3 ms·
> 8-wide designs, but can only fetch+decode and retire 4 instructions per cycle That's where the Trace Cache helps in tight loops.
by kbwt 10y ago
> 8-wide designs, but can only fetch+decode and retire 4 instructions per cycle
That's where the Trace Cache helps in tight loops.
- dom0 10y agoThe µop cache (trace cache went out the window) doesn't help with fetching instructions AIUI, but accelerates decoding them. So the 4 insns/cycle fetch bandwidth is not changed by that.