From: Steve Ellcey <sellcey@cavium.com>
To: James Greenhalgh <james.greenhalgh@arm.com>
Cc: Szabolcs Nagy <Szabolcs.Nagy@arm.com>,
gcc-patches <gcc-patches@gcc.gnu.org>, nd <nd@arm.com>
Subject: Re: [Patch][aarch64] Use IFUNCs to enable LSE instructions in libatomic on aarch64
Date: Thu, 07 Dec 2017 15:58:00 -0000 [thread overview]
Message-ID: <1512662288.23303.5.camel@cavium.com> (raw)
In-Reply-To: <20171207095645.GB35729@arm.com>
On Thu, 2017-12-07 at 09:56 +0000, James Greenhalgh wrote:
>Â
> One obvious thing I missed in the review is that this change will break
> bootstrap on systems with older assemblers. Practically, that's those of
> us who are holding out on Ubuntu 14.04. -march=armv8-a+lse would go back
> a little further, so would be preferable, but even this won't get bootstrap
> back on older systems.
>
> Is there anything you can do to check for assembler support before turning
> on IFUNCS for libatomic, or am I best to just start configuring with
> --disable-gnu-indirect-function ?
>
> Thanks,
> James
It should be possible to check for assembler support. Â I will work on a
patch to do that.
Steve Ellcey
sellcey@cavium.com
prev parent reply other threads:[~2017-12-07 15:58 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-07 20:44 Steve Ellcey
2017-08-07 20:46 ` Steve Ellcey
2017-08-25 4:56 ` Steve Ellcey
2017-08-25 16:43 ` Szabolcs Nagy
2017-08-28 18:40 ` Steve Ellcey
2017-08-29 11:42 ` Szabolcs Nagy
2017-08-30 18:39 ` Steve Ellcey
2017-08-31 18:55 ` Steve Ellcey
2017-09-27 20:35 ` Steve Ellcey
2017-09-28 11:31 ` Szabolcs Nagy
2017-09-29 20:29 ` Steve Ellcey
2017-10-02 14:38 ` Szabolcs Nagy
2017-10-03 18:57 ` Steve Ellcey
2017-10-24 18:17 ` Steve Ellcey
2017-11-20 18:27 ` Steve Ellcey
2017-11-20 18:29 ` James Greenhalgh
2017-11-20 19:50 ` Steve Ellcey
2017-11-21 17:36 ` James Greenhalgh
2017-11-29 8:09 ` Steve Ellcey
2017-12-05 0:51 ` Steve Ellcey
2017-12-07 9:56 ` James Greenhalgh
2017-12-07 15:58 ` Steve Ellcey [this message]
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