[FFmpeg-devel] [PATCH 7/8] lavc/flacenc: add AVX2 version of the 32-bit LPC encoder

[Henrik Gramner]

On Sun, Nov 26, 2017 at 11:51 PM, James Darnley <james.darnley at gmail.com> wrote:
> -pd_0_int_min: times  2 dd 0, -2147483648
> -pq_int_min:   times  2 dq -2147483648
> -pq_int_max:   times  2 dq  2147483647
> +pd_0_int_min: times  4 dd 0, -2147483648
> +pq_int_min:   times  4 dq -2147483648
> +pq_int_max:   times  4 dq  2147483647

Using 128-bit broadcasts is preferable over duplicating the constants
to 256-bit unless there's a good reason for doing so since it wastes
less cache and is faster on AMD CPU:s.