mailing list of musl libc
 help / color / mirror / Atom feed
From: Arnd Bergmann <arnd@kernel.org>
To: musl@lists.openwall.com
Subject: Re: [musl] Adding PowerPC SPE support
Date: Mon, 7 Jun 2021 09:56:03 +0200
Message-ID: <CAK8P3a3EVvacDCna4nL3Nv_sf3=s=SiaPpTwYUQyCbmfSf=Kjg@mail.gmail.com> (raw)
In-Reply-To: <20210605220514.GH13220@brightrain.aerifal.cx>

On Sun, Jun 6, 2021 at 12:05 AM Rich Felker <dalias@libc.org> wrote:
> On Sat, Jun 05, 2021 at 11:15:04PM +0200, Arnd Bergmann wrote:
> > On Sat, Jun 5, 2021 at 7:12 PM Rich Felker <dalias@libc.org> wrote:
> > >
> > > When the soft-float ABI for PowerPC was added in 2016 (commit
> > > 5a92dd95c77cee81755f1a441ae0b71e3ae2bcdb, mail thread "[PATCH v3] Add
> > > PowerPC soft-float support") with Freescale cpus having the
> > > alternative SPE FPU as the main use case, I noted that we could
> > > probably support hard float on them, but that it would involve
> > > determining some difficult ABI constraints. I'm now revisiting adding
> > > this support.
> >
> > Note that regardless of the technical issues, there is a practical problem
> > in the long run, since gcc-8.5 was the last release with powerpcspe
> > support, and at some point in the future everyone will move to gcc-9
> > or higher.
>
> Yes, llvm has added it though and presumably ppl who want it will just
> use clang or stick with old gcc (which makes me sad, but that's how it is).

Ah, I hadn't noticed llvm support for it. It looks like Justin Hibbits
contributed it for his work on FreeBSD, which is moving away from gcc
anway. FreeBSD 12.x have started listing powerpcspe as a "Tier 2"
supported architecture, so it seems likely they are more active than
Linux on this hardware now.

       Arnd

      reply	other threads:[~2021-06-07  7:58 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-05 17:12 Rich Felker
2021-06-05 21:15 ` Arnd Bergmann
2021-06-05 22:05   ` Rich Felker
2021-06-07  7:56     ` Arnd Bergmann [this message]

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='CAK8P3a3EVvacDCna4nL3Nv_sf3=s=SiaPpTwYUQyCbmfSf=Kjg@mail.gmail.com' \
    --to=arnd@kernel.org \
    --cc=musl@lists.openwall.com \
    /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

mailing list of musl libc

This inbox may be cloned and mirrored by anyone:

	git clone --mirror https://inbox.vuxu.org/musl

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V1 musl musl/ https://inbox.vuxu.org/musl \
		musl@inbox.vuxu.org
	public-inbox-index musl

Example config snippet for mirrors.
Newsgroup available over NNTP:
	nntp://inbox.vuxu.org/vuxu.archive.musl


code repositories for the project(s) associated with this inbox:

	https://git.vuxu.org/mirror/musl/

AGPL code for this site: git clone https://public-inbox.org/public-inbox.git