(vec_select:V4SF
(vec_concat:V8SF
(match_operand:V4SF 1 "nonimmediate_operand" " 0,x,0,x,0")
- (match_operand:V4SF 2 "nonimmediate_operand" " x,x,m,x,x"))
+ (match_operand:V4SF 2 "nonimmediate_operand" " x,x,m,m,x"))
(parallel [(const_int 0)
(const_int 1)
(const_int 4)