StmtProfile.cpp revision 4b9c2d235fb9449e249d74f48ecfec601650de93 
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/StmtVisitor.h"
22#include "llvm/ADT/FoldingSet.h"
23using namespace clang;
24
25namespace {
26  class StmtProfiler : public ConstStmtVisitor<StmtProfiler> {
27    llvm::FoldingSetNodeID &ID;
28    const ASTContext &Context;
29    bool Canonical;
30
31  public:
32    StmtProfiler(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
33                 bool Canonical)
34      : ID(ID), Context(Context), Canonical(Canonical) { }
35
36    void VisitStmt(const Stmt *S);
37
38#define STMT(Node, Base) void Visit##Node(const Node *S);
39#include "clang/AST/StmtNodes.inc"
40
41    /// \brief Visit a declaration that is referenced within an expression
42    /// or statement.
43    void VisitDecl(const Decl *D);
44
45    /// \brief Visit a type that is referenced within an expression or
46    /// statement.
47    void VisitType(QualType T);
48
49    /// \brief Visit a name that occurs within an expression or statement.
50    void VisitName(DeclarationName Name);
51
52    /// \brief Visit a nested-name-specifier that occurs within an expression
53    /// or statement.
54    void VisitNestedNameSpecifier(NestedNameSpecifier *NNS);
55
56    /// \brief Visit a template name that occurs within an expression or
57    /// statement.
58    void VisitTemplateName(TemplateName Name);
59
60    /// \brief Visit template arguments that occur within an expression or
61    /// statement.
62    void VisitTemplateArguments(const TemplateArgumentLoc *Args,
63                                unsigned NumArgs);
64
65    /// \brief Visit a single template argument.
66    void VisitTemplateArgument(const TemplateArgument &Arg);
67  };
68}
69
70void StmtProfiler::VisitStmt(const Stmt *S) {
71  ID.AddInteger(S->getStmtClass());
72  for (Stmt::const_child_range C = S->children(); C; ++C)
73    Visit(*C);
74}
75
76void StmtProfiler::VisitDeclStmt(const DeclStmt *S) {
77  VisitStmt(S);
78  for (DeclStmt::const_decl_iterator D = S->decl_begin(), DEnd = S->decl_end();
79       D != DEnd; ++D)
80    VisitDecl(*D);
81}
82
83void StmtProfiler::VisitNullStmt(const NullStmt *S) {
84  VisitStmt(S);
85}
86
87void StmtProfiler::VisitCompoundStmt(const CompoundStmt *S) {
88  VisitStmt(S);
89}
90
91void StmtProfiler::VisitSwitchCase(const SwitchCase *S) {
92  VisitStmt(S);
93}
94
95void StmtProfiler::VisitCaseStmt(const CaseStmt *S) {
96  VisitStmt(S);
97}
98
99void StmtProfiler::VisitDefaultStmt(const DefaultStmt *S) {
100  VisitStmt(S);
101}
102
103void StmtProfiler::VisitLabelStmt(const LabelStmt *S) {
104  VisitStmt(S);
105  VisitDecl(S->getDecl());
106}
107
108void StmtProfiler::VisitIfStmt(const IfStmt *S) {
109  VisitStmt(S);
110  VisitDecl(S->getConditionVariable());
111}
112
113void StmtProfiler::VisitSwitchStmt(const SwitchStmt *S) {
114  VisitStmt(S);
115  VisitDecl(S->getConditionVariable());
116}
117
118void StmtProfiler::VisitWhileStmt(const WhileStmt *S) {
119  VisitStmt(S);
120  VisitDecl(S->getConditionVariable());
121}
122
123void StmtProfiler::VisitDoStmt(const DoStmt *S) {
124  VisitStmt(S);
125}
126
127void StmtProfiler::VisitForStmt(const ForStmt *S) {
128  VisitStmt(S);
129}
130
131void StmtProfiler::VisitGotoStmt(const GotoStmt *S) {
132  VisitStmt(S);
133  VisitDecl(S->getLabel());
134}
135
136void StmtProfiler::VisitIndirectGotoStmt(const IndirectGotoStmt *S) {
137  VisitStmt(S);
138}
139
140void StmtProfiler::VisitContinueStmt(const ContinueStmt *S) {
141  VisitStmt(S);
142}
143
144void StmtProfiler::VisitBreakStmt(const BreakStmt *S) {
145  VisitStmt(S);
146}
147
148void StmtProfiler::VisitReturnStmt(const ReturnStmt *S) {
149  VisitStmt(S);
150}
151
152void StmtProfiler::VisitAsmStmt(const AsmStmt *S) {
153  VisitStmt(S);
154  ID.AddBoolean(S->isVolatile());
155  ID.AddBoolean(S->isSimple());
156  VisitStringLiteral(S->getAsmString());
157  ID.AddInteger(S->getNumOutputs());
158  for (unsigned I = 0, N = S->getNumOutputs(); I != N; ++I) {
159    ID.AddString(S->getOutputName(I));
160    VisitStringLiteral(S->getOutputConstraintLiteral(I));
161  }
162  ID.AddInteger(S->getNumInputs());
163  for (unsigned I = 0, N = S->getNumInputs(); I != N; ++I) {
164    ID.AddString(S->getInputName(I));
165    VisitStringLiteral(S->getInputConstraintLiteral(I));
166  }
167  ID.AddInteger(S->getNumClobbers());
168  for (unsigned I = 0, N = S->getNumClobbers(); I != N; ++I)
169    VisitStringLiteral(S->getClobber(I));
170}
171
172void StmtProfiler::VisitCXXCatchStmt(const CXXCatchStmt *S) {
173  VisitStmt(S);
174  VisitType(S->getCaughtType());
175}
176
177void StmtProfiler::VisitCXXTryStmt(const CXXTryStmt *S) {
178  VisitStmt(S);
179}
180
181void StmtProfiler::VisitCXXForRangeStmt(const CXXForRangeStmt *S) {
182  VisitStmt(S);
183}
184
185void StmtProfiler::VisitMSDependentExistsStmt(const MSDependentExistsStmt *S) {
186  VisitStmt(S);
187  ID.AddBoolean(S->isIfExists());
188  VisitNestedNameSpecifier(S->getQualifierLoc().getNestedNameSpecifier());
189  VisitName(S->getNameInfo().getName());
190}
191
192void StmtProfiler::VisitSEHTryStmt(const SEHTryStmt *S) {
193  VisitStmt(S);
194}
195
196void StmtProfiler::VisitSEHFinallyStmt(const SEHFinallyStmt *S) {
197  VisitStmt(S);
198}
199
200void StmtProfiler::VisitSEHExceptStmt(const SEHExceptStmt *S) {
201  VisitStmt(S);
202}
203
204void StmtProfiler::VisitObjCForCollectionStmt(const ObjCForCollectionStmt *S) {
205  VisitStmt(S);
206}
207
208void StmtProfiler::VisitObjCAtCatchStmt(const ObjCAtCatchStmt *S) {
209  VisitStmt(S);
210  ID.AddBoolean(S->hasEllipsis());
211  if (S->getCatchParamDecl())
212    VisitType(S->getCatchParamDecl()->getType());
213}
214
215void StmtProfiler::VisitObjCAtFinallyStmt(const ObjCAtFinallyStmt *S) {
216  VisitStmt(S);
217}
218
219void StmtProfiler::VisitObjCAtTryStmt(const ObjCAtTryStmt *S) {
220  VisitStmt(S);
221}
222
223void
224StmtProfiler::VisitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt *S) {
225  VisitStmt(S);
226}
227
228void StmtProfiler::VisitObjCAtThrowStmt(const ObjCAtThrowStmt *S) {
229  VisitStmt(S);
230}
231
232void
233StmtProfiler::VisitObjCAutoreleasePoolStmt(const ObjCAutoreleasePoolStmt *S) {
234  VisitStmt(S);
235}
236
237void StmtProfiler::VisitExpr(const Expr *S) {
238  VisitStmt(S);
239}
240
241void StmtProfiler::VisitDeclRefExpr(const DeclRefExpr *S) {
242  VisitExpr(S);
243  if (!Canonical)
244    VisitNestedNameSpecifier(S->getQualifier());
245  VisitDecl(S->getDecl());
246  if (!Canonical)
247    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
248}
249
250void StmtProfiler::VisitPredefinedExpr(const PredefinedExpr *S) {
251  VisitExpr(S);
252  ID.AddInteger(S->getIdentType());
253}
254
255void StmtProfiler::VisitIntegerLiteral(const IntegerLiteral *S) {
256  VisitExpr(S);
257  S->getValue().Profile(ID);
258}
259
260void StmtProfiler::VisitCharacterLiteral(const CharacterLiteral *S) {
261  VisitExpr(S);
262  ID.AddInteger(S->getKind());
263  ID.AddInteger(S->getValue());
264}
265
266void StmtProfiler::VisitFloatingLiteral(const FloatingLiteral *S) {
267  VisitExpr(S);
268  S->getValue().Profile(ID);
269  ID.AddBoolean(S->isExact());
270}
271
272void StmtProfiler::VisitImaginaryLiteral(const ImaginaryLiteral *S) {
273  VisitExpr(S);
274}
275
276void StmtProfiler::VisitStringLiteral(const StringLiteral *S) {
277  VisitExpr(S);
278  ID.AddString(S->getBytes());
279  ID.AddInteger(S->getKind());
280}
281
282void StmtProfiler::VisitParenExpr(const ParenExpr *S) {
283  VisitExpr(S);
284}
285
286void StmtProfiler::VisitParenListExpr(const ParenListExpr *S) {
287  VisitExpr(S);
288}
289
290void StmtProfiler::VisitUnaryOperator(const UnaryOperator *S) {
291  VisitExpr(S);
292  ID.AddInteger(S->getOpcode());
293}
294
295void StmtProfiler::VisitOffsetOfExpr(const OffsetOfExpr *S) {
296  VisitType(S->getTypeSourceInfo()->getType());
297  unsigned n = S->getNumComponents();
298  for (unsigned i = 0; i < n; ++i) {
299    const OffsetOfExpr::OffsetOfNode& ON = S->getComponent(i);
300    ID.AddInteger(ON.getKind());
301    switch (ON.getKind()) {
302    case OffsetOfExpr::OffsetOfNode::Array:
303      // Expressions handled below.
304      break;
305
306    case OffsetOfExpr::OffsetOfNode::Field:
307      VisitDecl(ON.getField());
308      break;
309
310    case OffsetOfExpr::OffsetOfNode::Identifier:
311      ID.AddPointer(ON.getFieldName());
312      break;
313
314    case OffsetOfExpr::OffsetOfNode::Base:
315      // These nodes are implicit, and therefore don't need profiling.
316      break;
317    }
318  }
319
320  VisitExpr(S);
321}
322
323void
324StmtProfiler::VisitUnaryExprOrTypeTraitExpr(const UnaryExprOrTypeTraitExpr *S) {
325  VisitExpr(S);
326  ID.AddInteger(S->getKind());
327  if (S->isArgumentType())
328    VisitType(S->getArgumentType());
329}
330
331void StmtProfiler::VisitArraySubscriptExpr(const ArraySubscriptExpr *S) {
332  VisitExpr(S);
333}
334
335void StmtProfiler::VisitCallExpr(const CallExpr *S) {
336  VisitExpr(S);
337}
338
339void StmtProfiler::VisitMemberExpr(const MemberExpr *S) {
340  VisitExpr(S);
341  VisitDecl(S->getMemberDecl());
342  if (!Canonical)
343    VisitNestedNameSpecifier(S->getQualifier());
344  ID.AddBoolean(S->isArrow());
345}
346
347void StmtProfiler::VisitCompoundLiteralExpr(const CompoundLiteralExpr *S) {
348  VisitExpr(S);
349  ID.AddBoolean(S->isFileScope());
350}
351
352void StmtProfiler::VisitCastExpr(const CastExpr *S) {
353  VisitExpr(S);
354}
355
356void StmtProfiler::VisitImplicitCastExpr(const ImplicitCastExpr *S) {
357  VisitCastExpr(S);
358  ID.AddInteger(S->getValueKind());
359}
360
361void StmtProfiler::VisitExplicitCastExpr(const ExplicitCastExpr *S) {
362  VisitCastExpr(S);
363  VisitType(S->getTypeAsWritten());
364}
365
366void StmtProfiler::VisitCStyleCastExpr(const CStyleCastExpr *S) {
367  VisitExplicitCastExpr(S);
368}
369
370void StmtProfiler::VisitBinaryOperator(const BinaryOperator *S) {
371  VisitExpr(S);
372  ID.AddInteger(S->getOpcode());
373}
374
375void
376StmtProfiler::VisitCompoundAssignOperator(const CompoundAssignOperator *S) {
377  VisitBinaryOperator(S);
378}
379
380void StmtProfiler::VisitConditionalOperator(const ConditionalOperator *S) {
381  VisitExpr(S);
382}
383
384void StmtProfiler::VisitBinaryConditionalOperator(
385    const BinaryConditionalOperator *S) {
386  VisitExpr(S);
387}
388
389void StmtProfiler::VisitAddrLabelExpr(const AddrLabelExpr *S) {
390  VisitExpr(S);
391  VisitDecl(S->getLabel());
392}
393
394void StmtProfiler::VisitStmtExpr(const StmtExpr *S) {
395  VisitExpr(S);
396}
397
398void StmtProfiler::VisitShuffleVectorExpr(const ShuffleVectorExpr *S) {
399  VisitExpr(S);
400}
401
402void StmtProfiler::VisitChooseExpr(const ChooseExpr *S) {
403  VisitExpr(S);
404}
405
406void StmtProfiler::VisitGNUNullExpr(const GNUNullExpr *S) {
407  VisitExpr(S);
408}
409
410void StmtProfiler::VisitVAArgExpr(const VAArgExpr *S) {
411  VisitExpr(S);
412}
413
414void StmtProfiler::VisitInitListExpr(const InitListExpr *S) {
415  if (S->getSyntacticForm()) {
416    VisitInitListExpr(S->getSyntacticForm());
417    return;
418  }
419
420  VisitExpr(S);
421}
422
423void StmtProfiler::VisitDesignatedInitExpr(const DesignatedInitExpr *S) {
424  VisitExpr(S);
425  ID.AddBoolean(S->usesGNUSyntax());
426  for (DesignatedInitExpr::const_designators_iterator D =
427         S->designators_begin(), DEnd = S->designators_end();
428       D != DEnd; ++D) {
429    if (D->isFieldDesignator()) {
430      ID.AddInteger(0);
431      VisitName(D->getFieldName());
432      continue;
433    }
434
435    if (D->isArrayDesignator()) {
436      ID.AddInteger(1);
437    } else {
438      assert(D->isArrayRangeDesignator());
439      ID.AddInteger(2);
440    }
441    ID.AddInteger(D->getFirstExprIndex());
442  }
443}
444
445void StmtProfiler::VisitImplicitValueInitExpr(const ImplicitValueInitExpr *S) {
446  VisitExpr(S);
447}
448
449void StmtProfiler::VisitExtVectorElementExpr(const ExtVectorElementExpr *S) {
450  VisitExpr(S);
451  VisitName(&S->getAccessor());
452}
453
454void StmtProfiler::VisitBlockExpr(const BlockExpr *S) {
455  VisitExpr(S);
456  VisitDecl(S->getBlockDecl());
457}
458
459void StmtProfiler::VisitBlockDeclRefExpr(const BlockDeclRefExpr *S) {
460  VisitExpr(S);
461  VisitDecl(S->getDecl());
462  ID.AddBoolean(S->isByRef());
463  ID.AddBoolean(S->isConstQualAdded());
464}
465
466void StmtProfiler::VisitGenericSelectionExpr(const GenericSelectionExpr *S) {
467  VisitExpr(S);
468  for (unsigned i = 0; i != S->getNumAssocs(); ++i) {
469    QualType T = S->getAssocType(i);
470    if (T.isNull())
471      ID.AddPointer(0);
472    else
473      VisitType(T);
474    VisitExpr(S->getAssocExpr(i));
475  }
476}
477
478void StmtProfiler::VisitPseudoObjectExpr(const PseudoObjectExpr *S) {
479  VisitExpr(S);
480  for (PseudoObjectExpr::const_semantics_iterator
481         i = S->semantics_begin(), e = S->semantics_end(); i != e; ++i)
482    // Normally, we would not profile the source expressions of OVEs.
483    if (const OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(*i))
484      Visit(OVE->getSourceExpr());
485}
486
487void StmtProfiler::VisitAtomicExpr(const AtomicExpr *S) {
488  VisitExpr(S);
489  ID.AddInteger(S->getOp());
490}
491
492static Stmt::StmtClass DecodeOperatorCall(const CXXOperatorCallExpr *S,
493                                          UnaryOperatorKind &UnaryOp,
494                                          BinaryOperatorKind &BinaryOp) {
495  switch (S->getOperator()) {
496  case OO_None:
497  case OO_New:
498  case OO_Delete:
499  case OO_Array_New:
500  case OO_Array_Delete:
501  case OO_Arrow:
502  case OO_Call:
503  case OO_Conditional:
504  case NUM_OVERLOADED_OPERATORS:
505    llvm_unreachable("Invalid operator call kind");
506    return Stmt::ArraySubscriptExprClass;
507
508  case OO_Plus:
509    if (S->getNumArgs() == 1) {
510      UnaryOp = UO_Plus;
511      return Stmt::UnaryOperatorClass;
512    }
513
514    BinaryOp = BO_Add;
515    return Stmt::BinaryOperatorClass;
516
517  case OO_Minus:
518    if (S->getNumArgs() == 1) {
519      UnaryOp = UO_Minus;
520      return Stmt::UnaryOperatorClass;
521    }
522
523    BinaryOp = BO_Sub;
524    return Stmt::BinaryOperatorClass;
525
526  case OO_Star:
527    if (S->getNumArgs() == 1) {
528      UnaryOp = UO_Minus;
529      return Stmt::UnaryOperatorClass;
530    }
531
532    BinaryOp = BO_Sub;
533    return Stmt::BinaryOperatorClass;
534
535  case OO_Slash:
536    BinaryOp = BO_Div;
537    return Stmt::BinaryOperatorClass;
538
539  case OO_Percent:
540    BinaryOp = BO_Rem;
541    return Stmt::BinaryOperatorClass;
542
543  case OO_Caret:
544    BinaryOp = BO_Xor;
545    return Stmt::BinaryOperatorClass;
546
547  case OO_Amp:
548    if (S->getNumArgs() == 1) {
549      UnaryOp = UO_AddrOf;
550      return Stmt::UnaryOperatorClass;
551    }
552
553    BinaryOp = BO_And;
554    return Stmt::BinaryOperatorClass;
555
556  case OO_Pipe:
557    BinaryOp = BO_Or;
558    return Stmt::BinaryOperatorClass;
559
560  case OO_Tilde:
561    UnaryOp = UO_Not;
562    return Stmt::UnaryOperatorClass;
563
564  case OO_Exclaim:
565    UnaryOp = UO_LNot;
566    return Stmt::UnaryOperatorClass;
567
568  case OO_Equal:
569    BinaryOp = BO_Assign;
570    return Stmt::BinaryOperatorClass;
571
572  case OO_Less:
573    BinaryOp = BO_LT;
574    return Stmt::BinaryOperatorClass;
575
576  case OO_Greater:
577    BinaryOp = BO_GT;
578    return Stmt::BinaryOperatorClass;
579
580  case OO_PlusEqual:
581    BinaryOp = BO_AddAssign;
582    return Stmt::CompoundAssignOperatorClass;
583
584  case OO_MinusEqual:
585    BinaryOp = BO_SubAssign;
586    return Stmt::CompoundAssignOperatorClass;
587
588  case OO_StarEqual:
589    BinaryOp = BO_MulAssign;
590    return Stmt::CompoundAssignOperatorClass;
591
592  case OO_SlashEqual:
593    BinaryOp = BO_DivAssign;
594    return Stmt::CompoundAssignOperatorClass;
595
596  case OO_PercentEqual:
597    BinaryOp = BO_RemAssign;
598    return Stmt::CompoundAssignOperatorClass;
599
600  case OO_CaretEqual:
601    BinaryOp = BO_XorAssign;
602    return Stmt::CompoundAssignOperatorClass;
603
604  case OO_AmpEqual:
605    BinaryOp = BO_AndAssign;
606    return Stmt::CompoundAssignOperatorClass;
607
608  case OO_PipeEqual:
609    BinaryOp = BO_OrAssign;
610    return Stmt::CompoundAssignOperatorClass;
611
612  case OO_LessLess:
613    BinaryOp = BO_Shl;
614    return Stmt::BinaryOperatorClass;
615
616  case OO_GreaterGreater:
617    BinaryOp = BO_Shr;
618    return Stmt::BinaryOperatorClass;
619
620  case OO_LessLessEqual:
621    BinaryOp = BO_ShlAssign;
622    return Stmt::CompoundAssignOperatorClass;
623
624  case OO_GreaterGreaterEqual:
625    BinaryOp = BO_ShrAssign;
626    return Stmt::CompoundAssignOperatorClass;
627
628  case OO_EqualEqual:
629    BinaryOp = BO_EQ;
630    return Stmt::BinaryOperatorClass;
631
632  case OO_ExclaimEqual:
633    BinaryOp = BO_NE;
634    return Stmt::BinaryOperatorClass;
635
636  case OO_LessEqual:
637    BinaryOp = BO_LE;
638    return Stmt::BinaryOperatorClass;
639
640  case OO_GreaterEqual:
641    BinaryOp = BO_GE;
642    return Stmt::BinaryOperatorClass;
643
644  case OO_AmpAmp:
645    BinaryOp = BO_LAnd;
646    return Stmt::BinaryOperatorClass;
647
648  case OO_PipePipe:
649    BinaryOp = BO_LOr;
650    return Stmt::BinaryOperatorClass;
651
652  case OO_PlusPlus:
653    UnaryOp = S->getNumArgs() == 1? UO_PreInc
654                                  : UO_PostInc;
655    return Stmt::UnaryOperatorClass;
656
657  case OO_MinusMinus:
658    UnaryOp = S->getNumArgs() == 1? UO_PreDec
659                                  : UO_PostDec;
660    return Stmt::UnaryOperatorClass;
661
662  case OO_Comma:
663    BinaryOp = BO_Comma;
664    return Stmt::BinaryOperatorClass;
665
666
667  case OO_ArrowStar:
668    BinaryOp = BO_PtrMemI;
669    return Stmt::BinaryOperatorClass;
670
671  case OO_Subscript:
672    return Stmt::ArraySubscriptExprClass;
673  }
674
675  llvm_unreachable("Invalid overloaded operator expression");
676}
677
678
679void StmtProfiler::VisitCXXOperatorCallExpr(const CXXOperatorCallExpr *S) {
680  if (S->isTypeDependent()) {
681    // Type-dependent operator calls are profiled like their underlying
682    // syntactic operator.
683    UnaryOperatorKind UnaryOp = UO_Extension;
684    BinaryOperatorKind BinaryOp = BO_Comma;
685    Stmt::StmtClass SC = DecodeOperatorCall(S, UnaryOp, BinaryOp);
686
687    ID.AddInteger(SC);
688    for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
689      Visit(S->getArg(I));
690    if (SC == Stmt::UnaryOperatorClass)
691      ID.AddInteger(UnaryOp);
692    else if (SC == Stmt::BinaryOperatorClass ||
693             SC == Stmt::CompoundAssignOperatorClass)
694      ID.AddInteger(BinaryOp);
695    else
696      assert(SC == Stmt::ArraySubscriptExprClass);
697
698    return;
699  }
700
701  VisitCallExpr(S);
702  ID.AddInteger(S->getOperator());
703}
704
705void StmtProfiler::VisitCXXMemberCallExpr(const CXXMemberCallExpr *S) {
706  VisitCallExpr(S);
707}
708
709void StmtProfiler::VisitCUDAKernelCallExpr(const CUDAKernelCallExpr *S) {
710  VisitCallExpr(S);
711}
712
713void StmtProfiler::VisitAsTypeExpr(const AsTypeExpr *S) {
714  VisitExpr(S);
715}
716
717void StmtProfiler::VisitCXXNamedCastExpr(const CXXNamedCastExpr *S) {
718  VisitExplicitCastExpr(S);
719}
720
721void StmtProfiler::VisitCXXStaticCastExpr(const CXXStaticCastExpr *S) {
722  VisitCXXNamedCastExpr(S);
723}
724
725void StmtProfiler::VisitCXXDynamicCastExpr(const CXXDynamicCastExpr *S) {
726  VisitCXXNamedCastExpr(S);
727}
728
729void
730StmtProfiler::VisitCXXReinterpretCastExpr(const CXXReinterpretCastExpr *S) {
731  VisitCXXNamedCastExpr(S);
732}
733
734void StmtProfiler::VisitCXXConstCastExpr(const CXXConstCastExpr *S) {
735  VisitCXXNamedCastExpr(S);
736}
737
738void StmtProfiler::VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *S) {
739  VisitExpr(S);
740  ID.AddBoolean(S->getValue());
741}
742
743void StmtProfiler::VisitCXXNullPtrLiteralExpr(const CXXNullPtrLiteralExpr *S) {
744  VisitExpr(S);
745}
746
747void StmtProfiler::VisitCXXTypeidExpr(const CXXTypeidExpr *S) {
748  VisitExpr(S);
749  if (S->isTypeOperand())
750    VisitType(S->getTypeOperand());
751}
752
753void StmtProfiler::VisitCXXUuidofExpr(const CXXUuidofExpr *S) {
754  VisitExpr(S);
755  if (S->isTypeOperand())
756    VisitType(S->getTypeOperand());
757}
758
759void StmtProfiler::VisitCXXThisExpr(const CXXThisExpr *S) {
760  VisitExpr(S);
761}
762
763void StmtProfiler::VisitCXXThrowExpr(const CXXThrowExpr *S) {
764  VisitExpr(S);
765}
766
767void StmtProfiler::VisitCXXDefaultArgExpr(const CXXDefaultArgExpr *S) {
768  VisitExpr(S);
769  VisitDecl(S->getParam());
770}
771
772void StmtProfiler::VisitCXXBindTemporaryExpr(const CXXBindTemporaryExpr *S) {
773  VisitExpr(S);
774  VisitDecl(
775         const_cast<CXXDestructorDecl *>(S->getTemporary()->getDestructor()));
776}
777
778void StmtProfiler::VisitCXXConstructExpr(const CXXConstructExpr *S) {
779  VisitExpr(S);
780  VisitDecl(S->getConstructor());
781  ID.AddBoolean(S->isElidable());
782}
783
784void StmtProfiler::VisitCXXFunctionalCastExpr(const CXXFunctionalCastExpr *S) {
785  VisitExplicitCastExpr(S);
786}
787
788void
789StmtProfiler::VisitCXXTemporaryObjectExpr(const CXXTemporaryObjectExpr *S) {
790  VisitCXXConstructExpr(S);
791}
792
793void
794StmtProfiler::VisitCXXScalarValueInitExpr(const CXXScalarValueInitExpr *S) {
795  VisitExpr(S);
796}
797
798void StmtProfiler::VisitCXXDeleteExpr(const CXXDeleteExpr *S) {
799  VisitExpr(S);
800  ID.AddBoolean(S->isGlobalDelete());
801  ID.AddBoolean(S->isArrayForm());
802  VisitDecl(S->getOperatorDelete());
803}
804
805
806void StmtProfiler::VisitCXXNewExpr(const CXXNewExpr *S) {
807  VisitExpr(S);
808  VisitType(S->getAllocatedType());
809  VisitDecl(S->getOperatorNew());
810  VisitDecl(S->getOperatorDelete());
811  VisitDecl(S->getConstructor());
812  ID.AddBoolean(S->isArray());
813  ID.AddInteger(S->getNumPlacementArgs());
814  ID.AddBoolean(S->isGlobalNew());
815  ID.AddBoolean(S->isParenTypeId());
816  ID.AddBoolean(S->hasInitializer());
817  ID.AddInteger(S->getNumConstructorArgs());
818}
819
820void
821StmtProfiler::VisitCXXPseudoDestructorExpr(const CXXPseudoDestructorExpr *S) {
822  VisitExpr(S);
823  ID.AddBoolean(S->isArrow());
824  VisitNestedNameSpecifier(S->getQualifier());
825  VisitType(S->getDestroyedType());
826}
827
828void StmtProfiler::VisitOverloadExpr(const OverloadExpr *S) {
829  VisitExpr(S);
830  VisitNestedNameSpecifier(S->getQualifier());
831  VisitName(S->getName());
832  ID.AddBoolean(S->hasExplicitTemplateArgs());
833  if (S->hasExplicitTemplateArgs())
834    VisitTemplateArguments(S->getExplicitTemplateArgs().getTemplateArgs(),
835                           S->getExplicitTemplateArgs().NumTemplateArgs);
836}
837
838void
839StmtProfiler::VisitUnresolvedLookupExpr(const UnresolvedLookupExpr *S) {
840  VisitOverloadExpr(S);
841}
842
843void StmtProfiler::VisitUnaryTypeTraitExpr(const UnaryTypeTraitExpr *S) {
844  VisitExpr(S);
845  ID.AddInteger(S->getTrait());
846  VisitType(S->getQueriedType());
847}
848
849void StmtProfiler::VisitBinaryTypeTraitExpr(const BinaryTypeTraitExpr *S) {
850  VisitExpr(S);
851  ID.AddInteger(S->getTrait());
852  VisitType(S->getLhsType());
853  VisitType(S->getRhsType());
854}
855
856void StmtProfiler::VisitArrayTypeTraitExpr(const ArrayTypeTraitExpr *S) {
857  VisitExpr(S);
858  ID.AddInteger(S->getTrait());
859  VisitType(S->getQueriedType());
860}
861
862void StmtProfiler::VisitExpressionTraitExpr(const ExpressionTraitExpr *S) {
863  VisitExpr(S);
864  ID.AddInteger(S->getTrait());
865  VisitExpr(S->getQueriedExpression());
866}
867
868void StmtProfiler::VisitDependentScopeDeclRefExpr(
869    const DependentScopeDeclRefExpr *S) {
870  VisitExpr(S);
871  VisitName(S->getDeclName());
872  VisitNestedNameSpecifier(S->getQualifier());
873  ID.AddBoolean(S->hasExplicitTemplateArgs());
874  if (S->hasExplicitTemplateArgs())
875    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
876}
877
878void StmtProfiler::VisitExprWithCleanups(const ExprWithCleanups *S) {
879  VisitExpr(S);
880}
881
882void StmtProfiler::VisitCXXUnresolvedConstructExpr(
883    const CXXUnresolvedConstructExpr *S) {
884  VisitExpr(S);
885  VisitType(S->getTypeAsWritten());
886}
887
888void StmtProfiler::VisitCXXDependentScopeMemberExpr(
889    const CXXDependentScopeMemberExpr *S) {
890  ID.AddBoolean(S->isImplicitAccess());
891  if (!S->isImplicitAccess()) {
892    VisitExpr(S);
893    ID.AddBoolean(S->isArrow());
894  }
895  VisitNestedNameSpecifier(S->getQualifier());
896  VisitName(S->getMember());
897  ID.AddBoolean(S->hasExplicitTemplateArgs());
898  if (S->hasExplicitTemplateArgs())
899    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
900}
901
902void StmtProfiler::VisitUnresolvedMemberExpr(const UnresolvedMemberExpr *S) {
903  ID.AddBoolean(S->isImplicitAccess());
904  if (!S->isImplicitAccess()) {
905    VisitExpr(S);
906    ID.AddBoolean(S->isArrow());
907  }
908  VisitNestedNameSpecifier(S->getQualifier());
909  VisitName(S->getMemberName());
910  ID.AddBoolean(S->hasExplicitTemplateArgs());
911  if (S->hasExplicitTemplateArgs())
912    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
913}
914
915void StmtProfiler::VisitCXXNoexceptExpr(const CXXNoexceptExpr *S) {
916  VisitExpr(S);
917}
918
919void StmtProfiler::VisitPackExpansionExpr(const PackExpansionExpr *S) {
920  VisitExpr(S);
921}
922
923void StmtProfiler::VisitSizeOfPackExpr(const SizeOfPackExpr *S) {
924  VisitExpr(S);
925  VisitDecl(S->getPack());
926}
927
928void StmtProfiler::VisitSubstNonTypeTemplateParmPackExpr(
929    const SubstNonTypeTemplateParmPackExpr *S) {
930  VisitExpr(S);
931  VisitDecl(S->getParameterPack());
932  VisitTemplateArgument(S->getArgumentPack());
933}
934
935void StmtProfiler::VisitSubstNonTypeTemplateParmExpr(
936    const SubstNonTypeTemplateParmExpr *E) {
937  // Profile exactly as the replacement expression.
938  Visit(E->getReplacement());
939}
940
941void StmtProfiler::VisitMaterializeTemporaryExpr(
942                                           const MaterializeTemporaryExpr *S) {
943  VisitExpr(S);
944}
945
946void StmtProfiler::VisitOpaqueValueExpr(const OpaqueValueExpr *E) {
947  VisitExpr(E);
948}
949
950void StmtProfiler::VisitObjCStringLiteral(const ObjCStringLiteral *S) {
951  VisitExpr(S);
952}
953
954void StmtProfiler::VisitObjCEncodeExpr(const ObjCEncodeExpr *S) {
955  VisitExpr(S);
956  VisitType(S->getEncodedType());
957}
958
959void StmtProfiler::VisitObjCSelectorExpr(const ObjCSelectorExpr *S) {
960  VisitExpr(S);
961  VisitName(S->getSelector());
962}
963
964void StmtProfiler::VisitObjCProtocolExpr(const ObjCProtocolExpr *S) {
965  VisitExpr(S);
966  VisitDecl(S->getProtocol());
967}
968
969void StmtProfiler::VisitObjCIvarRefExpr(const ObjCIvarRefExpr *S) {
970  VisitExpr(S);
971  VisitDecl(S->getDecl());
972  ID.AddBoolean(S->isArrow());
973  ID.AddBoolean(S->isFreeIvar());
974}
975
976void StmtProfiler::VisitObjCPropertyRefExpr(const ObjCPropertyRefExpr *S) {
977  VisitExpr(S);
978  if (S->isImplicitProperty()) {
979    VisitDecl(S->getImplicitPropertyGetter());
980    VisitDecl(S->getImplicitPropertySetter());
981  } else {
982    VisitDecl(S->getExplicitProperty());
983  }
984  if (S->isSuperReceiver()) {
985    ID.AddBoolean(S->isSuperReceiver());
986    VisitType(S->getSuperReceiverType());
987  }
988}
989
990void StmtProfiler::VisitObjCMessageExpr(const ObjCMessageExpr *S) {
991  VisitExpr(S);
992  VisitName(S->getSelector());
993  VisitDecl(S->getMethodDecl());
994}
995
996void StmtProfiler::VisitObjCIsaExpr(const ObjCIsaExpr *S) {
997  VisitExpr(S);
998  ID.AddBoolean(S->isArrow());
999}
1000
1001void StmtProfiler::VisitObjCIndirectCopyRestoreExpr(
1002    const ObjCIndirectCopyRestoreExpr *S) {
1003  VisitExpr(S);
1004  ID.AddBoolean(S->shouldCopy());
1005}
1006
1007void StmtProfiler::VisitObjCBridgedCastExpr(const ObjCBridgedCastExpr *S) {
1008  VisitExplicitCastExpr(S);
1009  ID.AddBoolean(S->getBridgeKind());
1010}
1011
1012void StmtProfiler::VisitDecl(const Decl *D) {
1013  ID.AddInteger(D? D->getKind() : 0);
1014
1015  if (Canonical && D) {
1016    if (const NonTypeTemplateParmDecl *NTTP =
1017          dyn_cast<NonTypeTemplateParmDecl>(D)) {
1018      ID.AddInteger(NTTP->getDepth());
1019      ID.AddInteger(NTTP->getIndex());
1020      ID.AddBoolean(NTTP->isParameterPack());
1021      VisitType(NTTP->getType());
1022      return;
1023    }
1024
1025    if (const ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) {
1026      // The Itanium C++ ABI uses the type, scope depth, and scope
1027      // index of a parameter when mangling expressions that involve
1028      // function parameters, so we will use the parameter's type for
1029      // establishing function parameter identity. That way, our
1030      // definition of "equivalent" (per C++ [temp.over.link]) is at
1031      // least as strong as the definition of "equivalent" used for
1032      // name mangling.
1033      VisitType(Parm->getType());
1034      ID.AddInteger(Parm->getFunctionScopeDepth());
1035      ID.AddInteger(Parm->getFunctionScopeIndex());
1036      return;
1037    }
1038
1039    if (const TemplateTemplateParmDecl *TTP =
1040          dyn_cast<TemplateTemplateParmDecl>(D)) {
1041      ID.AddInteger(TTP->getDepth());
1042      ID.AddInteger(TTP->getIndex());
1043      ID.AddBoolean(TTP->isParameterPack());
1044      return;
1045    }
1046  }
1047
1048  ID.AddPointer(D? D->getCanonicalDecl() : 0);
1049}
1050
1051void StmtProfiler::VisitType(QualType T) {
1052  if (Canonical)
1053    T = Context.getCanonicalType(T);
1054
1055  ID.AddPointer(T.getAsOpaquePtr());
1056}
1057
1058void StmtProfiler::VisitName(DeclarationName Name) {
1059  ID.AddPointer(Name.getAsOpaquePtr());
1060}
1061
1062void StmtProfiler::VisitNestedNameSpecifier(NestedNameSpecifier *NNS) {
1063  if (Canonical)
1064    NNS = Context.getCanonicalNestedNameSpecifier(NNS);
1065  ID.AddPointer(NNS);
1066}
1067
1068void StmtProfiler::VisitTemplateName(TemplateName Name) {
1069  if (Canonical)
1070    Name = Context.getCanonicalTemplateName(Name);
1071
1072  Name.Profile(ID);
1073}
1074
1075void StmtProfiler::VisitTemplateArguments(const TemplateArgumentLoc *Args,
1076                                          unsigned NumArgs) {
1077  ID.AddInteger(NumArgs);
1078  for (unsigned I = 0; I != NumArgs; ++I)
1079    VisitTemplateArgument(Args[I].getArgument());
1080}
1081
1082void StmtProfiler::VisitTemplateArgument(const TemplateArgument &Arg) {
1083  // Mostly repetitive with TemplateArgument::Profile!
1084  ID.AddInteger(Arg.getKind());
1085  switch (Arg.getKind()) {
1086  case TemplateArgument::Null:
1087    break;
1088
1089  case TemplateArgument::Type:
1090    VisitType(Arg.getAsType());
1091    break;
1092
1093  case TemplateArgument::Template:
1094  case TemplateArgument::TemplateExpansion:
1095    VisitTemplateName(Arg.getAsTemplateOrTemplatePattern());
1096    break;
1097
1098  case TemplateArgument::Declaration:
1099    VisitDecl(Arg.getAsDecl());
1100    break;
1101
1102  case TemplateArgument::Integral:
1103    Arg.getAsIntegral()->Profile(ID);
1104    VisitType(Arg.getIntegralType());
1105    break;
1106
1107  case TemplateArgument::Expression:
1108    Visit(Arg.getAsExpr());
1109    break;
1110
1111  case TemplateArgument::Pack:
1112    const TemplateArgument *Pack = Arg.pack_begin();
1113    for (unsigned i = 0, e = Arg.pack_size(); i != e; ++i)
1114      VisitTemplateArgument(Pack[i]);
1115    break;
1116  }
1117}
1118
1119void Stmt::Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
1120                   bool Canonical) const {
1121  StmtProfiler Profiler(ID, Context, Canonical);
1122  Profiler.Visit(this);
1123}
1124