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s390x/tcg: Implement VECTOR SUM ACROSS QUADWORD
Similar to VECTOR SUM ACROSS DOUBLEWORD, however without a loop and using 128-bit calculations. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com>
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@ -1184,6 +1184,8 @@
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F(0xe7bd, VSBCBI, VRR_d, V, 0, 0, 0, 0, vsbcbi, 0, IF_VEC)
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/* VECTOR SUM ACROSS DOUBLEWORD */
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F(0xe765, VSUMG, VRR_c, V, 0, 0, 0, 0, vsumg, 0, IF_VEC)
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/* VECTOR SUM ACROSS QUADWORD */
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F(0xe767, VSUMQ, VRR_c, V, 0, 0, 0, 0, vsumq, 0, IF_VEC)
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#ifndef CONFIG_USER_ONLY
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/* COMPARE AND SWAP AND PURGE */
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@ -2281,3 +2281,35 @@ static DisasJumpType op_vsumg(DisasContext *s, DisasOps *o)
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tcg_temp_free_i64(tmp);
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return DISAS_NEXT;
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}
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static DisasJumpType op_vsumq(DisasContext *s, DisasOps *o)
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{
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const uint8_t es = get_field(s->fields, m4);
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const uint8_t max_idx = NUM_VEC_ELEMENTS(es) - 1;
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TCGv_i64 sumh, suml, zero, tmpl;
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uint8_t idx;
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if (es < ES_32 || es > ES_64) {
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gen_program_exception(s, PGM_SPECIFICATION);
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return DISAS_NORETURN;
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}
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sumh = tcg_const_i64(0);
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suml = tcg_temp_new_i64();
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zero = tcg_const_i64(0);
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tmpl = tcg_temp_new_i64();
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read_vec_element_i64(suml, get_field(s->fields, v3), max_idx, es);
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for (idx = 0; idx <= max_idx; idx++) {
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read_vec_element_i64(tmpl, get_field(s->fields, v2), idx, es);
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tcg_gen_add2_i64(suml, sumh, suml, sumh, tmpl, zero);
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}
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write_vec_element_i64(sumh, get_field(s->fields, v1), 0, ES_64);
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write_vec_element_i64(suml, get_field(s->fields, v1), 1, ES_64);
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tcg_temp_free_i64(sumh);
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tcg_temp_free_i64(suml);
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tcg_temp_free_i64(zero);
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tcg_temp_free_i64(tmpl);
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return DISAS_NEXT;
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}
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