From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from list by lists.gnu.org with archive (Exim 4.90_1) id 1kC7XC-0007FR-61 for mharc-qemu-riscv@gnu.org; Sat, 29 Aug 2020 16:33:10 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:39404) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kC7XB-0007FJ-4b for qemu-riscv@nongnu.org; Sat, 29 Aug 2020 16:33:09 -0400 Received: from mail-pj1-x1032.google.com ([2607:f8b0:4864:20::1032]:38900) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kC7X9-0000nZ-HB for qemu-riscv@nongnu.org; Sat, 29 Aug 2020 16:33:08 -0400 Received: by mail-pj1-x1032.google.com with SMTP id ls14so1083060pjb.3 for ; Sat, 29 Aug 2020 13:33:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=bneXAIvgUKA99+pRDoxmvVUuXckT4RdsTwV/ons77qg=; b=fyEWRY9l77tmd4vQxkl/BkAk2amfQWFuXfp3By7LYIj+alkYbkVgC87T8HqFx5m9Ko 1/oK2CecWmeblP5WhJdMFSwh/rN0YRZ8VnkOLXm8HnqH2jx5qVdB6w/4dOsAynSyD35g 8qG+Y9hGaiGQO2oiyHMFjRzz2ICawmfbty6ZOzqiyNuaFCaSDAiVwXqeuLazsQHwWT+G TyC9pav6ofBJCZsSqOlIdar+ojcakbP9qpLaO0u5iPiVQSG/PRhgoxc81CDdnW1AKZKm SaMJVvSrNNbJnN8z60D8E/ucqKlig1CwJ4jNbf9/SCyt7rJ8eVp5ASXc+Qso2FxbvT1x 5ANA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=bneXAIvgUKA99+pRDoxmvVUuXckT4RdsTwV/ons77qg=; b=TvwxvezxCsy/wIuL7joiCZ5T8jT2+fCTQA2GgP1N475cvHGkn0XrRLwekLkYCWBTf8 r09faKLpQL+kRkuv3xk91HQeNvnRnPe0LG5oV+7/kudSfqEPbRoh57Cd5e6C0DtS7Y2S RpuKqv7HF0MzK/xir7W1YtOy7hXmkMbFTyIYtVRfTSvKmE3cfwBe3ix86wmBD22XffYG vDg2ZLU5+tirgK/1Zf8ZAhjhBTLOw1M3kZqDEUDx/J3oMgHPgel+PHv+rUTkBzqQB1t3 pPOVYvkiwAIti9Egu/H8zzOuHgxU639Kwwjn/mxc8EOmKQRMVfmnS0zevjRyxtg5pHEU C73A== X-Gm-Message-State: AOAM5328eL+r88PIa2kgfGjMFURyQ1CQIWByN8WRCxMq9LYZjL8oWeyG 5eQjHHMoynddvJGQ/ovKshzctg== X-Google-Smtp-Source: ABdhPJyeqiRZ3fS8WDzlzw9MSRu8hJTJ1aUHnDbCHrOS/E1Wvm6HOYz1IzpVJFu8sr1KyQx26iKqUQ== X-Received: by 2002:a17:90a:bf8d:: with SMTP id d13mr4346326pjs.100.1598733185871; Sat, 29 Aug 2020 13:33:05 -0700 (PDT) Received: from [192.168.1.11] ([71.212.141.89]) by smtp.gmail.com with ESMTPSA id o15sm776881pgi.74.2020.08.29.13.33.04 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 29 Aug 2020 13:33:04 -0700 (PDT) Subject: Re: [RFC v4 53/70] target/riscv: rvv-1.0: floating-point slide instructions To: frank.chang@sifive.com, qemu-devel@nongnu.org, qemu-riscv@nongnu.org Cc: Alistair Francis , Palmer Dabbelt , Sagar Karandikar , Bastian Koppelmann References: <20200817084955.28793-1-frank.chang@sifive.com> <20200817084955.28793-54-frank.chang@sifive.com> From: Richard Henderson Message-ID: <96b9fa44-5a1b-2ac0-04ae-fa4d2857096e@linaro.org> Date: Sat, 29 Aug 2020 13:33:03 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20200817084955.28793-54-frank.chang@sifive.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2607:f8b0:4864:20::1032; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x1032.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: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 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, NICE_REPLY_A=-0.809, 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-riscv@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 29 Aug 2020 20:33:09 -0000 On 8/17/20 1:49 AM, frank.chang@sifive.com wrote: > +DEF_HELPER_6(vfslide1up_vf_h, void, ptr, ptr, i64, ptr, env, i32) > +DEF_HELPER_6(vfslide1up_vf_w, void, ptr, ptr, i64, ptr, env, i32) > +DEF_HELPER_6(vfslide1up_vf_d, void, ptr, ptr, i64, ptr, env, i32) > +DEF_HELPER_6(vfslide1down_vf_h, void, ptr, ptr, i64, ptr, env, i32) > +DEF_HELPER_6(vfslide1down_vf_w, void, ptr, ptr, i64, ptr, env, i32) > +DEF_HELPER_6(vfslide1down_vf_d, void, ptr, ptr, i64, ptr, env, i32) You shouldn't need any new helpers. The fp scalar argument can be passed to the existing helpers. The manual doesn't explicitly say, but I assume the fp scalar needs to be nan-boxed (for sew > flen), or checked (for sew < flen), just like the scalar move instructions. r~