1 //===---- StmtProfile.cpp - Profile implementation for Stmt ASTs ----------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file implements the Stmt::Profile method, which builds a unique bit
10 // representation that identifies a statement/expression.
11 //
12 //===----------------------------------------------------------------------===//
13 #include "clang/AST/ASTContext.h"
14 #include "clang/AST/DeclCXX.h"
15 #include "clang/AST/DeclObjC.h"
16 #include "clang/AST/DeclTemplate.h"
17 #include "clang/AST/Expr.h"
18 #include "clang/AST/ExprCXX.h"
19 #include "clang/AST/ExprObjC.h"
20 #include "clang/AST/ExprOpenMP.h"
21 #include "clang/AST/ODRHash.h"
22 #include "clang/AST/OpenMPClause.h"
23 #include "clang/AST/StmtVisitor.h"
24 #include "llvm/ADT/FoldingSet.h"
25 using namespace clang;
26 
27 namespace {
28   class StmtProfiler : public ConstStmtVisitor<StmtProfiler> {
29   protected:
30     llvm::FoldingSetNodeID &ID;
31     bool Canonical;
32 
33   public:
34     StmtProfiler(llvm::FoldingSetNodeID &ID, bool Canonical)
35         : ID(ID), Canonical(Canonical) {}
36 
37     virtual ~StmtProfiler() {}
38 
39     void VisitStmt(const Stmt *S);
40 
41     virtual void HandleStmtClass(Stmt::StmtClass SC) = 0;
42 
43 #define STMT(Node, Base) void Visit##Node(const Node *S);
44 #include "clang/AST/StmtNodes.inc"
45 
46     /// Visit a declaration that is referenced within an expression
47     /// or statement.
48     virtual void VisitDecl(const Decl *D) = 0;
49 
50     /// Visit a type that is referenced within an expression or
51     /// statement.
52     virtual void VisitType(QualType T) = 0;
53 
54     /// Visit a name that occurs within an expression or statement.
55     virtual void VisitName(DeclarationName Name, bool TreatAsDecl = false) = 0;
56 
57     /// Visit identifiers that are not in Decl's or Type's.
58     virtual void VisitIdentifierInfo(IdentifierInfo *II) = 0;
59 
60     /// Visit a nested-name-specifier that occurs within an expression
61     /// or statement.
62     virtual void VisitNestedNameSpecifier(NestedNameSpecifier *NNS) = 0;
63 
64     /// Visit a template name that occurs within an expression or
65     /// statement.
66     virtual void VisitTemplateName(TemplateName Name) = 0;
67 
68     /// Visit template arguments that occur within an expression or
69     /// statement.
70     void VisitTemplateArguments(const TemplateArgumentLoc *Args,
71                                 unsigned NumArgs);
72 
73     /// Visit a single template argument.
74     void VisitTemplateArgument(const TemplateArgument &Arg);
75   };
76 
77   class StmtProfilerWithPointers : public StmtProfiler {
78     const ASTContext &Context;
79 
80   public:
81     StmtProfilerWithPointers(llvm::FoldingSetNodeID &ID,
82                              const ASTContext &Context, bool Canonical)
83         : StmtProfiler(ID, Canonical), Context(Context) {}
84   private:
85     void HandleStmtClass(Stmt::StmtClass SC) override {
86       ID.AddInteger(SC);
87     }
88 
89     void VisitDecl(const Decl *D) override {
90       ID.AddInteger(D ? D->getKind() : 0);
91 
92       if (Canonical && D) {
93         if (const NonTypeTemplateParmDecl *NTTP =
94                 dyn_cast<NonTypeTemplateParmDecl>(D)) {
95           ID.AddInteger(NTTP->getDepth());
96           ID.AddInteger(NTTP->getIndex());
97           ID.AddBoolean(NTTP->isParameterPack());
98           VisitType(NTTP->getType());
99           return;
100         }
101 
102         if (const ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) {
103           // The Itanium C++ ABI uses the type, scope depth, and scope
104           // index of a parameter when mangling expressions that involve
105           // function parameters, so we will use the parameter's type for
106           // establishing function parameter identity. That way, our
107           // definition of "equivalent" (per C++ [temp.over.link]) is at
108           // least as strong as the definition of "equivalent" used for
109           // name mangling.
110           VisitType(Parm->getType());
111           ID.AddInteger(Parm->getFunctionScopeDepth());
112           ID.AddInteger(Parm->getFunctionScopeIndex());
113           return;
114         }
115 
116         if (const TemplateTypeParmDecl *TTP =
117                 dyn_cast<TemplateTypeParmDecl>(D)) {
118           ID.AddInteger(TTP->getDepth());
119           ID.AddInteger(TTP->getIndex());
120           ID.AddBoolean(TTP->isParameterPack());
121           return;
122         }
123 
124         if (const TemplateTemplateParmDecl *TTP =
125                 dyn_cast<TemplateTemplateParmDecl>(D)) {
126           ID.AddInteger(TTP->getDepth());
127           ID.AddInteger(TTP->getIndex());
128           ID.AddBoolean(TTP->isParameterPack());
129           return;
130         }
131       }
132 
133       ID.AddPointer(D ? D->getCanonicalDecl() : nullptr);
134     }
135 
136     void VisitType(QualType T) override {
137       if (Canonical && !T.isNull())
138         T = Context.getCanonicalType(T);
139 
140       ID.AddPointer(T.getAsOpaquePtr());
141     }
142 
143     void VisitName(DeclarationName Name, bool /*TreatAsDecl*/) override {
144       ID.AddPointer(Name.getAsOpaquePtr());
145     }
146 
147     void VisitIdentifierInfo(IdentifierInfo *II) override {
148       ID.AddPointer(II);
149     }
150 
151     void VisitNestedNameSpecifier(NestedNameSpecifier *NNS) override {
152       if (Canonical)
153         NNS = Context.getCanonicalNestedNameSpecifier(NNS);
154       ID.AddPointer(NNS);
155     }
156 
157     void VisitTemplateName(TemplateName Name) override {
158       if (Canonical)
159         Name = Context.getCanonicalTemplateName(Name);
160 
161       Name.Profile(ID);
162     }
163   };
164 
165   class StmtProfilerWithoutPointers : public StmtProfiler {
166     ODRHash &Hash;
167   public:
168     StmtProfilerWithoutPointers(llvm::FoldingSetNodeID &ID, ODRHash &Hash)
169         : StmtProfiler(ID, false), Hash(Hash) {}
170 
171   private:
172     void HandleStmtClass(Stmt::StmtClass SC) override {
173       if (SC == Stmt::UnresolvedLookupExprClass) {
174         // Pretend that the name looked up is a Decl due to how templates
175         // handle some Decl lookups.
176         ID.AddInteger(Stmt::DeclRefExprClass);
177       } else {
178         ID.AddInteger(SC);
179       }
180     }
181 
182     void VisitType(QualType T) override {
183       Hash.AddQualType(T);
184     }
185 
186     void VisitName(DeclarationName Name, bool TreatAsDecl) override {
187       if (TreatAsDecl) {
188         // A Decl can be null, so each Decl is preceded by a boolean to
189         // store its nullness.  Add a boolean here to match.
190         ID.AddBoolean(true);
191       }
192       Hash.AddDeclarationName(Name, TreatAsDecl);
193     }
194     void VisitIdentifierInfo(IdentifierInfo *II) override {
195       ID.AddBoolean(II);
196       if (II) {
197         Hash.AddIdentifierInfo(II);
198       }
199     }
200     void VisitDecl(const Decl *D) override {
201       ID.AddBoolean(D);
202       if (D) {
203         Hash.AddDecl(D);
204       }
205     }
206     void VisitTemplateName(TemplateName Name) override {
207       Hash.AddTemplateName(Name);
208     }
209     void VisitNestedNameSpecifier(NestedNameSpecifier *NNS) override {
210       ID.AddBoolean(NNS);
211       if (NNS) {
212         Hash.AddNestedNameSpecifier(NNS);
213       }
214     }
215   };
216 }
217 
218 void StmtProfiler::VisitStmt(const Stmt *S) {
219   assert(S && "Requires non-null Stmt pointer");
220 
221   HandleStmtClass(S->getStmtClass());
222 
223   for (const Stmt *SubStmt : S->children()) {
224     if (SubStmt)
225       Visit(SubStmt);
226     else
227       ID.AddInteger(0);
228   }
229 }
230 
231 void StmtProfiler::VisitDeclStmt(const DeclStmt *S) {
232   VisitStmt(S);
233   for (const auto *D : S->decls())
234     VisitDecl(D);
235 }
236 
237 void StmtProfiler::VisitNullStmt(const NullStmt *S) {
238   VisitStmt(S);
239 }
240 
241 void StmtProfiler::VisitCompoundStmt(const CompoundStmt *S) {
242   VisitStmt(S);
243 }
244 
245 void StmtProfiler::VisitCaseStmt(const CaseStmt *S) {
246   VisitStmt(S);
247 }
248 
249 void StmtProfiler::VisitDefaultStmt(const DefaultStmt *S) {
250   VisitStmt(S);
251 }
252 
253 void StmtProfiler::VisitLabelStmt(const LabelStmt *S) {
254   VisitStmt(S);
255   VisitDecl(S->getDecl());
256 }
257 
258 void StmtProfiler::VisitAttributedStmt(const AttributedStmt *S) {
259   VisitStmt(S);
260   // TODO: maybe visit attributes?
261 }
262 
263 void StmtProfiler::VisitIfStmt(const IfStmt *S) {
264   VisitStmt(S);
265   VisitDecl(S->getConditionVariable());
266 }
267 
268 void StmtProfiler::VisitSwitchStmt(const SwitchStmt *S) {
269   VisitStmt(S);
270   VisitDecl(S->getConditionVariable());
271 }
272 
273 void StmtProfiler::VisitWhileStmt(const WhileStmt *S) {
274   VisitStmt(S);
275   VisitDecl(S->getConditionVariable());
276 }
277 
278 void StmtProfiler::VisitDoStmt(const DoStmt *S) {
279   VisitStmt(S);
280 }
281 
282 void StmtProfiler::VisitForStmt(const ForStmt *S) {
283   VisitStmt(S);
284 }
285 
286 void StmtProfiler::VisitGotoStmt(const GotoStmt *S) {
287   VisitStmt(S);
288   VisitDecl(S->getLabel());
289 }
290 
291 void StmtProfiler::VisitIndirectGotoStmt(const IndirectGotoStmt *S) {
292   VisitStmt(S);
293 }
294 
295 void StmtProfiler::VisitContinueStmt(const ContinueStmt *S) {
296   VisitStmt(S);
297 }
298 
299 void StmtProfiler::VisitBreakStmt(const BreakStmt *S) {
300   VisitStmt(S);
301 }
302 
303 void StmtProfiler::VisitReturnStmt(const ReturnStmt *S) {
304   VisitStmt(S);
305 }
306 
307 void StmtProfiler::VisitGCCAsmStmt(const GCCAsmStmt *S) {
308   VisitStmt(S);
309   ID.AddBoolean(S->isVolatile());
310   ID.AddBoolean(S->isSimple());
311   VisitStringLiteral(S->getAsmString());
312   ID.AddInteger(S->getNumOutputs());
313   for (unsigned I = 0, N = S->getNumOutputs(); I != N; ++I) {
314     ID.AddString(S->getOutputName(I));
315     VisitStringLiteral(S->getOutputConstraintLiteral(I));
316   }
317   ID.AddInteger(S->getNumInputs());
318   for (unsigned I = 0, N = S->getNumInputs(); I != N; ++I) {
319     ID.AddString(S->getInputName(I));
320     VisitStringLiteral(S->getInputConstraintLiteral(I));
321   }
322   ID.AddInteger(S->getNumClobbers());
323   for (unsigned I = 0, N = S->getNumClobbers(); I != N; ++I)
324     VisitStringLiteral(S->getClobberStringLiteral(I));
325   ID.AddInteger(S->getNumLabels());
326   for (auto *L : S->labels())
327     VisitDecl(L->getLabel());
328 }
329 
330 void StmtProfiler::VisitMSAsmStmt(const MSAsmStmt *S) {
331   // FIXME: Implement MS style inline asm statement profiler.
332   VisitStmt(S);
333 }
334 
335 void StmtProfiler::VisitCXXCatchStmt(const CXXCatchStmt *S) {
336   VisitStmt(S);
337   VisitType(S->getCaughtType());
338 }
339 
340 void StmtProfiler::VisitCXXTryStmt(const CXXTryStmt *S) {
341   VisitStmt(S);
342 }
343 
344 void StmtProfiler::VisitCXXForRangeStmt(const CXXForRangeStmt *S) {
345   VisitStmt(S);
346 }
347 
348 void StmtProfiler::VisitMSDependentExistsStmt(const MSDependentExistsStmt *S) {
349   VisitStmt(S);
350   ID.AddBoolean(S->isIfExists());
351   VisitNestedNameSpecifier(S->getQualifierLoc().getNestedNameSpecifier());
352   VisitName(S->getNameInfo().getName());
353 }
354 
355 void StmtProfiler::VisitSEHTryStmt(const SEHTryStmt *S) {
356   VisitStmt(S);
357 }
358 
359 void StmtProfiler::VisitSEHFinallyStmt(const SEHFinallyStmt *S) {
360   VisitStmt(S);
361 }
362 
363 void StmtProfiler::VisitSEHExceptStmt(const SEHExceptStmt *S) {
364   VisitStmt(S);
365 }
366 
367 void StmtProfiler::VisitSEHLeaveStmt(const SEHLeaveStmt *S) {
368   VisitStmt(S);
369 }
370 
371 void StmtProfiler::VisitCapturedStmt(const CapturedStmt *S) {
372   VisitStmt(S);
373 }
374 
375 void StmtProfiler::VisitObjCForCollectionStmt(const ObjCForCollectionStmt *S) {
376   VisitStmt(S);
377 }
378 
379 void StmtProfiler::VisitObjCAtCatchStmt(const ObjCAtCatchStmt *S) {
380   VisitStmt(S);
381   ID.AddBoolean(S->hasEllipsis());
382   if (S->getCatchParamDecl())
383     VisitType(S->getCatchParamDecl()->getType());
384 }
385 
386 void StmtProfiler::VisitObjCAtFinallyStmt(const ObjCAtFinallyStmt *S) {
387   VisitStmt(S);
388 }
389 
390 void StmtProfiler::VisitObjCAtTryStmt(const ObjCAtTryStmt *S) {
391   VisitStmt(S);
392 }
393 
394 void
395 StmtProfiler::VisitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt *S) {
396   VisitStmt(S);
397 }
398 
399 void StmtProfiler::VisitObjCAtThrowStmt(const ObjCAtThrowStmt *S) {
400   VisitStmt(S);
401 }
402 
403 void
404 StmtProfiler::VisitObjCAutoreleasePoolStmt(const ObjCAutoreleasePoolStmt *S) {
405   VisitStmt(S);
406 }
407 
408 namespace {
409 class OMPClauseProfiler : public ConstOMPClauseVisitor<OMPClauseProfiler> {
410   StmtProfiler *Profiler;
411   /// Process clauses with list of variables.
412   template <typename T>
413   void VisitOMPClauseList(T *Node);
414 
415 public:
416   OMPClauseProfiler(StmtProfiler *P) : Profiler(P) { }
417 #define OPENMP_CLAUSE(Name, Class)                                             \
418   void Visit##Class(const Class *C);
419 #include "clang/Basic/OpenMPKinds.def"
420   void VistOMPClauseWithPreInit(const OMPClauseWithPreInit *C);
421   void VistOMPClauseWithPostUpdate(const OMPClauseWithPostUpdate *C);
422 };
423 
424 void OMPClauseProfiler::VistOMPClauseWithPreInit(
425     const OMPClauseWithPreInit *C) {
426   if (auto *S = C->getPreInitStmt())
427     Profiler->VisitStmt(S);
428 }
429 
430 void OMPClauseProfiler::VistOMPClauseWithPostUpdate(
431     const OMPClauseWithPostUpdate *C) {
432   VistOMPClauseWithPreInit(C);
433   if (auto *E = C->getPostUpdateExpr())
434     Profiler->VisitStmt(E);
435 }
436 
437 void OMPClauseProfiler::VisitOMPIfClause(const OMPIfClause *C) {
438   VistOMPClauseWithPreInit(C);
439   if (C->getCondition())
440     Profiler->VisitStmt(C->getCondition());
441 }
442 
443 void OMPClauseProfiler::VisitOMPFinalClause(const OMPFinalClause *C) {
444   VistOMPClauseWithPreInit(C);
445   if (C->getCondition())
446     Profiler->VisitStmt(C->getCondition());
447 }
448 
449 void OMPClauseProfiler::VisitOMPNumThreadsClause(const OMPNumThreadsClause *C) {
450   VistOMPClauseWithPreInit(C);
451   if (C->getNumThreads())
452     Profiler->VisitStmt(C->getNumThreads());
453 }
454 
455 void OMPClauseProfiler::VisitOMPSafelenClause(const OMPSafelenClause *C) {
456   if (C->getSafelen())
457     Profiler->VisitStmt(C->getSafelen());
458 }
459 
460 void OMPClauseProfiler::VisitOMPSimdlenClause(const OMPSimdlenClause *C) {
461   if (C->getSimdlen())
462     Profiler->VisitStmt(C->getSimdlen());
463 }
464 
465 void OMPClauseProfiler::VisitOMPAllocatorClause(const OMPAllocatorClause *C) {
466   if (C->getAllocator())
467     Profiler->VisitStmt(C->getAllocator());
468 }
469 
470 void OMPClauseProfiler::VisitOMPCollapseClause(const OMPCollapseClause *C) {
471   if (C->getNumForLoops())
472     Profiler->VisitStmt(C->getNumForLoops());
473 }
474 
475 void OMPClauseProfiler::VisitOMPDefaultClause(const OMPDefaultClause *C) { }
476 
477 void OMPClauseProfiler::VisitOMPProcBindClause(const OMPProcBindClause *C) { }
478 
479 void OMPClauseProfiler::VisitOMPUnifiedAddressClause(
480     const OMPUnifiedAddressClause *C) {}
481 
482 void OMPClauseProfiler::VisitOMPUnifiedSharedMemoryClause(
483     const OMPUnifiedSharedMemoryClause *C) {}
484 
485 void OMPClauseProfiler::VisitOMPReverseOffloadClause(
486     const OMPReverseOffloadClause *C) {}
487 
488 void OMPClauseProfiler::VisitOMPDynamicAllocatorsClause(
489     const OMPDynamicAllocatorsClause *C) {}
490 
491 void OMPClauseProfiler::VisitOMPAtomicDefaultMemOrderClause(
492     const OMPAtomicDefaultMemOrderClause *C) {}
493 
494 void OMPClauseProfiler::VisitOMPScheduleClause(const OMPScheduleClause *C) {
495   VistOMPClauseWithPreInit(C);
496   if (auto *S = C->getChunkSize())
497     Profiler->VisitStmt(S);
498 }
499 
500 void OMPClauseProfiler::VisitOMPOrderedClause(const OMPOrderedClause *C) {
501   if (auto *Num = C->getNumForLoops())
502     Profiler->VisitStmt(Num);
503 }
504 
505 void OMPClauseProfiler::VisitOMPNowaitClause(const OMPNowaitClause *) {}
506 
507 void OMPClauseProfiler::VisitOMPUntiedClause(const OMPUntiedClause *) {}
508 
509 void OMPClauseProfiler::VisitOMPMergeableClause(const OMPMergeableClause *) {}
510 
511 void OMPClauseProfiler::VisitOMPReadClause(const OMPReadClause *) {}
512 
513 void OMPClauseProfiler::VisitOMPWriteClause(const OMPWriteClause *) {}
514 
515 void OMPClauseProfiler::VisitOMPUpdateClause(const OMPUpdateClause *) {}
516 
517 void OMPClauseProfiler::VisitOMPCaptureClause(const OMPCaptureClause *) {}
518 
519 void OMPClauseProfiler::VisitOMPSeqCstClause(const OMPSeqCstClause *) {}
520 
521 void OMPClauseProfiler::VisitOMPAcqRelClause(const OMPAcqRelClause *) {}
522 
523 void OMPClauseProfiler::VisitOMPAcquireClause(const OMPAcquireClause *) {}
524 
525 void OMPClauseProfiler::VisitOMPReleaseClause(const OMPReleaseClause *) {}
526 
527 void OMPClauseProfiler::VisitOMPRelaxedClause(const OMPRelaxedClause *) {}
528 
529 void OMPClauseProfiler::VisitOMPThreadsClause(const OMPThreadsClause *) {}
530 
531 void OMPClauseProfiler::VisitOMPSIMDClause(const OMPSIMDClause *) {}
532 
533 void OMPClauseProfiler::VisitOMPNogroupClause(const OMPNogroupClause *) {}
534 
535 void OMPClauseProfiler::VisitOMPDestroyClause(const OMPDestroyClause *) {}
536 
537 template<typename T>
538 void OMPClauseProfiler::VisitOMPClauseList(T *Node) {
539   for (auto *E : Node->varlists()) {
540     if (E)
541       Profiler->VisitStmt(E);
542   }
543 }
544 
545 void OMPClauseProfiler::VisitOMPPrivateClause(const OMPPrivateClause *C) {
546   VisitOMPClauseList(C);
547   for (auto *E : C->private_copies()) {
548     if (E)
549       Profiler->VisitStmt(E);
550   }
551 }
552 void
553 OMPClauseProfiler::VisitOMPFirstprivateClause(const OMPFirstprivateClause *C) {
554   VisitOMPClauseList(C);
555   VistOMPClauseWithPreInit(C);
556   for (auto *E : C->private_copies()) {
557     if (E)
558       Profiler->VisitStmt(E);
559   }
560   for (auto *E : C->inits()) {
561     if (E)
562       Profiler->VisitStmt(E);
563   }
564 }
565 void
566 OMPClauseProfiler::VisitOMPLastprivateClause(const OMPLastprivateClause *C) {
567   VisitOMPClauseList(C);
568   VistOMPClauseWithPostUpdate(C);
569   for (auto *E : C->source_exprs()) {
570     if (E)
571       Profiler->VisitStmt(E);
572   }
573   for (auto *E : C->destination_exprs()) {
574     if (E)
575       Profiler->VisitStmt(E);
576   }
577   for (auto *E : C->assignment_ops()) {
578     if (E)
579       Profiler->VisitStmt(E);
580   }
581 }
582 void OMPClauseProfiler::VisitOMPSharedClause(const OMPSharedClause *C) {
583   VisitOMPClauseList(C);
584 }
585 void OMPClauseProfiler::VisitOMPReductionClause(
586                                          const OMPReductionClause *C) {
587   Profiler->VisitNestedNameSpecifier(
588       C->getQualifierLoc().getNestedNameSpecifier());
589   Profiler->VisitName(C->getNameInfo().getName());
590   VisitOMPClauseList(C);
591   VistOMPClauseWithPostUpdate(C);
592   for (auto *E : C->privates()) {
593     if (E)
594       Profiler->VisitStmt(E);
595   }
596   for (auto *E : C->lhs_exprs()) {
597     if (E)
598       Profiler->VisitStmt(E);
599   }
600   for (auto *E : C->rhs_exprs()) {
601     if (E)
602       Profiler->VisitStmt(E);
603   }
604   for (auto *E : C->reduction_ops()) {
605     if (E)
606       Profiler->VisitStmt(E);
607   }
608 }
609 void OMPClauseProfiler::VisitOMPTaskReductionClause(
610     const OMPTaskReductionClause *C) {
611   Profiler->VisitNestedNameSpecifier(
612       C->getQualifierLoc().getNestedNameSpecifier());
613   Profiler->VisitName(C->getNameInfo().getName());
614   VisitOMPClauseList(C);
615   VistOMPClauseWithPostUpdate(C);
616   for (auto *E : C->privates()) {
617     if (E)
618       Profiler->VisitStmt(E);
619   }
620   for (auto *E : C->lhs_exprs()) {
621     if (E)
622       Profiler->VisitStmt(E);
623   }
624   for (auto *E : C->rhs_exprs()) {
625     if (E)
626       Profiler->VisitStmt(E);
627   }
628   for (auto *E : C->reduction_ops()) {
629     if (E)
630       Profiler->VisitStmt(E);
631   }
632 }
633 void OMPClauseProfiler::VisitOMPInReductionClause(
634     const OMPInReductionClause *C) {
635   Profiler->VisitNestedNameSpecifier(
636       C->getQualifierLoc().getNestedNameSpecifier());
637   Profiler->VisitName(C->getNameInfo().getName());
638   VisitOMPClauseList(C);
639   VistOMPClauseWithPostUpdate(C);
640   for (auto *E : C->privates()) {
641     if (E)
642       Profiler->VisitStmt(E);
643   }
644   for (auto *E : C->lhs_exprs()) {
645     if (E)
646       Profiler->VisitStmt(E);
647   }
648   for (auto *E : C->rhs_exprs()) {
649     if (E)
650       Profiler->VisitStmt(E);
651   }
652   for (auto *E : C->reduction_ops()) {
653     if (E)
654       Profiler->VisitStmt(E);
655   }
656   for (auto *E : C->taskgroup_descriptors()) {
657     if (E)
658       Profiler->VisitStmt(E);
659   }
660 }
661 void OMPClauseProfiler::VisitOMPLinearClause(const OMPLinearClause *C) {
662   VisitOMPClauseList(C);
663   VistOMPClauseWithPostUpdate(C);
664   for (auto *E : C->privates()) {
665     if (E)
666       Profiler->VisitStmt(E);
667   }
668   for (auto *E : C->inits()) {
669     if (E)
670       Profiler->VisitStmt(E);
671   }
672   for (auto *E : C->updates()) {
673     if (E)
674       Profiler->VisitStmt(E);
675   }
676   for (auto *E : C->finals()) {
677     if (E)
678       Profiler->VisitStmt(E);
679   }
680   if (C->getStep())
681     Profiler->VisitStmt(C->getStep());
682   if (C->getCalcStep())
683     Profiler->VisitStmt(C->getCalcStep());
684 }
685 void OMPClauseProfiler::VisitOMPAlignedClause(const OMPAlignedClause *C) {
686   VisitOMPClauseList(C);
687   if (C->getAlignment())
688     Profiler->VisitStmt(C->getAlignment());
689 }
690 void OMPClauseProfiler::VisitOMPCopyinClause(const OMPCopyinClause *C) {
691   VisitOMPClauseList(C);
692   for (auto *E : C->source_exprs()) {
693     if (E)
694       Profiler->VisitStmt(E);
695   }
696   for (auto *E : C->destination_exprs()) {
697     if (E)
698       Profiler->VisitStmt(E);
699   }
700   for (auto *E : C->assignment_ops()) {
701     if (E)
702       Profiler->VisitStmt(E);
703   }
704 }
705 void
706 OMPClauseProfiler::VisitOMPCopyprivateClause(const OMPCopyprivateClause *C) {
707   VisitOMPClauseList(C);
708   for (auto *E : C->source_exprs()) {
709     if (E)
710       Profiler->VisitStmt(E);
711   }
712   for (auto *E : C->destination_exprs()) {
713     if (E)
714       Profiler->VisitStmt(E);
715   }
716   for (auto *E : C->assignment_ops()) {
717     if (E)
718       Profiler->VisitStmt(E);
719   }
720 }
721 void OMPClauseProfiler::VisitOMPFlushClause(const OMPFlushClause *C) {
722   VisitOMPClauseList(C);
723 }
724 void OMPClauseProfiler::VisitOMPDepobjClause(const OMPDepobjClause *C) {
725   if (const Expr *Depobj = C->getDepobj())
726     Profiler->VisitStmt(Depobj);
727 }
728 void OMPClauseProfiler::VisitOMPDependClause(const OMPDependClause *C) {
729   VisitOMPClauseList(C);
730 }
731 void OMPClauseProfiler::VisitOMPDeviceClause(const OMPDeviceClause *C) {
732   if (C->getDevice())
733     Profiler->VisitStmt(C->getDevice());
734 }
735 void OMPClauseProfiler::VisitOMPMapClause(const OMPMapClause *C) {
736   VisitOMPClauseList(C);
737 }
738 void OMPClauseProfiler::VisitOMPAllocateClause(const OMPAllocateClause *C) {
739   if (Expr *Allocator = C->getAllocator())
740     Profiler->VisitStmt(Allocator);
741   VisitOMPClauseList(C);
742 }
743 void OMPClauseProfiler::VisitOMPNumTeamsClause(const OMPNumTeamsClause *C) {
744   VistOMPClauseWithPreInit(C);
745   if (C->getNumTeams())
746     Profiler->VisitStmt(C->getNumTeams());
747 }
748 void OMPClauseProfiler::VisitOMPThreadLimitClause(
749     const OMPThreadLimitClause *C) {
750   VistOMPClauseWithPreInit(C);
751   if (C->getThreadLimit())
752     Profiler->VisitStmt(C->getThreadLimit());
753 }
754 void OMPClauseProfiler::VisitOMPPriorityClause(const OMPPriorityClause *C) {
755   VistOMPClauseWithPreInit(C);
756   if (C->getPriority())
757     Profiler->VisitStmt(C->getPriority());
758 }
759 void OMPClauseProfiler::VisitOMPGrainsizeClause(const OMPGrainsizeClause *C) {
760   VistOMPClauseWithPreInit(C);
761   if (C->getGrainsize())
762     Profiler->VisitStmt(C->getGrainsize());
763 }
764 void OMPClauseProfiler::VisitOMPNumTasksClause(const OMPNumTasksClause *C) {
765   VistOMPClauseWithPreInit(C);
766   if (C->getNumTasks())
767     Profiler->VisitStmt(C->getNumTasks());
768 }
769 void OMPClauseProfiler::VisitOMPHintClause(const OMPHintClause *C) {
770   if (C->getHint())
771     Profiler->VisitStmt(C->getHint());
772 }
773 void OMPClauseProfiler::VisitOMPToClause(const OMPToClause *C) {
774   VisitOMPClauseList(C);
775 }
776 void OMPClauseProfiler::VisitOMPFromClause(const OMPFromClause *C) {
777   VisitOMPClauseList(C);
778 }
779 void OMPClauseProfiler::VisitOMPUseDevicePtrClause(
780     const OMPUseDevicePtrClause *C) {
781   VisitOMPClauseList(C);
782 }
783 void OMPClauseProfiler::VisitOMPIsDevicePtrClause(
784     const OMPIsDevicePtrClause *C) {
785   VisitOMPClauseList(C);
786 }
787 void OMPClauseProfiler::VisitOMPNontemporalClause(
788     const OMPNontemporalClause *C) {
789   VisitOMPClauseList(C);
790   for (auto *E : C->private_refs())
791     Profiler->VisitStmt(E);
792 }
793 void OMPClauseProfiler::VisitOMPOrderClause(const OMPOrderClause *C) {}
794 } // namespace
795 
796 void
797 StmtProfiler::VisitOMPExecutableDirective(const OMPExecutableDirective *S) {
798   VisitStmt(S);
799   OMPClauseProfiler P(this);
800   ArrayRef<OMPClause *> Clauses = S->clauses();
801   for (ArrayRef<OMPClause *>::iterator I = Clauses.begin(), E = Clauses.end();
802        I != E; ++I)
803     if (*I)
804       P.Visit(*I);
805 }
806 
807 void StmtProfiler::VisitOMPLoopDirective(const OMPLoopDirective *S) {
808   VisitOMPExecutableDirective(S);
809 }
810 
811 void StmtProfiler::VisitOMPParallelDirective(const OMPParallelDirective *S) {
812   VisitOMPExecutableDirective(S);
813 }
814 
815 void StmtProfiler::VisitOMPSimdDirective(const OMPSimdDirective *S) {
816   VisitOMPLoopDirective(S);
817 }
818 
819 void StmtProfiler::VisitOMPForDirective(const OMPForDirective *S) {
820   VisitOMPLoopDirective(S);
821 }
822 
823 void StmtProfiler::VisitOMPForSimdDirective(const OMPForSimdDirective *S) {
824   VisitOMPLoopDirective(S);
825 }
826 
827 void StmtProfiler::VisitOMPSectionsDirective(const OMPSectionsDirective *S) {
828   VisitOMPExecutableDirective(S);
829 }
830 
831 void StmtProfiler::VisitOMPSectionDirective(const OMPSectionDirective *S) {
832   VisitOMPExecutableDirective(S);
833 }
834 
835 void StmtProfiler::VisitOMPSingleDirective(const OMPSingleDirective *S) {
836   VisitOMPExecutableDirective(S);
837 }
838 
839 void StmtProfiler::VisitOMPMasterDirective(const OMPMasterDirective *S) {
840   VisitOMPExecutableDirective(S);
841 }
842 
843 void StmtProfiler::VisitOMPCriticalDirective(const OMPCriticalDirective *S) {
844   VisitOMPExecutableDirective(S);
845   VisitName(S->getDirectiveName().getName());
846 }
847 
848 void
849 StmtProfiler::VisitOMPParallelForDirective(const OMPParallelForDirective *S) {
850   VisitOMPLoopDirective(S);
851 }
852 
853 void StmtProfiler::VisitOMPParallelForSimdDirective(
854     const OMPParallelForSimdDirective *S) {
855   VisitOMPLoopDirective(S);
856 }
857 
858 void StmtProfiler::VisitOMPParallelMasterDirective(
859     const OMPParallelMasterDirective *S) {
860   VisitOMPExecutableDirective(S);
861 }
862 
863 void StmtProfiler::VisitOMPParallelSectionsDirective(
864     const OMPParallelSectionsDirective *S) {
865   VisitOMPExecutableDirective(S);
866 }
867 
868 void StmtProfiler::VisitOMPTaskDirective(const OMPTaskDirective *S) {
869   VisitOMPExecutableDirective(S);
870 }
871 
872 void StmtProfiler::VisitOMPTaskyieldDirective(const OMPTaskyieldDirective *S) {
873   VisitOMPExecutableDirective(S);
874 }
875 
876 void StmtProfiler::VisitOMPBarrierDirective(const OMPBarrierDirective *S) {
877   VisitOMPExecutableDirective(S);
878 }
879 
880 void StmtProfiler::VisitOMPTaskwaitDirective(const OMPTaskwaitDirective *S) {
881   VisitOMPExecutableDirective(S);
882 }
883 
884 void StmtProfiler::VisitOMPTaskgroupDirective(const OMPTaskgroupDirective *S) {
885   VisitOMPExecutableDirective(S);
886   if (const Expr *E = S->getReductionRef())
887     VisitStmt(E);
888 }
889 
890 void StmtProfiler::VisitOMPFlushDirective(const OMPFlushDirective *S) {
891   VisitOMPExecutableDirective(S);
892 }
893 
894 void StmtProfiler::VisitOMPDepobjDirective(const OMPDepobjDirective *S) {
895   VisitOMPExecutableDirective(S);
896 }
897 
898 void StmtProfiler::VisitOMPOrderedDirective(const OMPOrderedDirective *S) {
899   VisitOMPExecutableDirective(S);
900 }
901 
902 void StmtProfiler::VisitOMPAtomicDirective(const OMPAtomicDirective *S) {
903   VisitOMPExecutableDirective(S);
904 }
905 
906 void StmtProfiler::VisitOMPTargetDirective(const OMPTargetDirective *S) {
907   VisitOMPExecutableDirective(S);
908 }
909 
910 void StmtProfiler::VisitOMPTargetDataDirective(const OMPTargetDataDirective *S) {
911   VisitOMPExecutableDirective(S);
912 }
913 
914 void StmtProfiler::VisitOMPTargetEnterDataDirective(
915     const OMPTargetEnterDataDirective *S) {
916   VisitOMPExecutableDirective(S);
917 }
918 
919 void StmtProfiler::VisitOMPTargetExitDataDirective(
920     const OMPTargetExitDataDirective *S) {
921   VisitOMPExecutableDirective(S);
922 }
923 
924 void StmtProfiler::VisitOMPTargetParallelDirective(
925     const OMPTargetParallelDirective *S) {
926   VisitOMPExecutableDirective(S);
927 }
928 
929 void StmtProfiler::VisitOMPTargetParallelForDirective(
930     const OMPTargetParallelForDirective *S) {
931   VisitOMPExecutableDirective(S);
932 }
933 
934 void StmtProfiler::VisitOMPTeamsDirective(const OMPTeamsDirective *S) {
935   VisitOMPExecutableDirective(S);
936 }
937 
938 void StmtProfiler::VisitOMPCancellationPointDirective(
939     const OMPCancellationPointDirective *S) {
940   VisitOMPExecutableDirective(S);
941 }
942 
943 void StmtProfiler::VisitOMPCancelDirective(const OMPCancelDirective *S) {
944   VisitOMPExecutableDirective(S);
945 }
946 
947 void StmtProfiler::VisitOMPTaskLoopDirective(const OMPTaskLoopDirective *S) {
948   VisitOMPLoopDirective(S);
949 }
950 
951 void StmtProfiler::VisitOMPTaskLoopSimdDirective(
952     const OMPTaskLoopSimdDirective *S) {
953   VisitOMPLoopDirective(S);
954 }
955 
956 void StmtProfiler::VisitOMPMasterTaskLoopDirective(
957     const OMPMasterTaskLoopDirective *S) {
958   VisitOMPLoopDirective(S);
959 }
960 
961 void StmtProfiler::VisitOMPMasterTaskLoopSimdDirective(
962     const OMPMasterTaskLoopSimdDirective *S) {
963   VisitOMPLoopDirective(S);
964 }
965 
966 void StmtProfiler::VisitOMPParallelMasterTaskLoopDirective(
967     const OMPParallelMasterTaskLoopDirective *S) {
968   VisitOMPLoopDirective(S);
969 }
970 
971 void StmtProfiler::VisitOMPParallelMasterTaskLoopSimdDirective(
972     const OMPParallelMasterTaskLoopSimdDirective *S) {
973   VisitOMPLoopDirective(S);
974 }
975 
976 void StmtProfiler::VisitOMPDistributeDirective(
977     const OMPDistributeDirective *S) {
978   VisitOMPLoopDirective(S);
979 }
980 
981 void OMPClauseProfiler::VisitOMPDistScheduleClause(
982     const OMPDistScheduleClause *C) {
983   VistOMPClauseWithPreInit(C);
984   if (auto *S = C->getChunkSize())
985     Profiler->VisitStmt(S);
986 }
987 
988 void OMPClauseProfiler::VisitOMPDefaultmapClause(const OMPDefaultmapClause *) {}
989 
990 void StmtProfiler::VisitOMPTargetUpdateDirective(
991     const OMPTargetUpdateDirective *S) {
992   VisitOMPExecutableDirective(S);
993 }
994 
995 void StmtProfiler::VisitOMPDistributeParallelForDirective(
996     const OMPDistributeParallelForDirective *S) {
997   VisitOMPLoopDirective(S);
998 }
999 
1000 void StmtProfiler::VisitOMPDistributeParallelForSimdDirective(
1001     const OMPDistributeParallelForSimdDirective *S) {
1002   VisitOMPLoopDirective(S);
1003 }
1004 
1005 void StmtProfiler::VisitOMPDistributeSimdDirective(
1006     const OMPDistributeSimdDirective *S) {
1007   VisitOMPLoopDirective(S);
1008 }
1009 
1010 void StmtProfiler::VisitOMPTargetParallelForSimdDirective(
1011     const OMPTargetParallelForSimdDirective *S) {
1012   VisitOMPLoopDirective(S);
1013 }
1014 
1015 void StmtProfiler::VisitOMPTargetSimdDirective(
1016     const OMPTargetSimdDirective *S) {
1017   VisitOMPLoopDirective(S);
1018 }
1019 
1020 void StmtProfiler::VisitOMPTeamsDistributeDirective(
1021     const OMPTeamsDistributeDirective *S) {
1022   VisitOMPLoopDirective(S);
1023 }
1024 
1025 void StmtProfiler::VisitOMPTeamsDistributeSimdDirective(
1026     const OMPTeamsDistributeSimdDirective *S) {
1027   VisitOMPLoopDirective(S);
1028 }
1029 
1030 void StmtProfiler::VisitOMPTeamsDistributeParallelForSimdDirective(
1031     const OMPTeamsDistributeParallelForSimdDirective *S) {
1032   VisitOMPLoopDirective(S);
1033 }
1034 
1035 void StmtProfiler::VisitOMPTeamsDistributeParallelForDirective(
1036     const OMPTeamsDistributeParallelForDirective *S) {
1037   VisitOMPLoopDirective(S);
1038 }
1039 
1040 void StmtProfiler::VisitOMPTargetTeamsDirective(
1041     const OMPTargetTeamsDirective *S) {
1042   VisitOMPExecutableDirective(S);
1043 }
1044 
1045 void StmtProfiler::VisitOMPTargetTeamsDistributeDirective(
1046     const OMPTargetTeamsDistributeDirective *S) {
1047   VisitOMPLoopDirective(S);
1048 }
1049 
1050 void StmtProfiler::VisitOMPTargetTeamsDistributeParallelForDirective(
1051     const OMPTargetTeamsDistributeParallelForDirective *S) {
1052   VisitOMPLoopDirective(S);
1053 }
1054 
1055 void StmtProfiler::VisitOMPTargetTeamsDistributeParallelForSimdDirective(
1056     const OMPTargetTeamsDistributeParallelForSimdDirective *S) {
1057   VisitOMPLoopDirective(S);
1058 }
1059 
1060 void StmtProfiler::VisitOMPTargetTeamsDistributeSimdDirective(
1061     const OMPTargetTeamsDistributeSimdDirective *S) {
1062   VisitOMPLoopDirective(S);
1063 }
1064 
1065 void StmtProfiler::VisitExpr(const Expr *S) {
1066   VisitStmt(S);
1067 }
1068 
1069 void StmtProfiler::VisitConstantExpr(const ConstantExpr *S) {
1070   VisitExpr(S);
1071 }
1072 
1073 void StmtProfiler::VisitDeclRefExpr(const DeclRefExpr *S) {
1074   VisitExpr(S);
1075   if (!Canonical)
1076     VisitNestedNameSpecifier(S->getQualifier());
1077   VisitDecl(S->getDecl());
1078   if (!Canonical) {
1079     ID.AddBoolean(S->hasExplicitTemplateArgs());
1080     if (S->hasExplicitTemplateArgs())
1081       VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1082   }
1083 }
1084 
1085 void StmtProfiler::VisitPredefinedExpr(const PredefinedExpr *S) {
1086   VisitExpr(S);
1087   ID.AddInteger(S->getIdentKind());
1088 }
1089 
1090 void StmtProfiler::VisitIntegerLiteral(const IntegerLiteral *S) {
1091   VisitExpr(S);
1092   S->getValue().Profile(ID);
1093   ID.AddInteger(S->getType()->castAs<BuiltinType>()->getKind());
1094 }
1095 
1096 void StmtProfiler::VisitFixedPointLiteral(const FixedPointLiteral *S) {
1097   VisitExpr(S);
1098   S->getValue().Profile(ID);
1099   ID.AddInteger(S->getType()->castAs<BuiltinType>()->getKind());
1100 }
1101 
1102 void StmtProfiler::VisitCharacterLiteral(const CharacterLiteral *S) {
1103   VisitExpr(S);
1104   ID.AddInteger(S->getKind());
1105   ID.AddInteger(S->getValue());
1106 }
1107 
1108 void StmtProfiler::VisitFloatingLiteral(const FloatingLiteral *S) {
1109   VisitExpr(S);
1110   S->getValue().Profile(ID);
1111   ID.AddBoolean(S->isExact());
1112   ID.AddInteger(S->getType()->castAs<BuiltinType>()->getKind());
1113 }
1114 
1115 void StmtProfiler::VisitImaginaryLiteral(const ImaginaryLiteral *S) {
1116   VisitExpr(S);
1117 }
1118 
1119 void StmtProfiler::VisitStringLiteral(const StringLiteral *S) {
1120   VisitExpr(S);
1121   ID.AddString(S->getBytes());
1122   ID.AddInteger(S->getKind());
1123 }
1124 
1125 void StmtProfiler::VisitParenExpr(const ParenExpr *S) {
1126   VisitExpr(S);
1127 }
1128 
1129 void StmtProfiler::VisitParenListExpr(const ParenListExpr *S) {
1130   VisitExpr(S);
1131 }
1132 
1133 void StmtProfiler::VisitUnaryOperator(const UnaryOperator *S) {
1134   VisitExpr(S);
1135   ID.AddInteger(S->getOpcode());
1136 }
1137 
1138 void StmtProfiler::VisitOffsetOfExpr(const OffsetOfExpr *S) {
1139   VisitType(S->getTypeSourceInfo()->getType());
1140   unsigned n = S->getNumComponents();
1141   for (unsigned i = 0; i < n; ++i) {
1142     const OffsetOfNode &ON = S->getComponent(i);
1143     ID.AddInteger(ON.getKind());
1144     switch (ON.getKind()) {
1145     case OffsetOfNode::Array:
1146       // Expressions handled below.
1147       break;
1148 
1149     case OffsetOfNode::Field:
1150       VisitDecl(ON.getField());
1151       break;
1152 
1153     case OffsetOfNode::Identifier:
1154       VisitIdentifierInfo(ON.getFieldName());
1155       break;
1156 
1157     case OffsetOfNode::Base:
1158       // These nodes are implicit, and therefore don't need profiling.
1159       break;
1160     }
1161   }
1162 
1163   VisitExpr(S);
1164 }
1165 
1166 void
1167 StmtProfiler::VisitUnaryExprOrTypeTraitExpr(const UnaryExprOrTypeTraitExpr *S) {
1168   VisitExpr(S);
1169   ID.AddInteger(S->getKind());
1170   if (S->isArgumentType())
1171     VisitType(S->getArgumentType());
1172 }
1173 
1174 void StmtProfiler::VisitArraySubscriptExpr(const ArraySubscriptExpr *S) {
1175   VisitExpr(S);
1176 }
1177 
1178 void StmtProfiler::VisitOMPArraySectionExpr(const OMPArraySectionExpr *S) {
1179   VisitExpr(S);
1180 }
1181 
1182 void StmtProfiler::VisitCallExpr(const CallExpr *S) {
1183   VisitExpr(S);
1184 }
1185 
1186 void StmtProfiler::VisitMemberExpr(const MemberExpr *S) {
1187   VisitExpr(S);
1188   VisitDecl(S->getMemberDecl());
1189   if (!Canonical)
1190     VisitNestedNameSpecifier(S->getQualifier());
1191   ID.AddBoolean(S->isArrow());
1192 }
1193 
1194 void StmtProfiler::VisitCompoundLiteralExpr(const CompoundLiteralExpr *S) {
1195   VisitExpr(S);
1196   ID.AddBoolean(S->isFileScope());
1197 }
1198 
1199 void StmtProfiler::VisitCastExpr(const CastExpr *S) {
1200   VisitExpr(S);
1201 }
1202 
1203 void StmtProfiler::VisitImplicitCastExpr(const ImplicitCastExpr *S) {
1204   VisitCastExpr(S);
1205   ID.AddInteger(S->getValueKind());
1206 }
1207 
1208 void StmtProfiler::VisitExplicitCastExpr(const ExplicitCastExpr *S) {
1209   VisitCastExpr(S);
1210   VisitType(S->getTypeAsWritten());
1211 }
1212 
1213 void StmtProfiler::VisitCStyleCastExpr(const CStyleCastExpr *S) {
1214   VisitExplicitCastExpr(S);
1215 }
1216 
1217 void StmtProfiler::VisitBinaryOperator(const BinaryOperator *S) {
1218   VisitExpr(S);
1219   ID.AddInteger(S->getOpcode());
1220 }
1221 
1222 void
1223 StmtProfiler::VisitCompoundAssignOperator(const CompoundAssignOperator *S) {
1224   VisitBinaryOperator(S);
1225 }
1226 
1227 void StmtProfiler::VisitConditionalOperator(const ConditionalOperator *S) {
1228   VisitExpr(S);
1229 }
1230 
1231 void StmtProfiler::VisitBinaryConditionalOperator(
1232     const BinaryConditionalOperator *S) {
1233   VisitExpr(S);
1234 }
1235 
1236 void StmtProfiler::VisitAddrLabelExpr(const AddrLabelExpr *S) {
1237   VisitExpr(S);
1238   VisitDecl(S->getLabel());
1239 }
1240 
1241 void StmtProfiler::VisitStmtExpr(const StmtExpr *S) {
1242   VisitExpr(S);
1243 }
1244 
1245 void StmtProfiler::VisitShuffleVectorExpr(const ShuffleVectorExpr *S) {
1246   VisitExpr(S);
1247 }
1248 
1249 void StmtProfiler::VisitConvertVectorExpr(const ConvertVectorExpr *S) {
1250   VisitExpr(S);
1251 }
1252 
1253 void StmtProfiler::VisitChooseExpr(const ChooseExpr *S) {
1254   VisitExpr(S);
1255 }
1256 
1257 void StmtProfiler::VisitGNUNullExpr(const GNUNullExpr *S) {
1258   VisitExpr(S);
1259 }
1260 
1261 void StmtProfiler::VisitVAArgExpr(const VAArgExpr *S) {
1262   VisitExpr(S);
1263 }
1264 
1265 void StmtProfiler::VisitInitListExpr(const InitListExpr *S) {
1266   if (S->getSyntacticForm()) {
1267     VisitInitListExpr(S->getSyntacticForm());
1268     return;
1269   }
1270 
1271   VisitExpr(S);
1272 }
1273 
1274 void StmtProfiler::VisitDesignatedInitExpr(const DesignatedInitExpr *S) {
1275   VisitExpr(S);
1276   ID.AddBoolean(S->usesGNUSyntax());
1277   for (const DesignatedInitExpr::Designator &D : S->designators()) {
1278     if (D.isFieldDesignator()) {
1279       ID.AddInteger(0);
1280       VisitName(D.getFieldName());
1281       continue;
1282     }
1283 
1284     if (D.isArrayDesignator()) {
1285       ID.AddInteger(1);
1286     } else {
1287       assert(D.isArrayRangeDesignator());
1288       ID.AddInteger(2);
1289     }
1290     ID.AddInteger(D.getFirstExprIndex());
1291   }
1292 }
1293 
1294 // Seems that if VisitInitListExpr() only works on the syntactic form of an
1295 // InitListExpr, then a DesignatedInitUpdateExpr is not encountered.
1296 void StmtProfiler::VisitDesignatedInitUpdateExpr(
1297     const DesignatedInitUpdateExpr *S) {
1298   llvm_unreachable("Unexpected DesignatedInitUpdateExpr in syntactic form of "
1299                    "initializer");
1300 }
1301 
1302 void StmtProfiler::VisitArrayInitLoopExpr(const ArrayInitLoopExpr *S) {
1303   VisitExpr(S);
1304 }
1305 
1306 void StmtProfiler::VisitArrayInitIndexExpr(const ArrayInitIndexExpr *S) {
1307   VisitExpr(S);
1308 }
1309 
1310 void StmtProfiler::VisitNoInitExpr(const NoInitExpr *S) {
1311   llvm_unreachable("Unexpected NoInitExpr in syntactic form of initializer");
1312 }
1313 
1314 void StmtProfiler::VisitImplicitValueInitExpr(const ImplicitValueInitExpr *S) {
1315   VisitExpr(S);
1316 }
1317 
1318 void StmtProfiler::VisitExtVectorElementExpr(const ExtVectorElementExpr *S) {
1319   VisitExpr(S);
1320   VisitName(&S->getAccessor());
1321 }
1322 
1323 void StmtProfiler::VisitBlockExpr(const BlockExpr *S) {
1324   VisitExpr(S);
1325   VisitDecl(S->getBlockDecl());
1326 }
1327 
1328 void StmtProfiler::VisitGenericSelectionExpr(const GenericSelectionExpr *S) {
1329   VisitExpr(S);
1330   for (const GenericSelectionExpr::ConstAssociation Assoc :
1331        S->associations()) {
1332     QualType T = Assoc.getType();
1333     if (T.isNull())
1334       ID.AddPointer(nullptr);
1335     else
1336       VisitType(T);
1337     VisitExpr(Assoc.getAssociationExpr());
1338   }
1339 }
1340 
1341 void StmtProfiler::VisitPseudoObjectExpr(const PseudoObjectExpr *S) {
1342   VisitExpr(S);
1343   for (PseudoObjectExpr::const_semantics_iterator
1344          i = S->semantics_begin(), e = S->semantics_end(); i != e; ++i)
1345     // Normally, we would not profile the source expressions of OVEs.
1346     if (const OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(*i))
1347       Visit(OVE->getSourceExpr());
1348 }
1349 
1350 void StmtProfiler::VisitAtomicExpr(const AtomicExpr *S) {
1351   VisitExpr(S);
1352   ID.AddInteger(S->getOp());
1353 }
1354 
1355 void StmtProfiler::VisitConceptSpecializationExpr(
1356                                            const ConceptSpecializationExpr *S) {
1357   VisitExpr(S);
1358   VisitDecl(S->getNamedConcept());
1359   for (const TemplateArgument &Arg : S->getTemplateArguments())
1360     VisitTemplateArgument(Arg);
1361 }
1362 
1363 void StmtProfiler::VisitRequiresExpr(const RequiresExpr *S) {
1364   VisitExpr(S);
1365   ID.AddInteger(S->getLocalParameters().size());
1366   for (ParmVarDecl *LocalParam : S->getLocalParameters())
1367     VisitDecl(LocalParam);
1368   ID.AddInteger(S->getRequirements().size());
1369   for (concepts::Requirement *Req : S->getRequirements()) {
1370     if (auto *TypeReq = dyn_cast<concepts::TypeRequirement>(Req)) {
1371       ID.AddInteger(concepts::Requirement::RK_Type);
1372       ID.AddBoolean(TypeReq->isSubstitutionFailure());
1373       if (!TypeReq->isSubstitutionFailure())
1374         VisitType(TypeReq->getType()->getType());
1375     } else if (auto *ExprReq = dyn_cast<concepts::ExprRequirement>(Req)) {
1376       ID.AddInteger(concepts::Requirement::RK_Compound);
1377       ID.AddBoolean(ExprReq->isExprSubstitutionFailure());
1378       if (!ExprReq->isExprSubstitutionFailure())
1379         Visit(ExprReq->getExpr());
1380       // C++2a [expr.prim.req.compound]p1 Example:
1381       //    [...] The compound-requirement in C1 requires that x++ is a valid
1382       //    expression. It is equivalent to the simple-requirement x++; [...]
1383       // We therefore do not profile isSimple() here.
1384       ID.AddBoolean(ExprReq->getNoexceptLoc().isValid());
1385       const concepts::ExprRequirement::ReturnTypeRequirement &RetReq =
1386           ExprReq->getReturnTypeRequirement();
1387       if (RetReq.isEmpty()) {
1388         ID.AddInteger(0);
1389       } else if (RetReq.isTypeConstraint()) {
1390         ID.AddInteger(1);
1391         Visit(RetReq.getTypeConstraint()->getImmediatelyDeclaredConstraint());
1392       } else {
1393         assert(RetReq.isSubstitutionFailure());
1394         ID.AddInteger(2);
1395       }
1396     } else {
1397       ID.AddInteger(concepts::Requirement::RK_Nested);
1398       auto *NestedReq = cast<concepts::NestedRequirement>(Req);
1399       ID.AddBoolean(NestedReq->isSubstitutionFailure());
1400       if (!NestedReq->isSubstitutionFailure())
1401         Visit(NestedReq->getConstraintExpr());
1402     }
1403   }
1404 }
1405 
1406 static Stmt::StmtClass DecodeOperatorCall(const CXXOperatorCallExpr *S,
1407                                           UnaryOperatorKind &UnaryOp,
1408                                           BinaryOperatorKind &BinaryOp) {
1409   switch (S->getOperator()) {
1410   case OO_None:
1411   case OO_New:
1412   case OO_Delete:
1413   case OO_Array_New:
1414   case OO_Array_Delete:
1415   case OO_Arrow:
1416   case OO_Call:
1417   case OO_Conditional:
1418   case NUM_OVERLOADED_OPERATORS:
1419     llvm_unreachable("Invalid operator call kind");
1420 
1421   case OO_Plus:
1422     if (S->getNumArgs() == 1) {
1423       UnaryOp = UO_Plus;
1424       return Stmt::UnaryOperatorClass;
1425     }
1426 
1427     BinaryOp = BO_Add;
1428     return Stmt::BinaryOperatorClass;
1429 
1430   case OO_Minus:
1431     if (S->getNumArgs() == 1) {
1432       UnaryOp = UO_Minus;
1433       return Stmt::UnaryOperatorClass;
1434     }
1435 
1436     BinaryOp = BO_Sub;
1437     return Stmt::BinaryOperatorClass;
1438 
1439   case OO_Star:
1440     if (S->getNumArgs() == 1) {
1441       UnaryOp = UO_Deref;
1442       return Stmt::UnaryOperatorClass;
1443     }
1444 
1445     BinaryOp = BO_Mul;
1446     return Stmt::BinaryOperatorClass;
1447 
1448   case OO_Slash:
1449     BinaryOp = BO_Div;
1450     return Stmt::BinaryOperatorClass;
1451 
1452   case OO_Percent:
1453     BinaryOp = BO_Rem;
1454     return Stmt::BinaryOperatorClass;
1455 
1456   case OO_Caret:
1457     BinaryOp = BO_Xor;
1458     return Stmt::BinaryOperatorClass;
1459 
1460   case OO_Amp:
1461     if (S->getNumArgs() == 1) {
1462       UnaryOp = UO_AddrOf;
1463       return Stmt::UnaryOperatorClass;
1464     }
1465 
1466     BinaryOp = BO_And;
1467     return Stmt::BinaryOperatorClass;
1468 
1469   case OO_Pipe:
1470     BinaryOp = BO_Or;
1471     return Stmt::BinaryOperatorClass;
1472 
1473   case OO_Tilde:
1474     UnaryOp = UO_Not;
1475     return Stmt::UnaryOperatorClass;
1476 
1477   case OO_Exclaim:
1478     UnaryOp = UO_LNot;
1479     return Stmt::UnaryOperatorClass;
1480 
1481   case OO_Equal:
1482     BinaryOp = BO_Assign;
1483     return Stmt::BinaryOperatorClass;
1484 
1485   case OO_Less:
1486     BinaryOp = BO_LT;
1487     return Stmt::BinaryOperatorClass;
1488 
1489   case OO_Greater:
1490     BinaryOp = BO_GT;
1491     return Stmt::BinaryOperatorClass;
1492 
1493   case OO_PlusEqual:
1494     BinaryOp = BO_AddAssign;
1495     return Stmt::CompoundAssignOperatorClass;
1496 
1497   case OO_MinusEqual:
1498     BinaryOp = BO_SubAssign;
1499     return Stmt::CompoundAssignOperatorClass;
1500 
1501   case OO_StarEqual:
1502     BinaryOp = BO_MulAssign;
1503     return Stmt::CompoundAssignOperatorClass;
1504 
1505   case OO_SlashEqual:
1506     BinaryOp = BO_DivAssign;
1507     return Stmt::CompoundAssignOperatorClass;
1508 
1509   case OO_PercentEqual:
1510     BinaryOp = BO_RemAssign;
1511     return Stmt::CompoundAssignOperatorClass;
1512 
1513   case OO_CaretEqual:
1514     BinaryOp = BO_XorAssign;
1515     return Stmt::CompoundAssignOperatorClass;
1516 
1517   case OO_AmpEqual:
1518     BinaryOp = BO_AndAssign;
1519     return Stmt::CompoundAssignOperatorClass;
1520 
1521   case OO_PipeEqual:
1522     BinaryOp = BO_OrAssign;
1523     return Stmt::CompoundAssignOperatorClass;
1524 
1525   case OO_LessLess:
1526     BinaryOp = BO_Shl;
1527     return Stmt::BinaryOperatorClass;
1528 
1529   case OO_GreaterGreater:
1530     BinaryOp = BO_Shr;
1531     return Stmt::BinaryOperatorClass;
1532 
1533   case OO_LessLessEqual:
1534     BinaryOp = BO_ShlAssign;
1535     return Stmt::CompoundAssignOperatorClass;
1536 
1537   case OO_GreaterGreaterEqual:
1538     BinaryOp = BO_ShrAssign;
1539     return Stmt::CompoundAssignOperatorClass;
1540 
1541   case OO_EqualEqual:
1542     BinaryOp = BO_EQ;
1543     return Stmt::BinaryOperatorClass;
1544 
1545   case OO_ExclaimEqual:
1546     BinaryOp = BO_NE;
1547     return Stmt::BinaryOperatorClass;
1548 
1549   case OO_LessEqual:
1550     BinaryOp = BO_LE;
1551     return Stmt::BinaryOperatorClass;
1552 
1553   case OO_GreaterEqual:
1554     BinaryOp = BO_GE;
1555     return Stmt::BinaryOperatorClass;
1556 
1557   case OO_Spaceship:
1558     BinaryOp = BO_Cmp;
1559     return Stmt::BinaryOperatorClass;
1560 
1561   case OO_AmpAmp:
1562     BinaryOp = BO_LAnd;
1563     return Stmt::BinaryOperatorClass;
1564 
1565   case OO_PipePipe:
1566     BinaryOp = BO_LOr;
1567     return Stmt::BinaryOperatorClass;
1568 
1569   case OO_PlusPlus:
1570     UnaryOp = S->getNumArgs() == 1? UO_PreInc
1571                                   : UO_PostInc;
1572     return Stmt::UnaryOperatorClass;
1573 
1574   case OO_MinusMinus:
1575     UnaryOp = S->getNumArgs() == 1? UO_PreDec
1576                                   : UO_PostDec;
1577     return Stmt::UnaryOperatorClass;
1578 
1579   case OO_Comma:
1580     BinaryOp = BO_Comma;
1581     return Stmt::BinaryOperatorClass;
1582 
1583   case OO_ArrowStar:
1584     BinaryOp = BO_PtrMemI;
1585     return Stmt::BinaryOperatorClass;
1586 
1587   case OO_Subscript:
1588     return Stmt::ArraySubscriptExprClass;
1589 
1590   case OO_Coawait:
1591     UnaryOp = UO_Coawait;
1592     return Stmt::UnaryOperatorClass;
1593   }
1594 
1595   llvm_unreachable("Invalid overloaded operator expression");
1596 }
1597 
1598 #if defined(_MSC_VER) && !defined(__clang__)
1599 #if _MSC_VER == 1911
1600 // Work around https://developercommunity.visualstudio.com/content/problem/84002/clang-cl-when-built-with-vc-2017-crashes-cause-vc.html
1601 // MSVC 2017 update 3 miscompiles this function, and a clang built with it
1602 // will crash in stage 2 of a bootstrap build.
1603 #pragma optimize("", off)
1604 #endif
1605 #endif
1606 
1607 void StmtProfiler::VisitCXXOperatorCallExpr(const CXXOperatorCallExpr *S) {
1608   if (S->isTypeDependent()) {
1609     // Type-dependent operator calls are profiled like their underlying
1610     // syntactic operator.
1611     //
1612     // An operator call to operator-> is always implicit, so just skip it. The
1613     // enclosing MemberExpr will profile the actual member access.
1614     if (S->getOperator() == OO_Arrow)
1615       return Visit(S->getArg(0));
1616 
1617     UnaryOperatorKind UnaryOp = UO_Extension;
1618     BinaryOperatorKind BinaryOp = BO_Comma;
1619     Stmt::StmtClass SC = DecodeOperatorCall(S, UnaryOp, BinaryOp);
1620 
1621     ID.AddInteger(SC);
1622     for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
1623       Visit(S->getArg(I));
1624     if (SC == Stmt::UnaryOperatorClass)
1625       ID.AddInteger(UnaryOp);
1626     else if (SC == Stmt::BinaryOperatorClass ||
1627              SC == Stmt::CompoundAssignOperatorClass)
1628       ID.AddInteger(BinaryOp);
1629     else
1630       assert(SC == Stmt::ArraySubscriptExprClass);
1631 
1632     return;
1633   }
1634 
1635   VisitCallExpr(S);
1636   ID.AddInteger(S->getOperator());
1637 }
1638 
1639 void StmtProfiler::VisitCXXRewrittenBinaryOperator(
1640     const CXXRewrittenBinaryOperator *S) {
1641   // If a rewritten operator were ever to be type-dependent, we should profile
1642   // it following its syntactic operator.
1643   assert(!S->isTypeDependent() &&
1644          "resolved rewritten operator should never be type-dependent");
1645   ID.AddBoolean(S->isReversed());
1646   VisitExpr(S->getSemanticForm());
1647 }
1648 
1649 #if defined(_MSC_VER) && !defined(__clang__)
1650 #if _MSC_VER == 1911
1651 #pragma optimize("", on)
1652 #endif
1653 #endif
1654 
1655 void StmtProfiler::VisitCXXMemberCallExpr(const CXXMemberCallExpr *S) {
1656   VisitCallExpr(S);
1657 }
1658 
1659 void StmtProfiler::VisitCUDAKernelCallExpr(const CUDAKernelCallExpr *S) {
1660   VisitCallExpr(S);
1661 }
1662 
1663 void StmtProfiler::VisitAsTypeExpr(const AsTypeExpr *S) {
1664   VisitExpr(S);
1665 }
1666 
1667 void StmtProfiler::VisitCXXNamedCastExpr(const CXXNamedCastExpr *S) {
1668   VisitExplicitCastExpr(S);
1669 }
1670 
1671 void StmtProfiler::VisitCXXStaticCastExpr(const CXXStaticCastExpr *S) {
1672   VisitCXXNamedCastExpr(S);
1673 }
1674 
1675 void StmtProfiler::VisitCXXDynamicCastExpr(const CXXDynamicCastExpr *S) {
1676   VisitCXXNamedCastExpr(S);
1677 }
1678 
1679 void
1680 StmtProfiler::VisitCXXReinterpretCastExpr(const CXXReinterpretCastExpr *S) {
1681   VisitCXXNamedCastExpr(S);
1682 }
1683 
1684 void StmtProfiler::VisitCXXConstCastExpr(const CXXConstCastExpr *S) {
1685   VisitCXXNamedCastExpr(S);
1686 }
1687 
1688 void StmtProfiler::VisitBuiltinBitCastExpr(const BuiltinBitCastExpr *S) {
1689   VisitExpr(S);
1690   VisitType(S->getTypeInfoAsWritten()->getType());
1691 }
1692 
1693 void StmtProfiler::VisitUserDefinedLiteral(const UserDefinedLiteral *S) {
1694   VisitCallExpr(S);
1695 }
1696 
1697 void StmtProfiler::VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *S) {
1698   VisitExpr(S);
1699   ID.AddBoolean(S->getValue());
1700 }
1701 
1702 void StmtProfiler::VisitCXXNullPtrLiteralExpr(const CXXNullPtrLiteralExpr *S) {
1703   VisitExpr(S);
1704 }
1705 
1706 void StmtProfiler::VisitCXXStdInitializerListExpr(
1707     const CXXStdInitializerListExpr *S) {
1708   VisitExpr(S);
1709 }
1710 
1711 void StmtProfiler::VisitCXXTypeidExpr(const CXXTypeidExpr *S) {
1712   VisitExpr(S);
1713   if (S->isTypeOperand())
1714     VisitType(S->getTypeOperandSourceInfo()->getType());
1715 }
1716 
1717 void StmtProfiler::VisitCXXUuidofExpr(const CXXUuidofExpr *S) {
1718   VisitExpr(S);
1719   if (S->isTypeOperand())
1720     VisitType(S->getTypeOperandSourceInfo()->getType());
1721 }
1722 
1723 void StmtProfiler::VisitMSPropertyRefExpr(const MSPropertyRefExpr *S) {
1724   VisitExpr(S);
1725   VisitDecl(S->getPropertyDecl());
1726 }
1727 
1728 void StmtProfiler::VisitMSPropertySubscriptExpr(
1729     const MSPropertySubscriptExpr *S) {
1730   VisitExpr(S);
1731 }
1732 
1733 void StmtProfiler::VisitCXXThisExpr(const CXXThisExpr *S) {
1734   VisitExpr(S);
1735   ID.AddBoolean(S->isImplicit());
1736 }
1737 
1738 void StmtProfiler::VisitCXXThrowExpr(const CXXThrowExpr *S) {
1739   VisitExpr(S);
1740 }
1741 
1742 void StmtProfiler::VisitCXXDefaultArgExpr(const CXXDefaultArgExpr *S) {
1743   VisitExpr(S);
1744   VisitDecl(S->getParam());
1745 }
1746 
1747 void StmtProfiler::VisitCXXDefaultInitExpr(const CXXDefaultInitExpr *S) {
1748   VisitExpr(S);
1749   VisitDecl(S->getField());
1750 }
1751 
1752 void StmtProfiler::VisitCXXBindTemporaryExpr(const CXXBindTemporaryExpr *S) {
1753   VisitExpr(S);
1754   VisitDecl(
1755          const_cast<CXXDestructorDecl *>(S->getTemporary()->getDestructor()));
1756 }
1757 
1758 void StmtProfiler::VisitCXXConstructExpr(const CXXConstructExpr *S) {
1759   VisitExpr(S);
1760   VisitDecl(S->getConstructor());
1761   ID.AddBoolean(S->isElidable());
1762 }
1763 
1764 void StmtProfiler::VisitCXXInheritedCtorInitExpr(
1765     const CXXInheritedCtorInitExpr *S) {
1766   VisitExpr(S);
1767   VisitDecl(S->getConstructor());
1768 }
1769 
1770 void StmtProfiler::VisitCXXFunctionalCastExpr(const CXXFunctionalCastExpr *S) {
1771   VisitExplicitCastExpr(S);
1772 }
1773 
1774 void
1775 StmtProfiler::VisitCXXTemporaryObjectExpr(const CXXTemporaryObjectExpr *S) {
1776   VisitCXXConstructExpr(S);
1777 }
1778 
1779 void
1780 StmtProfiler::VisitLambdaExpr(const LambdaExpr *S) {
1781   VisitExpr(S);
1782   for (LambdaExpr::capture_iterator C = S->explicit_capture_begin(),
1783                                  CEnd = S->explicit_capture_end();
1784        C != CEnd; ++C) {
1785     if (C->capturesVLAType())
1786       continue;
1787 
1788     ID.AddInteger(C->getCaptureKind());
1789     switch (C->getCaptureKind()) {
1790     case LCK_StarThis:
1791     case LCK_This:
1792       break;
1793     case LCK_ByRef:
1794     case LCK_ByCopy:
1795       VisitDecl(C->getCapturedVar());
1796       ID.AddBoolean(C->isPackExpansion());
1797       break;
1798     case LCK_VLAType:
1799       llvm_unreachable("VLA type in explicit captures.");
1800     }
1801   }
1802   // Note: If we actually needed to be able to match lambda
1803   // expressions, we would have to consider parameters and return type
1804   // here, among other things.
1805   VisitStmt(S->getBody());
1806 }
1807 
1808 void
1809 StmtProfiler::VisitCXXScalarValueInitExpr(const CXXScalarValueInitExpr *S) {
1810   VisitExpr(S);
1811 }
1812 
1813 void StmtProfiler::VisitCXXDeleteExpr(const CXXDeleteExpr *S) {
1814   VisitExpr(S);
1815   ID.AddBoolean(S->isGlobalDelete());
1816   ID.AddBoolean(S->isArrayForm());
1817   VisitDecl(S->getOperatorDelete());
1818 }
1819 
1820 void StmtProfiler::VisitCXXNewExpr(const CXXNewExpr *S) {
1821   VisitExpr(S);
1822   VisitType(S->getAllocatedType());
1823   VisitDecl(S->getOperatorNew());
1824   VisitDecl(S->getOperatorDelete());
1825   ID.AddBoolean(S->isArray());
1826   ID.AddInteger(S->getNumPlacementArgs());
1827   ID.AddBoolean(S->isGlobalNew());
1828   ID.AddBoolean(S->isParenTypeId());
1829   ID.AddInteger(S->getInitializationStyle());
1830 }
1831 
1832 void
1833 StmtProfiler::VisitCXXPseudoDestructorExpr(const CXXPseudoDestructorExpr *S) {
1834   VisitExpr(S);
1835   ID.AddBoolean(S->isArrow());
1836   VisitNestedNameSpecifier(S->getQualifier());
1837   ID.AddBoolean(S->getScopeTypeInfo() != nullptr);
1838   if (S->getScopeTypeInfo())
1839     VisitType(S->getScopeTypeInfo()->getType());
1840   ID.AddBoolean(S->getDestroyedTypeInfo() != nullptr);
1841   if (S->getDestroyedTypeInfo())
1842     VisitType(S->getDestroyedType());
1843   else
1844     VisitIdentifierInfo(S->getDestroyedTypeIdentifier());
1845 }
1846 
1847 void StmtProfiler::VisitOverloadExpr(const OverloadExpr *S) {
1848   VisitExpr(S);
1849   VisitNestedNameSpecifier(S->getQualifier());
1850   VisitName(S->getName(), /*TreatAsDecl*/ true);
1851   ID.AddBoolean(S->hasExplicitTemplateArgs());
1852   if (S->hasExplicitTemplateArgs())
1853     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1854 }
1855 
1856 void
1857 StmtProfiler::VisitUnresolvedLookupExpr(const UnresolvedLookupExpr *S) {
1858   VisitOverloadExpr(S);
1859 }
1860 
1861 void StmtProfiler::VisitTypeTraitExpr(const TypeTraitExpr *S) {
1862   VisitExpr(S);
1863   ID.AddInteger(S->getTrait());
1864   ID.AddInteger(S->getNumArgs());
1865   for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
1866     VisitType(S->getArg(I)->getType());
1867 }
1868 
1869 void StmtProfiler::VisitArrayTypeTraitExpr(const ArrayTypeTraitExpr *S) {
1870   VisitExpr(S);
1871   ID.AddInteger(S->getTrait());
1872   VisitType(S->getQueriedType());
1873 }
1874 
1875 void StmtProfiler::VisitExpressionTraitExpr(const ExpressionTraitExpr *S) {
1876   VisitExpr(S);
1877   ID.AddInteger(S->getTrait());
1878   VisitExpr(S->getQueriedExpression());
1879 }
1880 
1881 void StmtProfiler::VisitDependentScopeDeclRefExpr(
1882     const DependentScopeDeclRefExpr *S) {
1883   VisitExpr(S);
1884   VisitName(S->getDeclName());
1885   VisitNestedNameSpecifier(S->getQualifier());
1886   ID.AddBoolean(S->hasExplicitTemplateArgs());
1887   if (S->hasExplicitTemplateArgs())
1888     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1889 }
1890 
1891 void StmtProfiler::VisitExprWithCleanups(const ExprWithCleanups *S) {
1892   VisitExpr(S);
1893 }
1894 
1895 void StmtProfiler::VisitCXXUnresolvedConstructExpr(
1896     const CXXUnresolvedConstructExpr *S) {
1897   VisitExpr(S);
1898   VisitType(S->getTypeAsWritten());
1899   ID.AddInteger(S->isListInitialization());
1900 }
1901 
1902 void StmtProfiler::VisitCXXDependentScopeMemberExpr(
1903     const CXXDependentScopeMemberExpr *S) {
1904   ID.AddBoolean(S->isImplicitAccess());
1905   if (!S->isImplicitAccess()) {
1906     VisitExpr(S);
1907     ID.AddBoolean(S->isArrow());
1908   }
1909   VisitNestedNameSpecifier(S->getQualifier());
1910   VisitName(S->getMember());
1911   ID.AddBoolean(S->hasExplicitTemplateArgs());
1912   if (S->hasExplicitTemplateArgs())
1913     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1914 }
1915 
1916 void StmtProfiler::VisitUnresolvedMemberExpr(const UnresolvedMemberExpr *S) {
1917   ID.AddBoolean(S->isImplicitAccess());
1918   if (!S->isImplicitAccess()) {
1919     VisitExpr(S);
1920     ID.AddBoolean(S->isArrow());
1921   }
1922   VisitNestedNameSpecifier(S->getQualifier());
1923   VisitName(S->getMemberName());
1924   ID.AddBoolean(S->hasExplicitTemplateArgs());
1925   if (S->hasExplicitTemplateArgs())
1926     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1927 }
1928 
1929 void StmtProfiler::VisitCXXNoexceptExpr(const CXXNoexceptExpr *S) {
1930   VisitExpr(S);
1931 }
1932 
1933 void StmtProfiler::VisitPackExpansionExpr(const PackExpansionExpr *S) {
1934   VisitExpr(S);
1935 }
1936 
1937 void StmtProfiler::VisitSizeOfPackExpr(const SizeOfPackExpr *S) {
1938   VisitExpr(S);
1939   VisitDecl(S->getPack());
1940   if (S->isPartiallySubstituted()) {
1941     auto Args = S->getPartialArguments();
1942     ID.AddInteger(Args.size());
1943     for (const auto &TA : Args)
1944       VisitTemplateArgument(TA);
1945   } else {
1946     ID.AddInteger(0);
1947   }
1948 }
1949 
1950 void StmtProfiler::VisitSubstNonTypeTemplateParmPackExpr(
1951     const SubstNonTypeTemplateParmPackExpr *S) {
1952   VisitExpr(S);
1953   VisitDecl(S->getParameterPack());
1954   VisitTemplateArgument(S->getArgumentPack());
1955 }
1956 
1957 void StmtProfiler::VisitSubstNonTypeTemplateParmExpr(
1958     const SubstNonTypeTemplateParmExpr *E) {
1959   // Profile exactly as the replacement expression.
1960   Visit(E->getReplacement());
1961 }
1962 
1963 void StmtProfiler::VisitFunctionParmPackExpr(const FunctionParmPackExpr *S) {
1964   VisitExpr(S);
1965   VisitDecl(S->getParameterPack());
1966   ID.AddInteger(S->getNumExpansions());
1967   for (FunctionParmPackExpr::iterator I = S->begin(), E = S->end(); I != E; ++I)
1968     VisitDecl(*I);
1969 }
1970 
1971 void StmtProfiler::VisitMaterializeTemporaryExpr(
1972                                            const MaterializeTemporaryExpr *S) {
1973   VisitExpr(S);
1974 }
1975 
1976 void StmtProfiler::VisitCXXFoldExpr(const CXXFoldExpr *S) {
1977   VisitExpr(S);
1978   ID.AddInteger(S->getOperator());
1979 }
1980 
1981 void StmtProfiler::VisitCoroutineBodyStmt(const CoroutineBodyStmt *S) {
1982   VisitStmt(S);
1983 }
1984 
1985 void StmtProfiler::VisitCoreturnStmt(const CoreturnStmt *S) {
1986   VisitStmt(S);
1987 }
1988 
1989 void StmtProfiler::VisitCoawaitExpr(const CoawaitExpr *S) {
1990   VisitExpr(S);
1991 }
1992 
1993 void StmtProfiler::VisitDependentCoawaitExpr(const DependentCoawaitExpr *S) {
1994   VisitExpr(S);
1995 }
1996 
1997 void StmtProfiler::VisitCoyieldExpr(const CoyieldExpr *S) {
1998   VisitExpr(S);
1999 }
2000 
2001 void StmtProfiler::VisitOpaqueValueExpr(const OpaqueValueExpr *E) {
2002   VisitExpr(E);
2003 }
2004 
2005 void StmtProfiler::VisitTypoExpr(const TypoExpr *E) {
2006   VisitExpr(E);
2007 }
2008 
2009 void StmtProfiler::VisitSourceLocExpr(const SourceLocExpr *E) {
2010   VisitExpr(E);
2011 }
2012 
2013 void StmtProfiler::VisitObjCStringLiteral(const ObjCStringLiteral *S) {
2014   VisitExpr(S);
2015 }
2016 
2017 void StmtProfiler::VisitObjCBoxedExpr(const ObjCBoxedExpr *E) {
2018   VisitExpr(E);
2019 }
2020 
2021 void StmtProfiler::VisitObjCArrayLiteral(const ObjCArrayLiteral *E) {
2022   VisitExpr(E);
2023 }
2024 
2025 void StmtProfiler::VisitObjCDictionaryLiteral(const ObjCDictionaryLiteral *E) {
2026   VisitExpr(E);
2027 }
2028 
2029 void StmtProfiler::VisitObjCEncodeExpr(const ObjCEncodeExpr *S) {
2030   VisitExpr(S);
2031   VisitType(S->getEncodedType());
2032 }
2033 
2034 void StmtProfiler::VisitObjCSelectorExpr(const ObjCSelectorExpr *S) {
2035   VisitExpr(S);
2036   VisitName(S->getSelector());
2037 }
2038 
2039 void StmtProfiler::VisitObjCProtocolExpr(const ObjCProtocolExpr *S) {
2040   VisitExpr(S);
2041   VisitDecl(S->getProtocol());
2042 }
2043 
2044 void StmtProfiler::VisitObjCIvarRefExpr(const ObjCIvarRefExpr *S) {
2045   VisitExpr(S);
2046   VisitDecl(S->getDecl());
2047   ID.AddBoolean(S->isArrow());
2048   ID.AddBoolean(S->isFreeIvar());
2049 }
2050 
2051 void StmtProfiler::VisitObjCPropertyRefExpr(const ObjCPropertyRefExpr *S) {
2052   VisitExpr(S);
2053   if (S->isImplicitProperty()) {
2054     VisitDecl(S->getImplicitPropertyGetter());
2055     VisitDecl(S->getImplicitPropertySetter());
2056   } else {
2057     VisitDecl(S->getExplicitProperty());
2058   }
2059   if (S->isSuperReceiver()) {
2060     ID.AddBoolean(S->isSuperReceiver());
2061     VisitType(S->getSuperReceiverType());
2062   }
2063 }
2064 
2065 void StmtProfiler::VisitObjCSubscriptRefExpr(const ObjCSubscriptRefExpr *S) {
2066   VisitExpr(S);
2067   VisitDecl(S->getAtIndexMethodDecl());
2068   VisitDecl(S->setAtIndexMethodDecl());
2069 }
2070 
2071 void StmtProfiler::VisitObjCMessageExpr(const ObjCMessageExpr *S) {
2072   VisitExpr(S);
2073   VisitName(S->getSelector());
2074   VisitDecl(S->getMethodDecl());
2075 }
2076 
2077 void StmtProfiler::VisitObjCIsaExpr(const ObjCIsaExpr *S) {
2078   VisitExpr(S);
2079   ID.AddBoolean(S->isArrow());
2080 }
2081 
2082 void StmtProfiler::VisitObjCBoolLiteralExpr(const ObjCBoolLiteralExpr *S) {
2083   VisitExpr(S);
2084   ID.AddBoolean(S->getValue());
2085 }
2086 
2087 void StmtProfiler::VisitObjCIndirectCopyRestoreExpr(
2088     const ObjCIndirectCopyRestoreExpr *S) {
2089   VisitExpr(S);
2090   ID.AddBoolean(S->shouldCopy());
2091 }
2092 
2093 void StmtProfiler::VisitObjCBridgedCastExpr(const ObjCBridgedCastExpr *S) {
2094   VisitExplicitCastExpr(S);
2095   ID.AddBoolean(S->getBridgeKind());
2096 }
2097 
2098 void StmtProfiler::VisitObjCAvailabilityCheckExpr(
2099     const ObjCAvailabilityCheckExpr *S) {
2100   VisitExpr(S);
2101 }
2102 
2103 void StmtProfiler::VisitTemplateArguments(const TemplateArgumentLoc *Args,
2104                                           unsigned NumArgs) {
2105   ID.AddInteger(NumArgs);
2106   for (unsigned I = 0; I != NumArgs; ++I)
2107     VisitTemplateArgument(Args[I].getArgument());
2108 }
2109 
2110 void StmtProfiler::VisitTemplateArgument(const TemplateArgument &Arg) {
2111   // Mostly repetitive with TemplateArgument::Profile!
2112   ID.AddInteger(Arg.getKind());
2113   switch (Arg.getKind()) {
2114   case TemplateArgument::Null:
2115     break;
2116 
2117   case TemplateArgument::Type:
2118     VisitType(Arg.getAsType());
2119     break;
2120 
2121   case TemplateArgument::Template:
2122   case TemplateArgument::TemplateExpansion:
2123     VisitTemplateName(Arg.getAsTemplateOrTemplatePattern());
2124     break;
2125 
2126   case TemplateArgument::Declaration:
2127     VisitDecl(Arg.getAsDecl());
2128     break;
2129 
2130   case TemplateArgument::NullPtr:
2131     VisitType(Arg.getNullPtrType());
2132     break;
2133 
2134   case TemplateArgument::Integral:
2135     Arg.getAsIntegral().Profile(ID);
2136     VisitType(Arg.getIntegralType());
2137     break;
2138 
2139   case TemplateArgument::Expression:
2140     Visit(Arg.getAsExpr());
2141     break;
2142 
2143   case TemplateArgument::Pack:
2144     for (const auto &P : Arg.pack_elements())
2145       VisitTemplateArgument(P);
2146     break;
2147   }
2148 }
2149 
2150 void Stmt::Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
2151                    bool Canonical) const {
2152   StmtProfilerWithPointers Profiler(ID, Context, Canonical);
2153   Profiler.Visit(this);
2154 }
2155 
2156 void Stmt::ProcessODRHash(llvm::FoldingSetNodeID &ID,
2157                           class ODRHash &Hash) const {
2158   StmtProfilerWithoutPointers Profiler(ID, Hash);
2159   Profiler.Visit(this);
2160 }
2161