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