[PATCH] Improve XMM16-31 handling in various *vec_dup* patterns

[Kirill Yukhin]

Hello Jakub,
On 18 May 22:58, Jakub Jelinek wrote:
> Hi!
> 
> These instructions are available in AVX512VL, so we can use
> XMM16+ in there.
> 
> Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?
OK.
> 
> 2016-05-18  Jakub Jelinek  <jakub@redhat.com>
> 
> 	* config/i386/sse.md (avx2_vec_dupv4df): Use v instead of x
> 	constraint, use maybe_evex prefix instead of vex.
> 	(vec_dupv4sf): Use v constraint instead of x for output
> 	operand except for noavx alternative, use Yv constraint
> 	instead of x for input.  Use maybe_evex prefix instead of vex.
> 	(*vec_dupv4si): Likewise.
> 	(*vec_dupv2di): Likewise.
> 
> 	* gcc.target/i386/avx512vl-vbroadcast-1.c: New test.

--
Thanks, K