From nobody Mon Feb 9 16:21:06 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=1768534635; cv=none; d=zohomail.com; s=zohoarc; b=ONi/081q9/cVv1wVyyp10gD9vs/uTSiK8aExAJp8qXO1MWXbZ70UIQAjBOqHvmp1fQYljpKV0mNgKJ4skbypY6vrawcLKW58+RBnipmPujsY73GxAMINN12/QaRVz16/Una36lQ8L3+UDDF4r5dlD6FeA7nC49Ua3UxhVjsQt5M= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768534635; 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=pUs/qizOln6k9oFq1nxTBHzlXvp7JuDaMx2406hQaG0=; b=g6EsRgAF2CdUJtWHCNa1Ym/vhfQcCdI+tJXcNEZq5s/drdD2U+MbKHR2tneP0HxkQE+IkSQ3Mcd2UBABCuH9yegOuB2K4nGGoChVNcHT1LXddJ60UG20XtPkGTCgO1fURmG1kkz5EtNdO1zvXDYTt/S1ESdbyMNDiCM98DrUnkY= 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 1768534635317532.356193105163; Thu, 15 Jan 2026 19:37:15 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vgacn-0003L7-Dx; Thu, 15 Jan 2026 22:35:49 -0500 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 1vgacm-0003KO-B0 for qemu-devel@nongnu.org; Thu, 15 Jan 2026 22:35:48 -0500 Received: from mail-pf1-x434.google.com ([2607:f8b0:4864:20::434]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1vgack-0006SH-Pe for qemu-devel@nongnu.org; Thu, 15 Jan 2026 22:35:48 -0500 Received: by mail-pf1-x434.google.com with SMTP id d2e1a72fcca58-81e93c5961cso1305831b3a.0 for ; Thu, 15 Jan 2026 19:35:46 -0800 (PST) Received: from stoup.. ([180.233.125.201]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-81fa12b5c67sm683372b3a.69.2026.01.15.19.35.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Jan 2026 19:35:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1768534545; x=1769139345; 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=pUs/qizOln6k9oFq1nxTBHzlXvp7JuDaMx2406hQaG0=; b=FyWR5ZOr+7TnN5kojPdFKaSpc1ukKRns72mlhgutjuepZEQRB535P93k/DJIwtvcw3 SIeK8SBfcJkfpKURqaZpq/vnX/H5WmCNDzEnAG52oFURZq8J8J+XZFmN8by7dVd7+vbx 0d7T5C+S3vOsoPltJezJ34YlcuL93AdrtsijzzOYuCUXtZjq1JEXz5GdLtnJuwTETZ4+ vFkGJhkLqaaEHH1tWYHLWKicK2appiLO+EKR04qDKT34s7SREQYRx7UMeNEz7QlmnyR3 Nvo2kEywoGw9qBaSnZIf7HK8j89lRzRDt8tN94YkU0s0ZWCafJ61a/zJmpHWPDgdCyKe nzAQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1768534545; x=1769139345; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=pUs/qizOln6k9oFq1nxTBHzlXvp7JuDaMx2406hQaG0=; b=R/dKOQ1wSBUWcWrQVG9nu/Z1VhmypELYrw2gsel9djP9bl0HcqaNc5EMUV1jKbvASC KqubwHaY6H7bAfG3N8wTnkb1unpjUQ7M/QE9qKzMzCAz5RHJ3On99ZkbshGJbnQ0Kixe jwtQ5iBwz1drQJoqaYRER3p3tOVGDuLgKMz+1Q5pjAbvrwlaz/gRkIrdhu5Tm3NunVFN E/9SnlIrmkiTWnGxV3JYr5jKuJxgfQ9t7QTWSsSEuLveFBG+sowS0siRDfqpxdYrMGHo 0KaXMm0hOiYAFWIk5gvgW9ONwUD/07Rw2e4pHfeIIspor19dJa2So5n+0JWW7Vn/85Ct omdw== X-Gm-Message-State: AOJu0YzOeNCTU80GUiVWCzOSIuzN8SuJOJqFWOKVW1CZwsnlLirUmlk7 zdrOEG9+X1Hf0VcHAOAjwgQc+d77CeWZQESJ4e3DEG3rdcLML/SHw4XbiivZi5qmxfVD6nJiEKw HzmRCD778IA== X-Gm-Gg: AY/fxX6q36Yb7G6W3ve2jhPCVqqQc6nxOmiLU+ZCHmEdt3+9/WtHUtYlNNIWaU+JNW7 9YgnxNIWGpFRk3wSDigx6vF7Gakub0J9mjQRq3yf5lknRLSorqYYwh/HfhLl8Q1D6kcurNyVZgi k9GtvnozKnZKQzZKbFtp/1cRtCQdxM/Z0joMrH61pC+sYAG3/YeE4BO8MANpQSyc0Rz23Xsd3wo xsj8v+F7TDsfusEPa/xNt702hzgTMTKoMZ4laS+M1SR0052x+mAqCiUpEaKWQ491c1g0JihNsHZ khlK4upt/ziHxhLsIvGQQazRYXEPo/DPPbHLz0nJqDrKqs39ESDHyLn6P8ektWjHNhxBxBHbSC5 P3YG+rO7Te7jetPCsrPhnSCmOdOVyPqy/cBcEMz2lYYbQRiFR4vN7yYYc9m/7msEcocn+FwLuG1 wk9/ZOe58d5qcXxq+NYA== X-Received: by 2002:a05:6a00:1d0f:b0:7e8:450c:61a4 with SMTP id d2e1a72fcca58-81fa02fd38cmr1574137b3a.59.1768534545260; Thu, 15 Jan 2026 19:35:45 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: ktokunaga.mail@gmail.com, berrange@redhat.com, pierrick.bouvier@linaro.org, thuth@redhat.com, pbonzini@redhat.com, philmd@linaro.org Subject: [PATCH v2 39/58] target/i386/tcg: Drop TCG_TARGET_REG_BITS test Date: Fri, 16 Jan 2026 14:32:45 +1100 Message-ID: <20260116033305.51162-40-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260116033305.51162-1-richard.henderson@linaro.org> References: <20260116033305.51162-1-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 (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::434; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x434.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: qemu development 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: 1768534635858158500 Content-Type: text/plain; charset="utf-8" Reviewed-by: Thomas Huth Reviewed-by: Pierrick Bouvier Signed-off-by: Richard Henderson --- target/i386/tcg/emit.c.inc | 37 +++++++++---------------------------- 1 file changed, 9 insertions(+), 28 deletions(-) diff --git a/target/i386/tcg/emit.c.inc b/target/i386/tcg/emit.c.inc index 41bf047b8d..639a1eb638 100644 --- a/target/i386/tcg/emit.c.inc +++ b/target/i386/tcg/emit.c.inc @@ -2094,34 +2094,15 @@ static void gen_IMUL3(DisasContext *s, X86DecodedIn= sn *decode) =20 case MO_32: #ifdef TARGET_X86_64 - if (TCG_TARGET_REG_BITS =3D=3D 64) { - /* - * This produces fewer TCG ops, and better code if flags are n= eeded, - * but it requires a 64-bit multiply even if they are not. Us= e it - * only if the target has 64-bits registers. - * - * s->T0 is already sign-extended. - */ - tcg_gen_ext32s_tl(s->T1, s->T1); - tcg_gen_mul_tl(s->T0, s->T0, s->T1); - /* Compare the full result to the extension of the truncated r= esult. */ - tcg_gen_ext32s_tl(s->T1, s->T0); - cc_src_rhs =3D s->T0; - } else { - /* Variant that only needs a 32-bit widening multiply. */ - TCGv_i32 hi =3D tcg_temp_new_i32(); - TCGv_i32 lo =3D tcg_temp_new_i32(); - tcg_gen_trunc_tl_i32(lo, s->T0); - tcg_gen_trunc_tl_i32(hi, s->T1); - tcg_gen_muls2_i32(lo, hi, lo, hi); - tcg_gen_extu_i32_tl(s->T0, lo); - - cc_src_rhs =3D tcg_temp_new(); - tcg_gen_extu_i32_tl(cc_src_rhs, hi); - /* Compare the high part to the sign bit of the truncated resu= lt */ - tcg_gen_sari_i32(lo, lo, 31); - tcg_gen_extu_i32_tl(s->T1, lo); - } + /* + * This produces fewer TCG ops, and better code if flags are neede= d. + * s->T0 is already sign-extended. + */ + tcg_gen_ext32s_tl(s->T1, s->T1); + tcg_gen_mul_tl(s->T0, s->T0, s->T1); + /* Compare the full result to the extension of the truncated resul= t. */ + tcg_gen_ext32s_tl(s->T1, s->T0); + cc_src_rhs =3D s->T0; break; =20 case MO_64: --=20 2.43.0