[{"id":3675008,"web_url":"http://patchwork.ozlabs.org/comment/3675008/","msgid":"","list_archive_url":null,"date":"2026-04-08T22:12:42","subject":"Re: [PATCH v3 06/16] target/hexagon: add v68 HVX IEEE float\n arithmetic insns","submitter":{"id":86757,"url":"http://patchwork.ozlabs.org/api/people/86757/","name":"Taylor Simpson","email":"ltaylorsimpson@gmail.com"},"content":"On Wed, Apr 8, 2026 at 10:37 AM Matheus Tavares Bernardino <\nmatheus.bernardino@oss.qualcomm.com> wrote:\n\n> Add HVX IEEE floating-point arithmetic instructions:\n> - vmpy_sf_sf, vmpy_sf_hf, vmpy_hf_hf: multiply operations\n> - vdmpy_sf_hf: dot-product multiply\n> - vmpy_sf_hf_acc, vmpy_hf_hf_acc, vdmpy_sf_hf_acc: multiply-accumulate\n> - vadd_sf_sf, vsub_sf_sf, vadd_sf_hf, vsub_sf_hf: add/sub with sf output\n> - vadd_hf_hf, vsub_hf_hf: add/sub with hf output\n>\n> Signed-off-by: Matheus Tavares Bernardino <\n> matheus.bernardino@oss.qualcomm.com>\n> ---\n> target/hexagon/cpu.h | 1 +\n> target/hexagon/mmvec/hvx_ieee_fp.h | 18 ++++\n> target/hexagon/mmvec/macros.h | 1 +\n> target/hexagon/mmvec/mmvec.h | 2 +\n> target/hexagon/attribs_def.h.inc | 4 +\n> target/hexagon/arch.c | 8 ++\n> target/hexagon/cpu.c | 3 +\n> target/hexagon/mmvec/hvx_ieee_fp.c | 21 ++++\n> target/hexagon/hex_common.py | 1 +\n> target/hexagon/imported/mmvec/encode_ext.def | 18 ++++\n> target/hexagon/imported/mmvec/ext.idef | 101 +++++++++++++++++++\n> target/hexagon/meson.build | 1 +\n> 12 files changed, 179 insertions(+)\n> create mode 100644 target/hexagon/mmvec/hvx_ieee_fp.h\n> create mode 100644 target/hexagon/mmvec/hvx_ieee_fp.c\n>\n>\n> diff --git a/target/hexagon/mmvec/hvx_ieee_fp.h\n> b/target/hexagon/mmvec/hvx_ieee_fp.h\n> new file mode 100644\n> index 0000000000..75008deb3b\n> --- /dev/null\n>\n> +\n> +#define f16_to_f32(A) float16_to_float32((A), true, &env->hvx_fp_status)\n> +\n>\n\n\n> diff --git a/target/hexagon/mmvec/hvx_ieee_fp.c\n> b/target/hexagon/mmvec/hvx_ieee_fp.c\n> new file mode 100644\n> index 0000000000..3367226998\n> --- /dev/null\n> +++ b/target/hexagon/mmvec/hvx_ieee_fp.c\n> @@ -0,0 +1,21 @@\n> +/*\n> + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.\n> + *\n> + * SPDX-License-Identifier: GPL-2.0-or-later\n> + */\n> +\n> +#include \"qemu/osdep.h\"\n> +#include \"hvx_ieee_fp.h\"\n> +\n> +float32 fp_mult_sf_hf(float16 a1, float16 a2, float_status *fp_status)\n> +{\n> + return float32_mul(float16_to_float32(a1, true, fp_status),\n> + float16_to_float32(a2, true, fp_status),\n> fp_status);\n>\n\nUse f16_to_f32.\n\nOtherwise\nReviewed-by: Taylor Simpson ","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=M0qtSczk;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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Wed, 08 Apr 2026\n 15:12:53 -0700 (PDT)","MIME-Version":"1.0","References":"\n <42b4b2d1c61637d9fd951f05371fad452d9af77e.1775665981.git.matheus.bernardino@oss.qualcomm.com>","In-Reply-To":"\n <42b4b2d1c61637d9fd951f05371fad452d9af77e.1775665981.git.matheus.bernardino@oss.qualcomm.com>","From":"Taylor Simpson ","Date":"Wed, 8 Apr 2026 16:12:42 -0600","X-Gm-Features":"AQROBzDTlm4cPMF8YborykemGqJ4FCeESqekrkk66mD70myGCyU4TIHqhrYFXFg","Message-ID":"\n ","Subject":"Re: [PATCH v3 06/16] target/hexagon: add v68 HVX IEEE float\n arithmetic insns","To":"Matheus Tavares Bernardino ","Cc":"qemu-devel@nongnu.org, richard.henderson@linaro.org, ale@rev.ng,\n anjo@rev.ng, brian.cain@oss.qualcomm.com, marco.liebel@oss.qualcomm.com,\n philmd@linaro.org, quic_mburton@quicinc.com, sid.manning@oss.qualcomm.com","Content-Type":"multipart/alternative; boundary=\"000000000000852dd4064efa33fb\"","Received-SPF":"pass client-ip=2607:f8b0:4864:20::1029;\n envelope-from=ltaylorsimpson@gmail.com; helo=mail-pj1-x1029.google.com","X-Spam_score_int":"-20","X-Spam_score":"-2.1","X-Spam_bar":"--","X-Spam_report":"(-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001,\n HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n SPF_PASS=-0.001 autolearn=ham autolearn_force=no","X-Spam_action":"no action","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"qemu development ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"}},{"id":3675419,"web_url":"http://patchwork.ozlabs.org/comment/3675419/","msgid":"","list_archive_url":null,"date":"2026-04-09T17:29:17","subject":"Re: [PATCH v3 06/16] target/hexagon: add v68 HVX IEEE float\n arithmetic insns","submitter":{"id":90606,"url":"http://patchwork.ozlabs.org/api/people/90606/","name":"Matheus Tavares Bernardino","email":"matheus.bernardino@oss.qualcomm.com"},"content":"On Wed, Apr 8, 2026 at 7:12 PM Taylor Simpson wrote:\n>\n>\n>\n> On Wed, Apr 8, 2026 at 10:37 AM Matheus Tavares Bernardino wrote:\n>>\n>> Add HVX IEEE floating-point arithmetic instructions:\n>> - vmpy_sf_sf, vmpy_sf_hf, vmpy_hf_hf: multiply operations\n>> - vdmpy_sf_hf: dot-product multiply\n>> - vmpy_sf_hf_acc, vmpy_hf_hf_acc, vdmpy_sf_hf_acc: multiply-accumulate\n>> - vadd_sf_sf, vsub_sf_sf, vadd_sf_hf, vsub_sf_hf: add/sub with sf output\n>> - vadd_hf_hf, vsub_hf_hf: add/sub with hf output\n>>\n>> Signed-off-by: Matheus Tavares Bernardino \n>> ---\n>> target/hexagon/cpu.h | 1 +\n>> target/hexagon/mmvec/hvx_ieee_fp.h | 18 ++++\n>> target/hexagon/mmvec/macros.h | 1 +\n>> target/hexagon/mmvec/mmvec.h | 2 +\n>> target/hexagon/attribs_def.h.inc | 4 +\n>> target/hexagon/arch.c | 8 ++\n>> target/hexagon/cpu.c | 3 +\n>> target/hexagon/mmvec/hvx_ieee_fp.c | 21 ++++\n>> target/hexagon/hex_common.py | 1 +\n>> target/hexagon/imported/mmvec/encode_ext.def | 18 ++++\n>> target/hexagon/imported/mmvec/ext.idef | 101 +++++++++++++++++++\n>> target/hexagon/meson.build | 1 +\n>> 12 files changed, 179 insertions(+)\n>> create mode 100644 target/hexagon/mmvec/hvx_ieee_fp.h\n>> create mode 100644 target/hexagon/mmvec/hvx_ieee_fp.c\n>>\n>>\n>> diff --git a/target/hexagon/mmvec/hvx_ieee_fp.h b/target/hexagon/mmvec/hvx_ieee_fp.h\n>> new file mode 100644\n>> index 0000000000..75008deb3b\n>> --- /dev/null\n>>\n>> +\n>> +#define f16_to_f32(A) float16_to_float32((A), true, &env->hvx_fp_status)\n>> +\n>\n>\n>>\n>> diff --git a/target/hexagon/mmvec/hvx_ieee_fp.c b/target/hexagon/mmvec/hvx_ieee_fp.c\n>> new file mode 100644\n>> index 0000000000..3367226998\n>> --- /dev/null\n>> +++ b/target/hexagon/mmvec/hvx_ieee_fp.c\n>> @@ -0,0 +1,21 @@\n>> +/*\n>> + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.\n>> + *\n>> + * SPDX-License-Identifier: GPL-2.0-or-later\n>> + */\n>> +\n>> +#include \"qemu/osdep.h\"\n>> +#include \"hvx_ieee_fp.h\"\n>> +\n>> +float32 fp_mult_sf_hf(float16 a1, float16 a2, float_status *fp_status)\n>> +{\n>> + return float32_mul(float16_to_float32(a1, true, fp_status),\n>> + float16_to_float32(a2, true, fp_status), fp_status);\n>\n>\n> Use f16_to_f32.\n\nWe cannot use it here, as this macro assumes \"env\" is available to use\n&env->hvx_fp_status. We don't have env here, and we do have an\nfp_status to be used.","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=qualcomm.com header.i=@qualcomm.com header.a=rsa-sha256\n header.s=qcppdkim1 header.b=gY3aY9BL;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com\n header.a=rsa-sha256 header.s=google header.b=R7sbmOtO;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)"],"Received":["from lists.gnu.org (lists1p.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fs6Pp60vgz1yCv\n\tfor ; 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