On Mon, Mar 24, 2014 at 9:09 AM, Jakub Jelinek <ja...@redhat.com> wrote:
> The following is recognized well:
>
> typedef char v32qi __attribute__((vector_size (32)));
> v32qi foo (char a)
> {
> return (v32qi) { a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a,
> a, a, a, a, a, a, a, a, a, a, a, a, a };
> }
Perhaps "well" but not optimal. The created code is
vmovd %edi, %xmm0
vpbroadcastb %xmm0, %xmm0
vinserti128 $1, %xmm0, %ymm0, %ymm0
It should generate for AVX2
vmovd %edi, %xmm0
vpbroadcastb %xmm0, %ymm0
