* update membar pass when data is double buffered * Add instruction prefetch_s * prefetch tests pass (except the 1 warp case) * Fix the 1-warp bug * Add back prefetch files * Disable prefetch on a100 * Always add war barrier on sm>=80
* update membar pass when data is double buffered * Add instruction prefetch_s * prefetch tests pass (except the 1 warp case) * Fix the 1-warp bug * Add back prefetch files * Disable prefetch on a100 * Always add war barrier on sm>=80