Re: [RFC PATCH 05/43] target/loongarch: Implement vadd/vsub

[Richard Henderson]

On 12/24/22 00:15, Song Gao wrote:
> +static bool gen_vvv(DisasContext *ctx, arg_vvv *a,
> +                    void (*func)(TCGv_ptr, TCGv_i32, TCGv_i32, TCGv_i32))
> +{
> +    TCGv_i32 vd = tcg_constant_i32(a->vd);
> +    TCGv_i32 vj = tcg_constant_i32(a->vj);
> +    TCGv_i32 vk = tcg_constant_i32(a->vk);
> +
> +    CHECK_SXE;
> +    func(cpu_env, vd, vj, vk);
> +    return true;
> +}
> +
> +TRANS(vadd_b, gen_vvv, gen_helper_vadd_b)
> +TRANS(vadd_h, gen_vvv, gen_helper_vadd_h)
> +TRANS(vadd_w, gen_vvv, gen_helper_vadd_w)
> +TRANS(vadd_d, gen_vvv, gen_helper_vadd_d)
> +TRANS(vadd_q, gen_vvv, gen_helper_vadd_q)
> +TRANS(vsub_b, gen_vvv, gen_helper_vsub_b)
> +TRANS(vsub_h, gen_vvv, gen_helper_vsub_h)
> +TRANS(vsub_w, gen_vvv, gen_helper_vsub_w)
> +TRANS(vsub_d, gen_vvv, gen_helper_vsub_d)
> +TRANS(vsub_q, gen_vvv, gen_helper_vsub_q)

The 8 to 64-bit operations can be implemented with tcg_gen_gvec_{add,sub}.
The 128-bit operations can be implemented with tcg_gen_{add,sub}2_i64.


r~