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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: Wed, 25 Aug 2021 14:31:30 +0300	[thread overview]
Message-ID: <83pmu1vjzh.fsf@gnu.org> (raw)
In-Reply-To: <AM9PR09MB497737899A5209564845B01B96C69@AM9PR09MB4977.eurprd09.prod.outlook.com> (message from Arthur Miller on Wed, 25 Aug 2021 03:13:49 +0200)

> From: Arthur Miller <arthur.miller@live.com>
> Date: Wed, 25 Aug 2021 03:13:49 +0200
> Cc: emacs-devel@gnu.org
> 
> >> If it is generic, do we have option to pass in arch and cpu flags?
> >
> > No we don't, even if we could expose it using
> > 'gcc_jit_context_add_command_line_option' for non obsolete versions of
> > GCC.
> 
> Allright, is there any interest to expose this? :-)
> 
> We could have a defcustom in comp.el, either some boolean like:
> "native-comp-prefer-host-cpu"

What's wrong with using native-comp-driver-options?

I'm also curious why you want to mess with that.  Do you use the
equivalent GCC switches when compiling Emacs?  If so, why?

> To be honest, I have no idea if there is much if anything to win in speed in elisp context,
> between generic and skylake

My guess would be nothing.  And if you want to try that, I'd first
suggest trying that when building some program with GCC.




  reply	other threads:[~2021-08-25 11:31 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 [this message]
2021-08-25 23:26       ` Arthur Miller
2021-08-26  6:57         ` Eli Zaretskii
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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