https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106315
--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
Here is the testcase:
---
void
bar(int *indices, int max_iter, int *actual_indices,
int *iters_per_dim, int N_dims)
{
int iter = 0;
int sum_indices = 0;
int flag, k;
while (iter < max_iter) {
for (k = N_dims - 1; k > 0; k--) {
sum_indices += actual_indices[k];
}
if (sum_indices >= max_iter) {
return;
}
iter++;
for (k = 0; k < N_dims; k++) {
if (indices[k] < iters_per_dim[k] - 1) {
indices[k]++;
break;
}
}
}
}
---
The second loop is unrolled after the commit.
