StmtProfile.cpp revision 6b5a61b6dc400027fd793dcadceeb9da944a37ea 
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_iterator C = S->child_begin(), CEnd = S->child_end();
72       C != CEnd; ++C)
73    Visit(*C);
74}
75
76void StmtProfiler::VisitDeclStmt(DeclStmt *S) {
77  VisitStmt(S);
78  for (DeclStmt::decl_iterator D = S->decl_begin(), DEnd = S->decl_end();
79       D != DEnd; ++D)
80    VisitDecl(*D);
81}
82
83void StmtProfiler::VisitNullStmt(NullStmt *S) {
84  VisitStmt(S);
85}
86
87void StmtProfiler::VisitCompoundStmt(CompoundStmt *S) {
88  VisitStmt(S);
89}
90
91void StmtProfiler::VisitSwitchCase(SwitchCase *S) {
92  VisitStmt(S);
93}
94
95void StmtProfiler::VisitCaseStmt(CaseStmt *S) {
96  VisitStmt(S);
97}
98
99void StmtProfiler::VisitDefaultStmt(DefaultStmt *S) {
100  VisitStmt(S);
101}
102
103void StmtProfiler::VisitLabelStmt(LabelStmt *S) {
104  VisitStmt(S);
105  VisitName(S->getID());
106}
107
108void StmtProfiler::VisitIfStmt(IfStmt *S) {
109  VisitStmt(S);
110  VisitDecl(S->getConditionVariable());
111}
112
113void StmtProfiler::VisitSwitchStmt(SwitchStmt *S) {
114  VisitStmt(S);
115  VisitDecl(S->getConditionVariable());
116}
117
118void StmtProfiler::VisitWhileStmt(WhileStmt *S) {
119  VisitStmt(S);
120  VisitDecl(S->getConditionVariable());
121}
122
123void StmtProfiler::VisitDoStmt(DoStmt *S) {
124  VisitStmt(S);
125}
126
127void StmtProfiler::VisitForStmt(ForStmt *S) {
128  VisitStmt(S);
129}
130
131void StmtProfiler::VisitGotoStmt(GotoStmt *S) {
132  VisitStmt(S);
133  VisitName(S->getLabel()->getID());
134}
135
136void StmtProfiler::VisitIndirectGotoStmt(IndirectGotoStmt *S) {
137  VisitStmt(S);
138}
139
140void StmtProfiler::VisitContinueStmt(ContinueStmt *S) {
141  VisitStmt(S);
142}
143
144void StmtProfiler::VisitBreakStmt(BreakStmt *S) {
145  VisitStmt(S);
146}
147
148void StmtProfiler::VisitReturnStmt(ReturnStmt *S) {
149  VisitStmt(S);
150}
151
152void StmtProfiler::VisitAsmStmt(AsmStmt *S) {
153  VisitStmt(S);
154  ID.AddBoolean(S->isVolatile());
155  ID.AddBoolean(S->isSimple());
156  VisitStringLiteral(S->getAsmString());
157  ID.AddInteger(S->getNumOutputs());
158  for (unsigned I = 0, N = S->getNumOutputs(); I != N; ++I) {
159    ID.AddString(S->getOutputName(I));
160    VisitStringLiteral(S->getOutputConstraintLiteral(I));
161  }
162  ID.AddInteger(S->getNumInputs());
163  for (unsigned I = 0, N = S->getNumInputs(); I != N; ++I) {
164    ID.AddString(S->getInputName(I));
165    VisitStringLiteral(S->getInputConstraintLiteral(I));
166  }
167  ID.AddInteger(S->getNumClobbers());
168  for (unsigned I = 0, N = S->getNumClobbers(); I != N; ++I)
169    VisitStringLiteral(S->getClobber(I));
170}
171
172void StmtProfiler::VisitCXXCatchStmt(CXXCatchStmt *S) {
173  VisitStmt(S);
174  VisitType(S->getCaughtType());
175}
176
177void StmtProfiler::VisitCXXTryStmt(CXXTryStmt *S) {
178  VisitStmt(S);
179}
180
181void StmtProfiler::VisitObjCForCollectionStmt(ObjCForCollectionStmt *S) {
182  VisitStmt(S);
183}
184
185void StmtProfiler::VisitObjCAtCatchStmt(ObjCAtCatchStmt *S) {
186  VisitStmt(S);
187  ID.AddBoolean(S->hasEllipsis());
188  if (S->getCatchParamDecl())
189    VisitType(S->getCatchParamDecl()->getType());
190}
191
192void StmtProfiler::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *S) {
193  VisitStmt(S);
194}
195
196void StmtProfiler::VisitObjCAtTryStmt(ObjCAtTryStmt *S) {
197  VisitStmt(S);
198}
199
200void StmtProfiler::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
201  VisitStmt(S);
202}
203
204void StmtProfiler::VisitObjCAtThrowStmt(ObjCAtThrowStmt *S) {
205  VisitStmt(S);
206}
207
208void StmtProfiler::VisitExpr(Expr *S) {
209  VisitStmt(S);
210}
211
212void StmtProfiler::VisitDeclRefExpr(DeclRefExpr *S) {
213  VisitExpr(S);
214  if (!Canonical)
215    VisitNestedNameSpecifier(S->getQualifier());
216  VisitDecl(S->getDecl());
217  if (!Canonical)
218    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
219}
220
221void StmtProfiler::VisitPredefinedExpr(PredefinedExpr *S) {
222  VisitExpr(S);
223  ID.AddInteger(S->getIdentType());
224}
225
226void StmtProfiler::VisitIntegerLiteral(IntegerLiteral *S) {
227  VisitExpr(S);
228  S->getValue().Profile(ID);
229}
230
231void StmtProfiler::VisitCharacterLiteral(CharacterLiteral *S) {
232  VisitExpr(S);
233  ID.AddBoolean(S->isWide());
234  ID.AddInteger(S->getValue());
235}
236
237void StmtProfiler::VisitFloatingLiteral(FloatingLiteral *S) {
238  VisitExpr(S);
239  S->getValue().Profile(ID);
240  ID.AddBoolean(S->isExact());
241}
242
243void StmtProfiler::VisitImaginaryLiteral(ImaginaryLiteral *S) {
244  VisitExpr(S);
245}
246
247void StmtProfiler::VisitStringLiteral(StringLiteral *S) {
248  VisitExpr(S);
249  ID.AddString(S->getString());
250  ID.AddBoolean(S->isWide());
251}
252
253void StmtProfiler::VisitParenExpr(ParenExpr *S) {
254  VisitExpr(S);
255}
256
257void StmtProfiler::VisitParenListExpr(ParenListExpr *S) {
258  VisitExpr(S);
259}
260
261void StmtProfiler::VisitUnaryOperator(UnaryOperator *S) {
262  VisitExpr(S);
263  ID.AddInteger(S->getOpcode());
264}
265
266void StmtProfiler::VisitOffsetOfExpr(OffsetOfExpr *S) {
267  VisitType(S->getTypeSourceInfo()->getType());
268  unsigned n = S->getNumComponents();
269  for (unsigned i = 0; i < n; ++i) {
270    const OffsetOfExpr::OffsetOfNode& ON = S->getComponent(i);
271    ID.AddInteger(ON.getKind());
272    switch (ON.getKind()) {
273    case OffsetOfExpr::OffsetOfNode::Array:
274      // Expressions handled below.
275      break;
276
277    case OffsetOfExpr::OffsetOfNode::Field:
278      VisitDecl(ON.getField());
279      break;
280
281    case OffsetOfExpr::OffsetOfNode::Identifier:
282      ID.AddPointer(ON.getFieldName());
283      break;
284
285    case OffsetOfExpr::OffsetOfNode::Base:
286      // These nodes are implicit, and therefore don't need profiling.
287      break;
288    }
289  }
290
291  VisitExpr(S);
292}
293
294void StmtProfiler::VisitSizeOfAlignOfExpr(SizeOfAlignOfExpr *S) {
295  VisitExpr(S);
296  ID.AddBoolean(S->isSizeOf());
297  if (S->isArgumentType())
298    VisitType(S->getArgumentType());
299}
300
301void StmtProfiler::VisitArraySubscriptExpr(ArraySubscriptExpr *S) {
302  VisitExpr(S);
303}
304
305void StmtProfiler::VisitCallExpr(CallExpr *S) {
306  VisitExpr(S);
307}
308
309void StmtProfiler::VisitMemberExpr(MemberExpr *S) {
310  VisitExpr(S);
311  VisitDecl(S->getMemberDecl());
312  if (!Canonical)
313    VisitNestedNameSpecifier(S->getQualifier());
314  ID.AddBoolean(S->isArrow());
315}
316
317void StmtProfiler::VisitCompoundLiteralExpr(CompoundLiteralExpr *S) {
318  VisitExpr(S);
319  ID.AddBoolean(S->isFileScope());
320}
321
322void StmtProfiler::VisitCastExpr(CastExpr *S) {
323  VisitExpr(S);
324}
325
326void StmtProfiler::VisitImplicitCastExpr(ImplicitCastExpr *S) {
327  VisitCastExpr(S);
328  ID.AddInteger(S->getValueKind());
329}
330
331void StmtProfiler::VisitExplicitCastExpr(ExplicitCastExpr *S) {
332  VisitCastExpr(S);
333  VisitType(S->getTypeAsWritten());
334}
335
336void StmtProfiler::VisitCStyleCastExpr(CStyleCastExpr *S) {
337  VisitExplicitCastExpr(S);
338}
339
340void StmtProfiler::VisitBinaryOperator(BinaryOperator *S) {
341  VisitExpr(S);
342  ID.AddInteger(S->getOpcode());
343}
344
345void StmtProfiler::VisitCompoundAssignOperator(CompoundAssignOperator *S) {
346  VisitBinaryOperator(S);
347}
348
349void StmtProfiler::VisitConditionalOperator(ConditionalOperator *S) {
350  VisitExpr(S);
351}
352
353void StmtProfiler::VisitAddrLabelExpr(AddrLabelExpr *S) {
354  VisitExpr(S);
355  VisitName(S->getLabel()->getID());
356}
357
358void StmtProfiler::VisitStmtExpr(StmtExpr *S) {
359  VisitExpr(S);
360}
361
362void StmtProfiler::VisitShuffleVectorExpr(ShuffleVectorExpr *S) {
363  VisitExpr(S);
364}
365
366void StmtProfiler::VisitChooseExpr(ChooseExpr *S) {
367  VisitExpr(S);
368}
369
370void StmtProfiler::VisitGNUNullExpr(GNUNullExpr *S) {
371  VisitExpr(S);
372}
373
374void StmtProfiler::VisitVAArgExpr(VAArgExpr *S) {
375  VisitExpr(S);
376}
377
378void StmtProfiler::VisitInitListExpr(InitListExpr *S) {
379  if (S->getSyntacticForm()) {
380    VisitInitListExpr(S->getSyntacticForm());
381    return;
382  }
383
384  VisitExpr(S);
385}
386
387void StmtProfiler::VisitDesignatedInitExpr(DesignatedInitExpr *S) {
388  VisitExpr(S);
389  ID.AddBoolean(S->usesGNUSyntax());
390  for (DesignatedInitExpr::designators_iterator D = S->designators_begin(),
391                                             DEnd = S->designators_end();
392       D != DEnd; ++D) {
393    if (D->isFieldDesignator()) {
394      ID.AddInteger(0);
395      VisitName(D->getFieldName());
396      continue;
397    }
398
399    if (D->isArrayDesignator()) {
400      ID.AddInteger(1);
401    } else {
402      assert(D->isArrayRangeDesignator());
403      ID.AddInteger(2);
404    }
405    ID.AddInteger(D->getFirstExprIndex());
406  }
407}
408
409void StmtProfiler::VisitImplicitValueInitExpr(ImplicitValueInitExpr *S) {
410  VisitExpr(S);
411}
412
413void StmtProfiler::VisitExtVectorElementExpr(ExtVectorElementExpr *S) {
414  VisitExpr(S);
415  VisitName(&S->getAccessor());
416}
417
418void StmtProfiler::VisitBlockExpr(BlockExpr *S) {
419  VisitExpr(S);
420  VisitDecl(S->getBlockDecl());
421}
422
423void StmtProfiler::VisitBlockDeclRefExpr(BlockDeclRefExpr *S) {
424  VisitExpr(S);
425  VisitDecl(S->getDecl());
426  ID.AddBoolean(S->isByRef());
427  ID.AddBoolean(S->isConstQualAdded());
428}
429
430static Stmt::StmtClass DecodeOperatorCall(CXXOperatorCallExpr *S,
431                                          UnaryOperatorKind &UnaryOp,
432                                          BinaryOperatorKind &BinaryOp) {
433  switch (S->getOperator()) {
434  case OO_None:
435  case OO_New:
436  case OO_Delete:
437  case OO_Array_New:
438  case OO_Array_Delete:
439  case OO_Arrow:
440  case OO_Call:
441  case OO_Conditional:
442  case NUM_OVERLOADED_OPERATORS:
443    llvm_unreachable("Invalid operator call kind");
444    return Stmt::ArraySubscriptExprClass;
445
446  case OO_Plus:
447    if (S->getNumArgs() == 1) {
448      UnaryOp = UO_Plus;
449      return Stmt::UnaryOperatorClass;
450    }
451
452    BinaryOp = BO_Add;
453    return Stmt::BinaryOperatorClass;
454
455  case OO_Minus:
456    if (S->getNumArgs() == 1) {
457      UnaryOp = UO_Minus;
458      return Stmt::UnaryOperatorClass;
459    }
460
461    BinaryOp = BO_Sub;
462    return Stmt::BinaryOperatorClass;
463
464  case OO_Star:
465    if (S->getNumArgs() == 1) {
466      UnaryOp = UO_Minus;
467      return Stmt::UnaryOperatorClass;
468    }
469
470    BinaryOp = BO_Sub;
471    return Stmt::BinaryOperatorClass;
472
473  case OO_Slash:
474    BinaryOp = BO_Div;
475    return Stmt::BinaryOperatorClass;
476
477  case OO_Percent:
478    BinaryOp = BO_Rem;
479    return Stmt::BinaryOperatorClass;
480
481  case OO_Caret:
482    BinaryOp = BO_Xor;
483    return Stmt::BinaryOperatorClass;
484
485  case OO_Amp:
486    if (S->getNumArgs() == 1) {
487      UnaryOp = UO_AddrOf;
488      return Stmt::UnaryOperatorClass;
489    }
490
491    BinaryOp = BO_And;
492    return Stmt::BinaryOperatorClass;
493
494  case OO_Pipe:
495    BinaryOp = BO_Or;
496    return Stmt::BinaryOperatorClass;
497
498  case OO_Tilde:
499    UnaryOp = UO_Not;
500    return Stmt::UnaryOperatorClass;
501
502  case OO_Exclaim:
503    UnaryOp = UO_LNot;
504    return Stmt::UnaryOperatorClass;
505
506  case OO_Equal:
507    BinaryOp = BO_Assign;
508    return Stmt::BinaryOperatorClass;
509
510  case OO_Less:
511    BinaryOp = BO_LT;
512    return Stmt::BinaryOperatorClass;
513
514  case OO_Greater:
515    BinaryOp = BO_GT;
516    return Stmt::BinaryOperatorClass;
517
518  case OO_PlusEqual:
519    BinaryOp = BO_AddAssign;
520    return Stmt::CompoundAssignOperatorClass;
521
522  case OO_MinusEqual:
523    BinaryOp = BO_SubAssign;
524    return Stmt::CompoundAssignOperatorClass;
525
526  case OO_StarEqual:
527    BinaryOp = BO_MulAssign;
528    return Stmt::CompoundAssignOperatorClass;
529
530  case OO_SlashEqual:
531    BinaryOp = BO_DivAssign;
532    return Stmt::CompoundAssignOperatorClass;
533
534  case OO_PercentEqual:
535    BinaryOp = BO_RemAssign;
536    return Stmt::CompoundAssignOperatorClass;
537
538  case OO_CaretEqual:
539    BinaryOp = BO_XorAssign;
540    return Stmt::CompoundAssignOperatorClass;
541
542  case OO_AmpEqual:
543    BinaryOp = BO_AndAssign;
544    return Stmt::CompoundAssignOperatorClass;
545
546  case OO_PipeEqual:
547    BinaryOp = BO_OrAssign;
548    return Stmt::CompoundAssignOperatorClass;
549
550  case OO_LessLess:
551    BinaryOp = BO_Shl;
552    return Stmt::BinaryOperatorClass;
553
554  case OO_GreaterGreater:
555    BinaryOp = BO_Shr;
556    return Stmt::BinaryOperatorClass;
557
558  case OO_LessLessEqual:
559    BinaryOp = BO_ShlAssign;
560    return Stmt::CompoundAssignOperatorClass;
561
562  case OO_GreaterGreaterEqual:
563    BinaryOp = BO_ShrAssign;
564    return Stmt::CompoundAssignOperatorClass;
565
566  case OO_EqualEqual:
567    BinaryOp = BO_EQ;
568    return Stmt::BinaryOperatorClass;
569
570  case OO_ExclaimEqual:
571    BinaryOp = BO_NE;
572    return Stmt::BinaryOperatorClass;
573
574  case OO_LessEqual:
575    BinaryOp = BO_LE;
576    return Stmt::BinaryOperatorClass;
577
578  case OO_GreaterEqual:
579    BinaryOp = BO_GE;
580    return Stmt::BinaryOperatorClass;
581
582  case OO_AmpAmp:
583    BinaryOp = BO_LAnd;
584    return Stmt::BinaryOperatorClass;
585
586  case OO_PipePipe:
587    BinaryOp = BO_LOr;
588    return Stmt::BinaryOperatorClass;
589
590  case OO_PlusPlus:
591    UnaryOp = S->getNumArgs() == 1? UO_PreInc
592                                  : UO_PostInc;
593    return Stmt::UnaryOperatorClass;
594
595  case OO_MinusMinus:
596    UnaryOp = S->getNumArgs() == 1? UO_PreDec
597                                  : UO_PostDec;
598    return Stmt::UnaryOperatorClass;
599
600  case OO_Comma:
601    BinaryOp = BO_Comma;
602    return Stmt::BinaryOperatorClass;
603
604
605  case OO_ArrowStar:
606    BinaryOp = BO_PtrMemI;
607    return Stmt::BinaryOperatorClass;
608
609  case OO_Subscript:
610    return Stmt::ArraySubscriptExprClass;
611  }
612
613  llvm_unreachable("Invalid overloaded operator expression");
614}
615
616
617void StmtProfiler::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *S) {
618  if (S->isTypeDependent()) {
619    // Type-dependent operator calls are profiled like their underlying
620    // syntactic operator.
621    UnaryOperatorKind UnaryOp = UO_Extension;
622    BinaryOperatorKind BinaryOp = BO_Comma;
623    Stmt::StmtClass SC = DecodeOperatorCall(S, UnaryOp, BinaryOp);
624
625    ID.AddInteger(SC);
626    for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
627      Visit(S->getArg(I));
628    if (SC == Stmt::UnaryOperatorClass)
629      ID.AddInteger(UnaryOp);
630    else if (SC == Stmt::BinaryOperatorClass ||
631             SC == Stmt::CompoundAssignOperatorClass)
632      ID.AddInteger(BinaryOp);
633    else
634      assert(SC == Stmt::ArraySubscriptExprClass);
635
636    return;
637  }
638
639  VisitCallExpr(S);
640  ID.AddInteger(S->getOperator());
641}
642
643void StmtProfiler::VisitCXXMemberCallExpr(CXXMemberCallExpr *S) {
644  VisitCallExpr(S);
645}
646
647void StmtProfiler::VisitCXXNamedCastExpr(CXXNamedCastExpr *S) {
648  VisitExplicitCastExpr(S);
649}
650
651void StmtProfiler::VisitCXXStaticCastExpr(CXXStaticCastExpr *S) {
652  VisitCXXNamedCastExpr(S);
653}
654
655void StmtProfiler::VisitCXXDynamicCastExpr(CXXDynamicCastExpr *S) {
656  VisitCXXNamedCastExpr(S);
657}
658
659void StmtProfiler::VisitCXXReinterpretCastExpr(CXXReinterpretCastExpr *S) {
660  VisitCXXNamedCastExpr(S);
661}
662
663void StmtProfiler::VisitCXXConstCastExpr(CXXConstCastExpr *S) {
664  VisitCXXNamedCastExpr(S);
665}
666
667void StmtProfiler::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *S) {
668  VisitExpr(S);
669  ID.AddBoolean(S->getValue());
670}
671
672void StmtProfiler::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *S) {
673  VisitExpr(S);
674}
675
676void StmtProfiler::VisitCXXTypeidExpr(CXXTypeidExpr *S) {
677  VisitExpr(S);
678  if (S->isTypeOperand())
679    VisitType(S->getTypeOperand());
680}
681
682void StmtProfiler::VisitCXXUuidofExpr(CXXUuidofExpr *S) {
683  VisitExpr(S);
684  if (S->isTypeOperand())
685    VisitType(S->getTypeOperand());
686}
687
688void StmtProfiler::VisitCXXThisExpr(CXXThisExpr *S) {
689  VisitExpr(S);
690}
691
692void StmtProfiler::VisitCXXThrowExpr(CXXThrowExpr *S) {
693  VisitExpr(S);
694}
695
696void StmtProfiler::VisitCXXDefaultArgExpr(CXXDefaultArgExpr *S) {
697  VisitExpr(S);
698  VisitDecl(S->getParam());
699}
700
701void StmtProfiler::VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *S) {
702  VisitExpr(S);
703  VisitDecl(
704         const_cast<CXXDestructorDecl *>(S->getTemporary()->getDestructor()));
705}
706
707void StmtProfiler::VisitCXXConstructExpr(CXXConstructExpr *S) {
708  VisitExpr(S);
709  VisitDecl(S->getConstructor());
710  ID.AddBoolean(S->isElidable());
711}
712
713void StmtProfiler::VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr *S) {
714  VisitExplicitCastExpr(S);
715}
716
717void StmtProfiler::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *S) {
718  VisitCXXConstructExpr(S);
719}
720
721void StmtProfiler::VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *S) {
722  VisitExpr(S);
723}
724
725void StmtProfiler::VisitCXXDeleteExpr(CXXDeleteExpr *S) {
726  VisitExpr(S);
727  ID.AddBoolean(S->isGlobalDelete());
728  ID.AddBoolean(S->isArrayForm());
729  VisitDecl(S->getOperatorDelete());
730}
731
732
733void StmtProfiler::VisitCXXNewExpr(CXXNewExpr *S) {
734  VisitExpr(S);
735  VisitType(S->getAllocatedType());
736  VisitDecl(S->getOperatorNew());
737  VisitDecl(S->getOperatorDelete());
738  VisitDecl(S->getConstructor());
739  ID.AddBoolean(S->isArray());
740  ID.AddInteger(S->getNumPlacementArgs());
741  ID.AddBoolean(S->isGlobalNew());
742  ID.AddBoolean(S->isParenTypeId());
743  ID.AddBoolean(S->hasInitializer());
744  ID.AddInteger(S->getNumConstructorArgs());
745}
746
747void StmtProfiler::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *S) {
748  VisitExpr(S);
749  ID.AddBoolean(S->isArrow());
750  VisitNestedNameSpecifier(S->getQualifier());
751  VisitType(S->getDestroyedType());
752}
753
754void StmtProfiler::VisitOverloadExpr(OverloadExpr *S) {
755  VisitExpr(S);
756  VisitNestedNameSpecifier(S->getQualifier());
757  VisitName(S->getName());
758  ID.AddBoolean(S->hasExplicitTemplateArgs());
759  if (S->hasExplicitTemplateArgs())
760    VisitTemplateArguments(S->getExplicitTemplateArgs().getTemplateArgs(),
761                           S->getExplicitTemplateArgs().NumTemplateArgs);
762}
763
764void
765StmtProfiler::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *S) {
766  VisitOverloadExpr(S);
767}
768
769void StmtProfiler::VisitUnaryTypeTraitExpr(UnaryTypeTraitExpr *S) {
770  VisitExpr(S);
771  ID.AddInteger(S->getTrait());
772  VisitType(S->getQueriedType());
773}
774
775void StmtProfiler::VisitBinaryTypeTraitExpr(BinaryTypeTraitExpr *S) {
776  VisitExpr(S);
777  ID.AddInteger(S->getTrait());
778  VisitType(S->getLhsType());
779  VisitType(S->getRhsType());
780}
781
782void
783StmtProfiler::VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *S) {
784  VisitExpr(S);
785  VisitName(S->getDeclName());
786  VisitNestedNameSpecifier(S->getQualifier());
787  ID.AddBoolean(S->hasExplicitTemplateArgs());
788  if (S->hasExplicitTemplateArgs())
789    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
790}
791
792void StmtProfiler::VisitExprWithCleanups(ExprWithCleanups *S) {
793  VisitExpr(S);
794}
795
796void
797StmtProfiler::VisitCXXUnresolvedConstructExpr(CXXUnresolvedConstructExpr *S) {
798  VisitExpr(S);
799  VisitType(S->getTypeAsWritten());
800}
801
802void
803StmtProfiler::VisitCXXDependentScopeMemberExpr(CXXDependentScopeMemberExpr *S) {
804  ID.AddBoolean(S->isImplicitAccess());
805  if (!S->isImplicitAccess()) {
806    VisitExpr(S);
807    ID.AddBoolean(S->isArrow());
808  }
809  VisitNestedNameSpecifier(S->getQualifier());
810  VisitName(S->getMember());
811  ID.AddBoolean(S->hasExplicitTemplateArgs());
812  if (S->hasExplicitTemplateArgs())
813    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
814}
815
816void StmtProfiler::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *S) {
817  ID.AddBoolean(S->isImplicitAccess());
818  if (!S->isImplicitAccess()) {
819    VisitExpr(S);
820    ID.AddBoolean(S->isArrow());
821  }
822  VisitNestedNameSpecifier(S->getQualifier());
823  VisitName(S->getMemberName());
824  ID.AddBoolean(S->hasExplicitTemplateArgs());
825  if (S->hasExplicitTemplateArgs())
826    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
827}
828
829void StmtProfiler::VisitCXXNoexceptExpr(CXXNoexceptExpr *S) {
830  VisitExpr(S);
831}
832
833void StmtProfiler::VisitPackExpansionExpr(PackExpansionExpr *S) {
834  VisitExpr(S);
835}
836
837void StmtProfiler::VisitSizeOfPackExpr(SizeOfPackExpr *S) {
838  VisitExpr(S);
839  VisitDecl(S->getPack());
840}
841
842void StmtProfiler::VisitSubstNonTypeTemplateParmPackExpr(
843                                         SubstNonTypeTemplateParmPackExpr *S) {
844  VisitExpr(S);
845  VisitDecl(S->getParameterPack());
846  VisitTemplateArgument(S->getArgumentPack());
847}
848
849void StmtProfiler::VisitOpaqueValueExpr(OpaqueValueExpr *E) {
850  VisitExpr(E);
851}
852
853void StmtProfiler::VisitObjCStringLiteral(ObjCStringLiteral *S) {
854  VisitExpr(S);
855}
856
857void StmtProfiler::VisitObjCEncodeExpr(ObjCEncodeExpr *S) {
858  VisitExpr(S);
859  VisitType(S->getEncodedType());
860}
861
862void StmtProfiler::VisitObjCSelectorExpr(ObjCSelectorExpr *S) {
863  VisitExpr(S);
864  VisitName(S->getSelector());
865}
866
867void StmtProfiler::VisitObjCProtocolExpr(ObjCProtocolExpr *S) {
868  VisitExpr(S);
869  VisitDecl(S->getProtocol());
870}
871
872void StmtProfiler::VisitObjCIvarRefExpr(ObjCIvarRefExpr *S) {
873  VisitExpr(S);
874  VisitDecl(S->getDecl());
875  ID.AddBoolean(S->isArrow());
876  ID.AddBoolean(S->isFreeIvar());
877}
878
879void StmtProfiler::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *S) {
880  VisitExpr(S);
881  if (S->isImplicitProperty()) {
882    VisitDecl(S->getImplicitPropertyGetter());
883    VisitDecl(S->getImplicitPropertySetter());
884  } else {
885    VisitDecl(S->getExplicitProperty());
886  }
887  if (S->isSuperReceiver()) {
888    ID.AddBoolean(S->isSuperReceiver());
889    VisitType(S->getSuperReceiverType());
890  }
891}
892
893void StmtProfiler::VisitObjCMessageExpr(ObjCMessageExpr *S) {
894  VisitExpr(S);
895  VisitName(S->getSelector());
896  VisitDecl(S->getMethodDecl());
897}
898
899void StmtProfiler::VisitObjCIsaExpr(ObjCIsaExpr *S) {
900  VisitExpr(S);
901  ID.AddBoolean(S->isArrow());
902}
903
904void StmtProfiler::VisitDecl(Decl *D) {
905  ID.AddInteger(D? D->getKind() : 0);
906
907  if (Canonical && D) {
908    if (NonTypeTemplateParmDecl *NTTP = dyn_cast<NonTypeTemplateParmDecl>(D)) {
909      ID.AddInteger(NTTP->getDepth());
910      ID.AddInteger(NTTP->getIndex());
911      ID.AddBoolean(NTTP->isParameterPack());
912      VisitType(NTTP->getType());
913      return;
914    }
915
916    if (ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) {
917      // The Itanium C++ ABI uses the type of a parameter when mangling
918      // expressions that involve function parameters, so we will use the
919      // parameter's type for establishing function parameter identity. That
920      // way, our definition of "equivalent" (per C++ [temp.over.link])
921      // matches the definition of "equivalent" used for name mangling.
922      VisitType(Parm->getType());
923      return;
924    }
925
926    if (TemplateTemplateParmDecl *TTP = dyn_cast<TemplateTemplateParmDecl>(D)) {
927      ID.AddInteger(TTP->getDepth());
928      ID.AddInteger(TTP->getIndex());
929      ID.AddBoolean(TTP->isParameterPack());
930      return;
931    }
932  }
933
934  ID.AddPointer(D? D->getCanonicalDecl() : 0);
935}
936
937void StmtProfiler::VisitType(QualType T) {
938  if (Canonical)
939    T = Context.getCanonicalType(T);
940
941  ID.AddPointer(T.getAsOpaquePtr());
942}
943
944void StmtProfiler::VisitName(DeclarationName Name) {
945  ID.AddPointer(Name.getAsOpaquePtr());
946}
947
948void StmtProfiler::VisitNestedNameSpecifier(NestedNameSpecifier *NNS) {
949  if (Canonical)
950    NNS = Context.getCanonicalNestedNameSpecifier(NNS);
951  ID.AddPointer(NNS);
952}
953
954void StmtProfiler::VisitTemplateName(TemplateName Name) {
955  if (Canonical)
956    Name = Context.getCanonicalTemplateName(Name);
957
958  Name.Profile(ID);
959}
960
961void StmtProfiler::VisitTemplateArguments(const TemplateArgumentLoc *Args,
962                                          unsigned NumArgs) {
963  ID.AddInteger(NumArgs);
964  for (unsigned I = 0; I != NumArgs; ++I)
965    VisitTemplateArgument(Args[I].getArgument());
966}
967
968void StmtProfiler::VisitTemplateArgument(const TemplateArgument &Arg) {
969  // Mostly repetitive with TemplateArgument::Profile!
970  ID.AddInteger(Arg.getKind());
971  switch (Arg.getKind()) {
972  case TemplateArgument::Null:
973    break;
974
975  case TemplateArgument::Type:
976    VisitType(Arg.getAsType());
977    break;
978
979  case TemplateArgument::Template:
980  case TemplateArgument::TemplateExpansion:
981    VisitTemplateName(Arg.getAsTemplateOrTemplatePattern());
982    break;
983
984  case TemplateArgument::Declaration:
985    VisitDecl(Arg.getAsDecl());
986    break;
987
988  case TemplateArgument::Integral:
989    Arg.getAsIntegral()->Profile(ID);
990    VisitType(Arg.getIntegralType());
991    break;
992
993  case TemplateArgument::Expression:
994    Visit(Arg.getAsExpr());
995    break;
996
997  case TemplateArgument::Pack:
998    const TemplateArgument *Pack = Arg.pack_begin();
999    for (unsigned i = 0, e = Arg.pack_size(); i != e; ++i)
1000      VisitTemplateArgument(Pack[i]);
1001    break;
1002  }
1003}
1004
1005void Stmt::Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
1006                   bool Canonical) {
1007  StmtProfiler Profiler(ID, Context, Canonical);
1008  Profiler.Visit(this);
1009}
1010