StmtProfile.cpp revision 4ca8ac2e61c37ddadf37024af86f3e1019af8532 
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
507  case OO_Plus:
508    if (S->getNumArgs() == 1) {
509      UnaryOp = UO_Plus;
510      return Stmt::UnaryOperatorClass;
511    }
512
513    BinaryOp = BO_Add;
514    return Stmt::BinaryOperatorClass;
515
516  case OO_Minus:
517    if (S->getNumArgs() == 1) {
518      UnaryOp = UO_Minus;
519      return Stmt::UnaryOperatorClass;
520    }
521
522    BinaryOp = BO_Sub;
523    return Stmt::BinaryOperatorClass;
524
525  case OO_Star:
526    if (S->getNumArgs() == 1) {
527      UnaryOp = UO_Minus;
528      return Stmt::UnaryOperatorClass;
529    }
530
531    BinaryOp = BO_Sub;
532    return Stmt::BinaryOperatorClass;
533
534  case OO_Slash:
535    BinaryOp = BO_Div;
536    return Stmt::BinaryOperatorClass;
537
538  case OO_Percent:
539    BinaryOp = BO_Rem;
540    return Stmt::BinaryOperatorClass;
541
542  case OO_Caret:
543    BinaryOp = BO_Xor;
544    return Stmt::BinaryOperatorClass;
545
546  case OO_Amp:
547    if (S->getNumArgs() == 1) {
548      UnaryOp = UO_AddrOf;
549      return Stmt::UnaryOperatorClass;
550    }
551
552    BinaryOp = BO_And;
553    return Stmt::BinaryOperatorClass;
554
555  case OO_Pipe:
556    BinaryOp = BO_Or;
557    return Stmt::BinaryOperatorClass;
558
559  case OO_Tilde:
560    UnaryOp = UO_Not;
561    return Stmt::UnaryOperatorClass;
562
563  case OO_Exclaim:
564    UnaryOp = UO_LNot;
565    return Stmt::UnaryOperatorClass;
566
567  case OO_Equal:
568    BinaryOp = BO_Assign;
569    return Stmt::BinaryOperatorClass;
570
571  case OO_Less:
572    BinaryOp = BO_LT;
573    return Stmt::BinaryOperatorClass;
574
575  case OO_Greater:
576    BinaryOp = BO_GT;
577    return Stmt::BinaryOperatorClass;
578
579  case OO_PlusEqual:
580    BinaryOp = BO_AddAssign;
581    return Stmt::CompoundAssignOperatorClass;
582
583  case OO_MinusEqual:
584    BinaryOp = BO_SubAssign;
585    return Stmt::CompoundAssignOperatorClass;
586
587  case OO_StarEqual:
588    BinaryOp = BO_MulAssign;
589    return Stmt::CompoundAssignOperatorClass;
590
591  case OO_SlashEqual:
592    BinaryOp = BO_DivAssign;
593    return Stmt::CompoundAssignOperatorClass;
594
595  case OO_PercentEqual:
596    BinaryOp = BO_RemAssign;
597    return Stmt::CompoundAssignOperatorClass;
598
599  case OO_CaretEqual:
600    BinaryOp = BO_XorAssign;
601    return Stmt::CompoundAssignOperatorClass;
602
603  case OO_AmpEqual:
604    BinaryOp = BO_AndAssign;
605    return Stmt::CompoundAssignOperatorClass;
606
607  case OO_PipeEqual:
608    BinaryOp = BO_OrAssign;
609    return Stmt::CompoundAssignOperatorClass;
610
611  case OO_LessLess:
612    BinaryOp = BO_Shl;
613    return Stmt::BinaryOperatorClass;
614
615  case OO_GreaterGreater:
616    BinaryOp = BO_Shr;
617    return Stmt::BinaryOperatorClass;
618
619  case OO_LessLessEqual:
620    BinaryOp = BO_ShlAssign;
621    return Stmt::CompoundAssignOperatorClass;
622
623  case OO_GreaterGreaterEqual:
624    BinaryOp = BO_ShrAssign;
625    return Stmt::CompoundAssignOperatorClass;
626
627  case OO_EqualEqual:
628    BinaryOp = BO_EQ;
629    return Stmt::BinaryOperatorClass;
630
631  case OO_ExclaimEqual:
632    BinaryOp = BO_NE;
633    return Stmt::BinaryOperatorClass;
634
635  case OO_LessEqual:
636    BinaryOp = BO_LE;
637    return Stmt::BinaryOperatorClass;
638
639  case OO_GreaterEqual:
640    BinaryOp = BO_GE;
641    return Stmt::BinaryOperatorClass;
642
643  case OO_AmpAmp:
644    BinaryOp = BO_LAnd;
645    return Stmt::BinaryOperatorClass;
646
647  case OO_PipePipe:
648    BinaryOp = BO_LOr;
649    return Stmt::BinaryOperatorClass;
650
651  case OO_PlusPlus:
652    UnaryOp = S->getNumArgs() == 1? UO_PreInc
653                                  : UO_PostInc;
654    return Stmt::UnaryOperatorClass;
655
656  case OO_MinusMinus:
657    UnaryOp = S->getNumArgs() == 1? UO_PreDec
658                                  : UO_PostDec;
659    return Stmt::UnaryOperatorClass;
660
661  case OO_Comma:
662    BinaryOp = BO_Comma;
663    return Stmt::BinaryOperatorClass;
664
665
666  case OO_ArrowStar:
667    BinaryOp = BO_PtrMemI;
668    return Stmt::BinaryOperatorClass;
669
670  case OO_Subscript:
671    return Stmt::ArraySubscriptExprClass;
672  }
673
674  llvm_unreachable("Invalid overloaded operator expression");
675}
676
677
678void StmtProfiler::VisitCXXOperatorCallExpr(const CXXOperatorCallExpr *S) {
679  if (S->isTypeDependent()) {
680    // Type-dependent operator calls are profiled like their underlying
681    // syntactic operator.
682    UnaryOperatorKind UnaryOp = UO_Extension;
683    BinaryOperatorKind BinaryOp = BO_Comma;
684    Stmt::StmtClass SC = DecodeOperatorCall(S, UnaryOp, BinaryOp);
685
686    ID.AddInteger(SC);
687    for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
688      Visit(S->getArg(I));
689    if (SC == Stmt::UnaryOperatorClass)
690      ID.AddInteger(UnaryOp);
691    else if (SC == Stmt::BinaryOperatorClass ||
692             SC == Stmt::CompoundAssignOperatorClass)
693      ID.AddInteger(BinaryOp);
694    else
695      assert(SC == Stmt::ArraySubscriptExprClass);
696
697    return;
698  }
699
700  VisitCallExpr(S);
701  ID.AddInteger(S->getOperator());
702}
703
704void StmtProfiler::VisitCXXMemberCallExpr(const CXXMemberCallExpr *S) {
705  VisitCallExpr(S);
706}
707
708void StmtProfiler::VisitCUDAKernelCallExpr(const CUDAKernelCallExpr *S) {
709  VisitCallExpr(S);
710}
711
712void StmtProfiler::VisitAsTypeExpr(const AsTypeExpr *S) {
713  VisitExpr(S);
714}
715
716void StmtProfiler::VisitCXXNamedCastExpr(const CXXNamedCastExpr *S) {
717  VisitExplicitCastExpr(S);
718}
719
720void StmtProfiler::VisitCXXStaticCastExpr(const CXXStaticCastExpr *S) {
721  VisitCXXNamedCastExpr(S);
722}
723
724void StmtProfiler::VisitCXXDynamicCastExpr(const CXXDynamicCastExpr *S) {
725  VisitCXXNamedCastExpr(S);
726}
727
728void
729StmtProfiler::VisitCXXReinterpretCastExpr(const CXXReinterpretCastExpr *S) {
730  VisitCXXNamedCastExpr(S);
731}
732
733void StmtProfiler::VisitCXXConstCastExpr(const CXXConstCastExpr *S) {
734  VisitCXXNamedCastExpr(S);
735}
736
737void StmtProfiler::VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *S) {
738  VisitExpr(S);
739  ID.AddBoolean(S->getValue());
740}
741
742void StmtProfiler::VisitCXXNullPtrLiteralExpr(const CXXNullPtrLiteralExpr *S) {
743  VisitExpr(S);
744}
745
746void StmtProfiler::VisitCXXTypeidExpr(const CXXTypeidExpr *S) {
747  VisitExpr(S);
748  if (S->isTypeOperand())
749    VisitType(S->getTypeOperand());
750}
751
752void StmtProfiler::VisitCXXUuidofExpr(const CXXUuidofExpr *S) {
753  VisitExpr(S);
754  if (S->isTypeOperand())
755    VisitType(S->getTypeOperand());
756}
757
758void StmtProfiler::VisitCXXThisExpr(const CXXThisExpr *S) {
759  VisitExpr(S);
760}
761
762void StmtProfiler::VisitCXXThrowExpr(const CXXThrowExpr *S) {
763  VisitExpr(S);
764}
765
766void StmtProfiler::VisitCXXDefaultArgExpr(const CXXDefaultArgExpr *S) {
767  VisitExpr(S);
768  VisitDecl(S->getParam());
769}
770
771void StmtProfiler::VisitCXXBindTemporaryExpr(const CXXBindTemporaryExpr *S) {
772  VisitExpr(S);
773  VisitDecl(
774         const_cast<CXXDestructorDecl *>(S->getTemporary()->getDestructor()));
775}
776
777void StmtProfiler::VisitCXXConstructExpr(const CXXConstructExpr *S) {
778  VisitExpr(S);
779  VisitDecl(S->getConstructor());
780  ID.AddBoolean(S->isElidable());
781}
782
783void StmtProfiler::VisitCXXFunctionalCastExpr(const CXXFunctionalCastExpr *S) {
784  VisitExplicitCastExpr(S);
785}
786
787void
788StmtProfiler::VisitCXXTemporaryObjectExpr(const CXXTemporaryObjectExpr *S) {
789  VisitCXXConstructExpr(S);
790}
791
792void
793StmtProfiler::VisitLambdaExpr(const LambdaExpr *S) {
794  VisitExpr(S);
795  for (LambdaExpr::capture_iterator C = S->explicit_capture_begin(),
796                                 CEnd = S->explicit_capture_end();
797       C != CEnd; ++C) {
798    ID.AddInteger(C->getCaptureKind());
799    if (C->capturesVariable()) {
800      VisitDecl(C->getCapturedVar());
801      ID.AddBoolean(C->isPackExpansion());
802    }
803  }
804  // Note: If we actually needed to be able to match lambda
805  // expressions, we would have to consider parameters and return type
806  // here, among other things.
807  VisitStmt(S->getBody());
808}
809
810void
811StmtProfiler::VisitCXXScalarValueInitExpr(const CXXScalarValueInitExpr *S) {
812  VisitExpr(S);
813}
814
815void StmtProfiler::VisitCXXDeleteExpr(const CXXDeleteExpr *S) {
816  VisitExpr(S);
817  ID.AddBoolean(S->isGlobalDelete());
818  ID.AddBoolean(S->isArrayForm());
819  VisitDecl(S->getOperatorDelete());
820}
821
822
823void StmtProfiler::VisitCXXNewExpr(const CXXNewExpr *S) {
824  VisitExpr(S);
825  VisitType(S->getAllocatedType());
826  VisitDecl(S->getOperatorNew());
827  VisitDecl(S->getOperatorDelete());
828  ID.AddBoolean(S->isArray());
829  ID.AddInteger(S->getNumPlacementArgs());
830  ID.AddBoolean(S->isGlobalNew());
831  ID.AddBoolean(S->isParenTypeId());
832  ID.AddInteger(S->getInitializationStyle());
833}
834
835void
836StmtProfiler::VisitCXXPseudoDestructorExpr(const CXXPseudoDestructorExpr *S) {
837  VisitExpr(S);
838  ID.AddBoolean(S->isArrow());
839  VisitNestedNameSpecifier(S->getQualifier());
840  VisitType(S->getDestroyedType());
841}
842
843void StmtProfiler::VisitOverloadExpr(const OverloadExpr *S) {
844  VisitExpr(S);
845  VisitNestedNameSpecifier(S->getQualifier());
846  VisitName(S->getName());
847  ID.AddBoolean(S->hasExplicitTemplateArgs());
848  if (S->hasExplicitTemplateArgs())
849    VisitTemplateArguments(S->getExplicitTemplateArgs().getTemplateArgs(),
850                           S->getExplicitTemplateArgs().NumTemplateArgs);
851}
852
853void
854StmtProfiler::VisitUnresolvedLookupExpr(const UnresolvedLookupExpr *S) {
855  VisitOverloadExpr(S);
856}
857
858void StmtProfiler::VisitUnaryTypeTraitExpr(const UnaryTypeTraitExpr *S) {
859  VisitExpr(S);
860  ID.AddInteger(S->getTrait());
861  VisitType(S->getQueriedType());
862}
863
864void StmtProfiler::VisitBinaryTypeTraitExpr(const BinaryTypeTraitExpr *S) {
865  VisitExpr(S);
866  ID.AddInteger(S->getTrait());
867  VisitType(S->getLhsType());
868  VisitType(S->getRhsType());
869}
870
871void StmtProfiler::VisitTypeTraitExpr(const TypeTraitExpr *S) {
872  VisitExpr(S);
873  ID.AddInteger(S->getTrait());
874  ID.AddInteger(S->getNumArgs());
875  for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
876    VisitType(S->getArg(I)->getType());
877}
878
879void StmtProfiler::VisitArrayTypeTraitExpr(const ArrayTypeTraitExpr *S) {
880  VisitExpr(S);
881  ID.AddInteger(S->getTrait());
882  VisitType(S->getQueriedType());
883}
884
885void StmtProfiler::VisitExpressionTraitExpr(const ExpressionTraitExpr *S) {
886  VisitExpr(S);
887  ID.AddInteger(S->getTrait());
888  VisitExpr(S->getQueriedExpression());
889}
890
891void StmtProfiler::VisitDependentScopeDeclRefExpr(
892    const DependentScopeDeclRefExpr *S) {
893  VisitExpr(S);
894  VisitName(S->getDeclName());
895  VisitNestedNameSpecifier(S->getQualifier());
896  ID.AddBoolean(S->hasExplicitTemplateArgs());
897  if (S->hasExplicitTemplateArgs())
898    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
899}
900
901void StmtProfiler::VisitExprWithCleanups(const ExprWithCleanups *S) {
902  VisitExpr(S);
903}
904
905void StmtProfiler::VisitCXXUnresolvedConstructExpr(
906    const CXXUnresolvedConstructExpr *S) {
907  VisitExpr(S);
908  VisitType(S->getTypeAsWritten());
909}
910
911void StmtProfiler::VisitCXXDependentScopeMemberExpr(
912    const CXXDependentScopeMemberExpr *S) {
913  ID.AddBoolean(S->isImplicitAccess());
914  if (!S->isImplicitAccess()) {
915    VisitExpr(S);
916    ID.AddBoolean(S->isArrow());
917  }
918  VisitNestedNameSpecifier(S->getQualifier());
919  VisitName(S->getMember());
920  ID.AddBoolean(S->hasExplicitTemplateArgs());
921  if (S->hasExplicitTemplateArgs())
922    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
923}
924
925void StmtProfiler::VisitUnresolvedMemberExpr(const UnresolvedMemberExpr *S) {
926  ID.AddBoolean(S->isImplicitAccess());
927  if (!S->isImplicitAccess()) {
928    VisitExpr(S);
929    ID.AddBoolean(S->isArrow());
930  }
931  VisitNestedNameSpecifier(S->getQualifier());
932  VisitName(S->getMemberName());
933  ID.AddBoolean(S->hasExplicitTemplateArgs());
934  if (S->hasExplicitTemplateArgs())
935    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
936}
937
938void StmtProfiler::VisitCXXNoexceptExpr(const CXXNoexceptExpr *S) {
939  VisitExpr(S);
940}
941
942void StmtProfiler::VisitPackExpansionExpr(const PackExpansionExpr *S) {
943  VisitExpr(S);
944}
945
946void StmtProfiler::VisitSizeOfPackExpr(const SizeOfPackExpr *S) {
947  VisitExpr(S);
948  VisitDecl(S->getPack());
949}
950
951void StmtProfiler::VisitSubstNonTypeTemplateParmPackExpr(
952    const SubstNonTypeTemplateParmPackExpr *S) {
953  VisitExpr(S);
954  VisitDecl(S->getParameterPack());
955  VisitTemplateArgument(S->getArgumentPack());
956}
957
958void StmtProfiler::VisitSubstNonTypeTemplateParmExpr(
959    const SubstNonTypeTemplateParmExpr *E) {
960  // Profile exactly as the replacement expression.
961  Visit(E->getReplacement());
962}
963
964void StmtProfiler::VisitMaterializeTemporaryExpr(
965                                           const MaterializeTemporaryExpr *S) {
966  VisitExpr(S);
967}
968
969void StmtProfiler::VisitOpaqueValueExpr(const OpaqueValueExpr *E) {
970  VisitExpr(E);
971}
972
973void StmtProfiler::VisitObjCStringLiteral(const ObjCStringLiteral *S) {
974  VisitExpr(S);
975}
976
977void StmtProfiler::VisitObjCEncodeExpr(const ObjCEncodeExpr *S) {
978  VisitExpr(S);
979  VisitType(S->getEncodedType());
980}
981
982void StmtProfiler::VisitObjCSelectorExpr(const ObjCSelectorExpr *S) {
983  VisitExpr(S);
984  VisitName(S->getSelector());
985}
986
987void StmtProfiler::VisitObjCProtocolExpr(const ObjCProtocolExpr *S) {
988  VisitExpr(S);
989  VisitDecl(S->getProtocol());
990}
991
992void StmtProfiler::VisitObjCIvarRefExpr(const ObjCIvarRefExpr *S) {
993  VisitExpr(S);
994  VisitDecl(S->getDecl());
995  ID.AddBoolean(S->isArrow());
996  ID.AddBoolean(S->isFreeIvar());
997}
998
999void StmtProfiler::VisitObjCPropertyRefExpr(const ObjCPropertyRefExpr *S) {
1000  VisitExpr(S);
1001  if (S->isImplicitProperty()) {
1002    VisitDecl(S->getImplicitPropertyGetter());
1003    VisitDecl(S->getImplicitPropertySetter());
1004  } else {
1005    VisitDecl(S->getExplicitProperty());
1006  }
1007  if (S->isSuperReceiver()) {
1008    ID.AddBoolean(S->isSuperReceiver());
1009    VisitType(S->getSuperReceiverType());
1010  }
1011}
1012
1013void StmtProfiler::VisitObjCMessageExpr(const ObjCMessageExpr *S) {
1014  VisitExpr(S);
1015  VisitName(S->getSelector());
1016  VisitDecl(S->getMethodDecl());
1017}
1018
1019void StmtProfiler::VisitObjCIsaExpr(const ObjCIsaExpr *S) {
1020  VisitExpr(S);
1021  ID.AddBoolean(S->isArrow());
1022}
1023
1024void StmtProfiler::VisitObjCIndirectCopyRestoreExpr(
1025    const ObjCIndirectCopyRestoreExpr *S) {
1026  VisitExpr(S);
1027  ID.AddBoolean(S->shouldCopy());
1028}
1029
1030void StmtProfiler::VisitObjCBridgedCastExpr(const ObjCBridgedCastExpr *S) {
1031  VisitExplicitCastExpr(S);
1032  ID.AddBoolean(S->getBridgeKind());
1033}
1034
1035void StmtProfiler::VisitDecl(const Decl *D) {
1036  ID.AddInteger(D? D->getKind() : 0);
1037
1038  if (Canonical && D) {
1039    if (const NonTypeTemplateParmDecl *NTTP =
1040          dyn_cast<NonTypeTemplateParmDecl>(D)) {
1041      ID.AddInteger(NTTP->getDepth());
1042      ID.AddInteger(NTTP->getIndex());
1043      ID.AddBoolean(NTTP->isParameterPack());
1044      VisitType(NTTP->getType());
1045      return;
1046    }
1047
1048    if (const ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) {
1049      // The Itanium C++ ABI uses the type, scope depth, and scope
1050      // index of a parameter when mangling expressions that involve
1051      // function parameters, so we will use the parameter's type for
1052      // establishing function parameter identity. That way, our
1053      // definition of "equivalent" (per C++ [temp.over.link]) is at
1054      // least as strong as the definition of "equivalent" used for
1055      // name mangling.
1056      VisitType(Parm->getType());
1057      ID.AddInteger(Parm->getFunctionScopeDepth());
1058      ID.AddInteger(Parm->getFunctionScopeIndex());
1059      return;
1060    }
1061
1062    if (const TemplateTemplateParmDecl *TTP =
1063          dyn_cast<TemplateTemplateParmDecl>(D)) {
1064      ID.AddInteger(TTP->getDepth());
1065      ID.AddInteger(TTP->getIndex());
1066      ID.AddBoolean(TTP->isParameterPack());
1067      return;
1068    }
1069  }
1070
1071  ID.AddPointer(D? D->getCanonicalDecl() : 0);
1072}
1073
1074void StmtProfiler::VisitType(QualType T) {
1075  if (Canonical)
1076    T = Context.getCanonicalType(T);
1077
1078  ID.AddPointer(T.getAsOpaquePtr());
1079}
1080
1081void StmtProfiler::VisitName(DeclarationName Name) {
1082  ID.AddPointer(Name.getAsOpaquePtr());
1083}
1084
1085void StmtProfiler::VisitNestedNameSpecifier(NestedNameSpecifier *NNS) {
1086  if (Canonical)
1087    NNS = Context.getCanonicalNestedNameSpecifier(NNS);
1088  ID.AddPointer(NNS);
1089}
1090
1091void StmtProfiler::VisitTemplateName(TemplateName Name) {
1092  if (Canonical)
1093    Name = Context.getCanonicalTemplateName(Name);
1094
1095  Name.Profile(ID);
1096}
1097
1098void StmtProfiler::VisitTemplateArguments(const TemplateArgumentLoc *Args,
1099                                          unsigned NumArgs) {
1100  ID.AddInteger(NumArgs);
1101  for (unsigned I = 0; I != NumArgs; ++I)
1102    VisitTemplateArgument(Args[I].getArgument());
1103}
1104
1105void StmtProfiler::VisitTemplateArgument(const TemplateArgument &Arg) {
1106  // Mostly repetitive with TemplateArgument::Profile!
1107  ID.AddInteger(Arg.getKind());
1108  switch (Arg.getKind()) {
1109  case TemplateArgument::Null:
1110    break;
1111
1112  case TemplateArgument::Type:
1113    VisitType(Arg.getAsType());
1114    break;
1115
1116  case TemplateArgument::Template:
1117  case TemplateArgument::TemplateExpansion:
1118    VisitTemplateName(Arg.getAsTemplateOrTemplatePattern());
1119    break;
1120
1121  case TemplateArgument::Declaration:
1122    VisitDecl(Arg.getAsDecl());
1123    break;
1124
1125  case TemplateArgument::Integral:
1126    Arg.getAsIntegral()->Profile(ID);
1127    VisitType(Arg.getIntegralType());
1128    break;
1129
1130  case TemplateArgument::Expression:
1131    Visit(Arg.getAsExpr());
1132    break;
1133
1134  case TemplateArgument::Pack:
1135    const TemplateArgument *Pack = Arg.pack_begin();
1136    for (unsigned i = 0, e = Arg.pack_size(); i != e; ++i)
1137      VisitTemplateArgument(Pack[i]);
1138    break;
1139  }
1140}
1141
1142void Stmt::Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
1143                   bool Canonical) const {
1144  StmtProfiler Profiler(ID, Context, Canonical);
1145  Profiler.Visit(this);
1146}
1147