Generate specialized constructor code for constructing simple objects

src/ia32/builtins-ia32.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 114 matching lines @@
     __ j(equal, &rt_call);
 
     // Now allocate the JSObject on the heap.
     // edi: constructor
     // eax: initial map
     __ movzx_b(edi, FieldOperand(eax, Map::kInstanceSizeOffset));
     __ shl(edi, kPointerSizeLog2);
     // Make sure that the maximum heap object size will never cause us
     // problem here, because it is always greater than the maximum
     // instance size that can be represented in a byte.
-    ASSERT(Heap::MaxObjectSizeInPagedSpace() >= (1 << kBitsPerByte));
+    ASSERT(Heap::MaxObjectSizeInPagedSpace() >= JSObject::kMaxInstanceSize);
     ExternalReference new_space_allocation_top =
         ExternalReference::new_space_allocation_top_address();
     __ mov(ebx, Operand::StaticVariable(new_space_allocation_top));
     __ add(edi, Operand(ebx));  // Calculate new top
     ExternalReference new_space_allocation_limit =
         ExternalReference::new_space_allocation_limit_address();
     __ cmp(edi, Operand::StaticVariable(new_space_allocation_limit));
     __ j(above_equal, &rt_call);
     // Allocated the JSObject, now initialize the fields.
     // eax: initial map
@@ skipping 628 matching lines @@
   // Dont adapt arguments.
   // -------------------------------------------
   __ bind(&dont_adapt_arguments);
   __ jmp(Operand(edx));
 }
 
 
 #undef __
 
 } }  // namespace v8::internal