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/ExprOpenMP.h"
22 #include "clang/AST/StmtVisitor.h"
23 #include "llvm/ADT/FoldingSet.h"
24 using namespace clang;
25 
26 namespace {
27   class StmtProfiler : public ConstStmtVisitor<StmtProfiler> {
28     llvm::FoldingSetNodeID &ID;
29     const ASTContext &Context;
30     bool Canonical;
31 
32   public:
33     StmtProfiler(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
34                  bool Canonical)
35       : ID(ID), Context(Context), Canonical(Canonical) { }
36 
37     void VisitStmt(const Stmt *S);
38 
39 #define STMT(Node, Base) void Visit##Node(const Node *S);
40 #include "clang/AST/StmtNodes.inc"
41 
42     /// \brief Visit a declaration that is referenced within an expression
43     /// or statement.
44     void VisitDecl(const 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 TemplateArgumentLoc *Args,
64                                 unsigned NumArgs);
65 
66     /// \brief Visit a single template argument.
67     void VisitTemplateArgument(const TemplateArgument &Arg);
68   };
69 }
70 
71 void StmtProfiler::VisitStmt(const Stmt *S) {
72   assert(S && "Requires non-null Stmt pointer");
73   ID.AddInteger(S->getStmtClass());
74   for (const Stmt *SubStmt : S->children()) {
75     if (SubStmt)
76       Visit(SubStmt);
77     else
78       ID.AddInteger(0);
79   }
80 }
81 
82 void StmtProfiler::VisitDeclStmt(const DeclStmt *S) {
83   VisitStmt(S);
84   for (const auto *D : S->decls())
85     VisitDecl(D);
86 }
87 
88 void StmtProfiler::VisitNullStmt(const NullStmt *S) {
89   VisitStmt(S);
90 }
91 
92 void StmtProfiler::VisitCompoundStmt(const CompoundStmt *S) {
93   VisitStmt(S);
94 }
95 
96 void StmtProfiler::VisitSwitchCase(const SwitchCase *S) {
97   VisitStmt(S);
98 }
99 
100 void StmtProfiler::VisitCaseStmt(const CaseStmt *S) {
101   VisitStmt(S);
102 }
103 
104 void StmtProfiler::VisitDefaultStmt(const DefaultStmt *S) {
105   VisitStmt(S);
106 }
107 
108 void StmtProfiler::VisitLabelStmt(const LabelStmt *S) {
109   VisitStmt(S);
110   VisitDecl(S->getDecl());
111 }
112 
113 void StmtProfiler::VisitAttributedStmt(const AttributedStmt *S) {
114   VisitStmt(S);
115   // TODO: maybe visit attributes?
116 }
117 
118 void StmtProfiler::VisitIfStmt(const IfStmt *S) {
119   VisitStmt(S);
120   VisitDecl(S->getConditionVariable());
121 }
122 
123 void StmtProfiler::VisitSwitchStmt(const SwitchStmt *S) {
124   VisitStmt(S);
125   VisitDecl(S->getConditionVariable());
126 }
127 
128 void StmtProfiler::VisitWhileStmt(const WhileStmt *S) {
129   VisitStmt(S);
130   VisitDecl(S->getConditionVariable());
131 }
132 
133 void StmtProfiler::VisitDoStmt(const DoStmt *S) {
134   VisitStmt(S);
135 }
136 
137 void StmtProfiler::VisitForStmt(const ForStmt *S) {
138   VisitStmt(S);
139 }
140 
141 void StmtProfiler::VisitGotoStmt(const GotoStmt *S) {
142   VisitStmt(S);
143   VisitDecl(S->getLabel());
144 }
145 
146 void StmtProfiler::VisitIndirectGotoStmt(const IndirectGotoStmt *S) {
147   VisitStmt(S);
148 }
149 
150 void StmtProfiler::VisitContinueStmt(const ContinueStmt *S) {
151   VisitStmt(S);
152 }
153 
154 void StmtProfiler::VisitBreakStmt(const BreakStmt *S) {
155   VisitStmt(S);
156 }
157 
158 void StmtProfiler::VisitReturnStmt(const ReturnStmt *S) {
159   VisitStmt(S);
160 }
161 
162 void StmtProfiler::VisitGCCAsmStmt(const GCCAsmStmt *S) {
163   VisitStmt(S);
164   ID.AddBoolean(S->isVolatile());
165   ID.AddBoolean(S->isSimple());
166   VisitStringLiteral(S->getAsmString());
167   ID.AddInteger(S->getNumOutputs());
168   for (unsigned I = 0, N = S->getNumOutputs(); I != N; ++I) {
169     ID.AddString(S->getOutputName(I));
170     VisitStringLiteral(S->getOutputConstraintLiteral(I));
171   }
172   ID.AddInteger(S->getNumInputs());
173   for (unsigned I = 0, N = S->getNumInputs(); I != N; ++I) {
174     ID.AddString(S->getInputName(I));
175     VisitStringLiteral(S->getInputConstraintLiteral(I));
176   }
177   ID.AddInteger(S->getNumClobbers());
178   for (unsigned I = 0, N = S->getNumClobbers(); I != N; ++I)
179     VisitStringLiteral(S->getClobberStringLiteral(I));
180 }
181 
182 void StmtProfiler::VisitMSAsmStmt(const MSAsmStmt *S) {
183   // FIXME: Implement MS style inline asm statement profiler.
184   VisitStmt(S);
185 }
186 
187 void StmtProfiler::VisitCXXCatchStmt(const CXXCatchStmt *S) {
188   VisitStmt(S);
189   VisitType(S->getCaughtType());
190 }
191 
192 void StmtProfiler::VisitCXXTryStmt(const CXXTryStmt *S) {
193   VisitStmt(S);
194 }
195 
196 void StmtProfiler::VisitCXXForRangeStmt(const CXXForRangeStmt *S) {
197   VisitStmt(S);
198 }
199 
200 void StmtProfiler::VisitMSDependentExistsStmt(const MSDependentExistsStmt *S) {
201   VisitStmt(S);
202   ID.AddBoolean(S->isIfExists());
203   VisitNestedNameSpecifier(S->getQualifierLoc().getNestedNameSpecifier());
204   VisitName(S->getNameInfo().getName());
205 }
206 
207 void StmtProfiler::VisitSEHTryStmt(const SEHTryStmt *S) {
208   VisitStmt(S);
209 }
210 
211 void StmtProfiler::VisitSEHFinallyStmt(const SEHFinallyStmt *S) {
212   VisitStmt(S);
213 }
214 
215 void StmtProfiler::VisitSEHExceptStmt(const SEHExceptStmt *S) {
216   VisitStmt(S);
217 }
218 
219 void StmtProfiler::VisitSEHLeaveStmt(const SEHLeaveStmt *S) {
220   VisitStmt(S);
221 }
222 
223 void StmtProfiler::VisitCapturedStmt(const CapturedStmt *S) {
224   VisitStmt(S);
225 }
226 
227 void StmtProfiler::VisitObjCForCollectionStmt(const ObjCForCollectionStmt *S) {
228   VisitStmt(S);
229 }
230 
231 void StmtProfiler::VisitObjCAtCatchStmt(const ObjCAtCatchStmt *S) {
232   VisitStmt(S);
233   ID.AddBoolean(S->hasEllipsis());
234   if (S->getCatchParamDecl())
235     VisitType(S->getCatchParamDecl()->getType());
236 }
237 
238 void StmtProfiler::VisitObjCAtFinallyStmt(const ObjCAtFinallyStmt *S) {
239   VisitStmt(S);
240 }
241 
242 void StmtProfiler::VisitObjCAtTryStmt(const ObjCAtTryStmt *S) {
243   VisitStmt(S);
244 }
245 
246 void
247 StmtProfiler::VisitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt *S) {
248   VisitStmt(S);
249 }
250 
251 void StmtProfiler::VisitObjCAtThrowStmt(const ObjCAtThrowStmt *S) {
252   VisitStmt(S);
253 }
254 
255 void
256 StmtProfiler::VisitObjCAutoreleasePoolStmt(const ObjCAutoreleasePoolStmt *S) {
257   VisitStmt(S);
258 }
259 
260 namespace {
261 class OMPClauseProfiler : public ConstOMPClauseVisitor<OMPClauseProfiler> {
262   StmtProfiler *Profiler;
263   /// \brief Process clauses with list of variables.
264   template <typename T>
265   void VisitOMPClauseList(T *Node);
266 
267 public:
268   OMPClauseProfiler(StmtProfiler *P) : Profiler(P) { }
269 #define OPENMP_CLAUSE(Name, Class)                                             \
270   void Visit##Class(const Class *C);
271 #include "clang/Basic/OpenMPKinds.def"
272   void VistOMPClauseWithPreInit(const OMPClauseWithPreInit *C);
273   void VistOMPClauseWithPostUpdate(const OMPClauseWithPostUpdate *C);
274 };
275 
276 void OMPClauseProfiler::VistOMPClauseWithPreInit(
277     const OMPClauseWithPreInit *C) {
278   if (auto *S = C->getPreInitStmt())
279     Profiler->VisitStmt(S);
280 }
281 
282 void OMPClauseProfiler::VistOMPClauseWithPostUpdate(
283     const OMPClauseWithPostUpdate *C) {
284   VistOMPClauseWithPreInit(C);
285   if (auto *E = C->getPostUpdateExpr())
286     Profiler->VisitStmt(E);
287 }
288 
289 void OMPClauseProfiler::VisitOMPIfClause(const OMPIfClause *C) {
290   if (C->getCondition())
291     Profiler->VisitStmt(C->getCondition());
292 }
293 
294 void OMPClauseProfiler::VisitOMPFinalClause(const OMPFinalClause *C) {
295   if (C->getCondition())
296     Profiler->VisitStmt(C->getCondition());
297 }
298 
299 void OMPClauseProfiler::VisitOMPNumThreadsClause(const OMPNumThreadsClause *C) {
300   if (C->getNumThreads())
301     Profiler->VisitStmt(C->getNumThreads());
302 }
303 
304 void OMPClauseProfiler::VisitOMPSafelenClause(const OMPSafelenClause *C) {
305   if (C->getSafelen())
306     Profiler->VisitStmt(C->getSafelen());
307 }
308 
309 void OMPClauseProfiler::VisitOMPSimdlenClause(const OMPSimdlenClause *C) {
310   if (C->getSimdlen())
311     Profiler->VisitStmt(C->getSimdlen());
312 }
313 
314 void OMPClauseProfiler::VisitOMPCollapseClause(const OMPCollapseClause *C) {
315   if (C->getNumForLoops())
316     Profiler->VisitStmt(C->getNumForLoops());
317 }
318 
319 void OMPClauseProfiler::VisitOMPDefaultClause(const OMPDefaultClause *C) { }
320 
321 void OMPClauseProfiler::VisitOMPProcBindClause(const OMPProcBindClause *C) { }
322 
323 void OMPClauseProfiler::VisitOMPScheduleClause(const OMPScheduleClause *C) {
324   VistOMPClauseWithPreInit(C);
325   if (auto *S = C->getChunkSize())
326     Profiler->VisitStmt(S);
327 }
328 
329 void OMPClauseProfiler::VisitOMPOrderedClause(const OMPOrderedClause *C) {
330   if (auto *Num = C->getNumForLoops())
331     Profiler->VisitStmt(Num);
332 }
333 
334 void OMPClauseProfiler::VisitOMPNowaitClause(const OMPNowaitClause *) {}
335 
336 void OMPClauseProfiler::VisitOMPUntiedClause(const OMPUntiedClause *) {}
337 
338 void OMPClauseProfiler::VisitOMPMergeableClause(const OMPMergeableClause *) {}
339 
340 void OMPClauseProfiler::VisitOMPReadClause(const OMPReadClause *) {}
341 
342 void OMPClauseProfiler::VisitOMPWriteClause(const OMPWriteClause *) {}
343 
344 void OMPClauseProfiler::VisitOMPUpdateClause(const OMPUpdateClause *) {}
345 
346 void OMPClauseProfiler::VisitOMPCaptureClause(const OMPCaptureClause *) {}
347 
348 void OMPClauseProfiler::VisitOMPSeqCstClause(const OMPSeqCstClause *) {}
349 
350 void OMPClauseProfiler::VisitOMPThreadsClause(const OMPThreadsClause *) {}
351 
352 void OMPClauseProfiler::VisitOMPSIMDClause(const OMPSIMDClause *) {}
353 
354 void OMPClauseProfiler::VisitOMPNogroupClause(const OMPNogroupClause *) {}
355 
356 template<typename T>
357 void OMPClauseProfiler::VisitOMPClauseList(T *Node) {
358   for (auto *E : Node->varlists()) {
359     if (E)
360       Profiler->VisitStmt(E);
361   }
362 }
363 
364 void OMPClauseProfiler::VisitOMPPrivateClause(const OMPPrivateClause *C) {
365   VisitOMPClauseList(C);
366   for (auto *E : C->private_copies()) {
367     if (E)
368       Profiler->VisitStmt(E);
369   }
370 }
371 void
372 OMPClauseProfiler::VisitOMPFirstprivateClause(const OMPFirstprivateClause *C) {
373   VisitOMPClauseList(C);
374   VistOMPClauseWithPreInit(C);
375   for (auto *E : C->private_copies()) {
376     if (E)
377       Profiler->VisitStmt(E);
378   }
379   for (auto *E : C->inits()) {
380     if (E)
381       Profiler->VisitStmt(E);
382   }
383 }
384 void
385 OMPClauseProfiler::VisitOMPLastprivateClause(const OMPLastprivateClause *C) {
386   VisitOMPClauseList(C);
387   VistOMPClauseWithPostUpdate(C);
388   for (auto *E : C->source_exprs()) {
389     if (E)
390       Profiler->VisitStmt(E);
391   }
392   for (auto *E : C->destination_exprs()) {
393     if (E)
394       Profiler->VisitStmt(E);
395   }
396   for (auto *E : C->assignment_ops()) {
397     if (E)
398       Profiler->VisitStmt(E);
399   }
400 }
401 void OMPClauseProfiler::VisitOMPSharedClause(const OMPSharedClause *C) {
402   VisitOMPClauseList(C);
403 }
404 void OMPClauseProfiler::VisitOMPReductionClause(
405                                          const OMPReductionClause *C) {
406   Profiler->VisitNestedNameSpecifier(
407       C->getQualifierLoc().getNestedNameSpecifier());
408   Profiler->VisitName(C->getNameInfo().getName());
409   VisitOMPClauseList(C);
410   VistOMPClauseWithPostUpdate(C);
411   for (auto *E : C->privates()) {
412     if (E)
413       Profiler->VisitStmt(E);
414   }
415   for (auto *E : C->lhs_exprs()) {
416     if (E)
417       Profiler->VisitStmt(E);
418   }
419   for (auto *E : C->rhs_exprs()) {
420     if (E)
421       Profiler->VisitStmt(E);
422   }
423   for (auto *E : C->reduction_ops()) {
424     if (E)
425       Profiler->VisitStmt(E);
426   }
427 }
428 void OMPClauseProfiler::VisitOMPLinearClause(const OMPLinearClause *C) {
429   VisitOMPClauseList(C);
430   VistOMPClauseWithPostUpdate(C);
431   for (auto *E : C->privates()) {
432     if (E)
433       Profiler->VisitStmt(E);
434   }
435   for (auto *E : C->inits()) {
436     if (E)
437       Profiler->VisitStmt(E);
438   }
439   for (auto *E : C->updates()) {
440     if (E)
441       Profiler->VisitStmt(E);
442   }
443   for (auto *E : C->finals()) {
444     if (E)
445       Profiler->VisitStmt(E);
446   }
447   if (C->getStep())
448     Profiler->VisitStmt(C->getStep());
449   if (C->getCalcStep())
450     Profiler->VisitStmt(C->getCalcStep());
451 }
452 void OMPClauseProfiler::VisitOMPAlignedClause(const OMPAlignedClause *C) {
453   VisitOMPClauseList(C);
454   if (C->getAlignment())
455     Profiler->VisitStmt(C->getAlignment());
456 }
457 void OMPClauseProfiler::VisitOMPCopyinClause(const OMPCopyinClause *C) {
458   VisitOMPClauseList(C);
459   for (auto *E : C->source_exprs()) {
460     if (E)
461       Profiler->VisitStmt(E);
462   }
463   for (auto *E : C->destination_exprs()) {
464     if (E)
465       Profiler->VisitStmt(E);
466   }
467   for (auto *E : C->assignment_ops()) {
468     if (E)
469       Profiler->VisitStmt(E);
470   }
471 }
472 void
473 OMPClauseProfiler::VisitOMPCopyprivateClause(const OMPCopyprivateClause *C) {
474   VisitOMPClauseList(C);
475   for (auto *E : C->source_exprs()) {
476     if (E)
477       Profiler->VisitStmt(E);
478   }
479   for (auto *E : C->destination_exprs()) {
480     if (E)
481       Profiler->VisitStmt(E);
482   }
483   for (auto *E : C->assignment_ops()) {
484     if (E)
485       Profiler->VisitStmt(E);
486   }
487 }
488 void OMPClauseProfiler::VisitOMPFlushClause(const OMPFlushClause *C) {
489   VisitOMPClauseList(C);
490 }
491 void OMPClauseProfiler::VisitOMPDependClause(const OMPDependClause *C) {
492   VisitOMPClauseList(C);
493 }
494 void OMPClauseProfiler::VisitOMPDeviceClause(const OMPDeviceClause *C) {
495   if (C->getDevice())
496     Profiler->VisitStmt(C->getDevice());
497 }
498 void OMPClauseProfiler::VisitOMPMapClause(const OMPMapClause *C) {
499   VisitOMPClauseList(C);
500 }
501 void OMPClauseProfiler::VisitOMPNumTeamsClause(const OMPNumTeamsClause *C) {
502   if (C->getNumTeams())
503     Profiler->VisitStmt(C->getNumTeams());
504 }
505 void OMPClauseProfiler::VisitOMPThreadLimitClause(
506     const OMPThreadLimitClause *C) {
507   if (C->getThreadLimit())
508     Profiler->VisitStmt(C->getThreadLimit());
509 }
510 void OMPClauseProfiler::VisitOMPPriorityClause(const OMPPriorityClause *C) {
511   if (C->getPriority())
512     Profiler->VisitStmt(C->getPriority());
513 }
514 void OMPClauseProfiler::VisitOMPGrainsizeClause(const OMPGrainsizeClause *C) {
515   if (C->getGrainsize())
516     Profiler->VisitStmt(C->getGrainsize());
517 }
518 void OMPClauseProfiler::VisitOMPNumTasksClause(const OMPNumTasksClause *C) {
519   if (C->getNumTasks())
520     Profiler->VisitStmt(C->getNumTasks());
521 }
522 void OMPClauseProfiler::VisitOMPHintClause(const OMPHintClause *C) {
523   if (C->getHint())
524     Profiler->VisitStmt(C->getHint());
525 }
526 void OMPClauseProfiler::VisitOMPToClause(const OMPToClause *C) {
527   VisitOMPClauseList(C);
528 }
529 void OMPClauseProfiler::VisitOMPFromClause(const OMPFromClause *C) {
530   VisitOMPClauseList(C);
531 }
532 void OMPClauseProfiler::VisitOMPUseDevicePtrClause(
533     const OMPUseDevicePtrClause *C) {
534   VisitOMPClauseList(C);
535 }
536 void OMPClauseProfiler::VisitOMPIsDevicePtrClause(
537     const OMPIsDevicePtrClause *C) {
538   VisitOMPClauseList(C);
539 }
540 }
541 
542 void
543 StmtProfiler::VisitOMPExecutableDirective(const OMPExecutableDirective *S) {
544   VisitStmt(S);
545   OMPClauseProfiler P(this);
546   ArrayRef<OMPClause *> Clauses = S->clauses();
547   for (ArrayRef<OMPClause *>::iterator I = Clauses.begin(), E = Clauses.end();
548        I != E; ++I)
549     if (*I)
550       P.Visit(*I);
551 }
552 
553 void StmtProfiler::VisitOMPLoopDirective(const OMPLoopDirective *S) {
554   VisitOMPExecutableDirective(S);
555 }
556 
557 void StmtProfiler::VisitOMPParallelDirective(const OMPParallelDirective *S) {
558   VisitOMPExecutableDirective(S);
559 }
560 
561 void StmtProfiler::VisitOMPSimdDirective(const OMPSimdDirective *S) {
562   VisitOMPLoopDirective(S);
563 }
564 
565 void StmtProfiler::VisitOMPForDirective(const OMPForDirective *S) {
566   VisitOMPLoopDirective(S);
567 }
568 
569 void StmtProfiler::VisitOMPForSimdDirective(const OMPForSimdDirective *S) {
570   VisitOMPLoopDirective(S);
571 }
572 
573 void StmtProfiler::VisitOMPSectionsDirective(const OMPSectionsDirective *S) {
574   VisitOMPExecutableDirective(S);
575 }
576 
577 void StmtProfiler::VisitOMPSectionDirective(const OMPSectionDirective *S) {
578   VisitOMPExecutableDirective(S);
579 }
580 
581 void StmtProfiler::VisitOMPSingleDirective(const OMPSingleDirective *S) {
582   VisitOMPExecutableDirective(S);
583 }
584 
585 void StmtProfiler::VisitOMPMasterDirective(const OMPMasterDirective *S) {
586   VisitOMPExecutableDirective(S);
587 }
588 
589 void StmtProfiler::VisitOMPCriticalDirective(const OMPCriticalDirective *S) {
590   VisitOMPExecutableDirective(S);
591   VisitName(S->getDirectiveName().getName());
592 }
593 
594 void
595 StmtProfiler::VisitOMPParallelForDirective(const OMPParallelForDirective *S) {
596   VisitOMPLoopDirective(S);
597 }
598 
599 void StmtProfiler::VisitOMPParallelForSimdDirective(
600     const OMPParallelForSimdDirective *S) {
601   VisitOMPLoopDirective(S);
602 }
603 
604 void StmtProfiler::VisitOMPParallelSectionsDirective(
605     const OMPParallelSectionsDirective *S) {
606   VisitOMPExecutableDirective(S);
607 }
608 
609 void StmtProfiler::VisitOMPTaskDirective(const OMPTaskDirective *S) {
610   VisitOMPExecutableDirective(S);
611 }
612 
613 void StmtProfiler::VisitOMPTaskyieldDirective(const OMPTaskyieldDirective *S) {
614   VisitOMPExecutableDirective(S);
615 }
616 
617 void StmtProfiler::VisitOMPBarrierDirective(const OMPBarrierDirective *S) {
618   VisitOMPExecutableDirective(S);
619 }
620 
621 void StmtProfiler::VisitOMPTaskwaitDirective(const OMPTaskwaitDirective *S) {
622   VisitOMPExecutableDirective(S);
623 }
624 
625 void StmtProfiler::VisitOMPTaskgroupDirective(const OMPTaskgroupDirective *S) {
626   VisitOMPExecutableDirective(S);
627 }
628 
629 void StmtProfiler::VisitOMPFlushDirective(const OMPFlushDirective *S) {
630   VisitOMPExecutableDirective(S);
631 }
632 
633 void StmtProfiler::VisitOMPOrderedDirective(const OMPOrderedDirective *S) {
634   VisitOMPExecutableDirective(S);
635 }
636 
637 void StmtProfiler::VisitOMPAtomicDirective(const OMPAtomicDirective *S) {
638   VisitOMPExecutableDirective(S);
639 }
640 
641 void StmtProfiler::VisitOMPTargetDirective(const OMPTargetDirective *S) {
642   VisitOMPExecutableDirective(S);
643 }
644 
645 void StmtProfiler::VisitOMPTargetDataDirective(const OMPTargetDataDirective *S) {
646   VisitOMPExecutableDirective(S);
647 }
648 
649 void StmtProfiler::VisitOMPTargetEnterDataDirective(
650     const OMPTargetEnterDataDirective *S) {
651   VisitOMPExecutableDirective(S);
652 }
653 
654 void StmtProfiler::VisitOMPTargetExitDataDirective(
655     const OMPTargetExitDataDirective *S) {
656   VisitOMPExecutableDirective(S);
657 }
658 
659 void StmtProfiler::VisitOMPTargetParallelDirective(
660     const OMPTargetParallelDirective *S) {
661   VisitOMPExecutableDirective(S);
662 }
663 
664 void StmtProfiler::VisitOMPTargetParallelForDirective(
665     const OMPTargetParallelForDirective *S) {
666   VisitOMPExecutableDirective(S);
667 }
668 
669 void StmtProfiler::VisitOMPTeamsDirective(const OMPTeamsDirective *S) {
670   VisitOMPExecutableDirective(S);
671 }
672 
673 void StmtProfiler::VisitOMPCancellationPointDirective(
674     const OMPCancellationPointDirective *S) {
675   VisitOMPExecutableDirective(S);
676 }
677 
678 void StmtProfiler::VisitOMPCancelDirective(const OMPCancelDirective *S) {
679   VisitOMPExecutableDirective(S);
680 }
681 
682 void StmtProfiler::VisitOMPTaskLoopDirective(const OMPTaskLoopDirective *S) {
683   VisitOMPLoopDirective(S);
684 }
685 
686 void StmtProfiler::VisitOMPTaskLoopSimdDirective(
687     const OMPTaskLoopSimdDirective *S) {
688   VisitOMPLoopDirective(S);
689 }
690 
691 void StmtProfiler::VisitOMPDistributeDirective(
692     const OMPDistributeDirective *S) {
693   VisitOMPLoopDirective(S);
694 }
695 
696 void OMPClauseProfiler::VisitOMPDistScheduleClause(
697     const OMPDistScheduleClause *C) {
698   VistOMPClauseWithPreInit(C);
699   if (auto *S = C->getChunkSize())
700     Profiler->VisitStmt(S);
701 }
702 
703 void OMPClauseProfiler::VisitOMPDefaultmapClause(const OMPDefaultmapClause *) {}
704 
705 void StmtProfiler::VisitOMPTargetUpdateDirective(
706     const OMPTargetUpdateDirective *S) {
707   VisitOMPExecutableDirective(S);
708 }
709 
710 void StmtProfiler::VisitOMPDistributeParallelForDirective(
711     const OMPDistributeParallelForDirective *S) {
712   VisitOMPLoopDirective(S);
713 }
714 
715 void StmtProfiler::VisitOMPDistributeParallelForSimdDirective(
716     const OMPDistributeParallelForSimdDirective *S) {
717   VisitOMPLoopDirective(S);
718 }
719 
720 void StmtProfiler::VisitOMPDistributeSimdDirective(
721     const OMPDistributeSimdDirective *S) {
722   VisitOMPLoopDirective(S);
723 }
724 
725 void StmtProfiler::VisitOMPTargetParallelForSimdDirective(
726     const OMPTargetParallelForSimdDirective *S) {
727   VisitOMPLoopDirective(S);
728 }
729 
730 void StmtProfiler::VisitOMPTargetSimdDirective(
731     const OMPTargetSimdDirective *S) {
732   VisitOMPLoopDirective(S);
733 }
734 
735 void StmtProfiler::VisitExpr(const Expr *S) {
736   VisitStmt(S);
737 }
738 
739 void StmtProfiler::VisitDeclRefExpr(const DeclRefExpr *S) {
740   VisitExpr(S);
741   if (!Canonical)
742     VisitNestedNameSpecifier(S->getQualifier());
743   VisitDecl(S->getDecl());
744   if (!Canonical)
745     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
746 }
747 
748 void StmtProfiler::VisitPredefinedExpr(const PredefinedExpr *S) {
749   VisitExpr(S);
750   ID.AddInteger(S->getIdentType());
751 }
752 
753 void StmtProfiler::VisitIntegerLiteral(const IntegerLiteral *S) {
754   VisitExpr(S);
755   S->getValue().Profile(ID);
756   ID.AddInteger(S->getType()->castAs<BuiltinType>()->getKind());
757 }
758 
759 void StmtProfiler::VisitCharacterLiteral(const CharacterLiteral *S) {
760   VisitExpr(S);
761   ID.AddInteger(S->getKind());
762   ID.AddInteger(S->getValue());
763 }
764 
765 void StmtProfiler::VisitFloatingLiteral(const FloatingLiteral *S) {
766   VisitExpr(S);
767   S->getValue().Profile(ID);
768   ID.AddBoolean(S->isExact());
769   ID.AddInteger(S->getType()->castAs<BuiltinType>()->getKind());
770 }
771 
772 void StmtProfiler::VisitImaginaryLiteral(const ImaginaryLiteral *S) {
773   VisitExpr(S);
774 }
775 
776 void StmtProfiler::VisitStringLiteral(const StringLiteral *S) {
777   VisitExpr(S);
778   ID.AddString(S->getBytes());
779   ID.AddInteger(S->getKind());
780 }
781 
782 void StmtProfiler::VisitParenExpr(const ParenExpr *S) {
783   VisitExpr(S);
784 }
785 
786 void StmtProfiler::VisitParenListExpr(const ParenListExpr *S) {
787   VisitExpr(S);
788 }
789 
790 void StmtProfiler::VisitUnaryOperator(const UnaryOperator *S) {
791   VisitExpr(S);
792   ID.AddInteger(S->getOpcode());
793 }
794 
795 void StmtProfiler::VisitOffsetOfExpr(const OffsetOfExpr *S) {
796   VisitType(S->getTypeSourceInfo()->getType());
797   unsigned n = S->getNumComponents();
798   for (unsigned i = 0; i < n; ++i) {
799     const OffsetOfNode &ON = S->getComponent(i);
800     ID.AddInteger(ON.getKind());
801     switch (ON.getKind()) {
802     case OffsetOfNode::Array:
803       // Expressions handled below.
804       break;
805 
806     case OffsetOfNode::Field:
807       VisitDecl(ON.getField());
808       break;
809 
810     case OffsetOfNode::Identifier:
811       ID.AddPointer(ON.getFieldName());
812       break;
813 
814     case OffsetOfNode::Base:
815       // These nodes are implicit, and therefore don't need profiling.
816       break;
817     }
818   }
819 
820   VisitExpr(S);
821 }
822 
823 void
824 StmtProfiler::VisitUnaryExprOrTypeTraitExpr(const UnaryExprOrTypeTraitExpr *S) {
825   VisitExpr(S);
826   ID.AddInteger(S->getKind());
827   if (S->isArgumentType())
828     VisitType(S->getArgumentType());
829 }
830 
831 void StmtProfiler::VisitArraySubscriptExpr(const ArraySubscriptExpr *S) {
832   VisitExpr(S);
833 }
834 
835 void StmtProfiler::VisitOMPArraySectionExpr(const OMPArraySectionExpr *S) {
836   VisitExpr(S);
837 }
838 
839 void StmtProfiler::VisitCallExpr(const CallExpr *S) {
840   VisitExpr(S);
841 }
842 
843 void StmtProfiler::VisitMemberExpr(const MemberExpr *S) {
844   VisitExpr(S);
845   VisitDecl(S->getMemberDecl());
846   if (!Canonical)
847     VisitNestedNameSpecifier(S->getQualifier());
848   ID.AddBoolean(S->isArrow());
849 }
850 
851 void StmtProfiler::VisitCompoundLiteralExpr(const CompoundLiteralExpr *S) {
852   VisitExpr(S);
853   ID.AddBoolean(S->isFileScope());
854 }
855 
856 void StmtProfiler::VisitCastExpr(const CastExpr *S) {
857   VisitExpr(S);
858 }
859 
860 void StmtProfiler::VisitImplicitCastExpr(const ImplicitCastExpr *S) {
861   VisitCastExpr(S);
862   ID.AddInteger(S->getValueKind());
863 }
864 
865 void StmtProfiler::VisitExplicitCastExpr(const ExplicitCastExpr *S) {
866   VisitCastExpr(S);
867   VisitType(S->getTypeAsWritten());
868 }
869 
870 void StmtProfiler::VisitCStyleCastExpr(const CStyleCastExpr *S) {
871   VisitExplicitCastExpr(S);
872 }
873 
874 void StmtProfiler::VisitBinaryOperator(const BinaryOperator *S) {
875   VisitExpr(S);
876   ID.AddInteger(S->getOpcode());
877 }
878 
879 void
880 StmtProfiler::VisitCompoundAssignOperator(const CompoundAssignOperator *S) {
881   VisitBinaryOperator(S);
882 }
883 
884 void StmtProfiler::VisitConditionalOperator(const ConditionalOperator *S) {
885   VisitExpr(S);
886 }
887 
888 void StmtProfiler::VisitBinaryConditionalOperator(
889     const BinaryConditionalOperator *S) {
890   VisitExpr(S);
891 }
892 
893 void StmtProfiler::VisitAddrLabelExpr(const AddrLabelExpr *S) {
894   VisitExpr(S);
895   VisitDecl(S->getLabel());
896 }
897 
898 void StmtProfiler::VisitStmtExpr(const StmtExpr *S) {
899   VisitExpr(S);
900 }
901 
902 void StmtProfiler::VisitShuffleVectorExpr(const ShuffleVectorExpr *S) {
903   VisitExpr(S);
904 }
905 
906 void StmtProfiler::VisitConvertVectorExpr(const ConvertVectorExpr *S) {
907   VisitExpr(S);
908 }
909 
910 void StmtProfiler::VisitChooseExpr(const ChooseExpr *S) {
911   VisitExpr(S);
912 }
913 
914 void StmtProfiler::VisitGNUNullExpr(const GNUNullExpr *S) {
915   VisitExpr(S);
916 }
917 
918 void StmtProfiler::VisitVAArgExpr(const VAArgExpr *S) {
919   VisitExpr(S);
920 }
921 
922 void StmtProfiler::VisitInitListExpr(const InitListExpr *S) {
923   if (S->getSyntacticForm()) {
924     VisitInitListExpr(S->getSyntacticForm());
925     return;
926   }
927 
928   VisitExpr(S);
929 }
930 
931 void StmtProfiler::VisitDesignatedInitExpr(const DesignatedInitExpr *S) {
932   VisitExpr(S);
933   ID.AddBoolean(S->usesGNUSyntax());
934   for (const DesignatedInitExpr::Designator &D : S->designators()) {
935     if (D.isFieldDesignator()) {
936       ID.AddInteger(0);
937       VisitName(D.getFieldName());
938       continue;
939     }
940 
941     if (D.isArrayDesignator()) {
942       ID.AddInteger(1);
943     } else {
944       assert(D.isArrayRangeDesignator());
945       ID.AddInteger(2);
946     }
947     ID.AddInteger(D.getFirstExprIndex());
948   }
949 }
950 
951 // Seems that if VisitInitListExpr() only works on the syntactic form of an
952 // InitListExpr, then a DesignatedInitUpdateExpr is not encountered.
953 void StmtProfiler::VisitDesignatedInitUpdateExpr(
954     const DesignatedInitUpdateExpr *S) {
955   llvm_unreachable("Unexpected DesignatedInitUpdateExpr in syntactic form of "
956                    "initializer");
957 }
958 
959 void StmtProfiler::VisitNoInitExpr(const NoInitExpr *S) {
960   llvm_unreachable("Unexpected NoInitExpr in syntactic form of initializer");
961 }
962 
963 void StmtProfiler::VisitImplicitValueInitExpr(const ImplicitValueInitExpr *S) {
964   VisitExpr(S);
965 }
966 
967 void StmtProfiler::VisitExtVectorElementExpr(const ExtVectorElementExpr *S) {
968   VisitExpr(S);
969   VisitName(&S->getAccessor());
970 }
971 
972 void StmtProfiler::VisitBlockExpr(const BlockExpr *S) {
973   VisitExpr(S);
974   VisitDecl(S->getBlockDecl());
975 }
976 
977 void StmtProfiler::VisitGenericSelectionExpr(const GenericSelectionExpr *S) {
978   VisitExpr(S);
979   for (unsigned i = 0; i != S->getNumAssocs(); ++i) {
980     QualType T = S->getAssocType(i);
981     if (T.isNull())
982       ID.AddPointer(nullptr);
983     else
984       VisitType(T);
985     VisitExpr(S->getAssocExpr(i));
986   }
987 }
988 
989 void StmtProfiler::VisitPseudoObjectExpr(const PseudoObjectExpr *S) {
990   VisitExpr(S);
991   for (PseudoObjectExpr::const_semantics_iterator
992          i = S->semantics_begin(), e = S->semantics_end(); i != e; ++i)
993     // Normally, we would not profile the source expressions of OVEs.
994     if (const OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(*i))
995       Visit(OVE->getSourceExpr());
996 }
997 
998 void StmtProfiler::VisitAtomicExpr(const AtomicExpr *S) {
999   VisitExpr(S);
1000   ID.AddInteger(S->getOp());
1001 }
1002 
1003 static Stmt::StmtClass DecodeOperatorCall(const CXXOperatorCallExpr *S,
1004                                           UnaryOperatorKind &UnaryOp,
1005                                           BinaryOperatorKind &BinaryOp) {
1006   switch (S->getOperator()) {
1007   case OO_None:
1008   case OO_New:
1009   case OO_Delete:
1010   case OO_Array_New:
1011   case OO_Array_Delete:
1012   case OO_Arrow:
1013   case OO_Call:
1014   case OO_Conditional:
1015   case OO_Coawait:
1016   case NUM_OVERLOADED_OPERATORS:
1017     llvm_unreachable("Invalid operator call kind");
1018 
1019   case OO_Plus:
1020     if (S->getNumArgs() == 1) {
1021       UnaryOp = UO_Plus;
1022       return Stmt::UnaryOperatorClass;
1023     }
1024 
1025     BinaryOp = BO_Add;
1026     return Stmt::BinaryOperatorClass;
1027 
1028   case OO_Minus:
1029     if (S->getNumArgs() == 1) {
1030       UnaryOp = UO_Minus;
1031       return Stmt::UnaryOperatorClass;
1032     }
1033 
1034     BinaryOp = BO_Sub;
1035     return Stmt::BinaryOperatorClass;
1036 
1037   case OO_Star:
1038     if (S->getNumArgs() == 1) {
1039       UnaryOp = UO_Deref;
1040       return Stmt::UnaryOperatorClass;
1041     }
1042 
1043     BinaryOp = BO_Mul;
1044     return Stmt::BinaryOperatorClass;
1045 
1046   case OO_Slash:
1047     BinaryOp = BO_Div;
1048     return Stmt::BinaryOperatorClass;
1049 
1050   case OO_Percent:
1051     BinaryOp = BO_Rem;
1052     return Stmt::BinaryOperatorClass;
1053 
1054   case OO_Caret:
1055     BinaryOp = BO_Xor;
1056     return Stmt::BinaryOperatorClass;
1057 
1058   case OO_Amp:
1059     if (S->getNumArgs() == 1) {
1060       UnaryOp = UO_AddrOf;
1061       return Stmt::UnaryOperatorClass;
1062     }
1063 
1064     BinaryOp = BO_And;
1065     return Stmt::BinaryOperatorClass;
1066 
1067   case OO_Pipe:
1068     BinaryOp = BO_Or;
1069     return Stmt::BinaryOperatorClass;
1070 
1071   case OO_Tilde:
1072     UnaryOp = UO_Not;
1073     return Stmt::UnaryOperatorClass;
1074 
1075   case OO_Exclaim:
1076     UnaryOp = UO_LNot;
1077     return Stmt::UnaryOperatorClass;
1078 
1079   case OO_Equal:
1080     BinaryOp = BO_Assign;
1081     return Stmt::BinaryOperatorClass;
1082 
1083   case OO_Less:
1084     BinaryOp = BO_LT;
1085     return Stmt::BinaryOperatorClass;
1086 
1087   case OO_Greater:
1088     BinaryOp = BO_GT;
1089     return Stmt::BinaryOperatorClass;
1090 
1091   case OO_PlusEqual:
1092     BinaryOp = BO_AddAssign;
1093     return Stmt::CompoundAssignOperatorClass;
1094 
1095   case OO_MinusEqual:
1096     BinaryOp = BO_SubAssign;
1097     return Stmt::CompoundAssignOperatorClass;
1098 
1099   case OO_StarEqual:
1100     BinaryOp = BO_MulAssign;
1101     return Stmt::CompoundAssignOperatorClass;
1102 
1103   case OO_SlashEqual:
1104     BinaryOp = BO_DivAssign;
1105     return Stmt::CompoundAssignOperatorClass;
1106 
1107   case OO_PercentEqual:
1108     BinaryOp = BO_RemAssign;
1109     return Stmt::CompoundAssignOperatorClass;
1110 
1111   case OO_CaretEqual:
1112     BinaryOp = BO_XorAssign;
1113     return Stmt::CompoundAssignOperatorClass;
1114 
1115   case OO_AmpEqual:
1116     BinaryOp = BO_AndAssign;
1117     return Stmt::CompoundAssignOperatorClass;
1118 
1119   case OO_PipeEqual:
1120     BinaryOp = BO_OrAssign;
1121     return Stmt::CompoundAssignOperatorClass;
1122 
1123   case OO_LessLess:
1124     BinaryOp = BO_Shl;
1125     return Stmt::BinaryOperatorClass;
1126 
1127   case OO_GreaterGreater:
1128     BinaryOp = BO_Shr;
1129     return Stmt::BinaryOperatorClass;
1130 
1131   case OO_LessLessEqual:
1132     BinaryOp = BO_ShlAssign;
1133     return Stmt::CompoundAssignOperatorClass;
1134 
1135   case OO_GreaterGreaterEqual:
1136     BinaryOp = BO_ShrAssign;
1137     return Stmt::CompoundAssignOperatorClass;
1138 
1139   case OO_EqualEqual:
1140     BinaryOp = BO_EQ;
1141     return Stmt::BinaryOperatorClass;
1142 
1143   case OO_ExclaimEqual:
1144     BinaryOp = BO_NE;
1145     return Stmt::BinaryOperatorClass;
1146 
1147   case OO_LessEqual:
1148     BinaryOp = BO_LE;
1149     return Stmt::BinaryOperatorClass;
1150 
1151   case OO_GreaterEqual:
1152     BinaryOp = BO_GE;
1153     return Stmt::BinaryOperatorClass;
1154 
1155   case OO_AmpAmp:
1156     BinaryOp = BO_LAnd;
1157     return Stmt::BinaryOperatorClass;
1158 
1159   case OO_PipePipe:
1160     BinaryOp = BO_LOr;
1161     return Stmt::BinaryOperatorClass;
1162 
1163   case OO_PlusPlus:
1164     UnaryOp = S->getNumArgs() == 1? UO_PreInc
1165                                   : UO_PostInc;
1166     return Stmt::UnaryOperatorClass;
1167 
1168   case OO_MinusMinus:
1169     UnaryOp = S->getNumArgs() == 1? UO_PreDec
1170                                   : UO_PostDec;
1171     return Stmt::UnaryOperatorClass;
1172 
1173   case OO_Comma:
1174     BinaryOp = BO_Comma;
1175     return Stmt::BinaryOperatorClass;
1176 
1177   case OO_ArrowStar:
1178     BinaryOp = BO_PtrMemI;
1179     return Stmt::BinaryOperatorClass;
1180 
1181   case OO_Subscript:
1182     return Stmt::ArraySubscriptExprClass;
1183   }
1184 
1185   llvm_unreachable("Invalid overloaded operator expression");
1186 }
1187 
1188 void StmtProfiler::VisitCXXOperatorCallExpr(const CXXOperatorCallExpr *S) {
1189   if (S->isTypeDependent()) {
1190     // Type-dependent operator calls are profiled like their underlying
1191     // syntactic operator.
1192     UnaryOperatorKind UnaryOp = UO_Extension;
1193     BinaryOperatorKind BinaryOp = BO_Comma;
1194     Stmt::StmtClass SC = DecodeOperatorCall(S, UnaryOp, BinaryOp);
1195 
1196     ID.AddInteger(SC);
1197     for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
1198       Visit(S->getArg(I));
1199     if (SC == Stmt::UnaryOperatorClass)
1200       ID.AddInteger(UnaryOp);
1201     else if (SC == Stmt::BinaryOperatorClass ||
1202              SC == Stmt::CompoundAssignOperatorClass)
1203       ID.AddInteger(BinaryOp);
1204     else
1205       assert(SC == Stmt::ArraySubscriptExprClass);
1206 
1207     return;
1208   }
1209 
1210   VisitCallExpr(S);
1211   ID.AddInteger(S->getOperator());
1212 }
1213 
1214 void StmtProfiler::VisitCXXMemberCallExpr(const CXXMemberCallExpr *S) {
1215   VisitCallExpr(S);
1216 }
1217 
1218 void StmtProfiler::VisitCUDAKernelCallExpr(const CUDAKernelCallExpr *S) {
1219   VisitCallExpr(S);
1220 }
1221 
1222 void StmtProfiler::VisitAsTypeExpr(const AsTypeExpr *S) {
1223   VisitExpr(S);
1224 }
1225 
1226 void StmtProfiler::VisitCXXNamedCastExpr(const CXXNamedCastExpr *S) {
1227   VisitExplicitCastExpr(S);
1228 }
1229 
1230 void StmtProfiler::VisitCXXStaticCastExpr(const CXXStaticCastExpr *S) {
1231   VisitCXXNamedCastExpr(S);
1232 }
1233 
1234 void StmtProfiler::VisitCXXDynamicCastExpr(const CXXDynamicCastExpr *S) {
1235   VisitCXXNamedCastExpr(S);
1236 }
1237 
1238 void
1239 StmtProfiler::VisitCXXReinterpretCastExpr(const CXXReinterpretCastExpr *S) {
1240   VisitCXXNamedCastExpr(S);
1241 }
1242 
1243 void StmtProfiler::VisitCXXConstCastExpr(const CXXConstCastExpr *S) {
1244   VisitCXXNamedCastExpr(S);
1245 }
1246 
1247 void StmtProfiler::VisitUserDefinedLiteral(const UserDefinedLiteral *S) {
1248   VisitCallExpr(S);
1249 }
1250 
1251 void StmtProfiler::VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *S) {
1252   VisitExpr(S);
1253   ID.AddBoolean(S->getValue());
1254 }
1255 
1256 void StmtProfiler::VisitCXXNullPtrLiteralExpr(const CXXNullPtrLiteralExpr *S) {
1257   VisitExpr(S);
1258 }
1259 
1260 void StmtProfiler::VisitCXXStdInitializerListExpr(
1261     const CXXStdInitializerListExpr *S) {
1262   VisitExpr(S);
1263 }
1264 
1265 void StmtProfiler::VisitCXXTypeidExpr(const CXXTypeidExpr *S) {
1266   VisitExpr(S);
1267   if (S->isTypeOperand())
1268     VisitType(S->getTypeOperandSourceInfo()->getType());
1269 }
1270 
1271 void StmtProfiler::VisitCXXUuidofExpr(const CXXUuidofExpr *S) {
1272   VisitExpr(S);
1273   if (S->isTypeOperand())
1274     VisitType(S->getTypeOperandSourceInfo()->getType());
1275 }
1276 
1277 void StmtProfiler::VisitMSPropertyRefExpr(const MSPropertyRefExpr *S) {
1278   VisitExpr(S);
1279   VisitDecl(S->getPropertyDecl());
1280 }
1281 
1282 void StmtProfiler::VisitMSPropertySubscriptExpr(
1283     const MSPropertySubscriptExpr *S) {
1284   VisitExpr(S);
1285 }
1286 
1287 void StmtProfiler::VisitCXXThisExpr(const CXXThisExpr *S) {
1288   VisitExpr(S);
1289   ID.AddBoolean(S->isImplicit());
1290 }
1291 
1292 void StmtProfiler::VisitCXXThrowExpr(const CXXThrowExpr *S) {
1293   VisitExpr(S);
1294 }
1295 
1296 void StmtProfiler::VisitCXXDefaultArgExpr(const CXXDefaultArgExpr *S) {
1297   VisitExpr(S);
1298   VisitDecl(S->getParam());
1299 }
1300 
1301 void StmtProfiler::VisitCXXDefaultInitExpr(const CXXDefaultInitExpr *S) {
1302   VisitExpr(S);
1303   VisitDecl(S->getField());
1304 }
1305 
1306 void StmtProfiler::VisitCXXBindTemporaryExpr(const CXXBindTemporaryExpr *S) {
1307   VisitExpr(S);
1308   VisitDecl(
1309          const_cast<CXXDestructorDecl *>(S->getTemporary()->getDestructor()));
1310 }
1311 
1312 void StmtProfiler::VisitCXXConstructExpr(const CXXConstructExpr *S) {
1313   VisitExpr(S);
1314   VisitDecl(S->getConstructor());
1315   ID.AddBoolean(S->isElidable());
1316 }
1317 
1318 void StmtProfiler::VisitCXXInheritedCtorInitExpr(
1319     const CXXInheritedCtorInitExpr *S) {
1320   VisitExpr(S);
1321   VisitDecl(S->getConstructor());
1322 }
1323 
1324 void StmtProfiler::VisitCXXFunctionalCastExpr(const CXXFunctionalCastExpr *S) {
1325   VisitExplicitCastExpr(S);
1326 }
1327 
1328 void
1329 StmtProfiler::VisitCXXTemporaryObjectExpr(const CXXTemporaryObjectExpr *S) {
1330   VisitCXXConstructExpr(S);
1331 }
1332 
1333 void
1334 StmtProfiler::VisitLambdaExpr(const LambdaExpr *S) {
1335   VisitExpr(S);
1336   for (LambdaExpr::capture_iterator C = S->explicit_capture_begin(),
1337                                  CEnd = S->explicit_capture_end();
1338        C != CEnd; ++C) {
1339     ID.AddInteger(C->getCaptureKind());
1340     switch (C->getCaptureKind()) {
1341     case LCK_StarThis:
1342     case LCK_This:
1343       break;
1344     case LCK_ByRef:
1345     case LCK_ByCopy:
1346       VisitDecl(C->getCapturedVar());
1347       ID.AddBoolean(C->isPackExpansion());
1348       break;
1349     case LCK_VLAType:
1350       llvm_unreachable("VLA type in explicit captures.");
1351     }
1352   }
1353   // Note: If we actually needed to be able to match lambda
1354   // expressions, we would have to consider parameters and return type
1355   // here, among other things.
1356   VisitStmt(S->getBody());
1357 }
1358 
1359 void
1360 StmtProfiler::VisitCXXScalarValueInitExpr(const CXXScalarValueInitExpr *S) {
1361   VisitExpr(S);
1362 }
1363 
1364 void StmtProfiler::VisitCXXDeleteExpr(const CXXDeleteExpr *S) {
1365   VisitExpr(S);
1366   ID.AddBoolean(S->isGlobalDelete());
1367   ID.AddBoolean(S->isArrayForm());
1368   VisitDecl(S->getOperatorDelete());
1369 }
1370 
1371 void StmtProfiler::VisitCXXNewExpr(const CXXNewExpr *S) {
1372   VisitExpr(S);
1373   VisitType(S->getAllocatedType());
1374   VisitDecl(S->getOperatorNew());
1375   VisitDecl(S->getOperatorDelete());
1376   ID.AddBoolean(S->isArray());
1377   ID.AddInteger(S->getNumPlacementArgs());
1378   ID.AddBoolean(S->isGlobalNew());
1379   ID.AddBoolean(S->isParenTypeId());
1380   ID.AddInteger(S->getInitializationStyle());
1381 }
1382 
1383 void
1384 StmtProfiler::VisitCXXPseudoDestructorExpr(const CXXPseudoDestructorExpr *S) {
1385   VisitExpr(S);
1386   ID.AddBoolean(S->isArrow());
1387   VisitNestedNameSpecifier(S->getQualifier());
1388   ID.AddBoolean(S->getScopeTypeInfo() != nullptr);
1389   if (S->getScopeTypeInfo())
1390     VisitType(S->getScopeTypeInfo()->getType());
1391   ID.AddBoolean(S->getDestroyedTypeInfo() != nullptr);
1392   if (S->getDestroyedTypeInfo())
1393     VisitType(S->getDestroyedType());
1394   else
1395     ID.AddPointer(S->getDestroyedTypeIdentifier());
1396 }
1397 
1398 void StmtProfiler::VisitOverloadExpr(const OverloadExpr *S) {
1399   VisitExpr(S);
1400   VisitNestedNameSpecifier(S->getQualifier());
1401   VisitName(S->getName());
1402   ID.AddBoolean(S->hasExplicitTemplateArgs());
1403   if (S->hasExplicitTemplateArgs())
1404     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1405 }
1406 
1407 void
1408 StmtProfiler::VisitUnresolvedLookupExpr(const UnresolvedLookupExpr *S) {
1409   VisitOverloadExpr(S);
1410 }
1411 
1412 void StmtProfiler::VisitTypeTraitExpr(const TypeTraitExpr *S) {
1413   VisitExpr(S);
1414   ID.AddInteger(S->getTrait());
1415   ID.AddInteger(S->getNumArgs());
1416   for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
1417     VisitType(S->getArg(I)->getType());
1418 }
1419 
1420 void StmtProfiler::VisitArrayTypeTraitExpr(const ArrayTypeTraitExpr *S) {
1421   VisitExpr(S);
1422   ID.AddInteger(S->getTrait());
1423   VisitType(S->getQueriedType());
1424 }
1425 
1426 void StmtProfiler::VisitExpressionTraitExpr(const ExpressionTraitExpr *S) {
1427   VisitExpr(S);
1428   ID.AddInteger(S->getTrait());
1429   VisitExpr(S->getQueriedExpression());
1430 }
1431 
1432 void StmtProfiler::VisitDependentScopeDeclRefExpr(
1433     const DependentScopeDeclRefExpr *S) {
1434   VisitExpr(S);
1435   VisitName(S->getDeclName());
1436   VisitNestedNameSpecifier(S->getQualifier());
1437   ID.AddBoolean(S->hasExplicitTemplateArgs());
1438   if (S->hasExplicitTemplateArgs())
1439     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1440 }
1441 
1442 void StmtProfiler::VisitExprWithCleanups(const ExprWithCleanups *S) {
1443   VisitExpr(S);
1444 }
1445 
1446 void StmtProfiler::VisitCXXUnresolvedConstructExpr(
1447     const CXXUnresolvedConstructExpr *S) {
1448   VisitExpr(S);
1449   VisitType(S->getTypeAsWritten());
1450 }
1451 
1452 void StmtProfiler::VisitCXXDependentScopeMemberExpr(
1453     const CXXDependentScopeMemberExpr *S) {
1454   ID.AddBoolean(S->isImplicitAccess());
1455   if (!S->isImplicitAccess()) {
1456     VisitExpr(S);
1457     ID.AddBoolean(S->isArrow());
1458   }
1459   VisitNestedNameSpecifier(S->getQualifier());
1460   VisitName(S->getMember());
1461   ID.AddBoolean(S->hasExplicitTemplateArgs());
1462   if (S->hasExplicitTemplateArgs())
1463     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1464 }
1465 
1466 void StmtProfiler::VisitUnresolvedMemberExpr(const UnresolvedMemberExpr *S) {
1467   ID.AddBoolean(S->isImplicitAccess());
1468   if (!S->isImplicitAccess()) {
1469     VisitExpr(S);
1470     ID.AddBoolean(S->isArrow());
1471   }
1472   VisitNestedNameSpecifier(S->getQualifier());
1473   VisitName(S->getMemberName());
1474   ID.AddBoolean(S->hasExplicitTemplateArgs());
1475   if (S->hasExplicitTemplateArgs())
1476     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1477 }
1478 
1479 void StmtProfiler::VisitCXXNoexceptExpr(const CXXNoexceptExpr *S) {
1480   VisitExpr(S);
1481 }
1482 
1483 void StmtProfiler::VisitPackExpansionExpr(const PackExpansionExpr *S) {
1484   VisitExpr(S);
1485 }
1486 
1487 void StmtProfiler::VisitSizeOfPackExpr(const SizeOfPackExpr *S) {
1488   VisitExpr(S);
1489   VisitDecl(S->getPack());
1490   if (S->isPartiallySubstituted()) {
1491     auto Args = S->getPartialArguments();
1492     ID.AddInteger(Args.size());
1493     for (const auto &TA : Args)
1494       VisitTemplateArgument(TA);
1495   } else {
1496     ID.AddInteger(0);
1497   }
1498 }
1499 
1500 void StmtProfiler::VisitSubstNonTypeTemplateParmPackExpr(
1501     const SubstNonTypeTemplateParmPackExpr *S) {
1502   VisitExpr(S);
1503   VisitDecl(S->getParameterPack());
1504   VisitTemplateArgument(S->getArgumentPack());
1505 }
1506 
1507 void StmtProfiler::VisitSubstNonTypeTemplateParmExpr(
1508     const SubstNonTypeTemplateParmExpr *E) {
1509   // Profile exactly as the replacement expression.
1510   Visit(E->getReplacement());
1511 }
1512 
1513 void StmtProfiler::VisitFunctionParmPackExpr(const FunctionParmPackExpr *S) {
1514   VisitExpr(S);
1515   VisitDecl(S->getParameterPack());
1516   ID.AddInteger(S->getNumExpansions());
1517   for (FunctionParmPackExpr::iterator I = S->begin(), E = S->end(); I != E; ++I)
1518     VisitDecl(*I);
1519 }
1520 
1521 void StmtProfiler::VisitMaterializeTemporaryExpr(
1522                                            const MaterializeTemporaryExpr *S) {
1523   VisitExpr(S);
1524 }
1525 
1526 void StmtProfiler::VisitCXXFoldExpr(const CXXFoldExpr *S) {
1527   VisitExpr(S);
1528   ID.AddInteger(S->getOperator());
1529 }
1530 
1531 void StmtProfiler::VisitCoroutineBodyStmt(const CoroutineBodyStmt *S) {
1532   VisitStmt(S);
1533 }
1534 
1535 void StmtProfiler::VisitCoreturnStmt(const CoreturnStmt *S) {
1536   VisitStmt(S);
1537 }
1538 
1539 void StmtProfiler::VisitCoawaitExpr(const CoawaitExpr *S) {
1540   VisitExpr(S);
1541 }
1542 
1543 void StmtProfiler::VisitCoyieldExpr(const CoyieldExpr *S) {
1544   VisitExpr(S);
1545 }
1546 
1547 void StmtProfiler::VisitOpaqueValueExpr(const OpaqueValueExpr *E) {
1548   VisitExpr(E);
1549 }
1550 
1551 void StmtProfiler::VisitTypoExpr(const TypoExpr *E) {
1552   VisitExpr(E);
1553 }
1554 
1555 void StmtProfiler::VisitObjCStringLiteral(const ObjCStringLiteral *S) {
1556   VisitExpr(S);
1557 }
1558 
1559 void StmtProfiler::VisitObjCBoxedExpr(const ObjCBoxedExpr *E) {
1560   VisitExpr(E);
1561 }
1562 
1563 void StmtProfiler::VisitObjCArrayLiteral(const ObjCArrayLiteral *E) {
1564   VisitExpr(E);
1565 }
1566 
1567 void StmtProfiler::VisitObjCDictionaryLiteral(const ObjCDictionaryLiteral *E) {
1568   VisitExpr(E);
1569 }
1570 
1571 void StmtProfiler::VisitObjCEncodeExpr(const ObjCEncodeExpr *S) {
1572   VisitExpr(S);
1573   VisitType(S->getEncodedType());
1574 }
1575 
1576 void StmtProfiler::VisitObjCSelectorExpr(const ObjCSelectorExpr *S) {
1577   VisitExpr(S);
1578   VisitName(S->getSelector());
1579 }
1580 
1581 void StmtProfiler::VisitObjCProtocolExpr(const ObjCProtocolExpr *S) {
1582   VisitExpr(S);
1583   VisitDecl(S->getProtocol());
1584 }
1585 
1586 void StmtProfiler::VisitObjCIvarRefExpr(const ObjCIvarRefExpr *S) {
1587   VisitExpr(S);
1588   VisitDecl(S->getDecl());
1589   ID.AddBoolean(S->isArrow());
1590   ID.AddBoolean(S->isFreeIvar());
1591 }
1592 
1593 void StmtProfiler::VisitObjCPropertyRefExpr(const ObjCPropertyRefExpr *S) {
1594   VisitExpr(S);
1595   if (S->isImplicitProperty()) {
1596     VisitDecl(S->getImplicitPropertyGetter());
1597     VisitDecl(S->getImplicitPropertySetter());
1598   } else {
1599     VisitDecl(S->getExplicitProperty());
1600   }
1601   if (S->isSuperReceiver()) {
1602     ID.AddBoolean(S->isSuperReceiver());
1603     VisitType(S->getSuperReceiverType());
1604   }
1605 }
1606 
1607 void StmtProfiler::VisitObjCSubscriptRefExpr(const ObjCSubscriptRefExpr *S) {
1608   VisitExpr(S);
1609   VisitDecl(S->getAtIndexMethodDecl());
1610   VisitDecl(S->setAtIndexMethodDecl());
1611 }
1612 
1613 void StmtProfiler::VisitObjCMessageExpr(const ObjCMessageExpr *S) {
1614   VisitExpr(S);
1615   VisitName(S->getSelector());
1616   VisitDecl(S->getMethodDecl());
1617 }
1618 
1619 void StmtProfiler::VisitObjCIsaExpr(const ObjCIsaExpr *S) {
1620   VisitExpr(S);
1621   ID.AddBoolean(S->isArrow());
1622 }
1623 
1624 void StmtProfiler::VisitObjCBoolLiteralExpr(const ObjCBoolLiteralExpr *S) {
1625   VisitExpr(S);
1626   ID.AddBoolean(S->getValue());
1627 }
1628 
1629 void StmtProfiler::VisitObjCIndirectCopyRestoreExpr(
1630     const ObjCIndirectCopyRestoreExpr *S) {
1631   VisitExpr(S);
1632   ID.AddBoolean(S->shouldCopy());
1633 }
1634 
1635 void StmtProfiler::VisitObjCBridgedCastExpr(const ObjCBridgedCastExpr *S) {
1636   VisitExplicitCastExpr(S);
1637   ID.AddBoolean(S->getBridgeKind());
1638 }
1639 
1640 void StmtProfiler::VisitObjCAvailabilityCheckExpr(
1641     const ObjCAvailabilityCheckExpr *S) {
1642   VisitExpr(S);
1643 }
1644 
1645 void StmtProfiler::VisitDecl(const Decl *D) {
1646   ID.AddInteger(D? D->getKind() : 0);
1647 
1648   if (Canonical && D) {
1649     if (const NonTypeTemplateParmDecl *NTTP =
1650           dyn_cast<NonTypeTemplateParmDecl>(D)) {
1651       ID.AddInteger(NTTP->getDepth());
1652       ID.AddInteger(NTTP->getIndex());
1653       ID.AddBoolean(NTTP->isParameterPack());
1654       VisitType(NTTP->getType());
1655       return;
1656     }
1657 
1658     if (const ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) {
1659       // The Itanium C++ ABI uses the type, scope depth, and scope
1660       // index of a parameter when mangling expressions that involve
1661       // function parameters, so we will use the parameter's type for
1662       // establishing function parameter identity. That way, our
1663       // definition of "equivalent" (per C++ [temp.over.link]) is at
1664       // least as strong as the definition of "equivalent" used for
1665       // name mangling.
1666       VisitType(Parm->getType());
1667       ID.AddInteger(Parm->getFunctionScopeDepth());
1668       ID.AddInteger(Parm->getFunctionScopeIndex());
1669       return;
1670     }
1671 
1672     if (const TemplateTypeParmDecl *TTP =
1673           dyn_cast<TemplateTypeParmDecl>(D)) {
1674       ID.AddInteger(TTP->getDepth());
1675       ID.AddInteger(TTP->getIndex());
1676       ID.AddBoolean(TTP->isParameterPack());
1677       return;
1678     }
1679 
1680     if (const TemplateTemplateParmDecl *TTP =
1681           dyn_cast<TemplateTemplateParmDecl>(D)) {
1682       ID.AddInteger(TTP->getDepth());
1683       ID.AddInteger(TTP->getIndex());
1684       ID.AddBoolean(TTP->isParameterPack());
1685       return;
1686     }
1687   }
1688 
1689   ID.AddPointer(D? D->getCanonicalDecl() : nullptr);
1690 }
1691 
1692 void StmtProfiler::VisitType(QualType T) {
1693   if (Canonical)
1694     T = Context.getCanonicalType(T);
1695 
1696   ID.AddPointer(T.getAsOpaquePtr());
1697 }
1698 
1699 void StmtProfiler::VisitName(DeclarationName Name) {
1700   ID.AddPointer(Name.getAsOpaquePtr());
1701 }
1702 
1703 void StmtProfiler::VisitNestedNameSpecifier(NestedNameSpecifier *NNS) {
1704   if (Canonical)
1705     NNS = Context.getCanonicalNestedNameSpecifier(NNS);
1706   ID.AddPointer(NNS);
1707 }
1708 
1709 void StmtProfiler::VisitTemplateName(TemplateName Name) {
1710   if (Canonical)
1711     Name = Context.getCanonicalTemplateName(Name);
1712 
1713   Name.Profile(ID);
1714 }
1715 
1716 void StmtProfiler::VisitTemplateArguments(const TemplateArgumentLoc *Args,
1717                                           unsigned NumArgs) {
1718   ID.AddInteger(NumArgs);
1719   for (unsigned I = 0; I != NumArgs; ++I)
1720     VisitTemplateArgument(Args[I].getArgument());
1721 }
1722 
1723 void StmtProfiler::VisitTemplateArgument(const TemplateArgument &Arg) {
1724   // Mostly repetitive with TemplateArgument::Profile!
1725   ID.AddInteger(Arg.getKind());
1726   switch (Arg.getKind()) {
1727   case TemplateArgument::Null:
1728     break;
1729 
1730   case TemplateArgument::Type:
1731     VisitType(Arg.getAsType());
1732     break;
1733 
1734   case TemplateArgument::Template:
1735   case TemplateArgument::TemplateExpansion:
1736     VisitTemplateName(Arg.getAsTemplateOrTemplatePattern());
1737     break;
1738 
1739   case TemplateArgument::Declaration:
1740     VisitDecl(Arg.getAsDecl());
1741     break;
1742 
1743   case TemplateArgument::NullPtr:
1744     VisitType(Arg.getNullPtrType());
1745     break;
1746 
1747   case TemplateArgument::Integral:
1748     Arg.getAsIntegral().Profile(ID);
1749     VisitType(Arg.getIntegralType());
1750     break;
1751 
1752   case TemplateArgument::Expression:
1753     Visit(Arg.getAsExpr());
1754     break;
1755 
1756   case TemplateArgument::Pack:
1757     for (const auto &P : Arg.pack_elements())
1758       VisitTemplateArgument(P);
1759     break;
1760   }
1761 }
1762 
1763 void Stmt::Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
1764                    bool Canonical) const {
1765   StmtProfiler Profiler(ID, Context, Canonical);
1766   Profiler.Visit(this);
1767 }
1768