1 //===---- StmtProfile.cpp - Profile implementation for Stmt ASTs ----------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file implements the Stmt::Profile method, which builds a unique bit
11 // representation that identifies a statement/expression.
12 //
13 //===----------------------------------------------------------------------===//
14 #include "clang/AST/ASTContext.h"
15 #include "clang/AST/DeclCXX.h"
16 #include "clang/AST/DeclObjC.h"
17 #include "clang/AST/DeclTemplate.h"
18 #include "clang/AST/Expr.h"
19 #include "clang/AST/ExprCXX.h"
20 #include "clang/AST/ExprObjC.h"
21 #include "clang/AST/ExprOpenMP.h"
22 #include "clang/AST/StmtVisitor.h"
23 #include "llvm/ADT/FoldingSet.h"
24 using namespace clang;
25 
26 namespace {
27   class StmtProfiler : public ConstStmtVisitor<StmtProfiler> {
28     llvm::FoldingSetNodeID &ID;
29     const ASTContext &Context;
30     bool Canonical;
31 
32   public:
33     StmtProfiler(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
34                  bool Canonical)
35       : ID(ID), Context(Context), Canonical(Canonical) { }
36 
37     void VisitStmt(const Stmt *S);
38 
39 #define STMT(Node, Base) void Visit##Node(const Node *S);
40 #include "clang/AST/StmtNodes.inc"
41 
42     /// \brief Visit a declaration that is referenced within an expression
43     /// or statement.
44     void VisitDecl(const Decl *D);
45 
46     /// \brief Visit a type that is referenced within an expression or
47     /// statement.
48     void VisitType(QualType T);
49 
50     /// \brief Visit a name that occurs within an expression or statement.
51     void VisitName(DeclarationName Name);
52 
53     /// \brief Visit a nested-name-specifier that occurs within an expression
54     /// or statement.
55     void VisitNestedNameSpecifier(NestedNameSpecifier *NNS);
56 
57     /// \brief Visit a template name that occurs within an expression or
58     /// statement.
59     void VisitTemplateName(TemplateName Name);
60 
61     /// \brief Visit template arguments that occur within an expression or
62     /// statement.
63     void VisitTemplateArguments(const TemplateArgumentLoc *Args,
64                                 unsigned NumArgs);
65 
66     /// \brief Visit a single template argument.
67     void VisitTemplateArgument(const TemplateArgument &Arg);
68   };
69 }
70 
71 void StmtProfiler::VisitStmt(const Stmt *S) {
72   assert(S && "Requires non-null Stmt pointer");
73   ID.AddInteger(S->getStmtClass());
74   for (const Stmt *SubStmt : S->children()) {
75     if (SubStmt)
76       Visit(SubStmt);
77     else
78       ID.AddInteger(0);
79   }
80 }
81 
82 void StmtProfiler::VisitDeclStmt(const DeclStmt *S) {
83   VisitStmt(S);
84   for (const auto *D : S->decls())
85     VisitDecl(D);
86 }
87 
88 void StmtProfiler::VisitNullStmt(const NullStmt *S) {
89   VisitStmt(S);
90 }
91 
92 void StmtProfiler::VisitCompoundStmt(const CompoundStmt *S) {
93   VisitStmt(S);
94 }
95 
96 void StmtProfiler::VisitSwitchCase(const SwitchCase *S) {
97   VisitStmt(S);
98 }
99 
100 void StmtProfiler::VisitCaseStmt(const CaseStmt *S) {
101   VisitStmt(S);
102 }
103 
104 void StmtProfiler::VisitDefaultStmt(const DefaultStmt *S) {
105   VisitStmt(S);
106 }
107 
108 void StmtProfiler::VisitLabelStmt(const LabelStmt *S) {
109   VisitStmt(S);
110   VisitDecl(S->getDecl());
111 }
112 
113 void StmtProfiler::VisitAttributedStmt(const AttributedStmt *S) {
114   VisitStmt(S);
115   // TODO: maybe visit attributes?
116 }
117 
118 void StmtProfiler::VisitIfStmt(const IfStmt *S) {
119   VisitStmt(S);
120   VisitDecl(S->getConditionVariable());
121 }
122 
123 void StmtProfiler::VisitSwitchStmt(const SwitchStmt *S) {
124   VisitStmt(S);
125   VisitDecl(S->getConditionVariable());
126 }
127 
128 void StmtProfiler::VisitWhileStmt(const WhileStmt *S) {
129   VisitStmt(S);
130   VisitDecl(S->getConditionVariable());
131 }
132 
133 void StmtProfiler::VisitDoStmt(const DoStmt *S) {
134   VisitStmt(S);
135 }
136 
137 void StmtProfiler::VisitForStmt(const ForStmt *S) {
138   VisitStmt(S);
139 }
140 
141 void StmtProfiler::VisitGotoStmt(const GotoStmt *S) {
142   VisitStmt(S);
143   VisitDecl(S->getLabel());
144 }
145 
146 void StmtProfiler::VisitIndirectGotoStmt(const IndirectGotoStmt *S) {
147   VisitStmt(S);
148 }
149 
150 void StmtProfiler::VisitContinueStmt(const ContinueStmt *S) {
151   VisitStmt(S);
152 }
153 
154 void StmtProfiler::VisitBreakStmt(const BreakStmt *S) {
155   VisitStmt(S);
156 }
157 
158 void StmtProfiler::VisitReturnStmt(const ReturnStmt *S) {
159   VisitStmt(S);
160 }
161 
162 void StmtProfiler::VisitGCCAsmStmt(const GCCAsmStmt *S) {
163   VisitStmt(S);
164   ID.AddBoolean(S->isVolatile());
165   ID.AddBoolean(S->isSimple());
166   VisitStringLiteral(S->getAsmString());
167   ID.AddInteger(S->getNumOutputs());
168   for (unsigned I = 0, N = S->getNumOutputs(); I != N; ++I) {
169     ID.AddString(S->getOutputName(I));
170     VisitStringLiteral(S->getOutputConstraintLiteral(I));
171   }
172   ID.AddInteger(S->getNumInputs());
173   for (unsigned I = 0, N = S->getNumInputs(); I != N; ++I) {
174     ID.AddString(S->getInputName(I));
175     VisitStringLiteral(S->getInputConstraintLiteral(I));
176   }
177   ID.AddInteger(S->getNumClobbers());
178   for (unsigned I = 0, N = S->getNumClobbers(); I != N; ++I)
179     VisitStringLiteral(S->getClobberStringLiteral(I));
180 }
181 
182 void StmtProfiler::VisitMSAsmStmt(const MSAsmStmt *S) {
183   // FIXME: Implement MS style inline asm statement profiler.
184   VisitStmt(S);
185 }
186 
187 void StmtProfiler::VisitCXXCatchStmt(const CXXCatchStmt *S) {
188   VisitStmt(S);
189   VisitType(S->getCaughtType());
190 }
191 
192 void StmtProfiler::VisitCXXTryStmt(const CXXTryStmt *S) {
193   VisitStmt(S);
194 }
195 
196 void StmtProfiler::VisitCXXForRangeStmt(const CXXForRangeStmt *S) {
197   VisitStmt(S);
198 }
199 
200 void StmtProfiler::VisitMSDependentExistsStmt(const MSDependentExistsStmt *S) {
201   VisitStmt(S);
202   ID.AddBoolean(S->isIfExists());
203   VisitNestedNameSpecifier(S->getQualifierLoc().getNestedNameSpecifier());
204   VisitName(S->getNameInfo().getName());
205 }
206 
207 void StmtProfiler::VisitSEHTryStmt(const SEHTryStmt *S) {
208   VisitStmt(S);
209 }
210 
211 void StmtProfiler::VisitSEHFinallyStmt(const SEHFinallyStmt *S) {
212   VisitStmt(S);
213 }
214 
215 void StmtProfiler::VisitSEHExceptStmt(const SEHExceptStmt *S) {
216   VisitStmt(S);
217 }
218 
219 void StmtProfiler::VisitSEHLeaveStmt(const SEHLeaveStmt *S) {
220   VisitStmt(S);
221 }
222 
223 void StmtProfiler::VisitCapturedStmt(const CapturedStmt *S) {
224   VisitStmt(S);
225 }
226 
227 void StmtProfiler::VisitObjCForCollectionStmt(const ObjCForCollectionStmt *S) {
228   VisitStmt(S);
229 }
230 
231 void StmtProfiler::VisitObjCAtCatchStmt(const ObjCAtCatchStmt *S) {
232   VisitStmt(S);
233   ID.AddBoolean(S->hasEllipsis());
234   if (S->getCatchParamDecl())
235     VisitType(S->getCatchParamDecl()->getType());
236 }
237 
238 void StmtProfiler::VisitObjCAtFinallyStmt(const ObjCAtFinallyStmt *S) {
239   VisitStmt(S);
240 }
241 
242 void StmtProfiler::VisitObjCAtTryStmt(const ObjCAtTryStmt *S) {
243   VisitStmt(S);
244 }
245 
246 void
247 StmtProfiler::VisitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt *S) {
248   VisitStmt(S);
249 }
250 
251 void StmtProfiler::VisitObjCAtThrowStmt(const ObjCAtThrowStmt *S) {
252   VisitStmt(S);
253 }
254 
255 void
256 StmtProfiler::VisitObjCAutoreleasePoolStmt(const ObjCAutoreleasePoolStmt *S) {
257   VisitStmt(S);
258 }
259 
260 namespace {
261 class OMPClauseProfiler : public ConstOMPClauseVisitor<OMPClauseProfiler> {
262   StmtProfiler *Profiler;
263   /// \brief Process clauses with list of variables.
264   template <typename T>
265   void VisitOMPClauseList(T *Node);
266 
267 public:
268   OMPClauseProfiler(StmtProfiler *P) : Profiler(P) { }
269 #define OPENMP_CLAUSE(Name, Class)                                             \
270   void Visit##Class(const Class *C);
271 #include "clang/Basic/OpenMPKinds.def"
272   void VistOMPClauseWithPreInit(const OMPClauseWithPreInit *C);
273   void VistOMPClauseWithPostUpdate(const OMPClauseWithPostUpdate *C);
274 };
275 
276 void OMPClauseProfiler::VistOMPClauseWithPreInit(
277     const OMPClauseWithPreInit *C) {
278   if (auto *S = C->getPreInitStmt())
279     Profiler->VisitStmt(S);
280 }
281 
282 void OMPClauseProfiler::VistOMPClauseWithPostUpdate(
283     const OMPClauseWithPostUpdate *C) {
284   VistOMPClauseWithPreInit(C);
285   if (auto *E = C->getPostUpdateExpr())
286     Profiler->VisitStmt(E);
287 }
288 
289 void OMPClauseProfiler::VisitOMPIfClause(const OMPIfClause *C) {
290   if (C->getCondition())
291     Profiler->VisitStmt(C->getCondition());
292 }
293 
294 void OMPClauseProfiler::VisitOMPFinalClause(const OMPFinalClause *C) {
295   if (C->getCondition())
296     Profiler->VisitStmt(C->getCondition());
297 }
298 
299 void OMPClauseProfiler::VisitOMPNumThreadsClause(const OMPNumThreadsClause *C) {
300   if (C->getNumThreads())
301     Profiler->VisitStmt(C->getNumThreads());
302 }
303 
304 void OMPClauseProfiler::VisitOMPSafelenClause(const OMPSafelenClause *C) {
305   if (C->getSafelen())
306     Profiler->VisitStmt(C->getSafelen());
307 }
308 
309 void OMPClauseProfiler::VisitOMPSimdlenClause(const OMPSimdlenClause *C) {
310   if (C->getSimdlen())
311     Profiler->VisitStmt(C->getSimdlen());
312 }
313 
314 void OMPClauseProfiler::VisitOMPCollapseClause(const OMPCollapseClause *C) {
315   if (C->getNumForLoops())
316     Profiler->VisitStmt(C->getNumForLoops());
317 }
318 
319 void OMPClauseProfiler::VisitOMPDefaultClause(const OMPDefaultClause *C) { }
320 
321 void OMPClauseProfiler::VisitOMPProcBindClause(const OMPProcBindClause *C) { }
322 
323 void OMPClauseProfiler::VisitOMPScheduleClause(const OMPScheduleClause *C) {
324   VistOMPClauseWithPreInit(C);
325   if (auto *S = C->getChunkSize())
326     Profiler->VisitStmt(S);
327 }
328 
329 void OMPClauseProfiler::VisitOMPOrderedClause(const OMPOrderedClause *C) {
330   if (auto *Num = C->getNumForLoops())
331     Profiler->VisitStmt(Num);
332 }
333 
334 void OMPClauseProfiler::VisitOMPNowaitClause(const OMPNowaitClause *) {}
335 
336 void OMPClauseProfiler::VisitOMPUntiedClause(const OMPUntiedClause *) {}
337 
338 void OMPClauseProfiler::VisitOMPMergeableClause(const OMPMergeableClause *) {}
339 
340 void OMPClauseProfiler::VisitOMPReadClause(const OMPReadClause *) {}
341 
342 void OMPClauseProfiler::VisitOMPWriteClause(const OMPWriteClause *) {}
343 
344 void OMPClauseProfiler::VisitOMPUpdateClause(const OMPUpdateClause *) {}
345 
346 void OMPClauseProfiler::VisitOMPCaptureClause(const OMPCaptureClause *) {}
347 
348 void OMPClauseProfiler::VisitOMPSeqCstClause(const OMPSeqCstClause *) {}
349 
350 void OMPClauseProfiler::VisitOMPThreadsClause(const OMPThreadsClause *) {}
351 
352 void OMPClauseProfiler::VisitOMPSIMDClause(const OMPSIMDClause *) {}
353 
354 void OMPClauseProfiler::VisitOMPNogroupClause(const OMPNogroupClause *) {}
355 
356 template<typename T>
357 void OMPClauseProfiler::VisitOMPClauseList(T *Node) {
358   for (auto *E : Node->varlists()) {
359     if (E)
360       Profiler->VisitStmt(E);
361   }
362 }
363 
364 void OMPClauseProfiler::VisitOMPPrivateClause(const OMPPrivateClause *C) {
365   VisitOMPClauseList(C);
366   for (auto *E : C->private_copies()) {
367     if (E)
368       Profiler->VisitStmt(E);
369   }
370 }
371 void
372 OMPClauseProfiler::VisitOMPFirstprivateClause(const OMPFirstprivateClause *C) {
373   VisitOMPClauseList(C);
374   VistOMPClauseWithPreInit(C);
375   for (auto *E : C->private_copies()) {
376     if (E)
377       Profiler->VisitStmt(E);
378   }
379   for (auto *E : C->inits()) {
380     if (E)
381       Profiler->VisitStmt(E);
382   }
383 }
384 void
385 OMPClauseProfiler::VisitOMPLastprivateClause(const OMPLastprivateClause *C) {
386   VisitOMPClauseList(C);
387   VistOMPClauseWithPostUpdate(C);
388   for (auto *E : C->source_exprs()) {
389     if (E)
390       Profiler->VisitStmt(E);
391   }
392   for (auto *E : C->destination_exprs()) {
393     if (E)
394       Profiler->VisitStmt(E);
395   }
396   for (auto *E : C->assignment_ops()) {
397     if (E)
398       Profiler->VisitStmt(E);
399   }
400 }
401 void OMPClauseProfiler::VisitOMPSharedClause(const OMPSharedClause *C) {
402   VisitOMPClauseList(C);
403 }
404 void OMPClauseProfiler::VisitOMPReductionClause(
405                                          const OMPReductionClause *C) {
406   Profiler->VisitNestedNameSpecifier(
407       C->getQualifierLoc().getNestedNameSpecifier());
408   Profiler->VisitName(C->getNameInfo().getName());
409   VisitOMPClauseList(C);
410   VistOMPClauseWithPostUpdate(C);
411   for (auto *E : C->privates()) {
412     if (E)
413       Profiler->VisitStmt(E);
414   }
415   for (auto *E : C->lhs_exprs()) {
416     if (E)
417       Profiler->VisitStmt(E);
418   }
419   for (auto *E : C->rhs_exprs()) {
420     if (E)
421       Profiler->VisitStmt(E);
422   }
423   for (auto *E : C->reduction_ops()) {
424     if (E)
425       Profiler->VisitStmt(E);
426   }
427 }
428 void OMPClauseProfiler::VisitOMPLinearClause(const OMPLinearClause *C) {
429   VisitOMPClauseList(C);
430   VistOMPClauseWithPostUpdate(C);
431   for (auto *E : C->privates()) {
432     if (E)
433       Profiler->VisitStmt(E);
434   }
435   for (auto *E : C->inits()) {
436     if (E)
437       Profiler->VisitStmt(E);
438   }
439   for (auto *E : C->updates()) {
440     if (E)
441       Profiler->VisitStmt(E);
442   }
443   for (auto *E : C->finals()) {
444     if (E)
445       Profiler->VisitStmt(E);
446   }
447   if (C->getStep())
448     Profiler->VisitStmt(C->getStep());
449   if (C->getCalcStep())
450     Profiler->VisitStmt(C->getCalcStep());
451 }
452 void OMPClauseProfiler::VisitOMPAlignedClause(const OMPAlignedClause *C) {
453   VisitOMPClauseList(C);
454   if (C->getAlignment())
455     Profiler->VisitStmt(C->getAlignment());
456 }
457 void OMPClauseProfiler::VisitOMPCopyinClause(const OMPCopyinClause *C) {
458   VisitOMPClauseList(C);
459   for (auto *E : C->source_exprs()) {
460     if (E)
461       Profiler->VisitStmt(E);
462   }
463   for (auto *E : C->destination_exprs()) {
464     if (E)
465       Profiler->VisitStmt(E);
466   }
467   for (auto *E : C->assignment_ops()) {
468     if (E)
469       Profiler->VisitStmt(E);
470   }
471 }
472 void
473 OMPClauseProfiler::VisitOMPCopyprivateClause(const OMPCopyprivateClause *C) {
474   VisitOMPClauseList(C);
475   for (auto *E : C->source_exprs()) {
476     if (E)
477       Profiler->VisitStmt(E);
478   }
479   for (auto *E : C->destination_exprs()) {
480     if (E)
481       Profiler->VisitStmt(E);
482   }
483   for (auto *E : C->assignment_ops()) {
484     if (E)
485       Profiler->VisitStmt(E);
486   }
487 }
488 void OMPClauseProfiler::VisitOMPFlushClause(const OMPFlushClause *C) {
489   VisitOMPClauseList(C);
490 }
491 void OMPClauseProfiler::VisitOMPDependClause(const OMPDependClause *C) {
492   VisitOMPClauseList(C);
493 }
494 void OMPClauseProfiler::VisitOMPDeviceClause(const OMPDeviceClause *C) {
495   if (C->getDevice())
496     Profiler->VisitStmt(C->getDevice());
497 }
498 void OMPClauseProfiler::VisitOMPMapClause(const OMPMapClause *C) {
499   VisitOMPClauseList(C);
500 }
501 void OMPClauseProfiler::VisitOMPNumTeamsClause(const OMPNumTeamsClause *C) {
502   if (C->getNumTeams())
503     Profiler->VisitStmt(C->getNumTeams());
504 }
505 void OMPClauseProfiler::VisitOMPThreadLimitClause(
506     const OMPThreadLimitClause *C) {
507   if (C->getThreadLimit())
508     Profiler->VisitStmt(C->getThreadLimit());
509 }
510 void OMPClauseProfiler::VisitOMPPriorityClause(const OMPPriorityClause *C) {
511   if (C->getPriority())
512     Profiler->VisitStmt(C->getPriority());
513 }
514 void OMPClauseProfiler::VisitOMPGrainsizeClause(const OMPGrainsizeClause *C) {
515   if (C->getGrainsize())
516     Profiler->VisitStmt(C->getGrainsize());
517 }
518 void OMPClauseProfiler::VisitOMPNumTasksClause(const OMPNumTasksClause *C) {
519   if (C->getNumTasks())
520     Profiler->VisitStmt(C->getNumTasks());
521 }
522 void OMPClauseProfiler::VisitOMPHintClause(const OMPHintClause *C) {
523   if (C->getHint())
524     Profiler->VisitStmt(C->getHint());
525 }
526 void OMPClauseProfiler::VisitOMPToClause(const OMPToClause *C) {
527   VisitOMPClauseList(C);
528 }
529 void OMPClauseProfiler::VisitOMPFromClause(const OMPFromClause *C) {
530   VisitOMPClauseList(C);
531 }
532 }
533 
534 void
535 StmtProfiler::VisitOMPExecutableDirective(const OMPExecutableDirective *S) {
536   VisitStmt(S);
537   OMPClauseProfiler P(this);
538   ArrayRef<OMPClause *> Clauses = S->clauses();
539   for (ArrayRef<OMPClause *>::iterator I = Clauses.begin(), E = Clauses.end();
540        I != E; ++I)
541     if (*I)
542       P.Visit(*I);
543 }
544 
545 void StmtProfiler::VisitOMPLoopDirective(const OMPLoopDirective *S) {
546   VisitOMPExecutableDirective(S);
547 }
548 
549 void StmtProfiler::VisitOMPParallelDirective(const OMPParallelDirective *S) {
550   VisitOMPExecutableDirective(S);
551 }
552 
553 void StmtProfiler::VisitOMPSimdDirective(const OMPSimdDirective *S) {
554   VisitOMPLoopDirective(S);
555 }
556 
557 void StmtProfiler::VisitOMPForDirective(const OMPForDirective *S) {
558   VisitOMPLoopDirective(S);
559 }
560 
561 void StmtProfiler::VisitOMPForSimdDirective(const OMPForSimdDirective *S) {
562   VisitOMPLoopDirective(S);
563 }
564 
565 void StmtProfiler::VisitOMPSectionsDirective(const OMPSectionsDirective *S) {
566   VisitOMPExecutableDirective(S);
567 }
568 
569 void StmtProfiler::VisitOMPSectionDirective(const OMPSectionDirective *S) {
570   VisitOMPExecutableDirective(S);
571 }
572 
573 void StmtProfiler::VisitOMPSingleDirective(const OMPSingleDirective *S) {
574   VisitOMPExecutableDirective(S);
575 }
576 
577 void StmtProfiler::VisitOMPMasterDirective(const OMPMasterDirective *S) {
578   VisitOMPExecutableDirective(S);
579 }
580 
581 void StmtProfiler::VisitOMPCriticalDirective(const OMPCriticalDirective *S) {
582   VisitOMPExecutableDirective(S);
583   VisitName(S->getDirectiveName().getName());
584 }
585 
586 void
587 StmtProfiler::VisitOMPParallelForDirective(const OMPParallelForDirective *S) {
588   VisitOMPLoopDirective(S);
589 }
590 
591 void StmtProfiler::VisitOMPParallelForSimdDirective(
592     const OMPParallelForSimdDirective *S) {
593   VisitOMPLoopDirective(S);
594 }
595 
596 void StmtProfiler::VisitOMPParallelSectionsDirective(
597     const OMPParallelSectionsDirective *S) {
598   VisitOMPExecutableDirective(S);
599 }
600 
601 void StmtProfiler::VisitOMPTaskDirective(const OMPTaskDirective *S) {
602   VisitOMPExecutableDirective(S);
603 }
604 
605 void StmtProfiler::VisitOMPTaskyieldDirective(const OMPTaskyieldDirective *S) {
606   VisitOMPExecutableDirective(S);
607 }
608 
609 void StmtProfiler::VisitOMPBarrierDirective(const OMPBarrierDirective *S) {
610   VisitOMPExecutableDirective(S);
611 }
612 
613 void StmtProfiler::VisitOMPTaskwaitDirective(const OMPTaskwaitDirective *S) {
614   VisitOMPExecutableDirective(S);
615 }
616 
617 void StmtProfiler::VisitOMPTaskgroupDirective(const OMPTaskgroupDirective *S) {
618   VisitOMPExecutableDirective(S);
619 }
620 
621 void StmtProfiler::VisitOMPFlushDirective(const OMPFlushDirective *S) {
622   VisitOMPExecutableDirective(S);
623 }
624 
625 void StmtProfiler::VisitOMPOrderedDirective(const OMPOrderedDirective *S) {
626   VisitOMPExecutableDirective(S);
627 }
628 
629 void StmtProfiler::VisitOMPAtomicDirective(const OMPAtomicDirective *S) {
630   VisitOMPExecutableDirective(S);
631 }
632 
633 void StmtProfiler::VisitOMPTargetDirective(const OMPTargetDirective *S) {
634   VisitOMPExecutableDirective(S);
635 }
636 
637 void StmtProfiler::VisitOMPTargetDataDirective(const OMPTargetDataDirective *S) {
638   VisitOMPExecutableDirective(S);
639 }
640 
641 void StmtProfiler::VisitOMPTargetEnterDataDirective(
642     const OMPTargetEnterDataDirective *S) {
643   VisitOMPExecutableDirective(S);
644 }
645 
646 void StmtProfiler::VisitOMPTargetExitDataDirective(
647     const OMPTargetExitDataDirective *S) {
648   VisitOMPExecutableDirective(S);
649 }
650 
651 void StmtProfiler::VisitOMPTargetParallelDirective(
652     const OMPTargetParallelDirective *S) {
653   VisitOMPExecutableDirective(S);
654 }
655 
656 void StmtProfiler::VisitOMPTargetParallelForDirective(
657     const OMPTargetParallelForDirective *S) {
658   VisitOMPExecutableDirective(S);
659 }
660 
661 void StmtProfiler::VisitOMPTeamsDirective(const OMPTeamsDirective *S) {
662   VisitOMPExecutableDirective(S);
663 }
664 
665 void StmtProfiler::VisitOMPCancellationPointDirective(
666     const OMPCancellationPointDirective *S) {
667   VisitOMPExecutableDirective(S);
668 }
669 
670 void StmtProfiler::VisitOMPCancelDirective(const OMPCancelDirective *S) {
671   VisitOMPExecutableDirective(S);
672 }
673 
674 void StmtProfiler::VisitOMPTaskLoopDirective(const OMPTaskLoopDirective *S) {
675   VisitOMPLoopDirective(S);
676 }
677 
678 void StmtProfiler::VisitOMPTaskLoopSimdDirective(
679     const OMPTaskLoopSimdDirective *S) {
680   VisitOMPLoopDirective(S);
681 }
682 
683 void StmtProfiler::VisitOMPDistributeDirective(
684     const OMPDistributeDirective *S) {
685   VisitOMPLoopDirective(S);
686 }
687 
688 void OMPClauseProfiler::VisitOMPDistScheduleClause(
689     const OMPDistScheduleClause *C) {
690   VistOMPClauseWithPreInit(C);
691   if (auto *S = C->getChunkSize())
692     Profiler->VisitStmt(S);
693 }
694 
695 void OMPClauseProfiler::VisitOMPDefaultmapClause(const OMPDefaultmapClause *) {}
696 
697 void StmtProfiler::VisitOMPTargetUpdateDirective(
698     const OMPTargetUpdateDirective *S) {
699   VisitOMPExecutableDirective(S);
700 }
701 
702 void StmtProfiler::VisitExpr(const Expr *S) {
703   VisitStmt(S);
704 }
705 
706 void StmtProfiler::VisitDeclRefExpr(const DeclRefExpr *S) {
707   VisitExpr(S);
708   if (!Canonical)
709     VisitNestedNameSpecifier(S->getQualifier());
710   VisitDecl(S->getDecl());
711   if (!Canonical)
712     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
713 }
714 
715 void StmtProfiler::VisitPredefinedExpr(const PredefinedExpr *S) {
716   VisitExpr(S);
717   ID.AddInteger(S->getIdentType());
718 }
719 
720 void StmtProfiler::VisitIntegerLiteral(const IntegerLiteral *S) {
721   VisitExpr(S);
722   S->getValue().Profile(ID);
723   ID.AddInteger(S->getType()->castAs<BuiltinType>()->getKind());
724 }
725 
726 void StmtProfiler::VisitCharacterLiteral(const CharacterLiteral *S) {
727   VisitExpr(S);
728   ID.AddInteger(S->getKind());
729   ID.AddInteger(S->getValue());
730 }
731 
732 void StmtProfiler::VisitFloatingLiteral(const FloatingLiteral *S) {
733   VisitExpr(S);
734   S->getValue().Profile(ID);
735   ID.AddBoolean(S->isExact());
736   ID.AddInteger(S->getType()->castAs<BuiltinType>()->getKind());
737 }
738 
739 void StmtProfiler::VisitImaginaryLiteral(const ImaginaryLiteral *S) {
740   VisitExpr(S);
741 }
742 
743 void StmtProfiler::VisitStringLiteral(const StringLiteral *S) {
744   VisitExpr(S);
745   ID.AddString(S->getBytes());
746   ID.AddInteger(S->getKind());
747 }
748 
749 void StmtProfiler::VisitParenExpr(const ParenExpr *S) {
750   VisitExpr(S);
751 }
752 
753 void StmtProfiler::VisitParenListExpr(const ParenListExpr *S) {
754   VisitExpr(S);
755 }
756 
757 void StmtProfiler::VisitUnaryOperator(const UnaryOperator *S) {
758   VisitExpr(S);
759   ID.AddInteger(S->getOpcode());
760 }
761 
762 void StmtProfiler::VisitOffsetOfExpr(const OffsetOfExpr *S) {
763   VisitType(S->getTypeSourceInfo()->getType());
764   unsigned n = S->getNumComponents();
765   for (unsigned i = 0; i < n; ++i) {
766     const OffsetOfNode &ON = S->getComponent(i);
767     ID.AddInteger(ON.getKind());
768     switch (ON.getKind()) {
769     case OffsetOfNode::Array:
770       // Expressions handled below.
771       break;
772 
773     case OffsetOfNode::Field:
774       VisitDecl(ON.getField());
775       break;
776 
777     case OffsetOfNode::Identifier:
778       ID.AddPointer(ON.getFieldName());
779       break;
780 
781     case OffsetOfNode::Base:
782       // These nodes are implicit, and therefore don't need profiling.
783       break;
784     }
785   }
786 
787   VisitExpr(S);
788 }
789 
790 void
791 StmtProfiler::VisitUnaryExprOrTypeTraitExpr(const UnaryExprOrTypeTraitExpr *S) {
792   VisitExpr(S);
793   ID.AddInteger(S->getKind());
794   if (S->isArgumentType())
795     VisitType(S->getArgumentType());
796 }
797 
798 void StmtProfiler::VisitArraySubscriptExpr(const ArraySubscriptExpr *S) {
799   VisitExpr(S);
800 }
801 
802 void StmtProfiler::VisitOMPArraySectionExpr(const OMPArraySectionExpr *S) {
803   VisitExpr(S);
804 }
805 
806 void StmtProfiler::VisitCallExpr(const CallExpr *S) {
807   VisitExpr(S);
808 }
809 
810 void StmtProfiler::VisitMemberExpr(const MemberExpr *S) {
811   VisitExpr(S);
812   VisitDecl(S->getMemberDecl());
813   if (!Canonical)
814     VisitNestedNameSpecifier(S->getQualifier());
815   ID.AddBoolean(S->isArrow());
816 }
817 
818 void StmtProfiler::VisitCompoundLiteralExpr(const CompoundLiteralExpr *S) {
819   VisitExpr(S);
820   ID.AddBoolean(S->isFileScope());
821 }
822 
823 void StmtProfiler::VisitCastExpr(const CastExpr *S) {
824   VisitExpr(S);
825 }
826 
827 void StmtProfiler::VisitImplicitCastExpr(const ImplicitCastExpr *S) {
828   VisitCastExpr(S);
829   ID.AddInteger(S->getValueKind());
830 }
831 
832 void StmtProfiler::VisitExplicitCastExpr(const ExplicitCastExpr *S) {
833   VisitCastExpr(S);
834   VisitType(S->getTypeAsWritten());
835 }
836 
837 void StmtProfiler::VisitCStyleCastExpr(const CStyleCastExpr *S) {
838   VisitExplicitCastExpr(S);
839 }
840 
841 void StmtProfiler::VisitBinaryOperator(const BinaryOperator *S) {
842   VisitExpr(S);
843   ID.AddInteger(S->getOpcode());
844 }
845 
846 void
847 StmtProfiler::VisitCompoundAssignOperator(const CompoundAssignOperator *S) {
848   VisitBinaryOperator(S);
849 }
850 
851 void StmtProfiler::VisitConditionalOperator(const ConditionalOperator *S) {
852   VisitExpr(S);
853 }
854 
855 void StmtProfiler::VisitBinaryConditionalOperator(
856     const BinaryConditionalOperator *S) {
857   VisitExpr(S);
858 }
859 
860 void StmtProfiler::VisitAddrLabelExpr(const AddrLabelExpr *S) {
861   VisitExpr(S);
862   VisitDecl(S->getLabel());
863 }
864 
865 void StmtProfiler::VisitStmtExpr(const StmtExpr *S) {
866   VisitExpr(S);
867 }
868 
869 void StmtProfiler::VisitShuffleVectorExpr(const ShuffleVectorExpr *S) {
870   VisitExpr(S);
871 }
872 
873 void StmtProfiler::VisitConvertVectorExpr(const ConvertVectorExpr *S) {
874   VisitExpr(S);
875 }
876 
877 void StmtProfiler::VisitChooseExpr(const ChooseExpr *S) {
878   VisitExpr(S);
879 }
880 
881 void StmtProfiler::VisitGNUNullExpr(const GNUNullExpr *S) {
882   VisitExpr(S);
883 }
884 
885 void StmtProfiler::VisitVAArgExpr(const VAArgExpr *S) {
886   VisitExpr(S);
887 }
888 
889 void StmtProfiler::VisitInitListExpr(const InitListExpr *S) {
890   if (S->getSyntacticForm()) {
891     VisitInitListExpr(S->getSyntacticForm());
892     return;
893   }
894 
895   VisitExpr(S);
896 }
897 
898 void StmtProfiler::VisitDesignatedInitExpr(const DesignatedInitExpr *S) {
899   VisitExpr(S);
900   ID.AddBoolean(S->usesGNUSyntax());
901   for (DesignatedInitExpr::const_designators_iterator D =
902          S->designators_begin(), DEnd = S->designators_end();
903        D != DEnd; ++D) {
904     if (D->isFieldDesignator()) {
905       ID.AddInteger(0);
906       VisitName(D->getFieldName());
907       continue;
908     }
909 
910     if (D->isArrayDesignator()) {
911       ID.AddInteger(1);
912     } else {
913       assert(D->isArrayRangeDesignator());
914       ID.AddInteger(2);
915     }
916     ID.AddInteger(D->getFirstExprIndex());
917   }
918 }
919 
920 // Seems that if VisitInitListExpr() only works on the syntactic form of an
921 // InitListExpr, then a DesignatedInitUpdateExpr is not encountered.
922 void StmtProfiler::VisitDesignatedInitUpdateExpr(
923     const DesignatedInitUpdateExpr *S) {
924   llvm_unreachable("Unexpected DesignatedInitUpdateExpr in syntactic form of "
925                    "initializer");
926 }
927 
928 void StmtProfiler::VisitNoInitExpr(const NoInitExpr *S) {
929   llvm_unreachable("Unexpected NoInitExpr in syntactic form of initializer");
930 }
931 
932 void StmtProfiler::VisitImplicitValueInitExpr(const ImplicitValueInitExpr *S) {
933   VisitExpr(S);
934 }
935 
936 void StmtProfiler::VisitExtVectorElementExpr(const ExtVectorElementExpr *S) {
937   VisitExpr(S);
938   VisitName(&S->getAccessor());
939 }
940 
941 void StmtProfiler::VisitBlockExpr(const BlockExpr *S) {
942   VisitExpr(S);
943   VisitDecl(S->getBlockDecl());
944 }
945 
946 void StmtProfiler::VisitGenericSelectionExpr(const GenericSelectionExpr *S) {
947   VisitExpr(S);
948   for (unsigned i = 0; i != S->getNumAssocs(); ++i) {
949     QualType T = S->getAssocType(i);
950     if (T.isNull())
951       ID.AddPointer(nullptr);
952     else
953       VisitType(T);
954     VisitExpr(S->getAssocExpr(i));
955   }
956 }
957 
958 void StmtProfiler::VisitPseudoObjectExpr(const PseudoObjectExpr *S) {
959   VisitExpr(S);
960   for (PseudoObjectExpr::const_semantics_iterator
961          i = S->semantics_begin(), e = S->semantics_end(); i != e; ++i)
962     // Normally, we would not profile the source expressions of OVEs.
963     if (const OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(*i))
964       Visit(OVE->getSourceExpr());
965 }
966 
967 void StmtProfiler::VisitAtomicExpr(const AtomicExpr *S) {
968   VisitExpr(S);
969   ID.AddInteger(S->getOp());
970 }
971 
972 static Stmt::StmtClass DecodeOperatorCall(const CXXOperatorCallExpr *S,
973                                           UnaryOperatorKind &UnaryOp,
974                                           BinaryOperatorKind &BinaryOp) {
975   switch (S->getOperator()) {
976   case OO_None:
977   case OO_New:
978   case OO_Delete:
979   case OO_Array_New:
980   case OO_Array_Delete:
981   case OO_Arrow:
982   case OO_Call:
983   case OO_Conditional:
984   case OO_Coawait:
985   case NUM_OVERLOADED_OPERATORS:
986     llvm_unreachable("Invalid operator call kind");
987 
988   case OO_Plus:
989     if (S->getNumArgs() == 1) {
990       UnaryOp = UO_Plus;
991       return Stmt::UnaryOperatorClass;
992     }
993 
994     BinaryOp = BO_Add;
995     return Stmt::BinaryOperatorClass;
996 
997   case OO_Minus:
998     if (S->getNumArgs() == 1) {
999       UnaryOp = UO_Minus;
1000       return Stmt::UnaryOperatorClass;
1001     }
1002 
1003     BinaryOp = BO_Sub;
1004     return Stmt::BinaryOperatorClass;
1005 
1006   case OO_Star:
1007     if (S->getNumArgs() == 1) {
1008       UnaryOp = UO_Deref;
1009       return Stmt::UnaryOperatorClass;
1010     }
1011 
1012     BinaryOp = BO_Mul;
1013     return Stmt::BinaryOperatorClass;
1014 
1015   case OO_Slash:
1016     BinaryOp = BO_Div;
1017     return Stmt::BinaryOperatorClass;
1018 
1019   case OO_Percent:
1020     BinaryOp = BO_Rem;
1021     return Stmt::BinaryOperatorClass;
1022 
1023   case OO_Caret:
1024     BinaryOp = BO_Xor;
1025     return Stmt::BinaryOperatorClass;
1026 
1027   case OO_Amp:
1028     if (S->getNumArgs() == 1) {
1029       UnaryOp = UO_AddrOf;
1030       return Stmt::UnaryOperatorClass;
1031     }
1032 
1033     BinaryOp = BO_And;
1034     return Stmt::BinaryOperatorClass;
1035 
1036   case OO_Pipe:
1037     BinaryOp = BO_Or;
1038     return Stmt::BinaryOperatorClass;
1039 
1040   case OO_Tilde:
1041     UnaryOp = UO_Not;
1042     return Stmt::UnaryOperatorClass;
1043 
1044   case OO_Exclaim:
1045     UnaryOp = UO_LNot;
1046     return Stmt::UnaryOperatorClass;
1047 
1048   case OO_Equal:
1049     BinaryOp = BO_Assign;
1050     return Stmt::BinaryOperatorClass;
1051 
1052   case OO_Less:
1053     BinaryOp = BO_LT;
1054     return Stmt::BinaryOperatorClass;
1055 
1056   case OO_Greater:
1057     BinaryOp = BO_GT;
1058     return Stmt::BinaryOperatorClass;
1059 
1060   case OO_PlusEqual:
1061     BinaryOp = BO_AddAssign;
1062     return Stmt::CompoundAssignOperatorClass;
1063 
1064   case OO_MinusEqual:
1065     BinaryOp = BO_SubAssign;
1066     return Stmt::CompoundAssignOperatorClass;
1067 
1068   case OO_StarEqual:
1069     BinaryOp = BO_MulAssign;
1070     return Stmt::CompoundAssignOperatorClass;
1071 
1072   case OO_SlashEqual:
1073     BinaryOp = BO_DivAssign;
1074     return Stmt::CompoundAssignOperatorClass;
1075 
1076   case OO_PercentEqual:
1077     BinaryOp = BO_RemAssign;
1078     return Stmt::CompoundAssignOperatorClass;
1079 
1080   case OO_CaretEqual:
1081     BinaryOp = BO_XorAssign;
1082     return Stmt::CompoundAssignOperatorClass;
1083 
1084   case OO_AmpEqual:
1085     BinaryOp = BO_AndAssign;
1086     return Stmt::CompoundAssignOperatorClass;
1087 
1088   case OO_PipeEqual:
1089     BinaryOp = BO_OrAssign;
1090     return Stmt::CompoundAssignOperatorClass;
1091 
1092   case OO_LessLess:
1093     BinaryOp = BO_Shl;
1094     return Stmt::BinaryOperatorClass;
1095 
1096   case OO_GreaterGreater:
1097     BinaryOp = BO_Shr;
1098     return Stmt::BinaryOperatorClass;
1099 
1100   case OO_LessLessEqual:
1101     BinaryOp = BO_ShlAssign;
1102     return Stmt::CompoundAssignOperatorClass;
1103 
1104   case OO_GreaterGreaterEqual:
1105     BinaryOp = BO_ShrAssign;
1106     return Stmt::CompoundAssignOperatorClass;
1107 
1108   case OO_EqualEqual:
1109     BinaryOp = BO_EQ;
1110     return Stmt::BinaryOperatorClass;
1111 
1112   case OO_ExclaimEqual:
1113     BinaryOp = BO_NE;
1114     return Stmt::BinaryOperatorClass;
1115 
1116   case OO_LessEqual:
1117     BinaryOp = BO_LE;
1118     return Stmt::BinaryOperatorClass;
1119 
1120   case OO_GreaterEqual:
1121     BinaryOp = BO_GE;
1122     return Stmt::BinaryOperatorClass;
1123 
1124   case OO_AmpAmp:
1125     BinaryOp = BO_LAnd;
1126     return Stmt::BinaryOperatorClass;
1127 
1128   case OO_PipePipe:
1129     BinaryOp = BO_LOr;
1130     return Stmt::BinaryOperatorClass;
1131 
1132   case OO_PlusPlus:
1133     UnaryOp = S->getNumArgs() == 1? UO_PreInc
1134                                   : UO_PostInc;
1135     return Stmt::UnaryOperatorClass;
1136 
1137   case OO_MinusMinus:
1138     UnaryOp = S->getNumArgs() == 1? UO_PreDec
1139                                   : UO_PostDec;
1140     return Stmt::UnaryOperatorClass;
1141 
1142   case OO_Comma:
1143     BinaryOp = BO_Comma;
1144     return Stmt::BinaryOperatorClass;
1145 
1146   case OO_ArrowStar:
1147     BinaryOp = BO_PtrMemI;
1148     return Stmt::BinaryOperatorClass;
1149 
1150   case OO_Subscript:
1151     return Stmt::ArraySubscriptExprClass;
1152   }
1153 
1154   llvm_unreachable("Invalid overloaded operator expression");
1155 }
1156 
1157 void StmtProfiler::VisitCXXOperatorCallExpr(const CXXOperatorCallExpr *S) {
1158   if (S->isTypeDependent()) {
1159     // Type-dependent operator calls are profiled like their underlying
1160     // syntactic operator.
1161     UnaryOperatorKind UnaryOp = UO_Extension;
1162     BinaryOperatorKind BinaryOp = BO_Comma;
1163     Stmt::StmtClass SC = DecodeOperatorCall(S, UnaryOp, BinaryOp);
1164 
1165     ID.AddInteger(SC);
1166     for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
1167       Visit(S->getArg(I));
1168     if (SC == Stmt::UnaryOperatorClass)
1169       ID.AddInteger(UnaryOp);
1170     else if (SC == Stmt::BinaryOperatorClass ||
1171              SC == Stmt::CompoundAssignOperatorClass)
1172       ID.AddInteger(BinaryOp);
1173     else
1174       assert(SC == Stmt::ArraySubscriptExprClass);
1175 
1176     return;
1177   }
1178 
1179   VisitCallExpr(S);
1180   ID.AddInteger(S->getOperator());
1181 }
1182 
1183 void StmtProfiler::VisitCXXMemberCallExpr(const CXXMemberCallExpr *S) {
1184   VisitCallExpr(S);
1185 }
1186 
1187 void StmtProfiler::VisitCUDAKernelCallExpr(const CUDAKernelCallExpr *S) {
1188   VisitCallExpr(S);
1189 }
1190 
1191 void StmtProfiler::VisitAsTypeExpr(const AsTypeExpr *S) {
1192   VisitExpr(S);
1193 }
1194 
1195 void StmtProfiler::VisitCXXNamedCastExpr(const CXXNamedCastExpr *S) {
1196   VisitExplicitCastExpr(S);
1197 }
1198 
1199 void StmtProfiler::VisitCXXStaticCastExpr(const CXXStaticCastExpr *S) {
1200   VisitCXXNamedCastExpr(S);
1201 }
1202 
1203 void StmtProfiler::VisitCXXDynamicCastExpr(const CXXDynamicCastExpr *S) {
1204   VisitCXXNamedCastExpr(S);
1205 }
1206 
1207 void
1208 StmtProfiler::VisitCXXReinterpretCastExpr(const CXXReinterpretCastExpr *S) {
1209   VisitCXXNamedCastExpr(S);
1210 }
1211 
1212 void StmtProfiler::VisitCXXConstCastExpr(const CXXConstCastExpr *S) {
1213   VisitCXXNamedCastExpr(S);
1214 }
1215 
1216 void StmtProfiler::VisitUserDefinedLiteral(const UserDefinedLiteral *S) {
1217   VisitCallExpr(S);
1218 }
1219 
1220 void StmtProfiler::VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *S) {
1221   VisitExpr(S);
1222   ID.AddBoolean(S->getValue());
1223 }
1224 
1225 void StmtProfiler::VisitCXXNullPtrLiteralExpr(const CXXNullPtrLiteralExpr *S) {
1226   VisitExpr(S);
1227 }
1228 
1229 void StmtProfiler::VisitCXXStdInitializerListExpr(
1230     const CXXStdInitializerListExpr *S) {
1231   VisitExpr(S);
1232 }
1233 
1234 void StmtProfiler::VisitCXXTypeidExpr(const CXXTypeidExpr *S) {
1235   VisitExpr(S);
1236   if (S->isTypeOperand())
1237     VisitType(S->getTypeOperandSourceInfo()->getType());
1238 }
1239 
1240 void StmtProfiler::VisitCXXUuidofExpr(const CXXUuidofExpr *S) {
1241   VisitExpr(S);
1242   if (S->isTypeOperand())
1243     VisitType(S->getTypeOperandSourceInfo()->getType());
1244 }
1245 
1246 void StmtProfiler::VisitMSPropertyRefExpr(const MSPropertyRefExpr *S) {
1247   VisitExpr(S);
1248   VisitDecl(S->getPropertyDecl());
1249 }
1250 
1251 void StmtProfiler::VisitMSPropertySubscriptExpr(
1252     const MSPropertySubscriptExpr *S) {
1253   VisitExpr(S);
1254 }
1255 
1256 void StmtProfiler::VisitCXXThisExpr(const CXXThisExpr *S) {
1257   VisitExpr(S);
1258   ID.AddBoolean(S->isImplicit());
1259 }
1260 
1261 void StmtProfiler::VisitCXXThrowExpr(const CXXThrowExpr *S) {
1262   VisitExpr(S);
1263 }
1264 
1265 void StmtProfiler::VisitCXXDefaultArgExpr(const CXXDefaultArgExpr *S) {
1266   VisitExpr(S);
1267   VisitDecl(S->getParam());
1268 }
1269 
1270 void StmtProfiler::VisitCXXDefaultInitExpr(const CXXDefaultInitExpr *S) {
1271   VisitExpr(S);
1272   VisitDecl(S->getField());
1273 }
1274 
1275 void StmtProfiler::VisitCXXBindTemporaryExpr(const CXXBindTemporaryExpr *S) {
1276   VisitExpr(S);
1277   VisitDecl(
1278          const_cast<CXXDestructorDecl *>(S->getTemporary()->getDestructor()));
1279 }
1280 
1281 void StmtProfiler::VisitCXXConstructExpr(const CXXConstructExpr *S) {
1282   VisitExpr(S);
1283   VisitDecl(S->getConstructor());
1284   ID.AddBoolean(S->isElidable());
1285 }
1286 
1287 void StmtProfiler::VisitCXXFunctionalCastExpr(const CXXFunctionalCastExpr *S) {
1288   VisitExplicitCastExpr(S);
1289 }
1290 
1291 void
1292 StmtProfiler::VisitCXXTemporaryObjectExpr(const CXXTemporaryObjectExpr *S) {
1293   VisitCXXConstructExpr(S);
1294 }
1295 
1296 void
1297 StmtProfiler::VisitLambdaExpr(const LambdaExpr *S) {
1298   VisitExpr(S);
1299   for (LambdaExpr::capture_iterator C = S->explicit_capture_begin(),
1300                                  CEnd = S->explicit_capture_end();
1301        C != CEnd; ++C) {
1302     ID.AddInteger(C->getCaptureKind());
1303     switch (C->getCaptureKind()) {
1304     case LCK_StarThis:
1305     case LCK_This:
1306       break;
1307     case LCK_ByRef:
1308     case LCK_ByCopy:
1309       VisitDecl(C->getCapturedVar());
1310       ID.AddBoolean(C->isPackExpansion());
1311       break;
1312     case LCK_VLAType:
1313       llvm_unreachable("VLA type in explicit captures.");
1314     }
1315   }
1316   // Note: If we actually needed to be able to match lambda
1317   // expressions, we would have to consider parameters and return type
1318   // here, among other things.
1319   VisitStmt(S->getBody());
1320 }
1321 
1322 void
1323 StmtProfiler::VisitCXXScalarValueInitExpr(const CXXScalarValueInitExpr *S) {
1324   VisitExpr(S);
1325 }
1326 
1327 void StmtProfiler::VisitCXXDeleteExpr(const CXXDeleteExpr *S) {
1328   VisitExpr(S);
1329   ID.AddBoolean(S->isGlobalDelete());
1330   ID.AddBoolean(S->isArrayForm());
1331   VisitDecl(S->getOperatorDelete());
1332 }
1333 
1334 void StmtProfiler::VisitCXXNewExpr(const CXXNewExpr *S) {
1335   VisitExpr(S);
1336   VisitType(S->getAllocatedType());
1337   VisitDecl(S->getOperatorNew());
1338   VisitDecl(S->getOperatorDelete());
1339   ID.AddBoolean(S->isArray());
1340   ID.AddInteger(S->getNumPlacementArgs());
1341   ID.AddBoolean(S->isGlobalNew());
1342   ID.AddBoolean(S->isParenTypeId());
1343   ID.AddInteger(S->getInitializationStyle());
1344 }
1345 
1346 void
1347 StmtProfiler::VisitCXXPseudoDestructorExpr(const CXXPseudoDestructorExpr *S) {
1348   VisitExpr(S);
1349   ID.AddBoolean(S->isArrow());
1350   VisitNestedNameSpecifier(S->getQualifier());
1351   ID.AddBoolean(S->getScopeTypeInfo() != nullptr);
1352   if (S->getScopeTypeInfo())
1353     VisitType(S->getScopeTypeInfo()->getType());
1354   ID.AddBoolean(S->getDestroyedTypeInfo() != nullptr);
1355   if (S->getDestroyedTypeInfo())
1356     VisitType(S->getDestroyedType());
1357   else
1358     ID.AddPointer(S->getDestroyedTypeIdentifier());
1359 }
1360 
1361 void StmtProfiler::VisitOverloadExpr(const OverloadExpr *S) {
1362   VisitExpr(S);
1363   VisitNestedNameSpecifier(S->getQualifier());
1364   VisitName(S->getName());
1365   ID.AddBoolean(S->hasExplicitTemplateArgs());
1366   if (S->hasExplicitTemplateArgs())
1367     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1368 }
1369 
1370 void
1371 StmtProfiler::VisitUnresolvedLookupExpr(const UnresolvedLookupExpr *S) {
1372   VisitOverloadExpr(S);
1373 }
1374 
1375 void StmtProfiler::VisitTypeTraitExpr(const TypeTraitExpr *S) {
1376   VisitExpr(S);
1377   ID.AddInteger(S->getTrait());
1378   ID.AddInteger(S->getNumArgs());
1379   for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
1380     VisitType(S->getArg(I)->getType());
1381 }
1382 
1383 void StmtProfiler::VisitArrayTypeTraitExpr(const ArrayTypeTraitExpr *S) {
1384   VisitExpr(S);
1385   ID.AddInteger(S->getTrait());
1386   VisitType(S->getQueriedType());
1387 }
1388 
1389 void StmtProfiler::VisitExpressionTraitExpr(const ExpressionTraitExpr *S) {
1390   VisitExpr(S);
1391   ID.AddInteger(S->getTrait());
1392   VisitExpr(S->getQueriedExpression());
1393 }
1394 
1395 void StmtProfiler::VisitDependentScopeDeclRefExpr(
1396     const DependentScopeDeclRefExpr *S) {
1397   VisitExpr(S);
1398   VisitName(S->getDeclName());
1399   VisitNestedNameSpecifier(S->getQualifier());
1400   ID.AddBoolean(S->hasExplicitTemplateArgs());
1401   if (S->hasExplicitTemplateArgs())
1402     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1403 }
1404 
1405 void StmtProfiler::VisitExprWithCleanups(const ExprWithCleanups *S) {
1406   VisitExpr(S);
1407 }
1408 
1409 void StmtProfiler::VisitCXXUnresolvedConstructExpr(
1410     const CXXUnresolvedConstructExpr *S) {
1411   VisitExpr(S);
1412   VisitType(S->getTypeAsWritten());
1413 }
1414 
1415 void StmtProfiler::VisitCXXDependentScopeMemberExpr(
1416     const CXXDependentScopeMemberExpr *S) {
1417   ID.AddBoolean(S->isImplicitAccess());
1418   if (!S->isImplicitAccess()) {
1419     VisitExpr(S);
1420     ID.AddBoolean(S->isArrow());
1421   }
1422   VisitNestedNameSpecifier(S->getQualifier());
1423   VisitName(S->getMember());
1424   ID.AddBoolean(S->hasExplicitTemplateArgs());
1425   if (S->hasExplicitTemplateArgs())
1426     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1427 }
1428 
1429 void StmtProfiler::VisitUnresolvedMemberExpr(const UnresolvedMemberExpr *S) {
1430   ID.AddBoolean(S->isImplicitAccess());
1431   if (!S->isImplicitAccess()) {
1432     VisitExpr(S);
1433     ID.AddBoolean(S->isArrow());
1434   }
1435   VisitNestedNameSpecifier(S->getQualifier());
1436   VisitName(S->getMemberName());
1437   ID.AddBoolean(S->hasExplicitTemplateArgs());
1438   if (S->hasExplicitTemplateArgs())
1439     VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1440 }
1441 
1442 void StmtProfiler::VisitCXXNoexceptExpr(const CXXNoexceptExpr *S) {
1443   VisitExpr(S);
1444 }
1445 
1446 void StmtProfiler::VisitPackExpansionExpr(const PackExpansionExpr *S) {
1447   VisitExpr(S);
1448 }
1449 
1450 void StmtProfiler::VisitSizeOfPackExpr(const SizeOfPackExpr *S) {
1451   VisitExpr(S);
1452   VisitDecl(S->getPack());
1453   if (S->isPartiallySubstituted()) {
1454     auto Args = S->getPartialArguments();
1455     ID.AddInteger(Args.size());
1456     for (const auto &TA : Args)
1457       VisitTemplateArgument(TA);
1458   } else {
1459     ID.AddInteger(0);
1460   }
1461 }
1462 
1463 void StmtProfiler::VisitSubstNonTypeTemplateParmPackExpr(
1464     const SubstNonTypeTemplateParmPackExpr *S) {
1465   VisitExpr(S);
1466   VisitDecl(S->getParameterPack());
1467   VisitTemplateArgument(S->getArgumentPack());
1468 }
1469 
1470 void StmtProfiler::VisitSubstNonTypeTemplateParmExpr(
1471     const SubstNonTypeTemplateParmExpr *E) {
1472   // Profile exactly as the replacement expression.
1473   Visit(E->getReplacement());
1474 }
1475 
1476 void StmtProfiler::VisitFunctionParmPackExpr(const FunctionParmPackExpr *S) {
1477   VisitExpr(S);
1478   VisitDecl(S->getParameterPack());
1479   ID.AddInteger(S->getNumExpansions());
1480   for (FunctionParmPackExpr::iterator I = S->begin(), E = S->end(); I != E; ++I)
1481     VisitDecl(*I);
1482 }
1483 
1484 void StmtProfiler::VisitMaterializeTemporaryExpr(
1485                                            const MaterializeTemporaryExpr *S) {
1486   VisitExpr(S);
1487 }
1488 
1489 void StmtProfiler::VisitCXXFoldExpr(const CXXFoldExpr *S) {
1490   VisitExpr(S);
1491   ID.AddInteger(S->getOperator());
1492 }
1493 
1494 void StmtProfiler::VisitCoroutineBodyStmt(const CoroutineBodyStmt *S) {
1495   VisitStmt(S);
1496 }
1497 
1498 void StmtProfiler::VisitCoreturnStmt(const CoreturnStmt *S) {
1499   VisitStmt(S);
1500 }
1501 
1502 void StmtProfiler::VisitCoawaitExpr(const CoawaitExpr *S) {
1503   VisitExpr(S);
1504 }
1505 
1506 void StmtProfiler::VisitCoyieldExpr(const CoyieldExpr *S) {
1507   VisitExpr(S);
1508 }
1509 
1510 void StmtProfiler::VisitOpaqueValueExpr(const OpaqueValueExpr *E) {
1511   VisitExpr(E);
1512 }
1513 
1514 void StmtProfiler::VisitTypoExpr(const TypoExpr *E) {
1515   VisitExpr(E);
1516 }
1517 
1518 void StmtProfiler::VisitObjCStringLiteral(const ObjCStringLiteral *S) {
1519   VisitExpr(S);
1520 }
1521 
1522 void StmtProfiler::VisitObjCBoxedExpr(const ObjCBoxedExpr *E) {
1523   VisitExpr(E);
1524 }
1525 
1526 void StmtProfiler::VisitObjCArrayLiteral(const ObjCArrayLiteral *E) {
1527   VisitExpr(E);
1528 }
1529 
1530 void StmtProfiler::VisitObjCDictionaryLiteral(const ObjCDictionaryLiteral *E) {
1531   VisitExpr(E);
1532 }
1533 
1534 void StmtProfiler::VisitObjCEncodeExpr(const ObjCEncodeExpr *S) {
1535   VisitExpr(S);
1536   VisitType(S->getEncodedType());
1537 }
1538 
1539 void StmtProfiler::VisitObjCSelectorExpr(const ObjCSelectorExpr *S) {
1540   VisitExpr(S);
1541   VisitName(S->getSelector());
1542 }
1543 
1544 void StmtProfiler::VisitObjCProtocolExpr(const ObjCProtocolExpr *S) {
1545   VisitExpr(S);
1546   VisitDecl(S->getProtocol());
1547 }
1548 
1549 void StmtProfiler::VisitObjCIvarRefExpr(const ObjCIvarRefExpr *S) {
1550   VisitExpr(S);
1551   VisitDecl(S->getDecl());
1552   ID.AddBoolean(S->isArrow());
1553   ID.AddBoolean(S->isFreeIvar());
1554 }
1555 
1556 void StmtProfiler::VisitObjCPropertyRefExpr(const ObjCPropertyRefExpr *S) {
1557   VisitExpr(S);
1558   if (S->isImplicitProperty()) {
1559     VisitDecl(S->getImplicitPropertyGetter());
1560     VisitDecl(S->getImplicitPropertySetter());
1561   } else {
1562     VisitDecl(S->getExplicitProperty());
1563   }
1564   if (S->isSuperReceiver()) {
1565     ID.AddBoolean(S->isSuperReceiver());
1566     VisitType(S->getSuperReceiverType());
1567   }
1568 }
1569 
1570 void StmtProfiler::VisitObjCSubscriptRefExpr(const ObjCSubscriptRefExpr *S) {
1571   VisitExpr(S);
1572   VisitDecl(S->getAtIndexMethodDecl());
1573   VisitDecl(S->setAtIndexMethodDecl());
1574 }
1575 
1576 void StmtProfiler::VisitObjCMessageExpr(const ObjCMessageExpr *S) {
1577   VisitExpr(S);
1578   VisitName(S->getSelector());
1579   VisitDecl(S->getMethodDecl());
1580 }
1581 
1582 void StmtProfiler::VisitObjCIsaExpr(const ObjCIsaExpr *S) {
1583   VisitExpr(S);
1584   ID.AddBoolean(S->isArrow());
1585 }
1586 
1587 void StmtProfiler::VisitObjCBoolLiteralExpr(const ObjCBoolLiteralExpr *S) {
1588   VisitExpr(S);
1589   ID.AddBoolean(S->getValue());
1590 }
1591 
1592 void StmtProfiler::VisitObjCIndirectCopyRestoreExpr(
1593     const ObjCIndirectCopyRestoreExpr *S) {
1594   VisitExpr(S);
1595   ID.AddBoolean(S->shouldCopy());
1596 }
1597 
1598 void StmtProfiler::VisitObjCBridgedCastExpr(const ObjCBridgedCastExpr *S) {
1599   VisitExplicitCastExpr(S);
1600   ID.AddBoolean(S->getBridgeKind());
1601 }
1602 
1603 void StmtProfiler::VisitDecl(const Decl *D) {
1604   ID.AddInteger(D? D->getKind() : 0);
1605 
1606   if (Canonical && D) {
1607     if (const NonTypeTemplateParmDecl *NTTP =
1608           dyn_cast<NonTypeTemplateParmDecl>(D)) {
1609       ID.AddInteger(NTTP->getDepth());
1610       ID.AddInteger(NTTP->getIndex());
1611       ID.AddBoolean(NTTP->isParameterPack());
1612       VisitType(NTTP->getType());
1613       return;
1614     }
1615 
1616     if (const ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) {
1617       // The Itanium C++ ABI uses the type, scope depth, and scope
1618       // index of a parameter when mangling expressions that involve
1619       // function parameters, so we will use the parameter's type for
1620       // establishing function parameter identity. That way, our
1621       // definition of "equivalent" (per C++ [temp.over.link]) is at
1622       // least as strong as the definition of "equivalent" used for
1623       // name mangling.
1624       VisitType(Parm->getType());
1625       ID.AddInteger(Parm->getFunctionScopeDepth());
1626       ID.AddInteger(Parm->getFunctionScopeIndex());
1627       return;
1628     }
1629 
1630     if (const TemplateTypeParmDecl *TTP =
1631           dyn_cast<TemplateTypeParmDecl>(D)) {
1632       ID.AddInteger(TTP->getDepth());
1633       ID.AddInteger(TTP->getIndex());
1634       ID.AddBoolean(TTP->isParameterPack());
1635       return;
1636     }
1637 
1638     if (const TemplateTemplateParmDecl *TTP =
1639           dyn_cast<TemplateTemplateParmDecl>(D)) {
1640       ID.AddInteger(TTP->getDepth());
1641       ID.AddInteger(TTP->getIndex());
1642       ID.AddBoolean(TTP->isParameterPack());
1643       return;
1644     }
1645   }
1646 
1647   ID.AddPointer(D? D->getCanonicalDecl() : nullptr);
1648 }
1649 
1650 void StmtProfiler::VisitType(QualType T) {
1651   if (Canonical)
1652     T = Context.getCanonicalType(T);
1653 
1654   ID.AddPointer(T.getAsOpaquePtr());
1655 }
1656 
1657 void StmtProfiler::VisitName(DeclarationName Name) {
1658   ID.AddPointer(Name.getAsOpaquePtr());
1659 }
1660 
1661 void StmtProfiler::VisitNestedNameSpecifier(NestedNameSpecifier *NNS) {
1662   if (Canonical)
1663     NNS = Context.getCanonicalNestedNameSpecifier(NNS);
1664   ID.AddPointer(NNS);
1665 }
1666 
1667 void StmtProfiler::VisitTemplateName(TemplateName Name) {
1668   if (Canonical)
1669     Name = Context.getCanonicalTemplateName(Name);
1670 
1671   Name.Profile(ID);
1672 }
1673 
1674 void StmtProfiler::VisitTemplateArguments(const TemplateArgumentLoc *Args,
1675                                           unsigned NumArgs) {
1676   ID.AddInteger(NumArgs);
1677   for (unsigned I = 0; I != NumArgs; ++I)
1678     VisitTemplateArgument(Args[I].getArgument());
1679 }
1680 
1681 void StmtProfiler::VisitTemplateArgument(const TemplateArgument &Arg) {
1682   // Mostly repetitive with TemplateArgument::Profile!
1683   ID.AddInteger(Arg.getKind());
1684   switch (Arg.getKind()) {
1685   case TemplateArgument::Null:
1686     break;
1687 
1688   case TemplateArgument::Type:
1689     VisitType(Arg.getAsType());
1690     break;
1691 
1692   case TemplateArgument::Template:
1693   case TemplateArgument::TemplateExpansion:
1694     VisitTemplateName(Arg.getAsTemplateOrTemplatePattern());
1695     break;
1696 
1697   case TemplateArgument::Declaration:
1698     VisitDecl(Arg.getAsDecl());
1699     break;
1700 
1701   case TemplateArgument::NullPtr:
1702     VisitType(Arg.getNullPtrType());
1703     break;
1704 
1705   case TemplateArgument::Integral:
1706     Arg.getAsIntegral().Profile(ID);
1707     VisitType(Arg.getIntegralType());
1708     break;
1709 
1710   case TemplateArgument::Expression:
1711     Visit(Arg.getAsExpr());
1712     break;
1713 
1714   case TemplateArgument::Pack:
1715     for (const auto &P : Arg.pack_elements())
1716       VisitTemplateArgument(P);
1717     break;
1718   }
1719 }
1720 
1721 void Stmt::Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
1722                    bool Canonical) const {
1723   StmtProfiler Profiler(ID, Context, Canonical);
1724   Profiler.Visit(this);
1725 }
1726