From: Alan Modra <amodra@gmail.com>
To: Jeff Law <law@redhat.com>
Cc: gcc-patches@gcc.gnu.org
Subject: Re: Fix for PRs 36043, 58744 and 65408
Date: Wed, 18 Mar 2015 04:22:00 -0000 [thread overview]
Message-ID: <20150318042208.GD24573@bubble.grove.modra.org> (raw)
In-Reply-To: <55088069.3010802@redhat.com>
On Tue, Mar 17, 2015 at 01:28:41PM -0600, Jeff Law wrote:
> On 03/14/2015 07:02 AM, Alan Modra wrote:
> > PR target/65408
> > PR target/58744
> > PR middle-end/36043
> > * calls.c (load_register_parameters): Don't load past end of
> > mem unless suitably aligned.
> I think this is probably a stage1 item. Richi, Jakub, Joseph, do any of you
> think we should try to push this into gcc-5?
Some (severity) background to PR65408. The bug came from SAP HANA
(en.wikipedia.org/wiki/SAP_HANA), a crash that happens on powerpc64
and powerpc64le. aarch64 would also be susceptible to the crash since
it also loads 16 bytes for the 12-byte struct. x86_64 only loads 12
bytes (i386.c:construct_container generates a parallel with a DImode
and SImode load). However the underlying bug is there and hits x86_64
too for the pr58744 and pr36043 testcases..
--
Alan Modra
Australia Development Lab, IBM
next prev parent reply other threads:[~2015-03-18 4:22 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-14 13:02 Alan Modra
2015-03-14 13:14 ` H.J. Lu
2015-03-14 13:55 ` Alan Modra
2015-03-14 13:58 ` Bernhard Reutner-Fischer
2015-03-14 17:52 ` Mike Stump
2015-03-14 17:56 ` Jakub Jelinek
2015-03-14 18:28 ` Mike Stump
2015-03-15 3:00 ` Alan Modra
2015-03-17 19:28 ` Jeff Law
2015-03-18 4:22 ` Alan Modra [this message]
2015-03-18 11:12 ` Richard Biener
2015-04-13 4:50 ` Alan Modra
2015-04-13 7:47 ` Richard Biener
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