[Interpreter] Add support for parameter variables.

src/heap/heap.cc

 // 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.
 
 #include "src/heap/heap.h"
 
 #include "src/accessors.h"
 #include "src/api.h"
 #include "src/base/bits.h"
 #include "src/base/once.h"
@@ skipping 2900 matching lines @@
 #undef ALLOCATE_MAP
   }
 
   {  // Empty arrays
     {
       ByteArray* byte_array;
       if (!AllocateByteArray(0, TENURED).To(&byte_array)) return false;
       set_empty_byte_array(byte_array);
 
       BytecodeArray* bytecode_array;
-      AllocationResult allocation =
-          AllocateBytecodeArray(0, nullptr, kPointerSize);
+      AllocationResult allocation = AllocateBytecodeArray(0, nullptr, 0, 0);
       if (!allocation.To(&bytecode_array)) {
         return false;
       }
       set_empty_bytecode_array(bytecode_array);
     }
 
 #define ALLOCATE_EMPTY_FIXED_TYPED_ARRAY(Type, type, TYPE, ctype, size) \
   {                                                                     \
     FixedTypedArrayBase* obj;                                           \
     if (!AllocateEmptyFixedTypedArray(kExternal##Type##Array).To(&obj)) \
@@ skipping 578 matching lines @@
   }
 
   result->set_map_no_write_barrier(byte_array_map());
   ByteArray::cast(result)->set_length(length);
   return result;
 }
 
 
 AllocationResult Heap::AllocateBytecodeArray(int length,
                                              const byte* const raw_bytecodes,
-                                             int frame_size) {
+                                             int frame_size,
+                                             int parameter_count) {
   if (length < 0 || length > BytecodeArray::kMaxLength) {
     v8::internal::Heap::FatalProcessOutOfMemory("invalid array length", true);
   }
 
   int size = BytecodeArray::SizeFor(length);
   HeapObject* result;
   {
     AllocationResult allocation = AllocateRaw(size, OLD_SPACE, OLD_SPACE);
     if (!allocation.To(&result)) return allocation;
   }
 
   result->set_map_no_write_barrier(bytecode_array_map());
   BytecodeArray* instance = BytecodeArray::cast(result);
   instance->set_length(length);
   instance->set_frame_size(frame_size);
+  instance->set_parameter_count(parameter_count);
   CopyBytes(instance->GetFirstBytecodeAddress(), raw_bytecodes, length);
 
   return result;
 }
 
 
 void Heap::CreateFillerObjectAt(Address addr, int size) {
   if (size == 0) return;
   HeapObject* filler = HeapObject::FromAddress(addr);
   if (size == kPointerSize) {
@@ skipping 3223 matching lines @@
     *object_type = "CODE_TYPE";                                                \
     *object_sub_type = "CODE_AGE/" #name;                                      \
     return true;
     CODE_AGE_LIST_COMPLETE(COMPARE_AND_RETURN_NAME)
 #undef COMPARE_AND_RETURN_NAME
   }
   return false;
 }
 }  // namespace internal
 }  // namespace v8