1 //===---- StmtProfile.cpp - Profile implementation for Stmt ASTs ----------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file implements the Stmt::Profile method, which builds a unique bit
11 // representation that identifies a statement/expression.
12 //
13 //===----------------------------------------------------------------------===//
14 #include "clang/AST/ASTContext.h"
15 #include "clang/AST/DeclCXX.h"
16 #include "clang/AST/DeclObjC.h"
17 #include "clang/AST/DeclTemplate.h"
18 #include "clang/AST/Expr.h"
19 #include "clang/AST/ExprCXX.h"
20 #include "clang/AST/ExprObjC.h"
21 #include "clang/AST/ExprOpenMP.h"
22 #include "clang/AST/ODRHash.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 }
326 
327 void StmtProfiler::VisitMSAsmStmt(const MSAsmStmt *S) {
328   // FIXME: Implement MS style inline asm statement profiler.
329   VisitStmt(S);
330 }
331 
332 void StmtProfiler::VisitCXXCatchStmt(const CXXCatchStmt *S) {
333   VisitStmt(S);
334   VisitType(S->getCaughtType());
335 }
336 
337 void StmtProfiler::VisitCXXTryStmt(const CXXTryStmt *S) {
338   VisitStmt(S);
339 }
340 
341 void StmtProfiler::VisitCXXForRangeStmt(const CXXForRangeStmt *S) {
342   VisitStmt(S);
343 }
344 
345 void StmtProfiler::VisitMSDependentExistsStmt(const MSDependentExistsStmt *S) {
346   VisitStmt(S);
347   ID.AddBoolean(S->isIfExists());
348   VisitNestedNameSpecifier(S->getQualifierLoc().getNestedNameSpecifier());
349   VisitName(S->getNameInfo().getName());
350 }
351 
352 void StmtProfiler::VisitSEHTryStmt(const SEHTryStmt *S) {
353   VisitStmt(S);
354 }
355 
356 void StmtProfiler::VisitSEHFinallyStmt(const SEHFinallyStmt *S) {
357   VisitStmt(S);
358 }
359 
360 void StmtProfiler::VisitSEHExceptStmt(const SEHExceptStmt *S) {
361   VisitStmt(S);
362 }
363 
364 void StmtProfiler::VisitSEHLeaveStmt(const SEHLeaveStmt *S) {
365   VisitStmt(S);
366 }
367 
368 void StmtProfiler::VisitCapturedStmt(const CapturedStmt *S) {
369   VisitStmt(S);
370 }
371 
372 void StmtProfiler::VisitObjCForCollectionStmt(const ObjCForCollectionStmt *S) {
373   VisitStmt(S);
374 }
375 
376 void StmtProfiler::VisitObjCAtCatchStmt(const ObjCAtCatchStmt *S) {
377   VisitStmt(S);
378   ID.AddBoolean(S->hasEllipsis());
379   if (S->getCatchParamDecl())
380     VisitType(S->getCatchParamDecl()->getType());
381 }
382 
383 void StmtProfiler::VisitObjCAtFinallyStmt(const ObjCAtFinallyStmt *S) {
384   VisitStmt(S);
385 }
386 
387 void StmtProfiler::VisitObjCAtTryStmt(const ObjCAtTryStmt *S) {
388   VisitStmt(S);
389 }
390 
391 void
392 StmtProfiler::VisitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt *S) {
393   VisitStmt(S);
394 }
395 
396 void StmtProfiler::VisitObjCAtThrowStmt(const ObjCAtThrowStmt *S) {
397   VisitStmt(S);
398 }
399 
400 void
401 StmtProfiler::VisitObjCAutoreleasePoolStmt(const ObjCAutoreleasePoolStmt *S) {
402   VisitStmt(S);
403 }
404 
405 namespace {
406 class OMPClauseProfiler : public ConstOMPClauseVisitor<OMPClauseProfiler> {
407   StmtProfiler *Profiler;
408   /// Process clauses with list of variables.
409   template <typename T>
410   void VisitOMPClauseList(T *Node);
411 
412 public:
413   OMPClauseProfiler(StmtProfiler *P) : Profiler(P) { }
414 #define OPENMP_CLAUSE(Name, Class)                                             \
415   void Visit##Class(const Class *C);
416 #include "clang/Basic/OpenMPKinds.def"
417   void VistOMPClauseWithPreInit(const OMPClauseWithPreInit *C);
418   void VistOMPClauseWithPostUpdate(const OMPClauseWithPostUpdate *C);
419 };
420 
421 void OMPClauseProfiler::VistOMPClauseWithPreInit(
422     const OMPClauseWithPreInit *C) {
423   if (auto *S = C->getPreInitStmt())
424     Profiler->VisitStmt(S);
425 }
426 
427 void OMPClauseProfiler::VistOMPClauseWithPostUpdate(
428     const OMPClauseWithPostUpdate *C) {
429   VistOMPClauseWithPreInit(C);
430   if (auto *E = C->getPostUpdateExpr())
431     Profiler->VisitStmt(E);
432 }
433 
434 void OMPClauseProfiler::VisitOMPIfClause(const OMPIfClause *C) {
435   VistOMPClauseWithPreInit(C);
436   if (C->getCondition())
437     Profiler->VisitStmt(C->getCondition());
438 }
439 
440 void OMPClauseProfiler::VisitOMPFinalClause(const OMPFinalClause *C) {
441   if (C->getCondition())
442     Profiler->VisitStmt(C->getCondition());
443 }
444 
445 void OMPClauseProfiler::VisitOMPNumThreadsClause(const OMPNumThreadsClause *C) {
446   VistOMPClauseWithPreInit(C);
447   if (C->getNumThreads())
448     Profiler->VisitStmt(C->getNumThreads());
449 }
450 
451 void OMPClauseProfiler::VisitOMPSafelenClause(const OMPSafelenClause *C) {
452   if (C->getSafelen())
453     Profiler->VisitStmt(C->getSafelen());
454 }
455 
456 void OMPClauseProfiler::VisitOMPSimdlenClause(const OMPSimdlenClause *C) {
457   if (C->getSimdlen())
458     Profiler->VisitStmt(C->getSimdlen());
459 }
460 
461 void OMPClauseProfiler::VisitOMPCollapseClause(const OMPCollapseClause *C) {
462   if (C->getNumForLoops())
463     Profiler->VisitStmt(C->getNumForLoops());
464 }
465 
466 void OMPClauseProfiler::VisitOMPDefaultClause(const OMPDefaultClause *C) { }
467 
468 void OMPClauseProfiler::VisitOMPProcBindClause(const OMPProcBindClause *C) { }
469 
470 void OMPClauseProfiler::VisitOMPScheduleClause(const OMPScheduleClause *C) {
471   VistOMPClauseWithPreInit(C);
472   if (auto *S = C->getChunkSize())
473     Profiler->VisitStmt(S);
474 }
475 
476 void OMPClauseProfiler::VisitOMPOrderedClause(const OMPOrderedClause *C) {
477   if (auto *Num = C->getNumForLoops())
478     Profiler->VisitStmt(Num);
479 }
480 
481 void OMPClauseProfiler::VisitOMPNowaitClause(const OMPNowaitClause *) {}
482 
483 void OMPClauseProfiler::VisitOMPUntiedClause(const OMPUntiedClause *) {}
484 
485 void OMPClauseProfiler::VisitOMPMergeableClause(const OMPMergeableClause *) {}
486 
487 void OMPClauseProfiler::VisitOMPReadClause(const OMPReadClause *) {}
488 
489 void OMPClauseProfiler::VisitOMPWriteClause(const OMPWriteClause *) {}
490 
491 void OMPClauseProfiler::VisitOMPUpdateClause(const OMPUpdateClause *) {}
492 
493 void OMPClauseProfiler::VisitOMPCaptureClause(const OMPCaptureClause *) {}
494 
495 void OMPClauseProfiler::VisitOMPSeqCstClause(const OMPSeqCstClause *) {}
496 
497 void OMPClauseProfiler::VisitOMPThreadsClause(const OMPThreadsClause *) {}
498 
499 void OMPClauseProfiler::VisitOMPSIMDClause(const OMPSIMDClause *) {}
500 
501 void OMPClauseProfiler::VisitOMPNogroupClause(const OMPNogroupClause *) {}
502 
503 template<typename T>
504 void OMPClauseProfiler::VisitOMPClauseList(T *Node) {
505   for (auto *E : Node->varlists()) {
506     if (E)
507       Profiler->VisitStmt(E);
508   }
509 }
510 
511 void OMPClauseProfiler::VisitOMPPrivateClause(const OMPPrivateClause *C) {
512   VisitOMPClauseList(C);
513   for (auto *E : C->private_copies()) {
514     if (E)
515       Profiler->VisitStmt(E);
516   }
517 }
518 void
519 OMPClauseProfiler::VisitOMPFirstprivateClause(const OMPFirstprivateClause *C) {
520   VisitOMPClauseList(C);
521   VistOMPClauseWithPreInit(C);
522   for (auto *E : C->private_copies()) {
523     if (E)
524       Profiler->VisitStmt(E);
525   }
526   for (auto *E : C->inits()) {
527     if (E)
528       Profiler->VisitStmt(E);
529   }
530 }
531 void
532 OMPClauseProfiler::VisitOMPLastprivateClause(const OMPLastprivateClause *C) {
533   VisitOMPClauseList(C);
534   VistOMPClauseWithPostUpdate(C);
535   for (auto *E : C->source_exprs()) {
536     if (E)
537       Profiler->VisitStmt(E);
538   }
539   for (auto *E : C->destination_exprs()) {
540     if (E)
541       Profiler->VisitStmt(E);
542   }
543   for (auto *E : C->assignment_ops()) {
544     if (E)
545       Profiler->VisitStmt(E);
546   }
547 }
548 void OMPClauseProfiler::VisitOMPSharedClause(const OMPSharedClause *C) {
549   VisitOMPClauseList(C);
550 }
551 void OMPClauseProfiler::VisitOMPReductionClause(
552                                          const OMPReductionClause *C) {
553   Profiler->VisitNestedNameSpecifier(
554       C->getQualifierLoc().getNestedNameSpecifier());
555   Profiler->VisitName(C->getNameInfo().getName());
556   VisitOMPClauseList(C);
557   VistOMPClauseWithPostUpdate(C);
558   for (auto *E : C->privates()) {
559     if (E)
560       Profiler->VisitStmt(E);
561   }
562   for (auto *E : C->lhs_exprs()) {
563     if (E)
564       Profiler->VisitStmt(E);
565   }
566   for (auto *E : C->rhs_exprs()) {
567     if (E)
568       Profiler->VisitStmt(E);
569   }
570   for (auto *E : C->reduction_ops()) {
571     if (E)
572       Profiler->VisitStmt(E);
573   }
574 }
575 void OMPClauseProfiler::VisitOMPTaskReductionClause(
576     const OMPTaskReductionClause *C) {
577   Profiler->VisitNestedNameSpecifier(
578       C->getQualifierLoc().getNestedNameSpecifier());
579   Profiler->VisitName(C->getNameInfo().getName());
580   VisitOMPClauseList(C);
581   VistOMPClauseWithPostUpdate(C);
582   for (auto *E : C->privates()) {
583     if (E)
584       Profiler->VisitStmt(E);
585   }
586   for (auto *E : C->lhs_exprs()) {
587     if (E)
588       Profiler->VisitStmt(E);
589   }
590   for (auto *E : C->rhs_exprs()) {
591     if (E)
592       Profiler->VisitStmt(E);
593   }
594   for (auto *E : C->reduction_ops()) {
595     if (E)
596       Profiler->VisitStmt(E);
597   }
598 }
599 void OMPClauseProfiler::VisitOMPInReductionClause(
600     const OMPInReductionClause *C) {
601   Profiler->VisitNestedNameSpecifier(
602       C->getQualifierLoc().getNestedNameSpecifier());
603   Profiler->VisitName(C->getNameInfo().getName());
604   VisitOMPClauseList(C);
605   VistOMPClauseWithPostUpdate(C);
606   for (auto *E : C->privates()) {
607     if (E)
608       Profiler->VisitStmt(E);
609   }
610   for (auto *E : C->lhs_exprs()) {
611     if (E)
612       Profiler->VisitStmt(E);
613   }
614   for (auto *E : C->rhs_exprs()) {
615     if (E)
616       Profiler->VisitStmt(E);
617   }
618   for (auto *E : C->reduction_ops()) {
619     if (E)
620       Profiler->VisitStmt(E);
621   }
622   for (auto *E : C->taskgroup_descriptors()) {
623     if (E)
624       Profiler->VisitStmt(E);
625   }
626 }
627 void OMPClauseProfiler::VisitOMPLinearClause(const OMPLinearClause *C) {
628   VisitOMPClauseList(C);
629   VistOMPClauseWithPostUpdate(C);
630   for (auto *E : C->privates()) {
631     if (E)
632       Profiler->VisitStmt(E);
633   }
634   for (auto *E : C->inits()) {
635     if (E)
636       Profiler->VisitStmt(E);
637   }
638   for (auto *E : C->updates()) {
639     if (E)
640       Profiler->VisitStmt(E);
641   }
642   for (auto *E : C->finals()) {
643     if (E)
644       Profiler->VisitStmt(E);
645   }
646   if (C->getStep())
647     Profiler->VisitStmt(C->getStep());
648   if (C->getCalcStep())
649     Profiler->VisitStmt(C->getCalcStep());
650 }
651 void OMPClauseProfiler::VisitOMPAlignedClause(const OMPAlignedClause *C) {
652   VisitOMPClauseList(C);
653   if (C->getAlignment())
654     Profiler->VisitStmt(C->getAlignment());
655 }
656 void OMPClauseProfiler::VisitOMPCopyinClause(const OMPCopyinClause *C) {
657   VisitOMPClauseList(C);
658   for (auto *E : C->source_exprs()) {
659     if (E)
660       Profiler->VisitStmt(E);
661   }
662   for (auto *E : C->destination_exprs()) {
663     if (E)
664       Profiler->VisitStmt(E);
665   }
666   for (auto *E : C->assignment_ops()) {
667     if (E)
668       Profiler->VisitStmt(E);
669   }
670 }
671 void
672 OMPClauseProfiler::VisitOMPCopyprivateClause(const OMPCopyprivateClause *C) {
673   VisitOMPClauseList(C);
674   for (auto *E : C->source_exprs()) {
675     if (E)
676       Profiler->VisitStmt(E);
677   }
678   for (auto *E : C->destination_exprs()) {
679     if (E)
680       Profiler->VisitStmt(E);
681   }
682   for (auto *E : C->assignment_ops()) {
683     if (E)
684       Profiler->VisitStmt(E);
685   }
686 }
687 void OMPClauseProfiler::VisitOMPFlushClause(const OMPFlushClause *C) {
688   VisitOMPClauseList(C);
689 }
690 void OMPClauseProfiler::VisitOMPDependClause(const OMPDependClause *C) {
691   VisitOMPClauseList(C);
692 }
693 void OMPClauseProfiler::VisitOMPDeviceClause(const OMPDeviceClause *C) {
694   if (C->getDevice())
695     Profiler->VisitStmt(C->getDevice());
696 }
697 void OMPClauseProfiler::VisitOMPMapClause(const OMPMapClause *C) {
698   VisitOMPClauseList(C);
699 }
700 void OMPClauseProfiler::VisitOMPNumTeamsClause(const OMPNumTeamsClause *C) {
701   VistOMPClauseWithPreInit(C);
702   if (C->getNumTeams())
703     Profiler->VisitStmt(C->getNumTeams());
704 }
705 void OMPClauseProfiler::VisitOMPThreadLimitClause(
706     const OMPThreadLimitClause *C) {
707   VistOMPClauseWithPreInit(C);
708   if (C->getThreadLimit())
709     Profiler->VisitStmt(C->getThreadLimit());
710 }
711 void OMPClauseProfiler::VisitOMPPriorityClause(const OMPPriorityClause *C) {
712   if (C->getPriority())
713     Profiler->VisitStmt(C->getPriority());
714 }
715 void OMPClauseProfiler::VisitOMPGrainsizeClause(const OMPGrainsizeClause *C) {
716   if (C->getGrainsize())
717     Profiler->VisitStmt(C->getGrainsize());
718 }
719 void OMPClauseProfiler::VisitOMPNumTasksClause(const OMPNumTasksClause *C) {
720   if (C->getNumTasks())
721     Profiler->VisitStmt(C->getNumTasks());
722 }
723 void OMPClauseProfiler::VisitOMPHintClause(const OMPHintClause *C) {
724   if (C->getHint())
725     Profiler->VisitStmt(C->getHint());
726 }
727 void OMPClauseProfiler::VisitOMPToClause(const OMPToClause *C) {
728   VisitOMPClauseList(C);
729 }
730 void OMPClauseProfiler::VisitOMPFromClause(const OMPFromClause *C) {
731   VisitOMPClauseList(C);
732 }
733 void OMPClauseProfiler::VisitOMPUseDevicePtrClause(
734     const OMPUseDevicePtrClause *C) {
735   VisitOMPClauseList(C);
736 }
737 void OMPClauseProfiler::VisitOMPIsDevicePtrClause(
738     const OMPIsDevicePtrClause *C) {
739   VisitOMPClauseList(C);
740 }
741 }
742 
743 void
744 StmtProfiler::VisitOMPExecutableDirective(const OMPExecutableDirective *S) {
745   VisitStmt(S);
746   OMPClauseProfiler P(this);
747   ArrayRef<OMPClause *> Clauses = S->clauses();
748   for (ArrayRef<OMPClause *>::iterator I = Clauses.begin(), E = Clauses.end();
749        I != E; ++I)
750     if (*I)
751       P.Visit(*I);
752 }
753 
754 void StmtProfiler::VisitOMPLoopDirective(const OMPLoopDirective *S) {
755   VisitOMPExecutableDirective(S);
756 }
757 
758 void StmtProfiler::VisitOMPParallelDirective(const OMPParallelDirective *S) {
759   VisitOMPExecutableDirective(S);
760 }
761 
762 void StmtProfiler::VisitOMPSimdDirective(const OMPSimdDirective *S) {
763   VisitOMPLoopDirective(S);
764 }
765 
766 void StmtProfiler::VisitOMPForDirective(const OMPForDirective *S) {
767   VisitOMPLoopDirective(S);
768 }
769 
770 void StmtProfiler::VisitOMPForSimdDirective(const OMPForSimdDirective *S) {
771   VisitOMPLoopDirective(S);
772 }
773 
774 void StmtProfiler::VisitOMPSectionsDirective(const OMPSectionsDirective *S) {
775   VisitOMPExecutableDirective(S);
776 }
777 
778 void StmtProfiler::VisitOMPSectionDirective(const OMPSectionDirective *S) {
779   VisitOMPExecutableDirective(S);
780 }
781 
782 void StmtProfiler::VisitOMPSingleDirective(const OMPSingleDirective *S) {
783   VisitOMPExecutableDirective(S);
784 }
785 
786 void StmtProfiler::VisitOMPMasterDirective(const OMPMasterDirective *S) {
787   VisitOMPExecutableDirective(S);
788 }
789 
790 void StmtProfiler::VisitOMPCriticalDirective(const OMPCriticalDirective *S) {
791   VisitOMPExecutableDirective(S);
792   VisitName(S->getDirectiveName().getName());
793 }
794 
795 void
796 StmtProfiler::VisitOMPParallelForDirective(const OMPParallelForDirective *S) {
797   VisitOMPLoopDirective(S);
798 }
799 
800 void StmtProfiler::VisitOMPParallelForSimdDirective(
801     const OMPParallelForSimdDirective *S) {
802   VisitOMPLoopDirective(S);
803 }
804 
805 void StmtProfiler::VisitOMPParallelSectionsDirective(
806     const OMPParallelSectionsDirective *S) {
807   VisitOMPExecutableDirective(S);
808 }
809 
810 void StmtProfiler::VisitOMPTaskDirective(const OMPTaskDirective *S) {
811   VisitOMPExecutableDirective(S);
812 }
813 
814 void StmtProfiler::VisitOMPTaskyieldDirective(const OMPTaskyieldDirective *S) {
815   VisitOMPExecutableDirective(S);
816 }
817 
818 void StmtProfiler::VisitOMPBarrierDirective(const OMPBarrierDirective *S) {
819   VisitOMPExecutableDirective(S);
820 }
821 
822 void StmtProfiler::VisitOMPTaskwaitDirective(const OMPTaskwaitDirective *S) {
823   VisitOMPExecutableDirective(S);
824 }
825 
826 void StmtProfiler::VisitOMPTaskgroupDirective(const OMPTaskgroupDirective *S) {
827   VisitOMPExecutableDirective(S);
828   if (const Expr *E = S->getReductionRef())
829     VisitStmt(E);
830 }
831 
832 void StmtProfiler::VisitOMPFlushDirective(const OMPFlushDirective *S) {
833   VisitOMPExecutableDirective(S);
834 }
835 
836 void StmtProfiler::VisitOMPOrderedDirective(const OMPOrderedDirective *S) {
837   VisitOMPExecutableDirective(S);
838 }
839 
840 void StmtProfiler::VisitOMPAtomicDirective(const OMPAtomicDirective *S) {
841   VisitOMPExecutableDirective(S);
842 }
843 
844 void StmtProfiler::VisitOMPTargetDirective(const OMPTargetDirective *S) {
845   VisitOMPExecutableDirective(S);
846 }
847 
848 void StmtProfiler::VisitOMPTargetDataDirective(const OMPTargetDataDirective *S) {
849   VisitOMPExecutableDirective(S);
850 }
851 
852 void StmtProfiler::VisitOMPTargetEnterDataDirective(
853     const OMPTargetEnterDataDirective *S) {
854   VisitOMPExecutableDirective(S);
855 }
856 
857 void StmtProfiler::VisitOMPTargetExitDataDirective(
858     const OMPTargetExitDataDirective *S) {
859   VisitOMPExecutableDirective(S);
860 }
861 
862 void StmtProfiler::VisitOMPTargetParallelDirective(
863     const OMPTargetParallelDirective *S) {
864   VisitOMPExecutableDirective(S);
865 }
866 
867 void StmtProfiler::VisitOMPTargetParallelForDirective(
868     const OMPTargetParallelForDirective *S) {
869   VisitOMPExecutableDirective(S);
870 }
871 
872 void StmtProfiler::VisitOMPTeamsDirective(const OMPTeamsDirective *S) {
873   VisitOMPExecutableDirective(S);
874 }
875 
876 void StmtProfiler::VisitOMPCancellationPointDirective(
877     const OMPCancellationPointDirective *S) {
878   VisitOMPExecutableDirective(S);
879 }
880 
881 void StmtProfiler::VisitOMPCancelDirective(const OMPCancelDirective *S) {
882   VisitOMPExecutableDirective(S);
883 }
884 
885 void StmtProfiler::VisitOMPTaskLoopDirective(const OMPTaskLoopDirective *S) {
886   VisitOMPLoopDirective(S);
887 }
888 
889 void StmtProfiler::VisitOMPTaskLoopSimdDirective(
890     const OMPTaskLoopSimdDirective *S) {
891   VisitOMPLoopDirective(S);
892 }
893 
894 void StmtProfiler::VisitOMPDistributeDirective(
895     const OMPDistributeDirective *S) {
896   VisitOMPLoopDirective(S);
897 }
898 
899 void OMPClauseProfiler::VisitOMPDistScheduleClause(
900     const OMPDistScheduleClause *C) {
901   VistOMPClauseWithPreInit(C);
902   if (auto *S = C->getChunkSize())
903     Profiler->VisitStmt(S);
904 }
905 
906 void OMPClauseProfiler::VisitOMPDefaultmapClause(const OMPDefaultmapClause *) {}
907 
908 void StmtProfiler::VisitOMPTargetUpdateDirective(
909     const OMPTargetUpdateDirective *S) {
910   VisitOMPExecutableDirective(S);
911 }
912 
913 void StmtProfiler::VisitOMPDistributeParallelForDirective(
914     const OMPDistributeParallelForDirective *S) {
915   VisitOMPLoopDirective(S);
916 }
917 
918 void StmtProfiler::VisitOMPDistributeParallelForSimdDirective(
919     const OMPDistributeParallelForSimdDirective *S) {
920   VisitOMPLoopDirective(S);
921 }
922 
923 void StmtProfiler::VisitOMPDistributeSimdDirective(
924     const OMPDistributeSimdDirective *S) {
925   VisitOMPLoopDirective(S);
926 }
927 
928 void StmtProfiler::VisitOMPTargetParallelForSimdDirective(
929     const OMPTargetParallelForSimdDirective *S) {
930   VisitOMPLoopDirective(S);
931 }
932 
933 void StmtProfiler::VisitOMPTargetSimdDirective(
934     const OMPTargetSimdDirective *S) {
935   VisitOMPLoopDirective(S);
936 }
937 
938 void StmtProfiler::VisitOMPTeamsDistributeDirective(
939     const OMPTeamsDistributeDirective *S) {
940   VisitOMPLoopDirective(S);
941 }
942 
943 void StmtProfiler::VisitOMPTeamsDistributeSimdDirective(
944     const OMPTeamsDistributeSimdDirective *S) {
945   VisitOMPLoopDirective(S);
946 }
947 
948 void StmtProfiler::VisitOMPTeamsDistributeParallelForSimdDirective(
949     const OMPTeamsDistributeParallelForSimdDirective *S) {
950   VisitOMPLoopDirective(S);
951 }
952 
953 void StmtProfiler::VisitOMPTeamsDistributeParallelForDirective(
954     const OMPTeamsDistributeParallelForDirective *S) {
955   VisitOMPLoopDirective(S);
956 }
957 
958 void StmtProfiler::VisitOMPTargetTeamsDirective(
959     const OMPTargetTeamsDirective *S) {
960   VisitOMPExecutableDirective(S);
961 }
962 
963 void StmtProfiler::VisitOMPTargetTeamsDistributeDirective(
964     const OMPTargetTeamsDistributeDirective *S) {
965   VisitOMPLoopDirective(S);
966 }
967 
968 void StmtProfiler::VisitOMPTargetTeamsDistributeParallelForDirective(
969     const OMPTargetTeamsDistributeParallelForDirective *S) {
970   VisitOMPLoopDirective(S);
971 }
972 
973 void StmtProfiler::VisitOMPTargetTeamsDistributeParallelForSimdDirective(
974     const OMPTargetTeamsDistributeParallelForSimdDirective *S) {
975   VisitOMPLoopDirective(S);
976 }
977 
978 void StmtProfiler::VisitOMPTargetTeamsDistributeSimdDirective(
979     const OMPTargetTeamsDistributeSimdDirective *S) {
980   VisitOMPLoopDirective(S);
981 }
982 
983 void StmtProfiler::VisitExpr(const Expr *S) {
984   VisitStmt(S);
985 }
986 
987 void StmtProfiler::VisitDeclRefExpr(const DeclRefExpr *S) {
988   VisitExpr(S);
989   if (!Canonical)
990     VisitNestedNameSpecifier(S->getQualifier());
991   VisitDecl(S->getDecl());
992   if (!Canonical) {
993     ID.AddBoolean(S->hasExplicitTemplateArgs());
994     if (S->hasExplicitTemplateArgs())
995       VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
996   }
997 }
998 
999 void StmtProfiler::VisitPredefinedExpr(const PredefinedExpr *S) {
1000   VisitExpr(S);
1001   ID.AddInteger(S->getIdentType());
1002 }
1003 
1004 void StmtProfiler::VisitIntegerLiteral(const IntegerLiteral *S) {
1005   VisitExpr(S);
1006   S->getValue().Profile(ID);
1007   ID.AddInteger(S->getType()->castAs<BuiltinType>()->getKind());
1008 }
1009 
1010 void StmtProfiler::VisitFixedPointLiteral(const FixedPointLiteral *S) {
1011   VisitExpr(S);
1012   S->getValue().Profile(ID);
1013   ID.AddInteger(S->getType()->castAs<BuiltinType>()->getKind());
1014 }
1015 
1016 void StmtProfiler::VisitCharacterLiteral(const CharacterLiteral *S) {
1017   VisitExpr(S);
1018   ID.AddInteger(S->getKind());
1019   ID.AddInteger(S->getValue());
1020 }
1021 
1022 void StmtProfiler::VisitFloatingLiteral(const FloatingLiteral *S) {
1023   VisitExpr(S);
1024   S->getValue().Profile(ID);
1025   ID.AddBoolean(S->isExact());
1026   ID.AddInteger(S->getType()->castAs<BuiltinType>()->getKind());
1027 }
1028 
1029 void StmtProfiler::VisitImaginaryLiteral(const ImaginaryLiteral *S) {
1030   VisitExpr(S);
1031 }
1032 
1033 void StmtProfiler::VisitStringLiteral(const StringLiteral *S) {
1034   VisitExpr(S);
1035   ID.AddString(S->getBytes());
1036   ID.AddInteger(S->getKind());
1037 }
1038 
1039 void StmtProfiler::VisitParenExpr(const ParenExpr *S) {
1040   VisitExpr(S);
1041 }
1042 
1043 void StmtProfiler::VisitParenListExpr(const ParenListExpr *S) {
1044   VisitExpr(S);
1045 }
1046 
1047 void StmtProfiler::VisitUnaryOperator(const UnaryOperator *S) {
1048   VisitExpr(S);
1049   ID.AddInteger(S->getOpcode());
1050 }
1051 
1052 void StmtProfiler::VisitOffsetOfExpr(const OffsetOfExpr *S) {
1053   VisitType(S->getTypeSourceInfo()->getType());
1054   unsigned n = S->getNumComponents();
1055   for (unsigned i = 0; i < n; ++i) {
1056     const OffsetOfNode &ON = S->getComponent(i);
1057     ID.AddInteger(ON.getKind());
1058     switch (ON.getKind()) {
1059     case OffsetOfNode::Array:
1060       // Expressions handled below.
1061       break;
1062 
1063     case OffsetOfNode::Field:
1064       VisitDecl(ON.getField());
1065       break;
1066 
1067     case OffsetOfNode::Identifier:
1068       VisitIdentifierInfo(ON.getFieldName());
1069       break;
1070 
1071     case OffsetOfNode::Base:
1072       // These nodes are implicit, and therefore don't need profiling.
1073       break;
1074     }
1075   }
1076 
1077   VisitExpr(S);
1078 }
1079 
1080 void
1081 StmtProfiler::VisitUnaryExprOrTypeTraitExpr(const UnaryExprOrTypeTraitExpr *S) {
1082   VisitExpr(S);
1083   ID.AddInteger(S->getKind());
1084   if (S->isArgumentType())
1085     VisitType(S->getArgumentType());
1086 }
1087 
1088 void StmtProfiler::VisitArraySubscriptExpr(const ArraySubscriptExpr *S) {
1089   VisitExpr(S);
1090 }
1091 
1092 void StmtProfiler::VisitOMPArraySectionExpr(const OMPArraySectionExpr *S) {
1093   VisitExpr(S);
1094 }
1095 
1096 void StmtProfiler::VisitCallExpr(const CallExpr *S) {
1097   VisitExpr(S);
1098 }
1099 
1100 void StmtProfiler::VisitMemberExpr(const MemberExpr *S) {
1101   VisitExpr(S);
1102   VisitDecl(S->getMemberDecl());
1103   if (!Canonical)
1104     VisitNestedNameSpecifier(S->getQualifier());
1105   ID.AddBoolean(S->isArrow());
1106 }
1107 
1108 void StmtProfiler::VisitCompoundLiteralExpr(const CompoundLiteralExpr *S) {
1109   VisitExpr(S);
1110   ID.AddBoolean(S->isFileScope());
1111 }
1112 
1113 void StmtProfiler::VisitCastExpr(const CastExpr *S) {
1114   VisitExpr(S);
1115 }
1116 
1117 void StmtProfiler::VisitImplicitCastExpr(const ImplicitCastExpr *S) {
1118   VisitCastExpr(S);
1119   ID.AddInteger(S->getValueKind());
1120 }
1121 
1122 void StmtProfiler::VisitExplicitCastExpr(const ExplicitCastExpr *S) {
1123   VisitCastExpr(S);
1124   VisitType(S->getTypeAsWritten());
1125 }
1126 
1127 void StmtProfiler::VisitCStyleCastExpr(const CStyleCastExpr *S) {
1128   VisitExplicitCastExpr(S);
1129 }
1130 
1131 void StmtProfiler::VisitBinaryOperator(const BinaryOperator *S) {
1132   VisitExpr(S);
1133   ID.AddInteger(S->getOpcode());
1134 }
1135 
1136 void
1137 StmtProfiler::VisitCompoundAssignOperator(const CompoundAssignOperator *S) {
1138   VisitBinaryOperator(S);
1139 }
1140 
1141 void StmtProfiler::VisitConditionalOperator(const ConditionalOperator *S) {
1142   VisitExpr(S);
1143 }
1144 
1145 void StmtProfiler::VisitBinaryConditionalOperator(
1146     const BinaryConditionalOperator *S) {
1147   VisitExpr(S);
1148 }
1149 
1150 void StmtProfiler::VisitAddrLabelExpr(const AddrLabelExpr *S) {
1151   VisitExpr(S);
1152   VisitDecl(S->getLabel());
1153 }
1154 
1155 void StmtProfiler::VisitStmtExpr(const StmtExpr *S) {
1156   VisitExpr(S);
1157 }
1158 
1159 void StmtProfiler::VisitShuffleVectorExpr(const ShuffleVectorExpr *S) {
1160   VisitExpr(S);
1161 }
1162 
1163 void StmtProfiler::VisitConvertVectorExpr(const ConvertVectorExpr *S) {
1164   VisitExpr(S);
1165 }
1166 
1167 void StmtProfiler::VisitChooseExpr(const ChooseExpr *S) {
1168   VisitExpr(S);
1169 }
1170 
1171 void StmtProfiler::VisitGNUNullExpr(const GNUNullExpr *S) {
1172   VisitExpr(S);
1173 }
1174 
1175 void StmtProfiler::VisitVAArgExpr(const VAArgExpr *S) {
1176   VisitExpr(S);
1177 }
1178 
1179 void StmtProfiler::VisitInitListExpr(const InitListExpr *S) {
1180   if (S->getSyntacticForm()) {
1181     VisitInitListExpr(S->getSyntacticForm());
1182     return;
1183   }
1184 
1185   VisitExpr(S);
1186 }
1187 
1188 void StmtProfiler::VisitDesignatedInitExpr(const DesignatedInitExpr *S) {
1189   VisitExpr(S);
1190   ID.AddBoolean(S->usesGNUSyntax());
1191   for (const DesignatedInitExpr::Designator &D : S->designators()) {
1192     if (D.isFieldDesignator()) {
1193       ID.AddInteger(0);
1194       VisitName(D.getFieldName());
1195       continue;
1196     }
1197 
1198     if (D.isArrayDesignator()) {
1199       ID.AddInteger(1);
1200     } else {
1201       assert(D.isArrayRangeDesignator());
1202       ID.AddInteger(2);
1203     }
1204     ID.AddInteger(D.getFirstExprIndex());
1205   }
1206 }
1207 
1208 // Seems that if VisitInitListExpr() only works on the syntactic form of an
1209 // InitListExpr, then a DesignatedInitUpdateExpr is not encountered.
1210 void StmtProfiler::VisitDesignatedInitUpdateExpr(
1211     const DesignatedInitUpdateExpr *S) {
1212   llvm_unreachable("Unexpected DesignatedInitUpdateExpr in syntactic form of "
1213                    "initializer");
1214 }
1215 
1216 void StmtProfiler::VisitArrayInitLoopExpr(const ArrayInitLoopExpr *S) {
1217   VisitExpr(S);
1218 }
1219 
1220 void StmtProfiler::VisitArrayInitIndexExpr(const ArrayInitIndexExpr *S) {
1221   VisitExpr(S);
1222 }
1223 
1224 void StmtProfiler::VisitNoInitExpr(const NoInitExpr *S) {
1225   llvm_unreachable("Unexpected NoInitExpr in syntactic form of initializer");
1226 }
1227 
1228 void StmtProfiler::VisitImplicitValueInitExpr(const ImplicitValueInitExpr *S) {
1229   VisitExpr(S);
1230 }
1231 
1232 void StmtProfiler::VisitExtVectorElementExpr(const ExtVectorElementExpr *S) {
1233   VisitExpr(S);
1234   VisitName(&S->getAccessor());
1235 }
1236 
1237 void StmtProfiler::VisitBlockExpr(const BlockExpr *S) {
1238   VisitExpr(S);
1239   VisitDecl(S->getBlockDecl());
1240 }
1241 
1242 void StmtProfiler::VisitGenericSelectionExpr(const GenericSelectionExpr *S) {
1243   VisitExpr(S);
1244   for (unsigned i = 0; i != S->getNumAssocs(); ++i) {
1245     QualType T = S->getAssocType(i);
1246     if (T.isNull())
1247       ID.AddPointer(nullptr);
1248     else
1249       VisitType(T);
1250     VisitExpr(S->getAssocExpr(i));
1251   }
1252 }
1253 
1254 void StmtProfiler::VisitPseudoObjectExpr(const PseudoObjectExpr *S) {
1255   VisitExpr(S);
1256   for (PseudoObjectExpr::const_semantics_iterator
1257          i = S->semantics_begin(), e = S->semantics_end(); i != e; ++i)
1258     // Normally, we would not profile the source expressions of OVEs.
1259     if (const OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(*i))
1260       Visit(OVE->getSourceExpr());
1261 }
1262 
1263 void StmtProfiler::VisitAtomicExpr(const AtomicExpr *S) {
1264   VisitExpr(S);
1265   ID.AddInteger(S->getOp());
1266 }
1267 
1268 static Stmt::StmtClass DecodeOperatorCall(const CXXOperatorCallExpr *S,
1269                                           UnaryOperatorKind &UnaryOp,
1270                                           BinaryOperatorKind &BinaryOp) {
1271   switch (S->getOperator()) {
1272   case OO_None:
1273   case OO_New:
1274   case OO_Delete:
1275   case OO_Array_New:
1276   case OO_Array_Delete:
1277   case OO_Arrow:
1278   case OO_Call:
1279   case OO_Conditional:
1280   case NUM_OVERLOADED_OPERATORS:
1281     llvm_unreachable("Invalid operator call kind");
1282 
1283   case OO_Plus:
1284     if (S->getNumArgs() == 1) {
1285       UnaryOp = UO_Plus;
1286       return Stmt::UnaryOperatorClass;
1287     }
1288 
1289     BinaryOp = BO_Add;
1290     return Stmt::BinaryOperatorClass;
1291 
1292   case OO_Minus:
1293     if (S->getNumArgs() == 1) {
1294       UnaryOp = UO_Minus;
1295       return Stmt::UnaryOperatorClass;
1296     }
1297 
1298     BinaryOp = BO_Sub;
1299     return Stmt::BinaryOperatorClass;
1300 
1301   case OO_Star:
1302     if (S->getNumArgs() == 1) {
1303       UnaryOp = UO_Deref;
1304       return Stmt::UnaryOperatorClass;
1305     }
1306 
1307     BinaryOp = BO_Mul;
1308     return Stmt::BinaryOperatorClass;
1309 
1310   case OO_Slash:
1311     BinaryOp = BO_Div;
1312     return Stmt::BinaryOperatorClass;
1313 
1314   case OO_Percent:
1315     BinaryOp = BO_Rem;
1316     return Stmt::BinaryOperatorClass;
1317 
1318   case OO_Caret:
1319     BinaryOp = BO_Xor;
1320     return Stmt::BinaryOperatorClass;
1321 
1322   case OO_Amp:
1323     if (S->getNumArgs() == 1) {
1324       UnaryOp = UO_AddrOf;
1325       return Stmt::UnaryOperatorClass;
1326     }
1327 
1328     BinaryOp = BO_And;
1329     return Stmt::BinaryOperatorClass;
1330 
1331   case OO_Pipe:
1332     BinaryOp = BO_Or;
1333     return Stmt::BinaryOperatorClass;
1334 
1335   case OO_Tilde:
1336     UnaryOp = UO_Not;
1337     return Stmt::UnaryOperatorClass;
1338 
1339   case OO_Exclaim:
1340     UnaryOp = UO_LNot;
1341     return Stmt::UnaryOperatorClass;
1342 
1343   case OO_Equal:
1344     BinaryOp = BO_Assign;
1345     return Stmt::BinaryOperatorClass;
1346 
1347   case OO_Less:
1348     BinaryOp = BO_LT;
1349     return Stmt::BinaryOperatorClass;
1350 
1351   case OO_Greater:
1352     BinaryOp = BO_GT;
1353     return Stmt::BinaryOperatorClass;
1354 
1355   case OO_PlusEqual:
1356     BinaryOp = BO_AddAssign;
1357     return Stmt::CompoundAssignOperatorClass;
1358 
1359   case OO_MinusEqual:
1360     BinaryOp = BO_SubAssign;
1361     return Stmt::CompoundAssignOperatorClass;
1362 
1363   case OO_StarEqual:
1364     BinaryOp = BO_MulAssign;
1365     return Stmt::CompoundAssignOperatorClass;
1366 
1367   case OO_SlashEqual:
1368     BinaryOp = BO_DivAssign;
1369     return Stmt::CompoundAssignOperatorClass;
1370 
1371   case OO_PercentEqual:
1372     BinaryOp = BO_RemAssign;
1373     return Stmt::CompoundAssignOperatorClass;
1374 
1375   case OO_CaretEqual:
1376     BinaryOp = BO_XorAssign;
1377     return Stmt::CompoundAssignOperatorClass;
1378 
1379   case OO_AmpEqual:
1380     BinaryOp = BO_AndAssign;
1381     return Stmt::CompoundAssignOperatorClass;
1382 
1383   case OO_PipeEqual:
1384     BinaryOp = BO_OrAssign;
1385     return Stmt::CompoundAssignOperatorClass;
1386 
1387   case OO_LessLess:
1388     BinaryOp = BO_Shl;
1389     return Stmt::BinaryOperatorClass;
1390 
1391   case OO_GreaterGreater:
1392     BinaryOp = BO_Shr;
1393     return Stmt::BinaryOperatorClass;
1394 
1395   case OO_LessLessEqual:
1396     BinaryOp = BO_ShlAssign;
1397     return Stmt::CompoundAssignOperatorClass;
1398 
1399   case OO_GreaterGreaterEqual:
1400     BinaryOp = BO_ShrAssign;
1401     return Stmt::CompoundAssignOperatorClass;
1402 
1403   case OO_EqualEqual:
1404     BinaryOp = BO_EQ;
1405     return Stmt::BinaryOperatorClass;
1406 
1407   case OO_ExclaimEqual:
1408     BinaryOp = BO_NE;
1409     return Stmt::BinaryOperatorClass;
1410 
1411   case OO_LessEqual:
1412     BinaryOp = BO_LE;
1413     return Stmt::BinaryOperatorClass;
1414 
1415   case OO_GreaterEqual:
1416     BinaryOp = BO_GE;
1417     return Stmt::BinaryOperatorClass;
1418 
1419   case OO_Spaceship:
1420     // FIXME: Update this once we support <=> expressions.
1421     llvm_unreachable("<=> expressions not supported yet");
1422 
1423   case OO_AmpAmp:
1424     BinaryOp = BO_LAnd;
1425     return Stmt::BinaryOperatorClass;
1426 
1427   case OO_PipePipe:
1428     BinaryOp = BO_LOr;
1429     return Stmt::BinaryOperatorClass;
1430 
1431   case OO_PlusPlus:
1432     UnaryOp = S->getNumArgs() == 1? UO_PreInc
1433                                   : UO_PostInc;
1434     return Stmt::UnaryOperatorClass;
1435 
1436   case OO_MinusMinus:
1437     UnaryOp = S->getNumArgs() == 1? UO_PreDec
1438                                   : UO_PostDec;
1439     return Stmt::UnaryOperatorClass;
1440 
1441   case OO_Comma:
1442     BinaryOp = BO_Comma;
1443     return Stmt::BinaryOperatorClass;
1444 
1445   case OO_ArrowStar:
1446     BinaryOp = BO_PtrMemI;
1447     return Stmt::BinaryOperatorClass;
1448 
1449   case OO_Subscript:
1450     return Stmt::ArraySubscriptExprClass;
1451 
1452   case OO_Coawait:
1453     UnaryOp = UO_Coawait;
1454     return Stmt::UnaryOperatorClass;
1455   }
1456 
1457   llvm_unreachable("Invalid overloaded operator expression");
1458 }
1459 
1460 #if defined(_MSC_VER) && !defined(__clang__)
1461 #if _MSC_VER == 1911
1462 // Work around https://developercommunity.visualstudio.com/content/problem/84002/clang-cl-when-built-with-vc-2017-crashes-cause-vc.html
1463 // MSVC 2017 update 3 miscompiles this function, and a clang built with it
1464 // will crash in stage 2 of a bootstrap build.
1465 #pragma optimize("", off)
1466 #endif
1467 #endif
1468 
1469 void StmtProfiler::VisitCXXOperatorCallExpr(const CXXOperatorCallExpr *S) {
1470   if (S->isTypeDependent()) {
1471     // Type-dependent operator calls are profiled like their underlying
1472     // syntactic operator.
1473     //
1474     // An operator call to operator-> is always implicit, so just skip it. The
1475     // enclosing MemberExpr will profile the actual member access.
1476     if (S->getOperator() == OO_Arrow)
1477       return Visit(S->getArg(0));
1478 
1479     UnaryOperatorKind UnaryOp = UO_Extension;
1480     BinaryOperatorKind BinaryOp = BO_Comma;
1481     Stmt::StmtClass SC = DecodeOperatorCall(S, UnaryOp, BinaryOp);
1482 
1483     ID.AddInteger(SC);
1484     for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
1485       Visit(S->getArg(I));
1486     if (SC == Stmt::UnaryOperatorClass)
1487       ID.AddInteger(UnaryOp);
1488     else if (SC == Stmt::BinaryOperatorClass ||
1489              SC == Stmt::CompoundAssignOperatorClass)
1490       ID.AddInteger(BinaryOp);
1491     else
1492       assert(SC == Stmt::ArraySubscriptExprClass);
1493 
1494     return;
1495   }
1496 
1497   VisitCallExpr(S);
1498   ID.AddInteger(S->getOperator());
1499 }
1500 
1501 #if defined(_MSC_VER) && !defined(__clang__)
1502 #if _MSC_VER == 1911
1503 #pragma optimize("", on)
1504 #endif
1505 #endif
1506 
1507 void StmtProfiler::VisitCXXMemberCallExpr(const CXXMemberCallExpr *S) {
1508   VisitCallExpr(S);
1509 }
1510 
1511 void StmtProfiler::VisitCUDAKernelCallExpr(const CUDAKernelCallExpr *S) {
1512   VisitCallExpr(S);
1513 }
1514 
1515 void StmtProfiler::VisitAsTypeExpr(const AsTypeExpr *S) {
1516   VisitExpr(S);
1517 }
1518 
1519 void StmtProfiler::VisitCXXNamedCastExpr(const CXXNamedCastExpr *S) {
1520   VisitExplicitCastExpr(S);
1521 }
1522 
1523 void StmtProfiler::VisitCXXStaticCastExpr(const CXXStaticCastExpr *S) {
1524   VisitCXXNamedCastExpr(S);
1525 }
1526 
1527 void StmtProfiler::VisitCXXDynamicCastExpr(const CXXDynamicCastExpr *S) {
1528   VisitCXXNamedCastExpr(S);
1529 }
1530 
1531 void
1532 StmtProfiler::VisitCXXReinterpretCastExpr(const CXXReinterpretCastExpr *S) {
1533   VisitCXXNamedCastExpr(S);
1534 }
1535 
1536 void StmtProfiler::VisitCXXConstCastExpr(const CXXConstCastExpr *S) {
1537   VisitCXXNamedCastExpr(S);
1538 }
1539 
1540 void StmtProfiler::VisitUserDefinedLiteral(const UserDefinedLiteral *S) {
1541   VisitCallExpr(S);
1542 }
1543 
1544 void StmtProfiler::VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *S) {
1545   VisitExpr(S);
1546   ID.AddBoolean(S->getValue());
1547 }
1548 
1549 void StmtProfiler::VisitCXXNullPtrLiteralExpr(const CXXNullPtrLiteralExpr *S) {
1550   VisitExpr(S);
1551 }
1552 
1553 void StmtProfiler::VisitCXXStdInitializerListExpr(
1554     const CXXStdInitializerListExpr *S) {
1555   VisitExpr(S);
1556 }
1557 
1558 void StmtProfiler::VisitCXXTypeidExpr(const CXXTypeidExpr *S) {
1559   VisitExpr(S);
1560   if (S->isTypeOperand())
1561     VisitType(S->getTypeOperandSourceInfo()->getType());
1562 }
1563 
1564 void StmtProfiler::VisitCXXUuidofExpr(const CXXUuidofExpr *S) {
1565   VisitExpr(S);
1566   if (S->isTypeOperand())
1567     VisitType(S->getTypeOperandSourceInfo()->getType());
1568 }
1569 
1570 void StmtProfiler::VisitMSPropertyRefExpr(const MSPropertyRefExpr *S) {
1571   VisitExpr(S);
1572   VisitDecl(S->getPropertyDecl());
1573 }
1574 
1575 void StmtProfiler::VisitMSPropertySubscriptExpr(
1576     const MSPropertySubscriptExpr *S) {
1577   VisitExpr(S);
1578 }
1579 
1580 void StmtProfiler::VisitCXXThisExpr(const CXXThisExpr *S) {
1581   VisitExpr(S);
1582   ID.AddBoolean(S->isImplicit());
1583 }
1584 
1585 void StmtProfiler::VisitCXXThrowExpr(const CXXThrowExpr *S) {
1586   VisitExpr(S);
1587 }
1588 
1589 void StmtProfiler::VisitCXXDefaultArgExpr(const CXXDefaultArgExpr *S) {
1590   VisitExpr(S);
1591   VisitDecl(S->getParam());
1592 }
1593 
1594 void StmtProfiler::VisitCXXDefaultInitExpr(const CXXDefaultInitExpr *S) {
1595   VisitExpr(S);
1596   VisitDecl(S->getField());
1597 }
1598 
1599 void StmtProfiler::VisitCXXBindTemporaryExpr(const CXXBindTemporaryExpr *S) {
1600   VisitExpr(S);
1601   VisitDecl(
1602          const_cast<CXXDestructorDecl *>(S->getTemporary()->getDestructor()));
1603 }
1604 
1605 void StmtProfiler::VisitCXXConstructExpr(const CXXConstructExpr *S) {
1606   VisitExpr(S);
1607   VisitDecl(S->getConstructor());
1608   ID.AddBoolean(S->isElidable());
1609 }
1610 
1611 void StmtProfiler::VisitCXXInheritedCtorInitExpr(
1612     const CXXInheritedCtorInitExpr *S) {
1613   VisitExpr(S);
1614   VisitDecl(S->getConstructor());
1615 }
1616 
1617 void StmtProfiler::VisitCXXFunctionalCastExpr(const CXXFunctionalCastExpr *S) {
1618   VisitExplicitCastExpr(S);
1619 }
1620 
1621 void
1622 StmtProfiler::VisitCXXTemporaryObjectExpr(const CXXTemporaryObjectExpr *S) {
1623   VisitCXXConstructExpr(S);
1624 }
1625 
1626 void
1627 StmtProfiler::VisitLambdaExpr(const LambdaExpr *S) {
1628   VisitExpr(S);
1629   for (LambdaExpr::capture_iterator C = S->explicit_capture_begin(),
1630                                  CEnd = S->explicit_capture_end();
1631        C != CEnd; ++C) {
1632     if (C->capturesVLAType())
1633       continue;
1634 
1635     ID.AddInteger(C->getCaptureKind());
1636     switch (C->getCaptureKind()) {
1637     case LCK_StarThis:
1638     case LCK_This:
1639       break;
1640     case LCK_ByRef:
1641     case LCK_ByCopy:
1642       VisitDecl(C->getCapturedVar());
1643       ID.AddBoolean(C->isPackExpansion());
1644       break;
1645     case LCK_VLAType:
1646       llvm_unreachable("VLA type in explicit captures.");
1647     }
1648   }
1649   // Note: If we actually needed to be able to match lambda
1650   // expressions, we would have to consider parameters and return type
1651   // here, among other things.
1652   VisitStmt(S->getBody());
1653 }
1654 
1655 void
1656 StmtProfiler::VisitCXXScalarValueInitExpr(const CXXScalarValueInitExpr *S) {
1657   VisitExpr(S);
1658 }
1659 
1660 void StmtProfiler::VisitCXXDeleteExpr(const CXXDeleteExpr *S) {
1661   VisitExpr(S);
1662   ID.AddBoolean(S->isGlobalDelete());
1663   ID.AddBoolean(S->isArrayForm());
1664   VisitDecl(S->getOperatorDelete());
1665 }
1666 
1667 void StmtProfiler::VisitCXXNewExpr(const CXXNewExpr *S) {
1668   VisitExpr(S);
1669   VisitType(S->getAllocatedType());
1670   VisitDecl(S->getOperatorNew());
1671   VisitDecl(S->getOperatorDelete());
1672   ID.AddBoolean(S->isArray());
1673   ID.AddInteger(S->getNumPlacementArgs());
1674   ID.AddBoolean(S->isGlobalNew());
1675   ID.AddBoolean(S->isParenTypeId());
1676   ID.AddInteger(S->getInitializationStyle());
1677 }
1678 
1679 void
1680 StmtProfiler::VisitCXXPseudoDestructorExpr(const CXXPseudoDestructorExpr *S) {
1681   VisitExpr(S);
1682   ID.AddBoolean(S->isArrow());
1683   VisitNestedNameSpecifier(S->getQualifier());
1684   ID.AddBoolean(S->getScopeTypeInfo() != nullptr);
1685   if (S->getScopeTypeInfo())
1686     VisitType(S->getScopeTypeInfo()->getType());
1687   ID.AddBoolean(S->getDestroyedTypeInfo() != nullptr);
1688   if (S->getDestroyedTypeInfo())
1689     VisitType(S->getDestroyedType());
1690   else
1691     VisitIdentifierInfo(S->getDestroyedTypeIdentifier());
1692 }
1693 
1694 void StmtProfiler::VisitOverloadExpr(const OverloadExpr *S) {
1695   VisitExpr(S);
1696   VisitNestedNameSpecifier(S->getQualifier());
1697   VisitName(S->getName(), /*TreatAsDecl*/ true);
1698   ID.AddBoolean(S->hasExplicitTemplateArgs());
1699   if (S->hasExplicitTemplateArgs())
1700     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1701 }
1702 
1703 void
1704 StmtProfiler::VisitUnresolvedLookupExpr(const UnresolvedLookupExpr *S) {
1705   VisitOverloadExpr(S);
1706 }
1707 
1708 void StmtProfiler::VisitTypeTraitExpr(const TypeTraitExpr *S) {
1709   VisitExpr(S);
1710   ID.AddInteger(S->getTrait());
1711   ID.AddInteger(S->getNumArgs());
1712   for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
1713     VisitType(S->getArg(I)->getType());
1714 }
1715 
1716 void StmtProfiler::VisitArrayTypeTraitExpr(const ArrayTypeTraitExpr *S) {
1717   VisitExpr(S);
1718   ID.AddInteger(S->getTrait());
1719   VisitType(S->getQueriedType());
1720 }
1721 
1722 void StmtProfiler::VisitExpressionTraitExpr(const ExpressionTraitExpr *S) {
1723   VisitExpr(S);
1724   ID.AddInteger(S->getTrait());
1725   VisitExpr(S->getQueriedExpression());
1726 }
1727 
1728 void StmtProfiler::VisitDependentScopeDeclRefExpr(
1729     const DependentScopeDeclRefExpr *S) {
1730   VisitExpr(S);
1731   VisitName(S->getDeclName());
1732   VisitNestedNameSpecifier(S->getQualifier());
1733   ID.AddBoolean(S->hasExplicitTemplateArgs());
1734   if (S->hasExplicitTemplateArgs())
1735     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1736 }
1737 
1738 void StmtProfiler::VisitExprWithCleanups(const ExprWithCleanups *S) {
1739   VisitExpr(S);
1740 }
1741 
1742 void StmtProfiler::VisitCXXUnresolvedConstructExpr(
1743     const CXXUnresolvedConstructExpr *S) {
1744   VisitExpr(S);
1745   VisitType(S->getTypeAsWritten());
1746   ID.AddInteger(S->isListInitialization());
1747 }
1748 
1749 void StmtProfiler::VisitCXXDependentScopeMemberExpr(
1750     const CXXDependentScopeMemberExpr *S) {
1751   ID.AddBoolean(S->isImplicitAccess());
1752   if (!S->isImplicitAccess()) {
1753     VisitExpr(S);
1754     ID.AddBoolean(S->isArrow());
1755   }
1756   VisitNestedNameSpecifier(S->getQualifier());
1757   VisitName(S->getMember());
1758   ID.AddBoolean(S->hasExplicitTemplateArgs());
1759   if (S->hasExplicitTemplateArgs())
1760     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1761 }
1762 
1763 void StmtProfiler::VisitUnresolvedMemberExpr(const UnresolvedMemberExpr *S) {
1764   ID.AddBoolean(S->isImplicitAccess());
1765   if (!S->isImplicitAccess()) {
1766     VisitExpr(S);
1767     ID.AddBoolean(S->isArrow());
1768   }
1769   VisitNestedNameSpecifier(S->getQualifier());
1770   VisitName(S->getMemberName());
1771   ID.AddBoolean(S->hasExplicitTemplateArgs());
1772   if (S->hasExplicitTemplateArgs())
1773     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1774 }
1775 
1776 void StmtProfiler::VisitCXXNoexceptExpr(const CXXNoexceptExpr *S) {
1777   VisitExpr(S);
1778 }
1779 
1780 void StmtProfiler::VisitPackExpansionExpr(const PackExpansionExpr *S) {
1781   VisitExpr(S);
1782 }
1783 
1784 void StmtProfiler::VisitSizeOfPackExpr(const SizeOfPackExpr *S) {
1785   VisitExpr(S);
1786   VisitDecl(S->getPack());
1787   if (S->isPartiallySubstituted()) {
1788     auto Args = S->getPartialArguments();
1789     ID.AddInteger(Args.size());
1790     for (const auto &TA : Args)
1791       VisitTemplateArgument(TA);
1792   } else {
1793     ID.AddInteger(0);
1794   }
1795 }
1796 
1797 void StmtProfiler::VisitSubstNonTypeTemplateParmPackExpr(
1798     const SubstNonTypeTemplateParmPackExpr *S) {
1799   VisitExpr(S);
1800   VisitDecl(S->getParameterPack());
1801   VisitTemplateArgument(S->getArgumentPack());
1802 }
1803 
1804 void StmtProfiler::VisitSubstNonTypeTemplateParmExpr(
1805     const SubstNonTypeTemplateParmExpr *E) {
1806   // Profile exactly as the replacement expression.
1807   Visit(E->getReplacement());
1808 }
1809 
1810 void StmtProfiler::VisitFunctionParmPackExpr(const FunctionParmPackExpr *S) {
1811   VisitExpr(S);
1812   VisitDecl(S->getParameterPack());
1813   ID.AddInteger(S->getNumExpansions());
1814   for (FunctionParmPackExpr::iterator I = S->begin(), E = S->end(); I != E; ++I)
1815     VisitDecl(*I);
1816 }
1817 
1818 void StmtProfiler::VisitMaterializeTemporaryExpr(
1819                                            const MaterializeTemporaryExpr *S) {
1820   VisitExpr(S);
1821 }
1822 
1823 void StmtProfiler::VisitCXXFoldExpr(const CXXFoldExpr *S) {
1824   VisitExpr(S);
1825   ID.AddInteger(S->getOperator());
1826 }
1827 
1828 void StmtProfiler::VisitCoroutineBodyStmt(const CoroutineBodyStmt *S) {
1829   VisitStmt(S);
1830 }
1831 
1832 void StmtProfiler::VisitCoreturnStmt(const CoreturnStmt *S) {
1833   VisitStmt(S);
1834 }
1835 
1836 void StmtProfiler::VisitCoawaitExpr(const CoawaitExpr *S) {
1837   VisitExpr(S);
1838 }
1839 
1840 void StmtProfiler::VisitDependentCoawaitExpr(const DependentCoawaitExpr *S) {
1841   VisitExpr(S);
1842 }
1843 
1844 void StmtProfiler::VisitCoyieldExpr(const CoyieldExpr *S) {
1845   VisitExpr(S);
1846 }
1847 
1848 void StmtProfiler::VisitOpaqueValueExpr(const OpaqueValueExpr *E) {
1849   VisitExpr(E);
1850 }
1851 
1852 void StmtProfiler::VisitTypoExpr(const TypoExpr *E) {
1853   VisitExpr(E);
1854 }
1855 
1856 void StmtProfiler::VisitObjCStringLiteral(const ObjCStringLiteral *S) {
1857   VisitExpr(S);
1858 }
1859 
1860 void StmtProfiler::VisitObjCBoxedExpr(const ObjCBoxedExpr *E) {
1861   VisitExpr(E);
1862 }
1863 
1864 void StmtProfiler::VisitObjCArrayLiteral(const ObjCArrayLiteral *E) {
1865   VisitExpr(E);
1866 }
1867 
1868 void StmtProfiler::VisitObjCDictionaryLiteral(const ObjCDictionaryLiteral *E) {
1869   VisitExpr(E);
1870 }
1871 
1872 void StmtProfiler::VisitObjCEncodeExpr(const ObjCEncodeExpr *S) {
1873   VisitExpr(S);
1874   VisitType(S->getEncodedType());
1875 }
1876 
1877 void StmtProfiler::VisitObjCSelectorExpr(const ObjCSelectorExpr *S) {
1878   VisitExpr(S);
1879   VisitName(S->getSelector());
1880 }
1881 
1882 void StmtProfiler::VisitObjCProtocolExpr(const ObjCProtocolExpr *S) {
1883   VisitExpr(S);
1884   VisitDecl(S->getProtocol());
1885 }
1886 
1887 void StmtProfiler::VisitObjCIvarRefExpr(const ObjCIvarRefExpr *S) {
1888   VisitExpr(S);
1889   VisitDecl(S->getDecl());
1890   ID.AddBoolean(S->isArrow());
1891   ID.AddBoolean(S->isFreeIvar());
1892 }
1893 
1894 void StmtProfiler::VisitObjCPropertyRefExpr(const ObjCPropertyRefExpr *S) {
1895   VisitExpr(S);
1896   if (S->isImplicitProperty()) {
1897     VisitDecl(S->getImplicitPropertyGetter());
1898     VisitDecl(S->getImplicitPropertySetter());
1899   } else {
1900     VisitDecl(S->getExplicitProperty());
1901   }
1902   if (S->isSuperReceiver()) {
1903     ID.AddBoolean(S->isSuperReceiver());
1904     VisitType(S->getSuperReceiverType());
1905   }
1906 }
1907 
1908 void StmtProfiler::VisitObjCSubscriptRefExpr(const ObjCSubscriptRefExpr *S) {
1909   VisitExpr(S);
1910   VisitDecl(S->getAtIndexMethodDecl());
1911   VisitDecl(S->setAtIndexMethodDecl());
1912 }
1913 
1914 void StmtProfiler::VisitObjCMessageExpr(const ObjCMessageExpr *S) {
1915   VisitExpr(S);
1916   VisitName(S->getSelector());
1917   VisitDecl(S->getMethodDecl());
1918 }
1919 
1920 void StmtProfiler::VisitObjCIsaExpr(const ObjCIsaExpr *S) {
1921   VisitExpr(S);
1922   ID.AddBoolean(S->isArrow());
1923 }
1924 
1925 void StmtProfiler::VisitObjCBoolLiteralExpr(const ObjCBoolLiteralExpr *S) {
1926   VisitExpr(S);
1927   ID.AddBoolean(S->getValue());
1928 }
1929 
1930 void StmtProfiler::VisitObjCIndirectCopyRestoreExpr(
1931     const ObjCIndirectCopyRestoreExpr *S) {
1932   VisitExpr(S);
1933   ID.AddBoolean(S->shouldCopy());
1934 }
1935 
1936 void StmtProfiler::VisitObjCBridgedCastExpr(const ObjCBridgedCastExpr *S) {
1937   VisitExplicitCastExpr(S);
1938   ID.AddBoolean(S->getBridgeKind());
1939 }
1940 
1941 void StmtProfiler::VisitObjCAvailabilityCheckExpr(
1942     const ObjCAvailabilityCheckExpr *S) {
1943   VisitExpr(S);
1944 }
1945 
1946 void StmtProfiler::VisitTemplateArguments(const TemplateArgumentLoc *Args,
1947                                           unsigned NumArgs) {
1948   ID.AddInteger(NumArgs);
1949   for (unsigned I = 0; I != NumArgs; ++I)
1950     VisitTemplateArgument(Args[I].getArgument());
1951 }
1952 
1953 void StmtProfiler::VisitTemplateArgument(const TemplateArgument &Arg) {
1954   // Mostly repetitive with TemplateArgument::Profile!
1955   ID.AddInteger(Arg.getKind());
1956   switch (Arg.getKind()) {
1957   case TemplateArgument::Null:
1958     break;
1959 
1960   case TemplateArgument::Type:
1961     VisitType(Arg.getAsType());
1962     break;
1963 
1964   case TemplateArgument::Template:
1965   case TemplateArgument::TemplateExpansion:
1966     VisitTemplateName(Arg.getAsTemplateOrTemplatePattern());
1967     break;
1968 
1969   case TemplateArgument::Declaration:
1970     VisitDecl(Arg.getAsDecl());
1971     break;
1972 
1973   case TemplateArgument::NullPtr:
1974     VisitType(Arg.getNullPtrType());
1975     break;
1976 
1977   case TemplateArgument::Integral:
1978     Arg.getAsIntegral().Profile(ID);
1979     VisitType(Arg.getIntegralType());
1980     break;
1981 
1982   case TemplateArgument::Expression:
1983     Visit(Arg.getAsExpr());
1984     break;
1985 
1986   case TemplateArgument::Pack:
1987     for (const auto &P : Arg.pack_elements())
1988       VisitTemplateArgument(P);
1989     break;
1990   }
1991 }
1992 
1993 void Stmt::Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
1994                    bool Canonical) const {
1995   StmtProfilerWithPointers Profiler(ID, Context, Canonical);
1996   Profiler.Visit(this);
1997 }
1998 
1999 void Stmt::ProcessODRHash(llvm::FoldingSetNodeID &ID,
2000                           class ODRHash &Hash) const {
2001   StmtProfilerWithoutPointers Profiler(ID, Hash);
2002   Profiler.Visit(this);
2003 }
2004