1 //===---- StmtProfile.cpp - Profile implementation for Stmt ASTs ----------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file implements the Stmt::Profile method, which builds a unique bit
11 // representation that identifies a statement/expression.
12 //
13 //===----------------------------------------------------------------------===//
14 #include "clang/AST/ASTContext.h"
15 #include "clang/AST/DeclCXX.h"
16 #include "clang/AST/DeclObjC.h"
17 #include "clang/AST/DeclTemplate.h"
18 #include "clang/AST/Expr.h"
19 #include "clang/AST/ExprCXX.h"
20 #include "clang/AST/ExprObjC.h"
21 #include "clang/AST/ExprOpenMP.h"
22 #include "clang/AST/StmtVisitor.h"
23 #include "llvm/ADT/FoldingSet.h"
24 using namespace clang;
25 
26 namespace {
27   class StmtProfiler : public ConstStmtVisitor<StmtProfiler> {
28     llvm::FoldingSetNodeID &ID;
29     const ASTContext &Context;
30     bool Canonical;
31 
32   public:
33     StmtProfiler(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
34                  bool Canonical)
35       : ID(ID), Context(Context), Canonical(Canonical) { }
36 
37     void VisitStmt(const Stmt *S);
38 
39 #define STMT(Node, Base) void Visit##Node(const Node *S);
40 #include "clang/AST/StmtNodes.inc"
41 
42     /// \brief Visit a declaration that is referenced within an expression
43     /// or statement.
44     void VisitDecl(const Decl *D);
45 
46     /// \brief Visit a type that is referenced within an expression or
47     /// statement.
48     void VisitType(QualType T);
49 
50     /// \brief Visit a name that occurs within an expression or statement.
51     void VisitName(DeclarationName Name);
52 
53     /// \brief Visit a nested-name-specifier that occurs within an expression
54     /// or statement.
55     void VisitNestedNameSpecifier(NestedNameSpecifier *NNS);
56 
57     /// \brief Visit a template name that occurs within an expression or
58     /// statement.
59     void VisitTemplateName(TemplateName Name);
60 
61     /// \brief Visit template arguments that occur within an expression or
62     /// statement.
63     void VisitTemplateArguments(const TemplateArgumentLoc *Args,
64                                 unsigned NumArgs);
65 
66     /// \brief Visit a single template argument.
67     void VisitTemplateArgument(const TemplateArgument &Arg);
68   };
69 }
70 
71 void StmtProfiler::VisitStmt(const Stmt *S) {
72   assert(S && "Requires non-null Stmt pointer");
73   ID.AddInteger(S->getStmtClass());
74   for (const Stmt *SubStmt : S->children()) {
75     if (SubStmt)
76       Visit(SubStmt);
77     else
78       ID.AddInteger(0);
79   }
80 }
81 
82 void StmtProfiler::VisitDeclStmt(const DeclStmt *S) {
83   VisitStmt(S);
84   for (const auto *D : S->decls())
85     VisitDecl(D);
86 }
87 
88 void StmtProfiler::VisitNullStmt(const NullStmt *S) {
89   VisitStmt(S);
90 }
91 
92 void StmtProfiler::VisitCompoundStmt(const CompoundStmt *S) {
93   VisitStmt(S);
94 }
95 
96 void StmtProfiler::VisitSwitchCase(const SwitchCase *S) {
97   VisitStmt(S);
98 }
99 
100 void StmtProfiler::VisitCaseStmt(const CaseStmt *S) {
101   VisitStmt(S);
102 }
103 
104 void StmtProfiler::VisitDefaultStmt(const DefaultStmt *S) {
105   VisitStmt(S);
106 }
107 
108 void StmtProfiler::VisitLabelStmt(const LabelStmt *S) {
109   VisitStmt(S);
110   VisitDecl(S->getDecl());
111 }
112 
113 void StmtProfiler::VisitAttributedStmt(const AttributedStmt *S) {
114   VisitStmt(S);
115   // TODO: maybe visit attributes?
116 }
117 
118 void StmtProfiler::VisitIfStmt(const IfStmt *S) {
119   VisitStmt(S);
120   VisitDecl(S->getConditionVariable());
121 }
122 
123 void StmtProfiler::VisitSwitchStmt(const SwitchStmt *S) {
124   VisitStmt(S);
125   VisitDecl(S->getConditionVariable());
126 }
127 
128 void StmtProfiler::VisitWhileStmt(const WhileStmt *S) {
129   VisitStmt(S);
130   VisitDecl(S->getConditionVariable());
131 }
132 
133 void StmtProfiler::VisitDoStmt(const DoStmt *S) {
134   VisitStmt(S);
135 }
136 
137 void StmtProfiler::VisitForStmt(const ForStmt *S) {
138   VisitStmt(S);
139 }
140 
141 void StmtProfiler::VisitGotoStmt(const GotoStmt *S) {
142   VisitStmt(S);
143   VisitDecl(S->getLabel());
144 }
145 
146 void StmtProfiler::VisitIndirectGotoStmt(const IndirectGotoStmt *S) {
147   VisitStmt(S);
148 }
149 
150 void StmtProfiler::VisitContinueStmt(const ContinueStmt *S) {
151   VisitStmt(S);
152 }
153 
154 void StmtProfiler::VisitBreakStmt(const BreakStmt *S) {
155   VisitStmt(S);
156 }
157 
158 void StmtProfiler::VisitReturnStmt(const ReturnStmt *S) {
159   VisitStmt(S);
160 }
161 
162 void StmtProfiler::VisitGCCAsmStmt(const GCCAsmStmt *S) {
163   VisitStmt(S);
164   ID.AddBoolean(S->isVolatile());
165   ID.AddBoolean(S->isSimple());
166   VisitStringLiteral(S->getAsmString());
167   ID.AddInteger(S->getNumOutputs());
168   for (unsigned I = 0, N = S->getNumOutputs(); I != N; ++I) {
169     ID.AddString(S->getOutputName(I));
170     VisitStringLiteral(S->getOutputConstraintLiteral(I));
171   }
172   ID.AddInteger(S->getNumInputs());
173   for (unsigned I = 0, N = S->getNumInputs(); I != N; ++I) {
174     ID.AddString(S->getInputName(I));
175     VisitStringLiteral(S->getInputConstraintLiteral(I));
176   }
177   ID.AddInteger(S->getNumClobbers());
178   for (unsigned I = 0, N = S->getNumClobbers(); I != N; ++I)
179     VisitStringLiteral(S->getClobberStringLiteral(I));
180 }
181 
182 void StmtProfiler::VisitMSAsmStmt(const MSAsmStmt *S) {
183   // FIXME: Implement MS style inline asm statement profiler.
184   VisitStmt(S);
185 }
186 
187 void StmtProfiler::VisitCXXCatchStmt(const CXXCatchStmt *S) {
188   VisitStmt(S);
189   VisitType(S->getCaughtType());
190 }
191 
192 void StmtProfiler::VisitCXXTryStmt(const CXXTryStmt *S) {
193   VisitStmt(S);
194 }
195 
196 void StmtProfiler::VisitCXXForRangeStmt(const CXXForRangeStmt *S) {
197   VisitStmt(S);
198 }
199 
200 void StmtProfiler::VisitMSDependentExistsStmt(const MSDependentExistsStmt *S) {
201   VisitStmt(S);
202   ID.AddBoolean(S->isIfExists());
203   VisitNestedNameSpecifier(S->getQualifierLoc().getNestedNameSpecifier());
204   VisitName(S->getNameInfo().getName());
205 }
206 
207 void StmtProfiler::VisitSEHTryStmt(const SEHTryStmt *S) {
208   VisitStmt(S);
209 }
210 
211 void StmtProfiler::VisitSEHFinallyStmt(const SEHFinallyStmt *S) {
212   VisitStmt(S);
213 }
214 
215 void StmtProfiler::VisitSEHExceptStmt(const SEHExceptStmt *S) {
216   VisitStmt(S);
217 }
218 
219 void StmtProfiler::VisitSEHLeaveStmt(const SEHLeaveStmt *S) {
220   VisitStmt(S);
221 }
222 
223 void StmtProfiler::VisitCapturedStmt(const CapturedStmt *S) {
224   VisitStmt(S);
225 }
226 
227 void StmtProfiler::VisitObjCForCollectionStmt(const ObjCForCollectionStmt *S) {
228   VisitStmt(S);
229 }
230 
231 void StmtProfiler::VisitObjCAtCatchStmt(const ObjCAtCatchStmt *S) {
232   VisitStmt(S);
233   ID.AddBoolean(S->hasEllipsis());
234   if (S->getCatchParamDecl())
235     VisitType(S->getCatchParamDecl()->getType());
236 }
237 
238 void StmtProfiler::VisitObjCAtFinallyStmt(const ObjCAtFinallyStmt *S) {
239   VisitStmt(S);
240 }
241 
242 void StmtProfiler::VisitObjCAtTryStmt(const ObjCAtTryStmt *S) {
243   VisitStmt(S);
244 }
245 
246 void
247 StmtProfiler::VisitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt *S) {
248   VisitStmt(S);
249 }
250 
251 void StmtProfiler::VisitObjCAtThrowStmt(const ObjCAtThrowStmt *S) {
252   VisitStmt(S);
253 }
254 
255 void
256 StmtProfiler::VisitObjCAutoreleasePoolStmt(const ObjCAutoreleasePoolStmt *S) {
257   VisitStmt(S);
258 }
259 
260 namespace {
261 class OMPClauseProfiler : public ConstOMPClauseVisitor<OMPClauseProfiler> {
262   StmtProfiler *Profiler;
263   /// \brief Process clauses with list of variables.
264   template <typename T>
265   void VisitOMPClauseList(T *Node);
266 
267 public:
268   OMPClauseProfiler(StmtProfiler *P) : Profiler(P) { }
269 #define OPENMP_CLAUSE(Name, Class)                                             \
270   void Visit##Class(const Class *C);
271 #include "clang/Basic/OpenMPKinds.def"
272   void VistOMPClauseWithPreInit(const OMPClauseWithPreInit *C);
273   void VistOMPClauseWithPostUpdate(const OMPClauseWithPostUpdate *C);
274 };
275 
276 void OMPClauseProfiler::VistOMPClauseWithPreInit(
277     const OMPClauseWithPreInit *C) {
278   if (auto *S = C->getPreInitStmt())
279     Profiler->VisitStmt(S);
280 }
281 
282 void OMPClauseProfiler::VistOMPClauseWithPostUpdate(
283     const OMPClauseWithPostUpdate *C) {
284   VistOMPClauseWithPreInit(C);
285   if (auto *E = C->getPostUpdateExpr())
286     Profiler->VisitStmt(E);
287 }
288 
289 void OMPClauseProfiler::VisitOMPIfClause(const OMPIfClause *C) {
290   if (C->getCondition())
291     Profiler->VisitStmt(C->getCondition());
292 }
293 
294 void OMPClauseProfiler::VisitOMPFinalClause(const OMPFinalClause *C) {
295   if (C->getCondition())
296     Profiler->VisitStmt(C->getCondition());
297 }
298 
299 void OMPClauseProfiler::VisitOMPNumThreadsClause(const OMPNumThreadsClause *C) {
300   if (C->getNumThreads())
301     Profiler->VisitStmt(C->getNumThreads());
302 }
303 
304 void OMPClauseProfiler::VisitOMPSafelenClause(const OMPSafelenClause *C) {
305   if (C->getSafelen())
306     Profiler->VisitStmt(C->getSafelen());
307 }
308 
309 void OMPClauseProfiler::VisitOMPSimdlenClause(const OMPSimdlenClause *C) {
310   if (C->getSimdlen())
311     Profiler->VisitStmt(C->getSimdlen());
312 }
313 
314 void OMPClauseProfiler::VisitOMPCollapseClause(const OMPCollapseClause *C) {
315   if (C->getNumForLoops())
316     Profiler->VisitStmt(C->getNumForLoops());
317 }
318 
319 void OMPClauseProfiler::VisitOMPDefaultClause(const OMPDefaultClause *C) { }
320 
321 void OMPClauseProfiler::VisitOMPProcBindClause(const OMPProcBindClause *C) { }
322 
323 void OMPClauseProfiler::VisitOMPScheduleClause(const OMPScheduleClause *C) {
324   VistOMPClauseWithPreInit(C);
325   if (auto *S = C->getChunkSize())
326     Profiler->VisitStmt(S);
327 }
328 
329 void OMPClauseProfiler::VisitOMPOrderedClause(const OMPOrderedClause *C) {
330   if (auto *Num = C->getNumForLoops())
331     Profiler->VisitStmt(Num);
332 }
333 
334 void OMPClauseProfiler::VisitOMPNowaitClause(const OMPNowaitClause *) {}
335 
336 void OMPClauseProfiler::VisitOMPUntiedClause(const OMPUntiedClause *) {}
337 
338 void OMPClauseProfiler::VisitOMPMergeableClause(const OMPMergeableClause *) {}
339 
340 void OMPClauseProfiler::VisitOMPReadClause(const OMPReadClause *) {}
341 
342 void OMPClauseProfiler::VisitOMPWriteClause(const OMPWriteClause *) {}
343 
344 void OMPClauseProfiler::VisitOMPUpdateClause(const OMPUpdateClause *) {}
345 
346 void OMPClauseProfiler::VisitOMPCaptureClause(const OMPCaptureClause *) {}
347 
348 void OMPClauseProfiler::VisitOMPSeqCstClause(const OMPSeqCstClause *) {}
349 
350 void OMPClauseProfiler::VisitOMPThreadsClause(const OMPThreadsClause *) {}
351 
352 void OMPClauseProfiler::VisitOMPSIMDClause(const OMPSIMDClause *) {}
353 
354 void OMPClauseProfiler::VisitOMPNogroupClause(const OMPNogroupClause *) {}
355 
356 template<typename T>
357 void OMPClauseProfiler::VisitOMPClauseList(T *Node) {
358   for (auto *E : Node->varlists()) {
359     if (E)
360       Profiler->VisitStmt(E);
361   }
362 }
363 
364 void OMPClauseProfiler::VisitOMPPrivateClause(const OMPPrivateClause *C) {
365   VisitOMPClauseList(C);
366   for (auto *E : C->private_copies()) {
367     if (E)
368       Profiler->VisitStmt(E);
369   }
370 }
371 void
372 OMPClauseProfiler::VisitOMPFirstprivateClause(const OMPFirstprivateClause *C) {
373   VisitOMPClauseList(C);
374   VistOMPClauseWithPreInit(C);
375   for (auto *E : C->private_copies()) {
376     if (E)
377       Profiler->VisitStmt(E);
378   }
379   for (auto *E : C->inits()) {
380     if (E)
381       Profiler->VisitStmt(E);
382   }
383 }
384 void
385 OMPClauseProfiler::VisitOMPLastprivateClause(const OMPLastprivateClause *C) {
386   VisitOMPClauseList(C);
387   VistOMPClauseWithPostUpdate(C);
388   for (auto *E : C->source_exprs()) {
389     if (E)
390       Profiler->VisitStmt(E);
391   }
392   for (auto *E : C->destination_exprs()) {
393     if (E)
394       Profiler->VisitStmt(E);
395   }
396   for (auto *E : C->assignment_ops()) {
397     if (E)
398       Profiler->VisitStmt(E);
399   }
400 }
401 void OMPClauseProfiler::VisitOMPSharedClause(const OMPSharedClause *C) {
402   VisitOMPClauseList(C);
403 }
404 void OMPClauseProfiler::VisitOMPReductionClause(
405                                          const OMPReductionClause *C) {
406   Profiler->VisitNestedNameSpecifier(
407       C->getQualifierLoc().getNestedNameSpecifier());
408   Profiler->VisitName(C->getNameInfo().getName());
409   VisitOMPClauseList(C);
410   VistOMPClauseWithPostUpdate(C);
411   for (auto *E : C->privates()) {
412     if (E)
413       Profiler->VisitStmt(E);
414   }
415   for (auto *E : C->lhs_exprs()) {
416     if (E)
417       Profiler->VisitStmt(E);
418   }
419   for (auto *E : C->rhs_exprs()) {
420     if (E)
421       Profiler->VisitStmt(E);
422   }
423   for (auto *E : C->reduction_ops()) {
424     if (E)
425       Profiler->VisitStmt(E);
426   }
427 }
428 void OMPClauseProfiler::VisitOMPLinearClause(const OMPLinearClause *C) {
429   VisitOMPClauseList(C);
430   VistOMPClauseWithPostUpdate(C);
431   for (auto *E : C->privates()) {
432     if (E)
433       Profiler->VisitStmt(E);
434   }
435   for (auto *E : C->inits()) {
436     if (E)
437       Profiler->VisitStmt(E);
438   }
439   for (auto *E : C->updates()) {
440     if (E)
441       Profiler->VisitStmt(E);
442   }
443   for (auto *E : C->finals()) {
444     if (E)
445       Profiler->VisitStmt(E);
446   }
447   if (C->getStep())
448     Profiler->VisitStmt(C->getStep());
449   if (C->getCalcStep())
450     Profiler->VisitStmt(C->getCalcStep());
451 }
452 void OMPClauseProfiler::VisitOMPAlignedClause(const OMPAlignedClause *C) {
453   VisitOMPClauseList(C);
454   if (C->getAlignment())
455     Profiler->VisitStmt(C->getAlignment());
456 }
457 void OMPClauseProfiler::VisitOMPCopyinClause(const OMPCopyinClause *C) {
458   VisitOMPClauseList(C);
459   for (auto *E : C->source_exprs()) {
460     if (E)
461       Profiler->VisitStmt(E);
462   }
463   for (auto *E : C->destination_exprs()) {
464     if (E)
465       Profiler->VisitStmt(E);
466   }
467   for (auto *E : C->assignment_ops()) {
468     if (E)
469       Profiler->VisitStmt(E);
470   }
471 }
472 void
473 OMPClauseProfiler::VisitOMPCopyprivateClause(const OMPCopyprivateClause *C) {
474   VisitOMPClauseList(C);
475   for (auto *E : C->source_exprs()) {
476     if (E)
477       Profiler->VisitStmt(E);
478   }
479   for (auto *E : C->destination_exprs()) {
480     if (E)
481       Profiler->VisitStmt(E);
482   }
483   for (auto *E : C->assignment_ops()) {
484     if (E)
485       Profiler->VisitStmt(E);
486   }
487 }
488 void OMPClauseProfiler::VisitOMPFlushClause(const OMPFlushClause *C) {
489   VisitOMPClauseList(C);
490 }
491 void OMPClauseProfiler::VisitOMPDependClause(const OMPDependClause *C) {
492   VisitOMPClauseList(C);
493 }
494 void OMPClauseProfiler::VisitOMPDeviceClause(const OMPDeviceClause *C) {
495   if (C->getDevice())
496     Profiler->VisitStmt(C->getDevice());
497 }
498 void OMPClauseProfiler::VisitOMPMapClause(const OMPMapClause *C) {
499   VisitOMPClauseList(C);
500 }
501 void OMPClauseProfiler::VisitOMPNumTeamsClause(const OMPNumTeamsClause *C) {
502   if (C->getNumTeams())
503     Profiler->VisitStmt(C->getNumTeams());
504 }
505 void OMPClauseProfiler::VisitOMPThreadLimitClause(
506     const OMPThreadLimitClause *C) {
507   if (C->getThreadLimit())
508     Profiler->VisitStmt(C->getThreadLimit());
509 }
510 void OMPClauseProfiler::VisitOMPPriorityClause(const OMPPriorityClause *C) {
511   if (C->getPriority())
512     Profiler->VisitStmt(C->getPriority());
513 }
514 void OMPClauseProfiler::VisitOMPGrainsizeClause(const OMPGrainsizeClause *C) {
515   if (C->getGrainsize())
516     Profiler->VisitStmt(C->getGrainsize());
517 }
518 void OMPClauseProfiler::VisitOMPNumTasksClause(const OMPNumTasksClause *C) {
519   if (C->getNumTasks())
520     Profiler->VisitStmt(C->getNumTasks());
521 }
522 void OMPClauseProfiler::VisitOMPHintClause(const OMPHintClause *C) {
523   if (C->getHint())
524     Profiler->VisitStmt(C->getHint());
525 }
526 void OMPClauseProfiler::VisitOMPToClause(const OMPToClause *C) {
527   VisitOMPClauseList(C);
528 }
529 void OMPClauseProfiler::VisitOMPFromClause(const OMPFromClause *C) {
530   VisitOMPClauseList(C);
531 }
532 }
533 
534 void
535 StmtProfiler::VisitOMPExecutableDirective(const OMPExecutableDirective *S) {
536   VisitStmt(S);
537   OMPClauseProfiler P(this);
538   ArrayRef<OMPClause *> Clauses = S->clauses();
539   for (ArrayRef<OMPClause *>::iterator I = Clauses.begin(), E = Clauses.end();
540        I != E; ++I)
541     if (*I)
542       P.Visit(*I);
543 }
544 
545 void StmtProfiler::VisitOMPLoopDirective(const OMPLoopDirective *S) {
546   VisitOMPExecutableDirective(S);
547 }
548 
549 void StmtProfiler::VisitOMPParallelDirective(const OMPParallelDirective *S) {
550   VisitOMPExecutableDirective(S);
551 }
552 
553 void StmtProfiler::VisitOMPSimdDirective(const OMPSimdDirective *S) {
554   VisitOMPLoopDirective(S);
555 }
556 
557 void StmtProfiler::VisitOMPForDirective(const OMPForDirective *S) {
558   VisitOMPLoopDirective(S);
559 }
560 
561 void StmtProfiler::VisitOMPForSimdDirective(const OMPForSimdDirective *S) {
562   VisitOMPLoopDirective(S);
563 }
564 
565 void StmtProfiler::VisitOMPSectionsDirective(const OMPSectionsDirective *S) {
566   VisitOMPExecutableDirective(S);
567 }
568 
569 void StmtProfiler::VisitOMPSectionDirective(const OMPSectionDirective *S) {
570   VisitOMPExecutableDirective(S);
571 }
572 
573 void StmtProfiler::VisitOMPSingleDirective(const OMPSingleDirective *S) {
574   VisitOMPExecutableDirective(S);
575 }
576 
577 void StmtProfiler::VisitOMPMasterDirective(const OMPMasterDirective *S) {
578   VisitOMPExecutableDirective(S);
579 }
580 
581 void StmtProfiler::VisitOMPCriticalDirective(const OMPCriticalDirective *S) {
582   VisitOMPExecutableDirective(S);
583   VisitName(S->getDirectiveName().getName());
584 }
585 
586 void
587 StmtProfiler::VisitOMPParallelForDirective(const OMPParallelForDirective *S) {
588   VisitOMPLoopDirective(S);
589 }
590 
591 void StmtProfiler::VisitOMPParallelForSimdDirective(
592     const OMPParallelForSimdDirective *S) {
593   VisitOMPLoopDirective(S);
594 }
595 
596 void StmtProfiler::VisitOMPParallelSectionsDirective(
597     const OMPParallelSectionsDirective *S) {
598   VisitOMPExecutableDirective(S);
599 }
600 
601 void StmtProfiler::VisitOMPTaskDirective(const OMPTaskDirective *S) {
602   VisitOMPExecutableDirective(S);
603 }
604 
605 void StmtProfiler::VisitOMPTaskyieldDirective(const OMPTaskyieldDirective *S) {
606   VisitOMPExecutableDirective(S);
607 }
608 
609 void StmtProfiler::VisitOMPBarrierDirective(const OMPBarrierDirective *S) {
610   VisitOMPExecutableDirective(S);
611 }
612 
613 void StmtProfiler::VisitOMPTaskwaitDirective(const OMPTaskwaitDirective *S) {
614   VisitOMPExecutableDirective(S);
615 }
616 
617 void StmtProfiler::VisitOMPTaskgroupDirective(const OMPTaskgroupDirective *S) {
618   VisitOMPExecutableDirective(S);
619 }
620 
621 void StmtProfiler::VisitOMPFlushDirective(const OMPFlushDirective *S) {
622   VisitOMPExecutableDirective(S);
623 }
624 
625 void StmtProfiler::VisitOMPOrderedDirective(const OMPOrderedDirective *S) {
626   VisitOMPExecutableDirective(S);
627 }
628 
629 void StmtProfiler::VisitOMPAtomicDirective(const OMPAtomicDirective *S) {
630   VisitOMPExecutableDirective(S);
631 }
632 
633 void StmtProfiler::VisitOMPTargetDirective(const OMPTargetDirective *S) {
634   VisitOMPExecutableDirective(S);
635 }
636 
637 void StmtProfiler::VisitOMPTargetDataDirective(const OMPTargetDataDirective *S) {
638   VisitOMPExecutableDirective(S);
639 }
640 
641 void StmtProfiler::VisitOMPTargetEnterDataDirective(
642     const OMPTargetEnterDataDirective *S) {
643   VisitOMPExecutableDirective(S);
644 }
645 
646 void StmtProfiler::VisitOMPTargetExitDataDirective(
647     const OMPTargetExitDataDirective *S) {
648   VisitOMPExecutableDirective(S);
649 }
650 
651 void StmtProfiler::VisitOMPTargetParallelDirective(
652     const OMPTargetParallelDirective *S) {
653   VisitOMPExecutableDirective(S);
654 }
655 
656 void StmtProfiler::VisitOMPTargetParallelForDirective(
657     const OMPTargetParallelForDirective *S) {
658   VisitOMPExecutableDirective(S);
659 }
660 
661 void StmtProfiler::VisitOMPTeamsDirective(const OMPTeamsDirective *S) {
662   VisitOMPExecutableDirective(S);
663 }
664 
665 void StmtProfiler::VisitOMPCancellationPointDirective(
666     const OMPCancellationPointDirective *S) {
667   VisitOMPExecutableDirective(S);
668 }
669 
670 void StmtProfiler::VisitOMPCancelDirective(const OMPCancelDirective *S) {
671   VisitOMPExecutableDirective(S);
672 }
673 
674 void StmtProfiler::VisitOMPTaskLoopDirective(const OMPTaskLoopDirective *S) {
675   VisitOMPLoopDirective(S);
676 }
677 
678 void StmtProfiler::VisitOMPTaskLoopSimdDirective(
679     const OMPTaskLoopSimdDirective *S) {
680   VisitOMPLoopDirective(S);
681 }
682 
683 void StmtProfiler::VisitOMPDistributeDirective(
684     const OMPDistributeDirective *S) {
685   VisitOMPLoopDirective(S);
686 }
687 
688 void OMPClauseProfiler::VisitOMPDistScheduleClause(
689     const OMPDistScheduleClause *C) {
690   VistOMPClauseWithPreInit(C);
691   if (auto *S = C->getChunkSize())
692     Profiler->VisitStmt(S);
693 }
694 
695 void OMPClauseProfiler::VisitOMPDefaultmapClause(const OMPDefaultmapClause *) {}
696 
697 void StmtProfiler::VisitOMPTargetUpdateDirective(
698     const OMPTargetUpdateDirective *S) {
699   VisitOMPExecutableDirective(S);
700 }
701 
702 void StmtProfiler::VisitOMPDistributeParallelForDirective(
703     const OMPDistributeParallelForDirective *S) {
704   VisitOMPLoopDirective(S);
705 }
706 
707 void StmtProfiler::VisitOMPDistributeParallelForSimdDirective(
708     const OMPDistributeParallelForSimdDirective *S) {
709   VisitOMPLoopDirective(S);
710 }
711 
712 void StmtProfiler::VisitExpr(const Expr *S) {
713   VisitStmt(S);
714 }
715 
716 void StmtProfiler::VisitDeclRefExpr(const DeclRefExpr *S) {
717   VisitExpr(S);
718   if (!Canonical)
719     VisitNestedNameSpecifier(S->getQualifier());
720   VisitDecl(S->getDecl());
721   if (!Canonical)
722     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
723 }
724 
725 void StmtProfiler::VisitPredefinedExpr(const PredefinedExpr *S) {
726   VisitExpr(S);
727   ID.AddInteger(S->getIdentType());
728 }
729 
730 void StmtProfiler::VisitIntegerLiteral(const IntegerLiteral *S) {
731   VisitExpr(S);
732   S->getValue().Profile(ID);
733   ID.AddInteger(S->getType()->castAs<BuiltinType>()->getKind());
734 }
735 
736 void StmtProfiler::VisitCharacterLiteral(const CharacterLiteral *S) {
737   VisitExpr(S);
738   ID.AddInteger(S->getKind());
739   ID.AddInteger(S->getValue());
740 }
741 
742 void StmtProfiler::VisitFloatingLiteral(const FloatingLiteral *S) {
743   VisitExpr(S);
744   S->getValue().Profile(ID);
745   ID.AddBoolean(S->isExact());
746   ID.AddInteger(S->getType()->castAs<BuiltinType>()->getKind());
747 }
748 
749 void StmtProfiler::VisitImaginaryLiteral(const ImaginaryLiteral *S) {
750   VisitExpr(S);
751 }
752 
753 void StmtProfiler::VisitStringLiteral(const StringLiteral *S) {
754   VisitExpr(S);
755   ID.AddString(S->getBytes());
756   ID.AddInteger(S->getKind());
757 }
758 
759 void StmtProfiler::VisitParenExpr(const ParenExpr *S) {
760   VisitExpr(S);
761 }
762 
763 void StmtProfiler::VisitParenListExpr(const ParenListExpr *S) {
764   VisitExpr(S);
765 }
766 
767 void StmtProfiler::VisitUnaryOperator(const UnaryOperator *S) {
768   VisitExpr(S);
769   ID.AddInteger(S->getOpcode());
770 }
771 
772 void StmtProfiler::VisitOffsetOfExpr(const OffsetOfExpr *S) {
773   VisitType(S->getTypeSourceInfo()->getType());
774   unsigned n = S->getNumComponents();
775   for (unsigned i = 0; i < n; ++i) {
776     const OffsetOfNode &ON = S->getComponent(i);
777     ID.AddInteger(ON.getKind());
778     switch (ON.getKind()) {
779     case OffsetOfNode::Array:
780       // Expressions handled below.
781       break;
782 
783     case OffsetOfNode::Field:
784       VisitDecl(ON.getField());
785       break;
786 
787     case OffsetOfNode::Identifier:
788       ID.AddPointer(ON.getFieldName());
789       break;
790 
791     case OffsetOfNode::Base:
792       // These nodes are implicit, and therefore don't need profiling.
793       break;
794     }
795   }
796 
797   VisitExpr(S);
798 }
799 
800 void
801 StmtProfiler::VisitUnaryExprOrTypeTraitExpr(const UnaryExprOrTypeTraitExpr *S) {
802   VisitExpr(S);
803   ID.AddInteger(S->getKind());
804   if (S->isArgumentType())
805     VisitType(S->getArgumentType());
806 }
807 
808 void StmtProfiler::VisitArraySubscriptExpr(const ArraySubscriptExpr *S) {
809   VisitExpr(S);
810 }
811 
812 void StmtProfiler::VisitOMPArraySectionExpr(const OMPArraySectionExpr *S) {
813   VisitExpr(S);
814 }
815 
816 void StmtProfiler::VisitCallExpr(const CallExpr *S) {
817   VisitExpr(S);
818 }
819 
820 void StmtProfiler::VisitMemberExpr(const MemberExpr *S) {
821   VisitExpr(S);
822   VisitDecl(S->getMemberDecl());
823   if (!Canonical)
824     VisitNestedNameSpecifier(S->getQualifier());
825   ID.AddBoolean(S->isArrow());
826 }
827 
828 void StmtProfiler::VisitCompoundLiteralExpr(const CompoundLiteralExpr *S) {
829   VisitExpr(S);
830   ID.AddBoolean(S->isFileScope());
831 }
832 
833 void StmtProfiler::VisitCastExpr(const CastExpr *S) {
834   VisitExpr(S);
835 }
836 
837 void StmtProfiler::VisitImplicitCastExpr(const ImplicitCastExpr *S) {
838   VisitCastExpr(S);
839   ID.AddInteger(S->getValueKind());
840 }
841 
842 void StmtProfiler::VisitExplicitCastExpr(const ExplicitCastExpr *S) {
843   VisitCastExpr(S);
844   VisitType(S->getTypeAsWritten());
845 }
846 
847 void StmtProfiler::VisitCStyleCastExpr(const CStyleCastExpr *S) {
848   VisitExplicitCastExpr(S);
849 }
850 
851 void StmtProfiler::VisitBinaryOperator(const BinaryOperator *S) {
852   VisitExpr(S);
853   ID.AddInteger(S->getOpcode());
854 }
855 
856 void
857 StmtProfiler::VisitCompoundAssignOperator(const CompoundAssignOperator *S) {
858   VisitBinaryOperator(S);
859 }
860 
861 void StmtProfiler::VisitConditionalOperator(const ConditionalOperator *S) {
862   VisitExpr(S);
863 }
864 
865 void StmtProfiler::VisitBinaryConditionalOperator(
866     const BinaryConditionalOperator *S) {
867   VisitExpr(S);
868 }
869 
870 void StmtProfiler::VisitAddrLabelExpr(const AddrLabelExpr *S) {
871   VisitExpr(S);
872   VisitDecl(S->getLabel());
873 }
874 
875 void StmtProfiler::VisitStmtExpr(const StmtExpr *S) {
876   VisitExpr(S);
877 }
878 
879 void StmtProfiler::VisitShuffleVectorExpr(const ShuffleVectorExpr *S) {
880   VisitExpr(S);
881 }
882 
883 void StmtProfiler::VisitConvertVectorExpr(const ConvertVectorExpr *S) {
884   VisitExpr(S);
885 }
886 
887 void StmtProfiler::VisitChooseExpr(const ChooseExpr *S) {
888   VisitExpr(S);
889 }
890 
891 void StmtProfiler::VisitGNUNullExpr(const GNUNullExpr *S) {
892   VisitExpr(S);
893 }
894 
895 void StmtProfiler::VisitVAArgExpr(const VAArgExpr *S) {
896   VisitExpr(S);
897 }
898 
899 void StmtProfiler::VisitInitListExpr(const InitListExpr *S) {
900   if (S->getSyntacticForm()) {
901     VisitInitListExpr(S->getSyntacticForm());
902     return;
903   }
904 
905   VisitExpr(S);
906 }
907 
908 void StmtProfiler::VisitDesignatedInitExpr(const DesignatedInitExpr *S) {
909   VisitExpr(S);
910   ID.AddBoolean(S->usesGNUSyntax());
911   for (const DesignatedInitExpr::Designator &D : S->designators()) {
912     if (D.isFieldDesignator()) {
913       ID.AddInteger(0);
914       VisitName(D.getFieldName());
915       continue;
916     }
917 
918     if (D.isArrayDesignator()) {
919       ID.AddInteger(1);
920     } else {
921       assert(D.isArrayRangeDesignator());
922       ID.AddInteger(2);
923     }
924     ID.AddInteger(D.getFirstExprIndex());
925   }
926 }
927 
928 // Seems that if VisitInitListExpr() only works on the syntactic form of an
929 // InitListExpr, then a DesignatedInitUpdateExpr is not encountered.
930 void StmtProfiler::VisitDesignatedInitUpdateExpr(
931     const DesignatedInitUpdateExpr *S) {
932   llvm_unreachable("Unexpected DesignatedInitUpdateExpr in syntactic form of "
933                    "initializer");
934 }
935 
936 void StmtProfiler::VisitNoInitExpr(const NoInitExpr *S) {
937   llvm_unreachable("Unexpected NoInitExpr in syntactic form of initializer");
938 }
939 
940 void StmtProfiler::VisitImplicitValueInitExpr(const ImplicitValueInitExpr *S) {
941   VisitExpr(S);
942 }
943 
944 void StmtProfiler::VisitExtVectorElementExpr(const ExtVectorElementExpr *S) {
945   VisitExpr(S);
946   VisitName(&S->getAccessor());
947 }
948 
949 void StmtProfiler::VisitBlockExpr(const BlockExpr *S) {
950   VisitExpr(S);
951   VisitDecl(S->getBlockDecl());
952 }
953 
954 void StmtProfiler::VisitGenericSelectionExpr(const GenericSelectionExpr *S) {
955   VisitExpr(S);
956   for (unsigned i = 0; i != S->getNumAssocs(); ++i) {
957     QualType T = S->getAssocType(i);
958     if (T.isNull())
959       ID.AddPointer(nullptr);
960     else
961       VisitType(T);
962     VisitExpr(S->getAssocExpr(i));
963   }
964 }
965 
966 void StmtProfiler::VisitPseudoObjectExpr(const PseudoObjectExpr *S) {
967   VisitExpr(S);
968   for (PseudoObjectExpr::const_semantics_iterator
969          i = S->semantics_begin(), e = S->semantics_end(); i != e; ++i)
970     // Normally, we would not profile the source expressions of OVEs.
971     if (const OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(*i))
972       Visit(OVE->getSourceExpr());
973 }
974 
975 void StmtProfiler::VisitAtomicExpr(const AtomicExpr *S) {
976   VisitExpr(S);
977   ID.AddInteger(S->getOp());
978 }
979 
980 static Stmt::StmtClass DecodeOperatorCall(const CXXOperatorCallExpr *S,
981                                           UnaryOperatorKind &UnaryOp,
982                                           BinaryOperatorKind &BinaryOp) {
983   switch (S->getOperator()) {
984   case OO_None:
985   case OO_New:
986   case OO_Delete:
987   case OO_Array_New:
988   case OO_Array_Delete:
989   case OO_Arrow:
990   case OO_Call:
991   case OO_Conditional:
992   case OO_Coawait:
993   case NUM_OVERLOADED_OPERATORS:
994     llvm_unreachable("Invalid operator call kind");
995 
996   case OO_Plus:
997     if (S->getNumArgs() == 1) {
998       UnaryOp = UO_Plus;
999       return Stmt::UnaryOperatorClass;
1000     }
1001 
1002     BinaryOp = BO_Add;
1003     return Stmt::BinaryOperatorClass;
1004 
1005   case OO_Minus:
1006     if (S->getNumArgs() == 1) {
1007       UnaryOp = UO_Minus;
1008       return Stmt::UnaryOperatorClass;
1009     }
1010 
1011     BinaryOp = BO_Sub;
1012     return Stmt::BinaryOperatorClass;
1013 
1014   case OO_Star:
1015     if (S->getNumArgs() == 1) {
1016       UnaryOp = UO_Deref;
1017       return Stmt::UnaryOperatorClass;
1018     }
1019 
1020     BinaryOp = BO_Mul;
1021     return Stmt::BinaryOperatorClass;
1022 
1023   case OO_Slash:
1024     BinaryOp = BO_Div;
1025     return Stmt::BinaryOperatorClass;
1026 
1027   case OO_Percent:
1028     BinaryOp = BO_Rem;
1029     return Stmt::BinaryOperatorClass;
1030 
1031   case OO_Caret:
1032     BinaryOp = BO_Xor;
1033     return Stmt::BinaryOperatorClass;
1034 
1035   case OO_Amp:
1036     if (S->getNumArgs() == 1) {
1037       UnaryOp = UO_AddrOf;
1038       return Stmt::UnaryOperatorClass;
1039     }
1040 
1041     BinaryOp = BO_And;
1042     return Stmt::BinaryOperatorClass;
1043 
1044   case OO_Pipe:
1045     BinaryOp = BO_Or;
1046     return Stmt::BinaryOperatorClass;
1047 
1048   case OO_Tilde:
1049     UnaryOp = UO_Not;
1050     return Stmt::UnaryOperatorClass;
1051 
1052   case OO_Exclaim:
1053     UnaryOp = UO_LNot;
1054     return Stmt::UnaryOperatorClass;
1055 
1056   case OO_Equal:
1057     BinaryOp = BO_Assign;
1058     return Stmt::BinaryOperatorClass;
1059 
1060   case OO_Less:
1061     BinaryOp = BO_LT;
1062     return Stmt::BinaryOperatorClass;
1063 
1064   case OO_Greater:
1065     BinaryOp = BO_GT;
1066     return Stmt::BinaryOperatorClass;
1067 
1068   case OO_PlusEqual:
1069     BinaryOp = BO_AddAssign;
1070     return Stmt::CompoundAssignOperatorClass;
1071 
1072   case OO_MinusEqual:
1073     BinaryOp = BO_SubAssign;
1074     return Stmt::CompoundAssignOperatorClass;
1075 
1076   case OO_StarEqual:
1077     BinaryOp = BO_MulAssign;
1078     return Stmt::CompoundAssignOperatorClass;
1079 
1080   case OO_SlashEqual:
1081     BinaryOp = BO_DivAssign;
1082     return Stmt::CompoundAssignOperatorClass;
1083 
1084   case OO_PercentEqual:
1085     BinaryOp = BO_RemAssign;
1086     return Stmt::CompoundAssignOperatorClass;
1087 
1088   case OO_CaretEqual:
1089     BinaryOp = BO_XorAssign;
1090     return Stmt::CompoundAssignOperatorClass;
1091 
1092   case OO_AmpEqual:
1093     BinaryOp = BO_AndAssign;
1094     return Stmt::CompoundAssignOperatorClass;
1095 
1096   case OO_PipeEqual:
1097     BinaryOp = BO_OrAssign;
1098     return Stmt::CompoundAssignOperatorClass;
1099 
1100   case OO_LessLess:
1101     BinaryOp = BO_Shl;
1102     return Stmt::BinaryOperatorClass;
1103 
1104   case OO_GreaterGreater:
1105     BinaryOp = BO_Shr;
1106     return Stmt::BinaryOperatorClass;
1107 
1108   case OO_LessLessEqual:
1109     BinaryOp = BO_ShlAssign;
1110     return Stmt::CompoundAssignOperatorClass;
1111 
1112   case OO_GreaterGreaterEqual:
1113     BinaryOp = BO_ShrAssign;
1114     return Stmt::CompoundAssignOperatorClass;
1115 
1116   case OO_EqualEqual:
1117     BinaryOp = BO_EQ;
1118     return Stmt::BinaryOperatorClass;
1119 
1120   case OO_ExclaimEqual:
1121     BinaryOp = BO_NE;
1122     return Stmt::BinaryOperatorClass;
1123 
1124   case OO_LessEqual:
1125     BinaryOp = BO_LE;
1126     return Stmt::BinaryOperatorClass;
1127 
1128   case OO_GreaterEqual:
1129     BinaryOp = BO_GE;
1130     return Stmt::BinaryOperatorClass;
1131 
1132   case OO_AmpAmp:
1133     BinaryOp = BO_LAnd;
1134     return Stmt::BinaryOperatorClass;
1135 
1136   case OO_PipePipe:
1137     BinaryOp = BO_LOr;
1138     return Stmt::BinaryOperatorClass;
1139 
1140   case OO_PlusPlus:
1141     UnaryOp = S->getNumArgs() == 1? UO_PreInc
1142                                   : UO_PostInc;
1143     return Stmt::UnaryOperatorClass;
1144 
1145   case OO_MinusMinus:
1146     UnaryOp = S->getNumArgs() == 1? UO_PreDec
1147                                   : UO_PostDec;
1148     return Stmt::UnaryOperatorClass;
1149 
1150   case OO_Comma:
1151     BinaryOp = BO_Comma;
1152     return Stmt::BinaryOperatorClass;
1153 
1154   case OO_ArrowStar:
1155     BinaryOp = BO_PtrMemI;
1156     return Stmt::BinaryOperatorClass;
1157 
1158   case OO_Subscript:
1159     return Stmt::ArraySubscriptExprClass;
1160   }
1161 
1162   llvm_unreachable("Invalid overloaded operator expression");
1163 }
1164 
1165 void StmtProfiler::VisitCXXOperatorCallExpr(const CXXOperatorCallExpr *S) {
1166   if (S->isTypeDependent()) {
1167     // Type-dependent operator calls are profiled like their underlying
1168     // syntactic operator.
1169     UnaryOperatorKind UnaryOp = UO_Extension;
1170     BinaryOperatorKind BinaryOp = BO_Comma;
1171     Stmt::StmtClass SC = DecodeOperatorCall(S, UnaryOp, BinaryOp);
1172 
1173     ID.AddInteger(SC);
1174     for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
1175       Visit(S->getArg(I));
1176     if (SC == Stmt::UnaryOperatorClass)
1177       ID.AddInteger(UnaryOp);
1178     else if (SC == Stmt::BinaryOperatorClass ||
1179              SC == Stmt::CompoundAssignOperatorClass)
1180       ID.AddInteger(BinaryOp);
1181     else
1182       assert(SC == Stmt::ArraySubscriptExprClass);
1183 
1184     return;
1185   }
1186 
1187   VisitCallExpr(S);
1188   ID.AddInteger(S->getOperator());
1189 }
1190 
1191 void StmtProfiler::VisitCXXMemberCallExpr(const CXXMemberCallExpr *S) {
1192   VisitCallExpr(S);
1193 }
1194 
1195 void StmtProfiler::VisitCUDAKernelCallExpr(const CUDAKernelCallExpr *S) {
1196   VisitCallExpr(S);
1197 }
1198 
1199 void StmtProfiler::VisitAsTypeExpr(const AsTypeExpr *S) {
1200   VisitExpr(S);
1201 }
1202 
1203 void StmtProfiler::VisitCXXNamedCastExpr(const CXXNamedCastExpr *S) {
1204   VisitExplicitCastExpr(S);
1205 }
1206 
1207 void StmtProfiler::VisitCXXStaticCastExpr(const CXXStaticCastExpr *S) {
1208   VisitCXXNamedCastExpr(S);
1209 }
1210 
1211 void StmtProfiler::VisitCXXDynamicCastExpr(const CXXDynamicCastExpr *S) {
1212   VisitCXXNamedCastExpr(S);
1213 }
1214 
1215 void
1216 StmtProfiler::VisitCXXReinterpretCastExpr(const CXXReinterpretCastExpr *S) {
1217   VisitCXXNamedCastExpr(S);
1218 }
1219 
1220 void StmtProfiler::VisitCXXConstCastExpr(const CXXConstCastExpr *S) {
1221   VisitCXXNamedCastExpr(S);
1222 }
1223 
1224 void StmtProfiler::VisitUserDefinedLiteral(const UserDefinedLiteral *S) {
1225   VisitCallExpr(S);
1226 }
1227 
1228 void StmtProfiler::VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *S) {
1229   VisitExpr(S);
1230   ID.AddBoolean(S->getValue());
1231 }
1232 
1233 void StmtProfiler::VisitCXXNullPtrLiteralExpr(const CXXNullPtrLiteralExpr *S) {
1234   VisitExpr(S);
1235 }
1236 
1237 void StmtProfiler::VisitCXXStdInitializerListExpr(
1238     const CXXStdInitializerListExpr *S) {
1239   VisitExpr(S);
1240 }
1241 
1242 void StmtProfiler::VisitCXXTypeidExpr(const CXXTypeidExpr *S) {
1243   VisitExpr(S);
1244   if (S->isTypeOperand())
1245     VisitType(S->getTypeOperandSourceInfo()->getType());
1246 }
1247 
1248 void StmtProfiler::VisitCXXUuidofExpr(const CXXUuidofExpr *S) {
1249   VisitExpr(S);
1250   if (S->isTypeOperand())
1251     VisitType(S->getTypeOperandSourceInfo()->getType());
1252 }
1253 
1254 void StmtProfiler::VisitMSPropertyRefExpr(const MSPropertyRefExpr *S) {
1255   VisitExpr(S);
1256   VisitDecl(S->getPropertyDecl());
1257 }
1258 
1259 void StmtProfiler::VisitMSPropertySubscriptExpr(
1260     const MSPropertySubscriptExpr *S) {
1261   VisitExpr(S);
1262 }
1263 
1264 void StmtProfiler::VisitCXXThisExpr(const CXXThisExpr *S) {
1265   VisitExpr(S);
1266   ID.AddBoolean(S->isImplicit());
1267 }
1268 
1269 void StmtProfiler::VisitCXXThrowExpr(const CXXThrowExpr *S) {
1270   VisitExpr(S);
1271 }
1272 
1273 void StmtProfiler::VisitCXXDefaultArgExpr(const CXXDefaultArgExpr *S) {
1274   VisitExpr(S);
1275   VisitDecl(S->getParam());
1276 }
1277 
1278 void StmtProfiler::VisitCXXDefaultInitExpr(const CXXDefaultInitExpr *S) {
1279   VisitExpr(S);
1280   VisitDecl(S->getField());
1281 }
1282 
1283 void StmtProfiler::VisitCXXBindTemporaryExpr(const CXXBindTemporaryExpr *S) {
1284   VisitExpr(S);
1285   VisitDecl(
1286          const_cast<CXXDestructorDecl *>(S->getTemporary()->getDestructor()));
1287 }
1288 
1289 void StmtProfiler::VisitCXXConstructExpr(const CXXConstructExpr *S) {
1290   VisitExpr(S);
1291   VisitDecl(S->getConstructor());
1292   ID.AddBoolean(S->isElidable());
1293 }
1294 
1295 void StmtProfiler::VisitCXXInheritedCtorInitExpr(
1296     const CXXInheritedCtorInitExpr *S) {
1297   VisitExpr(S);
1298   VisitDecl(S->getConstructor());
1299 }
1300 
1301 void StmtProfiler::VisitCXXFunctionalCastExpr(const CXXFunctionalCastExpr *S) {
1302   VisitExplicitCastExpr(S);
1303 }
1304 
1305 void
1306 StmtProfiler::VisitCXXTemporaryObjectExpr(const CXXTemporaryObjectExpr *S) {
1307   VisitCXXConstructExpr(S);
1308 }
1309 
1310 void
1311 StmtProfiler::VisitLambdaExpr(const LambdaExpr *S) {
1312   VisitExpr(S);
1313   for (LambdaExpr::capture_iterator C = S->explicit_capture_begin(),
1314                                  CEnd = S->explicit_capture_end();
1315        C != CEnd; ++C) {
1316     ID.AddInteger(C->getCaptureKind());
1317     switch (C->getCaptureKind()) {
1318     case LCK_StarThis:
1319     case LCK_This:
1320       break;
1321     case LCK_ByRef:
1322     case LCK_ByCopy:
1323       VisitDecl(C->getCapturedVar());
1324       ID.AddBoolean(C->isPackExpansion());
1325       break;
1326     case LCK_VLAType:
1327       llvm_unreachable("VLA type in explicit captures.");
1328     }
1329   }
1330   // Note: If we actually needed to be able to match lambda
1331   // expressions, we would have to consider parameters and return type
1332   // here, among other things.
1333   VisitStmt(S->getBody());
1334 }
1335 
1336 void
1337 StmtProfiler::VisitCXXScalarValueInitExpr(const CXXScalarValueInitExpr *S) {
1338   VisitExpr(S);
1339 }
1340 
1341 void StmtProfiler::VisitCXXDeleteExpr(const CXXDeleteExpr *S) {
1342   VisitExpr(S);
1343   ID.AddBoolean(S->isGlobalDelete());
1344   ID.AddBoolean(S->isArrayForm());
1345   VisitDecl(S->getOperatorDelete());
1346 }
1347 
1348 void StmtProfiler::VisitCXXNewExpr(const CXXNewExpr *S) {
1349   VisitExpr(S);
1350   VisitType(S->getAllocatedType());
1351   VisitDecl(S->getOperatorNew());
1352   VisitDecl(S->getOperatorDelete());
1353   ID.AddBoolean(S->isArray());
1354   ID.AddInteger(S->getNumPlacementArgs());
1355   ID.AddBoolean(S->isGlobalNew());
1356   ID.AddBoolean(S->isParenTypeId());
1357   ID.AddInteger(S->getInitializationStyle());
1358 }
1359 
1360 void
1361 StmtProfiler::VisitCXXPseudoDestructorExpr(const CXXPseudoDestructorExpr *S) {
1362   VisitExpr(S);
1363   ID.AddBoolean(S->isArrow());
1364   VisitNestedNameSpecifier(S->getQualifier());
1365   ID.AddBoolean(S->getScopeTypeInfo() != nullptr);
1366   if (S->getScopeTypeInfo())
1367     VisitType(S->getScopeTypeInfo()->getType());
1368   ID.AddBoolean(S->getDestroyedTypeInfo() != nullptr);
1369   if (S->getDestroyedTypeInfo())
1370     VisitType(S->getDestroyedType());
1371   else
1372     ID.AddPointer(S->getDestroyedTypeIdentifier());
1373 }
1374 
1375 void StmtProfiler::VisitOverloadExpr(const OverloadExpr *S) {
1376   VisitExpr(S);
1377   VisitNestedNameSpecifier(S->getQualifier());
1378   VisitName(S->getName());
1379   ID.AddBoolean(S->hasExplicitTemplateArgs());
1380   if (S->hasExplicitTemplateArgs())
1381     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1382 }
1383 
1384 void
1385 StmtProfiler::VisitUnresolvedLookupExpr(const UnresolvedLookupExpr *S) {
1386   VisitOverloadExpr(S);
1387 }
1388 
1389 void StmtProfiler::VisitTypeTraitExpr(const TypeTraitExpr *S) {
1390   VisitExpr(S);
1391   ID.AddInteger(S->getTrait());
1392   ID.AddInteger(S->getNumArgs());
1393   for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
1394     VisitType(S->getArg(I)->getType());
1395 }
1396 
1397 void StmtProfiler::VisitArrayTypeTraitExpr(const ArrayTypeTraitExpr *S) {
1398   VisitExpr(S);
1399   ID.AddInteger(S->getTrait());
1400   VisitType(S->getQueriedType());
1401 }
1402 
1403 void StmtProfiler::VisitExpressionTraitExpr(const ExpressionTraitExpr *S) {
1404   VisitExpr(S);
1405   ID.AddInteger(S->getTrait());
1406   VisitExpr(S->getQueriedExpression());
1407 }
1408 
1409 void StmtProfiler::VisitDependentScopeDeclRefExpr(
1410     const DependentScopeDeclRefExpr *S) {
1411   VisitExpr(S);
1412   VisitName(S->getDeclName());
1413   VisitNestedNameSpecifier(S->getQualifier());
1414   ID.AddBoolean(S->hasExplicitTemplateArgs());
1415   if (S->hasExplicitTemplateArgs())
1416     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1417 }
1418 
1419 void StmtProfiler::VisitExprWithCleanups(const ExprWithCleanups *S) {
1420   VisitExpr(S);
1421 }
1422 
1423 void StmtProfiler::VisitCXXUnresolvedConstructExpr(
1424     const CXXUnresolvedConstructExpr *S) {
1425   VisitExpr(S);
1426   VisitType(S->getTypeAsWritten());
1427 }
1428 
1429 void StmtProfiler::VisitCXXDependentScopeMemberExpr(
1430     const CXXDependentScopeMemberExpr *S) {
1431   ID.AddBoolean(S->isImplicitAccess());
1432   if (!S->isImplicitAccess()) {
1433     VisitExpr(S);
1434     ID.AddBoolean(S->isArrow());
1435   }
1436   VisitNestedNameSpecifier(S->getQualifier());
1437   VisitName(S->getMember());
1438   ID.AddBoolean(S->hasExplicitTemplateArgs());
1439   if (S->hasExplicitTemplateArgs())
1440     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1441 }
1442 
1443 void StmtProfiler::VisitUnresolvedMemberExpr(const UnresolvedMemberExpr *S) {
1444   ID.AddBoolean(S->isImplicitAccess());
1445   if (!S->isImplicitAccess()) {
1446     VisitExpr(S);
1447     ID.AddBoolean(S->isArrow());
1448   }
1449   VisitNestedNameSpecifier(S->getQualifier());
1450   VisitName(S->getMemberName());
1451   ID.AddBoolean(S->hasExplicitTemplateArgs());
1452   if (S->hasExplicitTemplateArgs())
1453     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1454 }
1455 
1456 void StmtProfiler::VisitCXXNoexceptExpr(const CXXNoexceptExpr *S) {
1457   VisitExpr(S);
1458 }
1459 
1460 void StmtProfiler::VisitPackExpansionExpr(const PackExpansionExpr *S) {
1461   VisitExpr(S);
1462 }
1463 
1464 void StmtProfiler::VisitSizeOfPackExpr(const SizeOfPackExpr *S) {
1465   VisitExpr(S);
1466   VisitDecl(S->getPack());
1467   if (S->isPartiallySubstituted()) {
1468     auto Args = S->getPartialArguments();
1469     ID.AddInteger(Args.size());
1470     for (const auto &TA : Args)
1471       VisitTemplateArgument(TA);
1472   } else {
1473     ID.AddInteger(0);
1474   }
1475 }
1476 
1477 void StmtProfiler::VisitSubstNonTypeTemplateParmPackExpr(
1478     const SubstNonTypeTemplateParmPackExpr *S) {
1479   VisitExpr(S);
1480   VisitDecl(S->getParameterPack());
1481   VisitTemplateArgument(S->getArgumentPack());
1482 }
1483 
1484 void StmtProfiler::VisitSubstNonTypeTemplateParmExpr(
1485     const SubstNonTypeTemplateParmExpr *E) {
1486   // Profile exactly as the replacement expression.
1487   Visit(E->getReplacement());
1488 }
1489 
1490 void StmtProfiler::VisitFunctionParmPackExpr(const FunctionParmPackExpr *S) {
1491   VisitExpr(S);
1492   VisitDecl(S->getParameterPack());
1493   ID.AddInteger(S->getNumExpansions());
1494   for (FunctionParmPackExpr::iterator I = S->begin(), E = S->end(); I != E; ++I)
1495     VisitDecl(*I);
1496 }
1497 
1498 void StmtProfiler::VisitMaterializeTemporaryExpr(
1499                                            const MaterializeTemporaryExpr *S) {
1500   VisitExpr(S);
1501 }
1502 
1503 void StmtProfiler::VisitCXXFoldExpr(const CXXFoldExpr *S) {
1504   VisitExpr(S);
1505   ID.AddInteger(S->getOperator());
1506 }
1507 
1508 void StmtProfiler::VisitCoroutineBodyStmt(const CoroutineBodyStmt *S) {
1509   VisitStmt(S);
1510 }
1511 
1512 void StmtProfiler::VisitCoreturnStmt(const CoreturnStmt *S) {
1513   VisitStmt(S);
1514 }
1515 
1516 void StmtProfiler::VisitCoawaitExpr(const CoawaitExpr *S) {
1517   VisitExpr(S);
1518 }
1519 
1520 void StmtProfiler::VisitCoyieldExpr(const CoyieldExpr *S) {
1521   VisitExpr(S);
1522 }
1523 
1524 void StmtProfiler::VisitOpaqueValueExpr(const OpaqueValueExpr *E) {
1525   VisitExpr(E);
1526 }
1527 
1528 void StmtProfiler::VisitTypoExpr(const TypoExpr *E) {
1529   VisitExpr(E);
1530 }
1531 
1532 void StmtProfiler::VisitObjCStringLiteral(const ObjCStringLiteral *S) {
1533   VisitExpr(S);
1534 }
1535 
1536 void StmtProfiler::VisitObjCBoxedExpr(const ObjCBoxedExpr *E) {
1537   VisitExpr(E);
1538 }
1539 
1540 void StmtProfiler::VisitObjCArrayLiteral(const ObjCArrayLiteral *E) {
1541   VisitExpr(E);
1542 }
1543 
1544 void StmtProfiler::VisitObjCDictionaryLiteral(const ObjCDictionaryLiteral *E) {
1545   VisitExpr(E);
1546 }
1547 
1548 void StmtProfiler::VisitObjCEncodeExpr(const ObjCEncodeExpr *S) {
1549   VisitExpr(S);
1550   VisitType(S->getEncodedType());
1551 }
1552 
1553 void StmtProfiler::VisitObjCSelectorExpr(const ObjCSelectorExpr *S) {
1554   VisitExpr(S);
1555   VisitName(S->getSelector());
1556 }
1557 
1558 void StmtProfiler::VisitObjCProtocolExpr(const ObjCProtocolExpr *S) {
1559   VisitExpr(S);
1560   VisitDecl(S->getProtocol());
1561 }
1562 
1563 void StmtProfiler::VisitObjCIvarRefExpr(const ObjCIvarRefExpr *S) {
1564   VisitExpr(S);
1565   VisitDecl(S->getDecl());
1566   ID.AddBoolean(S->isArrow());
1567   ID.AddBoolean(S->isFreeIvar());
1568 }
1569 
1570 void StmtProfiler::VisitObjCPropertyRefExpr(const ObjCPropertyRefExpr *S) {
1571   VisitExpr(S);
1572   if (S->isImplicitProperty()) {
1573     VisitDecl(S->getImplicitPropertyGetter());
1574     VisitDecl(S->getImplicitPropertySetter());
1575   } else {
1576     VisitDecl(S->getExplicitProperty());
1577   }
1578   if (S->isSuperReceiver()) {
1579     ID.AddBoolean(S->isSuperReceiver());
1580     VisitType(S->getSuperReceiverType());
1581   }
1582 }
1583 
1584 void StmtProfiler::VisitObjCSubscriptRefExpr(const ObjCSubscriptRefExpr *S) {
1585   VisitExpr(S);
1586   VisitDecl(S->getAtIndexMethodDecl());
1587   VisitDecl(S->setAtIndexMethodDecl());
1588 }
1589 
1590 void StmtProfiler::VisitObjCMessageExpr(const ObjCMessageExpr *S) {
1591   VisitExpr(S);
1592   VisitName(S->getSelector());
1593   VisitDecl(S->getMethodDecl());
1594 }
1595 
1596 void StmtProfiler::VisitObjCIsaExpr(const ObjCIsaExpr *S) {
1597   VisitExpr(S);
1598   ID.AddBoolean(S->isArrow());
1599 }
1600 
1601 void StmtProfiler::VisitObjCBoolLiteralExpr(const ObjCBoolLiteralExpr *S) {
1602   VisitExpr(S);
1603   ID.AddBoolean(S->getValue());
1604 }
1605 
1606 void StmtProfiler::VisitObjCIndirectCopyRestoreExpr(
1607     const ObjCIndirectCopyRestoreExpr *S) {
1608   VisitExpr(S);
1609   ID.AddBoolean(S->shouldCopy());
1610 }
1611 
1612 void StmtProfiler::VisitObjCBridgedCastExpr(const ObjCBridgedCastExpr *S) {
1613   VisitExplicitCastExpr(S);
1614   ID.AddBoolean(S->getBridgeKind());
1615 }
1616 
1617 void StmtProfiler::VisitDecl(const Decl *D) {
1618   ID.AddInteger(D? D->getKind() : 0);
1619 
1620   if (Canonical && D) {
1621     if (const NonTypeTemplateParmDecl *NTTP =
1622           dyn_cast<NonTypeTemplateParmDecl>(D)) {
1623       ID.AddInteger(NTTP->getDepth());
1624       ID.AddInteger(NTTP->getIndex());
1625       ID.AddBoolean(NTTP->isParameterPack());
1626       VisitType(NTTP->getType());
1627       return;
1628     }
1629 
1630     if (const ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) {
1631       // The Itanium C++ ABI uses the type, scope depth, and scope
1632       // index of a parameter when mangling expressions that involve
1633       // function parameters, so we will use the parameter's type for
1634       // establishing function parameter identity. That way, our
1635       // definition of "equivalent" (per C++ [temp.over.link]) is at
1636       // least as strong as the definition of "equivalent" used for
1637       // name mangling.
1638       VisitType(Parm->getType());
1639       ID.AddInteger(Parm->getFunctionScopeDepth());
1640       ID.AddInteger(Parm->getFunctionScopeIndex());
1641       return;
1642     }
1643 
1644     if (const TemplateTypeParmDecl *TTP =
1645           dyn_cast<TemplateTypeParmDecl>(D)) {
1646       ID.AddInteger(TTP->getDepth());
1647       ID.AddInteger(TTP->getIndex());
1648       ID.AddBoolean(TTP->isParameterPack());
1649       return;
1650     }
1651 
1652     if (const TemplateTemplateParmDecl *TTP =
1653           dyn_cast<TemplateTemplateParmDecl>(D)) {
1654       ID.AddInteger(TTP->getDepth());
1655       ID.AddInteger(TTP->getIndex());
1656       ID.AddBoolean(TTP->isParameterPack());
1657       return;
1658     }
1659   }
1660 
1661   ID.AddPointer(D? D->getCanonicalDecl() : nullptr);
1662 }
1663 
1664 void StmtProfiler::VisitType(QualType T) {
1665   if (Canonical)
1666     T = Context.getCanonicalType(T);
1667 
1668   ID.AddPointer(T.getAsOpaquePtr());
1669 }
1670 
1671 void StmtProfiler::VisitName(DeclarationName Name) {
1672   ID.AddPointer(Name.getAsOpaquePtr());
1673 }
1674 
1675 void StmtProfiler::VisitNestedNameSpecifier(NestedNameSpecifier *NNS) {
1676   if (Canonical)
1677     NNS = Context.getCanonicalNestedNameSpecifier(NNS);
1678   ID.AddPointer(NNS);
1679 }
1680 
1681 void StmtProfiler::VisitTemplateName(TemplateName Name) {
1682   if (Canonical)
1683     Name = Context.getCanonicalTemplateName(Name);
1684 
1685   Name.Profile(ID);
1686 }
1687 
1688 void StmtProfiler::VisitTemplateArguments(const TemplateArgumentLoc *Args,
1689                                           unsigned NumArgs) {
1690   ID.AddInteger(NumArgs);
1691   for (unsigned I = 0; I != NumArgs; ++I)
1692     VisitTemplateArgument(Args[I].getArgument());
1693 }
1694 
1695 void StmtProfiler::VisitTemplateArgument(const TemplateArgument &Arg) {
1696   // Mostly repetitive with TemplateArgument::Profile!
1697   ID.AddInteger(Arg.getKind());
1698   switch (Arg.getKind()) {
1699   case TemplateArgument::Null:
1700     break;
1701 
1702   case TemplateArgument::Type:
1703     VisitType(Arg.getAsType());
1704     break;
1705 
1706   case TemplateArgument::Template:
1707   case TemplateArgument::TemplateExpansion:
1708     VisitTemplateName(Arg.getAsTemplateOrTemplatePattern());
1709     break;
1710 
1711   case TemplateArgument::Declaration:
1712     VisitDecl(Arg.getAsDecl());
1713     break;
1714 
1715   case TemplateArgument::NullPtr:
1716     VisitType(Arg.getNullPtrType());
1717     break;
1718 
1719   case TemplateArgument::Integral:
1720     Arg.getAsIntegral().Profile(ID);
1721     VisitType(Arg.getIntegralType());
1722     break;
1723 
1724   case TemplateArgument::Expression:
1725     Visit(Arg.getAsExpr());
1726     break;
1727 
1728   case TemplateArgument::Pack:
1729     for (const auto &P : Arg.pack_elements())
1730       VisitTemplateArgument(P);
1731     break;
1732   }
1733 }
1734 
1735 void Stmt::Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
1736                    bool Canonical) const {
1737   StmtProfiler Profiler(ID, Context, Canonical);
1738   Profiler.Visit(this);
1739 }
1740