Correctly format builtin constructors in stack traces

src/objects.h

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 
 #include "src/assert-scope.h"
@@ skipping 5045 matching lines @@
   // [is_turbofanned]: For kind STUB or OPTIMIZED_FUNCTION, tells whether the
   // code object was generated by the TurboFan optimizing compiler.
   inline bool is_turbofanned();
   inline void set_is_turbofanned(bool value);
 
   // [can_have_weak_objects]: For kind OPTIMIZED_FUNCTION, tells whether the
   // embedded objects in code should be treated weakly.
   inline bool can_have_weak_objects();
   inline void set_can_have_weak_objects(bool value);
 
+  // [is_construct_stub]: For kind BUILTIN, tells whether the code object
+  // represents a hand-written construct stub
+  // (e.g., NumberConstructor_ConstructStub).
+  inline bool is_construct_stub();
+  inline void set_is_construct_stub(bool value);
+
   // [has_deoptimization_support]: For FUNCTION kind, tells if it has
   // deoptimization support.
   inline bool has_deoptimization_support();
   inline void set_has_deoptimization_support(bool value);
 
   // [has_debug_break_slots]: For FUNCTION kind, tells if it has
   // been compiled with debug break slots.
   inline bool has_debug_break_slots();
   inline void set_has_debug_break_slots(bool value);
 
@@ skipping 315 matching lines @@
                                             PlatformSmiTagging::kSmiValueSize -
                                                 KindField::kNext + 1> {};
 
   // KindSpecificFlags1 layout (STUB, BUILTIN and OPTIMIZED_FUNCTION)
   static const int kStackSlotsFirstBit = 0;
   static const int kStackSlotsBitCount = 24;
   static const int kMarkedForDeoptimizationBit =
       kStackSlotsFirstBit + kStackSlotsBitCount;
   static const int kIsTurbofannedBit = kMarkedForDeoptimizationBit + 1;
   static const int kCanHaveWeakObjects = kIsTurbofannedBit + 1;
+  // Could be moved to overlap previous bits when we need more space.
+  static const int kIsConstructStub = kCanHaveWeakObjects + 1;
 
   STATIC_ASSERT(kStackSlotsFirstBit + kStackSlotsBitCount <= 32);
-  STATIC_ASSERT(kCanHaveWeakObjects + 1 <= 32);
+  STATIC_ASSERT(kIsConstructStub + 1 <= 32);
 
   class StackSlotsField: public BitField<int,
       kStackSlotsFirstBit, kStackSlotsBitCount> {};  // NOLINT
   class MarkedForDeoptimizationField
       : public BitField<bool, kMarkedForDeoptimizationBit, 1> {};  // NOLINT
   class IsTurbofannedField : public BitField<bool, kIsTurbofannedBit, 1> {
   };  // NOLINT
   class CanHaveWeakObjectsField
       : public BitField<bool, kCanHaveWeakObjects, 1> {};  // NOLINT
+  class IsConstructStubField : public BitField<bool, kIsConstructStub, 1> {
+  };  // NOLINT
 
   // KindSpecificFlags2 layout (ALL)
   static const int kIsCrankshaftedBit = 0;
   class IsCrankshaftedField: public BitField<bool,
       kIsCrankshaftedBit, 1> {};  // NOLINT
 
   // KindSpecificFlags2 layout (STUB and OPTIMIZED_FUNCTION)
   static const int kSafepointTableOffsetFirstBit = kIsCrankshaftedBit + 1;
   static const int kSafepointTableOffsetBitCount = 30;
 
@@ skipping 1448 matching lines @@
       FixedArray::kHeaderSize + kPointerSize * (kLiteralsOffset - kEntryLength);
   static const int kOffsetToPreviousOsrAstId =
       FixedArray::kHeaderSize + kPointerSize * (kOsrAstIdOffset - kEntryLength);
 
   // [scope_info]: Scope info.
   DECL_ACCESSORS(scope_info, ScopeInfo)
 
   // [construct stub]: Code stub for constructing instances of this function.
   DECL_ACCESSORS(construct_stub, Code)
 
+  // Sets the given code as the construct stub, and marks builtin code objects
+  // as a construct stub.
+  void SetConstructStub(Code* code);
+
   // Returns if this function has been compiled to native code yet.
   inline bool is_compiled();
 
   // [length]: The function length - usually the number of declared parameters.
   // Use up to 2^30 parameters.
   inline int length() const;
   inline void set_length(int value);
 
   // [internal formal parameter count]: The declared number of parameters.
   // For subclass constructors, also includes new.target.
@@ skipping 4074 matching lines @@
     }
     return value;
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #endif  // V8_OBJECTS_H_