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s390x/tcg: Implement VECTOR SUM ACROSS WORD 

Similar to VECTOR SUM ACROSS DOUBLEWORD.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
This commit is contained in:
David Hildenbrand 2019-04-10 22:45:35 +02:00
parent 8dc69a196e
commit e58de341d9
2 changed files with 31 additions and 0 deletions
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2
target/s390x/insn-data.def
View File

@ -1186,6 +1186,8 @@
F(0xe765, VSUMG, VRR_c, V, 0, 0, 0, 0, vsumg, 0, IF_VEC)
/* VECTOR SUM ACROSS QUADWORD */
F(0xe767, VSUMQ, VRR_c, V, 0, 0, 0, 0, vsumq, 0, IF_VEC)
/* VECTOR SUM ACROSS WORD */
F(0xe764, VSUM, VRR_c, V, 0, 0, 0, 0, vsum, 0, IF_VEC)
#ifndef CONFIG_USER_ONLY
/* COMPARE AND SWAP AND PURGE */

29
target/s390x/translate_vx.inc.c
View File

@ -2313,3 +2313,32 @@ static DisasJumpType op_vsumq(DisasContext *s, DisasOps *o)
tcg_temp_free_i64(tmpl);
return DISAS_NEXT;
}
static DisasJumpType op_vsum(DisasContext *s, DisasOps *o)
{
const uint8_t es = get_field(s->fields, m4);
TCGv_i32 sum, tmp;
uint8_t dst_idx;
if (es > ES_16) {
gen_program_exception(s, PGM_SPECIFICATION);
return DISAS_NORETURN;
}
sum = tcg_temp_new_i32();
tmp = tcg_temp_new_i32();
for (dst_idx = 0; dst_idx < 4; dst_idx++) {
uint8_t idx = dst_idx * NUM_VEC_ELEMENTS(es) / 4;
const uint8_t max_idx = idx + NUM_VEC_ELEMENTS(es) / 4 - 1;
read_vec_element_i32(sum, get_field(s->fields, v3), max_idx, es);
for (; idx <= max_idx; idx++) {
read_vec_element_i32(tmp, get_field(s->fields, v2), idx, es);
tcg_gen_add_i32(sum, sum, tmp);
}
write_vec_element_i32(sum, get_field(s->fields, v1), dst_idx, ES_32);
}
tcg_temp_free_i32(sum);
tcg_temp_free_i32(tmp);
return DISAS_NEXT;
}