From nobody Thu Nov 14 03:58:11 2024 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=1726108907; cv=none; d=zohomail.com; s=zohoarc; b=XLpHPdSFc6RN75gPlbqUjiVEDo+TG+uP876KMD+I8/ni3QqX5aRApuIWz/F2qi38T6uPWKSzz2/vR6Hu4EB/kNIUl3OKHSYFOoDmPtiNKrIEqqxseIv7P24dROqEvfvOdNDY0PrHKTnbowzRx3tS6INkCzANbLcnz0FCq5Ni0FM= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1726108907; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=9bC2pdgCZhVH53QkJRlqyhl6QihYCpdmu7xOBS4i9k0=; b=KNGDAN2BIWu5EDrHFlHNRXGoLhefZBoafTfZ5ToWZ/iMEj2k7jmSblyTykYg4McmerBqEBiH1lzJHKqiZQiPO3H56uXNjvJ7IyWSjKFZQ9zaqANm9hP+ZzxD/1U0QRxB5dVP4xyD9BkFeHaZirIbRarf699EHKOHcFyXaoQPo4A= 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) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1726108907071168.58218595392475; Wed, 11 Sep 2024 19:41:47 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1soZlz-0002zG-Py; Wed, 11 Sep 2024 22:41:31 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1soZlq-0002My-Dj for qemu-devel@nongnu.org; Wed, 11 Sep 2024 22:41:22 -0400 Received: from mail-pl1-x631.google.com ([2607:f8b0:4864:20::631]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1soZlo-00047h-O4 for qemu-devel@nongnu.org; Wed, 11 Sep 2024 22:41:22 -0400 Received: by mail-pl1-x631.google.com with SMTP id d9443c01a7336-206bd1c6ccdso5034145ad.3 for ; Wed, 11 Sep 2024 19:41:20 -0700 (PDT) Received: from stoup.. (174-21-81-121.tukw.qwest.net. [174.21.81.121]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2076afe9c61sm5635915ad.231.2024.09.11.19.41.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Sep 2024 19:41:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1726108879; x=1726713679; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=9bC2pdgCZhVH53QkJRlqyhl6QihYCpdmu7xOBS4i9k0=; b=cq+f0a82nCQzp2+BORa1OUtfwFFj/zFsu1Rg9UNt1kZkyhCC2FEWxxHIjpCf761xPB 0hA2+4vZ/sRKTLwFhPEYjUWAiU4BzcKDtnamZ6BMOTJltKOhal/zZla5fpJ/zGt/R3l7 GjFkaQziJqx3iVsBNiCT6fN2azYi0BnSFtGKMKJXJOJhbs4iekMiFhAmx3GbCQpLSDre yT+7jgKWW2XUPbN6NfNiDaBZMfjpS34Ka4JQ3RmZEOV84Xfd0nqkI2nRcNNIOemteoVo msCckXNRBX/Hprc007hyKGrCAj6cxnBoUCjSAKszBaYlaU06DnXyjFZEN+FHllHYu0qn 5t5g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1726108879; x=1726713679; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=9bC2pdgCZhVH53QkJRlqyhl6QihYCpdmu7xOBS4i9k0=; b=IBeSwdXgXsxVoelUPiugqR8Xj7lhMDVgHispsh8BtzuIDEULENMYvuyEE4YgqoodKC RbG3XFMsTrrFBvGoqcRtVetSDl9WDZ5iO1D3KdMhZfJGH52ezR2eBAZZn2ty64lFbUNt CJexL1bEMHr1R4rcnJU+jHMSd9xOzuWee+0GCgfWeeifOKocTdHccFos4sSdhCp58B5v vYYZKiy1g7CefvVeaM6RLgSdXMvPg487c680A6u66/dDjHQ7fZitWfT8q7LjpAr0ierQ rEbJ2SZZ96/gA/zvlHubCy8d0t2rvogY37CEWjlvNsKekrOo6jf9bDjsG7eQJslo0/3r tuLA== X-Gm-Message-State: AOJu0YxvlHu0otWIR1nuxGQQLQ5UC8EQ0bUueOHWvVzmbc5+IUPBEHHQ dwlGT9FzRj0T8qTAgdqxXTU8BgNtmcaPl+CVsMPciJ3fUGvMkLvC2FgnjGg2xu7o6KZWBP1LiFX Z X-Google-Smtp-Source: AGHT+IHBC3qMCoGyvsKYyAFCOBf83Esal77HSba8NJ5nlRcffgKDCpZJIdm7Z42m5+YfFKULuxVd6Q== X-Received: by 2002:a17:903:190:b0:206:cbf0:3089 with SMTP id d9443c01a7336-2076e44e010mr17777605ad.54.1726108879377; Wed, 11 Sep 2024 19:41:19 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, Peter Maydell Subject: [PATCH v3 03/29] target/arm: Use cmpsel in gen_ushl_vec Date: Wed, 11 Sep 2024 19:40:48 -0700 Message-ID: <20240912024114.1097832-4-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240912024114.1097832-1-richard.henderson@linaro.org> References: <20240912024114.1097832-1-richard.henderson@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=2607:f8b0:4864:20::631; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x631.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: 2.1.29 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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1726108908956116600 Content-Type: text/plain; charset="utf-8" Instead of cmp+and or cmp+andc, use cmpsel. This will be better for hosts that use predicate registers for cmp. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- target/arm/tcg/gengvec.c | 19 ++++++++----------- 1 file changed, 8 insertions(+), 11 deletions(-) diff --git a/target/arm/tcg/gengvec.c b/target/arm/tcg/gengvec.c index 726a1383ae..3edbf3a262 100644 --- a/target/arm/tcg/gengvec.c +++ b/target/arm/tcg/gengvec.c @@ -1041,7 +1041,7 @@ static void gen_ushl_vec(unsigned vece, TCGv_vec dst, TCGv_vec rval =3D tcg_temp_new_vec_matching(dst); TCGv_vec lsh =3D tcg_temp_new_vec_matching(dst); TCGv_vec rsh =3D tcg_temp_new_vec_matching(dst); - TCGv_vec max; + TCGv_vec max, zero; =20 tcg_gen_neg_vec(vece, rsh, shift); if (vece =3D=3D MO_8) { @@ -1061,23 +1061,20 @@ static void gen_ushl_vec(unsigned vece, TCGv_vec ds= t, tcg_gen_shrv_vec(vece, rval, src, rsh); =20 /* - * The choice of LT (signed) and GEU (unsigned) are biased toward + * The choice of GE (signed) and GEU (unsigned) are biased toward * the instructions of the x86_64 host. For MO_8, the whole byte * is significant so we must use an unsigned compare; otherwise we * have already masked to a byte and so a signed compare works. * Other tcg hosts have a full set of comparisons and do not care. */ + zero =3D tcg_constant_vec_matching(dst, vece, 0); max =3D tcg_constant_vec_matching(dst, vece, 8 << vece); if (vece =3D=3D MO_8) { - tcg_gen_cmp_vec(TCG_COND_GEU, vece, lsh, lsh, max); - tcg_gen_cmp_vec(TCG_COND_GEU, vece, rsh, rsh, max); - tcg_gen_andc_vec(vece, lval, lval, lsh); - tcg_gen_andc_vec(vece, rval, rval, rsh); + tcg_gen_cmpsel_vec(TCG_COND_GEU, vece, lval, lsh, max, zero, lval); + tcg_gen_cmpsel_vec(TCG_COND_GEU, vece, rval, rsh, max, zero, rval); } else { - tcg_gen_cmp_vec(TCG_COND_LT, vece, lsh, lsh, max); - tcg_gen_cmp_vec(TCG_COND_LT, vece, rsh, rsh, max); - tcg_gen_and_vec(vece, lval, lval, lsh); - tcg_gen_and_vec(vece, rval, rval, rsh); + tcg_gen_cmpsel_vec(TCG_COND_GE, vece, lval, lsh, max, zero, lval); + tcg_gen_cmpsel_vec(TCG_COND_GE, vece, rval, rsh, max, zero, rval); } tcg_gen_or_vec(vece, dst, lval, rval); } @@ -1087,7 +1084,7 @@ void gen_gvec_ushl(unsigned vece, uint32_t rd_ofs, ui= nt32_t rn_ofs, { static const TCGOpcode vecop_list[] =3D { INDEX_op_neg_vec, INDEX_op_shlv_vec, - INDEX_op_shrv_vec, INDEX_op_cmp_vec, 0 + INDEX_op_shrv_vec, INDEX_op_cmpsel_vec, 0 }; static const GVecGen3 ops[4] =3D { { .fniv =3D gen_ushl_vec, --=20 2.43.0