[Bug lto/105727] __builtin_constant_p expansion in LTO

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105727

--- Comment #9 from Martin Liška <marxin at gcc dot gnu.org> ---
> Sure, we might not inline or ipa cp/vrp all of them...

That's the explanation as 

bool kasan_check_range(unsigned long addr, size_t size, bool write,
                                        unsigned long ret_ip)
{
        return check_region_inline(addr, size, write, ret_ip);
}

lives in mm/kasan/generic.c and so one needs LTO in other to propagate to this
call.