Reduce boot-up memory use of V8.

src/deoptimizer.cc

 // Copyright 2011 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 1068 matching lines @@
 
   MacroAssembler masm(Isolate::Current(), NULL, 16 * KB);
   masm.set_emit_debug_code(false);
   GenerateDeoptimizationEntries(&masm, kNumberOfEntries, type);
   CodeDesc desc;
   masm.GetCode(&desc);
   ASSERT(desc.reloc_size == 0);
 
   MemoryChunk* chunk =
       Isolate::Current()->memory_allocator()->AllocateChunk(desc.instr_size,
+                                                            desc.instr_size,
                                                             EXECUTABLE,
                                                             NULL);
   if (chunk == NULL) {
     V8::FatalProcessOutOfMemory("Not enough memory for deoptimization table");
   }
   memcpy(chunk->body(), desc.buffer, desc.instr_size);
   CPU::FlushICache(chunk->body(), desc.instr_size);
   return chunk;
 }
 
@@ skipping 399 matching lines @@
 
 void DeoptimizedFrameInfo::Iterate(ObjectVisitor* v) {
   v->VisitPointer(BitCast<Object**>(&function_));
   v->VisitPointers(parameters_, parameters_ + parameters_count_);
   v->VisitPointers(expression_stack_, expression_stack_ + expression_count_);
 }
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 } }  // namespace v8::internal