ExtendStorageStub added, it is aimed for extending objects backing store when it runs out of space.

src/ic/x87/handler-compiler-x87.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/v8.h"
 
 #if V8_TARGET_ARCH_X87
 
 #include "src/ic/call-optimization.h"
 #include "src/ic/handler-compiler.h"
@@ skipping 374 matching lines @@
     __ fstp_d(FieldOperand(storage_reg, HeapNumber::kValueOffset));
   }
 
   // Stub never generated for objects that require access checks.
   DCHECK(!transition->is_access_check_needed());
 
   // Perform map transition for the receiver if necessary.
   if (details.type() == FIELD &&
       Map::cast(transition->GetBackPointer())->unused_property_fields() == 0) {
     // The properties must be extended before we can store the value.
-    // We jump to a runtime call that extends the properties array.
-    __ pop(scratch1);  // Return address.
-    __ push(receiver_reg);
-    __ push(Immediate(transition));
-    __ push(value_reg);
-    __ push(scratch1);
-    __ TailCallExternalReference(
-        ExternalReference(IC_Utility(IC::kSharedStoreIC_ExtendStorage),
-                          isolate()),
-        3, 1);
+    __ mov(ExtendStorageDescriptor::MapRegister(), Immediate(transition));
+
+    ExtendStorageStub stub(isolate(),
+                           FieldIndex::ForDescriptor(*transition, descriptor),
+                           representation);
+    GenerateTailCall(masm(), stub.GetCode());
     return;
   }
 
   // Update the map of the object.
   __ mov(scratch1, Immediate(transition));
   __ mov(FieldOperand(receiver_reg, HeapObject::kMapOffset), scratch1);
 
   // Update the write barrier for the map field.
   __ RecordWriteField(receiver_reg, HeapObject::kMapOffset, scratch1, scratch2,
                       kDontSaveFPRegs, OMIT_REMEMBERED_SET, OMIT_SMI_CHECK);
@@ skipping 431 matching lines @@
   // Return the generated code.
   return GetCode(kind(), Code::NORMAL, name);
 }
 
 
 #undef __
 }
 }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X87