2015-01-30 16:52 GMT+03:00 buyitian <buyitian@xxxxxxxxx>: >> > Please check the assembly code to double confirm the GCC behavior. > Why will GCC change the order as what you mentioned? Only assembly code can tell you. It does not change at the moment. I think it can change it. Because from line ret = hdl->count; until line return ret; there is no access to either ret or hdl->count. So it is reasonable to optimizer to think that their values are the same and eliminate unneeded variable. -- With best regards, Matwey V. Kornilov http://blog.matwey.name xmpp://0x2207@xxxxxxxxx _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
