Removed the delete calls to ZoneObjects.

src/ia32/codegen-ia32.cc

 // Copyright 2006-2009 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 2165 matching lines @@
   for (int i = 0, entry_pos = table_start.pos();
        i < range;
        i++, entry_pos += sizeof(uint32_t)) {
     if (case_targets[i] == NULL) {
       __ WriteInternalReference(entry_pos,
                                 *node->break_target()->entry_label());
     } else {
       __ WriteInternalReference(entry_pos, *case_targets[i]);
     }
   }
-
-  delete start_frame;
 }
 
 
 void CodeGenerator::VisitSwitchStatement(SwitchStatement* node) {
   ASSERT(!in_spilled_code());
   Comment cmnt(masm_, "[ SwitchStatement");
   CodeForStatementPosition(node);
   node->break_target()->Initialize(this);
 
   // Compile the switch value.
@@ skipping 773 matching lines @@
       frame_->Drop(StackHandlerConstants::kSize / kPointerSize - 1);
       // next_sp popped.
 
       if (i == kReturnShadowIndex) {
         if (!function_return_is_shadowed_) frame_->PrepareForReturn();
         shadows[i]->other_target()->Jump(&return_value);
       } else {
         shadows[i]->other_target()->Jump();
       }
     }
-    delete shadows[i];
   }
 
   exit.Bind();
 }
 
 
 void CodeGenerator::VisitTryFinally(TryFinally* node) {
   ASSERT(!in_spilled_code());
   VirtualFrame::SpilledScope spilled_scope(this);
   Comment cmnt(masm_, "[ TryFinally");
@@ skipping 160 matching lines @@
           JumpTarget skip(this);
           skip.Branch(not_equal);
           frame_->PrepareForReturn();
           original->Jump(&return_value);
           skip.Bind();
         }
       } else {
         original->Branch(equal);
       }
     }
-    delete shadows[i];
   }
 
   if (has_valid_frame()) {
     // Check if we need to rethrow the exception.
     JumpTarget exit(this);
     __ cmp(Operand(ecx), Immediate(Smi::FromInt(THROWING)));
     exit.Branch(not_equal);
 
     // Rethrow exception.
     frame_->EmitPush(eax);  // undo pop from above
@@ skipping 4069 matching lines @@
 
   // Slow-case: Go through the JavaScript implementation.
   __ bind(&slow);
   __ InvokeBuiltin(Builtins::INSTANCE_OF, JUMP_FUNCTION);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal