StmtProfile.cpp revision f111d935722ed488144600cea5ed03a6b5069e8f 
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::VisitObjCForCollectionStmt(ObjCForCollectionStmt *S) {
185  VisitStmt(S);
186}
187
188void StmtProfiler::VisitObjCAtCatchStmt(ObjCAtCatchStmt *S) {
189  VisitStmt(S);
190  ID.AddBoolean(S->hasEllipsis());
191  if (S->getCatchParamDecl())
192    VisitType(S->getCatchParamDecl()->getType());
193}
194
195void StmtProfiler::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *S) {
196  VisitStmt(S);
197}
198
199void StmtProfiler::VisitObjCAtTryStmt(ObjCAtTryStmt *S) {
200  VisitStmt(S);
201}
202
203void StmtProfiler::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
204  VisitStmt(S);
205}
206
207void StmtProfiler::VisitObjCAtThrowStmt(ObjCAtThrowStmt *S) {
208  VisitStmt(S);
209}
210
211void StmtProfiler::VisitExpr(Expr *S) {
212  VisitStmt(S);
213}
214
215void StmtProfiler::VisitDeclRefExpr(DeclRefExpr *S) {
216  VisitExpr(S);
217  if (!Canonical)
218    VisitNestedNameSpecifier(S->getQualifier());
219  VisitDecl(S->getDecl());
220  if (!Canonical)
221    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
222}
223
224void StmtProfiler::VisitPredefinedExpr(PredefinedExpr *S) {
225  VisitExpr(S);
226  ID.AddInteger(S->getIdentType());
227}
228
229void StmtProfiler::VisitIntegerLiteral(IntegerLiteral *S) {
230  VisitExpr(S);
231  S->getValue().Profile(ID);
232}
233
234void StmtProfiler::VisitCharacterLiteral(CharacterLiteral *S) {
235  VisitExpr(S);
236  ID.AddBoolean(S->isWide());
237  ID.AddInteger(S->getValue());
238}
239
240void StmtProfiler::VisitFloatingLiteral(FloatingLiteral *S) {
241  VisitExpr(S);
242  S->getValue().Profile(ID);
243  ID.AddBoolean(S->isExact());
244}
245
246void StmtProfiler::VisitImaginaryLiteral(ImaginaryLiteral *S) {
247  VisitExpr(S);
248}
249
250void StmtProfiler::VisitStringLiteral(StringLiteral *S) {
251  VisitExpr(S);
252  ID.AddString(S->getString());
253  ID.AddBoolean(S->isWide());
254}
255
256void StmtProfiler::VisitParenExpr(ParenExpr *S) {
257  VisitExpr(S);
258}
259
260void StmtProfiler::VisitParenListExpr(ParenListExpr *S) {
261  VisitExpr(S);
262}
263
264void StmtProfiler::VisitUnaryOperator(UnaryOperator *S) {
265  VisitExpr(S);
266  ID.AddInteger(S->getOpcode());
267}
268
269void StmtProfiler::VisitOffsetOfExpr(OffsetOfExpr *S) {
270  VisitType(S->getTypeSourceInfo()->getType());
271  unsigned n = S->getNumComponents();
272  for (unsigned i = 0; i < n; ++i) {
273    const OffsetOfExpr::OffsetOfNode& ON = S->getComponent(i);
274    ID.AddInteger(ON.getKind());
275    switch (ON.getKind()) {
276    case OffsetOfExpr::OffsetOfNode::Array:
277      // Expressions handled below.
278      break;
279
280    case OffsetOfExpr::OffsetOfNode::Field:
281      VisitDecl(ON.getField());
282      break;
283
284    case OffsetOfExpr::OffsetOfNode::Identifier:
285      ID.AddPointer(ON.getFieldName());
286      break;
287
288    case OffsetOfExpr::OffsetOfNode::Base:
289      // These nodes are implicit, and therefore don't need profiling.
290      break;
291    }
292  }
293
294  VisitExpr(S);
295}
296
297void StmtProfiler::VisitUnaryExprOrTypeTraitExpr(UnaryExprOrTypeTraitExpr *S) {
298  VisitExpr(S);
299  ID.AddInteger(S->getKind());
300  if (S->isArgumentType())
301    VisitType(S->getArgumentType());
302}
303
304void StmtProfiler::VisitArraySubscriptExpr(ArraySubscriptExpr *S) {
305  VisitExpr(S);
306}
307
308void StmtProfiler::VisitCallExpr(CallExpr *S) {
309  VisitExpr(S);
310}
311
312void StmtProfiler::VisitMemberExpr(MemberExpr *S) {
313  VisitExpr(S);
314  VisitDecl(S->getMemberDecl());
315  if (!Canonical)
316    VisitNestedNameSpecifier(S->getQualifier());
317  ID.AddBoolean(S->isArrow());
318}
319
320void StmtProfiler::VisitCompoundLiteralExpr(CompoundLiteralExpr *S) {
321  VisitExpr(S);
322  ID.AddBoolean(S->isFileScope());
323}
324
325void StmtProfiler::VisitCastExpr(CastExpr *S) {
326  VisitExpr(S);
327}
328
329void StmtProfiler::VisitImplicitCastExpr(ImplicitCastExpr *S) {
330  VisitCastExpr(S);
331  ID.AddInteger(S->getValueKind());
332}
333
334void StmtProfiler::VisitExplicitCastExpr(ExplicitCastExpr *S) {
335  VisitCastExpr(S);
336  VisitType(S->getTypeAsWritten());
337}
338
339void StmtProfiler::VisitCStyleCastExpr(CStyleCastExpr *S) {
340  VisitExplicitCastExpr(S);
341}
342
343void StmtProfiler::VisitBinaryOperator(BinaryOperator *S) {
344  VisitExpr(S);
345  ID.AddInteger(S->getOpcode());
346}
347
348void StmtProfiler::VisitCompoundAssignOperator(CompoundAssignOperator *S) {
349  VisitBinaryOperator(S);
350}
351
352void StmtProfiler::VisitConditionalOperator(ConditionalOperator *S) {
353  VisitExpr(S);
354}
355
356void StmtProfiler::VisitBinaryConditionalOperator(BinaryConditionalOperator *S){
357  VisitExpr(S);
358}
359
360void StmtProfiler::VisitAddrLabelExpr(AddrLabelExpr *S) {
361  VisitExpr(S);
362  VisitDecl(S->getLabel());
363}
364
365void StmtProfiler::VisitStmtExpr(StmtExpr *S) {
366  VisitExpr(S);
367}
368
369void StmtProfiler::VisitShuffleVectorExpr(ShuffleVectorExpr *S) {
370  VisitExpr(S);
371}
372
373void StmtProfiler::VisitChooseExpr(ChooseExpr *S) {
374  VisitExpr(S);
375}
376
377void StmtProfiler::VisitGNUNullExpr(GNUNullExpr *S) {
378  VisitExpr(S);
379}
380
381void StmtProfiler::VisitVAArgExpr(VAArgExpr *S) {
382  VisitExpr(S);
383}
384
385void StmtProfiler::VisitInitListExpr(InitListExpr *S) {
386  if (S->getSyntacticForm()) {
387    VisitInitListExpr(S->getSyntacticForm());
388    return;
389  }
390
391  VisitExpr(S);
392}
393
394void StmtProfiler::VisitDesignatedInitExpr(DesignatedInitExpr *S) {
395  VisitExpr(S);
396  ID.AddBoolean(S->usesGNUSyntax());
397  for (DesignatedInitExpr::designators_iterator D = S->designators_begin(),
398                                             DEnd = S->designators_end();
399       D != DEnd; ++D) {
400    if (D->isFieldDesignator()) {
401      ID.AddInteger(0);
402      VisitName(D->getFieldName());
403      continue;
404    }
405
406    if (D->isArrayDesignator()) {
407      ID.AddInteger(1);
408    } else {
409      assert(D->isArrayRangeDesignator());
410      ID.AddInteger(2);
411    }
412    ID.AddInteger(D->getFirstExprIndex());
413  }
414}
415
416void StmtProfiler::VisitImplicitValueInitExpr(ImplicitValueInitExpr *S) {
417  VisitExpr(S);
418}
419
420void StmtProfiler::VisitExtVectorElementExpr(ExtVectorElementExpr *S) {
421  VisitExpr(S);
422  VisitName(&S->getAccessor());
423}
424
425void StmtProfiler::VisitBlockExpr(BlockExpr *S) {
426  VisitExpr(S);
427  VisitDecl(S->getBlockDecl());
428}
429
430void StmtProfiler::VisitBlockDeclRefExpr(BlockDeclRefExpr *S) {
431  VisitExpr(S);
432  VisitDecl(S->getDecl());
433  ID.AddBoolean(S->isByRef());
434  ID.AddBoolean(S->isConstQualAdded());
435}
436
437void StmtProfiler::VisitGenericSelectionExpr(GenericSelectionExpr *S) {
438  VisitExpr(S);
439  for (unsigned i = 0; i != S->getNumAssocs(); ++i) {
440    QualType T = S->getAssocType(i);
441    if (T.isNull())
442      ID.AddPointer(0);
443    else
444      VisitType(T);
445    VisitExpr(S->getAssocExpr(i));
446  }
447}
448
449static Stmt::StmtClass DecodeOperatorCall(CXXOperatorCallExpr *S,
450                                          UnaryOperatorKind &UnaryOp,
451                                          BinaryOperatorKind &BinaryOp) {
452  switch (S->getOperator()) {
453  case OO_None:
454  case OO_New:
455  case OO_Delete:
456  case OO_Array_New:
457  case OO_Array_Delete:
458  case OO_Arrow:
459  case OO_Call:
460  case OO_Conditional:
461  case NUM_OVERLOADED_OPERATORS:
462    llvm_unreachable("Invalid operator call kind");
463    return Stmt::ArraySubscriptExprClass;
464
465  case OO_Plus:
466    if (S->getNumArgs() == 1) {
467      UnaryOp = UO_Plus;
468      return Stmt::UnaryOperatorClass;
469    }
470
471    BinaryOp = BO_Add;
472    return Stmt::BinaryOperatorClass;
473
474  case OO_Minus:
475    if (S->getNumArgs() == 1) {
476      UnaryOp = UO_Minus;
477      return Stmt::UnaryOperatorClass;
478    }
479
480    BinaryOp = BO_Sub;
481    return Stmt::BinaryOperatorClass;
482
483  case OO_Star:
484    if (S->getNumArgs() == 1) {
485      UnaryOp = UO_Minus;
486      return Stmt::UnaryOperatorClass;
487    }
488
489    BinaryOp = BO_Sub;
490    return Stmt::BinaryOperatorClass;
491
492  case OO_Slash:
493    BinaryOp = BO_Div;
494    return Stmt::BinaryOperatorClass;
495
496  case OO_Percent:
497    BinaryOp = BO_Rem;
498    return Stmt::BinaryOperatorClass;
499
500  case OO_Caret:
501    BinaryOp = BO_Xor;
502    return Stmt::BinaryOperatorClass;
503
504  case OO_Amp:
505    if (S->getNumArgs() == 1) {
506      UnaryOp = UO_AddrOf;
507      return Stmt::UnaryOperatorClass;
508    }
509
510    BinaryOp = BO_And;
511    return Stmt::BinaryOperatorClass;
512
513  case OO_Pipe:
514    BinaryOp = BO_Or;
515    return Stmt::BinaryOperatorClass;
516
517  case OO_Tilde:
518    UnaryOp = UO_Not;
519    return Stmt::UnaryOperatorClass;
520
521  case OO_Exclaim:
522    UnaryOp = UO_LNot;
523    return Stmt::UnaryOperatorClass;
524
525  case OO_Equal:
526    BinaryOp = BO_Assign;
527    return Stmt::BinaryOperatorClass;
528
529  case OO_Less:
530    BinaryOp = BO_LT;
531    return Stmt::BinaryOperatorClass;
532
533  case OO_Greater:
534    BinaryOp = BO_GT;
535    return Stmt::BinaryOperatorClass;
536
537  case OO_PlusEqual:
538    BinaryOp = BO_AddAssign;
539    return Stmt::CompoundAssignOperatorClass;
540
541  case OO_MinusEqual:
542    BinaryOp = BO_SubAssign;
543    return Stmt::CompoundAssignOperatorClass;
544
545  case OO_StarEqual:
546    BinaryOp = BO_MulAssign;
547    return Stmt::CompoundAssignOperatorClass;
548
549  case OO_SlashEqual:
550    BinaryOp = BO_DivAssign;
551    return Stmt::CompoundAssignOperatorClass;
552
553  case OO_PercentEqual:
554    BinaryOp = BO_RemAssign;
555    return Stmt::CompoundAssignOperatorClass;
556
557  case OO_CaretEqual:
558    BinaryOp = BO_XorAssign;
559    return Stmt::CompoundAssignOperatorClass;
560
561  case OO_AmpEqual:
562    BinaryOp = BO_AndAssign;
563    return Stmt::CompoundAssignOperatorClass;
564
565  case OO_PipeEqual:
566    BinaryOp = BO_OrAssign;
567    return Stmt::CompoundAssignOperatorClass;
568
569  case OO_LessLess:
570    BinaryOp = BO_Shl;
571    return Stmt::BinaryOperatorClass;
572
573  case OO_GreaterGreater:
574    BinaryOp = BO_Shr;
575    return Stmt::BinaryOperatorClass;
576
577  case OO_LessLessEqual:
578    BinaryOp = BO_ShlAssign;
579    return Stmt::CompoundAssignOperatorClass;
580
581  case OO_GreaterGreaterEqual:
582    BinaryOp = BO_ShrAssign;
583    return Stmt::CompoundAssignOperatorClass;
584
585  case OO_EqualEqual:
586    BinaryOp = BO_EQ;
587    return Stmt::BinaryOperatorClass;
588
589  case OO_ExclaimEqual:
590    BinaryOp = BO_NE;
591    return Stmt::BinaryOperatorClass;
592
593  case OO_LessEqual:
594    BinaryOp = BO_LE;
595    return Stmt::BinaryOperatorClass;
596
597  case OO_GreaterEqual:
598    BinaryOp = BO_GE;
599    return Stmt::BinaryOperatorClass;
600
601  case OO_AmpAmp:
602    BinaryOp = BO_LAnd;
603    return Stmt::BinaryOperatorClass;
604
605  case OO_PipePipe:
606    BinaryOp = BO_LOr;
607    return Stmt::BinaryOperatorClass;
608
609  case OO_PlusPlus:
610    UnaryOp = S->getNumArgs() == 1? UO_PreInc
611                                  : UO_PostInc;
612    return Stmt::UnaryOperatorClass;
613
614  case OO_MinusMinus:
615    UnaryOp = S->getNumArgs() == 1? UO_PreDec
616                                  : UO_PostDec;
617    return Stmt::UnaryOperatorClass;
618
619  case OO_Comma:
620    BinaryOp = BO_Comma;
621    return Stmt::BinaryOperatorClass;
622
623
624  case OO_ArrowStar:
625    BinaryOp = BO_PtrMemI;
626    return Stmt::BinaryOperatorClass;
627
628  case OO_Subscript:
629    return Stmt::ArraySubscriptExprClass;
630  }
631
632  llvm_unreachable("Invalid overloaded operator expression");
633}
634
635
636void StmtProfiler::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *S) {
637  if (S->isTypeDependent()) {
638    // Type-dependent operator calls are profiled like their underlying
639    // syntactic operator.
640    UnaryOperatorKind UnaryOp = UO_Extension;
641    BinaryOperatorKind BinaryOp = BO_Comma;
642    Stmt::StmtClass SC = DecodeOperatorCall(S, UnaryOp, BinaryOp);
643
644    ID.AddInteger(SC);
645    for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
646      Visit(S->getArg(I));
647    if (SC == Stmt::UnaryOperatorClass)
648      ID.AddInteger(UnaryOp);
649    else if (SC == Stmt::BinaryOperatorClass ||
650             SC == Stmt::CompoundAssignOperatorClass)
651      ID.AddInteger(BinaryOp);
652    else
653      assert(SC == Stmt::ArraySubscriptExprClass);
654
655    return;
656  }
657
658  VisitCallExpr(S);
659  ID.AddInteger(S->getOperator());
660}
661
662void StmtProfiler::VisitCXXMemberCallExpr(CXXMemberCallExpr *S) {
663  VisitCallExpr(S);
664}
665
666void StmtProfiler::VisitCUDAKernelCallExpr(CUDAKernelCallExpr *S) {
667  VisitCallExpr(S);
668}
669
670void StmtProfiler::VisitCXXNamedCastExpr(CXXNamedCastExpr *S) {
671  VisitExplicitCastExpr(S);
672}
673
674void StmtProfiler::VisitCXXStaticCastExpr(CXXStaticCastExpr *S) {
675  VisitCXXNamedCastExpr(S);
676}
677
678void StmtProfiler::VisitCXXDynamicCastExpr(CXXDynamicCastExpr *S) {
679  VisitCXXNamedCastExpr(S);
680}
681
682void StmtProfiler::VisitCXXReinterpretCastExpr(CXXReinterpretCastExpr *S) {
683  VisitCXXNamedCastExpr(S);
684}
685
686void StmtProfiler::VisitCXXConstCastExpr(CXXConstCastExpr *S) {
687  VisitCXXNamedCastExpr(S);
688}
689
690void StmtProfiler::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *S) {
691  VisitExpr(S);
692  ID.AddBoolean(S->getValue());
693}
694
695void StmtProfiler::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *S) {
696  VisitExpr(S);
697}
698
699void StmtProfiler::VisitCXXTypeidExpr(CXXTypeidExpr *S) {
700  VisitExpr(S);
701  if (S->isTypeOperand())
702    VisitType(S->getTypeOperand());
703}
704
705void StmtProfiler::VisitCXXUuidofExpr(CXXUuidofExpr *S) {
706  VisitExpr(S);
707  if (S->isTypeOperand())
708    VisitType(S->getTypeOperand());
709}
710
711void StmtProfiler::VisitCXXThisExpr(CXXThisExpr *S) {
712  VisitExpr(S);
713}
714
715void StmtProfiler::VisitCXXThrowExpr(CXXThrowExpr *S) {
716  VisitExpr(S);
717}
718
719void StmtProfiler::VisitCXXDefaultArgExpr(CXXDefaultArgExpr *S) {
720  VisitExpr(S);
721  VisitDecl(S->getParam());
722}
723
724void StmtProfiler::VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *S) {
725  VisitExpr(S);
726  VisitDecl(
727         const_cast<CXXDestructorDecl *>(S->getTemporary()->getDestructor()));
728}
729
730void StmtProfiler::VisitCXXConstructExpr(CXXConstructExpr *S) {
731  VisitExpr(S);
732  VisitDecl(S->getConstructor());
733  ID.AddBoolean(S->isElidable());
734}
735
736void StmtProfiler::VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr *S) {
737  VisitExplicitCastExpr(S);
738}
739
740void StmtProfiler::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *S) {
741  VisitCXXConstructExpr(S);
742}
743
744void StmtProfiler::VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *S) {
745  VisitExpr(S);
746}
747
748void StmtProfiler::VisitCXXDeleteExpr(CXXDeleteExpr *S) {
749  VisitExpr(S);
750  ID.AddBoolean(S->isGlobalDelete());
751  ID.AddBoolean(S->isArrayForm());
752  VisitDecl(S->getOperatorDelete());
753}
754
755
756void StmtProfiler::VisitCXXNewExpr(CXXNewExpr *S) {
757  VisitExpr(S);
758  VisitType(S->getAllocatedType());
759  VisitDecl(S->getOperatorNew());
760  VisitDecl(S->getOperatorDelete());
761  VisitDecl(S->getConstructor());
762  ID.AddBoolean(S->isArray());
763  ID.AddInteger(S->getNumPlacementArgs());
764  ID.AddBoolean(S->isGlobalNew());
765  ID.AddBoolean(S->isParenTypeId());
766  ID.AddBoolean(S->hasInitializer());
767  ID.AddInteger(S->getNumConstructorArgs());
768}
769
770void StmtProfiler::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *S) {
771  VisitExpr(S);
772  ID.AddBoolean(S->isArrow());
773  VisitNestedNameSpecifier(S->getQualifier());
774  VisitType(S->getDestroyedType());
775}
776
777void StmtProfiler::VisitOverloadExpr(OverloadExpr *S) {
778  VisitExpr(S);
779  VisitNestedNameSpecifier(S->getQualifier());
780  VisitName(S->getName());
781  ID.AddBoolean(S->hasExplicitTemplateArgs());
782  if (S->hasExplicitTemplateArgs())
783    VisitTemplateArguments(S->getExplicitTemplateArgs().getTemplateArgs(),
784                           S->getExplicitTemplateArgs().NumTemplateArgs);
785}
786
787void
788StmtProfiler::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *S) {
789  VisitOverloadExpr(S);
790}
791
792void StmtProfiler::VisitUnaryTypeTraitExpr(UnaryTypeTraitExpr *S) {
793  VisitExpr(S);
794  ID.AddInteger(S->getTrait());
795  VisitType(S->getQueriedType());
796}
797
798void StmtProfiler::VisitBinaryTypeTraitExpr(BinaryTypeTraitExpr *S) {
799  VisitExpr(S);
800  ID.AddInteger(S->getTrait());
801  VisitType(S->getLhsType());
802  VisitType(S->getRhsType());
803}
804
805void
806StmtProfiler::VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *S) {
807  VisitExpr(S);
808  VisitName(S->getDeclName());
809  VisitNestedNameSpecifier(S->getQualifier());
810  ID.AddBoolean(S->hasExplicitTemplateArgs());
811  if (S->hasExplicitTemplateArgs())
812    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
813}
814
815void StmtProfiler::VisitExprWithCleanups(ExprWithCleanups *S) {
816  VisitExpr(S);
817}
818
819void
820StmtProfiler::VisitCXXUnresolvedConstructExpr(CXXUnresolvedConstructExpr *S) {
821  VisitExpr(S);
822  VisitType(S->getTypeAsWritten());
823}
824
825void
826StmtProfiler::VisitCXXDependentScopeMemberExpr(CXXDependentScopeMemberExpr *S) {
827  ID.AddBoolean(S->isImplicitAccess());
828  if (!S->isImplicitAccess()) {
829    VisitExpr(S);
830    ID.AddBoolean(S->isArrow());
831  }
832  VisitNestedNameSpecifier(S->getQualifier());
833  VisitName(S->getMember());
834  ID.AddBoolean(S->hasExplicitTemplateArgs());
835  if (S->hasExplicitTemplateArgs())
836    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
837}
838
839void StmtProfiler::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *S) {
840  ID.AddBoolean(S->isImplicitAccess());
841  if (!S->isImplicitAccess()) {
842    VisitExpr(S);
843    ID.AddBoolean(S->isArrow());
844  }
845  VisitNestedNameSpecifier(S->getQualifier());
846  VisitName(S->getMemberName());
847  ID.AddBoolean(S->hasExplicitTemplateArgs());
848  if (S->hasExplicitTemplateArgs())
849    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
850}
851
852void StmtProfiler::VisitCXXNoexceptExpr(CXXNoexceptExpr *S) {
853  VisitExpr(S);
854}
855
856void StmtProfiler::VisitPackExpansionExpr(PackExpansionExpr *S) {
857  VisitExpr(S);
858}
859
860void StmtProfiler::VisitSizeOfPackExpr(SizeOfPackExpr *S) {
861  VisitExpr(S);
862  VisitDecl(S->getPack());
863}
864
865void StmtProfiler::VisitSubstNonTypeTemplateParmPackExpr(
866                                         SubstNonTypeTemplateParmPackExpr *S) {
867  VisitExpr(S);
868  VisitDecl(S->getParameterPack());
869  VisitTemplateArgument(S->getArgumentPack());
870}
871
872void StmtProfiler::VisitOpaqueValueExpr(OpaqueValueExpr *E) {
873  VisitExpr(E);
874}
875
876void StmtProfiler::VisitObjCStringLiteral(ObjCStringLiteral *S) {
877  VisitExpr(S);
878}
879
880void StmtProfiler::VisitObjCEncodeExpr(ObjCEncodeExpr *S) {
881  VisitExpr(S);
882  VisitType(S->getEncodedType());
883}
884
885void StmtProfiler::VisitObjCSelectorExpr(ObjCSelectorExpr *S) {
886  VisitExpr(S);
887  VisitName(S->getSelector());
888}
889
890void StmtProfiler::VisitObjCProtocolExpr(ObjCProtocolExpr *S) {
891  VisitExpr(S);
892  VisitDecl(S->getProtocol());
893}
894
895void StmtProfiler::VisitObjCIvarRefExpr(ObjCIvarRefExpr *S) {
896  VisitExpr(S);
897  VisitDecl(S->getDecl());
898  ID.AddBoolean(S->isArrow());
899  ID.AddBoolean(S->isFreeIvar());
900}
901
902void StmtProfiler::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *S) {
903  VisitExpr(S);
904  if (S->isImplicitProperty()) {
905    VisitDecl(S->getImplicitPropertyGetter());
906    VisitDecl(S->getImplicitPropertySetter());
907  } else {
908    VisitDecl(S->getExplicitProperty());
909  }
910  if (S->isSuperReceiver()) {
911    ID.AddBoolean(S->isSuperReceiver());
912    VisitType(S->getSuperReceiverType());
913  }
914}
915
916void StmtProfiler::VisitObjCMessageExpr(ObjCMessageExpr *S) {
917  VisitExpr(S);
918  VisitName(S->getSelector());
919  VisitDecl(S->getMethodDecl());
920}
921
922void StmtProfiler::VisitObjCIsaExpr(ObjCIsaExpr *S) {
923  VisitExpr(S);
924  ID.AddBoolean(S->isArrow());
925}
926
927void StmtProfiler::VisitDecl(Decl *D) {
928  ID.AddInteger(D? D->getKind() : 0);
929
930  if (Canonical && D) {
931    if (NonTypeTemplateParmDecl *NTTP = dyn_cast<NonTypeTemplateParmDecl>(D)) {
932      ID.AddInteger(NTTP->getDepth());
933      ID.AddInteger(NTTP->getIndex());
934      ID.AddBoolean(NTTP->isParameterPack());
935      VisitType(NTTP->getType());
936      return;
937    }
938
939    if (ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) {
940      // The Itanium C++ ABI uses the type of a parameter when mangling
941      // expressions that involve function parameters, so we will use the
942      // parameter's type for establishing function parameter identity. That
943      // way, our definition of "equivalent" (per C++ [temp.over.link])
944      // matches the definition of "equivalent" used for name mangling.
945      VisitType(Parm->getType());
946      return;
947    }
948
949    if (TemplateTemplateParmDecl *TTP = dyn_cast<TemplateTemplateParmDecl>(D)) {
950      ID.AddInteger(TTP->getDepth());
951      ID.AddInteger(TTP->getIndex());
952      ID.AddBoolean(TTP->isParameterPack());
953      return;
954    }
955  }
956
957  ID.AddPointer(D? D->getCanonicalDecl() : 0);
958}
959
960void StmtProfiler::VisitType(QualType T) {
961  if (Canonical)
962    T = Context.getCanonicalType(T);
963
964  ID.AddPointer(T.getAsOpaquePtr());
965}
966
967void StmtProfiler::VisitName(DeclarationName Name) {
968  ID.AddPointer(Name.getAsOpaquePtr());
969}
970
971void StmtProfiler::VisitNestedNameSpecifier(NestedNameSpecifier *NNS) {
972  if (Canonical)
973    NNS = Context.getCanonicalNestedNameSpecifier(NNS);
974  ID.AddPointer(NNS);
975}
976
977void StmtProfiler::VisitTemplateName(TemplateName Name) {
978  if (Canonical)
979    Name = Context.getCanonicalTemplateName(Name);
980
981  Name.Profile(ID);
982}
983
984void StmtProfiler::VisitTemplateArguments(const TemplateArgumentLoc *Args,
985                                          unsigned NumArgs) {
986  ID.AddInteger(NumArgs);
987  for (unsigned I = 0; I != NumArgs; ++I)
988    VisitTemplateArgument(Args[I].getArgument());
989}
990
991void StmtProfiler::VisitTemplateArgument(const TemplateArgument &Arg) {
992  // Mostly repetitive with TemplateArgument::Profile!
993  ID.AddInteger(Arg.getKind());
994  switch (Arg.getKind()) {
995  case TemplateArgument::Null:
996    break;
997
998  case TemplateArgument::Type:
999    VisitType(Arg.getAsType());
1000    break;
1001
1002  case TemplateArgument::Template:
1003  case TemplateArgument::TemplateExpansion:
1004    VisitTemplateName(Arg.getAsTemplateOrTemplatePattern());
1005    break;
1006
1007  case TemplateArgument::Declaration:
1008    VisitDecl(Arg.getAsDecl());
1009    break;
1010
1011  case TemplateArgument::Integral:
1012    Arg.getAsIntegral()->Profile(ID);
1013    VisitType(Arg.getIntegralType());
1014    break;
1015
1016  case TemplateArgument::Expression:
1017    Visit(Arg.getAsExpr());
1018    break;
1019
1020  case TemplateArgument::Pack:
1021    const TemplateArgument *Pack = Arg.pack_begin();
1022    for (unsigned i = 0, e = Arg.pack_size(); i != e; ++i)
1023      VisitTemplateArgument(Pack[i]);
1024    break;
1025  }
1026}
1027
1028void Stmt::Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
1029                   bool Canonical) {
1030  StmtProfiler Profiler(ID, Context, Canonical);
1031  Profiler.Visit(this);
1032}
1033