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