One Zone per CompilationInfo.

src/objects.cc

 // 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 7448 matching lines @@
   ASSERT(result != Isolate::Current()->has_pending_exception());
   if (!result && flag == CLEAR_EXCEPTION) {
     info->isolate()->clear_pending_exception();
   }
   return result;
 }
 
 
 bool SharedFunctionInfo::CompileLazy(Handle<SharedFunctionInfo> shared,
                                      ClearExceptionFlag flag) {
-  CompilationInfo info(shared);
+
+  Zone zone(shared->GetIsolate());
+  CompilationInfo info(shared, &zone);
+  ZoneScope scope(&zone, DELETE_ON_EXIT);
   return CompileLazyHelper(&info, flag);
 }
 
 
 bool JSFunction::CompileLazy(Handle<JSFunction> function,
                              ClearExceptionFlag flag) {
   bool result = true;
   if (function->shared()->is_compiled()) {
     function->ReplaceCode(function->shared()->code());
     function->shared()->set_code_age(0);
   } else {
-    CompilationInfo info(function);
+    Zone zone(function->GetIsolate());
+    CompilationInfo info(function, &zone);
+    ZoneScope scope(&zone, DELETE_ON_EXIT);
     result = CompileLazyHelper(&info, flag);
     ASSERT(!result || function->is_compiled());
   }
   return result;
 }
 
 
 bool JSFunction::CompileOptimized(Handle<JSFunction> function,
                                   int osr_ast_id,
                                   ClearExceptionFlag flag) {
-  CompilationInfo info(function);
+  Zone zone(function->GetIsolate());
+  CompilationInfo info(function, &zone);
+  ZoneScope scope(&zone, DELETE_ON_EXIT);
   info.SetOptimizing(osr_ast_id);
   return CompileLazyHelper(&info, flag);
 }
 
 
 bool JSFunction::IsInlineable() {
   if (IsBuiltin()) return false;
   SharedFunctionInfo* shared_info = shared();
   // Check that the function has a script associated with it.
   if (!shared_info->script()->IsScript()) return false;
@@ skipping 5702 matching lines @@
   set_year(Smi::FromInt(year), SKIP_WRITE_BARRIER);
   set_month(Smi::FromInt(month), SKIP_WRITE_BARRIER);
   set_day(Smi::FromInt(day), SKIP_WRITE_BARRIER);
   set_weekday(Smi::FromInt(weekday), SKIP_WRITE_BARRIER);
   set_hour(Smi::FromInt(hour), SKIP_WRITE_BARRIER);
   set_min(Smi::FromInt(min), SKIP_WRITE_BARRIER);
   set_sec(Smi::FromInt(sec), SKIP_WRITE_BARRIER);
 }
 
 } }  // namespace v8::internal