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