From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-io1-xd2e.google.com (mail-io1-xd2e.google.com [IPv6:2607:f8b0:4864:20::d2e]) by sourceware.org (Postfix) with ESMTPS id 3CC433858D1E for ; Tue, 7 Nov 2023 00:52:36 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 3CC433858D1E Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gmail.com ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 3CC433858D1E Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=2607:f8b0:4864:20::d2e ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1699318357; cv=none; b=M2hv0U4pOYrXQwzgHPQWktz8IM4/r6tN/bTdDsEBOJ7fDyCsHqBzHhjqSBFK+93KsVhjS0dmIoq67B9h+QmFxdluiQFABSXmb68rjJ1gcS5G11D4bOZLmFXGMGsgl3Li79P7DyKFnUaT5JCfTvKKtriECWBKipyOOYxTPZF2KZ8= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1699318357; c=relaxed/simple; bh=nxnnHwvz0ix6NSd+bEp3g4P1AgWoPHLBhGaezasP+AI=; h=DKIM-Signature:Message-ID:Date:MIME-Version:Subject:To:From; b=TRZ203bbl25DAupv1W5oDJPgQhu7NTkVto7q08+bNvRL9l6eiPAB5QMo8Sk3P6fEVwc65+RRePqDirhdOVfXKcxRS/0YX00O46LCU3YKnt7rFGU+WGCF3UkWokwqb9DijL03laKDUUuPti676bfYwEr17ua3VaPwhdEMxgi2UxI= ARC-Authentication-Results: i=1; server2.sourceware.org Received: by mail-io1-xd2e.google.com with SMTP id ca18e2360f4ac-7ad501cb1f9so68897239f.0 for ; Mon, 06 Nov 2023 16:52:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1699318354; x=1699923154; darn=gcc.gnu.org; h=content-transfer-encoding:in-reply-to:from:references:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=ajhYHjYLfAxbbzho/1m4we2mKtcdcjkvJ4hkeyCuZiY=; b=M3FSxtX5Fxdz2DQmcMCLgRM7DzYzzkRMAufhlcM6Ly5Y2rpKrq+gxGZq2SKcuCaptL vEGQDjilhOMlJCfZGdFgtieZJzXOnzC8KMoswJ/G5gYN6iOJAuQq1K0+xCE1vlle3I18 6Tphn2GQpCrg5OcLsn8jS1Mg3zDEzsXPe51eQyb2nL325F0ZBwgHkfJqtLKuYTMBucdZ nZP/aPOwA0ZKQOlshQx8yBfxxasQtgGC6BjUTjiTKAGj+d60UnZfcoMbX7xGhm08LvY1 2DzmZxTJ2x9uWCa8YA/m+wsk14erc7dhdNt1VBp78mqYGNdXJr5fctW+lBLxMNDNzTl/ WRDQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699318354; x=1699923154; h=content-transfer-encoding:in-reply-to:from:references:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=ajhYHjYLfAxbbzho/1m4we2mKtcdcjkvJ4hkeyCuZiY=; b=U229B2wiQX1OKI56muXML/FTUJf9rim7DHaMZgBVeKtPVU8LqOqhKyxxqfjiFmUF0v 6FHS7nVRWcjGUW25gge1lxoBkqEr4H+RAq03DUywi3Z4Y8yW3MyVXvKhYUUOq5uFY4Rq hsKm/FWJbeCU/WuwUFdOZm4LlFHuyzw2ng64ebnarXP3WirGNdFtIFvuXL0GYQrfxPXD TFjdT+kfnuMhBSzzyZ7SZbEpON7ZXxo19jkQNCJcruS5K3sCuaALtcD+w7vL4eQ1+MoY 76MbGEZpC4Xlk5ZK1zWA2v1WlqOsxXxD2/bcqGZw9+T5Hr5Z2BggZFa8YqZrLzHxUHea wQWA== X-Gm-Message-State: AOJu0YwST97mgMPNA7CZl7yrBh6ik/e0mQL142NVUejObfCmbTuj+qqY Yyk22AXfas6q8mBaBTStcynOE+o150xIaQ== X-Google-Smtp-Source: AGHT+IEmaLOgkYh6OnWPA+0FcKeHFIX7QyL+EKt81VtkPLh1kltY0NYs4bvImPU5TCKoqhzxj0E0Bg== X-Received: by 2002:a05:6e02:198b:b0:359:64af:c6e1 with SMTP id g11-20020a056e02198b00b0035964afc6e1mr1744679ilf.9.1699318354320; Mon, 06 Nov 2023 16:52:34 -0800 (PST) Received: from [172.31.0.109] ([136.36.130.248]) by smtp.gmail.com with ESMTPSA id db8-20020a056e023d0800b003596056a051sm2828770ilb.71.2023.11.06.16.52.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 06 Nov 2023 16:52:33 -0800 (PST) Message-ID: Date: Mon, 6 Nov 2023 17:52:33 -0700 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 05/12] mode-switching: Simplify recording of transparency Content-Language: en-US To: gcc-patches@gcc.gnu.org, jlaw@ventanamicro.com, richard.sandiford@arm.com References: From: Jeff Law In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-2.4 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,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: On 11/5/23 11:47, Richard Sandiford wrote: > For a given block, an entity is either transparent for > all modes or for none. Each update to the transparency set > therefore used a loop like: > > for (i = 0; i < no_mode; i++) > clear_mode_bit (transp[bb->index], j, i); > > This patch instead starts out with a bit-per-block bitmap > and updates the main bitmap at the end. > > This isn't much of a simplification on its own. The main > purpose is to simplify later patches. > > gcc/ > * mode-switching.cc (optimize_mode_switching): Initially > compute transparency in a bit-per-block bitmap. OK jeff