StmtProfile.cpp revision 4bfe1968410ea8ffe3b4f629addd7c4bcf484765 
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  VisitNestedNameSpecifier(S->getQualifier());
215  VisitDecl(S->getDecl());
216  VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
217}
218
219void StmtProfiler::VisitPredefinedExpr(PredefinedExpr *S) {
220  VisitExpr(S);
221  ID.AddInteger(S->getIdentType());
222}
223
224void StmtProfiler::VisitIntegerLiteral(IntegerLiteral *S) {
225  VisitExpr(S);
226  S->getValue().Profile(ID);
227}
228
229void StmtProfiler::VisitCharacterLiteral(CharacterLiteral *S) {
230  VisitExpr(S);
231  ID.AddBoolean(S->isWide());
232  ID.AddInteger(S->getValue());
233}
234
235void StmtProfiler::VisitFloatingLiteral(FloatingLiteral *S) {
236  VisitExpr(S);
237  S->getValue().Profile(ID);
238  ID.AddBoolean(S->isExact());
239}
240
241void StmtProfiler::VisitImaginaryLiteral(ImaginaryLiteral *S) {
242  VisitExpr(S);
243}
244
245void StmtProfiler::VisitStringLiteral(StringLiteral *S) {
246  VisitExpr(S);
247  ID.AddString(S->getString());
248  ID.AddBoolean(S->isWide());
249}
250
251void StmtProfiler::VisitParenExpr(ParenExpr *S) {
252  VisitExpr(S);
253}
254
255void StmtProfiler::VisitParenListExpr(ParenListExpr *S) {
256  VisitExpr(S);
257}
258
259void StmtProfiler::VisitUnaryOperator(UnaryOperator *S) {
260  VisitExpr(S);
261  ID.AddInteger(S->getOpcode());
262}
263
264void StmtProfiler::VisitOffsetOfExpr(OffsetOfExpr *S) {
265  VisitType(S->getTypeSourceInfo()->getType());
266  unsigned n = S->getNumComponents();
267  for (unsigned i = 0; i < n; ++i) {
268    const OffsetOfExpr::OffsetOfNode& ON = S->getComponent(i);
269    ID.AddInteger(ON.getKind());
270    switch (ON.getKind()) {
271    case OffsetOfExpr::OffsetOfNode::Array:
272      // Expressions handled below.
273      break;
274
275    case OffsetOfExpr::OffsetOfNode::Field:
276      VisitDecl(ON.getField());
277      break;
278
279    case OffsetOfExpr::OffsetOfNode::Identifier:
280      ID.AddPointer(ON.getFieldName());
281      break;
282
283    case OffsetOfExpr::OffsetOfNode::Base:
284      // These nodes are implicit, and therefore don't need profiling.
285      break;
286    }
287  }
288
289  VisitExpr(S);
290}
291
292void StmtProfiler::VisitSizeOfAlignOfExpr(SizeOfAlignOfExpr *S) {
293  VisitExpr(S);
294  ID.AddBoolean(S->isSizeOf());
295  if (S->isArgumentType())
296    VisitType(S->getArgumentType());
297}
298
299void StmtProfiler::VisitArraySubscriptExpr(ArraySubscriptExpr *S) {
300  VisitExpr(S);
301}
302
303void StmtProfiler::VisitCallExpr(CallExpr *S) {
304  VisitExpr(S);
305}
306
307void StmtProfiler::VisitMemberExpr(MemberExpr *S) {
308  VisitExpr(S);
309  VisitDecl(S->getMemberDecl());
310  VisitNestedNameSpecifier(S->getQualifier());
311  ID.AddBoolean(S->isArrow());
312}
313
314void StmtProfiler::VisitCompoundLiteralExpr(CompoundLiteralExpr *S) {
315  VisitExpr(S);
316  ID.AddBoolean(S->isFileScope());
317}
318
319void StmtProfiler::VisitCastExpr(CastExpr *S) {
320  VisitExpr(S);
321}
322
323void StmtProfiler::VisitImplicitCastExpr(ImplicitCastExpr *S) {
324  VisitCastExpr(S);
325  ID.AddBoolean(S->isLvalueCast());
326}
327
328void StmtProfiler::VisitExplicitCastExpr(ExplicitCastExpr *S) {
329  VisitCastExpr(S);
330  VisitType(S->getTypeAsWritten());
331}
332
333void StmtProfiler::VisitCStyleCastExpr(CStyleCastExpr *S) {
334  VisitExplicitCastExpr(S);
335}
336
337void StmtProfiler::VisitBinaryOperator(BinaryOperator *S) {
338  VisitExpr(S);
339  ID.AddInteger(S->getOpcode());
340}
341
342void StmtProfiler::VisitCompoundAssignOperator(CompoundAssignOperator *S) {
343  VisitBinaryOperator(S);
344}
345
346void StmtProfiler::VisitConditionalOperator(ConditionalOperator *S) {
347  VisitExpr(S);
348}
349
350void StmtProfiler::VisitAddrLabelExpr(AddrLabelExpr *S) {
351  VisitExpr(S);
352  VisitName(S->getLabel()->getID());
353}
354
355void StmtProfiler::VisitStmtExpr(StmtExpr *S) {
356  VisitExpr(S);
357}
358
359void StmtProfiler::VisitTypesCompatibleExpr(TypesCompatibleExpr *S) {
360  VisitExpr(S);
361  VisitType(S->getArgType1());
362  VisitType(S->getArgType2());
363}
364
365void StmtProfiler::VisitShuffleVectorExpr(ShuffleVectorExpr *S) {
366  VisitExpr(S);
367}
368
369void StmtProfiler::VisitChooseExpr(ChooseExpr *S) {
370  VisitExpr(S);
371}
372
373void StmtProfiler::VisitGNUNullExpr(GNUNullExpr *S) {
374  VisitExpr(S);
375}
376
377void StmtProfiler::VisitVAArgExpr(VAArgExpr *S) {
378  VisitExpr(S);
379}
380
381void StmtProfiler::VisitInitListExpr(InitListExpr *S) {
382  if (S->getSyntacticForm()) {
383    VisitInitListExpr(S->getSyntacticForm());
384    return;
385  }
386
387  VisitExpr(S);
388}
389
390void StmtProfiler::VisitDesignatedInitExpr(DesignatedInitExpr *S) {
391  VisitExpr(S);
392  ID.AddBoolean(S->usesGNUSyntax());
393  for (DesignatedInitExpr::designators_iterator D = S->designators_begin(),
394                                             DEnd = S->designators_end();
395       D != DEnd; ++D) {
396    if (D->isFieldDesignator()) {
397      ID.AddInteger(0);
398      VisitName(D->getFieldName());
399      continue;
400    }
401
402    if (D->isArrayDesignator()) {
403      ID.AddInteger(1);
404    } else {
405      assert(D->isArrayRangeDesignator());
406      ID.AddInteger(2);
407    }
408    ID.AddInteger(D->getFirstExprIndex());
409  }
410}
411
412void StmtProfiler::VisitImplicitValueInitExpr(ImplicitValueInitExpr *S) {
413  VisitExpr(S);
414}
415
416void StmtProfiler::VisitExtVectorElementExpr(ExtVectorElementExpr *S) {
417  VisitExpr(S);
418  VisitName(&S->getAccessor());
419}
420
421void StmtProfiler::VisitBlockExpr(BlockExpr *S) {
422  VisitExpr(S);
423  VisitDecl(S->getBlockDecl());
424}
425
426void StmtProfiler::VisitBlockDeclRefExpr(BlockDeclRefExpr *S) {
427  VisitExpr(S);
428  VisitDecl(S->getDecl());
429  ID.AddBoolean(S->isByRef());
430  ID.AddBoolean(S->isConstQualAdded());
431}
432
433void StmtProfiler::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *S) {
434  VisitCallExpr(S);
435  ID.AddInteger(S->getOperator());
436}
437
438void StmtProfiler::VisitCXXMemberCallExpr(CXXMemberCallExpr *S) {
439  VisitCallExpr(S);
440}
441
442void StmtProfiler::VisitCXXNamedCastExpr(CXXNamedCastExpr *S) {
443  VisitExplicitCastExpr(S);
444}
445
446void StmtProfiler::VisitCXXStaticCastExpr(CXXStaticCastExpr *S) {
447  VisitCXXNamedCastExpr(S);
448}
449
450void StmtProfiler::VisitCXXDynamicCastExpr(CXXDynamicCastExpr *S) {
451  VisitCXXNamedCastExpr(S);
452}
453
454void StmtProfiler::VisitCXXReinterpretCastExpr(CXXReinterpretCastExpr *S) {
455  VisitCXXNamedCastExpr(S);
456}
457
458void StmtProfiler::VisitCXXConstCastExpr(CXXConstCastExpr *S) {
459  VisitCXXNamedCastExpr(S);
460}
461
462void StmtProfiler::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *S) {
463  VisitExpr(S);
464  ID.AddBoolean(S->getValue());
465}
466
467void StmtProfiler::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *S) {
468  VisitExpr(S);
469}
470
471void StmtProfiler::VisitCXXTypeidExpr(CXXTypeidExpr *S) {
472  VisitExpr(S);
473  if (S->isTypeOperand())
474    VisitType(S->getTypeOperand());
475}
476
477void StmtProfiler::VisitCXXThisExpr(CXXThisExpr *S) {
478  VisitExpr(S);
479}
480
481void StmtProfiler::VisitCXXThrowExpr(CXXThrowExpr *S) {
482  VisitExpr(S);
483}
484
485void StmtProfiler::VisitCXXDefaultArgExpr(CXXDefaultArgExpr *S) {
486  VisitExpr(S);
487  VisitDecl(S->getParam());
488}
489
490void StmtProfiler::VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *S) {
491  VisitExpr(S);
492  VisitDecl(
493         const_cast<CXXDestructorDecl *>(S->getTemporary()->getDestructor()));
494}
495
496void StmtProfiler::VisitCXXBindReferenceExpr(CXXBindReferenceExpr *S) {
497  VisitExpr(S);
498}
499
500void StmtProfiler::VisitCXXConstructExpr(CXXConstructExpr *S) {
501  VisitExpr(S);
502  VisitDecl(S->getConstructor());
503  ID.AddBoolean(S->isElidable());
504}
505
506void StmtProfiler::VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr *S) {
507  VisitExplicitCastExpr(S);
508}
509
510void StmtProfiler::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *S) {
511  VisitCXXConstructExpr(S);
512}
513
514void StmtProfiler::VisitCXXZeroInitValueExpr(CXXZeroInitValueExpr *S) {
515  VisitExpr(S);
516}
517
518void StmtProfiler::VisitCXXDeleteExpr(CXXDeleteExpr *S) {
519  VisitExpr(S);
520  ID.AddBoolean(S->isGlobalDelete());
521  ID.AddBoolean(S->isArrayForm());
522  VisitDecl(S->getOperatorDelete());
523}
524
525
526void StmtProfiler::VisitCXXNewExpr(CXXNewExpr *S) {
527  VisitExpr(S);
528  VisitType(S->getAllocatedType());
529  VisitDecl(S->getOperatorNew());
530  VisitDecl(S->getOperatorDelete());
531  VisitDecl(S->getConstructor());
532  ID.AddBoolean(S->isArray());
533  ID.AddInteger(S->getNumPlacementArgs());
534  ID.AddBoolean(S->isGlobalNew());
535  ID.AddBoolean(S->isParenTypeId());
536  ID.AddBoolean(S->hasInitializer());
537  ID.AddInteger(S->getNumConstructorArgs());
538}
539
540void StmtProfiler::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *S) {
541  VisitExpr(S);
542  ID.AddBoolean(S->isArrow());
543  VisitNestedNameSpecifier(S->getQualifier());
544  VisitType(S->getDestroyedType());
545}
546
547void
548StmtProfiler::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *S) {
549  VisitExpr(S);
550  VisitNestedNameSpecifier(S->getQualifier());
551  VisitName(S->getName());
552  ID.AddBoolean(S->hasExplicitTemplateArgs());
553  if (S->hasExplicitTemplateArgs())
554    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
555}
556
557void StmtProfiler::VisitUnaryTypeTraitExpr(UnaryTypeTraitExpr *S) {
558  VisitExpr(S);
559  ID.AddInteger(S->getTrait());
560  VisitType(S->getQueriedType());
561}
562
563void
564StmtProfiler::VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *S) {
565  VisitExpr(S);
566  VisitName(S->getDeclName());
567  VisitNestedNameSpecifier(S->getQualifier());
568  ID.AddBoolean(S->hasExplicitTemplateArgs());
569  if (S->hasExplicitTemplateArgs())
570    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
571}
572
573void StmtProfiler::VisitCXXExprWithTemporaries(CXXExprWithTemporaries *S) {
574  VisitExpr(S);
575  for (unsigned I = 0, N = S->getNumTemporaries(); I != N; ++I)
576    VisitDecl(
577      const_cast<CXXDestructorDecl *>(S->getTemporary(I)->getDestructor()));
578}
579
580void
581StmtProfiler::VisitCXXUnresolvedConstructExpr(CXXUnresolvedConstructExpr *S) {
582  VisitExpr(S);
583  VisitType(S->getTypeAsWritten());
584}
585
586void
587StmtProfiler::VisitCXXDependentScopeMemberExpr(CXXDependentScopeMemberExpr *S) {
588  ID.AddBoolean(S->isImplicitAccess());
589  if (!S->isImplicitAccess()) {
590    VisitExpr(S);
591    ID.AddBoolean(S->isArrow());
592  }
593  VisitNestedNameSpecifier(S->getQualifier());
594  VisitName(S->getMember());
595  ID.AddBoolean(S->hasExplicitTemplateArgs());
596  if (S->hasExplicitTemplateArgs())
597    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
598}
599
600void StmtProfiler::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *S) {
601  ID.AddBoolean(S->isImplicitAccess());
602  if (!S->isImplicitAccess()) {
603    VisitExpr(S);
604    ID.AddBoolean(S->isArrow());
605  }
606  VisitNestedNameSpecifier(S->getQualifier());
607  VisitName(S->getMemberName());
608  ID.AddBoolean(S->hasExplicitTemplateArgs());
609  if (S->hasExplicitTemplateArgs())
610    VisitTemplateArguments(S->getTemplateArgs(), S->getNumTemplateArgs());
611}
612
613void StmtProfiler::VisitObjCStringLiteral(ObjCStringLiteral *S) {
614  VisitExpr(S);
615}
616
617void StmtProfiler::VisitObjCEncodeExpr(ObjCEncodeExpr *S) {
618  VisitExpr(S);
619  VisitType(S->getEncodedType());
620}
621
622void StmtProfiler::VisitObjCSelectorExpr(ObjCSelectorExpr *S) {
623  VisitExpr(S);
624  VisitName(S->getSelector());
625}
626
627void StmtProfiler::VisitObjCProtocolExpr(ObjCProtocolExpr *S) {
628  VisitExpr(S);
629  VisitDecl(S->getProtocol());
630}
631
632void StmtProfiler::VisitObjCIvarRefExpr(ObjCIvarRefExpr *S) {
633  VisitExpr(S);
634  VisitDecl(S->getDecl());
635  ID.AddBoolean(S->isArrow());
636  ID.AddBoolean(S->isFreeIvar());
637}
638
639void StmtProfiler::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *S) {
640  VisitExpr(S);
641  VisitDecl(S->getProperty());
642}
643
644void StmtProfiler::VisitObjCImplicitSetterGetterRefExpr(
645                                  ObjCImplicitSetterGetterRefExpr *S) {
646  VisitExpr(S);
647  VisitDecl(S->getGetterMethod());
648  VisitDecl(S->getSetterMethod());
649  VisitDecl(S->getInterfaceDecl());
650}
651
652void StmtProfiler::VisitObjCMessageExpr(ObjCMessageExpr *S) {
653  VisitExpr(S);
654  VisitName(S->getSelector());
655  VisitDecl(S->getMethodDecl());
656}
657
658void StmtProfiler::VisitObjCSuperExpr(ObjCSuperExpr *S) {
659  VisitExpr(S);
660}
661
662void StmtProfiler::VisitObjCIsaExpr(ObjCIsaExpr *S) {
663  VisitExpr(S);
664  ID.AddBoolean(S->isArrow());
665}
666
667void StmtProfiler::VisitDecl(Decl *D) {
668  ID.AddInteger(D? D->getKind() : 0);
669
670  if (Canonical && D) {
671    if (NonTypeTemplateParmDecl *NTTP = dyn_cast<NonTypeTemplateParmDecl>(D)) {
672      ID.AddInteger(NTTP->getDepth());
673      ID.AddInteger(NTTP->getIndex());
674      VisitType(NTTP->getType());
675      return;
676    }
677
678    if (ParmVarDecl *Parm = dyn_cast<ParmVarDecl>(D)) {
679      // The Itanium C++ ABI uses the type of a parameter when mangling
680      // expressions that involve function parameters, so we will use the
681      // parameter's type for establishing function parameter identity. That
682      // way, our definition of "equivalent" (per C++ [temp.over.link])
683      // matches the definition of "equivalent" used for name mangling.
684      VisitType(Parm->getType());
685      return;
686    }
687
688    if (TemplateTemplateParmDecl *TTP = dyn_cast<TemplateTemplateParmDecl>(D)) {
689      ID.AddInteger(TTP->getDepth());
690      ID.AddInteger(TTP->getIndex());
691      return;
692    }
693  }
694
695  ID.AddPointer(D? D->getCanonicalDecl() : 0);
696}
697
698void StmtProfiler::VisitType(QualType T) {
699  if (Canonical)
700    T = Context.getCanonicalType(T);
701
702  ID.AddPointer(T.getAsOpaquePtr());
703}
704
705void StmtProfiler::VisitName(DeclarationName Name) {
706  ID.AddPointer(Name.getAsOpaquePtr());
707}
708
709void StmtProfiler::VisitNestedNameSpecifier(NestedNameSpecifier *NNS) {
710  if (Canonical)
711    NNS = Context.getCanonicalNestedNameSpecifier(NNS);
712  ID.AddPointer(NNS);
713}
714
715void StmtProfiler::VisitTemplateName(TemplateName Name) {
716  if (Canonical)
717    Name = Context.getCanonicalTemplateName(Name);
718
719  Name.Profile(ID);
720}
721
722void StmtProfiler::VisitTemplateArguments(const TemplateArgumentLoc *Args,
723                                          unsigned NumArgs) {
724  ID.AddInteger(NumArgs);
725  for (unsigned I = 0; I != NumArgs; ++I)
726    VisitTemplateArgument(Args[I].getArgument());
727}
728
729void StmtProfiler::VisitTemplateArgument(const TemplateArgument &Arg) {
730  // Mostly repetitive with TemplateArgument::Profile!
731  ID.AddInteger(Arg.getKind());
732  switch (Arg.getKind()) {
733  case TemplateArgument::Null:
734    break;
735
736  case TemplateArgument::Type:
737    VisitType(Arg.getAsType());
738    break;
739
740  case TemplateArgument::Template:
741    VisitTemplateName(Arg.getAsTemplate());
742    break;
743
744  case TemplateArgument::Declaration:
745    VisitDecl(Arg.getAsDecl());
746    break;
747
748  case TemplateArgument::Integral:
749    Arg.getAsIntegral()->Profile(ID);
750    VisitType(Arg.getIntegralType());
751    break;
752
753  case TemplateArgument::Expression:
754    Visit(Arg.getAsExpr());
755    break;
756
757  case TemplateArgument::Pack:
758    const TemplateArgument *Pack = Arg.pack_begin();
759    for (unsigned i = 0, e = Arg.pack_size(); i != e; ++i)
760      VisitTemplateArgument(Pack[i]);
761    break;
762  }
763}
764
765void Stmt::Profile(llvm::FoldingSetNodeID &ID, ASTContext &Context,
766                   bool Canonical) {
767  StmtProfiler Profiler(ID, Context, Canonical);
768  Profiler.Visit(this);
769}
770