On 3/1/19 3:53 AM, David Hildenbrand wrote:
> + /*
> + * Check for possible access exceptions by trying to load the last
> + * element. The first element will be checked first next.
> + */
> + t = tcg_temp_new_i64();
> + gen_addi_and_wrap_i64(s, t, o->addr1, (v3 - v1) * 16 + 8);
> + tcg_gen_qemu_ld_i64(t, t, get_mem_index(s), MO_TEQ);
qemu_ld expands to enough code that it is a shame to discard this value and
reload it during this loop. Perhaps load this to t2...
> +
> + for (;; v1++) {
> + tcg_gen_qemu_ld_i64(t, o->addr1, get_mem_index(s), MO_TEQ);
> + write_vec_element_i64(t, v1, 0, ES_64);
Move v1 == v3 break here...
> + gen_addi_and_wrap_i64(s, o->addr1, o->addr1, 8);
> + tcg_gen_qemu_ld_i64(t, o->addr1, get_mem_index(s), MO_TEQ);
> + write_vec_element_i64(t, v1, 1, ES_64);
> + if (v1 == v3) {
> + break;
> + }
> + gen_addi_and_wrap_i64(s, o->addr1, o->addr1, 8);
> + }
... and store t2 into v3 element 1 after the loop.
r~
