StmtProfile.cpp revision 91a5755ad73c5dc1dfb167e448fdd74e75a6df56 
1//===---- StmtProfile.cpp - Profile implementation for Stmt ASTs ----------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file implements the Stmt::Profile method, which builds a unique bit
11// representation that identifies a statement/expression.
12//
13//===----------------------------------------------------------------------===//
14#include "clang/AST/ASTContext.h"
15#include "clang/AST/DeclCXX.h"
16#include "clang/AST/DeclObjC.h"
17#include "clang/AST/DeclTemplate.h"
18#include "clang/AST/Expr.h"
19#include "clang/AST/ExprCXX.h"
20#include "clang/AST/ExprObjC.h"
21#include "clang/AST/StmtVisitor.h"
22#include "llvm/ADT/FoldingSet.h"
23using namespace clang;
24
25namespace {
26  class StmtProfiler : public ConstStmtVisitor<StmtProfiler> {
27    llvm::FoldingSetNodeID &ID;
28    const ASTContext &Context;
29    bool Canonical;
30
31  public:
32    StmtProfiler(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
33                 bool Canonical)
34      : ID(ID), Context(Context), Canonical(Canonical) { }
35
36    void VisitStmt(const Stmt *S);
37
38#define STMT(Node, Base) void Visit##Node(const Node *S);
39#include "clang/AST/StmtNodes.inc"
40
41    /// \brief Visit a declaration that is referenced within an expression
42    /// or statement.
43    void VisitDecl(const Decl *D);
44
45    /// \brief Visit a type that is referenced within an expression or
46    /// statement.
47    void VisitType(QualType T);
48
49    /// \brief Visit a name that occurs within an expression or statement.
50    void VisitName(DeclarationName Name);
51
52    /// \brief Visit a nested-name-specifier that occurs within an expression
53    /// or statement.
54    void VisitNestedNameSpecifier(NestedNameSpecifier *NNS);
55
56    /// \brief Visit a template name that occurs within an expression or
57    /// statement.
58    void VisitTemplateName(TemplateName Name);
59
60    /// \brief Visit template arguments that occur within an expression or
61    /// statement.
62    void VisitTemplateArguments(const TemplateArgumentLoc *Args,
63                                unsigned NumArgs);
64
65    /// \brief Visit a single template argument.
66    void VisitTemplateArgument(const TemplateArgument &Arg);
67  };
68}
69
70void StmtProfiler::VisitStmt(const Stmt *S) {
71  ID.AddInteger(S->getStmtClass());
72  for (Stmt::const_child_range C = S->children(); C; ++C)
73    Visit(*C);
74}
75
76void StmtProfiler::VisitDeclStmt(const DeclStmt *S) {
77  VisitStmt(S);
78  for (DeclStmt::const_decl_iterator D = S->decl_begin(), DEnd = S->decl_end();
79       D != DEnd; ++D)
80    VisitDecl(*D);
81}
82
83void StmtProfiler::VisitNullStmt(const NullStmt *S) {
84  VisitStmt(S);
85}
86
87void StmtProfiler::VisitCompoundStmt(const CompoundStmt *S) {
88  VisitStmt(S);
89}
90
91void StmtProfiler::VisitSwitchCase(const SwitchCase *S) {
92  VisitStmt(S);
93}
94
95void StmtProfiler::VisitCaseStmt(const CaseStmt *S) {
96  VisitStmt(S);
97}
98
99void StmtProfiler::VisitDefaultStmt(const DefaultStmt *S) {
100  VisitStmt(S);
101}
102
103void StmtProfiler::VisitLabelStmt(const LabelStmt *S) {
104  VisitStmt(S);
105  VisitDecl(S->getDecl());
106}
107
108void StmtProfiler::VisitIfStmt(const IfStmt *S) {
109  VisitStmt(S);
110  VisitDecl(S->getConditionVariable());
111}
112
113void StmtProfiler::VisitSwitchStmt(const SwitchStmt *S) {
114  VisitStmt(S);
115  VisitDecl(S->getConditionVariable());
116}
117
118void StmtProfiler::VisitWhileStmt(const WhileStmt *S) {
119  VisitStmt(S);
120  VisitDecl(S->getConditionVariable());
121}
122
123void StmtProfiler::VisitDoStmt(const DoStmt *S) {
124  VisitStmt(S);
125}
126
127void StmtProfiler::VisitForStmt(const ForStmt *S) {
128  VisitStmt(S);
129}
130
131void StmtProfiler::VisitGotoStmt(const GotoStmt *S) {
132  VisitStmt(S);
133  VisitDecl(S->getLabel());
134}
135
136void StmtProfiler::VisitIndirectGotoStmt(const IndirectGotoStmt *S) {
137  VisitStmt(S);
138}
139
140void StmtProfiler::VisitContinueStmt(const ContinueStmt *S) {
141  VisitStmt(S);
142}
143
144void StmtProfiler::VisitBreakStmt(const BreakStmt *S) {
145  VisitStmt(S);
146}
147
148void StmtProfiler::VisitReturnStmt(const ReturnStmt *S) {
149  VisitStmt(S);
150}
151
152void StmtProfiler::VisitAsmStmt(const 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(const CXXCatchStmt *S) {
173  VisitStmt(S);
174  VisitType(S->getCaughtType());
175}
176
177void StmtProfiler::VisitCXXTryStmt(const CXXTryStmt *S) {
178  VisitStmt(S);
179}
180
181void StmtProfiler::VisitCXXForRangeStmt(const CXXForRangeStmt *S) {
182  VisitStmt(S);
183}
184
185void StmtProfiler::VisitSEHTryStmt(const SEHTryStmt *S) {
186  VisitStmt(S);
187}
188
189void StmtProfiler::VisitSEHFinallyStmt(const SEHFinallyStmt *S) {
190  VisitStmt(S);
191}
192
193void StmtProfiler::VisitSEHExceptStmt(const SEHExceptStmt *S) {
194  VisitStmt(S);
195}
196
197void StmtProfiler::VisitObjCForCollectionStmt(const ObjCForCollectionStmt *S) {
198  VisitStmt(S);
199}
200
201void StmtProfiler::VisitObjCAtCatchStmt(const ObjCAtCatchStmt *S) {
202  VisitStmt(S);
203  ID.AddBoolean(S->hasEllipsis());
204  if (S->getCatchParamDecl())
205    VisitType(S->getCatchParamDecl()->getType());
206}
207
208void StmtProfiler::VisitObjCAtFinallyStmt(const ObjCAtFinallyStmt *S) {
209  VisitStmt(S);
210}
211
212void StmtProfiler::VisitObjCAtTryStmt(const ObjCAtTryStmt *S) {
213  VisitStmt(S);
214}
215
216void
217StmtProfiler::VisitObjCAtSynchronizedStmt(const ObjCAtSynchronizedStmt *S) {
218  VisitStmt(S);
219}
220
221void StmtProfiler::VisitObjCAtThrowStmt(const ObjCAtThrowStmt *S) {
222  VisitStmt(S);
223}
224
225void
226StmtProfiler::VisitObjCAutoreleasePoolStmt(const ObjCAutoreleasePoolStmt *S) {
227  VisitStmt(S);
228}
229
230void StmtProfiler::VisitExpr(const Expr *S) {
231  VisitStmt(S);
232}
233
234void StmtProfiler::VisitDeclRefExpr(const DeclRefExpr *S) {
235  VisitExpr(S);
236  if (!Canonical)
237    VisitNestedNameSpecifier(S->getQualifier());
238  VisitDecl(S->getDecl());
239  if (!Canonical)
240    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
241}
242
243void StmtProfiler::VisitPredefinedExpr(const PredefinedExpr *S) {
244  VisitExpr(S);
245  ID.AddInteger(S->getIdentType());
246}
247
248void StmtProfiler::VisitIntegerLiteral(const IntegerLiteral *S) {
249  VisitExpr(S);
250  S->getValue().Profile(ID);
251}
252
253void StmtProfiler::VisitCharacterLiteral(const CharacterLiteral *S) {
254  VisitExpr(S);
255  ID.AddBoolean(S->isWide());
256  ID.AddInteger(S->getValue());
257}
258
259void StmtProfiler::VisitFloatingLiteral(const FloatingLiteral *S) {
260  VisitExpr(S);
261  S->getValue().Profile(ID);
262  ID.AddBoolean(S->isExact());
263}
264
265void StmtProfiler::VisitImaginaryLiteral(const ImaginaryLiteral *S) {
266  VisitExpr(S);
267}
268
269void StmtProfiler::VisitStringLiteral(const StringLiteral *S) {
270  VisitExpr(S);
271  ID.AddString(S->getString());
272  ID.AddBoolean(S->isWide());
273}
274
275void StmtProfiler::VisitParenExpr(const ParenExpr *S) {
276  VisitExpr(S);
277}
278
279void StmtProfiler::VisitParenListExpr(const ParenListExpr *S) {
280  VisitExpr(S);
281}
282
283void StmtProfiler::VisitUnaryOperator(const UnaryOperator *S) {
284  VisitExpr(S);
285  ID.AddInteger(S->getOpcode());
286}
287
288void StmtProfiler::VisitOffsetOfExpr(const OffsetOfExpr *S) {
289  VisitType(S->getTypeSourceInfo()->getType());
290  unsigned n = S->getNumComponents();
291  for (unsigned i = 0; i < n; ++i) {
292    const OffsetOfExpr::OffsetOfNode& ON = S->getComponent(i);
293    ID.AddInteger(ON.getKind());
294    switch (ON.getKind()) {
295    case OffsetOfExpr::OffsetOfNode::Array:
296      // Expressions handled below.
297      break;
298
299    case OffsetOfExpr::OffsetOfNode::Field:
300      VisitDecl(ON.getField());
301      break;
302
303    case OffsetOfExpr::OffsetOfNode::Identifier:
304      ID.AddPointer(ON.getFieldName());
305      break;
306
307    case OffsetOfExpr::OffsetOfNode::Base:
308      // These nodes are implicit, and therefore don't need profiling.
309      break;
310    }
311  }
312
313  VisitExpr(S);
314}
315
316void
317StmtProfiler::VisitUnaryExprOrTypeTraitExpr(const UnaryExprOrTypeTraitExpr *S) {
318  VisitExpr(S);
319  ID.AddInteger(S->getKind());
320  if (S->isArgumentType())
321    VisitType(S->getArgumentType());
322}
323
324void StmtProfiler::VisitArraySubscriptExpr(const ArraySubscriptExpr *S) {
325  VisitExpr(S);
326}
327
328void StmtProfiler::VisitCallExpr(const CallExpr *S) {
329  VisitExpr(S);
330}
331
332void StmtProfiler::VisitMemberExpr(const MemberExpr *S) {
333  VisitExpr(S);
334  VisitDecl(S->getMemberDecl());
335  if (!Canonical)
336    VisitNestedNameSpecifier(S->getQualifier());
337  ID.AddBoolean(S->isArrow());
338}
339
340void StmtProfiler::VisitCompoundLiteralExpr(const CompoundLiteralExpr *S) {
341  VisitExpr(S);
342  ID.AddBoolean(S->isFileScope());
343}
344
345void StmtProfiler::VisitCastExpr(const CastExpr *S) {
346  VisitExpr(S);
347}
348
349void StmtProfiler::VisitImplicitCastExpr(const ImplicitCastExpr *S) {
350  VisitCastExpr(S);
351  ID.AddInteger(S->getValueKind());
352}
353
354void StmtProfiler::VisitExplicitCastExpr(const ExplicitCastExpr *S) {
355  VisitCastExpr(S);
356  VisitType(S->getTypeAsWritten());
357}
358
359void StmtProfiler::VisitCStyleCastExpr(const CStyleCastExpr *S) {
360  VisitExplicitCastExpr(S);
361}
362
363void StmtProfiler::VisitBinaryOperator(const BinaryOperator *S) {
364  VisitExpr(S);
365  ID.AddInteger(S->getOpcode());
366}
367
368void
369StmtProfiler::VisitCompoundAssignOperator(const CompoundAssignOperator *S) {
370  VisitBinaryOperator(S);
371}
372
373void StmtProfiler::VisitConditionalOperator(const ConditionalOperator *S) {
374  VisitExpr(S);
375}
376
377void StmtProfiler::VisitBinaryConditionalOperator(
378    const BinaryConditionalOperator *S) {
379  VisitExpr(S);
380}
381
382void StmtProfiler::VisitAddrLabelExpr(const AddrLabelExpr *S) {
383  VisitExpr(S);
384  VisitDecl(S->getLabel());
385}
386
387void StmtProfiler::VisitStmtExpr(const StmtExpr *S) {
388  VisitExpr(S);
389}
390
391void StmtProfiler::VisitShuffleVectorExpr(const ShuffleVectorExpr *S) {
392  VisitExpr(S);
393}
394
395void StmtProfiler::VisitChooseExpr(const ChooseExpr *S) {
396  VisitExpr(S);
397}
398
399void StmtProfiler::VisitGNUNullExpr(const GNUNullExpr *S) {
400  VisitExpr(S);
401}
402
403void StmtProfiler::VisitVAArgExpr(const VAArgExpr *S) {
404  VisitExpr(S);
405}
406
407void StmtProfiler::VisitInitListExpr(const InitListExpr *S) {
408  if (S->getSyntacticForm()) {
409    VisitInitListExpr(S->getSyntacticForm());
410    return;
411  }
412
413  VisitExpr(S);
414}
415
416void StmtProfiler::VisitDesignatedInitExpr(const DesignatedInitExpr *S) {
417  VisitExpr(S);
418  ID.AddBoolean(S->usesGNUSyntax());
419  for (DesignatedInitExpr::const_designators_iterator D =
420         S->designators_begin(), DEnd = S->designators_end();
421       D != DEnd; ++D) {
422    if (D->isFieldDesignator()) {
423      ID.AddInteger(0);
424      VisitName(D->getFieldName());
425      continue;
426    }
427
428    if (D->isArrayDesignator()) {
429      ID.AddInteger(1);
430    } else {
431      assert(D->isArrayRangeDesignator());
432      ID.AddInteger(2);
433    }
434    ID.AddInteger(D->getFirstExprIndex());
435  }
436}
437
438void StmtProfiler::VisitImplicitValueInitExpr(const ImplicitValueInitExpr *S) {
439  VisitExpr(S);
440}
441
442void StmtProfiler::VisitExtVectorElementExpr(const ExtVectorElementExpr *S) {
443  VisitExpr(S);
444  VisitName(&S->getAccessor());
445}
446
447void StmtProfiler::VisitBlockExpr(const BlockExpr *S) {
448  VisitExpr(S);
449  VisitDecl(S->getBlockDecl());
450}
451
452void StmtProfiler::VisitBlockDeclRefExpr(const BlockDeclRefExpr *S) {
453  VisitExpr(S);
454  VisitDecl(S->getDecl());
455  ID.AddBoolean(S->isByRef());
456  ID.AddBoolean(S->isConstQualAdded());
457}
458
459void StmtProfiler::VisitGenericSelectionExpr(const GenericSelectionExpr *S) {
460  VisitExpr(S);
461  for (unsigned i = 0; i != S->getNumAssocs(); ++i) {
462    QualType T = S->getAssocType(i);
463    if (T.isNull())
464      ID.AddPointer(0);
465    else
466      VisitType(T);
467    VisitExpr(S->getAssocExpr(i));
468  }
469}
470
471static Stmt::StmtClass DecodeOperatorCall(const CXXOperatorCallExpr *S,
472                                          UnaryOperatorKind &UnaryOp,
473                                          BinaryOperatorKind &BinaryOp) {
474  switch (S->getOperator()) {
475  case OO_None:
476  case OO_New:
477  case OO_Delete:
478  case OO_Array_New:
479  case OO_Array_Delete:
480  case OO_Arrow:
481  case OO_Call:
482  case OO_Conditional:
483  case NUM_OVERLOADED_OPERATORS:
484    llvm_unreachable("Invalid operator call kind");
485    return Stmt::ArraySubscriptExprClass;
486
487  case OO_Plus:
488    if (S->getNumArgs() == 1) {
489      UnaryOp = UO_Plus;
490      return Stmt::UnaryOperatorClass;
491    }
492
493    BinaryOp = BO_Add;
494    return Stmt::BinaryOperatorClass;
495
496  case OO_Minus:
497    if (S->getNumArgs() == 1) {
498      UnaryOp = UO_Minus;
499      return Stmt::UnaryOperatorClass;
500    }
501
502    BinaryOp = BO_Sub;
503    return Stmt::BinaryOperatorClass;
504
505  case OO_Star:
506    if (S->getNumArgs() == 1) {
507      UnaryOp = UO_Minus;
508      return Stmt::UnaryOperatorClass;
509    }
510
511    BinaryOp = BO_Sub;
512    return Stmt::BinaryOperatorClass;
513
514  case OO_Slash:
515    BinaryOp = BO_Div;
516    return Stmt::BinaryOperatorClass;
517
518  case OO_Percent:
519    BinaryOp = BO_Rem;
520    return Stmt::BinaryOperatorClass;
521
522  case OO_Caret:
523    BinaryOp = BO_Xor;
524    return Stmt::BinaryOperatorClass;
525
526  case OO_Amp:
527    if (S->getNumArgs() == 1) {
528      UnaryOp = UO_AddrOf;
529      return Stmt::UnaryOperatorClass;
530    }
531
532    BinaryOp = BO_And;
533    return Stmt::BinaryOperatorClass;
534
535  case OO_Pipe:
536    BinaryOp = BO_Or;
537    return Stmt::BinaryOperatorClass;
538
539  case OO_Tilde:
540    UnaryOp = UO_Not;
541    return Stmt::UnaryOperatorClass;
542
543  case OO_Exclaim:
544    UnaryOp = UO_LNot;
545    return Stmt::UnaryOperatorClass;
546
547  case OO_Equal:
548    BinaryOp = BO_Assign;
549    return Stmt::BinaryOperatorClass;
550
551  case OO_Less:
552    BinaryOp = BO_LT;
553    return Stmt::BinaryOperatorClass;
554
555  case OO_Greater:
556    BinaryOp = BO_GT;
557    return Stmt::BinaryOperatorClass;
558
559  case OO_PlusEqual:
560    BinaryOp = BO_AddAssign;
561    return Stmt::CompoundAssignOperatorClass;
562
563  case OO_MinusEqual:
564    BinaryOp = BO_SubAssign;
565    return Stmt::CompoundAssignOperatorClass;
566
567  case OO_StarEqual:
568    BinaryOp = BO_MulAssign;
569    return Stmt::CompoundAssignOperatorClass;
570
571  case OO_SlashEqual:
572    BinaryOp = BO_DivAssign;
573    return Stmt::CompoundAssignOperatorClass;
574
575  case OO_PercentEqual:
576    BinaryOp = BO_RemAssign;
577    return Stmt::CompoundAssignOperatorClass;
578
579  case OO_CaretEqual:
580    BinaryOp = BO_XorAssign;
581    return Stmt::CompoundAssignOperatorClass;
582
583  case OO_AmpEqual:
584    BinaryOp = BO_AndAssign;
585    return Stmt::CompoundAssignOperatorClass;
586
587  case OO_PipeEqual:
588    BinaryOp = BO_OrAssign;
589    return Stmt::CompoundAssignOperatorClass;
590
591  case OO_LessLess:
592    BinaryOp = BO_Shl;
593    return Stmt::BinaryOperatorClass;
594
595  case OO_GreaterGreater:
596    BinaryOp = BO_Shr;
597    return Stmt::BinaryOperatorClass;
598
599  case OO_LessLessEqual:
600    BinaryOp = BO_ShlAssign;
601    return Stmt::CompoundAssignOperatorClass;
602
603  case OO_GreaterGreaterEqual:
604    BinaryOp = BO_ShrAssign;
605    return Stmt::CompoundAssignOperatorClass;
606
607  case OO_EqualEqual:
608    BinaryOp = BO_EQ;
609    return Stmt::BinaryOperatorClass;
610
611  case OO_ExclaimEqual:
612    BinaryOp = BO_NE;
613    return Stmt::BinaryOperatorClass;
614
615  case OO_LessEqual:
616    BinaryOp = BO_LE;
617    return Stmt::BinaryOperatorClass;
618
619  case OO_GreaterEqual:
620    BinaryOp = BO_GE;
621    return Stmt::BinaryOperatorClass;
622
623  case OO_AmpAmp:
624    BinaryOp = BO_LAnd;
625    return Stmt::BinaryOperatorClass;
626
627  case OO_PipePipe:
628    BinaryOp = BO_LOr;
629    return Stmt::BinaryOperatorClass;
630
631  case OO_PlusPlus:
632    UnaryOp = S->getNumArgs() == 1? UO_PreInc
633                                  : UO_PostInc;
634    return Stmt::UnaryOperatorClass;
635
636  case OO_MinusMinus:
637    UnaryOp = S->getNumArgs() == 1? UO_PreDec
638                                  : UO_PostDec;
639    return Stmt::UnaryOperatorClass;
640
641  case OO_Comma:
642    BinaryOp = BO_Comma;
643    return Stmt::BinaryOperatorClass;
644
645
646  case OO_ArrowStar:
647    BinaryOp = BO_PtrMemI;
648    return Stmt::BinaryOperatorClass;
649
650  case OO_Subscript:
651    return Stmt::ArraySubscriptExprClass;
652  }
653
654  llvm_unreachable("Invalid overloaded operator expression");
655}
656
657
658void StmtProfiler::VisitCXXOperatorCallExpr(const CXXOperatorCallExpr *S) {
659  if (S->isTypeDependent()) {
660    // Type-dependent operator calls are profiled like their underlying
661    // syntactic operator.
662    UnaryOperatorKind UnaryOp = UO_Extension;
663    BinaryOperatorKind BinaryOp = BO_Comma;
664    Stmt::StmtClass SC = DecodeOperatorCall(S, UnaryOp, BinaryOp);
665
666    ID.AddInteger(SC);
667    for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
668      Visit(S->getArg(I));
669    if (SC == Stmt::UnaryOperatorClass)
670      ID.AddInteger(UnaryOp);
671    else if (SC == Stmt::BinaryOperatorClass ||
672             SC == Stmt::CompoundAssignOperatorClass)
673      ID.AddInteger(BinaryOp);
674    else
675      assert(SC == Stmt::ArraySubscriptExprClass);
676
677    return;
678  }
679
680  VisitCallExpr(S);
681  ID.AddInteger(S->getOperator());
682}
683
684void StmtProfiler::VisitCXXMemberCallExpr(const CXXMemberCallExpr *S) {
685  VisitCallExpr(S);
686}
687
688void StmtProfiler::VisitCUDAKernelCallExpr(const CUDAKernelCallExpr *S) {
689  VisitCallExpr(S);
690}
691
692void StmtProfiler::VisitAsTypeExpr(const AsTypeExpr *S) {
693  VisitExpr(S);
694}
695
696void StmtProfiler::VisitCXXNamedCastExpr(const CXXNamedCastExpr *S) {
697  VisitExplicitCastExpr(S);
698}
699
700void StmtProfiler::VisitCXXStaticCastExpr(const CXXStaticCastExpr *S) {
701  VisitCXXNamedCastExpr(S);
702}
703
704void StmtProfiler::VisitCXXDynamicCastExpr(const CXXDynamicCastExpr *S) {
705  VisitCXXNamedCastExpr(S);
706}
707
708void
709StmtProfiler::VisitCXXReinterpretCastExpr(const CXXReinterpretCastExpr *S) {
710  VisitCXXNamedCastExpr(S);
711}
712
713void StmtProfiler::VisitCXXConstCastExpr(const CXXConstCastExpr *S) {
714  VisitCXXNamedCastExpr(S);
715}
716
717void StmtProfiler::VisitCXXBoolLiteralExpr(const CXXBoolLiteralExpr *S) {
718  VisitExpr(S);
719  ID.AddBoolean(S->getValue());
720}
721
722void StmtProfiler::VisitCXXNullPtrLiteralExpr(const CXXNullPtrLiteralExpr *S) {
723  VisitExpr(S);
724}
725
726void StmtProfiler::VisitCXXTypeidExpr(const CXXTypeidExpr *S) {
727  VisitExpr(S);
728  if (S->isTypeOperand())
729    VisitType(S->getTypeOperand());
730}
731
732void StmtProfiler::VisitCXXUuidofExpr(const CXXUuidofExpr *S) {
733  VisitExpr(S);
734  if (S->isTypeOperand())
735    VisitType(S->getTypeOperand());
736}
737
738void StmtProfiler::VisitCXXThisExpr(const CXXThisExpr *S) {
739  VisitExpr(S);
740}
741
742void StmtProfiler::VisitCXXThrowExpr(const CXXThrowExpr *S) {
743  VisitExpr(S);
744}
745
746void StmtProfiler::VisitCXXDefaultArgExpr(const CXXDefaultArgExpr *S) {
747  VisitExpr(S);
748  VisitDecl(S->getParam());
749}
750
751void StmtProfiler::VisitCXXBindTemporaryExpr(const CXXBindTemporaryExpr *S) {
752  VisitExpr(S);
753  VisitDecl(
754         const_cast<CXXDestructorDecl *>(S->getTemporary()->getDestructor()));
755}
756
757void StmtProfiler::VisitCXXConstructExpr(const CXXConstructExpr *S) {
758  VisitExpr(S);
759  VisitDecl(S->getConstructor());
760  ID.AddBoolean(S->isElidable());
761}
762
763void StmtProfiler::VisitCXXFunctionalCastExpr(const CXXFunctionalCastExpr *S) {
764  VisitExplicitCastExpr(S);
765}
766
767void
768StmtProfiler::VisitCXXTemporaryObjectExpr(const CXXTemporaryObjectExpr *S) {
769  VisitCXXConstructExpr(S);
770}
771
772void
773StmtProfiler::VisitCXXScalarValueInitExpr(const CXXScalarValueInitExpr *S) {
774  VisitExpr(S);
775}
776
777void StmtProfiler::VisitCXXDeleteExpr(const CXXDeleteExpr *S) {
778  VisitExpr(S);
779  ID.AddBoolean(S->isGlobalDelete());
780  ID.AddBoolean(S->isArrayForm());
781  VisitDecl(S->getOperatorDelete());
782}
783
784
785void StmtProfiler::VisitCXXNewExpr(const CXXNewExpr *S) {
786  VisitExpr(S);
787  VisitType(S->getAllocatedType());
788  VisitDecl(S->getOperatorNew());
789  VisitDecl(S->getOperatorDelete());
790  VisitDecl(S->getConstructor());
791  ID.AddBoolean(S->isArray());
792  ID.AddInteger(S->getNumPlacementArgs());
793  ID.AddBoolean(S->isGlobalNew());
794  ID.AddBoolean(S->isParenTypeId());
795  ID.AddBoolean(S->hasInitializer());
796  ID.AddInteger(S->getNumConstructorArgs());
797}
798
799void
800StmtProfiler::VisitCXXPseudoDestructorExpr(const CXXPseudoDestructorExpr *S) {
801  VisitExpr(S);
802  ID.AddBoolean(S->isArrow());
803  VisitNestedNameSpecifier(S->getQualifier());
804  VisitType(S->getDestroyedType());
805}
806
807void StmtProfiler::VisitOverloadExpr(const OverloadExpr *S) {
808  VisitExpr(S);
809  VisitNestedNameSpecifier(S->getQualifier());
810  VisitName(S->getName());
811  ID.AddBoolean(S->hasExplicitTemplateArgs());
812  if (S->hasExplicitTemplateArgs())
813    VisitTemplateArguments(S->getExplicitTemplateArgs().getTemplateArgs(),
814                           S->getExplicitTemplateArgs().NumTemplateArgs);
815}
816
817void
818StmtProfiler::VisitUnresolvedLookupExpr(const UnresolvedLookupExpr *S) {
819  VisitOverloadExpr(S);
820}
821
822void StmtProfiler::VisitUnaryTypeTraitExpr(const UnaryTypeTraitExpr *S) {
823  VisitExpr(S);
824  ID.AddInteger(S->getTrait());
825  VisitType(S->getQueriedType());
826}
827
828void StmtProfiler::VisitBinaryTypeTraitExpr(const BinaryTypeTraitExpr *S) {
829  VisitExpr(S);
830  ID.AddInteger(S->getTrait());
831  VisitType(S->getLhsType());
832  VisitType(S->getRhsType());
833}
834
835void StmtProfiler::VisitArrayTypeTraitExpr(const ArrayTypeTraitExpr *S) {
836  VisitExpr(S);
837  ID.AddInteger(S->getTrait());
838  VisitType(S->getQueriedType());
839}
840
841void StmtProfiler::VisitExpressionTraitExpr(const ExpressionTraitExpr *S) {
842  VisitExpr(S);
843  ID.AddInteger(S->getTrait());
844  VisitExpr(S->getQueriedExpression());
845}
846
847void StmtProfiler::VisitDependentScopeDeclRefExpr(
848    const DependentScopeDeclRefExpr *S) {
849  VisitExpr(S);
850  VisitName(S->getDeclName());
851  VisitNestedNameSpecifier(S->getQualifier());
852  ID.AddBoolean(S->hasExplicitTemplateArgs());
853  if (S->hasExplicitTemplateArgs())
854    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
855}
856
857void StmtProfiler::VisitExprWithCleanups(const ExprWithCleanups *S) {
858  VisitExpr(S);
859}
860
861void StmtProfiler::VisitCXXUnresolvedConstructExpr(
862    const CXXUnresolvedConstructExpr *S) {
863  VisitExpr(S);
864  VisitType(S->getTypeAsWritten());
865}
866
867void StmtProfiler::VisitCXXDependentScopeMemberExpr(
868    const CXXDependentScopeMemberExpr *S) {
869  ID.AddBoolean(S->isImplicitAccess());
870  if (!S->isImplicitAccess()) {
871    VisitExpr(S);
872    ID.AddBoolean(S->isArrow());
873  }
874  VisitNestedNameSpecifier(S->getQualifier());
875  VisitName(S->getMember());
876  ID.AddBoolean(S->hasExplicitTemplateArgs());
877  if (S->hasExplicitTemplateArgs())
878    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
879}
880
881void StmtProfiler::VisitUnresolvedMemberExpr(const UnresolvedMemberExpr *S) {
882  ID.AddBoolean(S->isImplicitAccess());
883  if (!S->isImplicitAccess()) {
884    VisitExpr(S);
885    ID.AddBoolean(S->isArrow());
886  }
887  VisitNestedNameSpecifier(S->getQualifier());
888  VisitName(S->getMemberName());
889  ID.AddBoolean(S->hasExplicitTemplateArgs());
890  if (S->hasExplicitTemplateArgs())
891    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
892}
893
894void StmtProfiler::VisitCXXNoexceptExpr(const CXXNoexceptExpr *S) {
895  VisitExpr(S);
896}
897
898void StmtProfiler::VisitPackExpansionExpr(const PackExpansionExpr *S) {
899  VisitExpr(S);
900}
901
902void StmtProfiler::VisitSizeOfPackExpr(const SizeOfPackExpr *S) {
903  VisitExpr(S);
904  VisitDecl(S->getPack());
905}
906
907void StmtProfiler::VisitSubstNonTypeTemplateParmPackExpr(
908    const SubstNonTypeTemplateParmPackExpr *S) {
909  VisitExpr(S);
910  VisitDecl(S->getParameterPack());
911  VisitTemplateArgument(S->getArgumentPack());
912}
913
914void StmtProfiler::VisitSubstNonTypeTemplateParmExpr(
915    const SubstNonTypeTemplateParmExpr *E) {
916  // Profile exactly as the replacement expression.
917  Visit(E->getReplacement());
918}
919
920void StmtProfiler::VisitMaterializeTemporaryExpr(
921                                           const MaterializeTemporaryExpr *S) {
922  VisitExpr(S);
923}
924
925void StmtProfiler::VisitOpaqueValueExpr(const OpaqueValueExpr *E) {
926  VisitExpr(E);
927}
928
929void StmtProfiler::VisitObjCStringLiteral(const ObjCStringLiteral *S) {
930  VisitExpr(S);
931}
932
933void StmtProfiler::VisitObjCEncodeExpr(const ObjCEncodeExpr *S) {
934  VisitExpr(S);
935  VisitType(S->getEncodedType());
936}
937
938void StmtProfiler::VisitObjCSelectorExpr(const ObjCSelectorExpr *S) {
939  VisitExpr(S);
940  VisitName(S->getSelector());
941}
942
943void StmtProfiler::VisitObjCProtocolExpr(const ObjCProtocolExpr *S) {
944  VisitExpr(S);
945  VisitDecl(S->getProtocol());
946}
947
948void StmtProfiler::VisitObjCIvarRefExpr(const ObjCIvarRefExpr *S) {
949  VisitExpr(S);
950  VisitDecl(S->getDecl());
951  ID.AddBoolean(S->isArrow());
952  ID.AddBoolean(S->isFreeIvar());
953}
954
955void StmtProfiler::VisitObjCPropertyRefExpr(const ObjCPropertyRefExpr *S) {
956  VisitExpr(S);
957  if (S->isImplicitProperty()) {
958    VisitDecl(S->getImplicitPropertyGetter());
959    VisitDecl(S->getImplicitPropertySetter());
960  } else {
961    VisitDecl(S->getExplicitProperty());
962  }
963  if (S->isSuperReceiver()) {
964    ID.AddBoolean(S->isSuperReceiver());
965    VisitType(S->getSuperReceiverType());
966  }
967}
968
969void StmtProfiler::VisitObjCMessageExpr(const ObjCMessageExpr *S) {
970  VisitExpr(S);
971  VisitName(S->getSelector());
972  VisitDecl(S->getMethodDecl());
973}
974
975void StmtProfiler::VisitObjCIsaExpr(const ObjCIsaExpr *S) {
976  VisitExpr(S);
977  ID.AddBoolean(S->isArrow());
978}
979
980void StmtProfiler::VisitObjCIndirectCopyRestoreExpr(
981    const ObjCIndirectCopyRestoreExpr *S) {
982  VisitExpr(S);
983  ID.AddBoolean(S->shouldCopy());
984}
985
986void StmtProfiler::VisitObjCBridgedCastExpr(const ObjCBridgedCastExpr *S) {
987  VisitExplicitCastExpr(S);
988  ID.AddBoolean(S->getBridgeKind());
989}
990
991void StmtProfiler::VisitDecl(const Decl *D) {
992  ID.AddInteger(D? D->getKind() : 0);
993
994  if (Canonical && D) {
995    if (const NonTypeTemplateParmDecl *NTTP =
996          dyn_cast<NonTypeTemplateParmDecl>(D)) {
997      ID.AddInteger(NTTP->getDepth());
998      ID.AddInteger(NTTP->getIndex());
999      ID.AddBoolean(NTTP->isParameterPack());
1000      VisitType(NTTP->getType());
1001      return;
1002    }
1003
1004    if (const ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) {
1005      // The Itanium C++ ABI uses the type, scope depth, and scope
1006      // index of a parameter when mangling expressions that involve
1007      // function parameters, so we will use the parameter's type for
1008      // establishing function parameter identity. That way, our
1009      // definition of "equivalent" (per C++ [temp.over.link]) is at
1010      // least as strong as the definition of "equivalent" used for
1011      // name mangling.
1012      VisitType(Parm->getType());
1013      ID.AddInteger(Parm->getFunctionScopeDepth());
1014      ID.AddInteger(Parm->getFunctionScopeIndex());
1015      return;
1016    }
1017
1018    if (const TemplateTemplateParmDecl *TTP =
1019          dyn_cast<TemplateTemplateParmDecl>(D)) {
1020      ID.AddInteger(TTP->getDepth());
1021      ID.AddInteger(TTP->getIndex());
1022      ID.AddBoolean(TTP->isParameterPack());
1023      return;
1024    }
1025  }
1026
1027  ID.AddPointer(D? D->getCanonicalDecl() : 0);
1028}
1029
1030void StmtProfiler::VisitType(QualType T) {
1031  if (Canonical)
1032    T = Context.getCanonicalType(T);
1033
1034  ID.AddPointer(T.getAsOpaquePtr());
1035}
1036
1037void StmtProfiler::VisitName(DeclarationName Name) {
1038  ID.AddPointer(Name.getAsOpaquePtr());
1039}
1040
1041void StmtProfiler::VisitNestedNameSpecifier(NestedNameSpecifier *NNS) {
1042  if (Canonical)
1043    NNS = Context.getCanonicalNestedNameSpecifier(NNS);
1044  ID.AddPointer(NNS);
1045}
1046
1047void StmtProfiler::VisitTemplateName(TemplateName Name) {
1048  if (Canonical)
1049    Name = Context.getCanonicalTemplateName(Name);
1050
1051  Name.Profile(ID);
1052}
1053
1054void StmtProfiler::VisitTemplateArguments(const TemplateArgumentLoc *Args,
1055                                          unsigned NumArgs) {
1056  ID.AddInteger(NumArgs);
1057  for (unsigned I = 0; I != NumArgs; ++I)
1058    VisitTemplateArgument(Args[I].getArgument());
1059}
1060
1061void StmtProfiler::VisitTemplateArgument(const TemplateArgument &Arg) {
1062  // Mostly repetitive with TemplateArgument::Profile!
1063  ID.AddInteger(Arg.getKind());
1064  switch (Arg.getKind()) {
1065  case TemplateArgument::Null:
1066    break;
1067
1068  case TemplateArgument::Type:
1069    VisitType(Arg.getAsType());
1070    break;
1071
1072  case TemplateArgument::Template:
1073  case TemplateArgument::TemplateExpansion:
1074    VisitTemplateName(Arg.getAsTemplateOrTemplatePattern());
1075    break;
1076
1077  case TemplateArgument::Declaration:
1078    VisitDecl(Arg.getAsDecl());
1079    break;
1080
1081  case TemplateArgument::Integral:
1082    Arg.getAsIntegral()->Profile(ID);
1083    VisitType(Arg.getIntegralType());
1084    break;
1085
1086  case TemplateArgument::Expression:
1087    Visit(Arg.getAsExpr());
1088    break;
1089
1090  case TemplateArgument::Pack:
1091    const TemplateArgument *Pack = Arg.pack_begin();
1092    for (unsigned i = 0, e = Arg.pack_size(); i != e; ++i)
1093      VisitTemplateArgument(Pack[i]);
1094    break;
1095  }
1096}
1097
1098void Stmt::Profile(llvm::FoldingSetNodeID &ID, const ASTContext &Context,
1099                   bool Canonical) const {
1100  StmtProfiler Profiler(ID, Context, Canonical);
1101  Profiler.Visit(this);
1102}
1103