https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114027
--- Comment #9 from Robin Dapp <rdapp at gcc dot gnu.org> ---
Argh, I actually just did a gcc -O3 -march=native pr114027.c
-fno-vect-cost-model on cfarm188 with a recent-ish GCC but realized that I used
my slightly modified version and not the original test case.
long a;
int b[10][8] = {{},
{},
{},
{},
{},
{},
{0, 0, 0, 0, 0, 1, 1},
{1, 1, 1, 1, 1, 1, 1},
{1, 1, 1, 1, 1, 1, 1}};
int c;
int main() {
int d;
c = 0xFFFFFFFF;
for (; a < 6; a++) {
d = 0;
for (; d < 6; d++) {
c ^= -3L;
if (b[a + 3][d])
continue;
c = 0;
}
}
if (c == -3) {
return 0;
} else {
return 1;
}
}
This was from an initial attempt to minimize it further but I didn't really
verify if I'm breaking the test case by that (or causing undefined behavior).
With that I get a "1" with default options and "0" with -fno-tree-vectorize.
Maybe my snippet is broken then?
