StmtProfile.cpp revision 218893 
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 StmtVisitor<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(Stmt *S);
37
38#define STMT(Node, Base) void Visit##Node(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(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, unsigned NumArgs);
63
64    /// \brief Visit a single template argument.
65    void VisitTemplateArgument(const TemplateArgument &Arg);
66  };
67}
68
69void StmtProfiler::VisitStmt(Stmt *S) {
70  ID.AddInteger(S->getStmtClass());
71  for (Stmt::child_range C = S->children(); C; ++C)
72    Visit(*C);
73}
74
75void StmtProfiler::VisitDeclStmt(DeclStmt *S) {
76  VisitStmt(S);
77  for (DeclStmt::decl_iterator D = S->decl_begin(), DEnd = S->decl_end();
78       D != DEnd; ++D)
79    VisitDecl(*D);
80}
81
82void StmtProfiler::VisitNullStmt(NullStmt *S) {
83  VisitStmt(S);
84}
85
86void StmtProfiler::VisitCompoundStmt(CompoundStmt *S) {
87  VisitStmt(S);
88}
89
90void StmtProfiler::VisitSwitchCase(SwitchCase *S) {
91  VisitStmt(S);
92}
93
94void StmtProfiler::VisitCaseStmt(CaseStmt *S) {
95  VisitStmt(S);
96}
97
98void StmtProfiler::VisitDefaultStmt(DefaultStmt *S) {
99  VisitStmt(S);
100}
101
102void StmtProfiler::VisitLabelStmt(LabelStmt *S) {
103  VisitStmt(S);
104  VisitDecl(S->getDecl());
105}
106
107void StmtProfiler::VisitIfStmt(IfStmt *S) {
108  VisitStmt(S);
109  VisitDecl(S->getConditionVariable());
110}
111
112void StmtProfiler::VisitSwitchStmt(SwitchStmt *S) {
113  VisitStmt(S);
114  VisitDecl(S->getConditionVariable());
115}
116
117void StmtProfiler::VisitWhileStmt(WhileStmt *S) {
118  VisitStmt(S);
119  VisitDecl(S->getConditionVariable());
120}
121
122void StmtProfiler::VisitDoStmt(DoStmt *S) {
123  VisitStmt(S);
124}
125
126void StmtProfiler::VisitForStmt(ForStmt *S) {
127  VisitStmt(S);
128}
129
130void StmtProfiler::VisitGotoStmt(GotoStmt *S) {
131  VisitStmt(S);
132  VisitDecl(S->getLabel());
133}
134
135void StmtProfiler::VisitIndirectGotoStmt(IndirectGotoStmt *S) {
136  VisitStmt(S);
137}
138
139void StmtProfiler::VisitContinueStmt(ContinueStmt *S) {
140  VisitStmt(S);
141}
142
143void StmtProfiler::VisitBreakStmt(BreakStmt *S) {
144  VisitStmt(S);
145}
146
147void StmtProfiler::VisitReturnStmt(ReturnStmt *S) {
148  VisitStmt(S);
149}
150
151void StmtProfiler::VisitAsmStmt(AsmStmt *S) {
152  VisitStmt(S);
153  ID.AddBoolean(S->isVolatile());
154  ID.AddBoolean(S->isSimple());
155  VisitStringLiteral(S->getAsmString());
156  ID.AddInteger(S->getNumOutputs());
157  for (unsigned I = 0, N = S->getNumOutputs(); I != N; ++I) {
158    ID.AddString(S->getOutputName(I));
159    VisitStringLiteral(S->getOutputConstraintLiteral(I));
160  }
161  ID.AddInteger(S->getNumInputs());
162  for (unsigned I = 0, N = S->getNumInputs(); I != N; ++I) {
163    ID.AddString(S->getInputName(I));
164    VisitStringLiteral(S->getInputConstraintLiteral(I));
165  }
166  ID.AddInteger(S->getNumClobbers());
167  for (unsigned I = 0, N = S->getNumClobbers(); I != N; ++I)
168    VisitStringLiteral(S->getClobber(I));
169}
170
171void StmtProfiler::VisitCXXCatchStmt(CXXCatchStmt *S) {
172  VisitStmt(S);
173  VisitType(S->getCaughtType());
174}
175
176void StmtProfiler::VisitCXXTryStmt(CXXTryStmt *S) {
177  VisitStmt(S);
178}
179
180void StmtProfiler::VisitObjCForCollectionStmt(ObjCForCollectionStmt *S) {
181  VisitStmt(S);
182}
183
184void StmtProfiler::VisitObjCAtCatchStmt(ObjCAtCatchStmt *S) {
185  VisitStmt(S);
186  ID.AddBoolean(S->hasEllipsis());
187  if (S->getCatchParamDecl())
188    VisitType(S->getCatchParamDecl()->getType());
189}
190
191void StmtProfiler::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *S) {
192  VisitStmt(S);
193}
194
195void StmtProfiler::VisitObjCAtTryStmt(ObjCAtTryStmt *S) {
196  VisitStmt(S);
197}
198
199void StmtProfiler::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
200  VisitStmt(S);
201}
202
203void StmtProfiler::VisitObjCAtThrowStmt(ObjCAtThrowStmt *S) {
204  VisitStmt(S);
205}
206
207void StmtProfiler::VisitExpr(Expr *S) {
208  VisitStmt(S);
209}
210
211void StmtProfiler::VisitDeclRefExpr(DeclRefExpr *S) {
212  VisitExpr(S);
213  if (!Canonical)
214    VisitNestedNameSpecifier(S->getQualifier());
215  VisitDecl(S->getDecl());
216  if (!Canonical)
217    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
218}
219
220void StmtProfiler::VisitPredefinedExpr(PredefinedExpr *S) {
221  VisitExpr(S);
222  ID.AddInteger(S->getIdentType());
223}
224
225void StmtProfiler::VisitIntegerLiteral(IntegerLiteral *S) {
226  VisitExpr(S);
227  S->getValue().Profile(ID);
228}
229
230void StmtProfiler::VisitCharacterLiteral(CharacterLiteral *S) {
231  VisitExpr(S);
232  ID.AddBoolean(S->isWide());
233  ID.AddInteger(S->getValue());
234}
235
236void StmtProfiler::VisitFloatingLiteral(FloatingLiteral *S) {
237  VisitExpr(S);
238  S->getValue().Profile(ID);
239  ID.AddBoolean(S->isExact());
240}
241
242void StmtProfiler::VisitImaginaryLiteral(ImaginaryLiteral *S) {
243  VisitExpr(S);
244}
245
246void StmtProfiler::VisitStringLiteral(StringLiteral *S) {
247  VisitExpr(S);
248  ID.AddString(S->getString());
249  ID.AddBoolean(S->isWide());
250}
251
252void StmtProfiler::VisitParenExpr(ParenExpr *S) {
253  VisitExpr(S);
254}
255
256void StmtProfiler::VisitParenListExpr(ParenListExpr *S) {
257  VisitExpr(S);
258}
259
260void StmtProfiler::VisitUnaryOperator(UnaryOperator *S) {
261  VisitExpr(S);
262  ID.AddInteger(S->getOpcode());
263}
264
265void StmtProfiler::VisitOffsetOfExpr(OffsetOfExpr *S) {
266  VisitType(S->getTypeSourceInfo()->getType());
267  unsigned n = S->getNumComponents();
268  for (unsigned i = 0; i < n; ++i) {
269    const OffsetOfExpr::OffsetOfNode& ON = S->getComponent(i);
270    ID.AddInteger(ON.getKind());
271    switch (ON.getKind()) {
272    case OffsetOfExpr::OffsetOfNode::Array:
273      // Expressions handled below.
274      break;
275
276    case OffsetOfExpr::OffsetOfNode::Field:
277      VisitDecl(ON.getField());
278      break;
279
280    case OffsetOfExpr::OffsetOfNode::Identifier:
281      ID.AddPointer(ON.getFieldName());
282      break;
283
284    case OffsetOfExpr::OffsetOfNode::Base:
285      // These nodes are implicit, and therefore don't need profiling.
286      break;
287    }
288  }
289
290  VisitExpr(S);
291}
292
293void StmtProfiler::VisitSizeOfAlignOfExpr(SizeOfAlignOfExpr *S) {
294  VisitExpr(S);
295  ID.AddBoolean(S->isSizeOf());
296  if (S->isArgumentType())
297    VisitType(S->getArgumentType());
298}
299
300void StmtProfiler::VisitArraySubscriptExpr(ArraySubscriptExpr *S) {
301  VisitExpr(S);
302}
303
304void StmtProfiler::VisitCallExpr(CallExpr *S) {
305  VisitExpr(S);
306}
307
308void StmtProfiler::VisitMemberExpr(MemberExpr *S) {
309  VisitExpr(S);
310  VisitDecl(S->getMemberDecl());
311  if (!Canonical)
312    VisitNestedNameSpecifier(S->getQualifier());
313  ID.AddBoolean(S->isArrow());
314}
315
316void StmtProfiler::VisitCompoundLiteralExpr(CompoundLiteralExpr *S) {
317  VisitExpr(S);
318  ID.AddBoolean(S->isFileScope());
319}
320
321void StmtProfiler::VisitCastExpr(CastExpr *S) {
322  VisitExpr(S);
323}
324
325void StmtProfiler::VisitImplicitCastExpr(ImplicitCastExpr *S) {
326  VisitCastExpr(S);
327  ID.AddInteger(S->getValueKind());
328}
329
330void StmtProfiler::VisitExplicitCastExpr(ExplicitCastExpr *S) {
331  VisitCastExpr(S);
332  VisitType(S->getTypeAsWritten());
333}
334
335void StmtProfiler::VisitCStyleCastExpr(CStyleCastExpr *S) {
336  VisitExplicitCastExpr(S);
337}
338
339void StmtProfiler::VisitBinaryOperator(BinaryOperator *S) {
340  VisitExpr(S);
341  ID.AddInteger(S->getOpcode());
342}
343
344void StmtProfiler::VisitCompoundAssignOperator(CompoundAssignOperator *S) {
345  VisitBinaryOperator(S);
346}
347
348void StmtProfiler::VisitConditionalOperator(ConditionalOperator *S) {
349  VisitExpr(S);
350}
351
352void StmtProfiler::VisitBinaryConditionalOperator(BinaryConditionalOperator *S){
353  VisitExpr(S);
354}
355
356void StmtProfiler::VisitAddrLabelExpr(AddrLabelExpr *S) {
357  VisitExpr(S);
358  VisitDecl(S->getLabel());
359}
360
361void StmtProfiler::VisitStmtExpr(StmtExpr *S) {
362  VisitExpr(S);
363}
364
365void StmtProfiler::VisitShuffleVectorExpr(ShuffleVectorExpr *S) {
366  VisitExpr(S);
367}
368
369void StmtProfiler::VisitChooseExpr(ChooseExpr *S) {
370  VisitExpr(S);
371}
372
373void StmtProfiler::VisitGNUNullExpr(GNUNullExpr *S) {
374  VisitExpr(S);
375}
376
377void StmtProfiler::VisitVAArgExpr(VAArgExpr *S) {
378  VisitExpr(S);
379}
380
381void StmtProfiler::VisitInitListExpr(InitListExpr *S) {
382  if (S->getSyntacticForm()) {
383    VisitInitListExpr(S->getSyntacticForm());
384    return;
385  }
386
387  VisitExpr(S);
388}
389
390void StmtProfiler::VisitDesignatedInitExpr(DesignatedInitExpr *S) {
391  VisitExpr(S);
392  ID.AddBoolean(S->usesGNUSyntax());
393  for (DesignatedInitExpr::designators_iterator D = S->designators_begin(),
394                                             DEnd = S->designators_end();
395       D != DEnd; ++D) {
396    if (D->isFieldDesignator()) {
397      ID.AddInteger(0);
398      VisitName(D->getFieldName());
399      continue;
400    }
401
402    if (D->isArrayDesignator()) {
403      ID.AddInteger(1);
404    } else {
405      assert(D->isArrayRangeDesignator());
406      ID.AddInteger(2);
407    }
408    ID.AddInteger(D->getFirstExprIndex());
409  }
410}
411
412void StmtProfiler::VisitImplicitValueInitExpr(ImplicitValueInitExpr *S) {
413  VisitExpr(S);
414}
415
416void StmtProfiler::VisitExtVectorElementExpr(ExtVectorElementExpr *S) {
417  VisitExpr(S);
418  VisitName(&S->getAccessor());
419}
420
421void StmtProfiler::VisitBlockExpr(BlockExpr *S) {
422  VisitExpr(S);
423  VisitDecl(S->getBlockDecl());
424}
425
426void StmtProfiler::VisitBlockDeclRefExpr(BlockDeclRefExpr *S) {
427  VisitExpr(S);
428  VisitDecl(S->getDecl());
429  ID.AddBoolean(S->isByRef());
430  ID.AddBoolean(S->isConstQualAdded());
431}
432
433static Stmt::StmtClass DecodeOperatorCall(CXXOperatorCallExpr *S,
434                                          UnaryOperatorKind &UnaryOp,
435                                          BinaryOperatorKind &BinaryOp) {
436  switch (S->getOperator()) {
437  case OO_None:
438  case OO_New:
439  case OO_Delete:
440  case OO_Array_New:
441  case OO_Array_Delete:
442  case OO_Arrow:
443  case OO_Call:
444  case OO_Conditional:
445  case NUM_OVERLOADED_OPERATORS:
446    llvm_unreachable("Invalid operator call kind");
447    return Stmt::ArraySubscriptExprClass;
448
449  case OO_Plus:
450    if (S->getNumArgs() == 1) {
451      UnaryOp = UO_Plus;
452      return Stmt::UnaryOperatorClass;
453    }
454
455    BinaryOp = BO_Add;
456    return Stmt::BinaryOperatorClass;
457
458  case OO_Minus:
459    if (S->getNumArgs() == 1) {
460      UnaryOp = UO_Minus;
461      return Stmt::UnaryOperatorClass;
462    }
463
464    BinaryOp = BO_Sub;
465    return Stmt::BinaryOperatorClass;
466
467  case OO_Star:
468    if (S->getNumArgs() == 1) {
469      UnaryOp = UO_Minus;
470      return Stmt::UnaryOperatorClass;
471    }
472
473    BinaryOp = BO_Sub;
474    return Stmt::BinaryOperatorClass;
475
476  case OO_Slash:
477    BinaryOp = BO_Div;
478    return Stmt::BinaryOperatorClass;
479
480  case OO_Percent:
481    BinaryOp = BO_Rem;
482    return Stmt::BinaryOperatorClass;
483
484  case OO_Caret:
485    BinaryOp = BO_Xor;
486    return Stmt::BinaryOperatorClass;
487
488  case OO_Amp:
489    if (S->getNumArgs() == 1) {
490      UnaryOp = UO_AddrOf;
491      return Stmt::UnaryOperatorClass;
492    }
493
494    BinaryOp = BO_And;
495    return Stmt::BinaryOperatorClass;
496
497  case OO_Pipe:
498    BinaryOp = BO_Or;
499    return Stmt::BinaryOperatorClass;
500
501  case OO_Tilde:
502    UnaryOp = UO_Not;
503    return Stmt::UnaryOperatorClass;
504
505  case OO_Exclaim:
506    UnaryOp = UO_LNot;
507    return Stmt::UnaryOperatorClass;
508
509  case OO_Equal:
510    BinaryOp = BO_Assign;
511    return Stmt::BinaryOperatorClass;
512
513  case OO_Less:
514    BinaryOp = BO_LT;
515    return Stmt::BinaryOperatorClass;
516
517  case OO_Greater:
518    BinaryOp = BO_GT;
519    return Stmt::BinaryOperatorClass;
520
521  case OO_PlusEqual:
522    BinaryOp = BO_AddAssign;
523    return Stmt::CompoundAssignOperatorClass;
524
525  case OO_MinusEqual:
526    BinaryOp = BO_SubAssign;
527    return Stmt::CompoundAssignOperatorClass;
528
529  case OO_StarEqual:
530    BinaryOp = BO_MulAssign;
531    return Stmt::CompoundAssignOperatorClass;
532
533  case OO_SlashEqual:
534    BinaryOp = BO_DivAssign;
535    return Stmt::CompoundAssignOperatorClass;
536
537  case OO_PercentEqual:
538    BinaryOp = BO_RemAssign;
539    return Stmt::CompoundAssignOperatorClass;
540
541  case OO_CaretEqual:
542    BinaryOp = BO_XorAssign;
543    return Stmt::CompoundAssignOperatorClass;
544
545  case OO_AmpEqual:
546    BinaryOp = BO_AndAssign;
547    return Stmt::CompoundAssignOperatorClass;
548
549  case OO_PipeEqual:
550    BinaryOp = BO_OrAssign;
551    return Stmt::CompoundAssignOperatorClass;
552
553  case OO_LessLess:
554    BinaryOp = BO_Shl;
555    return Stmt::BinaryOperatorClass;
556
557  case OO_GreaterGreater:
558    BinaryOp = BO_Shr;
559    return Stmt::BinaryOperatorClass;
560
561  case OO_LessLessEqual:
562    BinaryOp = BO_ShlAssign;
563    return Stmt::CompoundAssignOperatorClass;
564
565  case OO_GreaterGreaterEqual:
566    BinaryOp = BO_ShrAssign;
567    return Stmt::CompoundAssignOperatorClass;
568
569  case OO_EqualEqual:
570    BinaryOp = BO_EQ;
571    return Stmt::BinaryOperatorClass;
572
573  case OO_ExclaimEqual:
574    BinaryOp = BO_NE;
575    return Stmt::BinaryOperatorClass;
576
577  case OO_LessEqual:
578    BinaryOp = BO_LE;
579    return Stmt::BinaryOperatorClass;
580
581  case OO_GreaterEqual:
582    BinaryOp = BO_GE;
583    return Stmt::BinaryOperatorClass;
584
585  case OO_AmpAmp:
586    BinaryOp = BO_LAnd;
587    return Stmt::BinaryOperatorClass;
588
589  case OO_PipePipe:
590    BinaryOp = BO_LOr;
591    return Stmt::BinaryOperatorClass;
592
593  case OO_PlusPlus:
594    UnaryOp = S->getNumArgs() == 1? UO_PreInc
595                                  : UO_PostInc;
596    return Stmt::UnaryOperatorClass;
597
598  case OO_MinusMinus:
599    UnaryOp = S->getNumArgs() == 1? UO_PreDec
600                                  : UO_PostDec;
601    return Stmt::UnaryOperatorClass;
602
603  case OO_Comma:
604    BinaryOp = BO_Comma;
605    return Stmt::BinaryOperatorClass;
606
607
608  case OO_ArrowStar:
609    BinaryOp = BO_PtrMemI;
610    return Stmt::BinaryOperatorClass;
611
612  case OO_Subscript:
613    return Stmt::ArraySubscriptExprClass;
614  }
615
616  llvm_unreachable("Invalid overloaded operator expression");
617}
618
619
620void StmtProfiler::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *S) {
621  if (S->isTypeDependent()) {
622    // Type-dependent operator calls are profiled like their underlying
623    // syntactic operator.
624    UnaryOperatorKind UnaryOp = UO_Extension;
625    BinaryOperatorKind BinaryOp = BO_Comma;
626    Stmt::StmtClass SC = DecodeOperatorCall(S, UnaryOp, BinaryOp);
627
628    ID.AddInteger(SC);
629    for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
630      Visit(S->getArg(I));
631    if (SC == Stmt::UnaryOperatorClass)
632      ID.AddInteger(UnaryOp);
633    else if (SC == Stmt::BinaryOperatorClass ||
634             SC == Stmt::CompoundAssignOperatorClass)
635      ID.AddInteger(BinaryOp);
636    else
637      assert(SC == Stmt::ArraySubscriptExprClass);
638
639    return;
640  }
641
642  VisitCallExpr(S);
643  ID.AddInteger(S->getOperator());
644}
645
646void StmtProfiler::VisitCXXMemberCallExpr(CXXMemberCallExpr *S) {
647  VisitCallExpr(S);
648}
649
650void StmtProfiler::VisitCUDAKernelCallExpr(CUDAKernelCallExpr *S) {
651  VisitCallExpr(S);
652}
653
654void StmtProfiler::VisitCXXNamedCastExpr(CXXNamedCastExpr *S) {
655  VisitExplicitCastExpr(S);
656}
657
658void StmtProfiler::VisitCXXStaticCastExpr(CXXStaticCastExpr *S) {
659  VisitCXXNamedCastExpr(S);
660}
661
662void StmtProfiler::VisitCXXDynamicCastExpr(CXXDynamicCastExpr *S) {
663  VisitCXXNamedCastExpr(S);
664}
665
666void StmtProfiler::VisitCXXReinterpretCastExpr(CXXReinterpretCastExpr *S) {
667  VisitCXXNamedCastExpr(S);
668}
669
670void StmtProfiler::VisitCXXConstCastExpr(CXXConstCastExpr *S) {
671  VisitCXXNamedCastExpr(S);
672}
673
674void StmtProfiler::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *S) {
675  VisitExpr(S);
676  ID.AddBoolean(S->getValue());
677}
678
679void StmtProfiler::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *S) {
680  VisitExpr(S);
681}
682
683void StmtProfiler::VisitCXXTypeidExpr(CXXTypeidExpr *S) {
684  VisitExpr(S);
685  if (S->isTypeOperand())
686    VisitType(S->getTypeOperand());
687}
688
689void StmtProfiler::VisitCXXUuidofExpr(CXXUuidofExpr *S) {
690  VisitExpr(S);
691  if (S->isTypeOperand())
692    VisitType(S->getTypeOperand());
693}
694
695void StmtProfiler::VisitCXXThisExpr(CXXThisExpr *S) {
696  VisitExpr(S);
697}
698
699void StmtProfiler::VisitCXXThrowExpr(CXXThrowExpr *S) {
700  VisitExpr(S);
701}
702
703void StmtProfiler::VisitCXXDefaultArgExpr(CXXDefaultArgExpr *S) {
704  VisitExpr(S);
705  VisitDecl(S->getParam());
706}
707
708void StmtProfiler::VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *S) {
709  VisitExpr(S);
710  VisitDecl(
711         const_cast<CXXDestructorDecl *>(S->getTemporary()->getDestructor()));
712}
713
714void StmtProfiler::VisitCXXConstructExpr(CXXConstructExpr *S) {
715  VisitExpr(S);
716  VisitDecl(S->getConstructor());
717  ID.AddBoolean(S->isElidable());
718}
719
720void StmtProfiler::VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr *S) {
721  VisitExplicitCastExpr(S);
722}
723
724void StmtProfiler::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *S) {
725  VisitCXXConstructExpr(S);
726}
727
728void StmtProfiler::VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *S) {
729  VisitExpr(S);
730}
731
732void StmtProfiler::VisitCXXDeleteExpr(CXXDeleteExpr *S) {
733  VisitExpr(S);
734  ID.AddBoolean(S->isGlobalDelete());
735  ID.AddBoolean(S->isArrayForm());
736  VisitDecl(S->getOperatorDelete());
737}
738
739
740void StmtProfiler::VisitCXXNewExpr(CXXNewExpr *S) {
741  VisitExpr(S);
742  VisitType(S->getAllocatedType());
743  VisitDecl(S->getOperatorNew());
744  VisitDecl(S->getOperatorDelete());
745  VisitDecl(S->getConstructor());
746  ID.AddBoolean(S->isArray());
747  ID.AddInteger(S->getNumPlacementArgs());
748  ID.AddBoolean(S->isGlobalNew());
749  ID.AddBoolean(S->isParenTypeId());
750  ID.AddBoolean(S->hasInitializer());
751  ID.AddInteger(S->getNumConstructorArgs());
752}
753
754void StmtProfiler::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *S) {
755  VisitExpr(S);
756  ID.AddBoolean(S->isArrow());
757  VisitNestedNameSpecifier(S->getQualifier());
758  VisitType(S->getDestroyedType());
759}
760
761void StmtProfiler::VisitOverloadExpr(OverloadExpr *S) {
762  VisitExpr(S);
763  VisitNestedNameSpecifier(S->getQualifier());
764  VisitName(S->getName());
765  ID.AddBoolean(S->hasExplicitTemplateArgs());
766  if (S->hasExplicitTemplateArgs())
767    VisitTemplateArguments(S->getExplicitTemplateArgs().getTemplateArgs(),
768                           S->getExplicitTemplateArgs().NumTemplateArgs);
769}
770
771void
772StmtProfiler::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *S) {
773  VisitOverloadExpr(S);
774}
775
776void StmtProfiler::VisitUnaryTypeTraitExpr(UnaryTypeTraitExpr *S) {
777  VisitExpr(S);
778  ID.AddInteger(S->getTrait());
779  VisitType(S->getQueriedType());
780}
781
782void StmtProfiler::VisitBinaryTypeTraitExpr(BinaryTypeTraitExpr *S) {
783  VisitExpr(S);
784  ID.AddInteger(S->getTrait());
785  VisitType(S->getLhsType());
786  VisitType(S->getRhsType());
787}
788
789void
790StmtProfiler::VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *S) {
791  VisitExpr(S);
792  VisitName(S->getDeclName());
793  VisitNestedNameSpecifier(S->getQualifier());
794  ID.AddBoolean(S->hasExplicitTemplateArgs());
795  if (S->hasExplicitTemplateArgs())
796    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
797}
798
799void StmtProfiler::VisitExprWithCleanups(ExprWithCleanups *S) {
800  VisitExpr(S);
801}
802
803void
804StmtProfiler::VisitCXXUnresolvedConstructExpr(CXXUnresolvedConstructExpr *S) {
805  VisitExpr(S);
806  VisitType(S->getTypeAsWritten());
807}
808
809void
810StmtProfiler::VisitCXXDependentScopeMemberExpr(CXXDependentScopeMemberExpr *S) {
811  ID.AddBoolean(S->isImplicitAccess());
812  if (!S->isImplicitAccess()) {
813    VisitExpr(S);
814    ID.AddBoolean(S->isArrow());
815  }
816  VisitNestedNameSpecifier(S->getQualifier());
817  VisitName(S->getMember());
818  ID.AddBoolean(S->hasExplicitTemplateArgs());
819  if (S->hasExplicitTemplateArgs())
820    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
821}
822
823void StmtProfiler::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *S) {
824  ID.AddBoolean(S->isImplicitAccess());
825  if (!S->isImplicitAccess()) {
826    VisitExpr(S);
827    ID.AddBoolean(S->isArrow());
828  }
829  VisitNestedNameSpecifier(S->getQualifier());
830  VisitName(S->getMemberName());
831  ID.AddBoolean(S->hasExplicitTemplateArgs());
832  if (S->hasExplicitTemplateArgs())
833    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
834}
835
836void StmtProfiler::VisitCXXNoexceptExpr(CXXNoexceptExpr *S) {
837  VisitExpr(S);
838}
839
840void StmtProfiler::VisitPackExpansionExpr(PackExpansionExpr *S) {
841  VisitExpr(S);
842}
843
844void StmtProfiler::VisitSizeOfPackExpr(SizeOfPackExpr *S) {
845  VisitExpr(S);
846  VisitDecl(S->getPack());
847}
848
849void StmtProfiler::VisitSubstNonTypeTemplateParmPackExpr(
850                                         SubstNonTypeTemplateParmPackExpr *S) {
851  VisitExpr(S);
852  VisitDecl(S->getParameterPack());
853  VisitTemplateArgument(S->getArgumentPack());
854}
855
856void StmtProfiler::VisitOpaqueValueExpr(OpaqueValueExpr *E) {
857  VisitExpr(E);
858}
859
860void StmtProfiler::VisitObjCStringLiteral(ObjCStringLiteral *S) {
861  VisitExpr(S);
862}
863
864void StmtProfiler::VisitObjCEncodeExpr(ObjCEncodeExpr *S) {
865  VisitExpr(S);
866  VisitType(S->getEncodedType());
867}
868
869void StmtProfiler::VisitObjCSelectorExpr(ObjCSelectorExpr *S) {
870  VisitExpr(S);
871  VisitName(S->getSelector());
872}
873
874void StmtProfiler::VisitObjCProtocolExpr(ObjCProtocolExpr *S) {
875  VisitExpr(S);
876  VisitDecl(S->getProtocol());
877}
878
879void StmtProfiler::VisitObjCIvarRefExpr(ObjCIvarRefExpr *S) {
880  VisitExpr(S);
881  VisitDecl(S->getDecl());
882  ID.AddBoolean(S->isArrow());
883  ID.AddBoolean(S->isFreeIvar());
884}
885
886void StmtProfiler::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *S) {
887  VisitExpr(S);
888  if (S->isImplicitProperty()) {
889    VisitDecl(S->getImplicitPropertyGetter());
890    VisitDecl(S->getImplicitPropertySetter());
891  } else {
892    VisitDecl(S->getExplicitProperty());
893  }
894  if (S->isSuperReceiver()) {
895    ID.AddBoolean(S->isSuperReceiver());
896    VisitType(S->getSuperReceiverType());
897  }
898}
899
900void StmtProfiler::VisitObjCMessageExpr(ObjCMessageExpr *S) {
901  VisitExpr(S);
902  VisitName(S->getSelector());
903  VisitDecl(S->getMethodDecl());
904}
905
906void StmtProfiler::VisitObjCIsaExpr(ObjCIsaExpr *S) {
907  VisitExpr(S);
908  ID.AddBoolean(S->isArrow());
909}
910
911void StmtProfiler::VisitDecl(Decl *D) {
912  ID.AddInteger(D? D->getKind() : 0);
913
914  if (Canonical && D) {
915    if (NonTypeTemplateParmDecl *NTTP = dyn_cast<NonTypeTemplateParmDecl>(D)) {
916      ID.AddInteger(NTTP->getDepth());
917      ID.AddInteger(NTTP->getIndex());
918      ID.AddBoolean(NTTP->isParameterPack());
919      VisitType(NTTP->getType());
920      return;
921    }
922
923    if (ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) {
924      // The Itanium C++ ABI uses the type of a parameter when mangling
925      // expressions that involve function parameters, so we will use the
926      // parameter's type for establishing function parameter identity. That
927      // way, our definition of "equivalent" (per C++ [temp.over.link])
928      // matches the definition of "equivalent" used for name mangling.
929      VisitType(Parm->getType());
930      return;
931    }
932
933    if (TemplateTemplateParmDecl *TTP = dyn_cast<TemplateTemplateParmDecl>(D)) {
934      ID.AddInteger(TTP->getDepth());
935      ID.AddInteger(TTP->getIndex());
936      ID.AddBoolean(TTP->isParameterPack());
937      return;
938    }
939  }
940
941  ID.AddPointer(D? D->getCanonicalDecl() : 0);
942}
943
944void StmtProfiler::VisitType(QualType T) {
945  if (Canonical)
946    T = Context.getCanonicalType(T);
947
948  ID.AddPointer(T.getAsOpaquePtr());
949}
950
951void StmtProfiler::VisitName(DeclarationName Name) {
952  ID.AddPointer(Name.getAsOpaquePtr());
953}
954
955void StmtProfiler::VisitNestedNameSpecifier(NestedNameSpecifier *NNS) {
956  if (Canonical)
957    NNS = Context.getCanonicalNestedNameSpecifier(NNS);
958  ID.AddPointer(NNS);
959}
960
961void StmtProfiler::VisitTemplateName(TemplateName Name) {
962  if (Canonical)
963    Name = Context.getCanonicalTemplateName(Name);
964
965  Name.Profile(ID);
966}
967
968void StmtProfiler::VisitTemplateArguments(const TemplateArgumentLoc *Args,
969                                          unsigned NumArgs) {
970  ID.AddInteger(NumArgs);
971  for (unsigned I = 0; I != NumArgs; ++I)
972    VisitTemplateArgument(Args[I].getArgument());
973}
974
975void StmtProfiler::VisitTemplateArgument(const TemplateArgument &Arg) {
976  // Mostly repetitive with TemplateArgument::Profile!
977  ID.AddInteger(Arg.getKind());
978  switch (Arg.getKind()) {
979  case TemplateArgument::Null:
980    break;
981
982  case TemplateArgument::Type:
983    VisitType(Arg.getAsType());
984    break;
985
986  case TemplateArgument::Template:
987  case TemplateArgument::TemplateExpansion:
988    VisitTemplateName(Arg.getAsTemplateOrTemplatePattern());
989    break;
990
991  case TemplateArgument::Declaration:
992    VisitDecl(Arg.getAsDecl());
993    break;
994
995  case TemplateArgument::Integral:
996    Arg.getAsIntegral()->Profile(ID);
997    VisitType(Arg.getIntegralType());
998    break;
999
1000  case TemplateArgument::Expression:
1001    Visit(Arg.getAsExpr());
1002    break;
1003
1004  case TemplateArgument::Pack:
1005    const TemplateArgument *Pack = Arg.pack_begin();
1006    for (unsigned i = 0, e = Arg.pack_size(); i != e; ++i)
1007      VisitTemplateArgument(Pack[i]);
1008    break;
1009  }
1010}
1011
1012void Stmt::Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
1013                   bool Canonical) {
1014  StmtProfiler Profiler(ID, Context, Canonical);
1015  Profiler.Visit(this);
1016}
1017