From: Eli Zaretskii <eliz@gnu.org>
To: Arthur Miller <arthur.miller@live.com>
Cc: emacs-devel@gnu.org, akrl@sdf.org
Subject: Re: Q: What is default architecture for code produced by native compiler?
Date: Thu, 26 Aug 2021 09:57:38 +0300 [thread overview]
Message-ID: <83mtp4u1zx.fsf@gnu.org> (raw)
In-Reply-To: <AM9PR09MB49774ABF82E34C60E3B160F496C69@AM9PR09MB4977.eurprd09.prod.outlook.com> (message from Arthur Miller on Thu, 26 Aug 2021 01:26:30 +0200)
> From: Arthur Miller <arthur.miller@live.com>
> Cc: akrl@sdf.org, emacs-devel@gnu.org
> Date: Thu, 26 Aug 2021 01:26:30 +0200
>
> > I'm also curious why you want to mess with that. Do you use the
> > equivalent GCC switches when compiling Emacs? If so, why?
> Yes, I do, I compile Emacs with -O3 -march=native and -mcpu=native
>
> Hopefully gcc will emit some AVX instructions where possible. I haven't
> dissasembled Emacs binary so I don't know how big is difference between generic
> and native.
Well, I suggest that you do look into the differences between the
produced code, and try to measure the effect on the speed of Emacs.
Btw, -O3 is not recommended, as it frequently produces a slower Emacs.
next prev parent reply other threads:[~2021-08-26 6:57 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-24 19:29 Q: What is default architecture for code produced by native compiler? Arthur Miller
2021-08-24 20:11 ` Andrea Corallo via Emacs development discussions.
2021-08-25 1:13 ` Arthur Miller
2021-08-25 11:31 ` Eli Zaretskii
2021-08-25 23:26 ` Arthur Miller
2021-08-26 6:57 ` Eli Zaretskii [this message]
2021-08-26 8:02 ` martin rudalics
2021-08-26 8:16 ` Eli Zaretskii
2021-08-26 16:02 ` Arthur Miller
2021-08-26 16:29 ` Eli Zaretskii
2021-08-26 17:54 ` Arthur Miller
2021-08-26 15:59 ` Arthur Miller
2021-08-26 15:58 ` Arthur Miller
2021-08-26 16:27 ` Eli Zaretskii
2021-08-26 17:52 ` Arthur Miller
2021-08-25 2:49 ` Arthur Miller
2021-08-25 7:36 ` Andrea Corallo via Emacs development discussions.
2021-08-25 12:04 ` Eli Zaretskii
2021-08-25 13:04 ` Andrea Corallo via Emacs development discussions.
2021-08-25 13:11 ` Eli Zaretskii
2021-08-25 13:19 ` Andrea Corallo via Emacs development discussions.
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