3 ms·
ANDN is fast. The issue looks specific to shift counts. SHL is also slow.
by tavianator 2y ago
ANDN 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