On Tue, Apr 29, 2014 at 6:50 AM, Evgeny Stupachenko <evstu...@gmail.com> wrote:
> Hi,
>
> The patch adds use of palignr instruction, when we have one operand
> permutation like:
> {5 6 7 0 1 2 3 4}:
>
> Treating this as {5 6 7 8 9 a b c} on 2 operands, and therefore palignr on 5.
>
> Bootstrap and make check passed.
>
> Is it ok?
>
> Evgeny
>
> 2014-04-29 Evgeny Stupachenko <evstu...@gmail.com>
>
> * config/i386/i386.c (expand_vec_perm_palignr_one_operand): New.
> Enables PALIGNR on one operand permutation.
> * config/i386/i386.c (expand_vec_perm_1): Try PALIGNR on one operand.
>
>
I think it is better to include some testcases in this
patch so that the backend change and its testcases
are self-contained.
Thanks.
--
H.J.
