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[122.150.204.179]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-24905da4784sm39551685ad.90.2025.08.29.20.39.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 Aug 2025 20:39:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1756525177; x=1757129977; 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=t71Z0EMt7VoYt+Js0tvLpYVjDl1AThaQamaO8gjGV1k=; b=LpeH/VJ7SbJ3TSFXtL/M/wr3vQ30FDsQbZpIwUMrSPhk8Hn8Srmq/IpBotKzphyDtJ r7PQawLa1TlF8BdSuiOSmNeOHUim6Z4mIfq8xKE9HLYIUDk2On+gVuAE0di3Fw0TVrzQ oeBBo2MZe2S1lZYQS6v8jFSNn/g9kiacWs/NRpXh2AFaV3MSNzPpGMnVLKhinunoRZBJ /EVHYWB7dr/h9xu0GRbFqcLHWJ6sggUMn5fclN7PL91lgBts1Tip9dyRzQJBryhyPqXA JVZnu92l8CiMyNB064EtMU6PI8mYOhDh6da677nMMmvmRXYmjVJLq7Oz2yW7yfnaGlT2 YoEQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1756525177; x=1757129977; 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=t71Z0EMt7VoYt+Js0tvLpYVjDl1AThaQamaO8gjGV1k=; b=aEM4S88hY/8W2AHtNvFnWhw1bC94bT3tMOX5xOmeBvX6NbBhdRuoLXfzoXnUslbsT9 J91XYLesCGtypdvIl7IigfUbuu8wt9MbEzIBnwubXn1rw6FEU8KGsQrYbYsFh1gL7fp2 SGIZH4J1Ec8ley9rB+m2aX+ceiRKuawZ8yM3ghJGCmUiG21etfv/6p8gDTNBUnXHr1a3 1cYLQukKhn5i6lSk+BPdcGM1/oA/fM9qheomm+xfvq3AQ3KuY7kGiCZzwNFGopwCm/qA mYV2u/VumQ9lU32I/nrWvLjyKkcEAd8ryDuzAnTHO6ir3VmXTIvXJOvNNfn6jXAlESiO 5AJA== X-Gm-Message-State: AOJu0YxTjljk36bUPpHFdf5SrBuCK2vbRjB2POeyByNdEPtakJsXeyQ5 dNNEVjeoidzuoJV4JlL+VSywH8mPbvbWVMNnT6yflMOxuVyNSlM4ZCHz/tP1ABqhL5gS6a+60ny 8sspbTV0= X-Gm-Gg: ASbGncsTDKWpOtpQlsX7sdLTtEzS7Bhg4030xvltSOXhhdy2h66xBQAA91D/nRkKrI5 rnMJKRCTy5b8u3N4ljRRS0pvekCvo1ZA6gU1GQlFVjQxgtGBN5uwApiwWwJspEd/DgJTaj5zRPs EuLuY5vtVynRq5BXTUnPhzJT9p/WnBb8jZxnVwolBQLCR8sb+7TOHEWPRSZUBVYrlnVTlED2LJW ReVV16e1arlSKdx3Vp+9m32icYMgs45GNxYWzono858X6QZyp7Bbb2gu9aWS2EMMGq1eHG2h9+x gnbDJR8DYjlj2ePgBqcLLum+5D9DDSNt8Hp1ZVPxmjlNQ/QDzKCyDnItBZq5pkDvuYQsb3APPi9 sDedVxM5MEObs9v0dR47RMrNVp8531rYTr61AjlnThY6qmOBlftay0LLGqaAtMoE= X-Google-Smtp-Source: AGHT+IGiN8QzMRDBAz8mg1IGPu+pQXRsz9MvTW2PX48TdeXXDJ/AzfO2QMZqOCEYHA4+bdyB5UzbIA== X-Received: by 2002:a17:902:d502:b0:248:ffb6:5bce with SMTP id d9443c01a7336-24944af020cmr12329765ad.22.1756525176944; Fri, 29 Aug 2025 20:39:36 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Paolo Bonzini Subject: [PATCH v2 2/5] tcg/i386: Expand sari of bits-1 as pcmpgt Date: Sat, 30 Aug 2025 13:39:23 +1000 Message-ID: <20250830033926.372955-3-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250830033926.372955-1-richard.henderson@linaro.org> References: <20250830033926.372955-1-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::62e; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62e.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: 1756570384471124100 Content-Type: text/plain; charset="utf-8" Expand arithmetic right shift of bits-1 as a comparison vs 0. Suggested-by: Paolo Bonzini Signed-off-by: Richard Henderson --- tcg/i386/tcg-target.c.inc | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/tcg/i386/tcg-target.c.inc b/tcg/i386/tcg-target.c.inc index 088c6c9264..4cd5d4276c 100644 --- a/tcg/i386/tcg-target.c.inc +++ b/tcg/i386/tcg-target.c.inc @@ -4357,6 +4357,12 @@ static void expand_vec_sari(TCGType type, unsigned v= ece, { TCGv_vec t1, t2; =20 + if (imm >=3D (8 << vece) - 1) { + tcg_gen_cmp_vec(TCG_COND_LT, vece, v0, v1, + tcg_constant_vec(type, MO_64, 0)); + return; + } + switch (vece) { case MO_8: /* Unpack to 16-bit, shift, and repack. */ --=20 2.43.0