Re: [RFC PATCH 22/42] target/mips/tx79: Introduce PINTEH (Parallel Interleave Even Halfword)

[Richard Henderson]

On 2/14/21 9:58 AM, Philippe Mathieu-Daudé wrote:
> +    /* Lower halve */
> +    gen_load_gpr(ax, a->rs);
> +    gen_load_gpr(bx, a->rt);
> +    if (a->rd != a->rt) {
> +        tcg_gen_mov_i64(cpu_gpr[a->rd], bx);
> +    }
> +    tcg_gen_deposit_i64(cpu_gpr[a->rd], cpu_gpr[a->rd], ax, 16, 16);
> +    tcg_gen_shri_i64(ax, ax, 32);
> +    tcg_gen_deposit_i64(cpu_gpr[a->rd], cpu_gpr[a->rd], ax, 48, 16);

  mask = tcg_constant_i64(0x0000ffff0000ffffull);
  tcg_gen_shli_i64(x, a, 8);
  tcg_gen_and_i64(x, x, mask);
  tcg_gen_and_i64(y, b, mask);
  tcg_gen_or_i64(d, x, y);

and then you can use trans_parallel_logic.


r~