameSpecifier(NestedNameSpecifier *NNS) {
1338  if (Canonical)
1339    NNS = Context.getCanonicalNestedNameSpecifier(NNS);
1340  ID.AddPointer(NNS);
1341}
1342
1343void StmtProfiler::VisitTemplateName(TemplateName Name) {
1344  if (Canonical)
1345    Name = Context.getCanonicalTemplateName(Name);
1346
1347  Name.Profile(ID);
1348}
1349
1350void StmtProfiler::VisitTemplateArguments(const TemplateArgumentLoc *Args,
1351                                          unsigned NumArgs) {
1352  ID.AddInteger(NumArgs);
1353  for (unsigned I = 0; I != NumArgs; ++I)
1354    VisitTemplateArgument(Args[I].getArgument());
1355}
1356
1357void StmtProfiler::VisitTemplateArgument(const TemplateArgument &Arg) {
1358  // Mostly repetitive with TemplateArgument::Profile!
1359  ID.AddInteger(Arg.getKind());
1360  switch (Arg.getKind()) {
1361  case TemplateArgument::Null:
1362    break;
1363
1364  case TemplateArgument::Type:
1365    VisitType(Arg.getAsType());
1366    break;
1367
1368  case TemplateArgument::Template:
1369  case TemplateArgument::TemplateExpansion:
1370    VisitTemplateName(Arg.getAsTemplateOrTemplatePattern());
1371    break;
1372
1373  case TemplateArgument::Declaration:
1374    VisitDecl(Arg.getAsDecl());
1375    break;
1376
1377  case TemplateArgument::NullPtr:
1378    VisitType(Arg.getNullPtrType());
1379    break;
1380
1381  case TemplateArgument::Integral:
1382    Arg.getAsIntegral().Profile(ID);
1383    VisitType(Arg.getIntegralType());
1384    break;
1385
1386  case TemplateArgument::Expression:
1387    Visit(Arg.getAsExpr());
1388    break;
1389
1390  case TemplateArgument::Pack:
1391    for (const auto &P : Arg.pack_elements())
1392      VisitTemplateArgument(P);
1393    break;
1394  }
1395}
1396
1397void Stmt::Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
1398                   bool Canonical) const {
1399  StmtProfiler Profiler(ID, Context, Canonical);
1400  Profiler.Visit(this);
1401}
1402