[heap] Remove unnecessary marking specializations

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 <memory>
 
@@ skipping 4840 matching lines @@
   static const int kParameterSizeOffset = kFrameSizeOffset + kIntSize;
   static const int kInterruptBudgetOffset = kParameterSizeOffset + kIntSize;
   static const int kOSRNestingLevelOffset = kInterruptBudgetOffset + kIntSize;
   static const int kHeaderSize = kOSRNestingLevelOffset + kCharSize;
 
   // Maximal memory consumption for a single BytecodeArray.
   static const int kMaxSize = 512 * MB;
   // Maximal length of a single BytecodeArray.
   static const int kMaxLength = kMaxSize - kHeaderSize;
 
+  static const int kPointerFieldsBeginOffset = kConstantPoolOffset;
+  static const int kPointerFieldsEndOffset = kFrameSizeOffset;
+
+  typedef FixedBodyDescriptor<kPointerFieldsBeginOffset,
+                              kPointerFieldsEndOffset, kHeaderSize>
+      MarkingBodyDescriptor;
+
   class BodyDescriptor;
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(BytecodeArray);
 };
 
 
 // FreeSpace are fixed-size free memory blocks used by the heap and GC.
 // They look like heap objects (are heap object tagged and have a map) so that
 // the heap remains iterable.  They have a size and a next pointer.
@@ skipping 4039 matching lines @@
   static const int kDependentCodeOffset =
       kPretenureCreateCountOffset + kPointerSize;
   static const int kWeakNextOffset = kDependentCodeOffset + kPointerSize;
   static const int kSize = kWeakNextOffset + kPointerSize;
 
   // During mark compact we need to take special care for the dependent code
   // field.
   static const int kPointerFieldsBeginOffset = kTransitionInfoOffset;
   static const int kPointerFieldsEndOffset = kWeakNextOffset;
 
+  typedef FixedBodyDescriptor<kPointerFieldsBeginOffset,
+                              kPointerFieldsEndOffset, kSize>
+      MarkingBodyDescriptor;
+
   // For other visitors, use the fixed body descriptor below.
   typedef FixedBodyDescriptor<HeapObject::kHeaderSize, kSize, kSize>
       BodyDescriptor;
 
  private:
   inline bool PretenuringDecisionMade();
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(AllocationSite);
 };
 
@@ skipping 1230 matching lines @@
   // Dispatched behavior.
   DECLARE_PRINTER(PropertyCell)
   DECLARE_VERIFIER(PropertyCell)
 
   // Layout description.
   static const int kDetailsOffset = HeapObject::kHeaderSize;
   static const int kValueOffset = kDetailsOffset + kPointerSize;
   static const int kDependentCodeOffset = kValueOffset + kPointerSize;
   static const int kSize = kDependentCodeOffset + kPointerSize;
 
-  static const int kPointerFieldsBeginOffset = kValueOffset;
-  static const int kPointerFieldsEndOffset = kSize;
-
   typedef FixedBodyDescriptor<kValueOffset,
                               kSize,
                               kSize> BodyDescriptor;
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PropertyCell);
 };
 
 
 class WeakCell : public HeapObject {
@@ skipping 1243 matching lines @@
     }
     return value;
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #endif  // V8_OBJECTS_H_