all messages for Emacs-related lists mirrored at yhetil.org
 help / color / mirror / code / Atom feed
From: Eli Zaretskii <eliz@gnu.org>
To: Andrea Corallo <akrl@sdf.org>
Cc: arthur.miller@live.com, emacs-devel@gnu.org
Subject: Re: Q: What is default architecture for code produced by native compiler?
Date: Wed, 25 Aug 2021 15:04:17 +0300	[thread overview]
Message-ID: <83k0k9vigu.fsf@gnu.org> (raw)
In-Reply-To: <xjftujec6w4.fsf@sdf.org> (emacs-devel@gnu.org)

> Cc: emacs-devel@gnu.org
> Date: Wed, 25 Aug 2021 07:36:59 +0000
> From:  Andrea Corallo via "Emacs development discussions." <emacs-devel@gnu.org>
> 
> > (setq native-comp-driver-options '("-march=native" "-mcpu=native"))
> >
> > but I see no difference in emitted code when I dissaemble produced binaries.
> 
> Driver options are not for the compiler but rather linker and assembler,
> infact `native-comp-driver-options' relies on
> 'gcc_jit_context_add_driver_option' [1].

Then the name of the defcustom is misleading, IMO.  These can only be
the options that cc1 (or assembler/linker) understands, is that right?

And I guess this means we cannot support GCC options, because there's
no front-end driver like GCC in libgccjit?

> That said for most of the code we generate ATM I doubt would make much
> difference to specify a different -march and/or -mcpu.

That's also my opinion.



  reply	other threads:[~2021-08-25 12:04 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
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 [this message]
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.

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=83k0k9vigu.fsf@gnu.org \
    --to=eliz@gnu.org \
    --cc=akrl@sdf.org \
    --cc=arthur.miller@live.com \
    --cc=emacs-devel@gnu.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
Code repositories for project(s) associated with this external index

	https://git.savannah.gnu.org/cgit/emacs.git
	https://git.savannah.gnu.org/cgit/emacs/org-mode.git

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.