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[81.2.115.148]) by smtp.gmail.com with ESMTPSA id s20sm356251wmh.21.2020.08.28.11.34.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 28 Aug 2020 11:34:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=LATnJEWO7P/MKdEPBDLegkR2imAlvCK9m77w5J9GprA=; b=OfaXH9avmFC+6lAjPrkqOaiZKPTTZ541dGcFZJqvbazLttMGcIvUw2TkvS9OsmpYBR XW+pOXJJeOZeud5bIzVjdZ+tdaCh+qkopRFCdYZAji8+6x4WMKl/Vh0bXzfAfjlP75sa IhYlobyZfkY5leMiZHwRTFcza3pFxXytoqe8FBAgLnh5mp0GUkyrFMHd3aVfSRO0l9ll 7tgFz7B2dQglQWxtXVkYoKGVg7SEYaN9fFD3Wkx62f952OqRT6RYxapO8BCtNW0oxkeB oKM7cEfl5/yD8tTUWNmGKQyspHXzZxAOdABGWacG53xdlqDN7k3MHLcVlNpEA8xD92K3 dbIA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=LATnJEWO7P/MKdEPBDLegkR2imAlvCK9m77w5J9GprA=; b=BFrW4eGdrnyqOg07AigDeqn/5fLdg/OG5C56vDw1OEBgN49dBUrGV9IacZGTJTLPFA 5WtZ3HHmcaQRcCpSeTws3WiAqoRfrwe09DYPK7SCoh0kVyZ7DGKH+I8FhTjv5XO38gRp I2Ox3RpwY3XBUcPWAtHQu//yahqqzIUFpt/f61NPKO2+SWiUEzxnL6KUrJWvjgtPGaoe TYHlUKYBGuKvSDf07C3PyJAdUAbUIZONAFeQMr44sgZgOrw3SpKxRBXtzSDXUxJSIPYP w76M556ssOxcNNGj7mYWGViCZOuf+BmoYDZknru5XxC87A08p3/myn/56yVwM4Me2K5K BwTg== X-Gm-Message-State: AOAM53214FICpwkmyb6ZlD5B4MaHFfhkya96EtgzLgztf7HCEV9b2478 wHb57VnJ2eROe8WoV4MdqlgsKDtykhaWivmn X-Google-Smtp-Source: ABdhPJwS46x2U17pP2vR2CGDdvtaQC1o0p+/oztuBv5rLOU64ZhU4JdTWbPPhDHU8BgSEp3IhZMJRw== X-Received: by 2002:adf:edd0:: with SMTP id v16mr267891wro.271.1598639666902; Fri, 28 Aug 2020 11:34:26 -0700 (PDT) From: Peter Maydell To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Subject: [PATCH v2 25/45] target/arm: Implement fp16 for Neon VABS, VNEG of floats Date: Fri, 28 Aug 2020 19:33:34 +0100 Message-Id: <20200828183354.27913-26-peter.maydell@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200828183354.27913-1-peter.maydell@linaro.org> References: <20200828183354.27913-1-peter.maydell@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=2a00:1450:4864:20::442; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x442.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. 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: 2.1.23 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) Content-Type: text/plain; charset="utf-8" Rewrite Neon VABS/VNEG of floats to use gvec logical AND and XOR, so that we can implement the fp16 version of the insns. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson --- target/arm/translate-neon.c.inc | 34 +++++++++++++++++++++++++++------ 1 file changed, 28 insertions(+), 6 deletions(-) diff --git a/target/arm/translate-neon.c.inc b/target/arm/translate-neon.c.= inc index 872f093a1fc..a1bf8dcee09 100644 --- a/target/arm/translate-neon.c.inc +++ b/target/arm/translate-neon.c.inc @@ -3741,22 +3741,44 @@ static bool trans_VCNT(DisasContext *s, arg_2misc *= a) return do_2misc(s, a, gen_helper_neon_cnt_u8); } =20 +static void gen_VABS_F(unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs, + uint32_t oprsz, uint32_t maxsz) +{ + tcg_gen_gvec_andi(vece, rd_ofs, rm_ofs, + vece =3D=3D MO_16 ? 0x7fff : 0x7fffffff, + oprsz, maxsz); +} + static bool trans_VABS_F(DisasContext *s, arg_2misc *a) { - if (a->size !=3D 2) { + if (a->size =3D=3D 1) { + if (!dc_isar_feature(aa32_fp16_arith, s)) { + return false; + } + } else if (a->size !=3D 2) { return false; } - /* TODO: FP16 : size =3D=3D 1 */ - return do_2misc(s, a, gen_helper_vfp_abss); + return do_2misc_vec(s, a, gen_VABS_F); +} + +static void gen_VNEG_F(unsigned vece, uint32_t rd_ofs, uint32_t rm_ofs, + uint32_t oprsz, uint32_t maxsz) +{ + tcg_gen_gvec_xori(vece, rd_ofs, rm_ofs, + vece =3D=3D MO_16 ? 0x8000 : 0x80000000, + oprsz, maxsz); } =20 static bool trans_VNEG_F(DisasContext *s, arg_2misc *a) { - if (a->size !=3D 2) { + if (a->size =3D=3D 1) { + if (!dc_isar_feature(aa32_fp16_arith, s)) { + return false; + } + } else if (a->size !=3D 2) { return false; } - /* TODO: FP16 : size =3D=3D 1 */ - return do_2misc(s, a, gen_helper_vfp_negs); + return do_2misc_vec(s, a, gen_VNEG_F); } =20 static bool trans_VRECPE(DisasContext *s, arg_2misc *a) --=20 2.20.1