From nobody Thu Dec 18 19:32:56 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1615557860; cv=none; d=zohomail.com; s=zohoarc; b=jE0gku/WBsigpzX3xCe4nvkirpy+GJepidzC9xt9SF+HS5QiJbRtgy1hyinsOGnis0TrrV8qQg/3TQsqegh/QkzzSUSwSzE/EEeTsAmu6jSUubSI0/v9oOJIUd/2loHtJ2Cut2mMcPZUzd4McJkXjDnTzDHBJeygxSUm9k2Hdjs= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1615557860; h=Content-Transfer-Encoding:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=ik9jvanJtzvUGmVetGUeUXXj1nZla8t1qz4dVFL21YM=; b=RJFiju7fc/eJcwA65aSwk21ZNEWlaOUxZdvuBeOzLtQKXau9aytUih+4oKI7XV599bOL5OOXvjlKBuAXbCCYE6Pqu584qr5eI+o/Qi0AQm2rbypsJSMCEaUgMrbAmGw0FcLy3lc/pVvFjlybXSDutZ9OilaYX5JkL/h+mZygeRc= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1615557860930951.9945904112283; Fri, 12 Mar 2021 06:04:20 -0800 (PST) Received: from localhost ([::1]:47674 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lKiOp-0001OP-Of for importer@patchew.org; Fri, 12 Mar 2021 09:04:19 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:43602) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lKiCy-0002qs-R6 for qemu-devel@nongnu.org; Fri, 12 Mar 2021 08:52:04 -0500 Received: from mail-wm1-x330.google.com ([2a00:1450:4864:20::330]:35501) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lKiCm-0001xm-5G for qemu-devel@nongnu.org; Fri, 12 Mar 2021 08:52:04 -0500 Received: by mail-wm1-x330.google.com with SMTP id c76-20020a1c9a4f0000b029010c94499aedso15840807wme.0 for ; Fri, 12 Mar 2021 05:51:50 -0800 (PST) Received: from orth.archaic.org.uk (orth.archaic.org.uk. [81.2.115.148]) by smtp.gmail.com with ESMTPSA id m6sm7964994wrv.73.2021.03.12.05.51.49 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Mar 2021 05:51:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=ik9jvanJtzvUGmVetGUeUXXj1nZla8t1qz4dVFL21YM=; b=VT6SEJB0wVrvAIpK0e9Z+Abvgx0ERGsOu31qFS1V1hDg4buefD/xftTjw+EM0iIpnp 0evQZrF9ChlqtAoBWVxXFvs1ZXY6wp0XJQ4eR2JYzQ1W+g9TzCkRYUTUPXVtDeXjw0zk Pju4ipanZr4ckZDd1Vew4pimtEKT1LC186HNnh2+WC2tzHtzfaqmfnSn/dlnjbSvTEj3 NimWjSwugINtpq0SqQxCZkFjPpr7UybZ7jMvsPLn1TJ6BnHfPY4bRniABHnES7H8I86U wORzXkbiE5Crt7bgi376eMXkB03AMMoj/i8o2Xi5/Q2smMslGdKF01XvEmgT9b3a4QDM 1GGQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ik9jvanJtzvUGmVetGUeUXXj1nZla8t1qz4dVFL21YM=; b=IWNuUB/VYPuT/PyTpJKvhVBXKJqw+COdFG1iIJPxTx+LpyBH9+tbJiRFwyC+/FAroo ZIdAK+tJt2CggSdqE209c3QhMrR9e8cYtwj9mt0Ldxb5RLXnk0zvCRH8JixNEIeyZjE4 FrwxHsaIEfk58Jl3mcXkjWW3v6atDQy0mSLFYlYBAVe8110j29TIoWwCzduqOOwQcEV0 nyec93NYKF/KRTKkxBsdKogS20WPq2+fafsTv9LZk7xNd2pLuQtIaAFmMbp+Ur+SHdbj Yay8WSVNN9/tS7dxAd2Tn5WYw87zLhD9KkSojBGURibExzOSgG5vLUueIp5Tlpntbawc 9trQ== X-Gm-Message-State: AOAM532Zma8eS5rO+K1au3zhaIAqJ/Mw8g+9Hl+Ze5xEBIcg2lCHLFhO 1dLanJdID4AaODMG4HyuwM0LSeDfZ86p0FjG X-Google-Smtp-Source: ABdhPJzNRSvHbTMql9LRrQLmKvVL3T9I/wwAJUl+zAMHT71S9tVQu/u23VOEA2pnBqmQaky3zFg/bg== X-Received: by 2002:a1c:7714:: with SMTP id t20mr12924175wmi.107.1615557110146; Fri, 12 Mar 2021 05:51:50 -0800 (PST) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 11/39] target/arm: Fix sve_zip_p vs odd vector lengths Date: Fri, 12 Mar 2021 13:51:12 +0000 Message-Id: <20210312135140.1099-12-peter.maydell@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210312135140.1099-1-peter.maydell@linaro.org> References: <20210312135140.1099-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::330; envelope-from=peter.maydell@linaro.org; helo=mail-wm1-x330.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, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" From: Richard Henderson Wrote too much with low-half zip (zip1) with vl % 512 !=3D 0. Adjust all of the x + (y << s) to x | (y << s) as a style fix. We only ever have exact overlap between D, M, and N. Therefore we only need a single temporary, and we do not need to check for partial overlap. Reported-by: Laurent Desnogues Signed-off-by: Richard Henderson Message-id: 20210309155305.11301-3-richard.henderson@linaro.org Reviewed-by: Peter Maydell Signed-off-by: Peter Maydell --- target/arm/sve_helper.c | 25 ++++++++++++++----------- 1 file changed, 14 insertions(+), 11 deletions(-) diff --git a/target/arm/sve_helper.c b/target/arm/sve_helper.c index 11c9397dbb6..2fb4b2c1ea2 100644 --- a/target/arm/sve_helper.c +++ b/target/arm/sve_helper.c @@ -1871,6 +1871,7 @@ void HELPER(sve_zip_p)(void *vd, void *vn, void *vm, = uint32_t pred_desc) intptr_t oprsz =3D FIELD_EX32(pred_desc, PREDDESC, OPRSZ); int esz =3D FIELD_EX32(pred_desc, PREDDESC, ESZ); intptr_t high =3D FIELD_EX32(pred_desc, PREDDESC, DATA); + int esize =3D 1 << esz; uint64_t *d =3D vd; intptr_t i; =20 @@ -1883,33 +1884,35 @@ void HELPER(sve_zip_p)(void *vd, void *vn, void *vm= , uint32_t pred_desc) mm =3D extract64(mm, high * half, half); nn =3D expand_bits(nn, esz); mm =3D expand_bits(mm, esz); - d[0] =3D nn + (mm << (1 << esz)); + d[0] =3D nn | (mm << esize); } else { - ARMPredicateReg tmp_n, tmp_m; + ARMPredicateReg tmp; =20 /* We produce output faster than we consume input. Therefore we must be mindful of possible overlap. */ - if ((vn - vd) < (uintptr_t)oprsz) { - vn =3D memcpy(&tmp_n, vn, oprsz); - } - if ((vm - vd) < (uintptr_t)oprsz) { - vm =3D memcpy(&tmp_m, vm, oprsz); + if (vd =3D=3D vn) { + vn =3D memcpy(&tmp, vn, oprsz); + if (vd =3D=3D vm) { + vm =3D vn; + } + } else if (vd =3D=3D vm) { + vm =3D memcpy(&tmp, vm, oprsz); } if (high) { high =3D oprsz >> 1; } =20 - if ((high & 3) =3D=3D 0) { + if ((oprsz & 7) =3D=3D 0) { uint32_t *n =3D vn, *m =3D vm; high >>=3D 2; =20 - for (i =3D 0; i < DIV_ROUND_UP(oprsz, 8); i++) { + for (i =3D 0; i < oprsz / 8; i++) { uint64_t nn =3D n[H4(high + i)]; uint64_t mm =3D m[H4(high + i)]; =20 nn =3D expand_bits(nn, esz); mm =3D expand_bits(mm, esz); - d[i] =3D nn + (mm << (1 << esz)); + d[i] =3D nn | (mm << esize); } } else { uint8_t *n =3D vn, *m =3D vm; @@ -1921,7 +1924,7 @@ void HELPER(sve_zip_p)(void *vd, void *vn, void *vm, = uint32_t pred_desc) =20 nn =3D expand_bits(nn, esz); mm =3D expand_bits(mm, esz); - d16[H2(i)] =3D nn + (mm << (1 << esz)); + d16[H2(i)] =3D nn | (mm << esize); } } } --=20 2.20.1