[Interpreter] Add BytecodeArray class and add to SharedFunctionInfo.

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 630 matching lines @@
   uint32_t seed_;
 };
 
 
 bool Object::IsNumber() const {
   return IsSmi() || IsHeapNumber();
 }
 
 
 TYPE_CHECKER(ByteArray, BYTE_ARRAY_TYPE)
+TYPE_CHECKER(BytecodeArray, BYTECODE_ARRAY_TYPE)
 TYPE_CHECKER(FreeSpace, FREE_SPACE_TYPE)
 
 
 bool Object::IsFiller() const {
   if (!Object::IsHeapObject()) return false;
   InstanceType instance_type = HeapObject::cast(this)->map()->instance_type();
   return instance_type == FREE_SPACE_TYPE || instance_type == FILLER_TYPE;
 }
 
 
@@ skipping 2282 matching lines @@
 }
 
 
 // ------------------------------------
 // Cast operations
 
 
 CAST_ACCESSOR(AccessorInfo)
 CAST_ACCESSOR(ArrayList)
 CAST_ACCESSOR(ByteArray)
+CAST_ACCESSOR(BytecodeArray)
 CAST_ACCESSOR(Cell)
 CAST_ACCESSOR(Code)
 CAST_ACCESSOR(CodeCacheHashTable)
 CAST_ACCESSOR(CompilationCacheTable)
 CAST_ACCESSOR(ConsString)
 CAST_ACCESSOR(DeoptimizationInputData)
 CAST_ACCESSOR(DeoptimizationOutputData)
 CAST_ACCESSOR(DependentCode)
 CAST_ACCESSOR(DescriptorArray)
 CAST_ACCESSOR(ExternalArray)
@@ skipping 681 matching lines @@
   DCHECK_TAG_ALIGNED(address);
   return reinterpret_cast<ByteArray*>(address - kHeaderSize + kHeapObjectTag);
 }
 
 
 Address ByteArray::GetDataStartAddress() {
   return reinterpret_cast<Address>(this) - kHeapObjectTag + kHeaderSize;
 }
 
 
+int BytecodeArray::frame_size() {
+  return READ_INT_FIELD(this, kFrameSizeOffset);

[rmcilroy, 2015/07/20 11:39:46]

These should be stored as SMI values. Could you just use the SMI_ACCESSORS
macro?

[oth, 2015/07/20 13:47:30]

Done.

+}
+
+
+void BytecodeArray::set_frame_size(int value) {
+  WRITE_INT_FIELD(this, kFrameSizeOffset, value);
+}
+
+
+int BytecodeArray::number_of_locals() {
+  return READ_INT_FIELD(this, kNumberOfLocalsOffset);
+}
+
+
+void BytecodeArray::set_number_of_locals(int value) {
+  WRITE_INT_FIELD(this, kNumberOfLocalsOffset, value);
+}
+
+
+Address BytecodeArray::GetFirstBytecodeAddress() {
+  return reinterpret_cast<Address>(this) - kHeapObjectTag + kHeaderSize;
+}
+
+
 uint8_t* ExternalUint8ClampedArray::external_uint8_clamped_pointer() {
   return reinterpret_cast<uint8_t*>(external_pointer());
 }
 
 
 uint8_t ExternalUint8ClampedArray::get_scalar(int index) {
   DCHECK((index >= 0) && (index < this->length()));
   uint8_t* ptr = external_uint8_clamped_pointer();
   return ptr[index];
 }
@@ skipping 455 matching lines @@
   if (instance_type == ONE_BYTE_STRING_TYPE ||
       instance_type == ONE_BYTE_INTERNALIZED_STRING_TYPE) {
     // Strings may get concurrently truncated, hence we have to access its
     // length synchronized.
     return SeqOneByteString::SizeFor(
         reinterpret_cast<SeqOneByteString*>(this)->synchronized_length());
   }
   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();
   }
   if (instance_type == STRING_TYPE ||
       instance_type == INTERNALIZED_STRING_TYPE) {
     // Strings may get concurrently truncated, hence we have to access its
     // length synchronized.
     return SeqTwoByteString::SizeFor(
         reinterpret_cast<SeqTwoByteString*>(this)->synchronized_length());
   }
@@ skipping 1044 matching lines @@
 ACCESSORS_TO_SMI(BreakPointInfo, source_position, kSourcePositionIndex)
 ACCESSORS_TO_SMI(BreakPointInfo, statement_position, kStatementPositionIndex)
 ACCESSORS(BreakPointInfo, break_point_objects, Object, kBreakPointObjectsIndex)
 
 ACCESSORS(SharedFunctionInfo, name, Object, kNameOffset)
 ACCESSORS(SharedFunctionInfo, optimized_code_map, Object,
                  kOptimizedCodeMapOffset)
 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
 ACCESSORS(SharedFunctionInfo, instance_class_name, Object,
           kInstanceClassNameOffset)
 ACCESSORS(SharedFunctionInfo, function_data, Object, kFunctionDataOffset)
 ACCESSORS(SharedFunctionInfo, script, Object, kScriptOffset)
 ACCESSORS(SharedFunctionInfo, debug_info, Object, kDebugInfoOffset)
 ACCESSORS(SharedFunctionInfo, inferred_name, String, kInferredNameOffset)
 
@@ skipping 2111 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_