3 ms·
Does this also occur with other 3-argument instructions like ANDN?
by BeeOnRope 2y ago
Does this also occur with other 3-argument instructions like ANDN?
- tavianator 2y agoANDN is fast. The issue looks specific to shift counts. SHL is also slow.
- Bulat_Ziganshin 2y agowhat about 8-bit ANDN? SHL essentially uses CL, so it may be because 8-bit subregister of "constant register" isn't present on the bypass network