From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-return-195481-listarch-gcc=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 118469 invoked by alias); 6 Mar 2018 18:36:54 -0000
Mailing-List: contact gcc-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc/>
List-Post: <mailto:gcc@gcc.gnu.org>
List-Help: <http://gcc.gnu.org/ml/>
Sender: gcc-owner@gcc.gnu.org
Received: (qmail 118458 invoked by uid 89); 6 Mar 2018 18:36:54 -0000
Authentication-Results: sourceware.org; auth=none
X-Virus-Found: No
X-Spam-SWARE-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_PASS autolearn=ham version=3.3.2 spammy=nests, H*f:sk:7fvKMD3, H*i:sk:7fvKMD3, HContent-Transfer-Encoding:8bit
X-HELO: mx2.suse.de
Received: from mx2.suse.de (HELO mx2.suse.de) (195.135.220.15) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Tue, 06 Mar 2018 18:36:53 +0000
Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254])	by mx2.suse.de (Postfix) with ESMTP id 0A693AE67;	Tue,  6 Mar 2018 18:36:51 +0000 (UTC)
Subject: Re: How big (and fast) is going to be GCC 8? [part 2]
To: "Bin.Cheng" <amker.cheng@gmail.com>
Cc: GCC Development <gcc@gcc.gnu.org>, Jan Hubicka <hubicka@ucw.cz>, Richard Biener <richard.guenther@gmail.com>, Michael Matz <matz@suse.de>, Martin Jambor <mjambor@suse.cz>
References: <6f547f38-1751-c003-b5ae-52dae776d39a@suse.cz> <280e999f-92ec-e27b-4d47-56e2c4abdcbb@suse.cz> <CAHFci2-_UsMOosMHTWzvjn1Gnb+7fvKMD3ahbrEwqjHRHDWW_w@mail.gmail.com>
From: =?UTF-8?Q?Martin_Li=c5=a1ka?= <mliska@suse.cz>
Message-ID: <310f39c3-ee1f-88c8-92e5-16fcfdd7d27e@suse.cz>
Date: Tue, 06 Mar 2018 18:36:00 -0000
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0
MIME-Version: 1.0
In-Reply-To: <CAHFci2-_UsMOosMHTWzvjn1Gnb+7fvKMD3ahbrEwqjHRHDWW_w@mail.gmail.com>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 8bit
X-IsSubscribed: yes
X-SW-Source: 2018-03/txt/msg00082.txt.bz2

On 03/06/2018 07:16 PM, Bin.Cheng wrote:
> On Tue, Mar 6, 2018 at 5:50 PM, Martin Liška <mliska@suse.cz> wrote:
>> Hi.
>>
>> This is speed comparison of GCC 8 builds compared to my system GCC 7.3.0
>> which is built with PGO bootstrap.
>>
>> I run empty C and C++ source file, tramp3d and the rest are some big beasts
>> from GCC source file. Feel free to suggest another test candidates? Note
>> that first column defines how many times was test run.
> First thanks very much for collecting the data.
> Since we enabled several loop passes at O3 and above levels, some data
> for Ofast might be interesting?

Do you have a nice source file full of loop nests that would test that
properly?

Martin

> 
> Thanks,
> bin
>>
>> Martin