[Committed] S/390: Add bswaphi2 pattern

[Richard Henderson]

On 11/20/2015 12:52 PM, Andreas Krebbel wrote:
> +(define_insn "bswaphi2"
> +  [(set (match_operand:HI 0           "register_operand" "=d")
> +	(bswap:HI (match_operand:HI 1 "memory_operand"   "RT")))]
> +  "TARGET_CPU_ZARCH"
> +  "lrvh\t%0,%1"
> +  [(set_attr "type" "load")
> +   (set_attr "op_type" "RXY")
> +   (set_attr "z10prop" "z10_super")])

Surely it's better to arrange so that you can use STRVH as well.
And providing a fallback for the reg-reg case (e.g. LRVR+SRL).

Although I suppose I don't see support for STRV in bswap32/64 either...


r~