From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ej1-x62c.google.com (mail-ej1-x62c.google.com [IPv6:2a00:1450:4864:20::62c]) by sourceware.org (Postfix) with ESMTPS id 4A4093858C41 for ; Thu, 15 Jun 2023 09:18:31 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 4A4093858C41 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-ej1-x62c.google.com with SMTP id a640c23a62f3a-977c8423dccso115992166b.1 for ; Thu, 15 Jun 2023 02:18:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1686820710; x=1689412710; h=content-transfer-encoding:in-reply-to:from:references:to :content-language:subject:cc:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=OADYv4W0KTqYY6gflm2owwfWsRmozaPBd9gPKT/Zcto=; b=AMLb8s4ZABuoxXG34+YWgc6qGIYMO7GK5ipMZosv+MmscG0ujagk3a0FfBNrcyCCJb ccNhOt9h6Ktd2nYJtlvS69ZePn/Q8S+XvL1dtEt1dGz/R00oiqLqAx2oXwuPfITwafQw aX5gqbuyTcM3MozU0GGcIyoUS+Ibkx2zt5/92IqSCYRriY0+I52Dfp/otjX5ul0HAY5K +mHcpOPbs2cHsssVyamO7RDrRICsM+TRBy9vH3W8x1hUoQ/FSlK88UDpM+T0teHSajdj UY7ktfsIa5usLKzhZl40V6KRywmW5e5FlYwtQ7V/XfkbM4kVkfj+uP8xcvCsoh9OYhvV v0Fw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686820710; x=1689412710; h=content-transfer-encoding:in-reply-to:from:references:to :content-language:subject:cc:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=OADYv4W0KTqYY6gflm2owwfWsRmozaPBd9gPKT/Zcto=; b=TC+Hq11DGpl73lt6lBtk6Em97OeRiuxmsDg1JVhKg4M90To8rGcgvpFIbo7FymsGns Yril2X4JIlrNxLiSH2Opp1LdzA3MP2MEHGXchfbvnM+vMJg85a3C8GA4vmpZP3ETvdDR /Zf9sSiQpeKsjdyBLN+wImvJV3xFMDY7XMb9LFuKXbjBj/V734xXmK90SiQw5TANjCSN lzmnSYN+NA3QML4Ah5NpiDXnDoSpj15aXZQcggPCxXliq5pcd0IUhLamN2metPZmJmWq 8t+bi6avnvkVdl6PtefjgtP/wSsbgw7MydGvvb+OqXWi8AD5f9dNdgPtQFDrNMdinHEe abaQ== X-Gm-Message-State: AC+VfDw0oqkcthE6KGYFLlmwoRnrvn82Xf6lp85JT1vYiesZG6KYQTjV QDnZk1sarYPEbP6vl+ue9ps= X-Google-Smtp-Source: ACHHUZ5w1DKCjMumbUklXhSCA3IkLDzgCbmg/9bYkb745GoKS/XZf1dFDkMEMSYo5NRbIvsj+b7Wgg== X-Received: by 2002:a17:907:d11:b0:96f:9cea:a34d with SMTP id gn17-20020a1709070d1100b0096f9ceaa34dmr4536132ejc.21.1686820709550; Thu, 15 Jun 2023 02:18:29 -0700 (PDT) Received: from [192.168.1.23] (ip-046-005-130-086.um12.pools.vodafone-ip.de. [46.5.130.86]) by smtp.gmail.com with ESMTPSA id k9-20020a170906128900b00965ffb8407asm9056548ejb.87.2023.06.15.02.18.28 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 15 Jun 2023 02:18:29 -0700 (PDT) Message-ID: <93123844-a2a8-90ab-d47a-6f859fb3a8d6@gmail.com> Date: Thu, 15 Jun 2023 11:18:28 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.10.0 Cc: rdapp.gcc@gmail.com, "juzhe.zhong@rivai.ai" , gcc-patches , "richard.sandiford" , krebbel , uweigand , linkw@linux.ibm.com Subject: Re: [PATCH V2] VECT: Support LEN_MASK_ LOAD/STORE to support flow control for length loop control Content-Language: en-US To: Richard Biener References: <20230612041438.272885-1-juzhe.zhong@rivai.ai> <1A27F1FE56A91998+2023061516473052116877@rivai.ai> <7e31f226-476a-75d1-6a0f-13fa9134e311@gmail.com> From: Robin Dapp In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-3.5 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,NICE_REPLY_A,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,TXREP,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: > Meh, PoP is now behind a paywall, trying to get through ... I wonder > if there's a nice online html documenting the s390 len_load/store > instructions to better understand the need for the bias. https://publibfp.dhe.ibm.com/epubs/pdf/a227832c.pdf Look for vector load with length (store). The length operand specifies the highest bytes to load instead of the actual length. Regards Robin