StmtProfile.cpp revision fb44de956f27875def889482b5393475060392af 
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::VisitCXXForRangeStmt(CXXForRangeStmt *S) {
181  VisitStmt(S);
182}
183
184void StmtProfiler::VisitSEHTryStmt(SEHTryStmt *S) {
185  VisitStmt(S);
186}
187
188void StmtProfiler::VisitSEHFinallyStmt(SEHFinallyStmt *S) {
189  VisitStmt(S);
190}
191
192void StmtProfiler::VisitSEHExceptStmt(SEHExceptStmt *S) {
193  VisitStmt(S);
194}
195
196void StmtProfiler::VisitObjCForCollectionStmt(ObjCForCollectionStmt *S) {
197  VisitStmt(S);
198}
199
200void StmtProfiler::VisitObjCAtCatchStmt(ObjCAtCatchStmt *S) {
201  VisitStmt(S);
202  ID.AddBoolean(S->hasEllipsis());
203  if (S->getCatchParamDecl())
204    VisitType(S->getCatchParamDecl()->getType());
205}
206
207void StmtProfiler::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *S) {
208  VisitStmt(S);
209}
210
211void StmtProfiler::VisitObjCAtTryStmt(ObjCAtTryStmt *S) {
212  VisitStmt(S);
213}
214
215void StmtProfiler::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
216  VisitStmt(S);
217}
218
219void StmtProfiler::VisitObjCAtThrowStmt(ObjCAtThrowStmt *S) {
220  VisitStmt(S);
221}
222
223void StmtProfiler::VisitExpr(Expr *S) {
224  VisitStmt(S);
225}
226
227void StmtProfiler::VisitDeclRefExpr(DeclRefExpr *S) {
228  VisitExpr(S);
229  if (!Canonical)
230    VisitNestedNameSpecifier(S->getQualifier());
231  VisitDecl(S->getDecl());
232  if (!Canonical)
233    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
234}
235
236void StmtProfiler::VisitPredefinedExpr(PredefinedExpr *S) {
237  VisitExpr(S);
238  ID.AddInteger(S->getIdentType());
239}
240
241void StmtProfiler::VisitIntegerLiteral(IntegerLiteral *S) {
242  VisitExpr(S);
243  S->getValue().Profile(ID);
244}
245
246void StmtProfiler::VisitCharacterLiteral(CharacterLiteral *S) {
247  VisitExpr(S);
248  ID.AddBoolean(S->isWide());
249  ID.AddInteger(S->getValue());
250}
251
252void StmtProfiler::VisitFloatingLiteral(FloatingLiteral *S) {
253  VisitExpr(S);
254  S->getValue().Profile(ID);
255  ID.AddBoolean(S->isExact());
256}
257
258void StmtProfiler::VisitImaginaryLiteral(ImaginaryLiteral *S) {
259  VisitExpr(S);
260}
261
262void StmtProfiler::VisitStringLiteral(StringLiteral *S) {
263  VisitExpr(S);
264  ID.AddString(S->getString());
265  ID.AddBoolean(S->isWide());
266}
267
268void StmtProfiler::VisitParenExpr(ParenExpr *S) {
269  VisitExpr(S);
270}
271
272void StmtProfiler::VisitParenListExpr(ParenListExpr *S) {
273  VisitExpr(S);
274}
275
276void StmtProfiler::VisitUnaryOperator(UnaryOperator *S) {
277  VisitExpr(S);
278  ID.AddInteger(S->getOpcode());
279}
280
281void StmtProfiler::VisitOffsetOfExpr(OffsetOfExpr *S) {
282  VisitType(S->getTypeSourceInfo()->getType());
283  unsigned n = S->getNumComponents();
284  for (unsigned i = 0; i < n; ++i) {
285    const OffsetOfExpr::OffsetOfNode& ON = S->getComponent(i);
286    ID.AddInteger(ON.getKind());
287    switch (ON.getKind()) {
288    case OffsetOfExpr::OffsetOfNode::Array:
289      // Expressions handled below.
290      break;
291
292    case OffsetOfExpr::OffsetOfNode::Field:
293      VisitDecl(ON.getField());
294      break;
295
296    case OffsetOfExpr::OffsetOfNode::Identifier:
297      ID.AddPointer(ON.getFieldName());
298      break;
299
300    case OffsetOfExpr::OffsetOfNode::Base:
301      // These nodes are implicit, and therefore don't need profiling.
302      break;
303    }
304  }
305
306  VisitExpr(S);
307}
308
309void StmtProfiler::VisitUnaryExprOrTypeTraitExpr(UnaryExprOrTypeTraitExpr *S) {
310  VisitExpr(S);
311  ID.AddInteger(S->getKind());
312  if (S->isArgumentType())
313    VisitType(S->getArgumentType());
314}
315
316void StmtProfiler::VisitArraySubscriptExpr(ArraySubscriptExpr *S) {
317  VisitExpr(S);
318}
319
320void StmtProfiler::VisitCallExpr(CallExpr *S) {
321  VisitExpr(S);
322}
323
324void StmtProfiler::VisitMemberExpr(MemberExpr *S) {
325  VisitExpr(S);
326  VisitDecl(S->getMemberDecl());
327  if (!Canonical)
328    VisitNestedNameSpecifier(S->getQualifier());
329  ID.AddBoolean(S->isArrow());
330}
331
332void StmtProfiler::VisitCompoundLiteralExpr(CompoundLiteralExpr *S) {
333  VisitExpr(S);
334  ID.AddBoolean(S->isFileScope());
335}
336
337void StmtProfiler::VisitCastExpr(CastExpr *S) {
338  VisitExpr(S);
339}
340
341void StmtProfiler::VisitImplicitCastExpr(ImplicitCastExpr *S) {
342  VisitCastExpr(S);
343  ID.AddInteger(S->getValueKind());
344}
345
346void StmtProfiler::VisitExplicitCastExpr(ExplicitCastExpr *S) {
347  VisitCastExpr(S);
348  VisitType(S->getTypeAsWritten());
349}
350
351void StmtProfiler::VisitCStyleCastExpr(CStyleCastExpr *S) {
352  VisitExplicitCastExpr(S);
353}
354
355void StmtProfiler::VisitBinaryOperator(BinaryOperator *S) {
356  VisitExpr(S);
357  ID.AddInteger(S->getOpcode());
358}
359
360void StmtProfiler::VisitCompoundAssignOperator(CompoundAssignOperator *S) {
361  VisitBinaryOperator(S);
362}
363
364void StmtProfiler::VisitConditionalOperator(ConditionalOperator *S) {
365  VisitExpr(S);
366}
367
368void StmtProfiler::VisitBinaryConditionalOperator(BinaryConditionalOperator *S){
369  VisitExpr(S);
370}
371
372void StmtProfiler::VisitAddrLabelExpr(AddrLabelExpr *S) {
373  VisitExpr(S);
374  VisitDecl(S->getLabel());
375}
376
377void StmtProfiler::VisitStmtExpr(StmtExpr *S) {
378  VisitExpr(S);
379}
380
381void StmtProfiler::VisitShuffleVectorExpr(ShuffleVectorExpr *S) {
382  VisitExpr(S);
383}
384
385void StmtProfiler::VisitChooseExpr(ChooseExpr *S) {
386  VisitExpr(S);
387}
388
389void StmtProfiler::VisitGNUNullExpr(GNUNullExpr *S) {
390  VisitExpr(S);
391}
392
393void StmtProfiler::VisitVAArgExpr(VAArgExpr *S) {
394  VisitExpr(S);
395}
396
397void StmtProfiler::VisitInitListExpr(InitListExpr *S) {
398  if (S->getSyntacticForm()) {
399    VisitInitListExpr(S->getSyntacticForm());
400    return;
401  }
402
403  VisitExpr(S);
404}
405
406void StmtProfiler::VisitDesignatedInitExpr(DesignatedInitExpr *S) {
407  VisitExpr(S);
408  ID.AddBoolean(S->usesGNUSyntax());
409  for (DesignatedInitExpr::designators_iterator D = S->designators_begin(),
410                                             DEnd = S->designators_end();
411       D != DEnd; ++D) {
412    if (D->isFieldDesignator()) {
413      ID.AddInteger(0);
414      VisitName(D->getFieldName());
415      continue;
416    }
417
418    if (D->isArrayDesignator()) {
419      ID.AddInteger(1);
420    } else {
421      assert(D->isArrayRangeDesignator());
422      ID.AddInteger(2);
423    }
424    ID.AddInteger(D->getFirstExprIndex());
425  }
426}
427
428void StmtProfiler::VisitImplicitValueInitExpr(ImplicitValueInitExpr *S) {
429  VisitExpr(S);
430}
431
432void StmtProfiler::VisitExtVectorElementExpr(ExtVectorElementExpr *S) {
433  VisitExpr(S);
434  VisitName(&S->getAccessor());
435}
436
437void StmtProfiler::VisitBlockExpr(BlockExpr *S) {
438  VisitExpr(S);
439  VisitDecl(S->getBlockDecl());
440}
441
442void StmtProfiler::VisitBlockDeclRefExpr(BlockDeclRefExpr *S) {
443  VisitExpr(S);
444  VisitDecl(S->getDecl());
445  ID.AddBoolean(S->isByRef());
446  ID.AddBoolean(S->isConstQualAdded());
447}
448
449void StmtProfiler::VisitGenericSelectionExpr(GenericSelectionExpr *S) {
450  VisitExpr(S);
451  for (unsigned i = 0; i != S->getNumAssocs(); ++i) {
452    QualType T = S->getAssocType(i);
453    if (T.isNull())
454      ID.AddPointer(0);
455    else
456      VisitType(T);
457    VisitExpr(S->getAssocExpr(i));
458  }
459}
460
461static Stmt::StmtClass DecodeOperatorCall(CXXOperatorCallExpr *S,
462                                          UnaryOperatorKind &UnaryOp,
463                                          BinaryOperatorKind &BinaryOp) {
464  switch (S->getOperator()) {
465  case OO_None:
466  case OO_New:
467  case OO_Delete:
468  case OO_Array_New:
469  case OO_Array_Delete:
470  case OO_Arrow:
471  case OO_Call:
472  case OO_Conditional:
473  case NUM_OVERLOADED_OPERATORS:
474    llvm_unreachable("Invalid operator call kind");
475    return Stmt::ArraySubscriptExprClass;
476
477  case OO_Plus:
478    if (S->getNumArgs() == 1) {
479      UnaryOp = UO_Plus;
480      return Stmt::UnaryOperatorClass;
481    }
482
483    BinaryOp = BO_Add;
484    return Stmt::BinaryOperatorClass;
485
486  case OO_Minus:
487    if (S->getNumArgs() == 1) {
488      UnaryOp = UO_Minus;
489      return Stmt::UnaryOperatorClass;
490    }
491
492    BinaryOp = BO_Sub;
493    return Stmt::BinaryOperatorClass;
494
495  case OO_Star:
496    if (S->getNumArgs() == 1) {
497      UnaryOp = UO_Minus;
498      return Stmt::UnaryOperatorClass;
499    }
500
501    BinaryOp = BO_Sub;
502    return Stmt::BinaryOperatorClass;
503
504  case OO_Slash:
505    BinaryOp = BO_Div;
506    return Stmt::BinaryOperatorClass;
507
508  case OO_Percent:
509    BinaryOp = BO_Rem;
510    return Stmt::BinaryOperatorClass;
511
512  case OO_Caret:
513    BinaryOp = BO_Xor;
514    return Stmt::BinaryOperatorClass;
515
516  case OO_Amp:
517    if (S->getNumArgs() == 1) {
518      UnaryOp = UO_AddrOf;
519      return Stmt::UnaryOperatorClass;
520    }
521
522    BinaryOp = BO_And;
523    return Stmt::BinaryOperatorClass;
524
525  case OO_Pipe:
526    BinaryOp = BO_Or;
527    return Stmt::BinaryOperatorClass;
528
529  case OO_Tilde:
530    UnaryOp = UO_Not;
531    return Stmt::UnaryOperatorClass;
532
533  case OO_Exclaim:
534    UnaryOp = UO_LNot;
535    return Stmt::UnaryOperatorClass;
536
537  case OO_Equal:
538    BinaryOp = BO_Assign;
539    return Stmt::BinaryOperatorClass;
540
541  case OO_Less:
542    BinaryOp = BO_LT;
543    return Stmt::BinaryOperatorClass;
544
545  case OO_Greater:
546    BinaryOp = BO_GT;
547    return Stmt::BinaryOperatorClass;
548
549  case OO_PlusEqual:
550    BinaryOp = BO_AddAssign;
551    return Stmt::CompoundAssignOperatorClass;
552
553  case OO_MinusEqual:
554    BinaryOp = BO_SubAssign;
555    return Stmt::CompoundAssignOperatorClass;
556
557  case OO_StarEqual:
558    BinaryOp = BO_MulAssign;
559    return Stmt::CompoundAssignOperatorClass;
560
561  case OO_SlashEqual:
562    BinaryOp = BO_DivAssign;
563    return Stmt::CompoundAssignOperatorClass;
564
565  case OO_PercentEqual:
566    BinaryOp = BO_RemAssign;
567    return Stmt::CompoundAssignOperatorClass;
568
569  case OO_CaretEqual:
570    BinaryOp = BO_XorAssign;
571    return Stmt::CompoundAssignOperatorClass;
572
573  case OO_AmpEqual:
574    BinaryOp = BO_AndAssign;
575    return Stmt::CompoundAssignOperatorClass;
576
577  case OO_PipeEqual:
578    BinaryOp = BO_OrAssign;
579    return Stmt::CompoundAssignOperatorClass;
580
581  case OO_LessLess:
582    BinaryOp = BO_Shl;
583    return Stmt::BinaryOperatorClass;
584
585  case OO_GreaterGreater:
586    BinaryOp = BO_Shr;
587    return Stmt::BinaryOperatorClass;
588
589  case OO_LessLessEqual:
590    BinaryOp = BO_ShlAssign;
591    return Stmt::CompoundAssignOperatorClass;
592
593  case OO_GreaterGreaterEqual:
594    BinaryOp = BO_ShrAssign;
595    return Stmt::CompoundAssignOperatorClass;
596
597  case OO_EqualEqual:
598    BinaryOp = BO_EQ;
599    return Stmt::BinaryOperatorClass;
600
601  case OO_ExclaimEqual:
602    BinaryOp = BO_NE;
603    return Stmt::BinaryOperatorClass;
604
605  case OO_LessEqual:
606    BinaryOp = BO_LE;
607    return Stmt::BinaryOperatorClass;
608
609  case OO_GreaterEqual:
610    BinaryOp = BO_GE;
611    return Stmt::BinaryOperatorClass;
612
613  case OO_AmpAmp:
614    BinaryOp = BO_LAnd;
615    return Stmt::BinaryOperatorClass;
616
617  case OO_PipePipe:
618    BinaryOp = BO_LOr;
619    return Stmt::BinaryOperatorClass;
620
621  case OO_PlusPlus:
622    UnaryOp = S->getNumArgs() == 1? UO_PreInc
623                                  : UO_PostInc;
624    return Stmt::UnaryOperatorClass;
625
626  case OO_MinusMinus:
627    UnaryOp = S->getNumArgs() == 1? UO_PreDec
628                                  : UO_PostDec;
629    return Stmt::UnaryOperatorClass;
630
631  case OO_Comma:
632    BinaryOp = BO_Comma;
633    return Stmt::BinaryOperatorClass;
634
635
636  case OO_ArrowStar:
637    BinaryOp = BO_PtrMemI;
638    return Stmt::BinaryOperatorClass;
639
640  case OO_Subscript:
641    return Stmt::ArraySubscriptExprClass;
642  }
643
644  llvm_unreachable("Invalid overloaded operator expression");
645}
646
647
648void StmtProfiler::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *S) {
649  if (S->isTypeDependent()) {
650    // Type-dependent operator calls are profiled like their underlying
651    // syntactic operator.
652    UnaryOperatorKind UnaryOp = UO_Extension;
653    BinaryOperatorKind BinaryOp = BO_Comma;
654    Stmt::StmtClass SC = DecodeOperatorCall(S, UnaryOp, BinaryOp);
655
656    ID.AddInteger(SC);
657    for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
658      Visit(S->getArg(I));
659    if (SC == Stmt::UnaryOperatorClass)
660      ID.AddInteger(UnaryOp);
661    else if (SC == Stmt::BinaryOperatorClass ||
662             SC == Stmt::CompoundAssignOperatorClass)
663      ID.AddInteger(BinaryOp);
664    else
665      assert(SC == Stmt::ArraySubscriptExprClass);
666
667    return;
668  }
669
670  VisitCallExpr(S);
671  ID.AddInteger(S->getOperator());
672}
673
674void StmtProfiler::VisitCXXMemberCallExpr(CXXMemberCallExpr *S) {
675  VisitCallExpr(S);
676}
677
678void StmtProfiler::VisitCUDAKernelCallExpr(CUDAKernelCallExpr *S) {
679  VisitCallExpr(S);
680}
681
682void StmtProfiler::VisitCXXNamedCastExpr(CXXNamedCastExpr *S) {
683  VisitExplicitCastExpr(S);
684}
685
686void StmtProfiler::VisitCXXStaticCastExpr(CXXStaticCastExpr *S) {
687  VisitCXXNamedCastExpr(S);
688}
689
690void StmtProfiler::VisitCXXDynamicCastExpr(CXXDynamicCastExpr *S) {
691  VisitCXXNamedCastExpr(S);
692}
693
694void StmtProfiler::VisitCXXReinterpretCastExpr(CXXReinterpretCastExpr *S) {
695  VisitCXXNamedCastExpr(S);
696}
697
698void StmtProfiler::VisitCXXConstCastExpr(CXXConstCastExpr *S) {
699  VisitCXXNamedCastExpr(S);
700}
701
702void StmtProfiler::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *S) {
703  VisitExpr(S);
704  ID.AddBoolean(S->getValue());
705}
706
707void StmtProfiler::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *S) {
708  VisitExpr(S);
709}
710
711void StmtProfiler::VisitCXXTypeidExpr(CXXTypeidExpr *S) {
712  VisitExpr(S);
713  if (S->isTypeOperand())
714    VisitType(S->getTypeOperand());
715}
716
717void StmtProfiler::VisitCXXUuidofExpr(CXXUuidofExpr *S) {
718  VisitExpr(S);
719  if (S->isTypeOperand())
720    VisitType(S->getTypeOperand());
721}
722
723void StmtProfiler::VisitCXXThisExpr(CXXThisExpr *S) {
724  VisitExpr(S);
725}
726
727void StmtProfiler::VisitCXXThrowExpr(CXXThrowExpr *S) {
728  VisitExpr(S);
729}
730
731void StmtProfiler::VisitCXXDefaultArgExpr(CXXDefaultArgExpr *S) {
732  VisitExpr(S);
733  VisitDecl(S->getParam());
734}
735
736void StmtProfiler::VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *S) {
737  VisitExpr(S);
738  VisitDecl(
739         const_cast<CXXDestructorDecl *>(S->getTemporary()->getDestructor()));
740}
741
742void StmtProfiler::VisitCXXConstructExpr(CXXConstructExpr *S) {
743  VisitExpr(S);
744  VisitDecl(S->getConstructor());
745  ID.AddBoolean(S->isElidable());
746}
747
748void StmtProfiler::VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr *S) {
749  VisitExplicitCastExpr(S);
750}
751
752void StmtProfiler::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *S) {
753  VisitCXXConstructExpr(S);
754}
755
756void StmtProfiler::VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *S) {
757  VisitExpr(S);
758}
759
760void StmtProfiler::VisitCXXDeleteExpr(CXXDeleteExpr *S) {
761  VisitExpr(S);
762  ID.AddBoolean(S->isGlobalDelete());
763  ID.AddBoolean(S->isArrayForm());
764  VisitDecl(S->getOperatorDelete());
765}
766
767
768void StmtProfiler::VisitCXXNewExpr(CXXNewExpr *S) {
769  VisitExpr(S);
770  VisitType(S->getAllocatedType());
771  VisitDecl(S->getOperatorNew());
772  VisitDecl(S->getOperatorDelete());
773  VisitDecl(S->getConstructor());
774  ID.AddBoolean(S->isArray());
775  ID.AddInteger(S->getNumPlacementArgs());
776  ID.AddBoolean(S->isGlobalNew());
777  ID.AddBoolean(S->isParenTypeId());
778  ID.AddBoolean(S->hasInitializer());
779  ID.AddInteger(S->getNumConstructorArgs());
780}
781
782void StmtProfiler::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *S) {
783  VisitExpr(S);
784  ID.AddBoolean(S->isArrow());
785  VisitNestedNameSpecifier(S->getQualifier());
786  VisitType(S->getDestroyedType());
787}
788
789void StmtProfiler::VisitOverloadExpr(OverloadExpr *S) {
790  VisitExpr(S);
791  VisitNestedNameSpecifier(S->getQualifier());
792  VisitName(S->getName());
793  ID.AddBoolean(S->hasExplicitTemplateArgs());
794  if (S->hasExplicitTemplateArgs())
795    VisitTemplateArguments(S->getExplicitTemplateArgs().getTemplateArgs(),
796                           S->getExplicitTemplateArgs().NumTemplateArgs);
797}
798
799void
800StmtProfiler::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *S) {
801  VisitOverloadExpr(S);
802}
803
804void StmtProfiler::VisitUnaryTypeTraitExpr(UnaryTypeTraitExpr *S) {
805  VisitExpr(S);
806  ID.AddInteger(S->getTrait());
807  VisitType(S->getQueriedType());
808}
809
810void StmtProfiler::VisitBinaryTypeTraitExpr(BinaryTypeTraitExpr *S) {
811  VisitExpr(S);
812  ID.AddInteger(S->getTrait());
813  VisitType(S->getLhsType());
814  VisitType(S->getRhsType());
815}
816
817void StmtProfiler::VisitArrayTypeTraitExpr(ArrayTypeTraitExpr *S) {
818  VisitExpr(S);
819  ID.AddInteger(S->getTrait());
820  VisitType(S->getQueriedType());
821}
822
823void StmtProfiler::VisitExpressionTraitExpr(ExpressionTraitExpr *S) {
824  VisitExpr(S);
825  ID.AddInteger(S->getTrait());
826  VisitExpr(S->getQueriedExpression());
827}
828
829void
830StmtProfiler::VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *S) {
831  VisitExpr(S);
832  VisitName(S->getDeclName());
833  VisitNestedNameSpecifier(S->getQualifier());
834  ID.AddBoolean(S->hasExplicitTemplateArgs());
835  if (S->hasExplicitTemplateArgs())
836    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
837}
838
839void StmtProfiler::VisitExprWithCleanups(ExprWithCleanups *S) {
840  VisitExpr(S);
841}
842
843void
844StmtProfiler::VisitCXXUnresolvedConstructExpr(CXXUnresolvedConstructExpr *S) {
845  VisitExpr(S);
846  VisitType(S->getTypeAsWritten());
847}
848
849void
850StmtProfiler::VisitCXXDependentScopeMemberExpr(CXXDependentScopeMemberExpr *S) {
851  ID.AddBoolean(S->isImplicitAccess());
852  if (!S->isImplicitAccess()) {
853    VisitExpr(S);
854    ID.AddBoolean(S->isArrow());
855  }
856  VisitNestedNameSpecifier(S->getQualifier());
857  VisitName(S->getMember());
858  ID.AddBoolean(S->hasExplicitTemplateArgs());
859  if (S->hasExplicitTemplateArgs())
860    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
861}
862
863void StmtProfiler::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *S) {
864  ID.AddBoolean(S->isImplicitAccess());
865  if (!S->isImplicitAccess()) {
866    VisitExpr(S);
867    ID.AddBoolean(S->isArrow());
868  }
869  VisitNestedNameSpecifier(S->getQualifier());
870  VisitName(S->getMemberName());
871  ID.AddBoolean(S->hasExplicitTemplateArgs());
872  if (S->hasExplicitTemplateArgs())
873    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
874}
875
876void StmtProfiler::VisitCXXNoexceptExpr(CXXNoexceptExpr *S) {
877  VisitExpr(S);
878}
879
880void StmtProfiler::VisitPackExpansionExpr(PackExpansionExpr *S) {
881  VisitExpr(S);
882}
883
884void StmtProfiler::VisitSizeOfPackExpr(SizeOfPackExpr *S) {
885  VisitExpr(S);
886  VisitDecl(S->getPack());
887}
888
889void StmtProfiler::VisitSubstNonTypeTemplateParmPackExpr(
890                                         SubstNonTypeTemplateParmPackExpr *S) {
891  VisitExpr(S);
892  VisitDecl(S->getParameterPack());
893  VisitTemplateArgument(S->getArgumentPack());
894}
895
896void StmtProfiler::VisitOpaqueValueExpr(OpaqueValueExpr *E) {
897  VisitExpr(E);
898}
899
900void StmtProfiler::VisitObjCStringLiteral(ObjCStringLiteral *S) {
901  VisitExpr(S);
902}
903
904void StmtProfiler::VisitObjCEncodeExpr(ObjCEncodeExpr *S) {
905  VisitExpr(S);
906  VisitType(S->getEncodedType());
907}
908
909void StmtProfiler::VisitObjCSelectorExpr(ObjCSelectorExpr *S) {
910  VisitExpr(S);
911  VisitName(S->getSelector());
912}
913
914void StmtProfiler::VisitObjCProtocolExpr(ObjCProtocolExpr *S) {
915  VisitExpr(S);
916  VisitDecl(S->getProtocol());
917}
918
919void StmtProfiler::VisitObjCIvarRefExpr(ObjCIvarRefExpr *S) {
920  VisitExpr(S);
921  VisitDecl(S->getDecl());
922  ID.AddBoolean(S->isArrow());
923  ID.AddBoolean(S->isFreeIvar());
924}
925
926void StmtProfiler::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *S) {
927  VisitExpr(S);
928  if (S->isImplicitProperty()) {
929    VisitDecl(S->getImplicitPropertyGetter());
930    VisitDecl(S->getImplicitPropertySetter());
931  } else {
932    VisitDecl(S->getExplicitProperty());
933  }
934  if (S->isSuperReceiver()) {
935    ID.AddBoolean(S->isSuperReceiver());
936    VisitType(S->getSuperReceiverType());
937  }
938}
939
940void StmtProfiler::VisitObjCMessageExpr(ObjCMessageExpr *S) {
941  VisitExpr(S);
942  VisitName(S->getSelector());
943  VisitDecl(S->getMethodDecl());
944}
945
946void StmtProfiler::VisitObjCIsaExpr(ObjCIsaExpr *S) {
947  VisitExpr(S);
948  ID.AddBoolean(S->isArrow());
949}
950
951void StmtProfiler::VisitDecl(Decl *D) {
952  ID.AddInteger(D? D->getKind() : 0);
953
954  if (Canonical && D) {
955    if (NonTypeTemplateParmDecl *NTTP = dyn_cast<NonTypeTemplateParmDecl>(D)) {
956      ID.AddInteger(NTTP->getDepth());
957      ID.AddInteger(NTTP->getIndex());
958      ID.AddBoolean(NTTP->isParameterPack());
959      VisitType(NTTP->getType());
960      return;
961    }
962
963    if (ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) {
964      // The Itanium C++ ABI uses the type, scope depth, and scope
965      // index of a parameter when mangling expressions that involve
966      // function parameters, so we will use the parameter's type for
967      // establishing function parameter identity. That way, our
968      // definition of "equivalent" (per C++ [temp.over.link]) is at
969      // least as strong as the definition of "equivalent" used for
970      // name mangling.
971      VisitType(Parm->getType());
972      ID.AddInteger(Parm->getFunctionScopeDepth());
973      ID.AddInteger(Parm->getFunctionScopeIndex());
974      return;
975    }
976
977    if (TemplateTemplateParmDecl *TTP = dyn_cast<TemplateTemplateParmDecl>(D)) {
978      ID.AddInteger(TTP->getDepth());
979      ID.AddInteger(TTP->getIndex());
980      ID.AddBoolean(TTP->isParameterPack());
981      return;
982    }
983  }
984
985  ID.AddPointer(D? D->getCanonicalDecl() : 0);
986}
987
988void StmtProfiler::VisitType(QualType T) {
989  if (Canonical)
990    T = Context.getCanonicalType(T);
991
992  ID.AddPointer(T.getAsOpaquePtr());
993}
994
995void StmtProfiler::VisitName(DeclarationName Name) {
996  ID.AddPointer(Name.getAsOpaquePtr());
997}
998
999void StmtProfiler::VisitNestedNameSpecifier(NestedNameSpecifier *NNS) {
1000  if (Canonical)
1001    NNS = Context.getCanonicalNestedNameSpecifier(NNS);
1002  ID.AddPointer(NNS);
1003}
1004
1005void StmtProfiler::VisitTemplateName(TemplateName Name) {
1006  if (Canonical)
1007    Name = Context.getCanonicalTemplateName(Name);
1008
1009  Name.Profile(ID);
1010}
1011
1012void StmtProfiler::VisitTemplateArguments(const TemplateArgumentLoc *Args,
1013                                          unsigned NumArgs) {
1014  ID.AddInteger(NumArgs);
1015  for (unsigned I = 0; I != NumArgs; ++I)
1016    VisitTemplateArgument(Args[I].getArgument());
1017}
1018
1019void StmtProfiler::VisitTemplateArgument(const TemplateArgument &Arg) {
1020  // Mostly repetitive with TemplateArgument::Profile!
1021  ID.AddInteger(Arg.getKind());
1022  switch (Arg.getKind()) {
1023  case TemplateArgument::Null:
1024    break;
1025
1026  case TemplateArgument::Type:
1027    VisitType(Arg.getAsType());
1028    break;
1029
1030  case TemplateArgument::Template:
1031  case TemplateArgument::TemplateExpansion:
1032    VisitTemplateName(Arg.getAsTemplateOrTemplatePattern());
1033    break;
1034
1035  case TemplateArgument::Declaration:
1036    VisitDecl(Arg.getAsDecl());
1037    break;
1038
1039  case TemplateArgument::Integral:
1040    Arg.getAsIntegral()->Profile(ID);
1041    VisitType(Arg.getIntegralType());
1042    break;
1043
1044  case TemplateArgument::Expression:
1045    Visit(Arg.getAsExpr());
1046    break;
1047
1048  case TemplateArgument::Pack:
1049    const TemplateArgument *Pack = Arg.pack_begin();
1050    for (unsigned i = 0, e = Arg.pack_size(); i != e; ++i)
1051      VisitTemplateArgument(Pack[i]);
1052    break;
1053  }
1054}
1055
1056void Stmt::Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
1057                   bool Canonical) {
1058  StmtProfiler Profiler(ID, Context, Canonical);
1059  Profiler.Visit(this);
1060}
1061