[Bug middle-end/86680] possible gcc optimization

[florian.laroche at googlemail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86680

--- Comment #9 from Florian La Roche <florian.laroche at googlemail dot com> ---
Puh, even introduced an error here. This one works, but is
getting complex compared to the original code:



extern unsigned long __bss_start[];
extern unsigned long __bss_end[];

void clear_bss(void)
{
    unsigned long *bss = __bss_start;
    unsigned long i, end = (__bss_end - __bss_start) * sizeof (unsigned long);
    for (i = 0; i < end; i += sizeof (unsigned long))
        *bss++ = 0UL;
}


best regards,

Florian La Roche