PATH: Simplify SSE intrinsics with 3 args

[Uros Bizjak]

Hello!

> 2008-04-01  H.J. Lu  <hongjiu.lu@intel.com>
>
> 	* config/i386/i386.c (bdesc_sse_3arg): Add __builtin_ia32_shufps
> 	and __builtin_ia32_shufpd.  Provide __builtin_ia32_roundsd and
> 	__builtin_ia32_roundss.
> 	(ix86_init_mmx_sse_builtins): Remove __builtin_ia32_shufps,
> 	__builtin_ia32_shufpd, __builtin_ia32_roundsd and
> 	__builtin_ia32_roundss.
> 	(ix86_expand_builtin): Don't handle IX86_BUILTIN_SHUFPS and
> 	IX86_BUILTIN_SHUFPD here.

This is OK for mainline.

Thanks,
Uros.