Refactor code generation for global declarations.

src/full-codegen.h

 // Copyright 2012 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 65 matching lines @@
     NO_REGISTERS,
     TOS_REG
   };
 
   FullCodeGenerator(MacroAssembler* masm, CompilationInfo* info)
       : masm_(masm),
         info_(info),
         scope_(info->scope()),
         nesting_stack_(NULL),
         loop_depth_(0),
-        global_count_(0),
+        globals_(10),
         context_(NULL),
         bailout_entries_(info->HasDeoptimizationSupport()
                          ? info->function()->ast_node_count() : 0),
         stack_checks_(2),  // There's always at least one.
         type_feedback_cells_(info->HasDeoptimizationSupport()
                              ? info->function()->ast_node_count() : 0),
         ic_total_count_(0),
         has_self_optimization_header_(false) { }
 
   static bool MakeCode(CompilationInfo* info);
@@ skipping 677 matching lines @@
                              Label** fall_through) const;
     virtual bool IsEffect() const { return true; }
   };
 
   MacroAssembler* masm_;
   CompilationInfo* info_;
   Scope* scope_;
   Label return_label_;
   NestedStatement* nesting_stack_;
   int loop_depth_;
-  int global_count_;
+  ZoneList<Handle<Object> > globals_;
   const ExpressionContext* context_;
   ZoneList<BailoutEntry> bailout_entries_;
   ZoneList<BailoutEntry> stack_checks_;
   ZoneList<TypeFeedbackCellEntry> type_feedback_cells_;
   int ic_total_count_;
   bool has_self_optimization_header_;
   Handle<FixedArray> handler_table_;
   Handle<JSGlobalPropertyCell> profiling_counter_;
 
   friend class NestedStatement;
 
   DISALLOW_COPY_AND_ASSIGN(FullCodeGenerator);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_FULL_CODEGEN_H_