From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 99EC2C04AAC for ; Mon, 20 May 2019 17:19:05 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7107B20675 for ; Mon, 20 May 2019 17:19:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7107B20675 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([127.0.0.1]:38996 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hSlwG-0004pG-Ds for qemu-devel@archiver.kernel.org; Mon, 20 May 2019 13:19:04 -0400 Received: from eggs.gnu.org ([209.51.188.92]:53594) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hSljx-0002NH-Jr for qemu-devel@nongnu.org; Mon, 20 May 2019 13:06:24 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hSljv-0003bZ-3L for qemu-devel@nongnu.org; Mon, 20 May 2019 13:06:21 -0400 Received: from mx1.redhat.com ([209.132.183.28]:45144) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hSlju-0003aC-GY; Mon, 20 May 2019 13:06:18 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 3DF0C3680B; Mon, 20 May 2019 17:06:17 +0000 (UTC) Received: from localhost (ovpn-204-110.brq.redhat.com [10.40.204.110]) by smtp.corp.redhat.com (Postfix) with ESMTPS id E2EA4608A7; Mon, 20 May 2019 17:06:11 +0000 (UTC) From: Cornelia Huck To: Peter Maydell Date: Mon, 20 May 2019 19:02:24 +0200 Message-Id: <20190520170302.13643-17-cohuck@redhat.com> In-Reply-To: <20190520170302.13643-1-cohuck@redhat.com> References: <20190520170302.13643-1-cohuck@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Mon, 20 May 2019 17:06:17 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 16/54] s390x/tcg: Implement VECTOR COUNT LEADING ZEROS X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-s390x@nongnu.org, Richard Henderson , qemu-devel@nongnu.org, David Hildenbrand Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: David Hildenbrand For 8/16, use the 32 bit variant and properly subtract the added leading zero bits. Reviewed-by: Richard Henderson Signed-off-by: David Hildenbrand --- target/s390x/helper.h | 2 ++ target/s390x/insn-data.def | 2 ++ target/s390x/translate_vx.inc.c | 31 +++++++++++++++++++++++++++++++ target/s390x/vec_int_helper.c | 14 ++++++++++++++ 4 files changed, 49 insertions(+) diff --git a/target/s390x/helper.h b/target/s390x/helper.h index 21921397fe00..670677427c10 100644 --- a/target/s390x/helper.h +++ b/target/s390x/helper.h @@ -150,6 +150,8 @@ DEF_HELPER_FLAGS_4(gvec_vavg8, TCG_CALL_NO_RWG, void,= ptr, cptr, cptr, i32) DEF_HELPER_FLAGS_4(gvec_vavg16, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, = i32) DEF_HELPER_FLAGS_4(gvec_vavgl8, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, = i32) DEF_HELPER_FLAGS_4(gvec_vavgl16, TCG_CALL_NO_RWG, void, ptr, cptr, cptr,= i32) +DEF_HELPER_FLAGS_3(gvec_vclz8, TCG_CALL_NO_RWG, void, ptr, cptr, i32) +DEF_HELPER_FLAGS_3(gvec_vclz16, TCG_CALL_NO_RWG, void, ptr, cptr, i32) =20 #ifndef CONFIG_USER_ONLY DEF_HELPER_3(servc, i32, env, i64, i64) diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def index 1d159cb20111..be3c07aafb75 100644 --- a/target/s390x/insn-data.def +++ b/target/s390x/insn-data.def @@ -1084,6 +1084,8 @@ E(0xe7fb, VCH, VRR_b, V, 0, 0, 0, 0, vc, 0, TCG_COND_GT, IF_VE= C) /* VECTOR COMPARE HIGH LOGICAL */ E(0xe7f9, VCHL, VRR_b, V, 0, 0, 0, 0, vc, 0, TCG_COND_GTU, IF_V= EC) +/* VECTOR COUNT LEADING ZEROS */ + F(0xe753, VCLZ, VRR_a, V, 0, 0, 0, 0, vclz, 0, IF_VEC) =20 #ifndef CONFIG_USER_ONLY /* COMPARE AND SWAP AND PURGE */ diff --git a/target/s390x/translate_vx.inc.c b/target/s390x/translate_vx.= inc.c index 199742fad095..948c9fbbb10f 100644 --- a/target/s390x/translate_vx.inc.c +++ b/target/s390x/translate_vx.inc.c @@ -182,6 +182,9 @@ static void get_vec_element_ptr_i64(TCGv_ptr ptr, uin= t8_t reg, TCGv_i64 enr, tcg_temp_free_i64(tmp); } =20 +#define gen_gvec_2(v1, v2, gen) \ + tcg_gen_gvec_2(vec_full_reg_offset(v1), vec_full_reg_offset(v2), \ + 16, 16, gen) #define gen_gvec_3(v1, v2, v3, gen) \ tcg_gen_gvec_3(vec_full_reg_offset(v1), vec_full_reg_offset(v2), \ vec_full_reg_offset(v3), 16, 16, gen) @@ -1417,3 +1420,31 @@ static DisasJumpType op_vc(DisasContext *s, DisasO= ps *o) } return DISAS_NEXT; } + +static void gen_clz_i32(TCGv_i32 d, TCGv_i32 a) +{ + tcg_gen_clzi_i32(d, a, 32); +} + +static void gen_clz_i64(TCGv_i64 d, TCGv_i64 a) +{ + tcg_gen_clzi_i64(d, a, 64); +} + +static DisasJumpType op_vclz(DisasContext *s, DisasOps *o) +{ + const uint8_t es =3D get_field(s->fields, m3); + static const GVecGen2 g[4] =3D { + { .fno =3D gen_helper_gvec_vclz8, }, + { .fno =3D gen_helper_gvec_vclz16, }, + { .fni4 =3D gen_clz_i32, }, + { .fni8 =3D gen_clz_i64, }, + }; + + if (es > ES_64) { + gen_program_exception(s, PGM_SPECIFICATION); + return DISAS_NORETURN; + } + gen_gvec_2(get_field(s->fields, v1), get_field(s->fields, v2), &g[es= ]); + return DISAS_NEXT; +} diff --git a/target/s390x/vec_int_helper.c b/target/s390x/vec_int_helper.= c index 8f97d3f466ee..016512547cc4 100644 --- a/target/s390x/vec_int_helper.c +++ b/target/s390x/vec_int_helper.c @@ -46,3 +46,17 @@ void HELPER(gvec_vavgl##BITS)(void *v1, const void *v2= , const void *v3, \ } DEF_VAVGL(8) DEF_VAVGL(16) + +#define DEF_VCLZ(BITS) = \ +void HELPER(gvec_vclz##BITS)(void *v1, const void *v2, uint32_t desc) = \ +{ = \ + int i; = \ + = \ + for (i =3D 0; i < (128 / BITS); i++) { = \ + const uint##BITS##_t a =3D s390_vec_read_element##BITS(v2, i); = \ + = \ + s390_vec_write_element##BITS(v1, i, clz32(a) - 32 + BITS); = \ + } = \ +} +DEF_VCLZ(8) +DEF_VCLZ(16) --=20 2.20.1