Re: [PATCH] RISC-V: Enable movmisalign for VLS modes

[Kito Cheng via Gcc-patches]

> +    /* To support misalign data movement, we should use
> +       minimum element alignment load/store.  */
> +    unsigned int size = GET_MODE_SIZE (GET_MODE_INNER (<MODE>mode));
> +    poly_int64 nunits = GET_MODE_NUNITS (<MODE>mode) * size;
> +    machine_mode mode = riscv_vector::get_vector_mode (QImode, 
> nunits).require ();
> +    operands[0] = gen_lowpart (mode, operands[0]);
> +    operands[1] = gen_lowpart (mode, operands[1]);
> +    if (MEM_P (operands[0]) && !register_operand (operands[1], mode))
> +      operands[1] = force_reg (mode, operands[1]);

Does force_reg safe for movmisalign?