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[174.21.81.121]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-20710f35d79sm35753305ad.288.2024.09.09.09.22.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Sep 2024 09:22:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1725898965; x=1726503765; 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=Pgs2JNZ4S/gh2gLi/4fYZOmaEAbxAmjogm4YgNJtH7U=; b=myJsrxkgrITSrVdTGraNo/zRP6Wzdk1GYEOLeTW26JTIx20X4/fU4SWcdCubb6oxOK 8LwwOIIIoob/yJMb6Cv6Q9FzV3HX5wEcKrcEkt3NfSJIF7OsWzi8xXLocnRkompr58oF y6JWm/4/ZZHhf5XbZwMznkRlqEWUQaH+YFtAoLGSDWr5ZT/e+y2GFHQZDvb3oT/WU5bi wYgVxT4eeKwaRTK41WhZc8A4UqPFo2A98UOZ/thUAFAI8twE92xJZiG8EppAalfBOR5S A/KsgkZGe7uwMGGBlJriigQLXf6SZSPx+87x2TAW9uioj4+o/1LOBs/gNkCW5ZwOrZV6 8JUA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1725898965; x=1726503765; 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=Pgs2JNZ4S/gh2gLi/4fYZOmaEAbxAmjogm4YgNJtH7U=; b=wGCpwnFUDLcjYpyyFJBx/jkCrXaeoEUIH6zX2bL7RdyqPBA1WDkZBD7S7YiagZkmgQ ufnwq/Q7A/76NaeA7z6Zcen200tSddWlS7W9qF+JRw4iq72QNYGOtLBaDEClQ0vLOLd2 sGVTK7hCur3oxAiJfQ8dqPhu3x22pXqYK+85Oe0ry3Q00SE07SeB0jdDLSwIz21LEWPW KvVBmTqxLsbrf00qQDkeEIKf0KpKtkaFVqR+JXJURWTNFpAd935DN3cOS5b4OCcJiGf/ sF74A57mbAZPda8jB1QMIkZM2PLQ6ChOaEmO5KsRKiUKoudSl34SisU8ls9ppoK7IImZ nWsQ== X-Gm-Message-State: AOJu0Ywu2xbaihN3LOvXi2eQdgdEgLNkUautici87dKVeVJXhe45zcIF defnkgqoxg6dcmDaPQbNDJRLFrdqdT6F7/ikIyRjtaQe/T7lkSo660qr+h0gy9CvbxdNJHdzU1j K X-Google-Smtp-Source: AGHT+IFU3opkTIK031qhvt4r3GAJEOfqpCsBv+QNCj+Mg9N9WLx0aEk69cVIxU66PYMEtwBk4FGOJg== X-Received: by 2002:a17:902:f644:b0:205:937f:3ac6 with SMTP id d9443c01a7336-2070c07471dmr115287605ad.1.1725898964766; Mon, 09 Sep 2024 09:22:44 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org Subject: [PATCH v2 03/29] target/arm: Use cmpsel in gen_ushl_vec Date: Mon, 9 Sep 2024 09:22:13 -0700 Message-ID: <20240909162240.647173-4-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240909162240.647173-1-richard.henderson@linaro.org> References: <20240909162240.647173-1-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::635; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x635.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: 1725899174779116600 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. 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