[Interpreter] Add BytecodeArray class and add to SharedFunctionInfo.

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index 6b1cfb3c330f1d22c31793d0b4b807d2f0b537e4..0e065bb8846b35de1a11da0cc457f4869fd01396 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -648,6 +648,7 @@ bool Object::IsNumber() const {
 
 
 TYPE_CHECKER(ByteArray, BYTE_ARRAY_TYPE)
+TYPE_CHECKER(BytecodeArray, BYTECODE_ARRAY_TYPE)
 TYPE_CHECKER(FreeSpace, FREE_SPACE_TYPE)
 
 
@@ -2950,6 +2951,7 @@ void SeededNumberDictionary::set_requires_slow_elements() {
 CAST_ACCESSOR(AccessorInfo)
 CAST_ACCESSOR(ArrayList)
 CAST_ACCESSOR(ByteArray)
+CAST_ACCESSOR(BytecodeArray)
 CAST_ACCESSOR(Cell)
 CAST_ACCESSOR(Code)
 CAST_ACCESSOR(CodeCacheHashTable)
@@ -3651,6 +3653,15 @@ Address ByteArray::GetDataStartAddress() {
 }
 
 
+SMI_ACCESSORS(BytecodeArray, frame_size, kFrameSizeOffset);
+SMI_ACCESSORS(BytecodeArray, number_of_locals, kNumberOfLocalsOffset);
+
+
+Address BytecodeArray::GetFirstBytecodeAddress() {
+  return reinterpret_cast<Address>(this) - kHeapObjectTag + kHeaderSize;
+}
+
+
 uint8_t* ExternalUint8ClampedArray::external_uint8_clamped_pointer() {
   return reinterpret_cast<uint8_t*>(external_pointer());
 }
@@ -4126,6 +4137,9 @@ int HeapObject::SizeFromMap(Map* map) {
   if (instance_type == BYTE_ARRAY_TYPE) {
     return reinterpret_cast<ByteArray*>(this)->ByteArraySize();
   }
+  if (instance_type == BYTECODE_ARRAY_TYPE) {
+    return reinterpret_cast<BytecodeArray*>(this)->BytecodeArraySize();
+  }
   if (instance_type == FREE_SPACE_TYPE) {
     return reinterpret_cast<FreeSpace*>(this)->nobarrier_size();
   }
@@ -5190,6 +5204,8 @@ ACCESSORS(SharedFunctionInfo, optimized_code_map, Object,
 ACCESSORS(SharedFunctionInfo, construct_stub, Code, kConstructStubOffset)
 ACCESSORS(SharedFunctionInfo, feedback_vector, TypeFeedbackVector,
           kFeedbackVectorOffset)
+ACCESSORS(SharedFunctionInfo, bytecode_array, BytecodeArray,
+          kBytecodeArrayOffset)
 #if TRACE_MAPS
 SMI_ACCESSORS(SharedFunctionInfo, unique_id, kUniqueIdOffset)
 #endif