4 ms·
Yes and no. Look at some of the loop optimisations possible on ARM compared to x86-64. I've had x86-64 run 8 instructions that ARM does in 1 instruction.
by hughrr 4y ago
Yes and no. Look at some of the loop optimisations possible on ARM compared to x86-64. I've had x86-64 run 8 instructions that ARM does in 1 instruction.
- saagarjha 4y agoThis applies equally well, or dare I saw even better, on x86. (Arm tends to catch up because of higher IPC.)
- astrange 4y agoI remember PPC and its rlwinms and co. My ARM isn’t that good, though I can read it. But some of those x86 instructions take 0.5 cycles and some of them take 0 if they’re removed by fusion or register renaming. It has worse problems, like loop instructions you can’t actually use but take up the shortest codes.