ср, 22 янв. 2025 г. в 23:53, Georg-Johann Lay :
>
> As it turns out, logical 32-bit shifts with an offset of 25..30 can
> be performed in 7 instructions or less. This beats the 7 instruc-
> tions required for the default code of a shift loop.
> Plus, with zero overhead, these cases can be 3-operan
As it turns out, logical 32-bit shifts with an offset of 25..30 can
be performed in 7 instructions or less. This beats the 7 instruc-
tions required for the default code of a shift loop.
Plus, with zero overhead, these cases can be 3-operand.
This is only relevant for -Oz because with -Os, 3op s
