StmtProfile.cpp revision 61c4d28e36cd3f1be392cb77f07436d1fa6b0f9f 
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    ASTContext &Context;
29    bool Canonical;
30
31  public:
32    StmtProfiler(llvm::FoldingSetNodeID &ID, 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  if (S->getCopyConstructorExpr())
429    Visit(S->getCopyConstructorExpr());
430}
431
432static Stmt::StmtClass DecodeOperatorCall(CXXOperatorCallExpr *S,
433                                          UnaryOperatorKind &UnaryOp,
434                                          BinaryOperatorKind &BinaryOp) {
435  switch (S->getOperator()) {
436  case OO_None:
437  case OO_New:
438  case OO_Delete:
439  case OO_Array_New:
440  case OO_Array_Delete:
441  case OO_Arrow:
442  case OO_Call:
443  case OO_Conditional:
444  case NUM_OVERLOADED_OPERATORS:
445    llvm_unreachable("Invalid operator call kind");
446    return Stmt::ArraySubscriptExprClass;
447
448  case OO_Plus:
449    if (S->getNumArgs() == 1) {
450      UnaryOp = UO_Plus;
451      return Stmt::UnaryOperatorClass;
452    }
453
454    BinaryOp = BO_Add;
455    return Stmt::BinaryOperatorClass;
456
457  case OO_Minus:
458    if (S->getNumArgs() == 1) {
459      UnaryOp = UO_Minus;
460      return Stmt::UnaryOperatorClass;
461    }
462
463    BinaryOp = BO_Sub;
464    return Stmt::BinaryOperatorClass;
465
466  case OO_Star:
467    if (S->getNumArgs() == 1) {
468      UnaryOp = UO_Minus;
469      return Stmt::UnaryOperatorClass;
470    }
471
472    BinaryOp = BO_Sub;
473    return Stmt::BinaryOperatorClass;
474
475  case OO_Slash:
476    BinaryOp = BO_Div;
477    return Stmt::BinaryOperatorClass;
478
479  case OO_Percent:
480    BinaryOp = BO_Rem;
481    return Stmt::BinaryOperatorClass;
482
483  case OO_Caret:
484    BinaryOp = BO_Xor;
485    return Stmt::BinaryOperatorClass;
486
487  case OO_Amp:
488    if (S->getNumArgs() == 1) {
489      UnaryOp = UO_AddrOf;
490      return Stmt::UnaryOperatorClass;
491    }
492
493    BinaryOp = BO_And;
494    return Stmt::BinaryOperatorClass;
495
496  case OO_Pipe:
497    BinaryOp = BO_Or;
498    return Stmt::BinaryOperatorClass;
499
500  case OO_Tilde:
501    UnaryOp = UO_Not;
502    return Stmt::UnaryOperatorClass;
503
504  case OO_Exclaim:
505    UnaryOp = UO_LNot;
506    return Stmt::UnaryOperatorClass;
507
508  case OO_Equal:
509    BinaryOp = BO_Assign;
510    return Stmt::BinaryOperatorClass;
511
512  case OO_Less:
513    BinaryOp = BO_LT;
514    return Stmt::BinaryOperatorClass;
515
516  case OO_Greater:
517    BinaryOp = BO_GT;
518    return Stmt::BinaryOperatorClass;
519
520  case OO_PlusEqual:
521    BinaryOp = BO_AddAssign;
522    return Stmt::CompoundAssignOperatorClass;
523
524  case OO_MinusEqual:
525    BinaryOp = BO_SubAssign;
526    return Stmt::CompoundAssignOperatorClass;
527
528  case OO_StarEqual:
529    BinaryOp = BO_MulAssign;
530    return Stmt::CompoundAssignOperatorClass;
531
532  case OO_SlashEqual:
533    BinaryOp = BO_DivAssign;
534    return Stmt::CompoundAssignOperatorClass;
535
536  case OO_PercentEqual:
537    BinaryOp = BO_RemAssign;
538    return Stmt::CompoundAssignOperatorClass;
539
540  case OO_CaretEqual:
541    BinaryOp = BO_XorAssign;
542    return Stmt::CompoundAssignOperatorClass;
543
544  case OO_AmpEqual:
545    BinaryOp = BO_AndAssign;
546    return Stmt::CompoundAssignOperatorClass;
547
548  case OO_PipeEqual:
549    BinaryOp = BO_OrAssign;
550    return Stmt::CompoundAssignOperatorClass;
551
552  case OO_LessLess:
553    BinaryOp = BO_Shl;
554    return Stmt::BinaryOperatorClass;
555
556  case OO_GreaterGreater:
557    BinaryOp = BO_Shr;
558    return Stmt::BinaryOperatorClass;
559
560  case OO_LessLessEqual:
561    BinaryOp = BO_ShlAssign;
562    return Stmt::CompoundAssignOperatorClass;
563
564  case OO_GreaterGreaterEqual:
565    BinaryOp = BO_ShrAssign;
566    return Stmt::CompoundAssignOperatorClass;
567
568  case OO_EqualEqual:
569    BinaryOp = BO_EQ;
570    return Stmt::BinaryOperatorClass;
571
572  case OO_ExclaimEqual:
573    BinaryOp = BO_NE;
574    return Stmt::BinaryOperatorClass;
575
576  case OO_LessEqual:
577    BinaryOp = BO_LE;
578    return Stmt::BinaryOperatorClass;
579
580  case OO_GreaterEqual:
581    BinaryOp = BO_GE;
582    return Stmt::BinaryOperatorClass;
583
584  case OO_AmpAmp:
585    BinaryOp = BO_LAnd;
586    return Stmt::BinaryOperatorClass;
587
588  case OO_PipePipe:
589    BinaryOp = BO_LOr;
590    return Stmt::BinaryOperatorClass;
591
592  case OO_PlusPlus:
593    UnaryOp = S->getNumArgs() == 1? UO_PreInc
594                                  : UO_PostInc;
595    return Stmt::UnaryOperatorClass;
596
597  case OO_MinusMinus:
598    UnaryOp = S->getNumArgs() == 1? UO_PreDec
599                                  : UO_PostDec;
600    return Stmt::UnaryOperatorClass;
601
602  case OO_Comma:
603    BinaryOp = BO_Comma;
604    return Stmt::BinaryOperatorClass;
605
606
607  case OO_ArrowStar:
608    BinaryOp = BO_PtrMemI;
609    return Stmt::BinaryOperatorClass;
610
611  case OO_Subscript:
612    return Stmt::ArraySubscriptExprClass;
613  }
614
615  llvm_unreachable("Invalid overloaded operator expression");
616}
617
618
619void StmtProfiler::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *S) {
620  if (S->isTypeDependent()) {
621    // Type-dependent operator calls are profiled like their underlying
622    // syntactic operator.
623    UnaryOperatorKind UnaryOp = UO_Extension;
624    BinaryOperatorKind BinaryOp = BO_Comma;
625    Stmt::StmtClass SC = DecodeOperatorCall(S, UnaryOp, BinaryOp);
626
627    ID.AddInteger(SC);
628    for (unsigned I = 0, N = S->getNumArgs(); I != N; ++I)
629      Visit(S->getArg(I));
630    if (SC == Stmt::UnaryOperatorClass)
631      ID.AddInteger(UnaryOp);
632    else if (SC == Stmt::BinaryOperatorClass ||
633             SC == Stmt::CompoundAssignOperatorClass)
634      ID.AddInteger(BinaryOp);
635    else
636      assert(SC == Stmt::ArraySubscriptExprClass);
637
638    return;
639  }
640
641  VisitCallExpr(S);
642  ID.AddInteger(S->getOperator());
643}
644
645void StmtProfiler::VisitCXXMemberCallExpr(CXXMemberCallExpr *S) {
646  VisitCallExpr(S);
647}
648
649void StmtProfiler::VisitCXXNamedCastExpr(CXXNamedCastExpr *S) {
650  VisitExplicitCastExpr(S);
651}
652
653void StmtProfiler::VisitCXXStaticCastExpr(CXXStaticCastExpr *S) {
654  VisitCXXNamedCastExpr(S);
655}
656
657void StmtProfiler::VisitCXXDynamicCastExpr(CXXDynamicCastExpr *S) {
658  VisitCXXNamedCastExpr(S);
659}
660
661void StmtProfiler::VisitCXXReinterpretCastExpr(CXXReinterpretCastExpr *S) {
662  VisitCXXNamedCastExpr(S);
663}
664
665void StmtProfiler::VisitCXXConstCastExpr(CXXConstCastExpr *S) {
666  VisitCXXNamedCastExpr(S);
667}
668
669void StmtProfiler::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *S) {
670  VisitExpr(S);
671  ID.AddBoolean(S->getValue());
672}
673
674void StmtProfiler::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *S) {
675  VisitExpr(S);
676}
677
678void StmtProfiler::VisitCXXTypeidExpr(CXXTypeidExpr *S) {
679  VisitExpr(S);
680  if (S->isTypeOperand())
681    VisitType(S->getTypeOperand());
682}
683
684void StmtProfiler::VisitCXXUuidofExpr(CXXUuidofExpr *S) {
685  VisitExpr(S);
686  if (S->isTypeOperand())
687    VisitType(S->getTypeOperand());
688}
689
690void StmtProfiler::VisitCXXThisExpr(CXXThisExpr *S) {
691  VisitExpr(S);
692}
693
694void StmtProfiler::VisitCXXThrowExpr(CXXThrowExpr *S) {
695  VisitExpr(S);
696}
697
698void StmtProfiler::VisitCXXDefaultArgExpr(CXXDefaultArgExpr *S) {
699  VisitExpr(S);
700  VisitDecl(S->getParam());
701}
702
703void StmtProfiler::VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *S) {
704  VisitExpr(S);
705  VisitDecl(
706         const_cast<CXXDestructorDecl *>(S->getTemporary()->getDestructor()));
707}
708
709void StmtProfiler::VisitCXXConstructExpr(CXXConstructExpr *S) {
710  VisitExpr(S);
711  VisitDecl(S->getConstructor());
712  ID.AddBoolean(S->isElidable());
713}
714
715void StmtProfiler::VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr *S) {
716  VisitExplicitCastExpr(S);
717}
718
719void StmtProfiler::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *S) {
720  VisitCXXConstructExpr(S);
721}
722
723void StmtProfiler::VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *S) {
724  VisitExpr(S);
725}
726
727void StmtProfiler::VisitCXXDeleteExpr(CXXDeleteExpr *S) {
728  VisitExpr(S);
729  ID.AddBoolean(S->isGlobalDelete());
730  ID.AddBoolean(S->isArrayForm());
731  VisitDecl(S->getOperatorDelete());
732}
733
734
735void StmtProfiler::VisitCXXNewExpr(CXXNewExpr *S) {
736  VisitExpr(S);
737  VisitType(S->getAllocatedType());
738  VisitDecl(S->getOperatorNew());
739  VisitDecl(S->getOperatorDelete());
740  VisitDecl(S->getConstructor());
741  ID.AddBoolean(S->isArray());
742  ID.AddInteger(S->getNumPlacementArgs());
743  ID.AddBoolean(S->isGlobalNew());
744  ID.AddBoolean(S->isParenTypeId());
745  ID.AddBoolean(S->hasInitializer());
746  ID.AddInteger(S->getNumConstructorArgs());
747}
748
749void StmtProfiler::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *S) {
750  VisitExpr(S);
751  ID.AddBoolean(S->isArrow());
752  VisitNestedNameSpecifier(S->getQualifier());
753  VisitType(S->getDestroyedType());
754}
755
756void StmtProfiler::VisitOverloadExpr(OverloadExpr *S) {
757  VisitExpr(S);
758  VisitNestedNameSpecifier(S->getQualifier());
759  VisitName(S->getName());
760  ID.AddBoolean(S->hasExplicitTemplateArgs());
761  if (S->hasExplicitTemplateArgs())
762    VisitTemplateArguments(S->getExplicitTemplateArgs().getTemplateArgs(),
763                           S->getExplicitTemplateArgs().NumTemplateArgs);
764}
765
766void
767StmtProfiler::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *S) {
768  VisitOverloadExpr(S);
769}
770
771void StmtProfiler::VisitUnaryTypeTraitExpr(UnaryTypeTraitExpr *S) {
772  VisitExpr(S);
773  ID.AddInteger(S->getTrait());
774  VisitType(S->getQueriedType());
775}
776
777void StmtProfiler::VisitBinaryTypeTraitExpr(BinaryTypeTraitExpr *S) {
778  VisitExpr(S);
779  ID.AddInteger(S->getTrait());
780  VisitType(S->getLhsType());
781  VisitType(S->getRhsType());
782}
783
784void
785StmtProfiler::VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *S) {
786  VisitExpr(S);
787  VisitName(S->getDeclName());
788  VisitNestedNameSpecifier(S->getQualifier());
789  ID.AddBoolean(S->hasExplicitTemplateArgs());
790  if (S->hasExplicitTemplateArgs())
791    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
792}
793
794void StmtProfiler::VisitExprWithCleanups(ExprWithCleanups *S) {
795  VisitExpr(S);
796}
797
798void
799StmtProfiler::VisitCXXUnresolvedConstructExpr(CXXUnresolvedConstructExpr *S) {
800  VisitExpr(S);
801  VisitType(S->getTypeAsWritten());
802}
803
804void
805StmtProfiler::VisitCXXDependentScopeMemberExpr(CXXDependentScopeMemberExpr *S) {
806  ID.AddBoolean(S->isImplicitAccess());
807  if (!S->isImplicitAccess()) {
808    VisitExpr(S);
809    ID.AddBoolean(S->isArrow());
810  }
811  VisitNestedNameSpecifier(S->getQualifier());
812  VisitName(S->getMember());
813  ID.AddBoolean(S->hasExplicitTemplateArgs());
814  if (S->hasExplicitTemplateArgs())
815    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
816}
817
818void StmtProfiler::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *S) {
819  ID.AddBoolean(S->isImplicitAccess());
820  if (!S->isImplicitAccess()) {
821    VisitExpr(S);
822    ID.AddBoolean(S->isArrow());
823  }
824  VisitNestedNameSpecifier(S->getQualifier());
825  VisitName(S->getMemberName());
826  ID.AddBoolean(S->hasExplicitTemplateArgs());
827  if (S->hasExplicitTemplateArgs())
828    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
829}
830
831void StmtProfiler::VisitCXXNoexceptExpr(CXXNoexceptExpr *S) {
832  VisitExpr(S);
833}
834
835void StmtProfiler::VisitPackExpansionExpr(PackExpansionExpr *S) {
836  VisitExpr(S);
837}
838
839void StmtProfiler::VisitSizeOfPackExpr(SizeOfPackExpr *S) {
840  VisitExpr(S);
841  VisitDecl(S->getPack());
842}
843
844void StmtProfiler::VisitOpaqueValueExpr(OpaqueValueExpr *E) {
845  VisitExpr(E);
846}
847
848void StmtProfiler::VisitObjCStringLiteral(ObjCStringLiteral *S) {
849  VisitExpr(S);
850}
851
852void StmtProfiler::VisitObjCEncodeExpr(ObjCEncodeExpr *S) {
853  VisitExpr(S);
854  VisitType(S->getEncodedType());
855}
856
857void StmtProfiler::VisitObjCSelectorExpr(ObjCSelectorExpr *S) {
858  VisitExpr(S);
859  VisitName(S->getSelector());
860}
861
862void StmtProfiler::VisitObjCProtocolExpr(ObjCProtocolExpr *S) {
863  VisitExpr(S);
864  VisitDecl(S->getProtocol());
865}
866
867void StmtProfiler::VisitObjCIvarRefExpr(ObjCIvarRefExpr *S) {
868  VisitExpr(S);
869  VisitDecl(S->getDecl());
870  ID.AddBoolean(S->isArrow());
871  ID.AddBoolean(S->isFreeIvar());
872}
873
874void StmtProfiler::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *S) {
875  VisitExpr(S);
876  if (S->isImplicitProperty()) {
877    VisitDecl(S->getImplicitPropertyGetter());
878    VisitDecl(S->getImplicitPropertySetter());
879  } else {
880    VisitDecl(S->getExplicitProperty());
881  }
882  if (S->isSuperReceiver()) {
883    ID.AddBoolean(S->isSuperReceiver());
884    VisitType(S->getSuperReceiverType());
885  }
886}
887
888void StmtProfiler::VisitObjCMessageExpr(ObjCMessageExpr *S) {
889  VisitExpr(S);
890  VisitName(S->getSelector());
891  VisitDecl(S->getMethodDecl());
892}
893
894void StmtProfiler::VisitObjCIsaExpr(ObjCIsaExpr *S) {
895  VisitExpr(S);
896  ID.AddBoolean(S->isArrow());
897}
898
899void StmtProfiler::VisitDecl(Decl *D) {
900  ID.AddInteger(D? D->getKind() : 0);
901
902  if (Canonical && D) {
903    if (NonTypeTemplateParmDecl *NTTP = dyn_cast<NonTypeTemplateParmDecl>(D)) {
904      ID.AddInteger(NTTP->getDepth());
905      ID.AddInteger(NTTP->getIndex());
906      ID.AddBoolean(NTTP->isParameterPack());
907      VisitType(NTTP->getType());
908      return;
909    }
910
911    if (ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) {
912      // The Itanium C++ ABI uses the type of a parameter when mangling
913      // expressions that involve function parameters, so we will use the
914      // parameter's type for establishing function parameter identity. That
915      // way, our definition of "equivalent" (per C++ [temp.over.link])
916      // matches the definition of "equivalent" used for name mangling.
917      VisitType(Parm->getType());
918      return;
919    }
920
921    if (TemplateTemplateParmDecl *TTP = dyn_cast<TemplateTemplateParmDecl>(D)) {
922      ID.AddInteger(TTP->getDepth());
923      ID.AddInteger(TTP->getIndex());
924      ID.AddBoolean(TTP->isParameterPack());
925      return;
926    }
927  }
928
929  ID.AddPointer(D? D->getCanonicalDecl() : 0);
930}
931
932void StmtProfiler::VisitType(QualType T) {
933  if (Canonical)
934    T = Context.getCanonicalType(T);
935
936  ID.AddPointer(T.getAsOpaquePtr());
937}
938
939void StmtProfiler::VisitName(DeclarationName Name) {
940  ID.AddPointer(Name.getAsOpaquePtr());
941}
942
943void StmtProfiler::VisitNestedNameSpecifier(NestedNameSpecifier *NNS) {
944  if (Canonical)
945    NNS = Context.getCanonicalNestedNameSpecifier(NNS);
946  ID.AddPointer(NNS);
947}
948
949void StmtProfiler::VisitTemplateName(TemplateName Name) {
950  if (Canonical)
951    Name = Context.getCanonicalTemplateName(Name);
952
953  Name.Profile(ID);
954}
955
956void StmtProfiler::VisitTemplateArguments(const TemplateArgumentLoc *Args,
957                                          unsigned NumArgs) {
958  ID.AddInteger(NumArgs);
959  for (unsigned I = 0; I != NumArgs; ++I)
960    VisitTemplateArgument(Args[I].getArgument());
961}
962
963void StmtProfiler::VisitTemplateArgument(const TemplateArgument &Arg) {
964  // Mostly repetitive with TemplateArgument::Profile!
965  ID.AddInteger(Arg.getKind());
966  switch (Arg.getKind()) {
967  case TemplateArgument::Null:
968    break;
969
970  case TemplateArgument::Type:
971    VisitType(Arg.getAsType());
972    break;
973
974  case TemplateArgument::Template:
975    VisitTemplateName(Arg.getAsTemplate());
976    break;
977
978  case TemplateArgument::Declaration:
979    VisitDecl(Arg.getAsDecl());
980    break;
981
982  case TemplateArgument::Integral:
983    Arg.getAsIntegral()->Profile(ID);
984    VisitType(Arg.getIntegralType());
985    break;
986
987  case TemplateArgument::Expression:
988    Visit(Arg.getAsExpr());
989    break;
990
991  case TemplateArgument::Pack:
992    const TemplateArgument *Pack = Arg.pack_begin();
993    for (unsigned i = 0, e = Arg.pack_size(); i != e; ++i)
994      VisitTemplateArgument(Pack[i]);
995    break;
996  }
997}
998
999void Stmt::Profile(llvm::FoldingSetNodeID &ID, ASTContext &Context,
1000                   bool Canonical) {
1001  StmtProfiler Profiler(ID, Context, Canonical);
1002  Profiler.Visit(this);
1003}
1004