https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85551
--- Comment #2 from Allan Jensen ---
Hmm.. I appear to have made unsafe assumptions in the mod_opt cases.
The first safe optimization version would then be:
void mod_opt(int *a, int count, int stride, unsigned width)
{
int pos_opt = 0;
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85551
--- Comment #1 from Allan Jensen ---
I also stumbled on this old motivating article when I tried googling the
concept: http://publications.csail.mit.edu/lcs/pubs/pdf/MIT-LCS-TM-600.pdf
