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