https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114121
--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Tried
__attribute__((noipa)) unsigned long
foo (unsigned long x)
{
unsigned long y[128], z = 0, w = 0;
y[127] = x;
__builtin_memset (&y, 0, 127 * sizeof (long));
for (unsigned long i = 0; i < 128; i += 2)
{
unsigned long a = y[i], b, c, d;
b = __builtin_subcl (0, a, z, &c);
z = c;
if (i >= 64)
{
if (i == 64)
w = c != 0;
else
w = (c != 0) | w;
}
d = i + 1;
a = y[d];
b = __builtin_subcl (0, a, z, &c);
z = c;
if (d > 64)
w = (c != 0) | w;
}
return w;
}
but that doesn't reproduce it unfortunately.
