One Zone per CompilationInfo.

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 59 matching lines @@
 // -----------------------------------------------------------------------------
 // Full code generator.
 
 class FullCodeGenerator: public AstVisitor {
  public:
   enum State {
     NO_REGISTERS,
     TOS_REG
   };
 
-  FullCodeGenerator(MacroAssembler* masm, CompilationInfo* info,
-                    Zone* zone)
+  FullCodeGenerator(MacroAssembler* masm, CompilationInfo* info)
       : masm_(masm),
         info_(info),
         scope_(info->scope()),
         nesting_stack_(NULL),
         loop_depth_(0),
         globals_(NULL),
         context_(NULL),
         bailout_entries_(info->HasDeoptimizationSupport()
-                         ? info->function()->ast_node_count() : 0, zone),
-        stack_checks_(2, zone),  // There's always at least one.
+                         ? info->function()->ast_node_count() : 0,
+                         info->zone()),
+        stack_checks_(2, info->zone()),  // There's always at least one.
         type_feedback_cells_(info->HasDeoptimizationSupport()
-                             ? info->function()->ast_node_count() : 0, zone),
+                             ? info->function()->ast_node_count() : 0,
+                             info->zone()),
         ic_total_count_(0),
-        zone_(zone) { }
+        zone_(info->zone()) { }
 
   static bool MakeCode(CompilationInfo* info);
 
   // Encode state and pc-offset as a BitField<type, start, size>.
   // Only use 30 bits because we encode the result as a smi.
   class StateField : public BitField<State, 0, 1> { };
   class PcField    : public BitField<unsigned, 1, 30-1> { };
 
   static const char* State2String(State state) {
     switch (state) {
@@ skipping 710 matching lines @@
   }
 
  private:
   Zone* zone_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_FULL_CODEGEN_H_