From nobody Tue Feb 10 23:14:20 2026 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=1665029867; cv=none; d=zohomail.com; s=zohoarc; b=BVE5JF7N6LC2BIl+qFrKxkcY3s9eAVY8cxBMauyuGHbSePGQW1CYeVPwae+7NdrWKC4kPHIFzzeFLaqBi5Er3/L1VC1GqwtFzuDmiM6N/vp/HTSKevivm3W6yMvmE++LaYyzkOanBLtQpwOFyTZ06q22Z2uKfvs4c/Len3KpLhU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1665029867; h=Content-Transfer-Encoding:Cc: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=7HI+xpPxCIX6BauxWntrNZ0C5lHr5ZXLxWzQGdsbbe4=; b=ge81GsXcCQNtygpoptwCEdY8ZWxuSuNWoeiOfHy++wzO7VxrAEm9z1o3y7SW68JtkWXMrP/k0IeneDRkITnJv60dZdorjpFdAR4eWhOHBQK6jVhu3lU2V2lebYSiKfRMW3D0K47KFsArdPo03+ITXtBIz1T1nzAMcditxaapCv0= 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 1665029867285363.07190968605846; Wed, 5 Oct 2022 21:17:47 -0700 (PDT) Received: from localhost ([::1]:38066 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ogIKQ-0001i5-AQ for importer@patchew.org; Thu, 06 Oct 2022 00:17:46 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:47920) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ogHoQ-0004Ke-R1 for qemu-devel@nongnu.org; Wed, 05 Oct 2022 23:44:46 -0400 Received: from mail-pg1-x534.google.com ([2607:f8b0:4864:20::534]:46902) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1ogHoN-0003xB-M9 for qemu-devel@nongnu.org; Wed, 05 Oct 2022 23:44:42 -0400 Received: by mail-pg1-x534.google.com with SMTP id 78so718972pgb.13 for ; Wed, 05 Oct 2022 20:44:39 -0700 (PDT) Received: from stoup.. ([2602:47:d49d:ec01:9ad0:4307:7d39:bb61]) by smtp.gmail.com with ESMTPSA id y6-20020a17090ad0c600b00205f4f7a3b3sm1905086pjw.21.2022.10.05.20.44.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 05 Oct 2022 20:44:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date; bh=7HI+xpPxCIX6BauxWntrNZ0C5lHr5ZXLxWzQGdsbbe4=; b=cZjtz7zvp4/OiXRRM3IPKHzvAx0Tkgbvq2kkevwyhVC6+bvNlFgq08dSlEnmzN0p0G n2b7Nz6KGdr8LRLEfPXN0GnqC2aT/qMnlZgYdKaEpyxrPKW2vRKM6NJmPakkfl/cWpt7 cwQ4fQMqN7qtPAib0UOSGVyfaNEEvm1phQyDJqG7MMCzg+sIg/J2h/i0V6qdg2ri/C3r l2WcveNAbp5zdyZBzEA+YcONXwb0n8HVZmOaDpxT1nxGO7iNzjiuH9c5GBYtp8M1llZ+ 2k8M+nIg0nLGyzKjNmnwhOz49NO4ldQTkMcuDQZobwELeg0RHBmYusfXlayrefNRHTUd EJWg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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; bh=7HI+xpPxCIX6BauxWntrNZ0C5lHr5ZXLxWzQGdsbbe4=; b=FDJSCmvsGSBBF8JvOMRF5P7cQzfXWBPW3yMmgDetiaxX3yOypG4iRl8fb6YpgYRBdY MeEkHMciryj4KgdOLCPOS2jaIwhoqOPXSj41e9a3Sy9AotxVOGB0NDUs1zbnj92hkSN1 Ab6Jms6JRCytY7B0bJcwjUTDa4YRxUEkUzk7nRMTPvXDeaYSJP0eNGez/umpRHsBThrY 7AWpXOv5tlp1bRlexv0skwt4goAIq6Sx7b+mO1vwgCzFmgNlESUIpIIi1ua2MxJCj9mU 1dFKq17EimOXy0j+OAXYEjKwuK7z1PhPYNSQ8ggUqkHdH8F2ZVDBbTyakrUNwZd2DgG5 8g3w== X-Gm-Message-State: ACrzQf2Zcv9JrR/JdAb4EmENusXjPusPOIcwMupdPXzQt+0vvDdyiYTs CA/7FPxf0jitQdSdQodrzBkc/5EnYUm5Wg== X-Google-Smtp-Source: AMsMyM43uyjSN1RNBzrOmjsVsqUX0WzStnus83HM6qTU2HkbCh8uV+VnFZ5ncvQunqcQWtGe7Kq5rQ== X-Received: by 2002:a63:87c3:0:b0:450:9613:c3d4 with SMTP id i186-20020a6387c3000000b004509613c3d4mr2719650pge.455.1665027878332; Wed, 05 Oct 2022 20:44:38 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-s390x@nongnu.org Subject: [PATCH 16/26] target/s390x: Disable conditional branch-to-next for PER Date: Wed, 5 Oct 2022 20:44:11 -0700 Message-Id: <20221006034421.1179141-17-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221006034421.1179141-1-richard.henderson@linaro.org> References: <20221006034421.1179141-1-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::534; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x534.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=unavailable 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" X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1665029867476100001 Content-Type: text/plain; charset="utf-8" For PER, we require a conditional call to helper_per_branch for the conditional branch. Fold the remaining optimization into a call to helper_goto_direct, which will take care of the remaining gbea adjustment. Signed-off-by: Richard Henderson Reviewed-by: Ilya Leoshkevich --- target/s390x/tcg/translate.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/target/s390x/tcg/translate.c b/target/s390x/tcg/translate.c index cd311b4b2a..fc6b04e23e 100644 --- a/target/s390x/tcg/translate.c +++ b/target/s390x/tcg/translate.c @@ -1203,13 +1203,12 @@ static DisasJumpType help_branch(DisasContext *s, D= isasCompare *c, goto egress; } if (is_imm) { - if (disp =3D=3D s->ilen) { - /* Branch to next. */ - per_branch(s, true); - ret =3D DISAS_NEXT; - goto egress; - } - if (c->cond =3D=3D TCG_COND_ALWAYS) { + /* + * Do not optimize a conditional branch if PER enabled, because we + * still need a conditional call to helper_per_branch. + */ + if (c->cond =3D=3D TCG_COND_ALWAYS + || (disp =3D=3D s->ilen && !per_enabled(s))) { ret =3D help_goto_direct(s, disp); goto egress; } --=20 2.34.1