CallICStub with a "never patch" approach until customization.

src/spaces.cc

 // Copyright 2011 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 "v8.h"
 
 #include "full-codegen.h"
 #include "macro-assembler.h"
 #include "mark-compact.h"
 #include "msan.h"
@@ skipping 1039 matching lines @@
     case PROPERTY_CELL_SPACE:
       size = 8 * kPointerSize * KB;
       break;
     case CODE_SPACE:
       if (heap()->isolate()->code_range()->exists()) {
         // When code range exists, code pages are allocated in a special way
         // (from the reserved code range). That part of the code is not yet
         // upgraded to handle small pages.
         size = AreaSize();
       } else {
-        size = 480 * KB * FullCodeGenerator::kBootCodeSizeMultiplier / 100;
+        size = RoundUp(
+            480 * KB * FullCodeGenerator::kBootCodeSizeMultiplier / 100,
+            kPointerSize);
       }
       break;
     default:
       UNREACHABLE();
   }
   return Min(size, AreaSize());
 }
 
 
 int PagedSpace::CountTotalPages() {
@@ skipping 2038 matching lines @@
     object->ShortPrint();
     PrintF("\n");
   }
   printf(" --------------------------------------\n");
   printf(" Marked: %x, LiveCount: %x\n", mark_size, LiveBytes());
 }
 
 #endif  // DEBUG
 
 } }  // namespace v8::internal