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[174.21.149.226]) by smtp.gmail.com with ESMTPSA id b9sm9407364pfp.12.2020.05.04.12.23.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 04 May 2020 12:23:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=XhxyK+kkO2Y8hUw/ZAxBXnrBF6bTSYi2MZ+Sv+Ux6CU=; b=n6hVWoV2XE3Zct0JzbqbToZJUuMcwwHOspHkh5EbtXXix57aW+YMKjqKusbz38H+C0 jB3ecQJEEBlyXIBjW3RHIpsdcCbaQKFTK50dEyhhuw+7oOi5GuvkThAkKld1LWQJJWJV 8QSdp9z0IlRP0B3sIfBysJ131SAyeKIwpBle3m92NThb445hF9zWl6F/R+vE0G8uggq+ a7Wcg4FR5zhk9D0Qmuy2NJuHzuFSkp+TlLJfAs/kW8wsbsvvQ0SifPfJ6mtoRNdvdStx VftGgwDf536F1dMGbrkBd4ryp0iEEjtLLv/TJ7ovEbSrwWXEMeim6yE1iWbknVKrJLxn ZjCw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=XhxyK+kkO2Y8hUw/ZAxBXnrBF6bTSYi2MZ+Sv+Ux6CU=; b=hq8SUUu3SPpwKLhDD5FI4/9aFjEPR+zDVBwaIf3cD6Zt8b+1Rl4TD31bNdYfIhEktj LBNbS9n7Y/7DDX5Wt5HV3Ed4V7c7CvCR8A23KlHvu8zJj2W2cl5vHYhbavOwgQ4u1ype 1gwFaLS3polsFU2LqbQ4CF5oXSi/kxLvNOfhLIjHzc0NFRt5NHp402C0d076EaVqb8K/ hSwEwxYQvyTdfeBOAGGJO2/WcD+SSmJIVIw5GQk6MUkR0sswoqhmLwtvIttd6Vh5YowD bXmBc+9XvtbnFkYpmMvvhEuHYZG7a6P8MmL0O77BciZ3IvZJBOmHugR2iFRnRhXHZCLq UkBA== X-Gm-Message-State: AGi0Pub5Ct0v5t158LYRShNqxATqUrQexCAgKC+1lJXvEmlox9fyVrhU 6VxFBebKa/Y9E+LPt5yvuT8Be6Chy+I= X-Google-Smtp-Source: APiQypL9g3ME3tvyCdPuPuQI5PyMFWIYOrZgfy3u/DnhUzKVaQKGoapSjGdThVGywEi3dxzdc6E/Ig== X-Received: by 2002:a63:4ce:: with SMTP id 197mr462934pge.240.1588620228563; Mon, 04 May 2020 12:23:48 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v3 2/3] target/arm: Use tcg_gen_gvec_mov for clear_vec_high Date: Mon, 4 May 2020 12:23:43 -0700 Message-Id: <20200504192344.13404-3-richard.henderson@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200504192344.13404-1-richard.henderson@linaro.org> References: <20200504192344.13404-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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::442; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-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_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN 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: , Cc: peter.maydell@linaro.org, =?UTF-8?q?Alex=20Benn=C3=A9e?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) The 8-byte store for the end a !is_q operation can be merged with the other stores. Use a no-op vector move to trigger the expand_clr portion of tcg_gen_gvec_mov. Reviewed-by: Alex Benn=C3=A9e Signed-off-by: Richard Henderson --- target/arm/translate-a64.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index a896f9c4b8..729e746e25 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -496,14 +496,8 @@ static void clear_vec_high(DisasContext *s, bool is_q,= int rd) unsigned ofs =3D fp_reg_offset(s, rd, MO_64); unsigned vsz =3D vec_full_reg_size(s); =20 - if (!is_q) { - TCGv_i64 tcg_zero =3D tcg_const_i64(0); - tcg_gen_st_i64(tcg_zero, cpu_env, ofs + 8); - tcg_temp_free_i64(tcg_zero); - } - if (vsz > 16) { - tcg_gen_gvec_dup8i(ofs + 16, vsz - 16, vsz - 16, 0); - } + /* Nop move, with side effect of clearing the tail. */ + tcg_gen_gvec_mov(MO_64, ofs, ofs, is_q ? 16 : 8, vsz); } =20 void write_fp_dreg(DisasContext *s, int reg, TCGv_i64 v) --=20 2.20.1