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::VisitExpr(const Expr *S) {
742   VisitStmt(S);
743 }
744 
745 void StmtProfiler::VisitDeclRefExpr(const DeclRefExpr *S) {
746   VisitExpr(S);
747   if (!Canonical)
748     VisitNestedNameSpecifier(S->getQualifier());
749   VisitDecl(S->getDecl());
750   if (!Canonical)
751     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
752 }
753 
754 void StmtProfiler::VisitPredefinedExpr(const PredefinedExpr *S) {
755   VisitExpr(S);
756   ID.AddInteger(S->getIdentType());
757 }
758 
759 void StmtProfiler::VisitIntegerLiteral(const IntegerLiteral *S) {
760   VisitExpr(S);
761   S->getValue().Profile(ID);
762   ID.AddInteger(S->getType()->castAs<BuiltinType>()->getKind());
763 }
764 
765 void StmtProfiler::VisitCharacterLiteral(const CharacterLiteral *S) {
766   VisitExpr(S);
767   ID.AddInteger(S->getKind());
768   ID.AddInteger(S->getValue());
769 }
770 
771 void StmtProfiler::VisitFloatingLiteral(const FloatingLiteral *S) {
772   VisitExpr(S);
773   S->getValue().Profile(ID);
774   ID.AddBoolean(S->isExact());
775   ID.AddInteger(S->getType()->castAs<BuiltinType>()->getKind());
776 }
777 
778 void StmtProfiler::VisitImaginaryLiteral(const ImaginaryLiteral *S) {
779   VisitExpr(S);
780 }
781 
782 void StmtProfiler::VisitStringLiteral(const StringLiteral *S) {
783   VisitExpr(S);
784   ID.AddString(S->getBytes());
785   ID.AddInteger(S->getKind());
786 }
787 
788 void StmtProfiler::VisitParenExpr(const ParenExpr *S) {
789   VisitExpr(S);
790 }
791 
792 void StmtProfiler::VisitParenListExpr(const ParenListExpr *S) {
793   VisitExpr(S);
794 }
795 
796 void StmtProfiler::VisitUnaryOperator(const UnaryOperator *S) {
797   VisitExpr(S);
798   ID.AddInteger(S->getOpcode());
799 }
800 
801 void StmtProfiler::VisitOffsetOfExpr(const OffsetOfExpr *S) {
802   VisitType(S->getTypeSourceInfo()->getType());
803   unsigned n = S->getNumComponents();
804   for (unsigned i = 0; i < n; ++i) {
805     const OffsetOfNode &ON = S->getComponent(i);
806     ID.AddInteger(ON.getKind());
807     switch (ON.getKind()) {
808     case OffsetOfNode::Array:
809       // Expressions handled below.
810       break;
811 
812     case OffsetOfNode::Field:
813       VisitDecl(ON.getField());
814       break;
815 
816     case OffsetOfNode::Identifier:
817       ID.AddPointer(ON.getFieldName());
818       break;
819 
820     case OffsetOfNode::Base:
821       // These nodes are implicit, and therefore don't need profiling.
822       break;
823     }
824   }
825 
826   VisitExpr(S);
827 }
828 
829 void
830 StmtProfiler::VisitUnaryExprOrTypeTraitExpr(const UnaryExprOrTypeTraitExpr *S) {
831   VisitExpr(S);
832   ID.AddInteger(S->getKind());
833   if (S->isArgumentType())
834     VisitType(S->getArgumentType());
835 }
836 
837 void StmtProfiler::VisitArraySubscriptExpr(const ArraySubscriptExpr *S) {
838   VisitExpr(S);
839 }
840 
841 void StmtProfiler::VisitOMPArraySectionExpr(const OMPArraySectionExpr *S) {
842   VisitExpr(S);
843 }
844 
845 void StmtProfiler::VisitCallExpr(const CallExpr *S) {
846   VisitExpr(S);
847 }
848 
849 void StmtProfiler::VisitMemberExpr(const MemberExpr *S) {
850   VisitExpr(S);
851   VisitDecl(S->getMemberDecl());
852   if (!Canonical)
853     VisitNestedNameSpecifier(S->getQualifier());
854   ID.AddBoolean(S->isArrow());
855 }
856 
857 void StmtProfiler::VisitCompoundLiteralExpr(const CompoundLiteralExpr *S) {
858   VisitExpr(S);
859   ID.AddBoolean(S->isFileScope());
860 }
861 
862 void StmtProfiler::VisitCastExpr(const CastExpr *S) {
863   VisitExpr(S);
864 }
865 
866 void StmtProfiler::VisitImplicitCastExpr(const ImplicitCastExpr *S) {
867   VisitCastExpr(S);
868   ID.AddInteger(S->getValueKind());
869 }
870 
871 void StmtProfiler::VisitExplicitCastExpr(const ExplicitCastExpr *S) {
872   VisitCastExpr(S);
873   VisitType(S->getTypeAsWritten());
874 }
875 
876 void StmtProfiler::VisitCStyleCastExpr(const CStyleCastExpr *S) {
877   VisitExplicitCastExpr(S);
878 }
879 
880 void StmtProfiler::VisitBinaryOperator(const BinaryOperator *S) {
881   VisitExpr(S);
882   ID.AddInteger(S->getOpcode());
883 }
884 
885 void
886 StmtProfiler::VisitCompoundAssignOperator(const CompoundAssignOperator *S) {
887   VisitBinaryOperator(S);
888 }
889 
890 void StmtProfiler::VisitConditionalOperator(const ConditionalOperator *S) {
891   VisitExpr(S);
892 }
893 
894 void StmtProfiler::VisitBinaryConditionalOperator(
895     const BinaryConditionalOperator *S) {
896   VisitExpr(S);
897 }
898 
899 void StmtProfiler::VisitAddrLabelExpr(const AddrLabelExpr *S) {
900   VisitExpr(S);
901   VisitDecl(S->getLabel());
902 }
903 
904 void StmtProfiler::VisitStmtExpr(const StmtExpr *S) {
905   VisitExpr(S);
906 }
907 
908 void StmtProfiler::VisitShuffleVectorExpr(const ShuffleVectorExpr *S) {
909   VisitExpr(S);
910 }
911 
912 void StmtProfiler::VisitConvertVectorExpr(const ConvertVectorExpr *S) {
913   VisitExpr(S);
914 }
915 
916 void StmtProfiler::VisitChooseExpr(const ChooseExpr *S) {
917   VisitExpr(S);
918 }
919 
920 void StmtProfiler::VisitGNUNullExpr(const GNUNullExpr *S) {
921   VisitExpr(S);
922 }
923 
924 void StmtProfiler::VisitVAArgExpr(const VAArgExpr *S) {
925   VisitExpr(S);
926 }
927 
928 void StmtProfiler::VisitInitListExpr(const InitListExpr *S) {
929   if (S->getSyntacticForm()) {
930     VisitInitListExpr(S->getSyntacticForm());
931     return;
932   }
933 
934   VisitExpr(S);
935 }
936 
937 void StmtProfiler::VisitDesignatedInitExpr(const DesignatedInitExpr *S) {
938   VisitExpr(S);
939   ID.AddBoolean(S->usesGNUSyntax());
940   for (const DesignatedInitExpr::Designator &D : S->designators()) {
941     if (D.isFieldDesignator()) {
942       ID.AddInteger(0);
943       VisitName(D.getFieldName());
944       continue;
945     }
946 
947     if (D.isArrayDesignator()) {
948       ID.AddInteger(1);
949     } else {
950       assert(D.isArrayRangeDesignator());
951       ID.AddInteger(2);
952     }
953     ID.AddInteger(D.getFirstExprIndex());
954   }
955 }
956 
957 // Seems that if VisitInitListExpr() only works on the syntactic form of an
958 // InitListExpr, then a DesignatedInitUpdateExpr is not encountered.
959 void StmtProfiler::VisitDesignatedInitUpdateExpr(
960     const DesignatedInitUpdateExpr *S) {
961   llvm_unreachable("Unexpected DesignatedInitUpdateExpr in syntactic form of "
962                    "initializer");
963 }
964 
965 void StmtProfiler::VisitNoInitExpr(const NoInitExpr *S) {
966   llvm_unreachable("Unexpected NoInitExpr in syntactic form of initializer");
967 }
968 
969 void StmtProfiler::VisitImplicitValueInitExpr(const ImplicitValueInitExpr *S) {
970   VisitExpr(S);
971 }
972 
973 void StmtProfiler::VisitExtVectorElementExpr(const ExtVectorElementExpr *S) {
974   VisitExpr(S);
975   VisitName(&S->getAccessor());
976 }
977 
978 void StmtProfiler::VisitBlockExpr(const BlockExpr *S) {
979   VisitExpr(S);
980   VisitDecl(S->getBlockDecl());
981 }
982 
983 void StmtProfiler::VisitGenericSelectionExpr(const GenericSelectionExpr *S) {
984   VisitExpr(S);
985   for (unsigned i = 0; i != S->getNumAssocs(); ++i) {
986     QualType T = S->getAssocType(i);
987     if (T.isNull())
988       ID.AddPointer(nullptr);
989     else
990       VisitType(T);
991     VisitExpr(S->getAssocExpr(i));
992   }
993 }
994 
995 void StmtProfiler::VisitPseudoObjectExpr(const PseudoObjectExpr *S) {
996   VisitExpr(S);
997   for (PseudoObjectExpr::const_semantics_iterator
998          i = S->semantics_begin(), e = S->semantics_end(); i != e; ++i)
999     // Normally, we would not profile the source expressions of OVEs.
1000     if (const OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(*i))
1001       Visit(OVE->getSourceExpr());
1002 }
1003 
1004 void StmtProfiler::VisitAtomicExpr(const AtomicExpr *S) {
1005   VisitExpr(S);
1006   ID.AddInteger(S->getOp());
1007 }
1008 
1009 static Stmt::StmtClass DecodeOperatorCall(const CXXOperatorCallExpr *S,
1010                                           UnaryOperatorKind &UnaryOp,
1011                                           BinaryOperatorKind &BinaryOp) {
1012   switch (S->getOperator()) {
1013   case OO_None:
1014   case OO_New:
1015   case OO_Delete:
1016   case OO_Array_New:
1017   case OO_Array_Delete:
1018   case OO_Arrow:
1019   case OO_Call:
1020   case OO_Conditional:
1021   case OO_Coawait:
1022   case NUM_OVERLOADED_OPERATORS:
1023     llvm_unreachable("Invalid operator call kind");
1024 
1025   case OO_Plus:
1026     if (S->getNumArgs() == 1) {
1027       UnaryOp = UO_Plus;
1028       return Stmt::UnaryOperatorClass;
1029     }
1030 
1031     BinaryOp = BO_Add;
1032     return Stmt::BinaryOperatorClass;
1033 
1034   case OO_Minus:
1035     if (S->getNumArgs() == 1) {
1036       UnaryOp = UO_Minus;
1037       return Stmt::UnaryOperatorClass;
1038     }
1039 
1040     BinaryOp = BO_Sub;
1041     return Stmt::BinaryOperatorClass;
1042 
1043   case OO_Star:
1044     if (S->getNumArgs() == 1) {
1045       UnaryOp = UO_Deref;
1046       return Stmt::UnaryOperatorClass;
1047     }
1048 
1049     BinaryOp = BO_Mul;
1050     return Stmt::BinaryOperatorClass;
1051 
1052   case OO_Slash:
1053     BinaryOp = BO_Div;
1054     return Stmt::BinaryOperatorClass;
1055 
1056   case OO_Percent:
1057     BinaryOp = BO_Rem;
1058     return Stmt::BinaryOperatorClass;
1059 
1060   case OO_Caret:
1061     BinaryOp = BO_Xor;
1062     return Stmt::BinaryOperatorClass;
1063 
1064   case OO_Amp:
1065     if (S->getNumArgs() == 1) {
1066       UnaryOp = UO_AddrOf;
1067       return Stmt::UnaryOperatorClass;
1068     }
1069 
1070     BinaryOp = BO_And;
1071     return Stmt::BinaryOperatorClass;
1072 
1073   case OO_Pipe:
1074     BinaryOp = BO_Or;
1075     return Stmt::BinaryOperatorClass;
1076 
1077   case OO_Tilde:
1078     UnaryOp = UO_Not;
1079     return Stmt::UnaryOperatorClass;
1080 
1081   case OO_Exclaim:
1082     UnaryOp = UO_LNot;
1083     return Stmt::UnaryOperatorClass;
1084 
1085   case OO_Equal:
1086     BinaryOp = BO_Assign;
1087     return Stmt::BinaryOperatorClass;
1088 
1089   case OO_Less:
1090     BinaryOp = BO_LT;
1091     return Stmt::BinaryOperatorClass;
1092 
1093   case OO_Greater:
1094     BinaryOp = BO_GT;
1095     return Stmt::BinaryOperatorClass;
1096 
1097   case OO_PlusEqual:
1098     BinaryOp = BO_AddAssign;
1099     return Stmt::CompoundAssignOperatorClass;
1100 
1101   case OO_MinusEqual:
1102     BinaryOp = BO_SubAssign;
1103     return Stmt::CompoundAssignOperatorClass;
1104 
1105   case OO_StarEqual:
1106     BinaryOp = BO_MulAssign;
1107     return Stmt::CompoundAssignOperatorClass;
1108 
1109   case OO_SlashEqual:
1110     BinaryOp = BO_DivAssign;
1111     return Stmt::CompoundAssignOperatorClass;
1112 
1113   case OO_PercentEqual:
1114     BinaryOp = BO_RemAssign;
1115     return Stmt::CompoundAssignOperatorClass;
1116 
1117   case OO_CaretEqual:
1118     BinaryOp = BO_XorAssign;
1119     return Stmt::CompoundAssignOperatorClass;
1120 
1121   case OO_AmpEqual:
1122     BinaryOp = BO_AndAssign;
1123     return Stmt::CompoundAssignOperatorClass;
1124 
1125   case OO_PipeEqual:
1126     BinaryOp = BO_OrAssign;
1127     return Stmt::CompoundAssignOperatorClass;
1128 
1129   case OO_LessLess:
1130     BinaryOp = BO_Shl;
1131     return Stmt::BinaryOperatorClass;
1132 
1133   case OO_GreaterGreater:
1134     BinaryOp = BO_Shr;
1135     return Stmt::BinaryOperatorClass;
1136 
1137   case OO_LessLessEqual:
1138     BinaryOp = BO_ShlAssign;
1139     return Stmt::CompoundAssignOperatorClass;
1140 
1141   case OO_GreaterGreaterEqual:
1142     BinaryOp = BO_ShrAssign;
1143     return Stmt::CompoundAssignOperatorClass;
1144 
1145   case OO_EqualEqual:
1146     BinaryOp = BO_EQ;
1147     return Stmt::BinaryOperatorClass;
1148 
1149   case OO_ExclaimEqual:
1150     BinaryOp = BO_NE;
1151     return Stmt::BinaryOperatorClass;
1152 
1153   case OO_LessEqual:
1154     BinaryOp = BO_LE;
1155     return Stmt::BinaryOperatorClass;
1156 
1157   case OO_GreaterEqual:
1158     BinaryOp = BO_GE;
1159     return Stmt::BinaryOperatorClass;
1160 
1161   case OO_AmpAmp:
1162     BinaryOp = BO_LAnd;
1163     return Stmt::BinaryOperatorClass;
1164 
1165   case OO_PipePipe:
1166     BinaryOp = BO_LOr;
1167     return Stmt::BinaryOperatorClass;
1168 
1169   case OO_PlusPlus:
1170     UnaryOp = S->getNumArgs() == 1? UO_PreInc
1171                                   : UO_PostInc;
1172     return Stmt::UnaryOperatorClass;
1173 
1174   case OO_MinusMinus:
1175     UnaryOp = S->getNumArgs() == 1? UO_PreDec
1176                                   : UO_PostDec;
1177     return Stmt::UnaryOperatorClass;
1178 
1179   case OO_Comma:
1180     BinaryOp = BO_Comma;
1181     return Stmt::BinaryOperatorClass;
1182 
1183   case OO_ArrowStar:
1184     BinaryOp = BO_PtrMemI;
1185     return Stmt::BinaryOperatorClass;
1186 
1187   case OO_Subscript:
1188     return Stmt::ArraySubscriptExprClass;
1189   }
1190 
1191   llvm_unreachable("Invalid overloaded operator expression");
1192 }
1193 
1194 void StmtProfiler::VisitCXXOperatorCallExpr(const CXXOperatorCallExpr *S) {
1195   if (S->isTypeDependent()) {
1196     // Type-dependent operator calls are profiled like their underlying
1197     // syntactic operator.
1198     //
1199     // An operator call to operator-> is always implicit, so just skip it. The
1200     // enclosing MemberExpr will profile the actual member access.
1201     if (S->getOperator() == OO_Arrow)
1202       return Visit(S->getArg(0));
1203 
1204     UnaryOperatorKind UnaryOp = UO_Extension;
1205     BinaryOperatorKind BinaryOp = BO_Comma;
1206     Stmt::StmtClass SC = DecodeOperatorCall(S, UnaryOp, BinaryOp);
1207 
1208     ID.AddInteger(SC);
1209     for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
1210       Visit(S->getArg(I));
1211     if (SC == Stmt::UnaryOperatorClass)
1212       ID.AddInteger(UnaryOp);
1213     else if (SC == Stmt::BinaryOperatorClass ||
1214              SC == Stmt::CompoundAssignOperatorClass)
1215       ID.AddInteger(BinaryOp);
1216     else
1217       assert(SC == Stmt::ArraySubscriptExprClass);
1218 
1219     return;
1220   }
1221 
1222   VisitCallExpr(S);
1223   ID.AddInteger(S->getOperator());
1224 }
1225 
1226 void StmtProfiler::VisitCXXMemberCallExpr(const CXXMemberCallExpr *S) {
1227   VisitCallExpr(S);
1228 }
1229 
1230 void StmtProfiler::VisitCUDAKernelCallExpr(const CUDAKernelCallExpr *S) {
1231   VisitCallExpr(S);
1232 }
1233 
1234 void StmtProfiler::VisitAsTypeExpr(const AsTypeExpr *S) {
1235   VisitExpr(S);
1236 }
1237 
1238 void StmtProfiler::VisitCXXNamedCastExpr(const CXXNamedCastExpr *S) {
1239   VisitExplicitCastExpr(S);
1240 }
1241 
1242 void StmtProfiler::VisitCXXStaticCastExpr(const CXXStaticCastExpr *S) {
1243   VisitCXXNamedCastExpr(S);
1244 }
1245 
1246 void StmtProfiler::VisitCXXDynamicCastExpr(const CXXDynamicCastExpr *S) {
1247   VisitCXXNamedCastExpr(S);
1248 }
1249 
1250 void
1251 StmtProfiler::VisitCXXReinterpretCastExpr(const CXXReinterpretCastExpr *S) {
1252   VisitCXXNamedCastExpr(S);
1253 }
1254 
1255 void StmtProfiler::VisitCXXConstCastExpr(const CXXConstCastExpr *S) {
1256   VisitCXXNamedCastExpr(S);
1257 }
1258 
1259 void StmtProfiler::VisitUserDefinedLiteral(const UserDefinedLiteral *S) {
1260   VisitCallExpr(S);
1261 }
1262 
1263 void StmtProfiler::VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *S) {
1264   VisitExpr(S);
1265   ID.AddBoolean(S->getValue());
1266 }
1267 
1268 void StmtProfiler::VisitCXXNullPtrLiteralExpr(const CXXNullPtrLiteralExpr *S) {
1269   VisitExpr(S);
1270 }
1271 
1272 void StmtProfiler::VisitCXXStdInitializerListExpr(
1273     const CXXStdInitializerListExpr *S) {
1274   VisitExpr(S);
1275 }
1276 
1277 void StmtProfiler::VisitCXXTypeidExpr(const CXXTypeidExpr *S) {
1278   VisitExpr(S);
1279   if (S->isTypeOperand())
1280     VisitType(S->getTypeOperandSourceInfo()->getType());
1281 }
1282 
1283 void StmtProfiler::VisitCXXUuidofExpr(const CXXUuidofExpr *S) {
1284   VisitExpr(S);
1285   if (S->isTypeOperand())
1286     VisitType(S->getTypeOperandSourceInfo()->getType());
1287 }
1288 
1289 void StmtProfiler::VisitMSPropertyRefExpr(const MSPropertyRefExpr *S) {
1290   VisitExpr(S);
1291   VisitDecl(S->getPropertyDecl());
1292 }
1293 
1294 void StmtProfiler::VisitMSPropertySubscriptExpr(
1295     const MSPropertySubscriptExpr *S) {
1296   VisitExpr(S);
1297 }
1298 
1299 void StmtProfiler::VisitCXXThisExpr(const CXXThisExpr *S) {
1300   VisitExpr(S);
1301   ID.AddBoolean(S->isImplicit());
1302 }
1303 
1304 void StmtProfiler::VisitCXXThrowExpr(const CXXThrowExpr *S) {
1305   VisitExpr(S);
1306 }
1307 
1308 void StmtProfiler::VisitCXXDefaultArgExpr(const CXXDefaultArgExpr *S) {
1309   VisitExpr(S);
1310   VisitDecl(S->getParam());
1311 }
1312 
1313 void StmtProfiler::VisitCXXDefaultInitExpr(const CXXDefaultInitExpr *S) {
1314   VisitExpr(S);
1315   VisitDecl(S->getField());
1316 }
1317 
1318 void StmtProfiler::VisitCXXBindTemporaryExpr(const CXXBindTemporaryExpr *S) {
1319   VisitExpr(S);
1320   VisitDecl(
1321          const_cast<CXXDestructorDecl *>(S->getTemporary()->getDestructor()));
1322 }
1323 
1324 void StmtProfiler::VisitCXXConstructExpr(const CXXConstructExpr *S) {
1325   VisitExpr(S);
1326   VisitDecl(S->getConstructor());
1327   ID.AddBoolean(S->isElidable());
1328 }
1329 
1330 void StmtProfiler::VisitCXXInheritedCtorInitExpr(
1331     const CXXInheritedCtorInitExpr *S) {
1332   VisitExpr(S);
1333   VisitDecl(S->getConstructor());
1334 }
1335 
1336 void StmtProfiler::VisitCXXFunctionalCastExpr(const CXXFunctionalCastExpr *S) {
1337   VisitExplicitCastExpr(S);
1338 }
1339 
1340 void
1341 StmtProfiler::VisitCXXTemporaryObjectExpr(const CXXTemporaryObjectExpr *S) {
1342   VisitCXXConstructExpr(S);
1343 }
1344 
1345 void
1346 StmtProfiler::VisitLambdaExpr(const LambdaExpr *S) {
1347   VisitExpr(S);
1348   for (LambdaExpr::capture_iterator C = S->explicit_capture_begin(),
1349                                  CEnd = S->explicit_capture_end();
1350        C != CEnd; ++C) {
1351     ID.AddInteger(C->getCaptureKind());
1352     switch (C->getCaptureKind()) {
1353     case LCK_StarThis:
1354     case LCK_This:
1355       break;
1356     case LCK_ByRef:
1357     case LCK_ByCopy:
1358       VisitDecl(C->getCapturedVar());
1359       ID.AddBoolean(C->isPackExpansion());
1360       break;
1361     case LCK_VLAType:
1362       llvm_unreachable("VLA type in explicit captures.");
1363     }
1364   }
1365   // Note: If we actually needed to be able to match lambda
1366   // expressions, we would have to consider parameters and return type
1367   // here, among other things.
1368   VisitStmt(S->getBody());
1369 }
1370 
1371 void
1372 StmtProfiler::VisitCXXScalarValueInitExpr(const CXXScalarValueInitExpr *S) {
1373   VisitExpr(S);
1374 }
1375 
1376 void StmtProfiler::VisitCXXDeleteExpr(const CXXDeleteExpr *S) {
1377   VisitExpr(S);
1378   ID.AddBoolean(S->isGlobalDelete());
1379   ID.AddBoolean(S->isArrayForm());
1380   VisitDecl(S->getOperatorDelete());
1381 }
1382 
1383 void StmtProfiler::VisitCXXNewExpr(const CXXNewExpr *S) {
1384   VisitExpr(S);
1385   VisitType(S->getAllocatedType());
1386   VisitDecl(S->getOperatorNew());
1387   VisitDecl(S->getOperatorDelete());
1388   ID.AddBoolean(S->isArray());
1389   ID.AddInteger(S->getNumPlacementArgs());
1390   ID.AddBoolean(S->isGlobalNew());
1391   ID.AddBoolean(S->isParenTypeId());
1392   ID.AddInteger(S->getInitializationStyle());
1393 }
1394 
1395 void
1396 StmtProfiler::VisitCXXPseudoDestructorExpr(const CXXPseudoDestructorExpr *S) {
1397   VisitExpr(S);
1398   ID.AddBoolean(S->isArrow());
1399   VisitNestedNameSpecifier(S->getQualifier());
1400   ID.AddBoolean(S->getScopeTypeInfo() != nullptr);
1401   if (S->getScopeTypeInfo())
1402     VisitType(S->getScopeTypeInfo()->getType());
1403   ID.AddBoolean(S->getDestroyedTypeInfo() != nullptr);
1404   if (S->getDestroyedTypeInfo())
1405     VisitType(S->getDestroyedType());
1406   else
1407     ID.AddPointer(S->getDestroyedTypeIdentifier());
1408 }
1409 
1410 void StmtProfiler::VisitOverloadExpr(const OverloadExpr *S) {
1411   VisitExpr(S);
1412   VisitNestedNameSpecifier(S->getQualifier());
1413   VisitName(S->getName());
1414   ID.AddBoolean(S->hasExplicitTemplateArgs());
1415   if (S->hasExplicitTemplateArgs())
1416     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1417 }
1418 
1419 void
1420 StmtProfiler::VisitUnresolvedLookupExpr(const UnresolvedLookupExpr *S) {
1421   VisitOverloadExpr(S);
1422 }
1423 
1424 void StmtProfiler::VisitTypeTraitExpr(const TypeTraitExpr *S) {
1425   VisitExpr(S);
1426   ID.AddInteger(S->getTrait());
1427   ID.AddInteger(S->getNumArgs());
1428   for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
1429     VisitType(S->getArg(I)->getType());
1430 }
1431 
1432 void StmtProfiler::VisitArrayTypeTraitExpr(const ArrayTypeTraitExpr *S) {
1433   VisitExpr(S);
1434   ID.AddInteger(S->getTrait());
1435   VisitType(S->getQueriedType());
1436 }
1437 
1438 void StmtProfiler::VisitExpressionTraitExpr(const ExpressionTraitExpr *S) {
1439   VisitExpr(S);
1440   ID.AddInteger(S->getTrait());
1441   VisitExpr(S->getQueriedExpression());
1442 }
1443 
1444 void StmtProfiler::VisitDependentScopeDeclRefExpr(
1445     const DependentScopeDeclRefExpr *S) {
1446   VisitExpr(S);
1447   VisitName(S->getDeclName());
1448   VisitNestedNameSpecifier(S->getQualifier());
1449   ID.AddBoolean(S->hasExplicitTemplateArgs());
1450   if (S->hasExplicitTemplateArgs())
1451     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1452 }
1453 
1454 void StmtProfiler::VisitExprWithCleanups(const ExprWithCleanups *S) {
1455   VisitExpr(S);
1456 }
1457 
1458 void StmtProfiler::VisitCXXUnresolvedConstructExpr(
1459     const CXXUnresolvedConstructExpr *S) {
1460   VisitExpr(S);
1461   VisitType(S->getTypeAsWritten());
1462 }
1463 
1464 void StmtProfiler::VisitCXXDependentScopeMemberExpr(
1465     const CXXDependentScopeMemberExpr *S) {
1466   ID.AddBoolean(S->isImplicitAccess());
1467   if (!S->isImplicitAccess()) {
1468     VisitExpr(S);
1469     ID.AddBoolean(S->isArrow());
1470   }
1471   VisitNestedNameSpecifier(S->getQualifier());
1472   VisitName(S->getMember());
1473   ID.AddBoolean(S->hasExplicitTemplateArgs());
1474   if (S->hasExplicitTemplateArgs())
1475     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1476 }
1477 
1478 void StmtProfiler::VisitUnresolvedMemberExpr(const UnresolvedMemberExpr *S) {
1479   ID.AddBoolean(S->isImplicitAccess());
1480   if (!S->isImplicitAccess()) {
1481     VisitExpr(S);
1482     ID.AddBoolean(S->isArrow());
1483   }
1484   VisitNestedNameSpecifier(S->getQualifier());
1485   VisitName(S->getMemberName());
1486   ID.AddBoolean(S->hasExplicitTemplateArgs());
1487   if (S->hasExplicitTemplateArgs())
1488     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1489 }
1490 
1491 void StmtProfiler::VisitCXXNoexceptExpr(const CXXNoexceptExpr *S) {
1492   VisitExpr(S);
1493 }
1494 
1495 void StmtProfiler::VisitPackExpansionExpr(const PackExpansionExpr *S) {
1496   VisitExpr(S);
1497 }
1498 
1499 void StmtProfiler::VisitSizeOfPackExpr(const SizeOfPackExpr *S) {
1500   VisitExpr(S);
1501   VisitDecl(S->getPack());
1502   if (S->isPartiallySubstituted()) {
1503     auto Args = S->getPartialArguments();
1504     ID.AddInteger(Args.size());
1505     for (const auto &TA : Args)
1506       VisitTemplateArgument(TA);
1507   } else {
1508     ID.AddInteger(0);
1509   }
1510 }
1511 
1512 void StmtProfiler::VisitSubstNonTypeTemplateParmPackExpr(
1513     const SubstNonTypeTemplateParmPackExpr *S) {
1514   VisitExpr(S);
1515   VisitDecl(S->getParameterPack());
1516   VisitTemplateArgument(S->getArgumentPack());
1517 }
1518 
1519 void StmtProfiler::VisitSubstNonTypeTemplateParmExpr(
1520     const SubstNonTypeTemplateParmExpr *E) {
1521   // Profile exactly as the replacement expression.
1522   Visit(E->getReplacement());
1523 }
1524 
1525 void StmtProfiler::VisitFunctionParmPackExpr(const FunctionParmPackExpr *S) {
1526   VisitExpr(S);
1527   VisitDecl(S->getParameterPack());
1528   ID.AddInteger(S->getNumExpansions());
1529   for (FunctionParmPackExpr::iterator I = S->begin(), E = S->end(); I != E; ++I)
1530     VisitDecl(*I);
1531 }
1532 
1533 void StmtProfiler::VisitMaterializeTemporaryExpr(
1534                                            const MaterializeTemporaryExpr *S) {
1535   VisitExpr(S);
1536 }
1537 
1538 void StmtProfiler::VisitCXXFoldExpr(const CXXFoldExpr *S) {
1539   VisitExpr(S);
1540   ID.AddInteger(S->getOperator());
1541 }
1542 
1543 void StmtProfiler::VisitCoroutineBodyStmt(const CoroutineBodyStmt *S) {
1544   VisitStmt(S);
1545 }
1546 
1547 void StmtProfiler::VisitCoreturnStmt(const CoreturnStmt *S) {
1548   VisitStmt(S);
1549 }
1550 
1551 void StmtProfiler::VisitCoawaitExpr(const CoawaitExpr *S) {
1552   VisitExpr(S);
1553 }
1554 
1555 void StmtProfiler::VisitCoyieldExpr(const CoyieldExpr *S) {
1556   VisitExpr(S);
1557 }
1558 
1559 void StmtProfiler::VisitOpaqueValueExpr(const OpaqueValueExpr *E) {
1560   VisitExpr(E);
1561 }
1562 
1563 void StmtProfiler::VisitTypoExpr(const TypoExpr *E) {
1564   VisitExpr(E);
1565 }
1566 
1567 void StmtProfiler::VisitObjCStringLiteral(const ObjCStringLiteral *S) {
1568   VisitExpr(S);
1569 }
1570 
1571 void StmtProfiler::VisitObjCBoxedExpr(const ObjCBoxedExpr *E) {
1572   VisitExpr(E);
1573 }
1574 
1575 void StmtProfiler::VisitObjCArrayLiteral(const ObjCArrayLiteral *E) {
1576   VisitExpr(E);
1577 }
1578 
1579 void StmtProfiler::VisitObjCDictionaryLiteral(const ObjCDictionaryLiteral *E) {
1580   VisitExpr(E);
1581 }
1582 
1583 void StmtProfiler::VisitObjCEncodeExpr(const ObjCEncodeExpr *S) {
1584   VisitExpr(S);
1585   VisitType(S->getEncodedType());
1586 }
1587 
1588 void StmtProfiler::VisitObjCSelectorExpr(const ObjCSelectorExpr *S) {
1589   VisitExpr(S);
1590   VisitName(S->getSelector());
1591 }
1592 
1593 void StmtProfiler::VisitObjCProtocolExpr(const ObjCProtocolExpr *S) {
1594   VisitExpr(S);
1595   VisitDecl(S->getProtocol());
1596 }
1597 
1598 void StmtProfiler::VisitObjCIvarRefExpr(const ObjCIvarRefExpr *S) {
1599   VisitExpr(S);
1600   VisitDecl(S->getDecl());
1601   ID.AddBoolean(S->isArrow());
1602   ID.AddBoolean(S->isFreeIvar());
1603 }
1604 
1605 void StmtProfiler::VisitObjCPropertyRefExpr(const ObjCPropertyRefExpr *S) {
1606   VisitExpr(S);
1607   if (S->isImplicitProperty()) {
1608     VisitDecl(S->getImplicitPropertyGetter());
1609     VisitDecl(S->getImplicitPropertySetter());
1610   } else {
1611     VisitDecl(S->getExplicitProperty());
1612   }
1613   if (S->isSuperReceiver()) {
1614     ID.AddBoolean(S->isSuperReceiver());
1615     VisitType(S->getSuperReceiverType());
1616   }
1617 }
1618 
1619 void StmtProfiler::VisitObjCSubscriptRefExpr(const ObjCSubscriptRefExpr *S) {
1620   VisitExpr(S);
1621   VisitDecl(S->getAtIndexMethodDecl());
1622   VisitDecl(S->setAtIndexMethodDecl());
1623 }
1624 
1625 void StmtProfiler::VisitObjCMessageExpr(const ObjCMessageExpr *S) {
1626   VisitExpr(S);
1627   VisitName(S->getSelector());
1628   VisitDecl(S->getMethodDecl());
1629 }
1630 
1631 void StmtProfiler::VisitObjCIsaExpr(const ObjCIsaExpr *S) {
1632   VisitExpr(S);
1633   ID.AddBoolean(S->isArrow());
1634 }
1635 
1636 void StmtProfiler::VisitObjCBoolLiteralExpr(const ObjCBoolLiteralExpr *S) {
1637   VisitExpr(S);
1638   ID.AddBoolean(S->getValue());
1639 }
1640 
1641 void StmtProfiler::VisitObjCIndirectCopyRestoreExpr(
1642     const ObjCIndirectCopyRestoreExpr *S) {
1643   VisitExpr(S);
1644   ID.AddBoolean(S->shouldCopy());
1645 }
1646 
1647 void StmtProfiler::VisitObjCBridgedCastExpr(const ObjCBridgedCastExpr *S) {
1648   VisitExplicitCastExpr(S);
1649   ID.AddBoolean(S->getBridgeKind());
1650 }
1651 
1652 void StmtProfiler::VisitObjCAvailabilityCheckExpr(
1653     const ObjCAvailabilityCheckExpr *S) {
1654   VisitExpr(S);
1655 }
1656 
1657 void StmtProfiler::VisitDecl(const Decl *D) {
1658   ID.AddInteger(D? D->getKind() : 0);
1659 
1660   if (Canonical && D) {
1661     if (const NonTypeTemplateParmDecl *NTTP =
1662           dyn_cast<NonTypeTemplateParmDecl>(D)) {
1663       ID.AddInteger(NTTP->getDepth());
1664       ID.AddInteger(NTTP->getIndex());
1665       ID.AddBoolean(NTTP->isParameterPack());
1666       VisitType(NTTP->getType());
1667       return;
1668     }
1669 
1670     if (const ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) {
1671       // The Itanium C++ ABI uses the type, scope depth, and scope
1672       // index of a parameter when mangling expressions that involve
1673       // function parameters, so we will use the parameter's type for
1674       // establishing function parameter identity. That way, our
1675       // definition of "equivalent" (per C++ [temp.over.link]) is at
1676       // least as strong as the definition of "equivalent" used for
1677       // name mangling.
1678       VisitType(Parm->getType());
1679       ID.AddInteger(Parm->getFunctionScopeDepth());
1680       ID.AddInteger(Parm->getFunctionScopeIndex());
1681       return;
1682     }
1683 
1684     if (const TemplateTypeParmDecl *TTP =
1685           dyn_cast<TemplateTypeParmDecl>(D)) {
1686       ID.AddInteger(TTP->getDepth());
1687       ID.AddInteger(TTP->getIndex());
1688       ID.AddBoolean(TTP->isParameterPack());
1689       return;
1690     }
1691 
1692     if (const TemplateTemplateParmDecl *TTP =
1693           dyn_cast<TemplateTemplateParmDecl>(D)) {
1694       ID.AddInteger(TTP->getDepth());
1695       ID.AddInteger(TTP->getIndex());
1696       ID.AddBoolean(TTP->isParameterPack());
1697       return;
1698     }
1699   }
1700 
1701   ID.AddPointer(D? D->getCanonicalDecl() : nullptr);
1702 }
1703 
1704 void StmtProfiler::VisitType(QualType T) {
1705   if (Canonical)
1706     T = Context.getCanonicalType(T);
1707 
1708   ID.AddPointer(T.getAsOpaquePtr());
1709 }
1710 
1711 void StmtProfiler::VisitName(DeclarationName Name) {
1712   ID.AddPointer(Name.getAsOpaquePtr());
1713 }
1714 
1715 void StmtProfiler::VisitNestedNameSpecifier(NestedNameSpecifier *NNS) {
1716   if (Canonical)
1717     NNS = Context.getCanonicalNestedNameSpecifier(NNS);
1718   ID.AddPointer(NNS);
1719 }
1720 
1721 void StmtProfiler::VisitTemplateName(TemplateName Name) {
1722   if (Canonical)
1723     Name = Context.getCanonicalTemplateName(Name);
1724 
1725   Name.Profile(ID);
1726 }
1727 
1728 void StmtProfiler::VisitTemplateArguments(const TemplateArgumentLoc *Args,
1729                                           unsigned NumArgs) {
1730   ID.AddInteger(NumArgs);
1731   for (unsigned I = 0; I != NumArgs; ++I)
1732     VisitTemplateArgument(Args[I].getArgument());
1733 }
1734 
1735 void StmtProfiler::VisitTemplateArgument(const TemplateArgument &Arg) {
1736   // Mostly repetitive with TemplateArgument::Profile!
1737   ID.AddInteger(Arg.getKind());
1738   switch (Arg.getKind()) {
1739   case TemplateArgument::Null:
1740     break;
1741 
1742   case TemplateArgument::Type:
1743     VisitType(Arg.getAsType());
1744     break;
1745 
1746   case TemplateArgument::Template:
1747   case TemplateArgument::TemplateExpansion:
1748     VisitTemplateName(Arg.getAsTemplateOrTemplatePattern());
1749     break;
1750 
1751   case TemplateArgument::Declaration:
1752     VisitDecl(Arg.getAsDecl());
1753     break;
1754 
1755   case TemplateArgument::NullPtr:
1756     VisitType(Arg.getNullPtrType());
1757     break;
1758 
1759   case TemplateArgument::Integral:
1760     Arg.getAsIntegral().Profile(ID);
1761     VisitType(Arg.getIntegralType());
1762     break;
1763 
1764   case TemplateArgument::Expression:
1765     Visit(Arg.getAsExpr());
1766     break;
1767 
1768   case TemplateArgument::Pack:
1769     for (const auto &P : Arg.pack_elements())
1770       VisitTemplateArgument(P);
1771     break;
1772   }
1773 }
1774 
1775 void Stmt::Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
1776                    bool Canonical) const {
1777   StmtProfiler Profiler(ID, Context, Canonical);
1778   Profiler.Visit(this);
1779 }
1780