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