On 22/08/2016 23:17, SF Markus Elfring wrote: >> If in doubt, the compiler will be _much_ better at optimizing >> that kind of stuff anyway. > > Which compiler (or optimizer) implementation is capable to restructure > the jump targets for you automatically in the way I propose here? If kfree were implemented as if (p) really_kfree(p); then the compiler would be able to jump over the NULL test. In principle one could also add a "does nothing if NULL" attribute to GCC and annotate kfree with it. Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
