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[174.21.81.121]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2076afe9c61sm5635915ad.231.2024.09.11.19.41.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Sep 2024 19:41:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1726108880; x=1726713680; 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=d3AYwzPdHoHu5Aos81gdCbKTZ5PvIr4Bh9qOHvqoApc=; b=Rd8TeEjWqzwKADlbshioFVUe2NjnKi/9TItdr67iKodPhsAHjAwGR+aRBVBRZelHiA CiGcrDLp3g33nbX/Lptd2mp9UWRDl6u/Tzr3UR/WndO9hwYSQ5w1xrjQ52kDUVU8JtlW 2byd6XmF++NJZ0FrYBiRdF0VIKyF7xIrQwhg0FZbi0XkDr4uAaD5kM+BJdL7FV/+EfnV U3+8As4aN4SRY+S8Rm+jMOp+Cm0YcdrwER0lzGPqhIR5oTqL9KHy7fLSokkdYURL+nqT XPm1iHitZidbzIvRGhqNwMIceySQ1cTA/Hg7rzyyEVBmpQMdkTYSeV2wFsbuPWxyqiyV yxxQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1726108880; x=1726713680; 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=d3AYwzPdHoHu5Aos81gdCbKTZ5PvIr4Bh9qOHvqoApc=; b=CtLptHNkxr2kq+ovn6vhvtQR5uIZG9FiE2gyaRKCFJ2TKoCWXoH2P3HR4POvc79NUV uDQr7zfrWgWeXX3D4NkkiACN9LBUHiyOk5IWZS11RPOvCHSO1Cd72XQL1uEt+6oS5ulT Al2KT1GSNVgMcb5r7j9+H1lAcZjRJZAuZRDS/lNWvFYezHs4kx79pf1wn9/e1fMHbO33 hwS7D/dRZOMJCmyZ0ShFcDChgZnCi0AkSvAUX5IL6WBQIZZLjtgWLYA5W4Wwgi2edcGJ tBil0yflDaT8AqljFtTiKjkKz9NkiGVt/y/i6jxb4wnupua49myW2SE7eRP0jzNCqsYd w9Lg== X-Gm-Message-State: AOJu0Ywg/p6IqHvPItDQyRpI5xo5qVW/WkCE6DrZNf9emGsMShn41TOC JHl9RheZ9Ym2y1mZb0UDL1trRFEMCzTXZag+rr+LA7F2NUfRwC8elZ4/v1YiKI5gLcRCCKa9MAg c X-Google-Smtp-Source: AGHT+IGpAslnmdfyBv4B2dXg7q51gDKgk891akWC7lkjFjMeRfKCA6yLmdGBOCQGgMPZr8O+8fM+gA== X-Received: by 2002:a17:903:1c6:b0:207:7537:c651 with SMTP id d9443c01a7336-2077537c765mr9232715ad.45.1726108880473; Wed, 11 Sep 2024 19:41:20 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, Peter Maydell Subject: [PATCH v3 04/29] target/arm: Use cmpsel in gen_sshl_vec Date: Wed, 11 Sep 2024 19:40:49 -0700 Message-ID: <20240912024114.1097832-5-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::633; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x633.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-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1726109131383116600 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 | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/target/arm/tcg/gengvec.c b/target/arm/tcg/gengvec.c index 3edbf3a262..c5fc1b6cfb 100644 --- a/target/arm/tcg/gengvec.c +++ b/target/arm/tcg/gengvec.c @@ -1160,7 +1160,6 @@ static void gen_sshl_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 tmp =3D tcg_temp_new_vec_matching(dst); TCGv_vec max, zero; =20 /* @@ -1180,16 +1179,15 @@ static void gen_sshl_vec(unsigned vece, TCGv_vec ds= t, /* Bound rsh so out of bound right shift gets -1. */ max =3D tcg_constant_vec_matching(dst, vece, (8 << vece) - 1); tcg_gen_umin_vec(vece, rsh, rsh, max); - tcg_gen_cmp_vec(TCG_COND_GT, vece, tmp, lsh, max); =20 tcg_gen_shlv_vec(vece, lval, src, lsh); tcg_gen_sarv_vec(vece, rval, src, rsh); =20 /* Select in-bound left shift. */ - tcg_gen_andc_vec(vece, lval, lval, tmp); + zero =3D tcg_constant_vec_matching(dst, vece, 0); + tcg_gen_cmpsel_vec(TCG_COND_GT, vece, lval, lsh, max, zero, lval); =20 /* Select between left and right shift. */ - zero =3D tcg_constant_vec_matching(dst, vece, 0); if (vece =3D=3D MO_8) { tcg_gen_cmpsel_vec(TCG_COND_LT, vece, dst, lsh, zero, rval, lval); } else { @@ -1203,7 +1201,7 @@ void gen_gvec_sshl(unsigned vece, uint32_t rd_ofs, ui= nt32_t rn_ofs, { static const TCGOpcode vecop_list[] =3D { INDEX_op_neg_vec, INDEX_op_umin_vec, INDEX_op_shlv_vec, - INDEX_op_sarv_vec, INDEX_op_cmp_vec, INDEX_op_cmpsel_vec, 0 + INDEX_op_sarv_vec, INDEX_op_cmpsel_vec, 0 }; static const GVecGen3 ops[4] =3D { { .fniv =3D gen_sshl_vec, --=20 2.43.0