Re: [RFC PATCH 16/42] target/mips/tx79: Introduce PSUB* opcodes (Parallel Subtract)

[Richard Henderson]

On 2/14/21 9:58 AM, Philippe Mathieu-Daudé wrote:
> +/* Parallel Subtract Byte */
> +static bool trans_PSUBB(DisasContext *ctx, arg_rtype *a)
> +{
> +    return trans_parallel_substract(ctx, a, 8);
> +}
> +
> +/* Parallel Subtract Halfword */
> +static bool trans_PSUBH(DisasContext *ctx, arg_rtype *a)
> +{
> +    return trans_parallel_substract(ctx, a, 16);
> +}
> +
> +/* Parallel Subtract Word */
> +static bool trans_PSUBW(DisasContext *ctx, arg_rtype *a)
> +{
> +    return trans_parallel_substract(ctx, a, 32);
> +}

We already have helpers for these operations.  Use your trans_parallel_logic
with tcg_gen_vec_sub{8,16,32}_i64.


r~