https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81907
--- Comment #15 from dongkyun.s at samsung dot com --- > There's nothing in the compiler that explicitly says: use memset for these > cores and not for others. The choice will be down to available instructions > and their relative costs. Agreed, but, I'm just wondering why it has diffrent behavior according by GCC version with -Os. (It should be same result if the choice is made by their instructions and costs)
