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 }
533 
534 void
535 StmtProfiler::VisitOMPExecutableDirective(const OMPExecutableDirective *S) {
536   VisitStmt(S);
537   OMPClauseProfiler P(this);
538   ArrayRef<OMPClause *> Clauses = S->clauses();
539   for (ArrayRef<OMPClause *>::iterator I = Clauses.begin(), E = Clauses.end();
540        I != E; ++I)
541     if (*I)
542       P.Visit(*I);
543 }
544 
545 void StmtProfiler::VisitOMPLoopDirective(const OMPLoopDirective *S) {
546   VisitOMPExecutableDirective(S);
547 }
548 
549 void StmtProfiler::VisitOMPParallelDirective(const OMPParallelDirective *S) {
550   VisitOMPExecutableDirective(S);
551 }
552 
553 void StmtProfiler::VisitOMPSimdDirective(const OMPSimdDirective *S) {
554   VisitOMPLoopDirective(S);
555 }
556 
557 void StmtProfiler::VisitOMPForDirective(const OMPForDirective *S) {
558   VisitOMPLoopDirective(S);
559 }
560 
561 void StmtProfiler::VisitOMPForSimdDirective(const OMPForSimdDirective *S) {
562   VisitOMPLoopDirective(S);
563 }
564 
565 void StmtProfiler::VisitOMPSectionsDirective(const OMPSectionsDirective *S) {
566   VisitOMPExecutableDirective(S);
567 }
568 
569 void StmtProfiler::VisitOMPSectionDirective(const OMPSectionDirective *S) {
570   VisitOMPExecutableDirective(S);
571 }
572 
573 void StmtProfiler::VisitOMPSingleDirective(const OMPSingleDirective *S) {
574   VisitOMPExecutableDirective(S);
575 }
576 
577 void StmtProfiler::VisitOMPMasterDirective(const OMPMasterDirective *S) {
578   VisitOMPExecutableDirective(S);
579 }
580 
581 void StmtProfiler::VisitOMPCriticalDirective(const OMPCriticalDirective *S) {
582   VisitOMPExecutableDirective(S);
583   VisitName(S->getDirectiveName().getName());
584 }
585 
586 void
587 StmtProfiler::VisitOMPParallelForDirective(const OMPParallelForDirective *S) {
588   VisitOMPLoopDirective(S);
589 }
590 
591 void StmtProfiler::VisitOMPParallelForSimdDirective(
592     const OMPParallelForSimdDirective *S) {
593   VisitOMPLoopDirective(S);
594 }
595 
596 void StmtProfiler::VisitOMPParallelSectionsDirective(
597     const OMPParallelSectionsDirective *S) {
598   VisitOMPExecutableDirective(S);
599 }
600 
601 void StmtProfiler::VisitOMPTaskDirective(const OMPTaskDirective *S) {
602   VisitOMPExecutableDirective(S);
603 }
604 
605 void StmtProfiler::VisitOMPTaskyieldDirective(const OMPTaskyieldDirective *S) {
606   VisitOMPExecutableDirective(S);
607 }
608 
609 void StmtProfiler::VisitOMPBarrierDirective(const OMPBarrierDirective *S) {
610   VisitOMPExecutableDirective(S);
611 }
612 
613 void StmtProfiler::VisitOMPTaskwaitDirective(const OMPTaskwaitDirective *S) {
614   VisitOMPExecutableDirective(S);
615 }
616 
617 void StmtProfiler::VisitOMPTaskgroupDirective(const OMPTaskgroupDirective *S) {
618   VisitOMPExecutableDirective(S);
619 }
620 
621 void StmtProfiler::VisitOMPFlushDirective(const OMPFlushDirective *S) {
622   VisitOMPExecutableDirective(S);
623 }
624 
625 void StmtProfiler::VisitOMPOrderedDirective(const OMPOrderedDirective *S) {
626   VisitOMPExecutableDirective(S);
627 }
628 
629 void StmtProfiler::VisitOMPAtomicDirective(const OMPAtomicDirective *S) {
630   VisitOMPExecutableDirective(S);
631 }
632 
633 void StmtProfiler::VisitOMPTargetDirective(const OMPTargetDirective *S) {
634   VisitOMPExecutableDirective(S);
635 }
636 
637 void StmtProfiler::VisitOMPTargetDataDirective(const OMPTargetDataDirective *S) {
638   VisitOMPExecutableDirective(S);
639 }
640 
641 void StmtProfiler::VisitOMPTargetEnterDataDirective(
642     const OMPTargetEnterDataDirective *S) {
643   VisitOMPExecutableDirective(S);
644 }
645 
646 void StmtProfiler::VisitOMPTargetExitDataDirective(
647     const OMPTargetExitDataDirective *S) {
648   VisitOMPExecutableDirective(S);
649 }
650 
651 void StmtProfiler::VisitOMPTargetParallelDirective(
652     const OMPTargetParallelDirective *S) {
653   VisitOMPExecutableDirective(S);
654 }
655 
656 void StmtProfiler::VisitOMPTargetParallelForDirective(
657     const OMPTargetParallelForDirective *S) {
658   VisitOMPExecutableDirective(S);
659 }
660 
661 void StmtProfiler::VisitOMPTeamsDirective(const OMPTeamsDirective *S) {
662   VisitOMPExecutableDirective(S);
663 }
664 
665 void StmtProfiler::VisitOMPCancellationPointDirective(
666     const OMPCancellationPointDirective *S) {
667   VisitOMPExecutableDirective(S);
668 }
669 
670 void StmtProfiler::VisitOMPCancelDirective(const OMPCancelDirective *S) {
671   VisitOMPExecutableDirective(S);
672 }
673 
674 void StmtProfiler::VisitOMPTaskLoopDirective(const OMPTaskLoopDirective *S) {
675   VisitOMPLoopDirective(S);
676 }
677 
678 void StmtProfiler::VisitOMPTaskLoopSimdDirective(
679     const OMPTaskLoopSimdDirective *S) {
680   VisitOMPLoopDirective(S);
681 }
682 
683 void StmtProfiler::VisitOMPDistributeDirective(
684     const OMPDistributeDirective *S) {
685   VisitOMPLoopDirective(S);
686 }
687 
688 void OMPClauseProfiler::VisitOMPDistScheduleClause(
689     const OMPDistScheduleClause *C) {
690   VistOMPClauseWithPreInit(C);
691   if (auto *S = C->getChunkSize())
692     Profiler->VisitStmt(S);
693 }
694 
695 void OMPClauseProfiler::VisitOMPDefaultmapClause(const OMPDefaultmapClause *) {}
696 
697 void StmtProfiler::VisitOMPTargetUpdateDirective(
698     const OMPTargetUpdateDirective *S) {
699   VisitOMPExecutableDirective(S);
700 }
701 
702 void StmtProfiler::VisitOMPDistributeParallelForDirective(
703     const OMPDistributeParallelForDirective *S) {
704   VisitOMPLoopDirective(S);
705 }
706 
707 void StmtProfiler::VisitExpr(const Expr *S) {
708   VisitStmt(S);
709 }
710 
711 void StmtProfiler::VisitDeclRefExpr(const DeclRefExpr *S) {
712   VisitExpr(S);
713   if (!Canonical)
714     VisitNestedNameSpecifier(S->getQualifier());
715   VisitDecl(S->getDecl());
716   if (!Canonical)
717     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
718 }
719 
720 void StmtProfiler::VisitPredefinedExpr(const PredefinedExpr *S) {
721   VisitExpr(S);
722   ID.AddInteger(S->getIdentType());
723 }
724 
725 void StmtProfiler::VisitIntegerLiteral(const IntegerLiteral *S) {
726   VisitExpr(S);
727   S->getValue().Profile(ID);
728   ID.AddInteger(S->getType()->castAs<BuiltinType>()->getKind());
729 }
730 
731 void StmtProfiler::VisitCharacterLiteral(const CharacterLiteral *S) {
732   VisitExpr(S);
733   ID.AddInteger(S->getKind());
734   ID.AddInteger(S->getValue());
735 }
736 
737 void StmtProfiler::VisitFloatingLiteral(const FloatingLiteral *S) {
738   VisitExpr(S);
739   S->getValue().Profile(ID);
740   ID.AddBoolean(S->isExact());
741   ID.AddInteger(S->getType()->castAs<BuiltinType>()->getKind());
742 }
743 
744 void StmtProfiler::VisitImaginaryLiteral(const ImaginaryLiteral *S) {
745   VisitExpr(S);
746 }
747 
748 void StmtProfiler::VisitStringLiteral(const StringLiteral *S) {
749   VisitExpr(S);
750   ID.AddString(S->getBytes());
751   ID.AddInteger(S->getKind());
752 }
753 
754 void StmtProfiler::VisitParenExpr(const ParenExpr *S) {
755   VisitExpr(S);
756 }
757 
758 void StmtProfiler::VisitParenListExpr(const ParenListExpr *S) {
759   VisitExpr(S);
760 }
761 
762 void StmtProfiler::VisitUnaryOperator(const UnaryOperator *S) {
763   VisitExpr(S);
764   ID.AddInteger(S->getOpcode());
765 }
766 
767 void StmtProfiler::VisitOffsetOfExpr(const OffsetOfExpr *S) {
768   VisitType(S->getTypeSourceInfo()->getType());
769   unsigned n = S->getNumComponents();
770   for (unsigned i = 0; i < n; ++i) {
771     const OffsetOfNode &ON = S->getComponent(i);
772     ID.AddInteger(ON.getKind());
773     switch (ON.getKind()) {
774     case OffsetOfNode::Array:
775       // Expressions handled below.
776       break;
777 
778     case OffsetOfNode::Field:
779       VisitDecl(ON.getField());
780       break;
781 
782     case OffsetOfNode::Identifier:
783       ID.AddPointer(ON.getFieldName());
784       break;
785 
786     case OffsetOfNode::Base:
787       // These nodes are implicit, and therefore don't need profiling.
788       break;
789     }
790   }
791 
792   VisitExpr(S);
793 }
794 
795 void
796 StmtProfiler::VisitUnaryExprOrTypeTraitExpr(const UnaryExprOrTypeTraitExpr *S) {
797   VisitExpr(S);
798   ID.AddInteger(S->getKind());
799   if (S->isArgumentType())
800     VisitType(S->getArgumentType());
801 }
802 
803 void StmtProfiler::VisitArraySubscriptExpr(const ArraySubscriptExpr *S) {
804   VisitExpr(S);
805 }
806 
807 void StmtProfiler::VisitOMPArraySectionExpr(const OMPArraySectionExpr *S) {
808   VisitExpr(S);
809 }
810 
811 void StmtProfiler::VisitCallExpr(const CallExpr *S) {
812   VisitExpr(S);
813 }
814 
815 void StmtProfiler::VisitMemberExpr(const MemberExpr *S) {
816   VisitExpr(S);
817   VisitDecl(S->getMemberDecl());
818   if (!Canonical)
819     VisitNestedNameSpecifier(S->getQualifier());
820   ID.AddBoolean(S->isArrow());
821 }
822 
823 void StmtProfiler::VisitCompoundLiteralExpr(const CompoundLiteralExpr *S) {
824   VisitExpr(S);
825   ID.AddBoolean(S->isFileScope());
826 }
827 
828 void StmtProfiler::VisitCastExpr(const CastExpr *S) {
829   VisitExpr(S);
830 }
831 
832 void StmtProfiler::VisitImplicitCastExpr(const ImplicitCastExpr *S) {
833   VisitCastExpr(S);
834   ID.AddInteger(S->getValueKind());
835 }
836 
837 void StmtProfiler::VisitExplicitCastExpr(const ExplicitCastExpr *S) {
838   VisitCastExpr(S);
839   VisitType(S->getTypeAsWritten());
840 }
841 
842 void StmtProfiler::VisitCStyleCastExpr(const CStyleCastExpr *S) {
843   VisitExplicitCastExpr(S);
844 }
845 
846 void StmtProfiler::VisitBinaryOperator(const BinaryOperator *S) {
847   VisitExpr(S);
848   ID.AddInteger(S->getOpcode());
849 }
850 
851 void
852 StmtProfiler::VisitCompoundAssignOperator(const CompoundAssignOperator *S) {
853   VisitBinaryOperator(S);
854 }
855 
856 void StmtProfiler::VisitConditionalOperator(const ConditionalOperator *S) {
857   VisitExpr(S);
858 }
859 
860 void StmtProfiler::VisitBinaryConditionalOperator(
861     const BinaryConditionalOperator *S) {
862   VisitExpr(S);
863 }
864 
865 void StmtProfiler::VisitAddrLabelExpr(const AddrLabelExpr *S) {
866   VisitExpr(S);
867   VisitDecl(S->getLabel());
868 }
869 
870 void StmtProfiler::VisitStmtExpr(const StmtExpr *S) {
871   VisitExpr(S);
872 }
873 
874 void StmtProfiler::VisitShuffleVectorExpr(const ShuffleVectorExpr *S) {
875   VisitExpr(S);
876 }
877 
878 void StmtProfiler::VisitConvertVectorExpr(const ConvertVectorExpr *S) {
879   VisitExpr(S);
880 }
881 
882 void StmtProfiler::VisitChooseExpr(const ChooseExpr *S) {
883   VisitExpr(S);
884 }
885 
886 void StmtProfiler::VisitGNUNullExpr(const GNUNullExpr *S) {
887   VisitExpr(S);
888 }
889 
890 void StmtProfiler::VisitVAArgExpr(const VAArgExpr *S) {
891   VisitExpr(S);
892 }
893 
894 void StmtProfiler::VisitInitListExpr(const InitListExpr *S) {
895   if (S->getSyntacticForm()) {
896     VisitInitListExpr(S->getSyntacticForm());
897     return;
898   }
899 
900   VisitExpr(S);
901 }
902 
903 void StmtProfiler::VisitDesignatedInitExpr(const DesignatedInitExpr *S) {
904   VisitExpr(S);
905   ID.AddBoolean(S->usesGNUSyntax());
906   for (const DesignatedInitExpr::Designator &D : S->designators()) {
907     if (D.isFieldDesignator()) {
908       ID.AddInteger(0);
909       VisitName(D.getFieldName());
910       continue;
911     }
912 
913     if (D.isArrayDesignator()) {
914       ID.AddInteger(1);
915     } else {
916       assert(D.isArrayRangeDesignator());
917       ID.AddInteger(2);
918     }
919     ID.AddInteger(D.getFirstExprIndex());
920   }
921 }
922 
923 // Seems that if VisitInitListExpr() only works on the syntactic form of an
924 // InitListExpr, then a DesignatedInitUpdateExpr is not encountered.
925 void StmtProfiler::VisitDesignatedInitUpdateExpr(
926     const DesignatedInitUpdateExpr *S) {
927   llvm_unreachable("Unexpected DesignatedInitUpdateExpr in syntactic form of "
928                    "initializer");
929 }
930 
931 void StmtProfiler::VisitNoInitExpr(const NoInitExpr *S) {
932   llvm_unreachable("Unexpected NoInitExpr in syntactic form of initializer");
933 }
934 
935 void StmtProfiler::VisitImplicitValueInitExpr(const ImplicitValueInitExpr *S) {
936   VisitExpr(S);
937 }
938 
939 void StmtProfiler::VisitExtVectorElementExpr(const ExtVectorElementExpr *S) {
940   VisitExpr(S);
941   VisitName(&S->getAccessor());
942 }
943 
944 void StmtProfiler::VisitBlockExpr(const BlockExpr *S) {
945   VisitExpr(S);
946   VisitDecl(S->getBlockDecl());
947 }
948 
949 void StmtProfiler::VisitGenericSelectionExpr(const GenericSelectionExpr *S) {
950   VisitExpr(S);
951   for (unsigned i = 0; i != S->getNumAssocs(); ++i) {
952     QualType T = S->getAssocType(i);
953     if (T.isNull())
954       ID.AddPointer(nullptr);
955     else
956       VisitType(T);
957     VisitExpr(S->getAssocExpr(i));
958   }
959 }
960 
961 void StmtProfiler::VisitPseudoObjectExpr(const PseudoObjectExpr *S) {
962   VisitExpr(S);
963   for (PseudoObjectExpr::const_semantics_iterator
964          i = S->semantics_begin(), e = S->semantics_end(); i != e; ++i)
965     // Normally, we would not profile the source expressions of OVEs.
966     if (const OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(*i))
967       Visit(OVE->getSourceExpr());
968 }
969 
970 void StmtProfiler::VisitAtomicExpr(const AtomicExpr *S) {
971   VisitExpr(S);
972   ID.AddInteger(S->getOp());
973 }
974 
975 static Stmt::StmtClass DecodeOperatorCall(const CXXOperatorCallExpr *S,
976                                           UnaryOperatorKind &UnaryOp,
977                                           BinaryOperatorKind &BinaryOp) {
978   switch (S->getOperator()) {
979   case OO_None:
980   case OO_New:
981   case OO_Delete:
982   case OO_Array_New:
983   case OO_Array_Delete:
984   case OO_Arrow:
985   case OO_Call:
986   case OO_Conditional:
987   case OO_Coawait:
988   case NUM_OVERLOADED_OPERATORS:
989     llvm_unreachable("Invalid operator call kind");
990 
991   case OO_Plus:
992     if (S->getNumArgs() == 1) {
993       UnaryOp = UO_Plus;
994       return Stmt::UnaryOperatorClass;
995     }
996 
997     BinaryOp = BO_Add;
998     return Stmt::BinaryOperatorClass;
999 
1000   case OO_Minus:
1001     if (S->getNumArgs() == 1) {
1002       UnaryOp = UO_Minus;
1003       return Stmt::UnaryOperatorClass;
1004     }
1005 
1006     BinaryOp = BO_Sub;
1007     return Stmt::BinaryOperatorClass;
1008 
1009   case OO_Star:
1010     if (S->getNumArgs() == 1) {
1011       UnaryOp = UO_Deref;
1012       return Stmt::UnaryOperatorClass;
1013     }
1014 
1015     BinaryOp = BO_Mul;
1016     return Stmt::BinaryOperatorClass;
1017 
1018   case OO_Slash:
1019     BinaryOp = BO_Div;
1020     return Stmt::BinaryOperatorClass;
1021 
1022   case OO_Percent:
1023     BinaryOp = BO_Rem;
1024     return Stmt::BinaryOperatorClass;
1025 
1026   case OO_Caret:
1027     BinaryOp = BO_Xor;
1028     return Stmt::BinaryOperatorClass;
1029 
1030   case OO_Amp:
1031     if (S->getNumArgs() == 1) {
1032       UnaryOp = UO_AddrOf;
1033       return Stmt::UnaryOperatorClass;
1034     }
1035 
1036     BinaryOp = BO_And;
1037     return Stmt::BinaryOperatorClass;
1038 
1039   case OO_Pipe:
1040     BinaryOp = BO_Or;
1041     return Stmt::BinaryOperatorClass;
1042 
1043   case OO_Tilde:
1044     UnaryOp = UO_Not;
1045     return Stmt::UnaryOperatorClass;
1046 
1047   case OO_Exclaim:
1048     UnaryOp = UO_LNot;
1049     return Stmt::UnaryOperatorClass;
1050 
1051   case OO_Equal:
1052     BinaryOp = BO_Assign;
1053     return Stmt::BinaryOperatorClass;
1054 
1055   case OO_Less:
1056     BinaryOp = BO_LT;
1057     return Stmt::BinaryOperatorClass;
1058 
1059   case OO_Greater:
1060     BinaryOp = BO_GT;
1061     return Stmt::BinaryOperatorClass;
1062 
1063   case OO_PlusEqual:
1064     BinaryOp = BO_AddAssign;
1065     return Stmt::CompoundAssignOperatorClass;
1066 
1067   case OO_MinusEqual:
1068     BinaryOp = BO_SubAssign;
1069     return Stmt::CompoundAssignOperatorClass;
1070 
1071   case OO_StarEqual:
1072     BinaryOp = BO_MulAssign;
1073     return Stmt::CompoundAssignOperatorClass;
1074 
1075   case OO_SlashEqual:
1076     BinaryOp = BO_DivAssign;
1077     return Stmt::CompoundAssignOperatorClass;
1078 
1079   case OO_PercentEqual:
1080     BinaryOp = BO_RemAssign;
1081     return Stmt::CompoundAssignOperatorClass;
1082 
1083   case OO_CaretEqual:
1084     BinaryOp = BO_XorAssign;
1085     return Stmt::CompoundAssignOperatorClass;
1086 
1087   case OO_AmpEqual:
1088     BinaryOp = BO_AndAssign;
1089     return Stmt::CompoundAssignOperatorClass;
1090 
1091   case OO_PipeEqual:
1092     BinaryOp = BO_OrAssign;
1093     return Stmt::CompoundAssignOperatorClass;
1094 
1095   case OO_LessLess:
1096     BinaryOp = BO_Shl;
1097     return Stmt::BinaryOperatorClass;
1098 
1099   case OO_GreaterGreater:
1100     BinaryOp = BO_Shr;
1101     return Stmt::BinaryOperatorClass;
1102 
1103   case OO_LessLessEqual:
1104     BinaryOp = BO_ShlAssign;
1105     return Stmt::CompoundAssignOperatorClass;
1106 
1107   case OO_GreaterGreaterEqual:
1108     BinaryOp = BO_ShrAssign;
1109     return Stmt::CompoundAssignOperatorClass;
1110 
1111   case OO_EqualEqual:
1112     BinaryOp = BO_EQ;
1113     return Stmt::BinaryOperatorClass;
1114 
1115   case OO_ExclaimEqual:
1116     BinaryOp = BO_NE;
1117     return Stmt::BinaryOperatorClass;
1118 
1119   case OO_LessEqual:
1120     BinaryOp = BO_LE;
1121     return Stmt::BinaryOperatorClass;
1122 
1123   case OO_GreaterEqual:
1124     BinaryOp = BO_GE;
1125     return Stmt::BinaryOperatorClass;
1126 
1127   case OO_AmpAmp:
1128     BinaryOp = BO_LAnd;
1129     return Stmt::BinaryOperatorClass;
1130 
1131   case OO_PipePipe:
1132     BinaryOp = BO_LOr;
1133     return Stmt::BinaryOperatorClass;
1134 
1135   case OO_PlusPlus:
1136     UnaryOp = S->getNumArgs() == 1? UO_PreInc
1137                                   : UO_PostInc;
1138     return Stmt::UnaryOperatorClass;
1139 
1140   case OO_MinusMinus:
1141     UnaryOp = S->getNumArgs() == 1? UO_PreDec
1142                                   : UO_PostDec;
1143     return Stmt::UnaryOperatorClass;
1144 
1145   case OO_Comma:
1146     BinaryOp = BO_Comma;
1147     return Stmt::BinaryOperatorClass;
1148 
1149   case OO_ArrowStar:
1150     BinaryOp = BO_PtrMemI;
1151     return Stmt::BinaryOperatorClass;
1152 
1153   case OO_Subscript:
1154     return Stmt::ArraySubscriptExprClass;
1155   }
1156 
1157   llvm_unreachable("Invalid overloaded operator expression");
1158 }
1159 
1160 void StmtProfiler::VisitCXXOperatorCallExpr(const CXXOperatorCallExpr *S) {
1161   if (S->isTypeDependent()) {
1162     // Type-dependent operator calls are profiled like their underlying
1163     // syntactic operator.
1164     UnaryOperatorKind UnaryOp = UO_Extension;
1165     BinaryOperatorKind BinaryOp = BO_Comma;
1166     Stmt::StmtClass SC = DecodeOperatorCall(S, UnaryOp, BinaryOp);
1167 
1168     ID.AddInteger(SC);
1169     for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
1170       Visit(S->getArg(I));
1171     if (SC == Stmt::UnaryOperatorClass)
1172       ID.AddInteger(UnaryOp);
1173     else if (SC == Stmt::BinaryOperatorClass ||
1174              SC == Stmt::CompoundAssignOperatorClass)
1175       ID.AddInteger(BinaryOp);
1176     else
1177       assert(SC == Stmt::ArraySubscriptExprClass);
1178 
1179     return;
1180   }
1181 
1182   VisitCallExpr(S);
1183   ID.AddInteger(S->getOperator());
1184 }
1185 
1186 void StmtProfiler::VisitCXXMemberCallExpr(const CXXMemberCallExpr *S) {
1187   VisitCallExpr(S);
1188 }
1189 
1190 void StmtProfiler::VisitCUDAKernelCallExpr(const CUDAKernelCallExpr *S) {
1191   VisitCallExpr(S);
1192 }
1193 
1194 void StmtProfiler::VisitAsTypeExpr(const AsTypeExpr *S) {
1195   VisitExpr(S);
1196 }
1197 
1198 void StmtProfiler::VisitCXXNamedCastExpr(const CXXNamedCastExpr *S) {
1199   VisitExplicitCastExpr(S);
1200 }
1201 
1202 void StmtProfiler::VisitCXXStaticCastExpr(const CXXStaticCastExpr *S) {
1203   VisitCXXNamedCastExpr(S);
1204 }
1205 
1206 void StmtProfiler::VisitCXXDynamicCastExpr(const CXXDynamicCastExpr *S) {
1207   VisitCXXNamedCastExpr(S);
1208 }
1209 
1210 void
1211 StmtProfiler::VisitCXXReinterpretCastExpr(const CXXReinterpretCastExpr *S) {
1212   VisitCXXNamedCastExpr(S);
1213 }
1214 
1215 void StmtProfiler::VisitCXXConstCastExpr(const CXXConstCastExpr *S) {
1216   VisitCXXNamedCastExpr(S);
1217 }
1218 
1219 void StmtProfiler::VisitUserDefinedLiteral(const UserDefinedLiteral *S) {
1220   VisitCallExpr(S);
1221 }
1222 
1223 void StmtProfiler::VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *S) {
1224   VisitExpr(S);
1225   ID.AddBoolean(S->getValue());
1226 }
1227 
1228 void StmtProfiler::VisitCXXNullPtrLiteralExpr(const CXXNullPtrLiteralExpr *S) {
1229   VisitExpr(S);
1230 }
1231 
1232 void StmtProfiler::VisitCXXStdInitializerListExpr(
1233     const CXXStdInitializerListExpr *S) {
1234   VisitExpr(S);
1235 }
1236 
1237 void StmtProfiler::VisitCXXTypeidExpr(const CXXTypeidExpr *S) {
1238   VisitExpr(S);
1239   if (S->isTypeOperand())
1240     VisitType(S->getTypeOperandSourceInfo()->getType());
1241 }
1242 
1243 void StmtProfiler::VisitCXXUuidofExpr(const CXXUuidofExpr *S) {
1244   VisitExpr(S);
1245   if (S->isTypeOperand())
1246     VisitType(S->getTypeOperandSourceInfo()->getType());
1247 }
1248 
1249 void StmtProfiler::VisitMSPropertyRefExpr(const MSPropertyRefExpr *S) {
1250   VisitExpr(S);
1251   VisitDecl(S->getPropertyDecl());
1252 }
1253 
1254 void StmtProfiler::VisitMSPropertySubscriptExpr(
1255     const MSPropertySubscriptExpr *S) {
1256   VisitExpr(S);
1257 }
1258 
1259 void StmtProfiler::VisitCXXThisExpr(const CXXThisExpr *S) {
1260   VisitExpr(S);
1261   ID.AddBoolean(S->isImplicit());
1262 }
1263 
1264 void StmtProfiler::VisitCXXThrowExpr(const CXXThrowExpr *S) {
1265   VisitExpr(S);
1266 }
1267 
1268 void StmtProfiler::VisitCXXDefaultArgExpr(const CXXDefaultArgExpr *S) {
1269   VisitExpr(S);
1270   VisitDecl(S->getParam());
1271 }
1272 
1273 void StmtProfiler::VisitCXXDefaultInitExpr(const CXXDefaultInitExpr *S) {
1274   VisitExpr(S);
1275   VisitDecl(S->getField());
1276 }
1277 
1278 void StmtProfiler::VisitCXXBindTemporaryExpr(const CXXBindTemporaryExpr *S) {
1279   VisitExpr(S);
1280   VisitDecl(
1281          const_cast<CXXDestructorDecl *>(S->getTemporary()->getDestructor()));
1282 }
1283 
1284 void StmtProfiler::VisitCXXConstructExpr(const CXXConstructExpr *S) {
1285   VisitExpr(S);
1286   VisitDecl(S->getConstructor());
1287   ID.AddBoolean(S->isElidable());
1288 }
1289 
1290 void StmtProfiler::VisitCXXInheritedCtorInitExpr(
1291     const CXXInheritedCtorInitExpr *S) {
1292   VisitExpr(S);
1293   VisitDecl(S->getConstructor());
1294 }
1295 
1296 void StmtProfiler::VisitCXXFunctionalCastExpr(const CXXFunctionalCastExpr *S) {
1297   VisitExplicitCastExpr(S);
1298 }
1299 
1300 void
1301 StmtProfiler::VisitCXXTemporaryObjectExpr(const CXXTemporaryObjectExpr *S) {
1302   VisitCXXConstructExpr(S);
1303 }
1304 
1305 void
1306 StmtProfiler::VisitLambdaExpr(const LambdaExpr *S) {
1307   VisitExpr(S);
1308   for (LambdaExpr::capture_iterator C = S->explicit_capture_begin(),
1309                                  CEnd = S->explicit_capture_end();
1310        C != CEnd; ++C) {
1311     ID.AddInteger(C->getCaptureKind());
1312     switch (C->getCaptureKind()) {
1313     case LCK_StarThis:
1314     case LCK_This:
1315       break;
1316     case LCK_ByRef:
1317     case LCK_ByCopy:
1318       VisitDecl(C->getCapturedVar());
1319       ID.AddBoolean(C->isPackExpansion());
1320       break;
1321     case LCK_VLAType:
1322       llvm_unreachable("VLA type in explicit captures.");
1323     }
1324   }
1325   // Note: If we actually needed to be able to match lambda
1326   // expressions, we would have to consider parameters and return type
1327   // here, among other things.
1328   VisitStmt(S->getBody());
1329 }
1330 
1331 void
1332 StmtProfiler::VisitCXXScalarValueInitExpr(const CXXScalarValueInitExpr *S) {
1333   VisitExpr(S);
1334 }
1335 
1336 void StmtProfiler::VisitCXXDeleteExpr(const CXXDeleteExpr *S) {
1337   VisitExpr(S);
1338   ID.AddBoolean(S->isGlobalDelete());
1339   ID.AddBoolean(S->isArrayForm());
1340   VisitDecl(S->getOperatorDelete());
1341 }
1342 
1343 void StmtProfiler::VisitCXXNewExpr(const CXXNewExpr *S) {
1344   VisitExpr(S);
1345   VisitType(S->getAllocatedType());
1346   VisitDecl(S->getOperatorNew());
1347   VisitDecl(S->getOperatorDelete());
1348   ID.AddBoolean(S->isArray());
1349   ID.AddInteger(S->getNumPlacementArgs());
1350   ID.AddBoolean(S->isGlobalNew());
1351   ID.AddBoolean(S->isParenTypeId());
1352   ID.AddInteger(S->getInitializationStyle());
1353 }
1354 
1355 void
1356 StmtProfiler::VisitCXXPseudoDestructorExpr(const CXXPseudoDestructorExpr *S) {
1357   VisitExpr(S);
1358   ID.AddBoolean(S->isArrow());
1359   VisitNestedNameSpecifier(S->getQualifier());
1360   ID.AddBoolean(S->getScopeTypeInfo() != nullptr);
1361   if (S->getScopeTypeInfo())
1362     VisitType(S->getScopeTypeInfo()->getType());
1363   ID.AddBoolean(S->getDestroyedTypeInfo() != nullptr);
1364   if (S->getDestroyedTypeInfo())
1365     VisitType(S->getDestroyedType());
1366   else
1367     ID.AddPointer(S->getDestroyedTypeIdentifier());
1368 }
1369 
1370 void StmtProfiler::VisitOverloadExpr(const OverloadExpr *S) {
1371   VisitExpr(S);
1372   VisitNestedNameSpecifier(S->getQualifier());
1373   VisitName(S->getName());
1374   ID.AddBoolean(S->hasExplicitTemplateArgs());
1375   if (S->hasExplicitTemplateArgs())
1376     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1377 }
1378 
1379 void
1380 StmtProfiler::VisitUnresolvedLookupExpr(const UnresolvedLookupExpr *S) {
1381   VisitOverloadExpr(S);
1382 }
1383 
1384 void StmtProfiler::VisitTypeTraitExpr(const TypeTraitExpr *S) {
1385   VisitExpr(S);
1386   ID.AddInteger(S->getTrait());
1387   ID.AddInteger(S->getNumArgs());
1388   for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
1389     VisitType(S->getArg(I)->getType());
1390 }
1391 
1392 void StmtProfiler::VisitArrayTypeTraitExpr(const ArrayTypeTraitExpr *S) {
1393   VisitExpr(S);
1394   ID.AddInteger(S->getTrait());
1395   VisitType(S->getQueriedType());
1396 }
1397 
1398 void StmtProfiler::VisitExpressionTraitExpr(const ExpressionTraitExpr *S) {
1399   VisitExpr(S);
1400   ID.AddInteger(S->getTrait());
1401   VisitExpr(S->getQueriedExpression());
1402 }
1403 
1404 void StmtProfiler::VisitDependentScopeDeclRefExpr(
1405     const DependentScopeDeclRefExpr *S) {
1406   VisitExpr(S);
1407   VisitName(S->getDeclName());
1408   VisitNestedNameSpecifier(S->getQualifier());
1409   ID.AddBoolean(S->hasExplicitTemplateArgs());
1410   if (S->hasExplicitTemplateArgs())
1411     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1412 }
1413 
1414 void StmtProfiler::VisitExprWithCleanups(const ExprWithCleanups *S) {
1415   VisitExpr(S);
1416 }
1417 
1418 void StmtProfiler::VisitCXXUnresolvedConstructExpr(
1419     const CXXUnresolvedConstructExpr *S) {
1420   VisitExpr(S);
1421   VisitType(S->getTypeAsWritten());
1422 }
1423 
1424 void StmtProfiler::VisitCXXDependentScopeMemberExpr(
1425     const CXXDependentScopeMemberExpr *S) {
1426   ID.AddBoolean(S->isImplicitAccess());
1427   if (!S->isImplicitAccess()) {
1428     VisitExpr(S);
1429     ID.AddBoolean(S->isArrow());
1430   }
1431   VisitNestedNameSpecifier(S->getQualifier());
1432   VisitName(S->getMember());
1433   ID.AddBoolean(S->hasExplicitTemplateArgs());
1434   if (S->hasExplicitTemplateArgs())
1435     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1436 }
1437 
1438 void StmtProfiler::VisitUnresolvedMemberExpr(const UnresolvedMemberExpr *S) {
1439   ID.AddBoolean(S->isImplicitAccess());
1440   if (!S->isImplicitAccess()) {
1441     VisitExpr(S);
1442     ID.AddBoolean(S->isArrow());
1443   }
1444   VisitNestedNameSpecifier(S->getQualifier());
1445   VisitName(S->getMemberName());
1446   ID.AddBoolean(S->hasExplicitTemplateArgs());
1447   if (S->hasExplicitTemplateArgs())
1448     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1449 }
1450 
1451 void StmtProfiler::VisitCXXNoexceptExpr(const CXXNoexceptExpr *S) {
1452   VisitExpr(S);
1453 }
1454 
1455 void StmtProfiler::VisitPackExpansionExpr(const PackExpansionExpr *S) {
1456   VisitExpr(S);
1457 }
1458 
1459 void StmtProfiler::VisitSizeOfPackExpr(const SizeOfPackExpr *S) {
1460   VisitExpr(S);
1461   VisitDecl(S->getPack());
1462   if (S->isPartiallySubstituted()) {
1463     auto Args = S->getPartialArguments();
1464     ID.AddInteger(Args.size());
1465     for (const auto &TA : Args)
1466       VisitTemplateArgument(TA);
1467   } else {
1468     ID.AddInteger(0);
1469   }
1470 }
1471 
1472 void StmtProfiler::VisitSubstNonTypeTemplateParmPackExpr(
1473     const SubstNonTypeTemplateParmPackExpr *S) {
1474   VisitExpr(S);
1475   VisitDecl(S->getParameterPack());
1476   VisitTemplateArgument(S->getArgumentPack());
1477 }
1478 
1479 void StmtProfiler::VisitSubstNonTypeTemplateParmExpr(
1480     const SubstNonTypeTemplateParmExpr *E) {
1481   // Profile exactly as the replacement expression.
1482   Visit(E->getReplacement());
1483 }
1484 
1485 void StmtProfiler::VisitFunctionParmPackExpr(const FunctionParmPackExpr *S) {
1486   VisitExpr(S);
1487   VisitDecl(S->getParameterPack());
1488   ID.AddInteger(S->getNumExpansions());
1489   for (FunctionParmPackExpr::iterator I = S->begin(), E = S->end(); I != E; ++I)
1490     VisitDecl(*I);
1491 }
1492 
1493 void StmtProfiler::VisitMaterializeTemporaryExpr(
1494                                            const MaterializeTemporaryExpr *S) {
1495   VisitExpr(S);
1496 }
1497 
1498 void StmtProfiler::VisitCXXFoldExpr(const CXXFoldExpr *S) {
1499   VisitExpr(S);
1500   ID.AddInteger(S->getOperator());
1501 }
1502 
1503 void StmtProfiler::VisitCoroutineBodyStmt(const CoroutineBodyStmt *S) {
1504   VisitStmt(S);
1505 }
1506 
1507 void StmtProfiler::VisitCoreturnStmt(const CoreturnStmt *S) {
1508   VisitStmt(S);
1509 }
1510 
1511 void StmtProfiler::VisitCoawaitExpr(const CoawaitExpr *S) {
1512   VisitExpr(S);
1513 }
1514 
1515 void StmtProfiler::VisitCoyieldExpr(const CoyieldExpr *S) {
1516   VisitExpr(S);
1517 }
1518 
1519 void StmtProfiler::VisitOpaqueValueExpr(const OpaqueValueExpr *E) {
1520   VisitExpr(E);
1521 }
1522 
1523 void StmtProfiler::VisitTypoExpr(const TypoExpr *E) {
1524   VisitExpr(E);
1525 }
1526 
1527 void StmtProfiler::VisitObjCStringLiteral(const ObjCStringLiteral *S) {
1528   VisitExpr(S);
1529 }
1530 
1531 void StmtProfiler::VisitObjCBoxedExpr(const ObjCBoxedExpr *E) {
1532   VisitExpr(E);
1533 }
1534 
1535 void StmtProfiler::VisitObjCArrayLiteral(const ObjCArrayLiteral *E) {
1536   VisitExpr(E);
1537 }
1538 
1539 void StmtProfiler::VisitObjCDictionaryLiteral(const ObjCDictionaryLiteral *E) {
1540   VisitExpr(E);
1541 }
1542 
1543 void StmtProfiler::VisitObjCEncodeExpr(const ObjCEncodeExpr *S) {
1544   VisitExpr(S);
1545   VisitType(S->getEncodedType());
1546 }
1547 
1548 void StmtProfiler::VisitObjCSelectorExpr(const ObjCSelectorExpr *S) {
1549   VisitExpr(S);
1550   VisitName(S->getSelector());
1551 }
1552 
1553 void StmtProfiler::VisitObjCProtocolExpr(const ObjCProtocolExpr *S) {
1554   VisitExpr(S);
1555   VisitDecl(S->getProtocol());
1556 }
1557 
1558 void StmtProfiler::VisitObjCIvarRefExpr(const ObjCIvarRefExpr *S) {
1559   VisitExpr(S);
1560   VisitDecl(S->getDecl());
1561   ID.AddBoolean(S->isArrow());
1562   ID.AddBoolean(S->isFreeIvar());
1563 }
1564 
1565 void StmtProfiler::VisitObjCPropertyRefExpr(const ObjCPropertyRefExpr *S) {
1566   VisitExpr(S);
1567   if (S->isImplicitProperty()) {
1568     VisitDecl(S->getImplicitPropertyGetter());
1569     VisitDecl(S->getImplicitPropertySetter());
1570   } else {
1571     VisitDecl(S->getExplicitProperty());
1572   }
1573   if (S->isSuperReceiver()) {
1574     ID.AddBoolean(S->isSuperReceiver());
1575     VisitType(S->getSuperReceiverType());
1576   }
1577 }
1578 
1579 void StmtProfiler::VisitObjCSubscriptRefExpr(const ObjCSubscriptRefExpr *S) {
1580   VisitExpr(S);
1581   VisitDecl(S->getAtIndexMethodDecl());
1582   VisitDecl(S->setAtIndexMethodDecl());
1583 }
1584 
1585 void StmtProfiler::VisitObjCMessageExpr(const ObjCMessageExpr *S) {
1586   VisitExpr(S);
1587   VisitName(S->getSelector());
1588   VisitDecl(S->getMethodDecl());
1589 }
1590 
1591 void StmtProfiler::VisitObjCIsaExpr(const ObjCIsaExpr *S) {
1592   VisitExpr(S);
1593   ID.AddBoolean(S->isArrow());
1594 }
1595 
1596 void StmtProfiler::VisitObjCBoolLiteralExpr(const ObjCBoolLiteralExpr *S) {
1597   VisitExpr(S);
1598   ID.AddBoolean(S->getValue());
1599 }
1600 
1601 void StmtProfiler::VisitObjCIndirectCopyRestoreExpr(
1602     const ObjCIndirectCopyRestoreExpr *S) {
1603   VisitExpr(S);
1604   ID.AddBoolean(S->shouldCopy());
1605 }
1606 
1607 void StmtProfiler::VisitObjCBridgedCastExpr(const ObjCBridgedCastExpr *S) {
1608   VisitExplicitCastExpr(S);
1609   ID.AddBoolean(S->getBridgeKind());
1610 }
1611 
1612 void StmtProfiler::VisitDecl(const Decl *D) {
1613   ID.AddInteger(D? D->getKind() : 0);
1614 
1615   if (Canonical && D) {
1616     if (const NonTypeTemplateParmDecl *NTTP =
1617           dyn_cast<NonTypeTemplateParmDecl>(D)) {
1618       ID.AddInteger(NTTP->getDepth());
1619       ID.AddInteger(NTTP->getIndex());
1620       ID.AddBoolean(NTTP->isParameterPack());
1621       VisitType(NTTP->getType());
1622       return;
1623     }
1624 
1625     if (const ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) {
1626       // The Itanium C++ ABI uses the type, scope depth, and scope
1627       // index of a parameter when mangling expressions that involve
1628       // function parameters, so we will use the parameter's type for
1629       // establishing function parameter identity. That way, our
1630       // definition of "equivalent" (per C++ [temp.over.link]) is at
1631       // least as strong as the definition of "equivalent" used for
1632       // name mangling.
1633       VisitType(Parm->getType());
1634       ID.AddInteger(Parm->getFunctionScopeDepth());
1635       ID.AddInteger(Parm->getFunctionScopeIndex());
1636       return;
1637     }
1638 
1639     if (const TemplateTypeParmDecl *TTP =
1640           dyn_cast<TemplateTypeParmDecl>(D)) {
1641       ID.AddInteger(TTP->getDepth());
1642       ID.AddInteger(TTP->getIndex());
1643       ID.AddBoolean(TTP->isParameterPack());
1644       return;
1645     }
1646 
1647     if (const TemplateTemplateParmDecl *TTP =
1648           dyn_cast<TemplateTemplateParmDecl>(D)) {
1649       ID.AddInteger(TTP->getDepth());
1650       ID.AddInteger(TTP->getIndex());
1651       ID.AddBoolean(TTP->isParameterPack());
1652       return;
1653     }
1654   }
1655 
1656   ID.AddPointer(D? D->getCanonicalDecl() : nullptr);
1657 }
1658 
1659 void StmtProfiler::VisitType(QualType T) {
1660   if (Canonical)
1661     T = Context.getCanonicalType(T);
1662 
1663   ID.AddPointer(T.getAsOpaquePtr());
1664 }
1665 
1666 void StmtProfiler::VisitName(DeclarationName Name) {
1667   ID.AddPointer(Name.getAsOpaquePtr());
1668 }
1669 
1670 void StmtProfiler::VisitNestedNameSpecifier(NestedNameSpecifier *NNS) {
1671   if (Canonical)
1672     NNS = Context.getCanonicalNestedNameSpecifier(NNS);
1673   ID.AddPointer(NNS);
1674 }
1675 
1676 void StmtProfiler::VisitTemplateName(TemplateName Name) {
1677   if (Canonical)
1678     Name = Context.getCanonicalTemplateName(Name);
1679 
1680   Name.Profile(ID);
1681 }
1682 
1683 void StmtProfiler::VisitTemplateArguments(const TemplateArgumentLoc *Args,
1684                                           unsigned NumArgs) {
1685   ID.AddInteger(NumArgs);
1686   for (unsigned I = 0; I != NumArgs; ++I)
1687     VisitTemplateArgument(Args[I].getArgument());
1688 }
1689 
1690 void StmtProfiler::VisitTemplateArgument(const TemplateArgument &Arg) {
1691   // Mostly repetitive with TemplateArgument::Profile!
1692   ID.AddInteger(Arg.getKind());
1693   switch (Arg.getKind()) {
1694   case TemplateArgument::Null:
1695     break;
1696 
1697   case TemplateArgument::Type:
1698     VisitType(Arg.getAsType());
1699     break;
1700 
1701   case TemplateArgument::Template:
1702   case TemplateArgument::TemplateExpansion:
1703     VisitTemplateName(Arg.getAsTemplateOrTemplatePattern());
1704     break;
1705 
1706   case TemplateArgument::Declaration:
1707     VisitDecl(Arg.getAsDecl());
1708     break;
1709 
1710   case TemplateArgument::NullPtr:
1711     VisitType(Arg.getNullPtrType());
1712     break;
1713 
1714   case TemplateArgument::Integral:
1715     Arg.getAsIntegral().Profile(ID);
1716     VisitType(Arg.getIntegralType());
1717     break;
1718 
1719   case TemplateArgument::Expression:
1720     Visit(Arg.getAsExpr());
1721     break;
1722 
1723   case TemplateArgument::Pack:
1724     for (const auto &P : Arg.pack_elements())
1725       VisitTemplateArgument(P);
1726     break;
1727   }
1728 }
1729 
1730 void Stmt::Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
1731                    bool Canonical) const {
1732   StmtProfiler Profiler(ID, Context, Canonical);
1733   Profiler.Visit(this);
1734 }
1735