vector operations and scalar operands

[Richard Henderson]

On Sun, Feb 09, 2003 at 03:46:19PM +0100, Jan Hubicka wrote:
> Hi,
> the pattern:
>   [(set (match_operand:V4HI 0 "register_operand" "=y")
>         (ashiftrt:V4HI (match_operand:V4HI 1 "register_operand" "0")
> 		       (match_operand:DI 2 "nonmemory_operand" "yi")))]
> won't get simplified by my code as it expect vectors in all operands.
> Some other places of i386.md does this with vectors:
> 
> (define_insn "mmx_uavgv4hi3"
>   [(set (match_operand:V4HI 0 "register_operand" "=y")
>         (ashiftrt:V4HI
> 	 (plus:V4HI (plus:V4HI
> 		     (match_operand:V4HI 1 "register_operand" "0")
> 		     (match_operand:V4HI 2 "nonimmediate_operand" "ym"))
> 		    (const_vector:V4HI [(const_int 1)
> 					(const_int 1)
> 					(const_int 1)
> 					(const_int 1)]))
> 	 (const_int 1)))]

Huh?  Both of these cases use a scalar as the rhs of a shift.
I think that makes sense.


r~