Coverage Report

Created: 2020-09-22 08:39

/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/include/clang/Sema/Overload.h
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//===- Overload.h - C++ Overloading -----------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
5
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the data structures and types used in C++
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// overload resolution.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_SEMA_OVERLOAD_H
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#define LLVM_CLANG_SEMA_OVERLOAD_H
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#include "clang/AST/Decl.h"
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#include "clang/AST/DeclAccessPair.h"
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#include "clang/AST/DeclBase.h"
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#include "clang/AST/DeclCXX.h"
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#include "clang/AST/DeclTemplate.h"
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#include "clang/AST/Expr.h"
23
#include "clang/AST/Type.h"
24
#include "clang/Basic/LLVM.h"
25
#include "clang/Basic/SourceLocation.h"
26
#include "clang/Sema/SemaFixItUtils.h"
27
#include "clang/Sema/TemplateDeduction.h"
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/None.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/SmallPtrSet.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/AlignOf.h"
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#include "llvm/Support/Allocator.h"
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#include "llvm/Support/Casting.h"
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#include "llvm/Support/ErrorHandling.h"
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#include <cassert>
39
#include <cstddef>
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#include <cstdint>
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#include <utility>
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namespace clang {
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class APValue;
46
class ASTContext;
47
class Sema;
48
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  /// OverloadingResult - Capture the result of performing overload
50
  /// resolution.
51
  enum OverloadingResult {
52
    /// Overload resolution succeeded.
53
    OR_Success,
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55
    /// No viable function found.
56
    OR_No_Viable_Function,
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    /// Ambiguous candidates found.
59
    OR_Ambiguous,
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    /// Succeeded, but refers to a deleted function.
62
    OR_Deleted
63
  };
64
65
  enum OverloadCandidateDisplayKind {
66
    /// Requests that all candidates be shown.  Viable candidates will
67
    /// be printed first.
68
    OCD_AllCandidates,
69
70
    /// Requests that only viable candidates be shown.
71
    OCD_ViableCandidates,
72
73
    /// Requests that only tied-for-best candidates be shown.
74
    OCD_AmbiguousCandidates
75
  };
76
77
  /// The parameter ordering that will be used for the candidate. This is
78
  /// used to represent C++20 binary operator rewrites that reverse the order
79
  /// of the arguments. If the parameter ordering is Reversed, the Args list is
80
  /// reversed (but obviously the ParamDecls for the function are not).
81
  ///
82
  /// After forming an OverloadCandidate with reversed parameters, the list
83
  /// of conversions will (as always) be indexed by argument, so will be
84
  /// in reverse parameter order.
85
  enum class OverloadCandidateParamOrder : char { Normal, Reversed };
86
87
  /// The kinds of rewrite we perform on overload candidates. Note that the
88
  /// values here are chosen to serve as both bitflags and as a rank (lower
89
  /// values are preferred by overload resolution).
90
  enum OverloadCandidateRewriteKind : unsigned {
91
    /// Candidate is not a rewritten candidate.
92
    CRK_None = 0x0,
93
94
    /// Candidate is a rewritten candidate with a different operator name.
95
    CRK_DifferentOperator = 0x1,
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97
    /// Candidate is a rewritten candidate with a reversed order of parameters.
98
    CRK_Reversed = 0x2,
99
  };
100
101
  /// ImplicitConversionKind - The kind of implicit conversion used to
102
  /// convert an argument to a parameter's type. The enumerator values
103
  /// match with the table titled 'Conversions' in [over.ics.scs] and are listed
104
  /// such that better conversion kinds have smaller values.
105
  enum ImplicitConversionKind {
106
    /// Identity conversion (no conversion)
107
    ICK_Identity = 0,
108
109
    /// Lvalue-to-rvalue conversion (C++ [conv.lval])
110
    ICK_Lvalue_To_Rvalue,
111
112
    /// Array-to-pointer conversion (C++ [conv.array])
113
    ICK_Array_To_Pointer,
114
115
    /// Function-to-pointer (C++ [conv.array])
116
    ICK_Function_To_Pointer,
117
118
    /// Function pointer conversion (C++17 [conv.fctptr])
119
    ICK_Function_Conversion,
120
121
    /// Qualification conversions (C++ [conv.qual])
122
    ICK_Qualification,
123
124
    /// Integral promotions (C++ [conv.prom])
125
    ICK_Integral_Promotion,
126
127
    /// Floating point promotions (C++ [conv.fpprom])
128
    ICK_Floating_Promotion,
129
130
    /// Complex promotions (Clang extension)
131
    ICK_Complex_Promotion,
132
133
    /// Integral conversions (C++ [conv.integral])
134
    ICK_Integral_Conversion,
135
136
    /// Floating point conversions (C++ [conv.double]
137
    ICK_Floating_Conversion,
138
139
    /// Complex conversions (C99 6.3.1.6)
140
    ICK_Complex_Conversion,
141
142
    /// Floating-integral conversions (C++ [conv.fpint])
143
    ICK_Floating_Integral,
144
145
    /// Pointer conversions (C++ [conv.ptr])
146
    ICK_Pointer_Conversion,
147
148
    /// Pointer-to-member conversions (C++ [conv.mem])
149
    ICK_Pointer_Member,
150
151
    /// Boolean conversions (C++ [conv.bool])
152
    ICK_Boolean_Conversion,
153
154
    /// Conversions between compatible types in C99
155
    ICK_Compatible_Conversion,
156
157
    /// Derived-to-base (C++ [over.best.ics])
158
    ICK_Derived_To_Base,
159
160
    /// Vector conversions
161
    ICK_Vector_Conversion,
162
163
    /// Arm SVE Vector conversions
164
    ICK_SVE_Vector_Conversion,
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166
    /// A vector splat from an arithmetic type
167
    ICK_Vector_Splat,
168
169
    /// Complex-real conversions (C99 6.3.1.7)
170
    ICK_Complex_Real,
171
172
    /// Block Pointer conversions
173
    ICK_Block_Pointer_Conversion,
174
175
    /// Transparent Union Conversions
176
    ICK_TransparentUnionConversion,
177
178
    /// Objective-C ARC writeback conversion
179
    ICK_Writeback_Conversion,
180
181
    /// Zero constant to event (OpenCL1.2 6.12.10)
182
    ICK_Zero_Event_Conversion,
183
184
    /// Zero constant to queue
185
    ICK_Zero_Queue_Conversion,
186
187
    /// Conversions allowed in C, but not C++
188
    ICK_C_Only_Conversion,
189
190
    /// C-only conversion between pointers with incompatible types
191
    ICK_Incompatible_Pointer_Conversion,
192
193
    /// The number of conversion kinds
194
    ICK_Num_Conversion_Kinds,
195
  };
196
197
  /// ImplicitConversionRank - The rank of an implicit conversion
198
  /// kind. The enumerator values match with Table 9 of (C++
199
  /// 13.3.3.1.1) and are listed such that better conversion ranks
200
  /// have smaller values.
201
  enum ImplicitConversionRank {
202
    /// Exact Match
203
    ICR_Exact_Match = 0,
204
205
    /// Promotion
206
    ICR_Promotion,
207
208
    /// Conversion
209
    ICR_Conversion,
210
211
    /// OpenCL Scalar Widening
212
    ICR_OCL_Scalar_Widening,
213
214
    /// Complex <-> Real conversion
215
    ICR_Complex_Real_Conversion,
216
217
    /// ObjC ARC writeback conversion
218
    ICR_Writeback_Conversion,
219
220
    /// Conversion only allowed in the C standard (e.g. void* to char*).
221
    ICR_C_Conversion,
222
223
    /// Conversion not allowed by the C standard, but that we accept as an
224
    /// extension anyway.
225
    ICR_C_Conversion_Extension
226
  };
227
228
  ImplicitConversionRank GetConversionRank(ImplicitConversionKind Kind);
229
230
  /// NarrowingKind - The kind of narrowing conversion being performed by a
231
  /// standard conversion sequence according to C++11 [dcl.init.list]p7.
232
  enum NarrowingKind {
233
    /// Not a narrowing conversion.
234
    NK_Not_Narrowing,
235
236
    /// A narrowing conversion by virtue of the source and destination types.
237
    NK_Type_Narrowing,
238
239
    /// A narrowing conversion, because a constant expression got narrowed.
240
    NK_Constant_Narrowing,
241
242
    /// A narrowing conversion, because a non-constant-expression variable might
243
    /// have got narrowed.
244
    NK_Variable_Narrowing,
245
246
    /// Cannot tell whether this is a narrowing conversion because the
247
    /// expression is value-dependent.
248
    NK_Dependent_Narrowing,
249
  };
250
251
  /// StandardConversionSequence - represents a standard conversion
252
  /// sequence (C++ 13.3.3.1.1). A standard conversion sequence
253
  /// contains between zero and three conversions. If a particular
254
  /// conversion is not needed, it will be set to the identity conversion
255
  /// (ICK_Identity). Note that the three conversions are
256
  /// specified as separate members (rather than in an array) so that
257
  /// we can keep the size of a standard conversion sequence to a
258
  /// single word.
259
  class StandardConversionSequence {
260
  public:
261
    /// First -- The first conversion can be an lvalue-to-rvalue
262
    /// conversion, array-to-pointer conversion, or
263
    /// function-to-pointer conversion.
264
    ImplicitConversionKind First : 8;
265
266
    /// Second - The second conversion can be an integral promotion,
267
    /// floating point promotion, integral conversion, floating point
268
    /// conversion, floating-integral conversion, pointer conversion,
269
    /// pointer-to-member conversion, or boolean conversion.
270
    ImplicitConversionKind Second : 8;
271
272
    /// Third - The third conversion can be a qualification conversion
273
    /// or a function conversion.
274
    ImplicitConversionKind Third : 8;
275
276
    /// Whether this is the deprecated conversion of a
277
    /// string literal to a pointer to non-const character data
278
    /// (C++ 4.2p2).
279
    unsigned DeprecatedStringLiteralToCharPtr : 1;
280
281
    /// Whether the qualification conversion involves a change in the
282
    /// Objective-C lifetime (for automatic reference counting).
283
    unsigned QualificationIncludesObjCLifetime : 1;
284
285
    /// IncompatibleObjC - Whether this is an Objective-C conversion
286
    /// that we should warn about (if we actually use it).
287
    unsigned IncompatibleObjC : 1;
288
289
    /// ReferenceBinding - True when this is a reference binding
290
    /// (C++ [over.ics.ref]).
291
    unsigned ReferenceBinding : 1;
292
293
    /// DirectBinding - True when this is a reference binding that is a
294
    /// direct binding (C++ [dcl.init.ref]).
295
    unsigned DirectBinding : 1;
296
297
    /// Whether this is an lvalue reference binding (otherwise, it's
298
    /// an rvalue reference binding).
299
    unsigned IsLvalueReference : 1;
300
301
    /// Whether we're binding to a function lvalue.
302
    unsigned BindsToFunctionLvalue : 1;
303
304
    /// Whether we're binding to an rvalue.
305
    unsigned BindsToRvalue : 1;
306
307
    /// Whether this binds an implicit object argument to a
308
    /// non-static member function without a ref-qualifier.
309
    unsigned BindsImplicitObjectArgumentWithoutRefQualifier : 1;
310
311
    /// Whether this binds a reference to an object with a different
312
    /// Objective-C lifetime qualifier.
313
    unsigned ObjCLifetimeConversionBinding : 1;
314
315
    /// FromType - The type that this conversion is converting
316
    /// from. This is an opaque pointer that can be translated into a
317
    /// QualType.
318
    void *FromTypePtr;
319
320
    /// ToType - The types that this conversion is converting to in
321
    /// each step. This is an opaque pointer that can be translated
322
    /// into a QualType.
323
    void *ToTypePtrs[3];
324
325
    /// CopyConstructor - The copy constructor that is used to perform
326
    /// this conversion, when the conversion is actually just the
327
    /// initialization of an object via copy constructor. Such
328
    /// conversions are either identity conversions or derived-to-base
329
    /// conversions.
330
    CXXConstructorDecl *CopyConstructor;
331
    DeclAccessPair FoundCopyConstructor;
332
333
24.9M
    void setFromType(QualType T) { FromTypePtr = T.getAsOpaquePtr(); }
334
335
67.6M
    void setToType(unsigned Idx, QualType T) {
336
67.6M
      assert(Idx < 3 && "To type index is out of range");
337
67.6M
      ToTypePtrs[Idx] = T.getAsOpaquePtr();
338
67.6M
    }
339
340
1.60M
    void setAllToTypes(QualType T) {
341
1.60M
      ToTypePtrs[0] = T.getAsOpaquePtr();
342
1.60M
      ToTypePtrs[1] = ToTypePtrs[0];
343
1.60M
      ToTypePtrs[2] = ToTypePtrs[0];
344
1.60M
    }
345
346
11.9M
    QualType getFromType() const {
347
11.9M
      return QualType::getFromOpaquePtr(FromTypePtr);
348
11.9M
    }
349
350
30.1M
    QualType getToType(unsigned Idx) const {
351
30.1M
      assert(Idx < 3 && "To type index is out of range");
352
30.1M
      return QualType::getFromOpaquePtr(ToTypePtrs[Idx]);
353
30.1M
    }
354
355
    void setAsIdentityConversion();
356
357
40.9M
    bool isIdentityConversion() const {
358
40.9M
      return Second == ICK_Identity && 
Third == ICK_Identity14.8M
;
359
40.9M
    }
360
361
    ImplicitConversionRank getRank() const;
362
    NarrowingKind
363
    getNarrowingKind(ASTContext &Context, const Expr *Converted,
364
                     APValue &ConstantValue, QualType &ConstantType,
365
                     bool IgnoreFloatToIntegralConversion = false) const;
366
    bool isPointerConversionToBool() const;
367
    bool isPointerConversionToVoidPointer(ASTContext& Context) const;
368
    void dump() const;
369
  };
370
371
  /// UserDefinedConversionSequence - Represents a user-defined
372
  /// conversion sequence (C++ 13.3.3.1.2).
373
  struct UserDefinedConversionSequence {
374
    /// Represents the standard conversion that occurs before
375
    /// the actual user-defined conversion.
376
    ///
377
    /// C++11 13.3.3.1.2p1:
378
    ///   If the user-defined conversion is specified by a constructor
379
    ///   (12.3.1), the initial standard conversion sequence converts
380
    ///   the source type to the type required by the argument of the
381
    ///   constructor. If the user-defined conversion is specified by
382
    ///   a conversion function (12.3.2), the initial standard
383
    ///   conversion sequence converts the source type to the implicit
384
    ///   object parameter of the conversion function.
385
    StandardConversionSequence Before;
386
387
    /// EllipsisConversion - When this is true, it means user-defined
388
    /// conversion sequence starts with a ... (ellipsis) conversion, instead of
389
    /// a standard conversion. In this case, 'Before' field must be ignored.
390
    // FIXME. I much rather put this as the first field. But there seems to be
391
    // a gcc code gen. bug which causes a crash in a test. Putting it here seems
392
    // to work around the crash.
393
    bool EllipsisConversion : 1;
394
395
    /// HadMultipleCandidates - When this is true, it means that the
396
    /// conversion function was resolved from an overloaded set having
397
    /// size greater than 1.
398
    bool HadMultipleCandidates : 1;
399
400
    /// After - Represents the standard conversion that occurs after
401
    /// the actual user-defined conversion.
402
    StandardConversionSequence After;
403
404
    /// ConversionFunction - The function that will perform the
405
    /// user-defined conversion. Null if the conversion is an
406
    /// aggregate initialization from an initializer list.
407
    FunctionDecl* ConversionFunction;
408
409
    /// The declaration that we found via name lookup, which might be
410
    /// the same as \c ConversionFunction or it might be a using declaration
411
    /// that refers to \c ConversionFunction.
412
    DeclAccessPair FoundConversionFunction;
413
414
    void dump() const;
415
  };
416
417
  /// Represents an ambiguous user-defined conversion sequence.
418
  struct AmbiguousConversionSequence {
419
    using ConversionSet =
420
        SmallVector<std::pair<NamedDecl *, FunctionDecl *>, 4>;
421
422
    void *FromTypePtr;
423
    void *ToTypePtr;
424
    char Buffer[sizeof(ConversionSet)];
425
426
11
    QualType getFromType() const {
427
11
      return QualType::getFromOpaquePtr(FromTypePtr);
428
11
    }
429
430
11
    QualType getToType() const {
431
11
      return QualType::getFromOpaquePtr(ToTypePtr);
432
11
    }
433
434
7.97k
    void setFromType(QualType T) { FromTypePtr = T.getAsOpaquePtr(); }
435
7.97k
    void setToType(QualType T) { ToTypePtr = T.getAsOpaquePtr(); }
436
437
47.9k
    ConversionSet &conversions() {
438
47.9k
      return *reinterpret_cast<ConversionSet*>(Buffer);
439
47.9k
    }
440
441
8.02k
    const ConversionSet &conversions() const {
442
8.02k
      return *reinterpret_cast<const ConversionSet*>(Buffer);
443
8.02k
    }
444
445
15.9k
    void addConversion(NamedDecl *Found, FunctionDecl *D) {
446
15.9k
      conversions().push_back(std::make_pair(Found, D));
447
15.9k
    }
448
449
    using iterator = ConversionSet::iterator;
450
451
0
    iterator begin() { return conversions().begin(); }
452
0
    iterator end() { return conversions().end(); }
453
454
    using const_iterator = ConversionSet::const_iterator;
455
456
11
    const_iterator begin() const { return conversions().begin(); }
457
11
    const_iterator end() const { return conversions().end(); }
458
459
    void construct();
460
    void destruct();
461
    void copyFrom(const AmbiguousConversionSequence &);
462
  };
463
464
  /// BadConversionSequence - Records information about an invalid
465
  /// conversion sequence.
466
  struct BadConversionSequence {
467
    enum FailureKind {
468
      no_conversion,
469
      unrelated_class,
470
      bad_qualifiers,
471
      lvalue_ref_to_rvalue,
472
      rvalue_ref_to_lvalue
473
    };
474
475
    // This can be null, e.g. for implicit object arguments.
476
    Expr *FromExpr;
477
478
    FailureKind Kind;
479
480
  private:
481
    // The type we're converting from (an opaque QualType).
482
    void *FromTy;
483
484
    // The type we're converting to (an opaque QualType).
485
    void *ToTy;
486
487
  public:
488
6.06M
    void init(FailureKind K, Expr *From, QualType To) {
489
6.06M
      init(K, From->getType(), To);
490
6.06M
      FromExpr = From;
491
6.06M
    }
492
493
6.08M
    void init(FailureKind K, QualType From, QualType To) {
494
6.08M
      Kind = K;
495
6.08M
      FromExpr = nullptr;
496
6.08M
      setFromType(From);
497
6.08M
      setToType(To);
498
6.08M
    }
499
500
16.7k
    QualType getFromType() const { return QualType::getFromOpaquePtr(FromTy); }
501
16.7k
    QualType getToType() const { return QualType::getFromOpaquePtr(ToTy); }
502
503
0
    void setFromExpr(Expr *E) {
504
0
      FromExpr = E;
505
0
      setFromType(E->getType());
506
0
    }
507
508
6.08M
    void setFromType(QualType T) { FromTy = T.getAsOpaquePtr(); }
509
6.08M
    void setToType(QualType T) { ToTy = T.getAsOpaquePtr(); }
510
  };
511
512
  /// ImplicitConversionSequence - Represents an implicit conversion
513
  /// sequence, which may be a standard conversion sequence
514
  /// (C++ 13.3.3.1.1), user-defined conversion sequence (C++ 13.3.3.1.2),
515
  /// or an ellipsis conversion sequence (C++ 13.3.3.1.3).
516
  class ImplicitConversionSequence {
517
  public:
518
    /// Kind - The kind of implicit conversion sequence. BadConversion
519
    /// specifies that there is no conversion from the source type to
520
    /// the target type.  AmbiguousConversion represents the unique
521
    /// ambiguous conversion (C++0x [over.best.ics]p10).
522
    enum Kind {
523
      StandardConversion = 0,
524
      UserDefinedConversion,
525
      AmbiguousConversion,
526
      EllipsisConversion,
527
      BadConversion
528
    };
529
530
  private:
531
    enum {
532
      Uninitialized = BadConversion + 1
533
    };
534
535
    /// ConversionKind - The kind of implicit conversion sequence.
536
    unsigned ConversionKind : 30;
537
538
    /// Whether the target is really a std::initializer_list, and the
539
    /// sequence only represents the worst element conversion.
540
    unsigned StdInitializerListElement : 1;
541
542
29.4M
    void setKind(Kind K) {
543
29.4M
      destruct();
544
29.4M
      ConversionKind = K;
545
29.4M
    }
546
547
125M
    void destruct() {
548
125M
      if (ConversionKind == AmbiguousConversion) 
Ambiguous.destruct()15.9k
;
549
125M
    }
550
551
  public:
552
    union {
553
      /// When ConversionKind == StandardConversion, provides the
554
      /// details of the standard conversion sequence.
555
      StandardConversionSequence Standard;
556
557
      /// When ConversionKind == UserDefinedConversion, provides the
558
      /// details of the user-defined conversion sequence.
559
      UserDefinedConversionSequence UserDefined;
560
561
      /// When ConversionKind == AmbiguousConversion, provides the
562
      /// details of the ambiguous conversion.
563
      AmbiguousConversionSequence Ambiguous;
564
565
      /// When ConversionKind == BadConversion, provides the details
566
      /// of the bad conversion.
567
      BadConversionSequence Bad;
568
    };
569
570
    ImplicitConversionSequence()
571
53.1M
        : ConversionKind(Uninitialized), StdInitializerListElement(false) {
572
53.1M
      Standard.setAsIdentityConversion();
573
53.1M
    }
574
575
    ImplicitConversionSequence(const ImplicitConversionSequence &Other)
576
        : ConversionKind(Other.ConversionKind),
577
43.2M
          StdInitializerListElement(Other.StdInitializerListElement) {
578
43.2M
      switch (ConversionKind) {
579
0
      case Uninitialized: break;
580
37.2M
      case StandardConversion: Standard = Other.Standard; break;
581
420k
      case UserDefinedConversion: UserDefined = Other.UserDefined; break;
582
8.00k
      case AmbiguousConversion: Ambiguous.copyFrom(Other.Ambiguous); break;
583
0
      case EllipsisConversion: break;
584
5.55M
      case BadConversion: Bad = Other.Bad; break;
585
43.2M
      }
586
43.2M
    }
587
588
    ImplicitConversionSequence &
589
18.0M
    operator=(const ImplicitConversionSequence &Other) {
590
18.0M
      destruct();
591
18.0M
      new (this) ImplicitConversionSequence(Other);
592
18.0M
      return *this;
593
18.0M
    }
594
595
78.3M
    ~ImplicitConversionSequence() {
596
78.3M
      destruct();
597
78.3M
    }
598
599
305M
    Kind getKind() const {
600
305M
      assert(isInitialized() && "querying uninitialized conversion");
601
305M
      return Kind(ConversionKind);
602
305M
    }
603
604
    /// Return a ranking of the implicit conversion sequence
605
    /// kind, where smaller ranks represent better conversion
606
    /// sequences.
607
    ///
608
    /// In particular, this routine gives user-defined conversion
609
    /// sequences and ambiguous conversion sequences the same rank,
610
    /// per C++ [over.best.ics]p10.
611
65.3M
    unsigned getKindRank() const {
612
65.3M
      switch (getKind()) {
613
62.6M
      case StandardConversion:
614
62.6M
        return 0;
615
616
2.52M
      case UserDefinedConversion:
617
2.52M
      case AmbiguousConversion:
618
2.52M
        return 1;
619
620
88.2k
      case EllipsisConversion:
621
88.2k
        return 2;
622
623
47.6k
      case BadConversion:
624
47.6k
        return 3;
625
0
      }
626
627
0
      llvm_unreachable("Invalid ImplicitConversionSequence::Kind!");
628
0
    }
629
630
39.1M
    bool isBad() const { return getKind() == BadConversion; }
631
90.4M
    bool isStandard() const { return getKind() == StandardConversion; }
632
25.4k
    bool isEllipsis() const { return getKind() == EllipsisConversion; }
633
1.00k
    bool isAmbiguous() const { return getKind() == AmbiguousConversion; }
634
65.0M
    bool isUserDefined() const { return getKind() == UserDefinedConversion; }
635
1.12k
    bool isFailure() const { return isBad() || 
isAmbiguous()898
; }
636
637
    /// Determines whether this conversion sequence has been
638
    /// initialized.  Most operations should never need to query
639
    /// uninitialized conversions and should assert as above.
640
309M
    bool isInitialized() const { return ConversionKind != Uninitialized; }
641
642
    /// Sets this sequence as a bad conversion for an explicit argument.
643
    void setBad(BadConversionSequence::FailureKind Failure,
644
6.06M
                Expr *FromExpr, QualType ToType) {
645
6.06M
      setKind(BadConversion);
646
6.06M
      Bad.init(Failure, FromExpr, ToType);
647
6.06M
    }
648
649
    /// Sets this sequence as a bad conversion for an implicit argument.
650
    void setBad(BadConversionSequence::FailureKind Failure,
651
18.9k
                QualType FromType, QualType ToType) {
652
18.9k
      setKind(BadConversion);
653
18.9k
      Bad.init(Failure, FromType, ToType);
654
18.9k
    }
655
656
22.9M
    void setStandard() { setKind(StandardConversion); }
657
86.9k
    void setEllipsis() { setKind(EllipsisConversion); }
658
398k
    void setUserDefined() { setKind(UserDefinedConversion); }
659
660
7.97k
    void setAmbiguous() {
661
7.97k
      if (ConversionKind == AmbiguousConversion) 
return0
;
662
7.97k
      ConversionKind = AmbiguousConversion;
663
7.97k
      Ambiguous.construct();
664
7.97k
    }
665
666
50
    void setAsIdentityConversion(QualType T) {
667
50
      setStandard();
668
50
      Standard.setAsIdentityConversion();
669
50
      Standard.setFromType(T);
670
50
      Standard.setAllToTypes(T);
671
50
    }
672
673
    /// Whether the target is really a std::initializer_list, and the
674
    /// sequence only represents the worst element conversion.
675
48.5M
    bool isStdInitializerListElement() const {
676
48.5M
      return StdInitializerListElement;
677
48.5M
    }
678
679
822
    void setStdInitializerListElement(bool V = true) {
680
822
      StdInitializerListElement = V;
681
822
    }
682
683
    /// Form an "implicit" conversion sequence from nullptr_t to bool, for a
684
    /// direct-initialization of a bool object from nullptr_t.
685
    static ImplicitConversionSequence getNullptrToBool(QualType SourceType,
686
                                                       QualType DestType,
687
26
                                                       bool NeedLValToRVal) {
688
26
      ImplicitConversionSequence ICS;
689
26
      ICS.setStandard();
690
26
      ICS.Standard.setAsIdentityConversion();
691
26
      ICS.Standard.setFromType(SourceType);
692
26
      if (NeedLValToRVal)
693
1
        ICS.Standard.First = ICK_Lvalue_To_Rvalue;
694
26
      ICS.Standard.setToType(0, SourceType);
695
26
      ICS.Standard.Second = ICK_Boolean_Conversion;
696
26
      ICS.Standard.setToType(1, DestType);
697
26
      ICS.Standard.setToType(2, DestType);
698
26
      return ICS;
699
26
    }
700
701
    // The result of a comparison between implicit conversion
702
    // sequences. Use Sema::CompareImplicitConversionSequences to
703
    // actually perform the comparison.
704
    enum CompareKind {
705
      Better = -1,
706
      Indistinguishable = 0,
707
      Worse = 1
708
    };
709
710
    void DiagnoseAmbiguousConversion(Sema &S,
711
                                     SourceLocation CaretLoc,
712
                                     const PartialDiagnostic &PDiag) const;
713
714
    void dump() const;
715
  };
716
717
  enum OverloadFailureKind {
718
    ovl_fail_too_many_arguments,
719
    ovl_fail_too_few_arguments,
720
    ovl_fail_bad_conversion,
721
    ovl_fail_bad_deduction,
722
723
    /// This conversion candidate was not considered because it
724
    /// duplicates the work of a trivial or derived-to-base
725
    /// conversion.
726
    ovl_fail_trivial_conversion,
727
728
    /// This conversion candidate was not considered because it is
729
    /// an illegal instantiation of a constructor temploid: it is
730
    /// callable with one argument, we only have one argument, and
731
    /// its first parameter type is exactly the type of the class.
732
    ///
733
    /// Defining such a constructor directly is illegal, and
734
    /// template-argument deduction is supposed to ignore such
735
    /// instantiations, but we can still get one with the right
736
    /// kind of implicit instantiation.
737
    ovl_fail_illegal_constructor,
738
739
    /// This conversion candidate is not viable because its result
740
    /// type is not implicitly convertible to the desired type.
741
    ovl_fail_bad_final_conversion,
742
743
    /// This conversion function template specialization candidate is not
744
    /// viable because the final conversion was not an exact match.
745
    ovl_fail_final_conversion_not_exact,
746
747
    /// (CUDA) This candidate was not viable because the callee
748
    /// was not accessible from the caller's target (i.e. host->device,
749
    /// global->host, device->host).
750
    ovl_fail_bad_target,
751
752
    /// This candidate function was not viable because an enable_if
753
    /// attribute disabled it.
754
    ovl_fail_enable_if,
755
756
    /// This candidate constructor or conversion function is explicit but
757
    /// the context doesn't permit explicit functions.
758
    ovl_fail_explicit,
759
760
    /// This candidate was not viable because its address could not be taken.
761
    ovl_fail_addr_not_available,
762
763
    /// This candidate was not viable because its OpenCL extension is disabled.
764
    ovl_fail_ext_disabled,
765
766
    /// This inherited constructor is not viable because it would slice the
767
    /// argument.
768
    ovl_fail_inhctor_slice,
769
770
    /// This candidate was not viable because it is a non-default multiversioned
771
    /// function.
772
    ovl_non_default_multiversion_function,
773
774
    /// This constructor/conversion candidate fail due to an address space
775
    /// mismatch between the object being constructed and the overload
776
    /// candidate.
777
    ovl_fail_object_addrspace_mismatch,
778
779
    /// This candidate was not viable because its associated constraints were
780
    /// not satisfied.
781
    ovl_fail_constraints_not_satisfied,
782
  };
783
784
  /// A list of implicit conversion sequences for the arguments of an
785
  /// OverloadCandidate.
786
  using ConversionSequenceList =
787
      llvm::MutableArrayRef<ImplicitConversionSequence>;
788
789
  /// OverloadCandidate - A single candidate in an overload set (C++ 13.3).
790
  struct OverloadCandidate {
791
    /// Function - The actual function that this candidate
792
    /// represents. When NULL, this is a built-in candidate
793
    /// (C++ [over.oper]) or a surrogate for a conversion to a
794
    /// function pointer or reference (C++ [over.call.object]).
795
    FunctionDecl *Function;
796
797
    /// FoundDecl - The original declaration that was looked up /
798
    /// invented / otherwise found, together with its access.
799
    /// Might be a UsingShadowDecl or a FunctionTemplateDecl.
800
    DeclAccessPair FoundDecl;
801
802
    /// BuiltinParamTypes - Provides the parameter types of a built-in overload
803
    /// candidate. Only valid when Function is NULL.
804
    QualType BuiltinParamTypes[3];
805
806
    /// Surrogate - The conversion function for which this candidate
807
    /// is a surrogate, but only if IsSurrogate is true.
808
    CXXConversionDecl *Surrogate;
809
810
    /// The conversion sequences used to convert the function arguments
811
    /// to the function parameters. Note that these are indexed by argument,
812
    /// so may not match the parameter order of Function.
813
    ConversionSequenceList Conversions;
814
815
    /// The FixIt hints which can be used to fix the Bad candidate.
816
    ConversionFixItGenerator Fix;
817
818
    /// Viable - True to indicate that this overload candidate is viable.
819
    bool Viable : 1;
820
821
    /// Whether this candidate is the best viable function, or tied for being
822
    /// the best viable function.
823
    ///
824
    /// For an ambiguous overload resolution, indicates whether this candidate
825
    /// was part of the ambiguity kernel: the minimal non-empty set of viable
826
    /// candidates such that all elements of the ambiguity kernel are better
827
    /// than all viable candidates not in the ambiguity kernel.
828
    bool Best : 1;
829
830
    /// IsSurrogate - True to indicate that this candidate is a
831
    /// surrogate for a conversion to a function pointer or reference
832
    /// (C++ [over.call.object]).
833
    bool IsSurrogate : 1;
834
835
    /// IgnoreObjectArgument - True to indicate that the first
836
    /// argument's conversion, which for this function represents the
837
    /// implicit object argument, should be ignored. This will be true
838
    /// when the candidate is a static member function (where the
839
    /// implicit object argument is just a placeholder) or a
840
    /// non-static member function when the call doesn't have an
841
    /// object argument.
842
    bool IgnoreObjectArgument : 1;
843
844
    /// True if the candidate was found using ADL.
845
    CallExpr::ADLCallKind IsADLCandidate : 1;
846
847
    /// Whether this is a rewritten candidate, and if so, of what kind?
848
    unsigned RewriteKind : 2;
849
850
    /// FailureKind - The reason why this candidate is not viable.
851
    /// Actually an OverloadFailureKind.
852
    unsigned char FailureKind;
853
854
    /// The number of call arguments that were explicitly provided,
855
    /// to be used while performing partial ordering of function templates.
856
    unsigned ExplicitCallArguments;
857
858
    union {
859
      DeductionFailureInfo DeductionFailure;
860
861
      /// FinalConversion - For a conversion function (where Function is
862
      /// a CXXConversionDecl), the standard conversion that occurs
863
      /// after the call to the overload candidate to convert the result
864
      /// of calling the conversion function to the required type.
865
      StandardConversionSequence FinalConversion;
866
    };
867
868
    /// Get RewriteKind value in OverloadCandidateRewriteKind type (This
869
    /// function is to workaround the spurious GCC bitfield enum warning)
870
776k
    OverloadCandidateRewriteKind getRewriteKind() const {
871
776k
      return static_cast<OverloadCandidateRewriteKind>(RewriteKind);
872
776k
    }
873
874
764k
    bool isReversed() const { return getRewriteKind() & CRK_Reversed; }
875
876
    /// hasAmbiguousConversion - Returns whether this overload
877
    /// candidate requires an ambiguous conversion or not.
878
0
    bool hasAmbiguousConversion() const {
879
0
      for (auto &C : Conversions) {
880
0
        if (!C.isInitialized()) return false;
881
0
        if (C.isAmbiguous()) return true;
882
0
      }
883
0
      return false;
884
0
    }
885
886
8.36k
    bool TryToFixBadConversion(unsigned Idx, Sema &S) {
887
8.36k
      bool CanFix = Fix.tryToFixConversion(
888
8.36k
                      Conversions[Idx].Bad.FromExpr,
889
8.36k
                      Conversions[Idx].Bad.getFromType(),
890
8.36k
                      Conversions[Idx].Bad.getToType(), S);
891
892
      // If at least one conversion fails, the candidate cannot be fixed.
893
8.36k
      if (!CanFix)
894
8.31k
        Fix.clear();
895
896
8.36k
      return CanFix;
897
8.36k
    }
898
899
3.71k
    unsigned getNumParams() const {
900
3.71k
      if (IsSurrogate) {
901
7
        QualType STy = Surrogate->getConversionType();
902
14
        while (STy->isPointerType() || 
STy->isReferenceType()7
)
903
7
          STy = STy->getPointeeType();
904
7
        return STy->castAs<FunctionProtoType>()->getNumParams();
905
7
      }
906
3.70k
      if (Function)
907
3.70k
        return Function->getNumParams();
908
0
      return ExplicitCallArguments;
909
0
    }
910
911
  private:
912
    friend class OverloadCandidateSet;
913
    OverloadCandidate()
914
13.7M
        : IsSurrogate(false), IsADLCandidate(CallExpr::NotADL), RewriteKind(CRK_None) {}
915
  };
916
917
  /// OverloadCandidateSet - A set of overload candidates, used in C++
918
  /// overload resolution (C++ 13.3).
919
  class OverloadCandidateSet {
920
  public:
921
    enum CandidateSetKind {
922
      /// Normal lookup.
923
      CSK_Normal,
924
925
      /// C++ [over.match.oper]:
926
      /// Lookup of operator function candidates in a call using operator
927
      /// syntax. Candidates that have no parameters of class type will be
928
      /// skipped unless there is a parameter of (reference to) enum type and
929
      /// the corresponding argument is of the same enum type.
930
      CSK_Operator,
931
932
      /// C++ [over.match.copy]:
933
      /// Copy-initialization of an object of class type by user-defined
934
      /// conversion.
935
      CSK_InitByUserDefinedConversion,
936
937
      /// C++ [over.match.ctor], [over.match.list]
938
      /// Initialization of an object of class type by constructor,
939
      /// using either a parenthesized or braced list of arguments.
940
      CSK_InitByConstructor,
941
    };
942
943
    /// Information about operator rewrites to consider when adding operator
944
    /// functions to a candidate set.
945
    struct OperatorRewriteInfo {
946
      OperatorRewriteInfo()
947
15.9M
          : OriginalOperator(OO_None), AllowRewrittenCandidates(false) {}
948
      OperatorRewriteInfo(OverloadedOperatorKind Op, bool AllowRewritten)
949
110k
          : OriginalOperator(Op), AllowRewrittenCandidates(AllowRewritten) {}
950
951
      /// The original operator as written in the source.
952
      OverloadedOperatorKind OriginalOperator;
953
      /// Whether we should include rewritten candidates in the overload set.
954
      bool AllowRewrittenCandidates;
955
956
      /// Would use of this function result in a rewrite using a different
957
      /// operator?
958
4.62M
      bool isRewrittenOperator(const FunctionDecl *FD) {
959
4.62M
        return OriginalOperator &&
960
559k
               FD->getDeclName().getCXXOverloadedOperator() != OriginalOperator;
961
4.62M
      }
962
963
384k
      bool isAcceptableCandidate(const FunctionDecl *FD) {
964
384k
        if (!OriginalOperator)
965
11.0k
          return true;
966
967
        // For an overloaded operator, we can have candidates with a different
968
        // name in our unqualified lookup set. Make sure we only consider the
969
        // ones we're supposed to.
970
373k
        OverloadedOperatorKind OO =
971
373k
            FD->getDeclName().getCXXOverloadedOperator();
972
373k
        return OO && (OO == OriginalOperator ||
973
577
                      (AllowRewrittenCandidates &&
974
458
                       OO == getRewrittenOverloadedOperator(OriginalOperator)));
975
373k
      }
976
977
      /// Determine the kind of rewrite that should be performed for this
978
      /// candidate.
979
      OverloadCandidateRewriteKind
980
4.62M
      getRewriteKind(const FunctionDecl *FD, OverloadCandidateParamOrder PO) {
981
4.62M
        OverloadCandidateRewriteKind CRK = CRK_None;
982
4.62M
        if (isRewrittenOperator(FD))
983
1.28k
          CRK = OverloadCandidateRewriteKind(CRK | CRK_DifferentOperator);
984
4.62M
        if (PO == OverloadCandidateParamOrder::Reversed)
985
921
          CRK = OverloadCandidateRewriteKind(CRK | CRK_Reversed);
986
4.62M
        return CRK;
987
4.62M
      }
988
989
      /// Determines whether this operator could be implemented by a function
990
      /// with reversed parameter order.
991
715
      bool isReversible() {
992
715
        return AllowRewrittenCandidates && OriginalOperator &&
993
715
               (getRewrittenOverloadedOperator(OriginalOperator) != OO_None ||
994
420
                shouldAddReversed(OriginalOperator));
995
715
      }
996
997
      /// Determine whether we should consider looking for and adding reversed
998
      /// candidates for operator Op.
999
      bool shouldAddReversed(OverloadedOperatorKind Op);
1000
1001
      /// Determine whether we should add a rewritten candidate for \p FD with
1002
      /// reversed parameter order.
1003
      bool shouldAddReversed(ASTContext &Ctx, const FunctionDecl *FD);
1004
    };
1005
1006
  private:
1007
    SmallVector<OverloadCandidate, 16> Candidates;
1008
    llvm::SmallPtrSet<uintptr_t, 16> Functions;
1009
1010
    // Allocator for ConversionSequenceLists. We store the first few of these
1011
    // inline to avoid allocation for small sets.
1012
    llvm::BumpPtrAllocator SlabAllocator;
1013
1014
    SourceLocation Loc;
1015
    CandidateSetKind Kind;
1016
    OperatorRewriteInfo RewriteInfo;
1017
1018
    constexpr static unsigned NumInlineBytes =
1019
        24 * sizeof(ImplicitConversionSequence);
1020
    unsigned NumInlineBytesUsed = 0;
1021
    alignas(void *) char InlineSpace[NumInlineBytes];
1022
1023
    // Address space of the object being constructed.
1024
    LangAS DestAS = LangAS::Default;
1025
1026
    /// If we have space, allocates from inline storage. Otherwise, allocates
1027
    /// from the slab allocator.
1028
    /// FIXME: It would probably be nice to have a SmallBumpPtrAllocator
1029
    /// instead.
1030
    /// FIXME: Now that this only allocates ImplicitConversionSequences, do we
1031
    /// want to un-generalize this?
1032
    template <typename T>
1033
13.8M
    T *slabAllocate(unsigned N) {
1034
      // It's simpler if this doesn't need to consider alignment.
1035
13.8M
      static_assert(alignof(T) == alignof(void *),
1036
13.8M
                    "Only works for pointer-aligned types.");
1037
13.8M
      static_assert(std::is_trivial<T>::value ||
1038
13.8M
                        std::is_same<ImplicitConversionSequence, T>::value,
1039
13.8M
                    "Add destruction logic to OverloadCandidateSet::clear().");
1040
1041
13.8M
      unsigned NBytes = sizeof(T) * N;
1042
13.8M
      if (NBytes > NumInlineBytes - NumInlineBytesUsed)
1043
8.34M
        return SlabAllocator.Allocate<T>(N);
1044
5.46M
      char *FreeSpaceStart = InlineSpace + NumInlineBytesUsed;
1045
5.46M
      assert(uintptr_t(FreeSpaceStart) % alignof(void *) == 0 &&
1046
5.46M
             "Misaligned storage!");
1047
1048
5.46M
      NumInlineBytesUsed += NBytes;
1049
5.46M
      return reinterpret_cast<T *>(FreeSpaceStart);
1050
5.46M
    }
1051
1052
    void destroyCandidates();
1053
1054
  public:
1055
    OverloadCandidateSet(SourceLocation Loc, CandidateSetKind CSK,
1056
                         OperatorRewriteInfo RewriteInfo = {})
1057
16.1M
        : Loc(Loc), Kind(CSK), RewriteInfo(RewriteInfo) {}
1058
    OverloadCandidateSet(const OverloadCandidateSet &) = delete;
1059
    OverloadCandidateSet &operator=(const OverloadCandidateSet &) = delete;
1060
16.1M
    ~OverloadCandidateSet() { destroyCandidates(); }
1061
1062
5.20M
    SourceLocation getLocation() const { return Loc; }
1063
3.41M
    CandidateSetKind getKind() const { return Kind; }
1064
6.11M
    OperatorRewriteInfo getRewriteInfo() const { return RewriteInfo; }
1065
1066
    /// Determine when this overload candidate will be new to the
1067
    /// overload set.
1068
    bool isNewCandidate(Decl *F, OverloadCandidateParamOrder PO =
1069
5.95M
                                     OverloadCandidateParamOrder::Normal) {
1070
5.95M
      uintptr_t Key = reinterpret_cast<uintptr_t>(F->getCanonicalDecl());
1071
5.95M
      Key |= static_cast<uintptr_t>(PO);
1072
5.95M
      return Functions.insert(Key).second;
1073
5.95M
    }
1074
1075
    /// Exclude a function from being considered by overload resolution.
1076
893
    void exclude(Decl *F) {
1077
893
      isNewCandidate(F, OverloadCandidateParamOrder::Normal);
1078
893
      isNewCandidate(F, OverloadCandidateParamOrder::Reversed);
1079
893
    }
1080
1081
    /// Clear out all of the candidates.
1082
    void clear(CandidateSetKind CSK);
1083
1084
    using iterator = SmallVectorImpl<OverloadCandidate>::iterator;
1085
1086
22.3M
    iterator begin() { return Candidates.begin(); }
1087
39.4M
    iterator end() { return Candidates.end(); }
1088
1089
3.39M
    size_t size() const { return Candidates.size(); }
1090
1.21M
    bool empty() const { return Candidates.empty(); }
1091
1092
    /// Allocate storage for conversion sequences for NumConversions
1093
    /// conversions.
1094
    ConversionSequenceList
1095
13.8M
    allocateConversionSequences(unsigned NumConversions) {
1096
13.8M
      ImplicitConversionSequence *Conversions =
1097
13.8M
          slabAllocate<ImplicitConversionSequence>(NumConversions);
1098
1099
      // Construct the new objects.
1100
36.9M
      for (unsigned I = 0; I != NumConversions; 
++I23.1M
)
1101
23.1M
        new (&Conversions[I]) ImplicitConversionSequence();
1102
1103
13.8M
      return ConversionSequenceList(Conversions, NumConversions);
1104
13.8M
    }
1105
1106
    /// Add a new candidate with NumConversions conversion sequence slots
1107
    /// to the overload set.
1108
    OverloadCandidate &addCandidate(unsigned NumConversions = 0,
1109
13.7M
                                    ConversionSequenceList Conversions = None) {
1110
13.7M
      assert((Conversions.empty() || Conversions.size() == NumConversions) &&
1111
13.7M
             "preallocated conversion sequence has wrong length");
1112
1113
13.7M
      Candidates.push_back(OverloadCandidate());
1114
13.7M
      OverloadCandidate &C = Candidates.back();
1115
13.7M
      C.Conversions = Conversions.empty()
1116
13.3M
                          ? allocateConversionSequences(NumConversions)
1117
398k
                          : Conversions;
1118
13.7M
      return C;
1119
13.7M
    }
1120
1121
    /// Find the best viable function on this overload set, if it exists.
1122
    OverloadingResult BestViableFunction(Sema &S, SourceLocation Loc,
1123
                                         OverloadCandidateSet::iterator& Best);
1124
1125
    SmallVector<OverloadCandidate *, 32> CompleteCandidates(
1126
        Sema &S, OverloadCandidateDisplayKind OCD, ArrayRef<Expr *> Args,
1127
        SourceLocation OpLoc = SourceLocation(),
1128
        llvm::function_ref<bool(OverloadCandidate &)> Filter =
1129
864k
            [](OverloadCandidate &) { return true; });
1130
1131
    void NoteCandidates(
1132
        PartialDiagnosticAt PA, Sema &S, OverloadCandidateDisplayKind OCD,
1133
        ArrayRef<Expr *> Args, StringRef Opc = "",
1134
        SourceLocation Loc = SourceLocation(),
1135
        llvm::function_ref<bool(OverloadCandidate &)> Filter =
1136
32.0k
            [](OverloadCandidate &) { return true; });
1137
1138
    void NoteCandidates(Sema &S, ArrayRef<Expr *> Args,
1139
                        ArrayRef<OverloadCandidate *> Cands,
1140
                        StringRef Opc = "",
1141
                        SourceLocation OpLoc = SourceLocation());
1142
1143
1.65M
    LangAS getDestAS() { return DestAS; }
1144
1145
342k
    void setDestAS(LangAS AS) {
1146
342k
      assert((Kind == CSK_InitByConstructor ||
1147
342k
              Kind == CSK_InitByUserDefinedConversion) &&
1148
342k
             "can't set the destination address space when not constructing an "
1149
342k
             "object");
1150
342k
      DestAS = AS;
1151
342k
    }
1152
1153
  };
1154
1155
  bool isBetterOverloadCandidate(Sema &S,
1156
                                 const OverloadCandidate &Cand1,
1157
                                 const OverloadCandidate &Cand2,
1158
                                 SourceLocation Loc,
1159
                                 OverloadCandidateSet::CandidateSetKind Kind);
1160
1161
  struct ConstructorInfo {
1162
    DeclAccessPair FoundDecl;
1163
    CXXConstructorDecl *Constructor;
1164
    FunctionTemplateDecl *ConstructorTmpl;
1165
1166
986k
    explicit operator bool() const { return Constructor; }
1167
  };
1168
1169
  // FIXME: Add an AddOverloadCandidate / AddTemplateOverloadCandidate overload
1170
  // that takes one of these.
1171
2.46M
  inline ConstructorInfo getConstructorInfo(NamedDecl *ND) {
1172
2.46M
    if (isa<UsingDecl>(ND))
1173
1.54k
      return ConstructorInfo{};
1174
1175
    // For constructors, the access check is performed against the underlying
1176
    // declaration, not the found declaration.
1177
2.46M
    auto *D = ND->getUnderlyingDecl();
1178
2.46M
    ConstructorInfo Info = {DeclAccessPair::make(ND, D->getAccess()), nullptr,
1179
2.46M
                            nullptr};
1180
2.46M
    Info.ConstructorTmpl = dyn_cast<FunctionTemplateDecl>(D);
1181
2.46M
    if (Info.ConstructorTmpl)
1182
497k
      D = Info.ConstructorTmpl->getTemplatedDecl();
1183
2.46M
    Info.Constructor = dyn_cast<CXXConstructorDecl>(D);
1184
2.46M
    return Info;
1185
2.46M
  }
1186
1187
} // namespace clang
1188
1189
#endif // LLVM_CLANG_SEMA_OVERLOAD_H