On 4/11/19 12:08 AM, David Hildenbrand wrote:
> +static DisasJumpType op_vsldb(DisasContext *s, DisasOps *o)
> +{
> + int src_idx = get_field(s->fields, i4) & 0xf;
> +
> + if (src_idx == 0) {
> + gen_gvec_mov(get_field(s->fields, v1), get_field(s->fields, v2));
> + } else {
> + gen_gvec_3_ool(get_field(s->fields, v1), get_field(s->fields, v2),
> + get_field(s->fields, v3), src_idx,
> + gen_helper_gvec_vsldb);
> + return DISAS_NEXT;
You could also expand this inline using your new extract2 primitive.
int i4 = get_field(s->fields, i4);
int left_shift, right_shift;
left_shift = (i4 & 7) * 8;
right_shift = 64 - left_shift;
if ((i4 & 8) == 0) {
read_vec_element_i64(t0, get_field(s->fields, v2), 0, ES_64);
read_vec_element_i64(t1, get_field(s->fields, v2), 1, ES_64);
read_vec_element_i64(t2, get_field(s->fields, v3), 0, ES_64);
} else {
read_vec_element_i64(t0, get_field(s->fields, v2), 1, ES_64);
read_vec_element_i64(t1, get_field(s->fields, v3), 0, ES_64);
read_vec_element_i64(t2, get_field(s->fields, v3), 1, ES_64);
}
tcg_gen_extract2_i64(t0, t1, t0, right_shift);
tcg_gen_extract2_i64(t1, t2, t1, right_shift);
write_vec_element_i64(t0, get_field(s->fields, v1), 0, ES_64);
write_vec_element_i64(t1, get_field(s->fields, v1), 1, ES_64);
r~
