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