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::VisitCaseStmt(const CaseStmt *S) {
97   VisitStmt(S);
98 }
99 
100 void StmtProfiler::VisitDefaultStmt(const DefaultStmt *S) {
101   VisitStmt(S);
102 }
103 
104 void StmtProfiler::VisitLabelStmt(const LabelStmt *S) {
105   VisitStmt(S);
106   VisitDecl(S->getDecl());
107 }
108 
109 void StmtProfiler::VisitAttributedStmt(const AttributedStmt *S) {
110   VisitStmt(S);
111   // TODO: maybe visit attributes?
112 }
113 
114 void StmtProfiler::VisitIfStmt(const IfStmt *S) {
115   VisitStmt(S);
116   VisitDecl(S->getConditionVariable());
117 }
118 
119 void StmtProfiler::VisitSwitchStmt(const SwitchStmt *S) {
120   VisitStmt(S);
121   VisitDecl(S->getConditionVariable());
122 }
123 
124 void StmtProfiler::VisitWhileStmt(const WhileStmt *S) {
125   VisitStmt(S);
126   VisitDecl(S->getConditionVariable());
127 }
128 
129 void StmtProfiler::VisitDoStmt(const DoStmt *S) {
130   VisitStmt(S);
131 }
132 
133 void StmtProfiler::VisitForStmt(const ForStmt *S) {
134   VisitStmt(S);
135 }
136 
137 void StmtProfiler::VisitGotoStmt(const GotoStmt *S) {
138   VisitStmt(S);
139   VisitDecl(S->getLabel());
140 }
141 
142 void StmtProfiler::VisitIndirectGotoStmt(const IndirectGotoStmt *S) {
143   VisitStmt(S);
144 }
145 
146 void StmtProfiler::VisitContinueStmt(const ContinueStmt *S) {
147   VisitStmt(S);
148 }
149 
150 void StmtProfiler::VisitBreakStmt(const BreakStmt *S) {
151   VisitStmt(S);
152 }
153 
154 void StmtProfiler::VisitReturnStmt(const ReturnStmt *S) {
155   VisitStmt(S);
156 }
157 
158 void StmtProfiler::VisitGCCAsmStmt(const GCCAsmStmt *S) {
159   VisitStmt(S);
160   ID.AddBoolean(S->isVolatile());
161   ID.AddBoolean(S->isSimple());
162   VisitStringLiteral(S->getAsmString());
163   ID.AddInteger(S->getNumOutputs());
164   for (unsigned I = 0, N = S->getNumOutputs(); I != N; ++I) {
165     ID.AddString(S->getOutputName(I));
166     VisitStringLiteral(S->getOutputConstraintLiteral(I));
167   }
168   ID.AddInteger(S->getNumInputs());
169   for (unsigned I = 0, N = S->getNumInputs(); I != N; ++I) {
170     ID.AddString(S->getInputName(I));
171     VisitStringLiteral(S->getInputConstraintLiteral(I));
172   }
173   ID.AddInteger(S->getNumClobbers());
174   for (unsigned I = 0, N = S->getNumClobbers(); I != N; ++I)
175     VisitStringLiteral(S->getClobberStringLiteral(I));
176 }
177 
178 void StmtProfiler::VisitMSAsmStmt(const MSAsmStmt *S) {
179   // FIXME: Implement MS style inline asm statement profiler.
180   VisitStmt(S);
181 }
182 
183 void StmtProfiler::VisitCXXCatchStmt(const CXXCatchStmt *S) {
184   VisitStmt(S);
185   VisitType(S->getCaughtType());
186 }
187 
188 void StmtProfiler::VisitCXXTryStmt(const CXXTryStmt *S) {
189   VisitStmt(S);
190 }
191 
192 void StmtProfiler::VisitCXXForRangeStmt(const CXXForRangeStmt *S) {
193   VisitStmt(S);
194 }
195 
196 void StmtProfiler::VisitMSDependentExistsStmt(const MSDependentExistsStmt *S) {
197   VisitStmt(S);
198   ID.AddBoolean(S->isIfExists());
199   VisitNestedNameSpecifier(S->getQualifierLoc().getNestedNameSpecifier());
200   VisitName(S->getNameInfo().getName());
201 }
202 
203 void StmtProfiler::VisitSEHTryStmt(const SEHTryStmt *S) {
204   VisitStmt(S);
205 }
206 
207 void StmtProfiler::VisitSEHFinallyStmt(const SEHFinallyStmt *S) {
208   VisitStmt(S);
209 }
210 
211 void StmtProfiler::VisitSEHExceptStmt(const SEHExceptStmt *S) {
212   VisitStmt(S);
213 }
214 
215 void StmtProfiler::VisitSEHLeaveStmt(const SEHLeaveStmt *S) {
216   VisitStmt(S);
217 }
218 
219 void StmtProfiler::VisitCapturedStmt(const CapturedStmt *S) {
220   VisitStmt(S);
221 }
222 
223 void StmtProfiler::VisitObjCForCollectionStmt(const ObjCForCollectionStmt *S) {
224   VisitStmt(S);
225 }
226 
227 void StmtProfiler::VisitObjCAtCatchStmt(const ObjCAtCatchStmt *S) {
228   VisitStmt(S);
229   ID.AddBoolean(S->hasEllipsis());
230   if (S->getCatchParamDecl())
231     VisitType(S->getCatchParamDecl()->getType());
232 }
233 
234 void StmtProfiler::VisitObjCAtFinallyStmt(const ObjCAtFinallyStmt *S) {
235   VisitStmt(S);
236 }
237 
238 void StmtProfiler::VisitObjCAtTryStmt(const ObjCAtTryStmt *S) {
239   VisitStmt(S);
240 }
241 
242 void
243 StmtProfiler::VisitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt *S) {
244   VisitStmt(S);
245 }
246 
247 void StmtProfiler::VisitObjCAtThrowStmt(const ObjCAtThrowStmt *S) {
248   VisitStmt(S);
249 }
250 
251 void
252 StmtProfiler::VisitObjCAutoreleasePoolStmt(const ObjCAutoreleasePoolStmt *S) {
253   VisitStmt(S);
254 }
255 
256 namespace {
257 class OMPClauseProfiler : public ConstOMPClauseVisitor<OMPClauseProfiler> {
258   StmtProfiler *Profiler;
259   /// \brief Process clauses with list of variables.
260   template <typename T>
261   void VisitOMPClauseList(T *Node);
262 
263 public:
264   OMPClauseProfiler(StmtProfiler *P) : Profiler(P) { }
265 #define OPENMP_CLAUSE(Name, Class)                                             \
266   void Visit##Class(const Class *C);
267 #include "clang/Basic/OpenMPKinds.def"
268   void VistOMPClauseWithPreInit(const OMPClauseWithPreInit *C);
269   void VistOMPClauseWithPostUpdate(const OMPClauseWithPostUpdate *C);
270 };
271 
272 void OMPClauseProfiler::VistOMPClauseWithPreInit(
273     const OMPClauseWithPreInit *C) {
274   if (auto *S = C->getPreInitStmt())
275     Profiler->VisitStmt(S);
276 }
277 
278 void OMPClauseProfiler::VistOMPClauseWithPostUpdate(
279     const OMPClauseWithPostUpdate *C) {
280   VistOMPClauseWithPreInit(C);
281   if (auto *E = C->getPostUpdateExpr())
282     Profiler->VisitStmt(E);
283 }
284 
285 void OMPClauseProfiler::VisitOMPIfClause(const OMPIfClause *C) {
286   if (C->getCondition())
287     Profiler->VisitStmt(C->getCondition());
288 }
289 
290 void OMPClauseProfiler::VisitOMPFinalClause(const OMPFinalClause *C) {
291   if (C->getCondition())
292     Profiler->VisitStmt(C->getCondition());
293 }
294 
295 void OMPClauseProfiler::VisitOMPNumThreadsClause(const OMPNumThreadsClause *C) {
296   if (C->getNumThreads())
297     Profiler->VisitStmt(C->getNumThreads());
298 }
299 
300 void OMPClauseProfiler::VisitOMPSafelenClause(const OMPSafelenClause *C) {
301   if (C->getSafelen())
302     Profiler->VisitStmt(C->getSafelen());
303 }
304 
305 void OMPClauseProfiler::VisitOMPSimdlenClause(const OMPSimdlenClause *C) {
306   if (C->getSimdlen())
307     Profiler->VisitStmt(C->getSimdlen());
308 }
309 
310 void OMPClauseProfiler::VisitOMPCollapseClause(const OMPCollapseClause *C) {
311   if (C->getNumForLoops())
312     Profiler->VisitStmt(C->getNumForLoops());
313 }
314 
315 void OMPClauseProfiler::VisitOMPDefaultClause(const OMPDefaultClause *C) { }
316 
317 void OMPClauseProfiler::VisitOMPProcBindClause(const OMPProcBindClause *C) { }
318 
319 void OMPClauseProfiler::VisitOMPScheduleClause(const OMPScheduleClause *C) {
320   VistOMPClauseWithPreInit(C);
321   if (auto *S = C->getChunkSize())
322     Profiler->VisitStmt(S);
323 }
324 
325 void OMPClauseProfiler::VisitOMPOrderedClause(const OMPOrderedClause *C) {
326   if (auto *Num = C->getNumForLoops())
327     Profiler->VisitStmt(Num);
328 }
329 
330 void OMPClauseProfiler::VisitOMPNowaitClause(const OMPNowaitClause *) {}
331 
332 void OMPClauseProfiler::VisitOMPUntiedClause(const OMPUntiedClause *) {}
333 
334 void OMPClauseProfiler::VisitOMPMergeableClause(const OMPMergeableClause *) {}
335 
336 void OMPClauseProfiler::VisitOMPReadClause(const OMPReadClause *) {}
337 
338 void OMPClauseProfiler::VisitOMPWriteClause(const OMPWriteClause *) {}
339 
340 void OMPClauseProfiler::VisitOMPUpdateClause(const OMPUpdateClause *) {}
341 
342 void OMPClauseProfiler::VisitOMPCaptureClause(const OMPCaptureClause *) {}
343 
344 void OMPClauseProfiler::VisitOMPSeqCstClause(const OMPSeqCstClause *) {}
345 
346 void OMPClauseProfiler::VisitOMPThreadsClause(const OMPThreadsClause *) {}
347 
348 void OMPClauseProfiler::VisitOMPSIMDClause(const OMPSIMDClause *) {}
349 
350 void OMPClauseProfiler::VisitOMPNogroupClause(const OMPNogroupClause *) {}
351 
352 template<typename T>
353 void OMPClauseProfiler::VisitOMPClauseList(T *Node) {
354   for (auto *E : Node->varlists()) {
355     if (E)
356       Profiler->VisitStmt(E);
357   }
358 }
359 
360 void OMPClauseProfiler::VisitOMPPrivateClause(const OMPPrivateClause *C) {
361   VisitOMPClauseList(C);
362   for (auto *E : C->private_copies()) {
363     if (E)
364       Profiler->VisitStmt(E);
365   }
366 }
367 void
368 OMPClauseProfiler::VisitOMPFirstprivateClause(const OMPFirstprivateClause *C) {
369   VisitOMPClauseList(C);
370   VistOMPClauseWithPreInit(C);
371   for (auto *E : C->private_copies()) {
372     if (E)
373       Profiler->VisitStmt(E);
374   }
375   for (auto *E : C->inits()) {
376     if (E)
377       Profiler->VisitStmt(E);
378   }
379 }
380 void
381 OMPClauseProfiler::VisitOMPLastprivateClause(const OMPLastprivateClause *C) {
382   VisitOMPClauseList(C);
383   VistOMPClauseWithPostUpdate(C);
384   for (auto *E : C->source_exprs()) {
385     if (E)
386       Profiler->VisitStmt(E);
387   }
388   for (auto *E : C->destination_exprs()) {
389     if (E)
390       Profiler->VisitStmt(E);
391   }
392   for (auto *E : C->assignment_ops()) {
393     if (E)
394       Profiler->VisitStmt(E);
395   }
396 }
397 void OMPClauseProfiler::VisitOMPSharedClause(const OMPSharedClause *C) {
398   VisitOMPClauseList(C);
399 }
400 void OMPClauseProfiler::VisitOMPReductionClause(
401                                          const OMPReductionClause *C) {
402   Profiler->VisitNestedNameSpecifier(
403       C->getQualifierLoc().getNestedNameSpecifier());
404   Profiler->VisitName(C->getNameInfo().getName());
405   VisitOMPClauseList(C);
406   VistOMPClauseWithPostUpdate(C);
407   for (auto *E : C->privates()) {
408     if (E)
409       Profiler->VisitStmt(E);
410   }
411   for (auto *E : C->lhs_exprs()) {
412     if (E)
413       Profiler->VisitStmt(E);
414   }
415   for (auto *E : C->rhs_exprs()) {
416     if (E)
417       Profiler->VisitStmt(E);
418   }
419   for (auto *E : C->reduction_ops()) {
420     if (E)
421       Profiler->VisitStmt(E);
422   }
423 }
424 void OMPClauseProfiler::VisitOMPLinearClause(const OMPLinearClause *C) {
425   VisitOMPClauseList(C);
426   VistOMPClauseWithPostUpdate(C);
427   for (auto *E : C->privates()) {
428     if (E)
429       Profiler->VisitStmt(E);
430   }
431   for (auto *E : C->inits()) {
432     if (E)
433       Profiler->VisitStmt(E);
434   }
435   for (auto *E : C->updates()) {
436     if (E)
437       Profiler->VisitStmt(E);
438   }
439   for (auto *E : C->finals()) {
440     if (E)
441       Profiler->VisitStmt(E);
442   }
443   if (C->getStep())
444     Profiler->VisitStmt(C->getStep());
445   if (C->getCalcStep())
446     Profiler->VisitStmt(C->getCalcStep());
447 }
448 void OMPClauseProfiler::VisitOMPAlignedClause(const OMPAlignedClause *C) {
449   VisitOMPClauseList(C);
450   if (C->getAlignment())
451     Profiler->VisitStmt(C->getAlignment());
452 }
453 void OMPClauseProfiler::VisitOMPCopyinClause(const OMPCopyinClause *C) {
454   VisitOMPClauseList(C);
455   for (auto *E : C->source_exprs()) {
456     if (E)
457       Profiler->VisitStmt(E);
458   }
459   for (auto *E : C->destination_exprs()) {
460     if (E)
461       Profiler->VisitStmt(E);
462   }
463   for (auto *E : C->assignment_ops()) {
464     if (E)
465       Profiler->VisitStmt(E);
466   }
467 }
468 void
469 OMPClauseProfiler::VisitOMPCopyprivateClause(const OMPCopyprivateClause *C) {
470   VisitOMPClauseList(C);
471   for (auto *E : C->source_exprs()) {
472     if (E)
473       Profiler->VisitStmt(E);
474   }
475   for (auto *E : C->destination_exprs()) {
476     if (E)
477       Profiler->VisitStmt(E);
478   }
479   for (auto *E : C->assignment_ops()) {
480     if (E)
481       Profiler->VisitStmt(E);
482   }
483 }
484 void OMPClauseProfiler::VisitOMPFlushClause(const OMPFlushClause *C) {
485   VisitOMPClauseList(C);
486 }
487 void OMPClauseProfiler::VisitOMPDependClause(const OMPDependClause *C) {
488   VisitOMPClauseList(C);
489 }
490 void OMPClauseProfiler::VisitOMPDeviceClause(const OMPDeviceClause *C) {
491   if (C->getDevice())
492     Profiler->VisitStmt(C->getDevice());
493 }
494 void OMPClauseProfiler::VisitOMPMapClause(const OMPMapClause *C) {
495   VisitOMPClauseList(C);
496 }
497 void OMPClauseProfiler::VisitOMPNumTeamsClause(const OMPNumTeamsClause *C) {
498   if (C->getNumTeams())
499     Profiler->VisitStmt(C->getNumTeams());
500 }
501 void OMPClauseProfiler::VisitOMPThreadLimitClause(
502     const OMPThreadLimitClause *C) {
503   if (C->getThreadLimit())
504     Profiler->VisitStmt(C->getThreadLimit());
505 }
506 void OMPClauseProfiler::VisitOMPPriorityClause(const OMPPriorityClause *C) {
507   if (C->getPriority())
508     Profiler->VisitStmt(C->getPriority());
509 }
510 void OMPClauseProfiler::VisitOMPGrainsizeClause(const OMPGrainsizeClause *C) {
511   if (C->getGrainsize())
512     Profiler->VisitStmt(C->getGrainsize());
513 }
514 void OMPClauseProfiler::VisitOMPNumTasksClause(const OMPNumTasksClause *C) {
515   if (C->getNumTasks())
516     Profiler->VisitStmt(C->getNumTasks());
517 }
518 void OMPClauseProfiler::VisitOMPHintClause(const OMPHintClause *C) {
519   if (C->getHint())
520     Profiler->VisitStmt(C->getHint());
521 }
522 void OMPClauseProfiler::VisitOMPToClause(const OMPToClause *C) {
523   VisitOMPClauseList(C);
524 }
525 void OMPClauseProfiler::VisitOMPFromClause(const OMPFromClause *C) {
526   VisitOMPClauseList(C);
527 }
528 void OMPClauseProfiler::VisitOMPUseDevicePtrClause(
529     const OMPUseDevicePtrClause *C) {
530   VisitOMPClauseList(C);
531 }
532 void OMPClauseProfiler::VisitOMPIsDevicePtrClause(
533     const OMPIsDevicePtrClause *C) {
534   VisitOMPClauseList(C);
535 }
536 }
537 
538 void
539 StmtProfiler::VisitOMPExecutableDirective(const OMPExecutableDirective *S) {
540   VisitStmt(S);
541   OMPClauseProfiler P(this);
542   ArrayRef<OMPClause *> Clauses = S->clauses();
543   for (ArrayRef<OMPClause *>::iterator I = Clauses.begin(), E = Clauses.end();
544        I != E; ++I)
545     if (*I)
546       P.Visit(*I);
547 }
548 
549 void StmtProfiler::VisitOMPLoopDirective(const OMPLoopDirective *S) {
550   VisitOMPExecutableDirective(S);
551 }
552 
553 void StmtProfiler::VisitOMPParallelDirective(const OMPParallelDirective *S) {
554   VisitOMPExecutableDirective(S);
555 }
556 
557 void StmtProfiler::VisitOMPSimdDirective(const OMPSimdDirective *S) {
558   VisitOMPLoopDirective(S);
559 }
560 
561 void StmtProfiler::VisitOMPForDirective(const OMPForDirective *S) {
562   VisitOMPLoopDirective(S);
563 }
564 
565 void StmtProfiler::VisitOMPForSimdDirective(const OMPForSimdDirective *S) {
566   VisitOMPLoopDirective(S);
567 }
568 
569 void StmtProfiler::VisitOMPSectionsDirective(const OMPSectionsDirective *S) {
570   VisitOMPExecutableDirective(S);
571 }
572 
573 void StmtProfiler::VisitOMPSectionDirective(const OMPSectionDirective *S) {
574   VisitOMPExecutableDirective(S);
575 }
576 
577 void StmtProfiler::VisitOMPSingleDirective(const OMPSingleDirective *S) {
578   VisitOMPExecutableDirective(S);
579 }
580 
581 void StmtProfiler::VisitOMPMasterDirective(const OMPMasterDirective *S) {
582   VisitOMPExecutableDirective(S);
583 }
584 
585 void StmtProfiler::VisitOMPCriticalDirective(const OMPCriticalDirective *S) {
586   VisitOMPExecutableDirective(S);
587   VisitName(S->getDirectiveName().getName());
588 }
589 
590 void
591 StmtProfiler::VisitOMPParallelForDirective(const OMPParallelForDirective *S) {
592   VisitOMPLoopDirective(S);
593 }
594 
595 void StmtProfiler::VisitOMPParallelForSimdDirective(
596     const OMPParallelForSimdDirective *S) {
597   VisitOMPLoopDirective(S);
598 }
599 
600 void StmtProfiler::VisitOMPParallelSectionsDirective(
601     const OMPParallelSectionsDirective *S) {
602   VisitOMPExecutableDirective(S);
603 }
604 
605 void StmtProfiler::VisitOMPTaskDirective(const OMPTaskDirective *S) {
606   VisitOMPExecutableDirective(S);
607 }
608 
609 void StmtProfiler::VisitOMPTaskyieldDirective(const OMPTaskyieldDirective *S) {
610   VisitOMPExecutableDirective(S);
611 }
612 
613 void StmtProfiler::VisitOMPBarrierDirective(const OMPBarrierDirective *S) {
614   VisitOMPExecutableDirective(S);
615 }
616 
617 void StmtProfiler::VisitOMPTaskwaitDirective(const OMPTaskwaitDirective *S) {
618   VisitOMPExecutableDirective(S);
619 }
620 
621 void StmtProfiler::VisitOMPTaskgroupDirective(const OMPTaskgroupDirective *S) {
622   VisitOMPExecutableDirective(S);
623 }
624 
625 void StmtProfiler::VisitOMPFlushDirective(const OMPFlushDirective *S) {
626   VisitOMPExecutableDirective(S);
627 }
628 
629 void StmtProfiler::VisitOMPOrderedDirective(const OMPOrderedDirective *S) {
630   VisitOMPExecutableDirective(S);
631 }
632 
633 void StmtProfiler::VisitOMPAtomicDirective(const OMPAtomicDirective *S) {
634   VisitOMPExecutableDirective(S);
635 }
636 
637 void StmtProfiler::VisitOMPTargetDirective(const OMPTargetDirective *S) {
638   VisitOMPExecutableDirective(S);
639 }
640 
641 void StmtProfiler::VisitOMPTargetDataDirective(const OMPTargetDataDirective *S) {
642   VisitOMPExecutableDirective(S);
643 }
644 
645 void StmtProfiler::VisitOMPTargetEnterDataDirective(
646     const OMPTargetEnterDataDirective *S) {
647   VisitOMPExecutableDirective(S);
648 }
649 
650 void StmtProfiler::VisitOMPTargetExitDataDirective(
651     const OMPTargetExitDataDirective *S) {
652   VisitOMPExecutableDirective(S);
653 }
654 
655 void StmtProfiler::VisitOMPTargetParallelDirective(
656     const OMPTargetParallelDirective *S) {
657   VisitOMPExecutableDirective(S);
658 }
659 
660 void StmtProfiler::VisitOMPTargetParallelForDirective(
661     const OMPTargetParallelForDirective *S) {
662   VisitOMPExecutableDirective(S);
663 }
664 
665 void StmtProfiler::VisitOMPTeamsDirective(const OMPTeamsDirective *S) {
666   VisitOMPExecutableDirective(S);
667 }
668 
669 void StmtProfiler::VisitOMPCancellationPointDirective(
670     const OMPCancellationPointDirective *S) {
671   VisitOMPExecutableDirective(S);
672 }
673 
674 void StmtProfiler::VisitOMPCancelDirective(const OMPCancelDirective *S) {
675   VisitOMPExecutableDirective(S);
676 }
677 
678 void StmtProfiler::VisitOMPTaskLoopDirective(const OMPTaskLoopDirective *S) {
679   VisitOMPLoopDirective(S);
680 }
681 
682 void StmtProfiler::VisitOMPTaskLoopSimdDirective(
683     const OMPTaskLoopSimdDirective *S) {
684   VisitOMPLoopDirective(S);
685 }
686 
687 void StmtProfiler::VisitOMPDistributeDirective(
688     const OMPDistributeDirective *S) {
689   VisitOMPLoopDirective(S);
690 }
691 
692 void OMPClauseProfiler::VisitOMPDistScheduleClause(
693     const OMPDistScheduleClause *C) {
694   VistOMPClauseWithPreInit(C);
695   if (auto *S = C->getChunkSize())
696     Profiler->VisitStmt(S);
697 }
698 
699 void OMPClauseProfiler::VisitOMPDefaultmapClause(const OMPDefaultmapClause *) {}
700 
701 void StmtProfiler::VisitOMPTargetUpdateDirective(
702     const OMPTargetUpdateDirective *S) {
703   VisitOMPExecutableDirective(S);
704 }
705 
706 void StmtProfiler::VisitOMPDistributeParallelForDirective(
707     const OMPDistributeParallelForDirective *S) {
708   VisitOMPLoopDirective(S);
709 }
710 
711 void StmtProfiler::VisitOMPDistributeParallelForSimdDirective(
712     const OMPDistributeParallelForSimdDirective *S) {
713   VisitOMPLoopDirective(S);
714 }
715 
716 void StmtProfiler::VisitOMPDistributeSimdDirective(
717     const OMPDistributeSimdDirective *S) {
718   VisitOMPLoopDirective(S);
719 }
720 
721 void StmtProfiler::VisitOMPTargetParallelForSimdDirective(
722     const OMPTargetParallelForSimdDirective *S) {
723   VisitOMPLoopDirective(S);
724 }
725 
726 void StmtProfiler::VisitOMPTargetSimdDirective(
727     const OMPTargetSimdDirective *S) {
728   VisitOMPLoopDirective(S);
729 }
730 
731 void StmtProfiler::VisitOMPTeamsDistributeDirective(
732     const OMPTeamsDistributeDirective *S) {
733   VisitOMPLoopDirective(S);
734 }
735 
736 void StmtProfiler::VisitOMPTeamsDistributeSimdDirective(
737     const OMPTeamsDistributeSimdDirective *S) {
738   VisitOMPLoopDirective(S);
739 }
740 
741 void StmtProfiler::VisitOMPTeamsDistributeParallelForSimdDirective(
742     const OMPTeamsDistributeParallelForSimdDirective *S) {
743   VisitOMPLoopDirective(S);
744 }
745 
746 void StmtProfiler::VisitOMPTeamsDistributeParallelForDirective(
747     const OMPTeamsDistributeParallelForDirective *S) {
748   VisitOMPLoopDirective(S);
749 }
750 
751 void StmtProfiler::VisitExpr(const Expr *S) {
752   VisitStmt(S);
753 }
754 
755 void StmtProfiler::VisitDeclRefExpr(const DeclRefExpr *S) {
756   VisitExpr(S);
757   if (!Canonical)
758     VisitNestedNameSpecifier(S->getQualifier());
759   VisitDecl(S->getDecl());
760   if (!Canonical)
761     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
762 }
763 
764 void StmtProfiler::VisitPredefinedExpr(const PredefinedExpr *S) {
765   VisitExpr(S);
766   ID.AddInteger(S->getIdentType());
767 }
768 
769 void StmtProfiler::VisitIntegerLiteral(const IntegerLiteral *S) {
770   VisitExpr(S);
771   S->getValue().Profile(ID);
772   ID.AddInteger(S->getType()->castAs<BuiltinType>()->getKind());
773 }
774 
775 void StmtProfiler::VisitCharacterLiteral(const CharacterLiteral *S) {
776   VisitExpr(S);
777   ID.AddInteger(S->getKind());
778   ID.AddInteger(S->getValue());
779 }
780 
781 void StmtProfiler::VisitFloatingLiteral(const FloatingLiteral *S) {
782   VisitExpr(S);
783   S->getValue().Profile(ID);
784   ID.AddBoolean(S->isExact());
785   ID.AddInteger(S->getType()->castAs<BuiltinType>()->getKind());
786 }
787 
788 void StmtProfiler::VisitImaginaryLiteral(const ImaginaryLiteral *S) {
789   VisitExpr(S);
790 }
791 
792 void StmtProfiler::VisitStringLiteral(const StringLiteral *S) {
793   VisitExpr(S);
794   ID.AddString(S->getBytes());
795   ID.AddInteger(S->getKind());
796 }
797 
798 void StmtProfiler::VisitParenExpr(const ParenExpr *S) {
799   VisitExpr(S);
800 }
801 
802 void StmtProfiler::VisitParenListExpr(const ParenListExpr *S) {
803   VisitExpr(S);
804 }
805 
806 void StmtProfiler::VisitUnaryOperator(const UnaryOperator *S) {
807   VisitExpr(S);
808   ID.AddInteger(S->getOpcode());
809 }
810 
811 void StmtProfiler::VisitOffsetOfExpr(const OffsetOfExpr *S) {
812   VisitType(S->getTypeSourceInfo()->getType());
813   unsigned n = S->getNumComponents();
814   for (unsigned i = 0; i < n; ++i) {
815     const OffsetOfNode &ON = S->getComponent(i);
816     ID.AddInteger(ON.getKind());
817     switch (ON.getKind()) {
818     case OffsetOfNode::Array:
819       // Expressions handled below.
820       break;
821 
822     case OffsetOfNode::Field:
823       VisitDecl(ON.getField());
824       break;
825 
826     case OffsetOfNode::Identifier:
827       ID.AddPointer(ON.getFieldName());
828       break;
829 
830     case OffsetOfNode::Base:
831       // These nodes are implicit, and therefore don't need profiling.
832       break;
833     }
834   }
835 
836   VisitExpr(S);
837 }
838 
839 void
840 StmtProfiler::VisitUnaryExprOrTypeTraitExpr(const UnaryExprOrTypeTraitExpr *S) {
841   VisitExpr(S);
842   ID.AddInteger(S->getKind());
843   if (S->isArgumentType())
844     VisitType(S->getArgumentType());
845 }
846 
847 void StmtProfiler::VisitArraySubscriptExpr(const ArraySubscriptExpr *S) {
848   VisitExpr(S);
849 }
850 
851 void StmtProfiler::VisitOMPArraySectionExpr(const OMPArraySectionExpr *S) {
852   VisitExpr(S);
853 }
854 
855 void StmtProfiler::VisitCallExpr(const CallExpr *S) {
856   VisitExpr(S);
857 }
858 
859 void StmtProfiler::VisitMemberExpr(const MemberExpr *S) {
860   VisitExpr(S);
861   VisitDecl(S->getMemberDecl());
862   if (!Canonical)
863     VisitNestedNameSpecifier(S->getQualifier());
864   ID.AddBoolean(S->isArrow());
865 }
866 
867 void StmtProfiler::VisitCompoundLiteralExpr(const CompoundLiteralExpr *S) {
868   VisitExpr(S);
869   ID.AddBoolean(S->isFileScope());
870 }
871 
872 void StmtProfiler::VisitCastExpr(const CastExpr *S) {
873   VisitExpr(S);
874 }
875 
876 void StmtProfiler::VisitImplicitCastExpr(const ImplicitCastExpr *S) {
877   VisitCastExpr(S);
878   ID.AddInteger(S->getValueKind());
879 }
880 
881 void StmtProfiler::VisitExplicitCastExpr(const ExplicitCastExpr *S) {
882   VisitCastExpr(S);
883   VisitType(S->getTypeAsWritten());
884 }
885 
886 void StmtProfiler::VisitCStyleCastExpr(const CStyleCastExpr *S) {
887   VisitExplicitCastExpr(S);
888 }
889 
890 void StmtProfiler::VisitBinaryOperator(const BinaryOperator *S) {
891   VisitExpr(S);
892   ID.AddInteger(S->getOpcode());
893 }
894 
895 void
896 StmtProfiler::VisitCompoundAssignOperator(const CompoundAssignOperator *S) {
897   VisitBinaryOperator(S);
898 }
899 
900 void StmtProfiler::VisitConditionalOperator(const ConditionalOperator *S) {
901   VisitExpr(S);
902 }
903 
904 void StmtProfiler::VisitBinaryConditionalOperator(
905     const BinaryConditionalOperator *S) {
906   VisitExpr(S);
907 }
908 
909 void StmtProfiler::VisitAddrLabelExpr(const AddrLabelExpr *S) {
910   VisitExpr(S);
911   VisitDecl(S->getLabel());
912 }
913 
914 void StmtProfiler::VisitStmtExpr(const StmtExpr *S) {
915   VisitExpr(S);
916 }
917 
918 void StmtProfiler::VisitShuffleVectorExpr(const ShuffleVectorExpr *S) {
919   VisitExpr(S);
920 }
921 
922 void StmtProfiler::VisitConvertVectorExpr(const ConvertVectorExpr *S) {
923   VisitExpr(S);
924 }
925 
926 void StmtProfiler::VisitChooseExpr(const ChooseExpr *S) {
927   VisitExpr(S);
928 }
929 
930 void StmtProfiler::VisitGNUNullExpr(const GNUNullExpr *S) {
931   VisitExpr(S);
932 }
933 
934 void StmtProfiler::VisitVAArgExpr(const VAArgExpr *S) {
935   VisitExpr(S);
936 }
937 
938 void StmtProfiler::VisitInitListExpr(const InitListExpr *S) {
939   if (S->getSyntacticForm()) {
940     VisitInitListExpr(S->getSyntacticForm());
941     return;
942   }
943 
944   VisitExpr(S);
945 }
946 
947 void StmtProfiler::VisitDesignatedInitExpr(const DesignatedInitExpr *S) {
948   VisitExpr(S);
949   ID.AddBoolean(S->usesGNUSyntax());
950   for (const DesignatedInitExpr::Designator &D : S->designators()) {
951     if (D.isFieldDesignator()) {
952       ID.AddInteger(0);
953       VisitName(D.getFieldName());
954       continue;
955     }
956 
957     if (D.isArrayDesignator()) {
958       ID.AddInteger(1);
959     } else {
960       assert(D.isArrayRangeDesignator());
961       ID.AddInteger(2);
962     }
963     ID.AddInteger(D.getFirstExprIndex());
964   }
965 }
966 
967 // Seems that if VisitInitListExpr() only works on the syntactic form of an
968 // InitListExpr, then a DesignatedInitUpdateExpr is not encountered.
969 void StmtProfiler::VisitDesignatedInitUpdateExpr(
970     const DesignatedInitUpdateExpr *S) {
971   llvm_unreachable("Unexpected DesignatedInitUpdateExpr in syntactic form of "
972                    "initializer");
973 }
974 
975 void StmtProfiler::VisitNoInitExpr(const NoInitExpr *S) {
976   llvm_unreachable("Unexpected NoInitExpr in syntactic form of initializer");
977 }
978 
979 void StmtProfiler::VisitImplicitValueInitExpr(const ImplicitValueInitExpr *S) {
980   VisitExpr(S);
981 }
982 
983 void StmtProfiler::VisitExtVectorElementExpr(const ExtVectorElementExpr *S) {
984   VisitExpr(S);
985   VisitName(&S->getAccessor());
986 }
987 
988 void StmtProfiler::VisitBlockExpr(const BlockExpr *S) {
989   VisitExpr(S);
990   VisitDecl(S->getBlockDecl());
991 }
992 
993 void StmtProfiler::VisitGenericSelectionExpr(const GenericSelectionExpr *S) {
994   VisitExpr(S);
995   for (unsigned i = 0; i != S->getNumAssocs(); ++i) {
996     QualType T = S->getAssocType(i);
997     if (T.isNull())
998       ID.AddPointer(nullptr);
999     else
1000       VisitType(T);
1001     VisitExpr(S->getAssocExpr(i));
1002   }
1003 }
1004 
1005 void StmtProfiler::VisitPseudoObjectExpr(const PseudoObjectExpr *S) {
1006   VisitExpr(S);
1007   for (PseudoObjectExpr::const_semantics_iterator
1008          i = S->semantics_begin(), e = S->semantics_end(); i != e; ++i)
1009     // Normally, we would not profile the source expressions of OVEs.
1010     if (const OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(*i))
1011       Visit(OVE->getSourceExpr());
1012 }
1013 
1014 void StmtProfiler::VisitAtomicExpr(const AtomicExpr *S) {
1015   VisitExpr(S);
1016   ID.AddInteger(S->getOp());
1017 }
1018 
1019 static Stmt::StmtClass DecodeOperatorCall(const CXXOperatorCallExpr *S,
1020                                           UnaryOperatorKind &UnaryOp,
1021                                           BinaryOperatorKind &BinaryOp) {
1022   switch (S->getOperator()) {
1023   case OO_None:
1024   case OO_New:
1025   case OO_Delete:
1026   case OO_Array_New:
1027   case OO_Array_Delete:
1028   case OO_Arrow:
1029   case OO_Call:
1030   case OO_Conditional:
1031   case OO_Coawait:
1032   case NUM_OVERLOADED_OPERATORS:
1033     llvm_unreachable("Invalid operator call kind");
1034 
1035   case OO_Plus:
1036     if (S->getNumArgs() == 1) {
1037       UnaryOp = UO_Plus;
1038       return Stmt::UnaryOperatorClass;
1039     }
1040 
1041     BinaryOp = BO_Add;
1042     return Stmt::BinaryOperatorClass;
1043 
1044   case OO_Minus:
1045     if (S->getNumArgs() == 1) {
1046       UnaryOp = UO_Minus;
1047       return Stmt::UnaryOperatorClass;
1048     }
1049 
1050     BinaryOp = BO_Sub;
1051     return Stmt::BinaryOperatorClass;
1052 
1053   case OO_Star:
1054     if (S->getNumArgs() == 1) {
1055       UnaryOp = UO_Deref;
1056       return Stmt::UnaryOperatorClass;
1057     }
1058 
1059     BinaryOp = BO_Mul;
1060     return Stmt::BinaryOperatorClass;
1061 
1062   case OO_Slash:
1063     BinaryOp = BO_Div;
1064     return Stmt::BinaryOperatorClass;
1065 
1066   case OO_Percent:
1067     BinaryOp = BO_Rem;
1068     return Stmt::BinaryOperatorClass;
1069 
1070   case OO_Caret:
1071     BinaryOp = BO_Xor;
1072     return Stmt::BinaryOperatorClass;
1073 
1074   case OO_Amp:
1075     if (S->getNumArgs() == 1) {
1076       UnaryOp = UO_AddrOf;
1077       return Stmt::UnaryOperatorClass;
1078     }
1079 
1080     BinaryOp = BO_And;
1081     return Stmt::BinaryOperatorClass;
1082 
1083   case OO_Pipe:
1084     BinaryOp = BO_Or;
1085     return Stmt::BinaryOperatorClass;
1086 
1087   case OO_Tilde:
1088     UnaryOp = UO_Not;
1089     return Stmt::UnaryOperatorClass;
1090 
1091   case OO_Exclaim:
1092     UnaryOp = UO_LNot;
1093     return Stmt::UnaryOperatorClass;
1094 
1095   case OO_Equal:
1096     BinaryOp = BO_Assign;
1097     return Stmt::BinaryOperatorClass;
1098 
1099   case OO_Less:
1100     BinaryOp = BO_LT;
1101     return Stmt::BinaryOperatorClass;
1102 
1103   case OO_Greater:
1104     BinaryOp = BO_GT;
1105     return Stmt::BinaryOperatorClass;
1106 
1107   case OO_PlusEqual:
1108     BinaryOp = BO_AddAssign;
1109     return Stmt::CompoundAssignOperatorClass;
1110 
1111   case OO_MinusEqual:
1112     BinaryOp = BO_SubAssign;
1113     return Stmt::CompoundAssignOperatorClass;
1114 
1115   case OO_StarEqual:
1116     BinaryOp = BO_MulAssign;
1117     return Stmt::CompoundAssignOperatorClass;
1118 
1119   case OO_SlashEqual:
1120     BinaryOp = BO_DivAssign;
1121     return Stmt::CompoundAssignOperatorClass;
1122 
1123   case OO_PercentEqual:
1124     BinaryOp = BO_RemAssign;
1125     return Stmt::CompoundAssignOperatorClass;
1126 
1127   case OO_CaretEqual:
1128     BinaryOp = BO_XorAssign;
1129     return Stmt::CompoundAssignOperatorClass;
1130 
1131   case OO_AmpEqual:
1132     BinaryOp = BO_AndAssign;
1133     return Stmt::CompoundAssignOperatorClass;
1134 
1135   case OO_PipeEqual:
1136     BinaryOp = BO_OrAssign;
1137     return Stmt::CompoundAssignOperatorClass;
1138 
1139   case OO_LessLess:
1140     BinaryOp = BO_Shl;
1141     return Stmt::BinaryOperatorClass;
1142 
1143   case OO_GreaterGreater:
1144     BinaryOp = BO_Shr;
1145     return Stmt::BinaryOperatorClass;
1146 
1147   case OO_LessLessEqual:
1148     BinaryOp = BO_ShlAssign;
1149     return Stmt::CompoundAssignOperatorClass;
1150 
1151   case OO_GreaterGreaterEqual:
1152     BinaryOp = BO_ShrAssign;
1153     return Stmt::CompoundAssignOperatorClass;
1154 
1155   case OO_EqualEqual:
1156     BinaryOp = BO_EQ;
1157     return Stmt::BinaryOperatorClass;
1158 
1159   case OO_ExclaimEqual:
1160     BinaryOp = BO_NE;
1161     return Stmt::BinaryOperatorClass;
1162 
1163   case OO_LessEqual:
1164     BinaryOp = BO_LE;
1165     return Stmt::BinaryOperatorClass;
1166 
1167   case OO_GreaterEqual:
1168     BinaryOp = BO_GE;
1169     return Stmt::BinaryOperatorClass;
1170 
1171   case OO_AmpAmp:
1172     BinaryOp = BO_LAnd;
1173     return Stmt::BinaryOperatorClass;
1174 
1175   case OO_PipePipe:
1176     BinaryOp = BO_LOr;
1177     return Stmt::BinaryOperatorClass;
1178 
1179   case OO_PlusPlus:
1180     UnaryOp = S->getNumArgs() == 1? UO_PreInc
1181                                   : UO_PostInc;
1182     return Stmt::UnaryOperatorClass;
1183 
1184   case OO_MinusMinus:
1185     UnaryOp = S->getNumArgs() == 1? UO_PreDec
1186                                   : UO_PostDec;
1187     return Stmt::UnaryOperatorClass;
1188 
1189   case OO_Comma:
1190     BinaryOp = BO_Comma;
1191     return Stmt::BinaryOperatorClass;
1192 
1193   case OO_ArrowStar:
1194     BinaryOp = BO_PtrMemI;
1195     return Stmt::BinaryOperatorClass;
1196 
1197   case OO_Subscript:
1198     return Stmt::ArraySubscriptExprClass;
1199   }
1200 
1201   llvm_unreachable("Invalid overloaded operator expression");
1202 }
1203 
1204 void StmtProfiler::VisitCXXOperatorCallExpr(const CXXOperatorCallExpr *S) {
1205   if (S->isTypeDependent()) {
1206     // Type-dependent operator calls are profiled like their underlying
1207     // syntactic operator.
1208     //
1209     // An operator call to operator-> is always implicit, so just skip it. The
1210     // enclosing MemberExpr will profile the actual member access.
1211     if (S->getOperator() == OO_Arrow)
1212       return Visit(S->getArg(0));
1213 
1214     UnaryOperatorKind UnaryOp = UO_Extension;
1215     BinaryOperatorKind BinaryOp = BO_Comma;
1216     Stmt::StmtClass SC = DecodeOperatorCall(S, UnaryOp, BinaryOp);
1217 
1218     ID.AddInteger(SC);
1219     for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
1220       Visit(S->getArg(I));
1221     if (SC == Stmt::UnaryOperatorClass)
1222       ID.AddInteger(UnaryOp);
1223     else if (SC == Stmt::BinaryOperatorClass ||
1224              SC == Stmt::CompoundAssignOperatorClass)
1225       ID.AddInteger(BinaryOp);
1226     else
1227       assert(SC == Stmt::ArraySubscriptExprClass);
1228 
1229     return;
1230   }
1231 
1232   VisitCallExpr(S);
1233   ID.AddInteger(S->getOperator());
1234 }
1235 
1236 void StmtProfiler::VisitCXXMemberCallExpr(const CXXMemberCallExpr *S) {
1237   VisitCallExpr(S);
1238 }
1239 
1240 void StmtProfiler::VisitCUDAKernelCallExpr(const CUDAKernelCallExpr *S) {
1241   VisitCallExpr(S);
1242 }
1243 
1244 void StmtProfiler::VisitAsTypeExpr(const AsTypeExpr *S) {
1245   VisitExpr(S);
1246 }
1247 
1248 void StmtProfiler::VisitCXXNamedCastExpr(const CXXNamedCastExpr *S) {
1249   VisitExplicitCastExpr(S);
1250 }
1251 
1252 void StmtProfiler::VisitCXXStaticCastExpr(const CXXStaticCastExpr *S) {
1253   VisitCXXNamedCastExpr(S);
1254 }
1255 
1256 void StmtProfiler::VisitCXXDynamicCastExpr(const CXXDynamicCastExpr *S) {
1257   VisitCXXNamedCastExpr(S);
1258 }
1259 
1260 void
1261 StmtProfiler::VisitCXXReinterpretCastExpr(const CXXReinterpretCastExpr *S) {
1262   VisitCXXNamedCastExpr(S);
1263 }
1264 
1265 void StmtProfiler::VisitCXXConstCastExpr(const CXXConstCastExpr *S) {
1266   VisitCXXNamedCastExpr(S);
1267 }
1268 
1269 void StmtProfiler::VisitUserDefinedLiteral(const UserDefinedLiteral *S) {
1270   VisitCallExpr(S);
1271 }
1272 
1273 void StmtProfiler::VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *S) {
1274   VisitExpr(S);
1275   ID.AddBoolean(S->getValue());
1276 }
1277 
1278 void StmtProfiler::VisitCXXNullPtrLiteralExpr(const CXXNullPtrLiteralExpr *S) {
1279   VisitExpr(S);
1280 }
1281 
1282 void StmtProfiler::VisitCXXStdInitializerListExpr(
1283     const CXXStdInitializerListExpr *S) {
1284   VisitExpr(S);
1285 }
1286 
1287 void StmtProfiler::VisitCXXTypeidExpr(const CXXTypeidExpr *S) {
1288   VisitExpr(S);
1289   if (S->isTypeOperand())
1290     VisitType(S->getTypeOperandSourceInfo()->getType());
1291 }
1292 
1293 void StmtProfiler::VisitCXXUuidofExpr(const CXXUuidofExpr *S) {
1294   VisitExpr(S);
1295   if (S->isTypeOperand())
1296     VisitType(S->getTypeOperandSourceInfo()->getType());
1297 }
1298 
1299 void StmtProfiler::VisitMSPropertyRefExpr(const MSPropertyRefExpr *S) {
1300   VisitExpr(S);
1301   VisitDecl(S->getPropertyDecl());
1302 }
1303 
1304 void StmtProfiler::VisitMSPropertySubscriptExpr(
1305     const MSPropertySubscriptExpr *S) {
1306   VisitExpr(S);
1307 }
1308 
1309 void StmtProfiler::VisitCXXThisExpr(const CXXThisExpr *S) {
1310   VisitExpr(S);
1311   ID.AddBoolean(S->isImplicit());
1312 }
1313 
1314 void StmtProfiler::VisitCXXThrowExpr(const CXXThrowExpr *S) {
1315   VisitExpr(S);
1316 }
1317 
1318 void StmtProfiler::VisitCXXDefaultArgExpr(const CXXDefaultArgExpr *S) {
1319   VisitExpr(S);
1320   VisitDecl(S->getParam());
1321 }
1322 
1323 void StmtProfiler::VisitCXXDefaultInitExpr(const CXXDefaultInitExpr *S) {
1324   VisitExpr(S);
1325   VisitDecl(S->getField());
1326 }
1327 
1328 void StmtProfiler::VisitCXXBindTemporaryExpr(const CXXBindTemporaryExpr *S) {
1329   VisitExpr(S);
1330   VisitDecl(
1331          const_cast<CXXDestructorDecl *>(S->getTemporary()->getDestructor()));
1332 }
1333 
1334 void StmtProfiler::VisitCXXConstructExpr(const CXXConstructExpr *S) {
1335   VisitExpr(S);
1336   VisitDecl(S->getConstructor());
1337   ID.AddBoolean(S->isElidable());
1338 }
1339 
1340 void StmtProfiler::VisitCXXInheritedCtorInitExpr(
1341     const CXXInheritedCtorInitExpr *S) {
1342   VisitExpr(S);
1343   VisitDecl(S->getConstructor());
1344 }
1345 
1346 void StmtProfiler::VisitCXXFunctionalCastExpr(const CXXFunctionalCastExpr *S) {
1347   VisitExplicitCastExpr(S);
1348 }
1349 
1350 void
1351 StmtProfiler::VisitCXXTemporaryObjectExpr(const CXXTemporaryObjectExpr *S) {
1352   VisitCXXConstructExpr(S);
1353 }
1354 
1355 void
1356 StmtProfiler::VisitLambdaExpr(const LambdaExpr *S) {
1357   VisitExpr(S);
1358   for (LambdaExpr::capture_iterator C = S->explicit_capture_begin(),
1359                                  CEnd = S->explicit_capture_end();
1360        C != CEnd; ++C) {
1361     ID.AddInteger(C->getCaptureKind());
1362     switch (C->getCaptureKind()) {
1363     case LCK_StarThis:
1364     case LCK_This:
1365       break;
1366     case LCK_ByRef:
1367     case LCK_ByCopy:
1368       VisitDecl(C->getCapturedVar());
1369       ID.AddBoolean(C->isPackExpansion());
1370       break;
1371     case LCK_VLAType:
1372       llvm_unreachable("VLA type in explicit captures.");
1373     }
1374   }
1375   // Note: If we actually needed to be able to match lambda
1376   // expressions, we would have to consider parameters and return type
1377   // here, among other things.
1378   VisitStmt(S->getBody());
1379 }
1380 
1381 void
1382 StmtProfiler::VisitCXXScalarValueInitExpr(const CXXScalarValueInitExpr *S) {
1383   VisitExpr(S);
1384 }
1385 
1386 void StmtProfiler::VisitCXXDeleteExpr(const CXXDeleteExpr *S) {
1387   VisitExpr(S);
1388   ID.AddBoolean(S->isGlobalDelete());
1389   ID.AddBoolean(S->isArrayForm());
1390   VisitDecl(S->getOperatorDelete());
1391 }
1392 
1393 void StmtProfiler::VisitCXXNewExpr(const CXXNewExpr *S) {
1394   VisitExpr(S);
1395   VisitType(S->getAllocatedType());
1396   VisitDecl(S->getOperatorNew());
1397   VisitDecl(S->getOperatorDelete());
1398   ID.AddBoolean(S->isArray());
1399   ID.AddInteger(S->getNumPlacementArgs());
1400   ID.AddBoolean(S->isGlobalNew());
1401   ID.AddBoolean(S->isParenTypeId());
1402   ID.AddInteger(S->getInitializationStyle());
1403 }
1404 
1405 void
1406 StmtProfiler::VisitCXXPseudoDestructorExpr(const CXXPseudoDestructorExpr *S) {
1407   VisitExpr(S);
1408   ID.AddBoolean(S->isArrow());
1409   VisitNestedNameSpecifier(S->getQualifier());
1410   ID.AddBoolean(S->getScopeTypeInfo() != nullptr);
1411   if (S->getScopeTypeInfo())
1412     VisitType(S->getScopeTypeInfo()->getType());
1413   ID.AddBoolean(S->getDestroyedTypeInfo() != nullptr);
1414   if (S->getDestroyedTypeInfo())
1415     VisitType(S->getDestroyedType());
1416   else
1417     ID.AddPointer(S->getDestroyedTypeIdentifier());
1418 }
1419 
1420 void StmtProfiler::VisitOverloadExpr(const OverloadExpr *S) {
1421   VisitExpr(S);
1422   VisitNestedNameSpecifier(S->getQualifier());
1423   VisitName(S->getName());
1424   ID.AddBoolean(S->hasExplicitTemplateArgs());
1425   if (S->hasExplicitTemplateArgs())
1426     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1427 }
1428 
1429 void
1430 StmtProfiler::VisitUnresolvedLookupExpr(const UnresolvedLookupExpr *S) {
1431   VisitOverloadExpr(S);
1432 }
1433 
1434 void StmtProfiler::VisitTypeTraitExpr(const TypeTraitExpr *S) {
1435   VisitExpr(S);
1436   ID.AddInteger(S->getTrait());
1437   ID.AddInteger(S->getNumArgs());
1438   for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
1439     VisitType(S->getArg(I)->getType());
1440 }
1441 
1442 void StmtProfiler::VisitArrayTypeTraitExpr(const ArrayTypeTraitExpr *S) {
1443   VisitExpr(S);
1444   ID.AddInteger(S->getTrait());
1445   VisitType(S->getQueriedType());
1446 }
1447 
1448 void StmtProfiler::VisitExpressionTraitExpr(const ExpressionTraitExpr *S) {
1449   VisitExpr(S);
1450   ID.AddInteger(S->getTrait());
1451   VisitExpr(S->getQueriedExpression());
1452 }
1453 
1454 void StmtProfiler::VisitDependentScopeDeclRefExpr(
1455     const DependentScopeDeclRefExpr *S) {
1456   VisitExpr(S);
1457   VisitName(S->getDeclName());
1458   VisitNestedNameSpecifier(S->getQualifier());
1459   ID.AddBoolean(S->hasExplicitTemplateArgs());
1460   if (S->hasExplicitTemplateArgs())
1461     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1462 }
1463 
1464 void StmtProfiler::VisitExprWithCleanups(const ExprWithCleanups *S) {
1465   VisitExpr(S);
1466 }
1467 
1468 void StmtProfiler::VisitCXXUnresolvedConstructExpr(
1469     const CXXUnresolvedConstructExpr *S) {
1470   VisitExpr(S);
1471   VisitType(S->getTypeAsWritten());
1472 }
1473 
1474 void StmtProfiler::VisitCXXDependentScopeMemberExpr(
1475     const CXXDependentScopeMemberExpr *S) {
1476   ID.AddBoolean(S->isImplicitAccess());
1477   if (!S->isImplicitAccess()) {
1478     VisitExpr(S);
1479     ID.AddBoolean(S->isArrow());
1480   }
1481   VisitNestedNameSpecifier(S->getQualifier());
1482   VisitName(S->getMember());
1483   ID.AddBoolean(S->hasExplicitTemplateArgs());
1484   if (S->hasExplicitTemplateArgs())
1485     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1486 }
1487 
1488 void StmtProfiler::VisitUnresolvedMemberExpr(const UnresolvedMemberExpr *S) {
1489   ID.AddBoolean(S->isImplicitAccess());
1490   if (!S->isImplicitAccess()) {
1491     VisitExpr(S);
1492     ID.AddBoolean(S->isArrow());
1493   }
1494   VisitNestedNameSpecifier(S->getQualifier());
1495   VisitName(S->getMemberName());
1496   ID.AddBoolean(S->hasExplicitTemplateArgs());
1497   if (S->hasExplicitTemplateArgs())
1498     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1499 }
1500 
1501 void StmtProfiler::VisitCXXNoexceptExpr(const CXXNoexceptExpr *S) {
1502   VisitExpr(S);
1503 }
1504 
1505 void StmtProfiler::VisitPackExpansionExpr(const PackExpansionExpr *S) {
1506   VisitExpr(S);
1507 }
1508 
1509 void StmtProfiler::VisitSizeOfPackExpr(const SizeOfPackExpr *S) {
1510   VisitExpr(S);
1511   VisitDecl(S->getPack());
1512   if (S->isPartiallySubstituted()) {
1513     auto Args = S->getPartialArguments();
1514     ID.AddInteger(Args.size());
1515     for (const auto &TA : Args)
1516       VisitTemplateArgument(TA);
1517   } else {
1518     ID.AddInteger(0);
1519   }
1520 }
1521 
1522 void StmtProfiler::VisitSubstNonTypeTemplateParmPackExpr(
1523     const SubstNonTypeTemplateParmPackExpr *S) {
1524   VisitExpr(S);
1525   VisitDecl(S->getParameterPack());
1526   VisitTemplateArgument(S->getArgumentPack());
1527 }
1528 
1529 void StmtProfiler::VisitSubstNonTypeTemplateParmExpr(
1530     const SubstNonTypeTemplateParmExpr *E) {
1531   // Profile exactly as the replacement expression.
1532   Visit(E->getReplacement());
1533 }
1534 
1535 void StmtProfiler::VisitFunctionParmPackExpr(const FunctionParmPackExpr *S) {
1536   VisitExpr(S);
1537   VisitDecl(S->getParameterPack());
1538   ID.AddInteger(S->getNumExpansions());
1539   for (FunctionParmPackExpr::iterator I = S->begin(), E = S->end(); I != E; ++I)
1540     VisitDecl(*I);
1541 }
1542 
1543 void StmtProfiler::VisitMaterializeTemporaryExpr(
1544                                            const MaterializeTemporaryExpr *S) {
1545   VisitExpr(S);
1546 }
1547 
1548 void StmtProfiler::VisitCXXFoldExpr(const CXXFoldExpr *S) {
1549   VisitExpr(S);
1550   ID.AddInteger(S->getOperator());
1551 }
1552 
1553 void StmtProfiler::VisitCoroutineBodyStmt(const CoroutineBodyStmt *S) {
1554   VisitStmt(S);
1555 }
1556 
1557 void StmtProfiler::VisitCoreturnStmt(const CoreturnStmt *S) {
1558   VisitStmt(S);
1559 }
1560 
1561 void StmtProfiler::VisitCoawaitExpr(const CoawaitExpr *S) {
1562   VisitExpr(S);
1563 }
1564 
1565 void StmtProfiler::VisitCoyieldExpr(const CoyieldExpr *S) {
1566   VisitExpr(S);
1567 }
1568 
1569 void StmtProfiler::VisitOpaqueValueExpr(const OpaqueValueExpr *E) {
1570   VisitExpr(E);
1571 }
1572 
1573 void StmtProfiler::VisitTypoExpr(const TypoExpr *E) {
1574   VisitExpr(E);
1575 }
1576 
1577 void StmtProfiler::VisitObjCStringLiteral(const ObjCStringLiteral *S) {
1578   VisitExpr(S);
1579 }
1580 
1581 void StmtProfiler::VisitObjCBoxedExpr(const ObjCBoxedExpr *E) {
1582   VisitExpr(E);
1583 }
1584 
1585 void StmtProfiler::VisitObjCArrayLiteral(const ObjCArrayLiteral *E) {
1586   VisitExpr(E);
1587 }
1588 
1589 void StmtProfiler::VisitObjCDictionaryLiteral(const ObjCDictionaryLiteral *E) {
1590   VisitExpr(E);
1591 }
1592 
1593 void StmtProfiler::VisitObjCEncodeExpr(const ObjCEncodeExpr *S) {
1594   VisitExpr(S);
1595   VisitType(S->getEncodedType());
1596 }
1597 
1598 void StmtProfiler::VisitObjCSelectorExpr(const ObjCSelectorExpr *S) {
1599   VisitExpr(S);
1600   VisitName(S->getSelector());
1601 }
1602 
1603 void StmtProfiler::VisitObjCProtocolExpr(const ObjCProtocolExpr *S) {
1604   VisitExpr(S);
1605   VisitDecl(S->getProtocol());
1606 }
1607 
1608 void StmtProfiler::VisitObjCIvarRefExpr(const ObjCIvarRefExpr *S) {
1609   VisitExpr(S);
1610   VisitDecl(S->getDecl());
1611   ID.AddBoolean(S->isArrow());
1612   ID.AddBoolean(S->isFreeIvar());
1613 }
1614 
1615 void StmtProfiler::VisitObjCPropertyRefExpr(const ObjCPropertyRefExpr *S) {
1616   VisitExpr(S);
1617   if (S->isImplicitProperty()) {
1618     VisitDecl(S->getImplicitPropertyGetter());
1619     VisitDecl(S->getImplicitPropertySetter());
1620   } else {
1621     VisitDecl(S->getExplicitProperty());
1622   }
1623   if (S->isSuperReceiver()) {
1624     ID.AddBoolean(S->isSuperReceiver());
1625     VisitType(S->getSuperReceiverType());
1626   }
1627 }
1628 
1629 void StmtProfiler::VisitObjCSubscriptRefExpr(const ObjCSubscriptRefExpr *S) {
1630   VisitExpr(S);
1631   VisitDecl(S->getAtIndexMethodDecl());
1632   VisitDecl(S->setAtIndexMethodDecl());
1633 }
1634 
1635 void StmtProfiler::VisitObjCMessageExpr(const ObjCMessageExpr *S) {
1636   VisitExpr(S);
1637   VisitName(S->getSelector());
1638   VisitDecl(S->getMethodDecl());
1639 }
1640 
1641 void StmtProfiler::VisitObjCIsaExpr(const ObjCIsaExpr *S) {
1642   VisitExpr(S);
1643   ID.AddBoolean(S->isArrow());
1644 }
1645 
1646 void StmtProfiler::VisitObjCBoolLiteralExpr(const ObjCBoolLiteralExpr *S) {
1647   VisitExpr(S);
1648   ID.AddBoolean(S->getValue());
1649 }
1650 
1651 void StmtProfiler::VisitObjCIndirectCopyRestoreExpr(
1652     const ObjCIndirectCopyRestoreExpr *S) {
1653   VisitExpr(S);
1654   ID.AddBoolean(S->shouldCopy());
1655 }
1656 
1657 void StmtProfiler::VisitObjCBridgedCastExpr(const ObjCBridgedCastExpr *S) {
1658   VisitExplicitCastExpr(S);
1659   ID.AddBoolean(S->getBridgeKind());
1660 }
1661 
1662 void StmtProfiler::VisitObjCAvailabilityCheckExpr(
1663     const ObjCAvailabilityCheckExpr *S) {
1664   VisitExpr(S);
1665 }
1666 
1667 void StmtProfiler::VisitDecl(const Decl *D) {
1668   ID.AddInteger(D? D->getKind() : 0);
1669 
1670   if (Canonical && D) {
1671     if (const NonTypeTemplateParmDecl *NTTP =
1672           dyn_cast<NonTypeTemplateParmDecl>(D)) {
1673       ID.AddInteger(NTTP->getDepth());
1674       ID.AddInteger(NTTP->getIndex());
1675       ID.AddBoolean(NTTP->isParameterPack());
1676       VisitType(NTTP->getType());
1677       return;
1678     }
1679 
1680     if (const ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) {
1681       // The Itanium C++ ABI uses the type, scope depth, and scope
1682       // index of a parameter when mangling expressions that involve
1683       // function parameters, so we will use the parameter's type for
1684       // establishing function parameter identity. That way, our
1685       // definition of "equivalent" (per C++ [temp.over.link]) is at
1686       // least as strong as the definition of "equivalent" used for
1687       // name mangling.
1688       VisitType(Parm->getType());
1689       ID.AddInteger(Parm->getFunctionScopeDepth());
1690       ID.AddInteger(Parm->getFunctionScopeIndex());
1691       return;
1692     }
1693 
1694     if (const TemplateTypeParmDecl *TTP =
1695           dyn_cast<TemplateTypeParmDecl>(D)) {
1696       ID.AddInteger(TTP->getDepth());
1697       ID.AddInteger(TTP->getIndex());
1698       ID.AddBoolean(TTP->isParameterPack());
1699       return;
1700     }
1701 
1702     if (const TemplateTemplateParmDecl *TTP =
1703           dyn_cast<TemplateTemplateParmDecl>(D)) {
1704       ID.AddInteger(TTP->getDepth());
1705       ID.AddInteger(TTP->getIndex());
1706       ID.AddBoolean(TTP->isParameterPack());
1707       return;
1708     }
1709   }
1710 
1711   ID.AddPointer(D? D->getCanonicalDecl() : nullptr);
1712 }
1713 
1714 void StmtProfiler::VisitType(QualType T) {
1715   if (Canonical)
1716     T = Context.getCanonicalType(T);
1717 
1718   ID.AddPointer(T.getAsOpaquePtr());
1719 }
1720 
1721 void StmtProfiler::VisitName(DeclarationName Name) {
1722   ID.AddPointer(Name.getAsOpaquePtr());
1723 }
1724 
1725 void StmtProfiler::VisitNestedNameSpecifier(NestedNameSpecifier *NNS) {
1726   if (Canonical)
1727     NNS = Context.getCanonicalNestedNameSpecifier(NNS);
1728   ID.AddPointer(NNS);
1729 }
1730 
1731 void StmtProfiler::VisitTemplateName(TemplateName Name) {
1732   if (Canonical)
1733     Name = Context.getCanonicalTemplateName(Name);
1734 
1735   Name.Profile(ID);
1736 }
1737 
1738 void StmtProfiler::VisitTemplateArguments(const TemplateArgumentLoc *Args,
1739                                           unsigned NumArgs) {
1740   ID.AddInteger(NumArgs);
1741   for (unsigned I = 0; I != NumArgs; ++I)
1742     VisitTemplateArgument(Args[I].getArgument());
1743 }
1744 
1745 void StmtProfiler::VisitTemplateArgument(const TemplateArgument &Arg) {
1746   // Mostly repetitive with TemplateArgument::Profile!
1747   ID.AddInteger(Arg.getKind());
1748   switch (Arg.getKind()) {
1749   case TemplateArgument::Null:
1750     break;
1751 
1752   case TemplateArgument::Type:
1753     VisitType(Arg.getAsType());
1754     break;
1755 
1756   case TemplateArgument::Template:
1757   case TemplateArgument::TemplateExpansion:
1758     VisitTemplateName(Arg.getAsTemplateOrTemplatePattern());
1759     break;
1760 
1761   case TemplateArgument::Declaration:
1762     VisitDecl(Arg.getAsDecl());
1763     break;
1764 
1765   case TemplateArgument::NullPtr:
1766     VisitType(Arg.getNullPtrType());
1767     break;
1768 
1769   case TemplateArgument::Integral:
1770     Arg.getAsIntegral().Profile(ID);
1771     VisitType(Arg.getIntegralType());
1772     break;
1773 
1774   case TemplateArgument::Expression:
1775     Visit(Arg.getAsExpr());
1776     break;
1777 
1778   case TemplateArgument::Pack:
1779     for (const auto &P : Arg.pack_elements())
1780       VisitTemplateArgument(P);
1781     break;
1782   }
1783 }
1784 
1785 void Stmt::Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
1786                    bool Canonical) const {
1787   StmtProfiler Profiler(ID, Context, Canonical);
1788   Profiler.Visit(this);
1789 }
1790