StmtProfile.cpp revision 251662 
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
255void StmtProfiler::VisitExpr(const Expr *S) {
256  VisitStmt(S);
257}
258
259void StmtProfiler::VisitDeclRefExpr(const DeclRefExpr *S) {
260  VisitExpr(S);
261  if (!Canonical)
262    VisitNestedNameSpecifier(S->getQualifier());
263  VisitDecl(S->getDecl());
264  if (!Canonical)
265    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
266}
267
268void StmtProfiler::VisitPredefinedExpr(const PredefinedExpr *S) {
269  VisitExpr(S);
270  ID.AddInteger(S->getIdentType());
271}
272
273void StmtProfiler::VisitIntegerLiteral(const IntegerLiteral *S) {
274  VisitExpr(S);
275  S->getValue().Profile(ID);
276}
277
278void StmtProfiler::VisitCharacterLiteral(const CharacterLiteral *S) {
279  VisitExpr(S);
280  ID.AddInteger(S->getKind());
281  ID.AddInteger(S->getValue());
282}
283
284void StmtProfiler::VisitFloatingLiteral(const FloatingLiteral *S) {
285  VisitExpr(S);
286  S->getValue().Profile(ID);
287  ID.AddBoolean(S->isExact());
288}
289
290void StmtProfiler::VisitImaginaryLiteral(const ImaginaryLiteral *S) {
291  VisitExpr(S);
292}
293
294void StmtProfiler::VisitStringLiteral(const StringLiteral *S) {
295  VisitExpr(S);
296  ID.AddString(S->getBytes());
297  ID.AddInteger(S->getKind());
298}
299
300void StmtProfiler::VisitParenExpr(const ParenExpr *S) {
301  VisitExpr(S);
302}
303
304void StmtProfiler::VisitParenListExpr(const ParenListExpr *S) {
305  VisitExpr(S);
306}
307
308void StmtProfiler::VisitUnaryOperator(const UnaryOperator *S) {
309  VisitExpr(S);
310  ID.AddInteger(S->getOpcode());
311}
312
313void StmtProfiler::VisitOffsetOfExpr(const OffsetOfExpr *S) {
314  VisitType(S->getTypeSourceInfo()->getType());
315  unsigned n = S->getNumComponents();
316  for (unsigned i = 0; i < n; ++i) {
317    const OffsetOfExpr::OffsetOfNode& ON = S->getComponent(i);
318    ID.AddInteger(ON.getKind());
319    switch (ON.getKind()) {
320    case OffsetOfExpr::OffsetOfNode::Array:
321      // Expressions handled below.
322      break;
323
324    case OffsetOfExpr::OffsetOfNode::Field:
325      VisitDecl(ON.getField());
326      break;
327
328    case OffsetOfExpr::OffsetOfNode::Identifier:
329      ID.AddPointer(ON.getFieldName());
330      break;
331
332    case OffsetOfExpr::OffsetOfNode::Base:
333      // These nodes are implicit, and therefore don't need profiling.
334      break;
335    }
336  }
337
338  VisitExpr(S);
339}
340
341void
342StmtProfiler::VisitUnaryExprOrTypeTraitExpr(const UnaryExprOrTypeTraitExpr *S) {
343  VisitExpr(S);
344  ID.AddInteger(S->getKind());
345  if (S->isArgumentType())
346    VisitType(S->getArgumentType());
347}
348
349void StmtProfiler::VisitArraySubscriptExpr(const ArraySubscriptExpr *S) {
350  VisitExpr(S);
351}
352
353void StmtProfiler::VisitCallExpr(const CallExpr *S) {
354  VisitExpr(S);
355}
356
357void StmtProfiler::VisitMemberExpr(const MemberExpr *S) {
358  VisitExpr(S);
359  VisitDecl(S->getMemberDecl());
360  if (!Canonical)
361    VisitNestedNameSpecifier(S->getQualifier());
362  ID.AddBoolean(S->isArrow());
363}
364
365void StmtProfiler::VisitCompoundLiteralExpr(const CompoundLiteralExpr *S) {
366  VisitExpr(S);
367  ID.AddBoolean(S->isFileScope());
368}
369
370void StmtProfiler::VisitCastExpr(const CastExpr *S) {
371  VisitExpr(S);
372}
373
374void StmtProfiler::VisitImplicitCastExpr(const ImplicitCastExpr *S) {
375  VisitCastExpr(S);
376  ID.AddInteger(S->getValueKind());
377}
378
379void StmtProfiler::VisitExplicitCastExpr(const ExplicitCastExpr *S) {
380  VisitCastExpr(S);
381  VisitType(S->getTypeAsWritten());
382}
383
384void StmtProfiler::VisitCStyleCastExpr(const CStyleCastExpr *S) {
385  VisitExplicitCastExpr(S);
386}
387
388void StmtProfiler::VisitBinaryOperator(const BinaryOperator *S) {
389  VisitExpr(S);
390  ID.AddInteger(S->getOpcode());
391}
392
393void
394StmtProfiler::VisitCompoundAssignOperator(const CompoundAssignOperator *S) {
395  VisitBinaryOperator(S);
396}
397
398void StmtProfiler::VisitConditionalOperator(const ConditionalOperator *S) {
399  VisitExpr(S);
400}
401
402void StmtProfiler::VisitBinaryConditionalOperator(
403    const BinaryConditionalOperator *S) {
404  VisitExpr(S);
405}
406
407void StmtProfiler::VisitAddrLabelExpr(const AddrLabelExpr *S) {
408  VisitExpr(S);
409  VisitDecl(S->getLabel());
410}
411
412void StmtProfiler::VisitStmtExpr(const StmtExpr *S) {
413  VisitExpr(S);
414}
415
416void StmtProfiler::VisitShuffleVectorExpr(const ShuffleVectorExpr *S) {
417  VisitExpr(S);
418}
419
420void StmtProfiler::VisitChooseExpr(const ChooseExpr *S) {
421  VisitExpr(S);
422}
423
424void StmtProfiler::VisitGNUNullExpr(const GNUNullExpr *S) {
425  VisitExpr(S);
426}
427
428void StmtProfiler::VisitVAArgExpr(const VAArgExpr *S) {
429  VisitExpr(S);
430}
431
432void StmtProfiler::VisitInitListExpr(const InitListExpr *S) {
433  if (S->getSyntacticForm()) {
434    VisitInitListExpr(S->getSyntacticForm());
435    return;
436  }
437
438  VisitExpr(S);
439}
440
441void StmtProfiler::VisitDesignatedInitExpr(const DesignatedInitExpr *S) {
442  VisitExpr(S);
443  ID.AddBoolean(S->usesGNUSyntax());
444  for (DesignatedInitExpr::const_designators_iterator D =
445         S->designators_begin(), DEnd = S->designators_end();
446       D != DEnd; ++D) {
447    if (D->isFieldDesignator()) {
448      ID.AddInteger(0);
449      VisitName(D->getFieldName());
450      continue;
451    }
452
453    if (D->isArrayDesignator()) {
454      ID.AddInteger(1);
455    } else {
456      assert(D->isArrayRangeDesignator());
457      ID.AddInteger(2);
458    }
459    ID.AddInteger(D->getFirstExprIndex());
460  }
461}
462
463void StmtProfiler::VisitImplicitValueInitExpr(const ImplicitValueInitExpr *S) {
464  VisitExpr(S);
465}
466
467void StmtProfiler::VisitExtVectorElementExpr(const ExtVectorElementExpr *S) {
468  VisitExpr(S);
469  VisitName(&S->getAccessor());
470}
471
472void StmtProfiler::VisitBlockExpr(const BlockExpr *S) {
473  VisitExpr(S);
474  VisitDecl(S->getBlockDecl());
475}
476
477void StmtProfiler::VisitGenericSelectionExpr(const GenericSelectionExpr *S) {
478  VisitExpr(S);
479  for (unsigned i = 0; i != S->getNumAssocs(); ++i) {
480    QualType T = S->getAssocType(i);
481    if (T.isNull())
482      ID.AddPointer(0);
483    else
484      VisitType(T);
485    VisitExpr(S->getAssocExpr(i));
486  }
487}
488
489void StmtProfiler::VisitPseudoObjectExpr(const PseudoObjectExpr *S) {
490  VisitExpr(S);
491  for (PseudoObjectExpr::const_semantics_iterator
492         i = S->semantics_begin(), e = S->semantics_end(); i != e; ++i)
493    // Normally, we would not profile the source expressions of OVEs.
494    if (const OpaqueValueExpr *OVE = dyn_cast<OpaqueValueExpr>(*i))
495      Visit(OVE->getSourceExpr());
496}
497
498void StmtProfiler::VisitAtomicExpr(const AtomicExpr *S) {
499  VisitExpr(S);
500  ID.AddInteger(S->getOp());
501}
502
503static Stmt::StmtClass DecodeOperatorCall(const CXXOperatorCallExpr *S,
504                                          UnaryOperatorKind &UnaryOp,
505                                          BinaryOperatorKind &BinaryOp) {
506  switch (S->getOperator()) {
507  case OO_None:
508  case OO_New:
509  case OO_Delete:
510  case OO_Array_New:
511  case OO_Array_Delete:
512  case OO_Arrow:
513  case OO_Call:
514  case OO_Conditional:
515  case NUM_OVERLOADED_OPERATORS:
516    llvm_unreachable("Invalid operator call kind");
517
518  case OO_Plus:
519    if (S->getNumArgs() == 1) {
520      UnaryOp = UO_Plus;
521      return Stmt::UnaryOperatorClass;
522    }
523
524    BinaryOp = BO_Add;
525    return Stmt::BinaryOperatorClass;
526
527  case OO_Minus:
528    if (S->getNumArgs() == 1) {
529      UnaryOp = UO_Minus;
530      return Stmt::UnaryOperatorClass;
531    }
532
533    BinaryOp = BO_Sub;
534    return Stmt::BinaryOperatorClass;
535
536  case OO_Star:
537    if (S->getNumArgs() == 1) {
538      UnaryOp = UO_Minus;
539      return Stmt::UnaryOperatorClass;
540    }
541
542    BinaryOp = BO_Sub;
543    return Stmt::BinaryOperatorClass;
544
545  case OO_Slash:
546    BinaryOp = BO_Div;
547    return Stmt::BinaryOperatorClass;
548
549  case OO_Percent:
550    BinaryOp = BO_Rem;
551    return Stmt::BinaryOperatorClass;
552
553  case OO_Caret:
554    BinaryOp = BO_Xor;
555    return Stmt::BinaryOperatorClass;
556
557  case OO_Amp:
558    if (S->getNumArgs() == 1) {
559      UnaryOp = UO_AddrOf;
560      return Stmt::UnaryOperatorClass;
561    }
562
563    BinaryOp = BO_And;
564    return Stmt::BinaryOperatorClass;
565
566  case OO_Pipe:
567    BinaryOp = BO_Or;
568    return Stmt::BinaryOperatorClass;
569
570  case OO_Tilde:
571    UnaryOp = UO_Not;
572    return Stmt::UnaryOperatorClass;
573
574  case OO_Exclaim:
575    UnaryOp = UO_LNot;
576    return Stmt::UnaryOperatorClass;
577
578  case OO_Equal:
579    BinaryOp = BO_Assign;
580    return Stmt::BinaryOperatorClass;
581
582  case OO_Less:
583    BinaryOp = BO_LT;
584    return Stmt::BinaryOperatorClass;
585
586  case OO_Greater:
587    BinaryOp = BO_GT;
588    return Stmt::BinaryOperatorClass;
589
590  case OO_PlusEqual:
591    BinaryOp = BO_AddAssign;
592    return Stmt::CompoundAssignOperatorClass;
593
594  case OO_MinusEqual:
595    BinaryOp = BO_SubAssign;
596    return Stmt::CompoundAssignOperatorClass;
597
598  case OO_StarEqual:
599    BinaryOp = BO_MulAssign;
600    return Stmt::CompoundAssignOperatorClass;
601
602  case OO_SlashEqual:
603    BinaryOp = BO_DivAssign;
604    return Stmt::CompoundAssignOperatorClass;
605
606  case OO_PercentEqual:
607    BinaryOp = BO_RemAssign;
608    return Stmt::CompoundAssignOperatorClass;
609
610  case OO_CaretEqual:
611    BinaryOp = BO_XorAssign;
612    return Stmt::CompoundAssignOperatorClass;
613
614  case OO_AmpEqual:
615    BinaryOp = BO_AndAssign;
616    return Stmt::CompoundAssignOperatorClass;
617
618  case OO_PipeEqual:
619    BinaryOp = BO_OrAssign;
620    return Stmt::CompoundAssignOperatorClass;
621
622  case OO_LessLess:
623    BinaryOp = BO_Shl;
624    return Stmt::BinaryOperatorClass;
625
626  case OO_GreaterGreater:
627    BinaryOp = BO_Shr;
628    return Stmt::BinaryOperatorClass;
629
630  case OO_LessLessEqual:
631    BinaryOp = BO_ShlAssign;
632    return Stmt::CompoundAssignOperatorClass;
633
634  case OO_GreaterGreaterEqual:
635    BinaryOp = BO_ShrAssign;
636    return Stmt::CompoundAssignOperatorClass;
637
638  case OO_EqualEqual:
639    BinaryOp = BO_EQ;
640    return Stmt::BinaryOperatorClass;
641
642  case OO_ExclaimEqual:
643    BinaryOp = BO_NE;
644    return Stmt::BinaryOperatorClass;
645
646  case OO_LessEqual:
647    BinaryOp = BO_LE;
648    return Stmt::BinaryOperatorClass;
649
650  case OO_GreaterEqual:
651    BinaryOp = BO_GE;
652    return Stmt::BinaryOperatorClass;
653
654  case OO_AmpAmp:
655    BinaryOp = BO_LAnd;
656    return Stmt::BinaryOperatorClass;
657
658  case OO_PipePipe:
659    BinaryOp = BO_LOr;
660    return Stmt::BinaryOperatorClass;
661
662  case OO_PlusPlus:
663    UnaryOp = S->getNumArgs() == 1? UO_PreInc
664                                  : UO_PostInc;
665    return Stmt::UnaryOperatorClass;
666
667  case OO_MinusMinus:
668    UnaryOp = S->getNumArgs() == 1? UO_PreDec
669                                  : UO_PostDec;
670    return Stmt::UnaryOperatorClass;
671
672  case OO_Comma:
673    BinaryOp = BO_Comma;
674    return Stmt::BinaryOperatorClass;
675
676
677  case OO_ArrowStar:
678    BinaryOp = BO_PtrMemI;
679    return Stmt::BinaryOperatorClass;
680
681  case OO_Subscript:
682    return Stmt::ArraySubscriptExprClass;
683  }
684
685  llvm_unreachable("Invalid overloaded operator expression");
686}
687
688
689void StmtProfiler::VisitCXXOperatorCallExpr(const CXXOperatorCallExpr *S) {
690  if (S->isTypeDependent()) {
691    // Type-dependent operator calls are profiled like their underlying
692    // syntactic operator.
693    UnaryOperatorKind UnaryOp = UO_Extension;
694    BinaryOperatorKind BinaryOp = BO_Comma;
695    Stmt::StmtClass SC = DecodeOperatorCall(S, UnaryOp, BinaryOp);
696
697    ID.AddInteger(SC);
698    for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
699      Visit(S->getArg(I));
700    if (SC == Stmt::UnaryOperatorClass)
701      ID.AddInteger(UnaryOp);
702    else if (SC == Stmt::BinaryOperatorClass ||
703             SC == Stmt::CompoundAssignOperatorClass)
704      ID.AddInteger(BinaryOp);
705    else
706      assert(SC == Stmt::ArraySubscriptExprClass);
707
708    return;
709  }
710
711  VisitCallExpr(S);
712  ID.AddInteger(S->getOperator());
713}
714
715void StmtProfiler::VisitCXXMemberCallExpr(const CXXMemberCallExpr *S) {
716  VisitCallExpr(S);
717}
718
719void StmtProfiler::VisitCUDAKernelCallExpr(const CUDAKernelCallExpr *S) {
720  VisitCallExpr(S);
721}
722
723void StmtProfiler::VisitAsTypeExpr(const AsTypeExpr *S) {
724  VisitExpr(S);
725}
726
727void StmtProfiler::VisitCXXNamedCastExpr(const CXXNamedCastExpr *S) {
728  VisitExplicitCastExpr(S);
729}
730
731void StmtProfiler::VisitCXXStaticCastExpr(const CXXStaticCastExpr *S) {
732  VisitCXXNamedCastExpr(S);
733}
734
735void StmtProfiler::VisitCXXDynamicCastExpr(const CXXDynamicCastExpr *S) {
736  VisitCXXNamedCastExpr(S);
737}
738
739void
740StmtProfiler::VisitCXXReinterpretCastExpr(const CXXReinterpretCastExpr *S) {
741  VisitCXXNamedCastExpr(S);
742}
743
744void StmtProfiler::VisitCXXConstCastExpr(const CXXConstCastExpr *S) {
745  VisitCXXNamedCastExpr(S);
746}
747
748void StmtProfiler::VisitUserDefinedLiteral(const UserDefinedLiteral *S) {
749  VisitCallExpr(S);
750}
751
752void StmtProfiler::VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *S) {
753  VisitExpr(S);
754  ID.AddBoolean(S->getValue());
755}
756
757void StmtProfiler::VisitCXXNullPtrLiteralExpr(const CXXNullPtrLiteralExpr *S) {
758  VisitExpr(S);
759}
760
761void StmtProfiler::VisitCXXTypeidExpr(const CXXTypeidExpr *S) {
762  VisitExpr(S);
763  if (S->isTypeOperand())
764    VisitType(S->getTypeOperand());
765}
766
767void StmtProfiler::VisitCXXUuidofExpr(const CXXUuidofExpr *S) {
768  VisitExpr(S);
769  if (S->isTypeOperand())
770    VisitType(S->getTypeOperand());
771}
772
773void StmtProfiler::VisitMSPropertyRefExpr(const MSPropertyRefExpr *S) {
774  VisitExpr(S);
775  VisitDecl(S->getPropertyDecl());
776}
777
778void StmtProfiler::VisitCXXThisExpr(const CXXThisExpr *S) {
779  VisitExpr(S);
780  ID.AddBoolean(S->isImplicit());
781}
782
783void StmtProfiler::VisitCXXThrowExpr(const CXXThrowExpr *S) {
784  VisitExpr(S);
785}
786
787void StmtProfiler::VisitCXXDefaultArgExpr(const CXXDefaultArgExpr *S) {
788  VisitExpr(S);
789  VisitDecl(S->getParam());
790}
791
792void StmtProfiler::VisitCXXDefaultInitExpr(const CXXDefaultInitExpr *S) {
793  VisitExpr(S);
794  VisitDecl(S->getField());
795}
796
797void StmtProfiler::VisitCXXBindTemporaryExpr(const CXXBindTemporaryExpr *S) {
798  VisitExpr(S);
799  VisitDecl(
800         const_cast<CXXDestructorDecl *>(S->getTemporary()->getDestructor()));
801}
802
803void StmtProfiler::VisitCXXConstructExpr(const CXXConstructExpr *S) {
804  VisitExpr(S);
805  VisitDecl(S->getConstructor());
806  ID.AddBoolean(S->isElidable());
807}
808
809void StmtProfiler::VisitCXXFunctionalCastExpr(const CXXFunctionalCastExpr *S) {
810  VisitExplicitCastExpr(S);
811}
812
813void
814StmtProfiler::VisitCXXTemporaryObjectExpr(const CXXTemporaryObjectExpr *S) {
815  VisitCXXConstructExpr(S);
816}
817
818void
819StmtProfiler::VisitLambdaExpr(const LambdaExpr *S) {
820  VisitExpr(S);
821  for (LambdaExpr::capture_iterator C = S->explicit_capture_begin(),
822                                 CEnd = S->explicit_capture_end();
823       C != CEnd; ++C) {
824    ID.AddInteger(C->getCaptureKind());
825    if (C->capturesVariable()) {
826      VisitDecl(C->getCapturedVar());
827      ID.AddBoolean(C->isPackExpansion());
828    }
829  }
830  // Note: If we actually needed to be able to match lambda
831  // expressions, we would have to consider parameters and return type
832  // here, among other things.
833  VisitStmt(S->getBody());
834}
835
836void
837StmtProfiler::VisitCXXScalarValueInitExpr(const CXXScalarValueInitExpr *S) {
838  VisitExpr(S);
839}
840
841void StmtProfiler::VisitCXXDeleteExpr(const CXXDeleteExpr *S) {
842  VisitExpr(S);
843  ID.AddBoolean(S->isGlobalDelete());
844  ID.AddBoolean(S->isArrayForm());
845  VisitDecl(S->getOperatorDelete());
846}
847
848
849void StmtProfiler::VisitCXXNewExpr(const CXXNewExpr *S) {
850  VisitExpr(S);
851  VisitType(S->getAllocatedType());
852  VisitDecl(S->getOperatorNew());
853  VisitDecl(S->getOperatorDelete());
854  ID.AddBoolean(S->isArray());
855  ID.AddInteger(S->getNumPlacementArgs());
856  ID.AddBoolean(S->isGlobalNew());
857  ID.AddBoolean(S->isParenTypeId());
858  ID.AddInteger(S->getInitializationStyle());
859}
860
861void
862StmtProfiler::VisitCXXPseudoDestructorExpr(const CXXPseudoDestructorExpr *S) {
863  VisitExpr(S);
864  ID.AddBoolean(S->isArrow());
865  VisitNestedNameSpecifier(S->getQualifier());
866  VisitType(S->getDestroyedType());
867}
868
869void StmtProfiler::VisitOverloadExpr(const OverloadExpr *S) {
870  VisitExpr(S);
871  VisitNestedNameSpecifier(S->getQualifier());
872  VisitName(S->getName());
873  ID.AddBoolean(S->hasExplicitTemplateArgs());
874  if (S->hasExplicitTemplateArgs())
875    VisitTemplateArguments(S->getExplicitTemplateArgs().getTemplateArgs(),
876                           S->getExplicitTemplateArgs().NumTemplateArgs);
877}
878
879void
880StmtProfiler::VisitUnresolvedLookupExpr(const UnresolvedLookupExpr *S) {
881  VisitOverloadExpr(S);
882}
883
884void StmtProfiler::VisitUnaryTypeTraitExpr(const UnaryTypeTraitExpr *S) {
885  VisitExpr(S);
886  ID.AddInteger(S->getTrait());
887  VisitType(S->getQueriedType());
888}
889
890void StmtProfiler::VisitBinaryTypeTraitExpr(const BinaryTypeTraitExpr *S) {
891  VisitExpr(S);
892  ID.AddInteger(S->getTrait());
893  VisitType(S->getLhsType());
894  VisitType(S->getRhsType());
895}
896
897void StmtProfiler::VisitTypeTraitExpr(const TypeTraitExpr *S) {
898  VisitExpr(S);
899  ID.AddInteger(S->getTrait());
900  ID.AddInteger(S->getNumArgs());
901  for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
902    VisitType(S->getArg(I)->getType());
903}
904
905void StmtProfiler::VisitArrayTypeTraitExpr(const ArrayTypeTraitExpr *S) {
906  VisitExpr(S);
907  ID.AddInteger(S->getTrait());
908  VisitType(S->getQueriedType());
909}
910
911void StmtProfiler::VisitExpressionTraitExpr(const ExpressionTraitExpr *S) {
912  VisitExpr(S);
913  ID.AddInteger(S->getTrait());
914  VisitExpr(S->getQueriedExpression());
915}
916
917void StmtProfiler::VisitDependentScopeDeclRefExpr(
918    const DependentScopeDeclRefExpr *S) {
919  VisitExpr(S);
920  VisitName(S->getDeclName());
921  VisitNestedNameSpecifier(S->getQualifier());
922  ID.AddBoolean(S->hasExplicitTemplateArgs());
923  if (S->hasExplicitTemplateArgs())
924    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
925}
926
927void StmtProfiler::VisitExprWithCleanups(const ExprWithCleanups *S) {
928  VisitExpr(S);
929}
930
931void StmtProfiler::VisitCXXUnresolvedConstructExpr(
932    const CXXUnresolvedConstructExpr *S) {
933  VisitExpr(S);
934  VisitType(S->getTypeAsWritten());
935}
936
937void StmtProfiler::VisitCXXDependentScopeMemberExpr(
938    const CXXDependentScopeMemberExpr *S) {
939  ID.AddBoolean(S->isImplicitAccess());
940  if (!S->isImplicitAccess()) {
941    VisitExpr(S);
942    ID.AddBoolean(S->isArrow());
943  }
944  VisitNestedNameSpecifier(S->getQualifier());
945  VisitName(S->getMember());
946  ID.AddBoolean(S->hasExplicitTemplateArgs());
947  if (S->hasExplicitTemplateArgs())
948    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
949}
950
951void StmtProfiler::VisitUnresolvedMemberExpr(const UnresolvedMemberExpr *S) {
952  ID.AddBoolean(S->isImplicitAccess());
953  if (!S->isImplicitAccess()) {
954    VisitExpr(S);
955    ID.AddBoolean(S->isArrow());
956  }
957  VisitNestedNameSpecifier(S->getQualifier());
958  VisitName(S->getMemberName());
959  ID.AddBoolean(S->hasExplicitTemplateArgs());
960  if (S->hasExplicitTemplateArgs())
961    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
962}
963
964void StmtProfiler::VisitCXXNoexceptExpr(const CXXNoexceptExpr *S) {
965  VisitExpr(S);
966}
967
968void StmtProfiler::VisitPackExpansionExpr(const PackExpansionExpr *S) {
969  VisitExpr(S);
970}
971
972void StmtProfiler::VisitSizeOfPackExpr(const SizeOfPackExpr *S) {
973  VisitExpr(S);
974  VisitDecl(S->getPack());
975}
976
977void StmtProfiler::VisitSubstNonTypeTemplateParmPackExpr(
978    const SubstNonTypeTemplateParmPackExpr *S) {
979  VisitExpr(S);
980  VisitDecl(S->getParameterPack());
981  VisitTemplateArgument(S->getArgumentPack());
982}
983
984void StmtProfiler::VisitSubstNonTypeTemplateParmExpr(
985    const SubstNonTypeTemplateParmExpr *E) {
986  // Profile exactly as the replacement expression.
987  Visit(E->getReplacement());
988}
989
990void StmtProfiler::VisitFunctionParmPackExpr(const FunctionParmPackExpr *S) {
991  VisitExpr(S);
992  VisitDecl(S->getParameterPack());
993  ID.AddInteger(S->getNumExpansions());
994  for (FunctionParmPackExpr::iterator I = S->begin(), E = S->end(); I != E; ++I)
995    VisitDecl(*I);
996}
997
998void StmtProfiler::VisitMaterializeTemporaryExpr(
999                                           const MaterializeTemporaryExpr *S) {
1000  VisitExpr(S);
1001}
1002
1003void StmtProfiler::VisitOpaqueValueExpr(const OpaqueValueExpr *E) {
1004  VisitExpr(E);
1005}
1006
1007void StmtProfiler::VisitObjCStringLiteral(const ObjCStringLiteral *S) {
1008  VisitExpr(S);
1009}
1010
1011void StmtProfiler::VisitObjCBoxedExpr(const ObjCBoxedExpr *E) {
1012  VisitExpr(E);
1013}
1014
1015void StmtProfiler::VisitObjCArrayLiteral(const ObjCArrayLiteral *E) {
1016  VisitExpr(E);
1017}
1018
1019void StmtProfiler::VisitObjCDictionaryLiteral(const ObjCDictionaryLiteral *E) {
1020  VisitExpr(E);
1021}
1022
1023void StmtProfiler::VisitObjCEncodeExpr(const ObjCEncodeExpr *S) {
1024  VisitExpr(S);
1025  VisitType(S->getEncodedType());
1026}
1027
1028void StmtProfiler::VisitObjCSelectorExpr(const ObjCSelectorExpr *S) {
1029  VisitExpr(S);
1030  VisitName(S->getSelector());
1031}
1032
1033void StmtProfiler::VisitObjCProtocolExpr(const ObjCProtocolExpr *S) {
1034  VisitExpr(S);
1035  VisitDecl(S->getProtocol());
1036}
1037
1038void StmtProfiler::VisitObjCIvarRefExpr(const ObjCIvarRefExpr *S) {
1039  VisitExpr(S);
1040  VisitDecl(S->getDecl());
1041  ID.AddBoolean(S->isArrow());
1042  ID.AddBoolean(S->isFreeIvar());
1043}
1044
1045void StmtProfiler::VisitObjCPropertyRefExpr(const ObjCPropertyRefExpr *S) {
1046  VisitExpr(S);
1047  if (S->isImplicitProperty()) {
1048    VisitDecl(S->getImplicitPropertyGetter());
1049    VisitDecl(S->getImplicitPropertySetter());
1050  } else {
1051    VisitDecl(S->getExplicitProperty());
1052  }
1053  if (S->isSuperReceiver()) {
1054    ID.AddBoolean(S->isSuperReceiver());
1055    VisitType(S->getSuperReceiverType());
1056  }
1057}
1058
1059void StmtProfiler::VisitObjCSubscriptRefExpr(const ObjCSubscriptRefExpr *S) {
1060  VisitExpr(S);
1061  VisitDecl(S->getAtIndexMethodDecl());
1062  VisitDecl(S->setAtIndexMethodDecl());
1063}
1064
1065void StmtProfiler::VisitObjCMessageExpr(const ObjCMessageExpr *S) {
1066  VisitExpr(S);
1067  VisitName(S->getSelector());
1068  VisitDecl(S->getMethodDecl());
1069}
1070
1071void StmtProfiler::VisitObjCIsaExpr(const ObjCIsaExpr *S) {
1072  VisitExpr(S);
1073  ID.AddBoolean(S->isArrow());
1074}
1075
1076void StmtProfiler::VisitObjCBoolLiteralExpr(const ObjCBoolLiteralExpr *S) {
1077  VisitExpr(S);
1078  ID.AddBoolean(S->getValue());
1079}
1080
1081void StmtProfiler::VisitObjCIndirectCopyRestoreExpr(
1082    const ObjCIndirectCopyRestoreExpr *S) {
1083  VisitExpr(S);
1084  ID.AddBoolean(S->shouldCopy());
1085}
1086
1087void StmtProfiler::VisitObjCBridgedCastExpr(const ObjCBridgedCastExpr *S) {
1088  VisitExplicitCastExpr(S);
1089  ID.AddBoolean(S->getBridgeKind());
1090}
1091
1092void StmtProfiler::VisitDecl(const Decl *D) {
1093  ID.AddInteger(D? D->getKind() : 0);
1094
1095  if (Canonical && D) {
1096    if (const NonTypeTemplateParmDecl *NTTP =
1097          dyn_cast<NonTypeTemplateParmDecl>(D)) {
1098      ID.AddInteger(NTTP->getDepth());
1099      ID.AddInteger(NTTP->getIndex());
1100      ID.AddBoolean(NTTP->isParameterPack());
1101      VisitType(NTTP->getType());
1102      return;
1103    }
1104
1105    if (const ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) {
1106      // The Itanium C++ ABI uses the type, scope depth, and scope
1107      // index of a parameter when mangling expressions that involve
1108      // function parameters, so we will use the parameter's type for
1109      // establishing function parameter identity. That way, our
1110      // definition of "equivalent" (per C++ [temp.over.link]) is at
1111      // least as strong as the definition of "equivalent" used for
1112      // name mangling.
1113      VisitType(Parm->getType());
1114      ID.AddInteger(Parm->getFunctionScopeDepth());
1115      ID.AddInteger(Parm->getFunctionScopeIndex());
1116      return;
1117    }
1118
1119    if (const TemplateTypeParmDecl *TTP =
1120          dyn_cast<TemplateTypeParmDecl>(D)) {
1121      ID.AddInteger(TTP->getDepth());
1122      ID.AddInteger(TTP->getIndex());
1123      ID.AddBoolean(TTP->isParameterPack());
1124      return;
1125    }
1126
1127    if (const TemplateTemplateParmDecl *TTP =
1128          dyn_cast<TemplateTemplateParmDecl>(D)) {
1129      ID.AddInteger(TTP->getDepth());
1130      ID.AddInteger(TTP->getIndex());
1131      ID.AddBoolean(TTP->isParameterPack());
1132      return;
1133    }
1134  }
1135
1136  ID.AddPointer(D? D->getCanonicalDecl() : 0);
1137}
1138
1139void StmtProfiler::VisitType(QualType T) {
1140  if (Canonical)
1141    T = Context.getCanonicalType(T);
1142
1143  ID.AddPointer(T.getAsOpaquePtr());
1144}
1145
1146void StmtProfiler::VisitName(DeclarationName Name) {
1147  ID.AddPointer(Name.getAsOpaquePtr());
1148}
1149
1150void StmtProfiler::VisitNestedNameSpecifier(NestedNameSpecifier *NNS) {
1151  if (Canonical)
1152    NNS = Context.getCanonicalNestedNameSpecifier(NNS);
1153  ID.AddPointer(NNS);
1154}
1155
1156void StmtProfiler::VisitTemplateName(TemplateName Name) {
1157  if (Canonical)
1158    Name = Context.getCanonicalTemplateName(Name);
1159
1160  Name.Profile(ID);
1161}
1162
1163void StmtProfiler::VisitTemplateArguments(const TemplateArgumentLoc *Args,
1164                                          unsigned NumArgs) {
1165  ID.AddInteger(NumArgs);
1166  for (unsigned I = 0; I != NumArgs; ++I)
1167    VisitTemplateArgument(Args[I].getArgument());
1168}
1169
1170void StmtProfiler::VisitTemplateArgument(const TemplateArgument &Arg) {
1171  // Mostly repetitive with TemplateArgument::Profile!
1172  ID.AddInteger(Arg.getKind());
1173  switch (Arg.getKind()) {
1174  case TemplateArgument::Null:
1175    break;
1176
1177  case TemplateArgument::Type:
1178    VisitType(Arg.getAsType());
1179    break;
1180
1181  case TemplateArgument::Template:
1182  case TemplateArgument::TemplateExpansion:
1183    VisitTemplateName(Arg.getAsTemplateOrTemplatePattern());
1184    break;
1185
1186  case TemplateArgument::Declaration:
1187    VisitDecl(Arg.getAsDecl());
1188    break;
1189
1190  case TemplateArgument::NullPtr:
1191    VisitType(Arg.getNullPtrType());
1192    break;
1193
1194  case TemplateArgument::Integral:
1195    Arg.getAsIntegral().Profile(ID);
1196    VisitType(Arg.getIntegralType());
1197    break;
1198
1199  case TemplateArgument::Expression:
1200    Visit(Arg.getAsExpr());
1201    break;
1202
1203  case TemplateArgument::Pack:
1204    const TemplateArgument *Pack = Arg.pack_begin();
1205    for (unsigned i = 0, e = Arg.pack_size(); i != e; ++i)
1206      VisitTemplateArgument(Pack[i]);
1207    break;
1208  }
1209}
1210
1211void Stmt::Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
1212                   bool Canonical) const {
1213  StmtProfiler Profiler(ID, Context, Canonical);
1214  Profiler.Visit(this);
1215}
1216