Support for typed arrays added to Heap::RightTrimFixedArray().

src/objects-inl.h

 // Copyright 2012 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.
 //
 // Review notes:
 //
 // - The use of macros in these inline functions may seem superfluous
 // but it is absolutely needed to make sure gcc generates optimal
 // code. gcc is not happy when attempting to inline too deep.
 //
@@ skipping 4207 matching lines @@
   double* ptr = static_cast<double*>(external_pointer());
   ptr[index] = value;
 }
 
 
 void* FixedTypedArrayBase::DataPtr() {
   return FIELD_ADDR(this, kDataOffset);
 }
 
 
-int FixedTypedArrayBase::DataSize(InstanceType type) {
+int FixedTypedArrayBase::ElementSize(InstanceType type) {
   int element_size;
   switch (type) {
 #define TYPED_ARRAY_CASE(Type, type, TYPE, ctype, size)                       \
     case FIXED_##TYPE##_ARRAY_TYPE:                                           \
       element_size = size;                                                    \
       break;
 
     TYPED_ARRAYS(TYPED_ARRAY_CASE)
 #undef TYPED_ARRAY_CASE
     default:
       UNREACHABLE();
       return 0;
   }
-  return length() * element_size;
+  return element_size;
 }
 
 
+int FixedTypedArrayBase::DataSize(InstanceType type) {
+  return length() * ElementSize(type);
+}
+
+
 int FixedTypedArrayBase::DataSize() {
   return DataSize(map()->instance_type());
 }
 
 
 int FixedTypedArrayBase::size() {
   return OBJECT_POINTER_ALIGN(kDataOffset + DataSize());
 }
 
 
 int FixedTypedArrayBase::TypedArraySize(InstanceType type) {
   return OBJECT_POINTER_ALIGN(kDataOffset + DataSize(type));
 }
 
 
+int FixedTypedArrayBase::TypedArraySize(InstanceType type, int length) {
+  return OBJECT_POINTER_ALIGN(kDataOffset + length * ElementSize(type));
+}
+
+
 uint8_t Uint8ArrayTraits::defaultValue() { return 0; }
 
 
 uint8_t Uint8ClampedArrayTraits::defaultValue() { return 0; }
 
 
 int8_t Int8ArrayTraits::defaultValue() { return 0; }
 
 
 uint16_t Uint16ArrayTraits::defaultValue() { return 0; }
@@ skipping 3247 matching lines @@
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_