StmtProfile.cpp revision fe16aa31fdfaad4c38aed443d853af293714f1c4 
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    if (*C)
74      Visit(*C);
75    else
76      ID.AddInteger(0);
77  }
78}
79
80void StmtProfiler::VisitDeclStmt(const DeclStmt *S) {
81  VisitStmt(S);
82  for (DeclStmt::const_decl_iterator D = S->decl_begin(), DEnd = S->decl_end();
83       D != DEnd; ++D)
84    VisitDecl(*D);
85}
86
87void StmtProfiler::VisitNullStmt(const NullStmt *S) {
88  VisitStmt(S);
89}
90
91void StmtProfiler::VisitCompoundStmt(const CompoundStmt *S) {
92  VisitStmt(S);
93}
94
95void StmtProfiler::VisitSwitchCase(const SwitchCase *S) {
96  VisitStmt(S);
97}
98
99void StmtProfiler::VisitCaseStmt(const CaseStmt *S) {
100  VisitStmt(S);
101}
102
103void StmtProfiler::VisitDefaultStmt(const DefaultStmt *S) {
104  VisitStmt(S);
105}
106
107void StmtProfiler::VisitLabelStmt(const LabelStmt *S) {
108  VisitStmt(S);
109  VisitDecl(S->getDecl());
110}
111
112void StmtProfiler::VisitAttributedStmt(const AttributedStmt *S) {
113  VisitStmt(S);
114  // TODO: maybe visit attributes?
115}
116
117void StmtProfiler::VisitIfStmt(const IfStmt *S) {
118  VisitStmt(S);
119  VisitDecl(S->getConditionVariable());
120}
121
122void StmtProfiler::VisitSwitchStmt(const SwitchStmt *S) {
123  VisitStmt(S);
124  VisitDecl(S->getConditionVariable());
125}
126
127void StmtProfiler::VisitWhileStmt(const WhileStmt *S) {
128  VisitStmt(S);
129  VisitDecl(S->getConditionVariable());
130}
131
132void StmtProfiler::VisitDoStmt(const DoStmt *S) {
133  VisitStmt(S);
134}
135
136void StmtProfiler::VisitForStmt(const ForStmt *S) {
137  VisitStmt(S);
138}
139
140void StmtProfiler::VisitGotoStmt(const GotoStmt *S) {
141  VisitStmt(S);
142  VisitDecl(S->getLabel());
143}
144
145void StmtProfiler::VisitIndirectGotoStmt(const IndirectGotoStmt *S) {
146  VisitStmt(S);
147}
148
149void StmtProfiler::VisitContinueStmt(const ContinueStmt *S) {
150  VisitStmt(S);
151}
152
153void StmtProfiler::VisitBreakStmt(const BreakStmt *S) {
154  VisitStmt(S);
155}
156
157void StmtProfiler::VisitReturnStmt(const ReturnStmt *S) {
158  VisitStmt(S);
159}
160
161void 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
181void StmtProfiler::VisitMSAsmStmt(const MSAsmStmt *S) {
182  // FIXME: Implement MS style inline asm statement profiler.
183  VisitStmt(S);
184}
185
186void StmtProfiler::VisitCXXCatchStmt(const CXXCatchStmt *S) {
187  VisitStmt(S);
188  VisitType(S->getCaughtType());
189}
190
191void StmtProfiler::VisitCXXTryStmt(const CXXTryStmt *S) {
192  VisitStmt(S);
193}
194
195void StmtProfiler::VisitCXXForRangeStmt(const CXXForRangeStmt *S) {
196  VisitStmt(S);
197}
198
199void 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
206void StmtProfiler::VisitSEHTryStmt(const SEHTryStmt *S) {
207  VisitStmt(S);
208}
209
210void StmtProfiler::VisitSEHFinallyStmt(const SEHFinallyStmt *S) {
211  VisitStmt(S);
212}
213
214void StmtProfiler::VisitSEHExceptStmt(const SEHExceptStmt *S) {
215  VisitStmt(S);
216}
217
218void StmtProfiler::VisitCapturedStmt(const CapturedStmt *S) {
219  VisitStmt(S);
220}
221
222void StmtProfiler::VisitObjCForCollectionStmt(const ObjCForCollectionStmt *S) {
223  VisitStmt(S);
224}
225
226void StmtProfiler::VisitObjCAtCatchStmt(const ObjCAtCatchStmt *S) {
227  VisitStmt(S);
228  ID.AddBoolean(S->hasEllipsis());
229  if (S->getCatchParamDecl())
230    VisitType(S->getCatchParamDecl()->getType());
231}
232
233void StmtProfiler::VisitObjCAtFinallyStmt(const ObjCAtFinallyStmt *S) {
234  VisitStmt(S);
235}
236
237void StmtProfiler::VisitObjCAtTryStmt(const ObjCAtTryStmt *S) {
238  VisitStmt(S);
239}
240
241void
242StmtProfiler::VisitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt *S) {
243  VisitStmt(S);
244}
245
246void StmtProfiler::VisitObjCAtThrowStmt(const ObjCAtThrowStmt *S) {
247  VisitStmt(S);
248}
249
250void
251StmtProfiler::VisitObjCAutoreleasePoolStmt(const ObjCAutoreleasePoolStmt *S) {
252  VisitStmt(S);
253}
254
255namespace {
256class OMPClauseProfiler : public ConstOMPClauseVisitor<OMPClauseProfiler> {
257  StmtProfiler *Profiler;
258  /// \brief Process clauses with list of variables.
259  template <typename T>
260  void VisitOMPClauseList(T *Node);
261public:
262  OMPClauseProfiler(StmtProfiler *P) : Profiler(P) { }
263#define OPENMP_CLAUSE(Name, Class)                                             \
264  void Visit##Class(const Class *C);
265#include "clang/Basic/OpenMPKinds.def"
266};
267
268void OMPClauseProfiler::VisitOMPDefaultClause(const OMPDefaultClause *C) { }
269
270template<typename T>
271void OMPClauseProfiler::VisitOMPClauseList(T *Node) {
272  for (typename T::varlist_const_iterator I = Node->varlist_begin(),
273                                          E = Node->varlist_end();
274         I != E; ++I)
275    Profiler->VisitStmt(*I);
276}
277
278void OMPClauseProfiler::VisitOMPPrivateClause(const OMPPrivateClause *C) {
279  VisitOMPClauseList(C);
280}
281void OMPClauseProfiler::VisitOMPSharedClause(const OMPSharedClause *C) {
282  VisitOMPClauseList(C);
283}
284}
285
286void
287StmtProfiler::VisitOMPParallelDirective(const OMPParallelDirective *S) {
288  VisitStmt(S);
289  OMPClauseProfiler P(this);
290  ArrayRef<OMPClause *> Clauses = S->clauses();
291  for (ArrayRef<OMPClause *>::iterator I = Clauses.begin(), E = Clauses.end();
292       I != E; ++I)
293    if (*I)
294      P.Visit(*I);
295}
296
297void StmtProfiler::VisitExpr(const Expr *S) {
298  VisitStmt(S);
299}
300
301void StmtProfiler::VisitDeclRefExpr(const DeclRefExpr *S) {
302  VisitExpr(S);
303  if (!Canonical)
304    VisitNestedNameSpecifier(S->getQualifier());
305  VisitDecl(S->getDecl());
306  if (!Canonical)
307    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
308}
309
310void StmtProfiler::VisitPredefinedExpr(const PredefinedExpr *S) {
311  VisitExpr(S);
312  ID.AddInteger(S->getIdentType());
313}
314
315void StmtProfiler::VisitIntegerLiteral(const IntegerLiteral *S) {
316  VisitExpr(S);
317  S->getValue().Profile(ID);
318}
319
320void StmtProfiler::VisitCharacterLiteral(const CharacterLiteral *S) {
321  VisitExpr(S);
322  ID.AddInteger(S->getKind());
323  ID.AddInteger(S->getValue());
324}
325
326void StmtProfiler::VisitFloatingLiteral(const FloatingLiteral *S) {
327  VisitExpr(S);
328  S->getValue().Profile(ID);
329  ID.AddBoolean(S->isExact());
330}
331
332void StmtProfiler::VisitImaginaryLiteral(const ImaginaryLiteral *S) {
333  VisitExpr(S);
334}
335
336void StmtProfiler::VisitStringLiteral(const StringLiteral *S) {
337  VisitExpr(S);
338  ID.AddString(S->getBytes());
339  ID.AddInteger(S->getKind());
340}
341
342void StmtProfiler::VisitParenExpr(const ParenExpr *S) {
343  VisitExpr(S);
344}
345
346void StmtProfiler::VisitParenListExpr(const ParenListExpr *S) {
347  VisitExpr(S);
348}
349
350void StmtProfiler::VisitUnaryOperator(const UnaryOperator *S) {
351  VisitExpr(S);
352  ID.AddInteger(S->getOpcode());
353}
354
355void StmtProfiler::VisitOffsetOfExpr(const OffsetOfExpr *S) {
356  VisitType(S->getTypeSourceInfo()->getType());
357  unsigned n = S->getNumComponents();
358  for (unsigned i = 0; i < n; ++i) {
359    const OffsetOfExpr::OffsetOfNode& ON = S->getComponent(i);
360    ID.AddInteger(ON.getKind());
361    switch (ON.getKind()) {
362    case OffsetOfExpr::OffsetOfNode::Array:
363      // Expressions handled below.
364      break;
365
366    case OffsetOfExpr::OffsetOfNode::Field:
367      VisitDecl(ON.getField());
368      break;
369
370    case OffsetOfExpr::OffsetOfNode::Identifier:
371      ID.AddPointer(ON.getFieldName());
372      break;
373
374    case OffsetOfExpr::OffsetOfNode::Base:
375      // These nodes are implicit, and therefore don't need profiling.
376      break;
377    }
378  }
379
380  VisitExpr(S);
381}
382
383void
384StmtProfiler::VisitUnaryExprOrTypeTraitExpr(const UnaryExprOrTypeTraitExpr *S) {
385  VisitExpr(S);
386  ID.AddInteger(S->getKind());
387  if (S->isArgumentType())
388    VisitType(S->getArgumentType());
389}
390
391void StmtProfiler::VisitArraySubscriptExpr(const ArraySubscriptExpr *S) {
392  VisitExpr(S);
393}
394
395void StmtProfiler::VisitCallExpr(const CallExpr *S) {
396  VisitExpr(S);
397}
398
399void StmtProfiler::VisitMemberExpr(const MemberExpr *S) {
400  VisitExpr(S);
401  VisitDecl(S->getMemberDecl());
402  if (!Canonical)
403    VisitNestedNameSpecifier(S->getQualifier());
404  ID.AddBoolean(S->isArrow());
405}
406
407void StmtProfiler::VisitCompoundLiteralExpr(const CompoundLiteralExpr *S) {
408  VisitExpr(S);
409  ID.AddBoolean(S->isFileScope());
410}
411
412void StmtProfiler::VisitCastExpr(const CastExpr *S) {
413  VisitExpr(S);
414}
415
416void StmtProfiler::VisitImplicitCastExpr(const ImplicitCastExpr *S) {
417  VisitCastExpr(S);
418  ID.AddInteger(S->getValueKind());
419}
420
421void StmtProfiler::VisitExplicitCastExpr(const ExplicitCastExpr *S) {
422  VisitCastExpr(S);
423  VisitType(S->getTypeAsWritten());
424}
425
426void StmtProfiler::VisitCStyleCastExpr(const CStyleCastExpr *S) {
427  VisitExplicitCastExpr(S);
428}
429
430void StmtProfiler::VisitBinaryOperator(const BinaryOperator *S) {
431  VisitExpr(S);
432  ID.AddInteger(S->getOpcode());
433}
434
435void
436StmtProfiler::VisitCompoundAssignOperator(const CompoundAssignOperator *S) {
437  VisitBinaryOperator(S);
438}
439
440void StmtProfiler::VisitConditionalOperator(const ConditionalOperator *S) {
441  VisitExpr(S);
442}
443
444void StmtProfiler::VisitBinaryConditionalOperator(
445    const BinaryConditionalOperator *S) {
446  VisitExpr(S);
447}
448
449void StmtProfiler::VisitAddrLabelExpr(const AddrLabelExpr *S) {
450  VisitExpr(S);
451  VisitDecl(S->getLabel());
452}
453
454void StmtProfiler::VisitStmtExpr(const StmtExpr *S) {
455  VisitExpr(S);
456}
457
458void StmtProfiler::VisitShuffleVectorExpr(const ShuffleVectorExpr *S) {
459  VisitExpr(S);
460}
461
462void StmtProfiler::VisitConvertVectorExpr(const ConvertVectorExpr *S) {
463  VisitExpr(S);
464}
465
466void StmtProfiler::VisitChooseExpr(const ChooseExpr *S) {
467  VisitExpr(S);
468}
469
470void StmtProfiler::VisitGNUNullExpr(const GNUNullExpr *S) {
471  VisitExpr(S);
472}
473
474void StmtProfiler::VisitVAArgExpr(const VAArgExpr *S) {
475  VisitExpr(S);
476}
477
478void StmtProfiler::VisitInitListExpr(const InitListExpr *S) {
479  if (S->getSyntacticForm()) {
480    VisitInitListExpr(S->getSyntacticForm());
481    return;
482  }
483
484  VisitExpr(S);
485}
486
487void StmtProfiler::VisitDesignatedInitExpr(const DesignatedInitExpr *S) {
488  VisitExpr(S);
489  ID.AddBoolean(S->usesGNUSyntax());
490  for (DesignatedInitExpr::const_designators_iterator D =
491         S->designators_begin(), DEnd = S->designators_end();
492       D != DEnd; ++D) {
493    if (D->isFieldDesignator()) {
494      ID.AddInteger(0);
495      VisitName(D->getFieldName());
496      continue;
497    }
498
499    if (D->isArrayDesignator()) {
500      ID.AddInteger(1);
501    } else {
502      assert(D->isArrayRangeDesignator());
503      ID.AddInteger(2);
504    }
505    ID.AddInteger(D->getFirstExprIndex());
506  }
507}
508
509void StmtProfiler::VisitImplicitValueInitExpr(const ImplicitValueInitExpr *S) {
510  VisitExpr(S);
511}
512
513void StmtProfiler::VisitExtVectorElementExpr(const ExtVectorElementExpr *S) {
514  VisitExpr(S);
515  VisitName(&S->getAccessor());
516}
517
518void StmtProfiler::VisitBlockExpr(const BlockExpr *S) {
519  VisitExpr(S);
520  VisitDecl(S->getBlockDecl());
521}
522
523void StmtProfiler::VisitGenericSelectionExpr(const GenericSelectionExpr *S) {
524  VisitExpr(S);
525  for (unsigned i = 0; i != S->getNumAssocs(); ++i) {
526    QualType T = S->getAssocType(i);
527    if (T.isNull())
528      ID.AddPointer(0);
529    else
530      VisitType(T);
531    VisitExpr(S->getAssocExpr(i));
532  }
533}
534
535void StmtProfiler::VisitPseudoObjectExpr(const PseudoObjectExpr *S) {
536  VisitExpr(S);
537  for (PseudoObjectExpr::const_semantics_iterator
538         i = S->semantics_begin(), e = S->semantics_end(); i != e; ++i)
539    // Normally, we would not profile the source expressions of OVEs.
540    if (const OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(*i))
541      Visit(OVE->getSourceExpr());
542}
543
544void StmtProfiler::VisitAtomicExpr(const AtomicExpr *S) {
545  VisitExpr(S);
546  ID.AddInteger(S->getOp());
547}
548
549static Stmt::StmtClass DecodeOperatorCall(const CXXOperatorCallExpr *S,
550                                          UnaryOperatorKind &UnaryOp,
551                                          BinaryOperatorKind &BinaryOp) {
552  switch (S->getOperator()) {
553  case OO_None:
554  case OO_New:
555  case OO_Delete:
556  case OO_Array_New:
557  case OO_Array_Delete:
558  case OO_Arrow:
559  case OO_Call:
560  case OO_Conditional:
561  case NUM_OVERLOADED_OPERATORS:
562    llvm_unreachable("Invalid operator call kind");
563
564  case OO_Plus:
565    if (S->getNumArgs() == 1) {
566      UnaryOp = UO_Plus;
567      return Stmt::UnaryOperatorClass;
568    }
569
570    BinaryOp = BO_Add;
571    return Stmt::BinaryOperatorClass;
572
573  case OO_Minus:
574    if (S->getNumArgs() == 1) {
575      UnaryOp = UO_Minus;
576      return Stmt::UnaryOperatorClass;
577    }
578
579    BinaryOp = BO_Sub;
580    return Stmt::BinaryOperatorClass;
581
582  case OO_Star:
583    if (S->getNumArgs() == 1) {
584      UnaryOp = UO_Minus;
585      return Stmt::UnaryOperatorClass;
586    }
587
588    BinaryOp = BO_Sub;
589    return Stmt::BinaryOperatorClass;
590
591  case OO_Slash:
592    BinaryOp = BO_Div;
593    return Stmt::BinaryOperatorClass;
594
595  case OO_Percent:
596    BinaryOp = BO_Rem;
597    return Stmt::BinaryOperatorClass;
598
599  case OO_Caret:
600    BinaryOp = BO_Xor;
601    return Stmt::BinaryOperatorClass;
602
603  case OO_Amp:
604    if (S->getNumArgs() == 1) {
605      UnaryOp = UO_AddrOf;
606      return Stmt::UnaryOperatorClass;
607    }
608
609    BinaryOp = BO_And;
610    return Stmt::BinaryOperatorClass;
611
612  case OO_Pipe:
613    BinaryOp = BO_Or;
614    return Stmt::BinaryOperatorClass;
615
616  case OO_Tilde:
617    UnaryOp = UO_Not;
618    return Stmt::UnaryOperatorClass;
619
620  case OO_Exclaim:
621    UnaryOp = UO_LNot;
622    return Stmt::UnaryOperatorClass;
623
624  case OO_Equal:
625    BinaryOp = BO_Assign;
626    return Stmt::BinaryOperatorClass;
627
628  case OO_Less:
629    BinaryOp = BO_LT;
630    return Stmt::BinaryOperatorClass;
631
632  case OO_Greater:
633    BinaryOp = BO_GT;
634    return Stmt::BinaryOperatorClass;
635
636  case OO_PlusEqual:
637    BinaryOp = BO_AddAssign;
638    return Stmt::CompoundAssignOperatorClass;
639
640  case OO_MinusEqual:
641    BinaryOp = BO_SubAssign;
642    return Stmt::CompoundAssignOperatorClass;
643
644  case OO_StarEqual:
645    BinaryOp = BO_MulAssign;
646    return Stmt::CompoundAssignOperatorClass;
647
648  case OO_SlashEqual:
649    BinaryOp = BO_DivAssign;
650    return Stmt::CompoundAssignOperatorClass;
651
652  case OO_PercentEqual:
653    BinaryOp = BO_RemAssign;
654    return Stmt::CompoundAssignOperatorClass;
655
656  case OO_CaretEqual:
657    BinaryOp = BO_XorAssign;
658    return Stmt::CompoundAssignOperatorClass;
659
660  case OO_AmpEqual:
661    BinaryOp = BO_AndAssign;
662    return Stmt::CompoundAssignOperatorClass;
663
664  case OO_PipeEqual:
665    BinaryOp = BO_OrAssign;
666    return Stmt::CompoundAssignOperatorClass;
667
668  case OO_LessLess:
669    BinaryOp = BO_Shl;
670    return Stmt::BinaryOperatorClass;
671
672  case OO_GreaterGreater:
673    BinaryOp = BO_Shr;
674    return Stmt::BinaryOperatorClass;
675
676  case OO_LessLessEqual:
677    BinaryOp = BO_ShlAssign;
678    return Stmt::CompoundAssignOperatorClass;
679
680  case OO_GreaterGreaterEqual:
681    BinaryOp = BO_ShrAssign;
682    return Stmt::CompoundAssignOperatorClass;
683
684  case OO_EqualEqual:
685    BinaryOp = BO_EQ;
686    return Stmt::BinaryOperatorClass;
687
688  case OO_ExclaimEqual:
689    BinaryOp = BO_NE;
690    return Stmt::BinaryOperatorClass;
691
692  case OO_LessEqual:
693    BinaryOp = BO_LE;
694    return Stmt::BinaryOperatorClass;
695
696  case OO_GreaterEqual:
697    BinaryOp = BO_GE;
698    return Stmt::BinaryOperatorClass;
699
700  case OO_AmpAmp:
701    BinaryOp = BO_LAnd;
702    return Stmt::BinaryOperatorClass;
703
704  case OO_PipePipe:
705    BinaryOp = BO_LOr;
706    return Stmt::BinaryOperatorClass;
707
708  case OO_PlusPlus:
709    UnaryOp = S->getNumArgs() == 1? UO_PreInc
710                                  : UO_PostInc;
711    return Stmt::UnaryOperatorClass;
712
713  case OO_MinusMinus:
714    UnaryOp = S->getNumArgs() == 1? UO_PreDec
715                                  : UO_PostDec;
716    return Stmt::UnaryOperatorClass;
717
718  case OO_Comma:
719    BinaryOp = BO_Comma;
720    return Stmt::BinaryOperatorClass;
721
722
723  case OO_ArrowStar:
724    BinaryOp = BO_PtrMemI;
725    return Stmt::BinaryOperatorClass;
726
727  case OO_Subscript:
728    return Stmt::ArraySubscriptExprClass;
729  }
730
731  llvm_unreachable("Invalid overloaded operator expression");
732}
733
734
735void StmtProfiler::VisitCXXOperatorCallExpr(const CXXOperatorCallExpr *S) {
736  if (S->isTypeDependent()) {
737    // Type-dependent operator calls are profiled like their underlying
738    // syntactic operator.
739    UnaryOperatorKind UnaryOp = UO_Extension;
740    BinaryOperatorKind BinaryOp = BO_Comma;
741    Stmt::StmtClass SC = DecodeOperatorCall(S, UnaryOp, BinaryOp);
742
743    ID.AddInteger(SC);
744    for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
745      Visit(S->getArg(I));
746    if (SC == Stmt::UnaryOperatorClass)
747      ID.AddInteger(UnaryOp);
748    else if (SC == Stmt::BinaryOperatorClass ||
749             SC == Stmt::CompoundAssignOperatorClass)
750      ID.AddInteger(BinaryOp);
751    else
752      assert(SC == Stmt::ArraySubscriptExprClass);
753
754    return;
755  }
756
757  VisitCallExpr(S);
758  ID.AddInteger(S->getOperator());
759}
760
761void StmtProfiler::VisitCXXMemberCallExpr(const CXXMemberCallExpr *S) {
762  VisitCallExpr(S);
763}
764
765void StmtProfiler::VisitCUDAKernelCallExpr(const CUDAKernelCallExpr *S) {
766  VisitCallExpr(S);
767}
768
769void StmtProfiler::VisitAsTypeExpr(const AsTypeExpr *S) {
770  VisitExpr(S);
771}
772
773void StmtProfiler::VisitCXXNamedCastExpr(const CXXNamedCastExpr *S) {
774  VisitExplicitCastExpr(S);
775}
776
777void StmtProfiler::VisitCXXStaticCastExpr(const CXXStaticCastExpr *S) {
778  VisitCXXNamedCastExpr(S);
779}
780
781void StmtProfiler::VisitCXXDynamicCastExpr(const CXXDynamicCastExpr *S) {
782  VisitCXXNamedCastExpr(S);
783}
784
785void
786StmtProfiler::VisitCXXReinterpretCastExpr(const CXXReinterpretCastExpr *S) {
787  VisitCXXNamedCastExpr(S);
788}
789
790void StmtProfiler::VisitCXXConstCastExpr(const CXXConstCastExpr *S) {
791  VisitCXXNamedCastExpr(S);
792}
793
794void StmtProfiler::VisitUserDefinedLiteral(const UserDefinedLiteral *S) {
795  VisitCallExpr(S);
796}
797
798void StmtProfiler::VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *S) {
799  VisitExpr(S);
800  ID.AddBoolean(S->getValue());
801}
802
803void StmtProfiler::VisitCXXNullPtrLiteralExpr(const CXXNullPtrLiteralExpr *S) {
804  VisitExpr(S);
805}
806
807void StmtProfiler::VisitCXXStdInitializerListExpr(
808    const CXXStdInitializerListExpr *S) {
809  VisitExpr(S);
810}
811
812void StmtProfiler::VisitCXXTypeidExpr(const CXXTypeidExpr *S) {
813  VisitExpr(S);
814  if (S->isTypeOperand())
815    VisitType(S->getTypeOperandSourceInfo()->getType());
816}
817
818void StmtProfiler::VisitCXXUuidofExpr(const CXXUuidofExpr *S) {
819  VisitExpr(S);
820  if (S->isTypeOperand())
821    VisitType(S->getTypeOperandSourceInfo()->getType());
822}
823
824void StmtProfiler::VisitMSPropertyRefExpr(const MSPropertyRefExpr *S) {
825  VisitExpr(S);
826  VisitDecl(S->getPropertyDecl());
827}
828
829void StmtProfiler::VisitCXXThisExpr(const CXXThisExpr *S) {
830  VisitExpr(S);
831  ID.AddBoolean(S->isImplicit());
832}
833
834void StmtProfiler::VisitCXXThrowExpr(const CXXThrowExpr *S) {
835  VisitExpr(S);
836}
837
838void StmtProfiler::VisitCXXDefaultArgExpr(const CXXDefaultArgExpr *S) {
839  VisitExpr(S);
840  VisitDecl(S->getParam());
841}
842
843void StmtProfiler::VisitCXXDefaultInitExpr(const CXXDefaultInitExpr *S) {
844  VisitExpr(S);
845  VisitDecl(S->getField());
846}
847
848void StmtProfiler::VisitCXXBindTemporaryExpr(const CXXBindTemporaryExpr *S) {
849  VisitExpr(S);
850  VisitDecl(
851         const_cast<CXXDestructorDecl *>(S->getTemporary()->getDestructor()));
852}
853
854void StmtProfiler::VisitCXXConstructExpr(const CXXConstructExpr *S) {
855  VisitExpr(S);
856  VisitDecl(S->getConstructor());
857  ID.AddBoolean(S->isElidable());
858}
859
860void StmtProfiler::VisitCXXFunctionalCastExpr(const CXXFunctionalCastExpr *S) {
861  VisitExplicitCastExpr(S);
862}
863
864void
865StmtProfiler::VisitCXXTemporaryObjectExpr(const CXXTemporaryObjectExpr *S) {
866  VisitCXXConstructExpr(S);
867}
868
869void
870StmtProfiler::VisitLambdaExpr(const LambdaExpr *S) {
871  VisitExpr(S);
872  for (LambdaExpr::capture_iterator C = S->explicit_capture_begin(),
873                                 CEnd = S->explicit_capture_end();
874       C != CEnd; ++C) {
875    ID.AddInteger(C->getCaptureKind());
876    switch (C->getCaptureKind()) {
877    case LCK_This:
878      break;
879    case LCK_ByRef:
880    case LCK_ByCopy:
881      VisitDecl(C->getCapturedVar());
882      ID.AddBoolean(C->isPackExpansion());
883      break;
884    case LCK_Init:
885      VisitDecl(C->getInitCaptureField());
886      break;
887    }
888  }
889  // Note: If we actually needed to be able to match lambda
890  // expressions, we would have to consider parameters and return type
891  // here, among other things.
892  VisitStmt(S->getBody());
893}
894
895void
896StmtProfiler::VisitCXXScalarValueInitExpr(const CXXScalarValueInitExpr *S) {
897  VisitExpr(S);
898}
899
900void StmtProfiler::VisitCXXDeleteExpr(const CXXDeleteExpr *S) {
901  VisitExpr(S);
902  ID.AddBoolean(S->isGlobalDelete());
903  ID.AddBoolean(S->isArrayForm());
904  VisitDecl(S->getOperatorDelete());
905}
906
907
908void StmtProfiler::VisitCXXNewExpr(const CXXNewExpr *S) {
909  VisitExpr(S);
910  VisitType(S->getAllocatedType());
911  VisitDecl(S->getOperatorNew());
912  VisitDecl(S->getOperatorDelete());
913  ID.AddBoolean(S->isArray());
914  ID.AddInteger(S->getNumPlacementArgs());
915  ID.AddBoolean(S->isGlobalNew());
916  ID.AddBoolean(S->isParenTypeId());
917  ID.AddInteger(S->getInitializationStyle());
918}
919
920void
921StmtProfiler::VisitCXXPseudoDestructorExpr(const CXXPseudoDestructorExpr *S) {
922  VisitExpr(S);
923  ID.AddBoolean(S->isArrow());
924  VisitNestedNameSpecifier(S->getQualifier());
925  ID.AddBoolean(S->getScopeTypeInfo() != 0);
926  if (S->getScopeTypeInfo())
927    VisitType(S->getScopeTypeInfo()->getType());
928  ID.AddBoolean(S->getDestroyedTypeInfo() != 0);
929  if (S->getDestroyedTypeInfo())
930    VisitType(S->getDestroyedType());
931  else
932    ID.AddPointer(S->getDestroyedTypeIdentifier());
933}
934
935void StmtProfiler::VisitOverloadExpr(const OverloadExpr *S) {
936  VisitExpr(S);
937  VisitNestedNameSpecifier(S->getQualifier());
938  VisitName(S->getName());
939  ID.AddBoolean(S->hasExplicitTemplateArgs());
940  if (S->hasExplicitTemplateArgs())
941    VisitTemplateArguments(S->getExplicitTemplateArgs().getTemplateArgs(),
942                           S->getExplicitTemplateArgs().NumTemplateArgs);
943}
944
945void
946StmtProfiler::VisitUnresolvedLookupExpr(const UnresolvedLookupExpr *S) {
947  VisitOverloadExpr(S);
948}
949
950void StmtProfiler::VisitUnaryTypeTraitExpr(const UnaryTypeTraitExpr *S) {
951  VisitExpr(S);
952  ID.AddInteger(S->getTrait());
953  VisitType(S->getQueriedType());
954}
955
956void StmtProfiler::VisitBinaryTypeTraitExpr(const BinaryTypeTraitExpr *S) {
957  VisitExpr(S);
958  ID.AddInteger(S->getTrait());
959  VisitType(S->getLhsType());
960  VisitType(S->getRhsType());
961}
962
963void StmtProfiler::VisitTypeTraitExpr(const TypeTraitExpr *S) {
964  VisitExpr(S);
965  ID.AddInteger(S->getTrait());
966  ID.AddInteger(S->getNumArgs());
967  for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
968    VisitType(S->getArg(I)->getType());
969}
970
971void StmtProfiler::VisitArrayTypeTraitExpr(const ArrayTypeTraitExpr *S) {
972  VisitExpr(S);
973  ID.AddInteger(S->getTrait());
974  VisitType(S->getQueriedType());
975}
976
977void StmtProfiler::VisitExpressionTraitExpr(const ExpressionTraitExpr *S) {
978  VisitExpr(S);
979  ID.AddInteger(S->getTrait());
980  VisitExpr(S->getQueriedExpression());
981}
982
983void StmtProfiler::VisitDependentScopeDeclRefExpr(
984    const DependentScopeDeclRefExpr *S) {
985  VisitExpr(S);
986  VisitName(S->getDeclName());
987  VisitNestedNameSpecifier(S->getQualifier());
988  ID.AddBoolean(S->hasExplicitTemplateArgs());
989  if (S->hasExplicitTemplateArgs())
990    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
991}
992
993void StmtProfiler::VisitExprWithCleanups(const ExprWithCleanups *S) {
994  VisitExpr(S);
995}
996
997void StmtProfiler::VisitCXXUnresolvedConstructExpr(
998    const CXXUnresolvedConstructExpr *S) {
999  VisitExpr(S);
1000  VisitType(S->getTypeAsWritten());
1001}
1002
1003void StmtProfiler::VisitCXXDependentScopeMemberExpr(
1004    const CXXDependentScopeMemberExpr *S) {
1005  ID.AddBoolean(S->isImplicitAccess());
1006  if (!S->isImplicitAccess()) {
1007    VisitExpr(S);
1008    ID.AddBoolean(S->isArrow());
1009  }
1010  VisitNestedNameSpecifier(S->getQualifier());
1011  VisitName(S->getMember());
1012  ID.AddBoolean(S->hasExplicitTemplateArgs());
1013  if (S->hasExplicitTemplateArgs())
1014    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1015}
1016
1017void StmtProfiler::VisitUnresolvedMemberExpr(const UnresolvedMemberExpr *S) {
1018  ID.AddBoolean(S->isImplicitAccess());
1019  if (!S->isImplicitAccess()) {
1020    VisitExpr(S);
1021    ID.AddBoolean(S->isArrow());
1022  }
1023  VisitNestedNameSpecifier(S->getQualifier());
1024  VisitName(S->getMemberName());
1025  ID.AddBoolean(S->hasExplicitTemplateArgs());
1026  if (S->hasExplicitTemplateArgs())
1027    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
1028}
1029
1030void StmtProfiler::VisitCXXNoexceptExpr(const CXXNoexceptExpr *S) {
1031  VisitExpr(S);
1032}
1033
1034void StmtProfiler::VisitPackExpansionExpr(const PackExpansionExpr *S) {
1035  VisitExpr(S);
1036}
1037
1038void StmtProfiler::VisitSizeOfPackExpr(const SizeOfPackExpr *S) {
1039  VisitExpr(S);
1040  VisitDecl(S->getPack());
1041}
1042
1043void StmtProfiler::VisitSubstNonTypeTemplateParmPackExpr(
1044    const SubstNonTypeTemplateParmPackExpr *S) {
1045  VisitExpr(S);
1046  VisitDecl(S->getParameterPack());
1047  VisitTemplateArgument(S->getArgumentPack());
1048}
1049
1050void StmtProfiler::VisitSubstNonTypeTemplateParmExpr(
1051    const SubstNonTypeTemplateParmExpr *E) {
1052  // Profile exactly as the replacement expression.
1053  Visit(E->getReplacement());
1054}
1055
1056void StmtProfiler::VisitFunctionParmPackExpr(const FunctionParmPackExpr *S) {
1057  VisitExpr(S);
1058  VisitDecl(S->getParameterPack());
1059  ID.AddInteger(S->getNumExpansions());
1060  for (FunctionParmPackExpr::iterator I = S->begin(), E = S->end(); I != E; ++I)
1061    VisitDecl(*I);
1062}
1063
1064void StmtProfiler::VisitMaterializeTemporaryExpr(
1065                                           const MaterializeTemporaryExpr *S) {
1066  VisitExpr(S);
1067}
1068
1069void StmtProfiler::VisitOpaqueValueExpr(const OpaqueValueExpr *E) {
1070  VisitExpr(E);
1071}
1072
1073void StmtProfiler::VisitObjCStringLiteral(const ObjCStringLiteral *S) {
1074  VisitExpr(S);
1075}
1076
1077void StmtProfiler::VisitObjCBoxedExpr(const ObjCBoxedExpr *E) {
1078  VisitExpr(E);
1079}
1080
1081void StmtProfiler::VisitObjCArrayLiteral(const ObjCArrayLiteral *E) {
1082  VisitExpr(E);
1083}
1084
1085void StmtProfiler::VisitObjCDictionaryLiteral(const ObjCDictionaryLiteral *E) {
1086  VisitExpr(E);
1087}
1088
1089void StmtProfiler::VisitObjCEncodeExpr(const ObjCEncodeExpr *S) {
1090  VisitExpr(S);
1091  VisitType(S->getEncodedType());
1092}
1093
1094void StmtProfiler::VisitObjCSelectorExpr(const ObjCSelectorExpr *S) {
1095  VisitExpr(S);
1096  VisitName(S->getSelector());
1097}
1098
1099void StmtProfiler::VisitObjCProtocolExpr(const ObjCProtocolExpr *S) {
1100  VisitExpr(S);
1101  VisitDecl(S->getProtocol());
1102}
1103
1104void StmtProfiler::VisitObjCIvarRefExpr(const ObjCIvarRefExpr *S) {
1105  VisitExpr(S);
1106  VisitDecl(S->getDecl());
1107  ID.AddBoolean(S->isArrow());
1108  ID.AddBoolean(S->isFreeIvar());
1109}
1110
1111void StmtProfiler::VisitObjCPropertyRefExpr(const ObjCPropertyRefExpr *S) {
1112  VisitExpr(S);
1113  if (S->isImplicitProperty()) {
1114    VisitDecl(S->getImplicitPropertyGetter());
1115    VisitDecl(S->getImplicitPropertySetter());
1116  } else {
1117    VisitDecl(S->getExplicitProperty());
1118  }
1119  if (S->isSuperReceiver()) {
1120    ID.AddBoolean(S->isSuperReceiver());
1121    VisitType(S->getSuperReceiverType());
1122  }
1123}
1124
1125void StmtProfiler::VisitObjCSubscriptRefExpr(const ObjCSubscriptRefExpr *S) {
1126  VisitExpr(S);
1127  VisitDecl(S->getAtIndexMethodDecl());
1128  VisitDecl(S->setAtIndexMethodDecl());
1129}
1130
1131void StmtProfiler::VisitObjCMessageExpr(const ObjCMessageExpr *S) {
1132  VisitExpr(S);
1133  VisitName(S->getSelector());
1134  VisitDecl(S->getMethodDecl());
1135}
1136
1137void StmtProfiler::VisitObjCIsaExpr(const ObjCIsaExpr *S) {
1138  VisitExpr(S);
1139  ID.AddBoolean(S->isArrow());
1140}
1141
1142void StmtProfiler::VisitObjCBoolLiteralExpr(const ObjCBoolLiteralExpr *S) {
1143  VisitExpr(S);
1144  ID.AddBoolean(S->getValue());
1145}
1146
1147void StmtProfiler::VisitObjCIndirectCopyRestoreExpr(
1148    const ObjCIndirectCopyRestoreExpr *S) {
1149  VisitExpr(S);
1150  ID.AddBoolean(S->shouldCopy());
1151}
1152
1153void StmtProfiler::VisitObjCBridgedCastExpr(const ObjCBridgedCastExpr *S) {
1154  VisitExplicitCastExpr(S);
1155  ID.AddBoolean(S->getBridgeKind());
1156}
1157
1158void StmtProfiler::VisitDecl(const Decl *D) {
1159  ID.AddInteger(D? D->getKind() : 0);
1160
1161  if (Canonical && D) {
1162    if (const NonTypeTemplateParmDecl *NTTP =
1163          dyn_cast<NonTypeTemplateParmDecl>(D)) {
1164      ID.AddInteger(NTTP->getDepth());
1165      ID.AddInteger(NTTP->getIndex());
1166      ID.AddBoolean(NTTP->isParameterPack());
1167      VisitType(NTTP->getType());
1168      return;
1169    }
1170
1171    if (const ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) {
1172      // The Itanium C++ ABI uses the type, scope depth, and scope
1173      // index of a parameter when mangling expressions that involve
1174      // function parameters, so we will use the parameter's type for
1175      // establishing function parameter identity. That way, our
1176      // definition of "equivalent" (per C++ [temp.over.link]) is at
1177      // least as strong as the definition of "equivalent" used for
1178      // name mangling.
1179      VisitType(Parm->getType());
1180      ID.AddInteger(Parm->getFunctionScopeDepth());
1181      ID.AddInteger(Parm->getFunctionScopeIndex());
1182      return;
1183    }
1184
1185    if (const TemplateTypeParmDecl *TTP =
1186          dyn_cast<TemplateTypeParmDecl>(D)) {
1187      ID.AddInteger(TTP->getDepth());
1188      ID.AddInteger(TTP->getIndex());
1189      ID.AddBoolean(TTP->isParameterPack());
1190      return;
1191    }
1192
1193    if (const TemplateTemplateParmDecl *TTP =
1194          dyn_cast<TemplateTemplateParmDecl>(D)) {
1195      ID.AddInteger(TTP->getDepth());
1196      ID.AddInteger(TTP->getIndex());
1197      ID.AddBoolean(TTP->isParameterPack());
1198      return;
1199    }
1200  }
1201
1202  ID.AddPointer(D? D->getCanonicalDecl() : 0);
1203}
1204
1205void StmtProfiler::VisitType(QualType T) {
1206  if (Canonical)
1207    T = Context.getCanonicalType(T);
1208
1209  ID.AddPointer(T.getAsOpaquePtr());
1210}
1211
1212void StmtProfiler::VisitName(DeclarationName Name) {
1213  ID.AddPointer(Name.getAsOpaquePtr());
1214}
1215
1216void StmtProfiler::VisitNestedNameSpecifier(NestedNameSpecifier *NNS) {
1217  if (Canonical)
1218    NNS = Context.getCanonicalNestedNameSpecifier(NNS);
1219  ID.AddPointer(NNS);
1220}
1221
1222void StmtProfiler::VisitTemplateName(TemplateName Name) {
1223  if (Canonical)
1224    Name = Context.getCanonicalTemplateName(Name);
1225
1226  Name.Profile(ID);
1227}
1228
1229void StmtProfiler::VisitTemplateArguments(const TemplateArgumentLoc *Args,
1230                                          unsigned NumArgs) {
1231  ID.AddInteger(NumArgs);
1232  for (unsigned I = 0; I != NumArgs; ++I)
1233    VisitTemplateArgument(Args[I].getArgument());
1234}
1235
1236void StmtProfiler::VisitTemplateArgument(const TemplateArgument &Arg) {
1237  // Mostly repetitive with TemplateArgument::Profile!
1238  ID.AddInteger(Arg.getKind());
1239  switch (Arg.getKind()) {
1240  case TemplateArgument::Null:
1241    break;
1242
1243  case TemplateArgument::Type:
1244    VisitType(Arg.getAsType());
1245    break;
1246
1247  case TemplateArgument::Template:
1248  case TemplateArgument::TemplateExpansion:
1249    VisitTemplateName(Arg.getAsTemplateOrTemplatePattern());
1250    break;
1251
1252  case TemplateArgument::Declaration:
1253    VisitDecl(Arg.getAsDecl());
1254    break;
1255
1256  case TemplateArgument::NullPtr:
1257    VisitType(Arg.getNullPtrType());
1258    break;
1259
1260  case TemplateArgument::Integral:
1261    Arg.getAsIntegral().Profile(ID);
1262    VisitType(Arg.getIntegralType());
1263    break;
1264
1265  case TemplateArgument::Expression:
1266    Visit(Arg.getAsExpr());
1267    break;
1268
1269  case TemplateArgument::Pack:
1270    const TemplateArgument *Pack = Arg.pack_begin();
1271    for (unsigned i = 0, e = Arg.pack_size(); i != e; ++i)
1272      VisitTemplateArgument(Pack[i]);
1273    break;
1274  }
1275}
1276
1277void Stmt::Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
1278                   bool Canonical) const {
1279  StmtProfiler Profiler(ID, Context, Canonical);
1280  Profiler.Visit(this);
1281}
1282