From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg1-x52b.google.com (mail-pg1-x52b.google.com [IPv6:2607:f8b0:4864:20::52b]) by sourceware.org (Postfix) with ESMTPS id B7EDC3947C31 for ; Fri, 28 Jan 2022 17:54:26 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org B7EDC3947C31 Received: by mail-pg1-x52b.google.com with SMTP id e16so5832347pgn.4 for ; Fri, 28 Jan 2022 09:54:26 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:references:from:in-reply-to :content-transfer-encoding; bh=Gq5CO9nKVI/UMNFyW2gBWqH3CO0xQvg4yZb1ebQP7j0=; b=BiUKWXQhTubPC4GFFVEdEXUUiKKScgVZU7/hFMCM4bW1of3sISkh7HVn9s+AJ39nAG h+qWOo5xaYbvjVv2Y6C6Kb9s0j7MIPAC3rkag1r6smu2nTMAmfS6I4Vyw9NSguqOiGTE OwnW3taUnSeixXak/HwFvnfFJZLtzkRZezv0b9CpBE/OKmPMHYnrO9wbTPKLhyAkKVDg Qy60JQskQJtZYDfYVsbzlMHsDDGLMyXfFqGDgv+2muudVDhCtHju+RsxlsWiQlpn6Seg JYE0qIuSVGT78x4fXxcbFOL54p2qKODniA6/nv2fJrZ6lRLFKvWUbuZ2TqSG5cdUwbAw //HA== X-Gm-Message-State: AOAM532HRgDoR1X+CpztkAY45Ubix0OmwqqB38PJRpumdqimZwR9TadD NbDRJpo51J0XTRw7IGYx7B8= X-Google-Smtp-Source: ABdhPJwDaz5n7Vu8s2+Kt042tqWFy2C0GkdIR1foAaYlU0Ya498js1MKrSqCQsf5h8FEjz0nDNFIwg== X-Received: by 2002:a63:d943:: with SMTP id e3mr7407680pgj.427.1643392465768; Fri, 28 Jan 2022 09:54:25 -0800 (PST) Received: from [192.168.1.15] (65-130-85-11.slkc.qwest.net. [65.130.85.11]) by smtp.gmail.com with ESMTPSA id w19sm10963074pfu.47.2022.01.28.09.54.25 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 28 Jan 2022 09:54:25 -0800 (PST) Message-ID: Date: Fri, 28 Jan 2022 10:54:23 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.5.0 Subject: Re: [PATCH] [rtl/cprop_hardreg] Don't propagate for a more expensive reg-reg move. Content-Language: en-US To: liuhongt , gcc-patches@gcc.gnu.org References: <20220125013147.54351-1-hongtao.liu@intel.com> From: Jeff Law In-Reply-To: <20220125013147.54351-1-hongtao.liu@intel.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, KAM_SHORT, NICE_REPLY_A, RCVD_IN_DNSWL_NONE, SCC_BODY_URI_ONLY, SPF_HELO_NONE, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 28 Jan 2022 17:54:27 -0000 On 1/24/2022 6:31 PM, liuhongt via Gcc-patches wrote: > For i386, it enables optimization like: > > vmovd %xmm0, %edx > - vmovd %xmm0, %eax > + movl %edx, %eax > > Bootstrapped and regtested on CLX for both > x86_64-pc-linux-gnu{-m32,} and > x86_64-pc-linux-gnu{-m32\ -march=native,\ -march=native} > > Ok for trunk? > > gcc/ChangeLog: > > PR rtl-optimization/104059 > * regcprop.cc (copyprop_hardreg_forward_1): Don't propagate > for a more expensive reg-reg move. > > gcc/testsuite/ChangeLog: > > * gcc.target/i386/pr104059.c: New test. OK jeff