From: Eric Botcazou <ebotcazou@adacore.com>
To: Alan Lawrence <alan.lawrence@arm.com>
Cc: gcc-patches@gcc.gnu.org, Jakub Jelinek <jakub@redhat.com>,
Ramana Radhakrishnan <ramana.radhakrishnan@foss.arm.com>,
Richard Earnshaw <Richard.Earnshaw@foss.arm.com>,
fweimer@redhat.com
Subject: Re: [PATCH 1/2][ARM] PR/65956 AAPCS update for alignment attribute
Date: Fri, 27 Nov 2015 18:17:00 -0000 [thread overview]
Message-ID: <2078951.fh4hk6FOBb@polaris> (raw)
In-Reply-To: <CAOckXuNSqMo7Z=x0ME=m55ydigGPOiDGaBpj-Mpj2J_vdQXhhQ@mail.gmail.com>
> So, I'm not familiar with Ada 'fat pointers' but if that is one -
> well, it's a record, with an alignment that the 'new' AAPCS now
> ignores, so yes the ABI has changed between gcc 5.1 and 5.2, rather
> more significantly for Ada than for C.
Yes, XUP suffixed types are fat pointers and they are maximally aligned so
that they can be given non-BLK mode and, consequently, live in registers.
> Thoughts?
There is no official ABI for Ada so I guess that's not really a problem as
long as it's documented on https://gcc.gnu.org/gcc-5/changes.html.
--
Eric Botcazou
next prev parent reply other threads:[~2015-11-27 17:56 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-03 15:24 [PATCH 0/2][trunk+5 backport][ARM] PR/65956 Implement AAPCS updates " Alan Lawrence
2015-07-03 15:26 ` [PATCH 1/2][ARM] PR/65956 AAPCS update " Alan Lawrence
2015-07-03 16:11 ` Richard Earnshaw
2015-07-03 18:24 ` Richard Biener
2015-07-03 20:43 ` Richard Earnshaw
2015-07-04 10:57 ` Richard Biener
2015-07-04 11:13 ` Jakub Jelinek
2015-07-06 10:01 ` Alan Lawrence
2015-07-05 13:24 ` Eric Botcazou
2015-07-06 11:00 ` Alan Lawrence
2015-07-06 14:23 ` Ramana Radhakrishnan
2015-07-06 16:38 ` Alan Lawrence
2015-07-06 16:40 ` Ramana Radhakrishnan
2015-07-06 16:45 ` Alan Lawrence
2015-11-04 13:14 ` Jakub Jelinek
2015-11-04 21:30 ` Florian Weimer
2015-11-06 16:48 ` Alan Lawrence
2015-11-06 17:00 ` Jakub Jelinek
2015-11-26 14:05 ` Alan Lawrence
2015-11-27 13:45 ` Alan Lawrence
2015-11-27 18:17 ` Eric Botcazou [this message]
2015-11-30 19:40 ` Florian Weimer
2015-07-07 10:29 ` Alan Lawrence
2015-07-03 17:27 ` Jakub Jelinek
2015-07-03 15:27 ` [PATCH 2/2][ARM] fix movdi expander to avoid illegal ldrd/strd Alan Lawrence
2015-07-03 16:16 ` Richard Earnshaw
2015-07-06 17:40 ` Alan Lawrence
2015-07-03 17:12 ` [PATCH 0/2][trunk+5 backport][ARM] PR/65956 Implement AAPCS updates for alignment attribute Richard Biener
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