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Subject: Re: [PATCH] Fix aarch64 fallout of [PATCH, LRA] Fix PR rtl-optimization 77289, LRA matching constraint problem
To: Bernd Edlinger <bernd.edlinger@hotmail.de>,        Kyrill Tkachov <kyrylo.tkachov@foss.arm.com>,        Peter Bergner <bergner@vnet.ibm.com>
References: <HE1PR0701MB2169D0240E850A1E7C8802C0E4FC0@HE1PR0701MB2169.eurprd07.prod.outlook.com> <e960a349-732b-d6a6-a049-bcb500847dba@vnet.ibm.com> <57D6A451.1030700@foss.arm.com> <AM4PR0701MB21620B0A84C1D7F82A0DC706E4FF0@AM4PR0701MB2162.eurprd07.prod.outlook.com>
Cc: Andrew Pinski <pinskia@gmail.com>, GCC Patches <gcc-patches@gcc.gnu.org>,        Vladimir Makarov <vmakarov@redhat.com>,        Bill Schmidt <wschmidt@linux.vnet.ibm.com>
From: Jeff Law <law@redhat.com>
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Date: Mon, 12 Sep 2016 21:54:00 -0000
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On 09/12/2016 07:43 AM, Bernd Edlinger wrote:
> Hi,
>
> the attached patch boot-straps and reg-tests cleanly
> on x86_64-pc-linux-gnu, powerpc and aarch64 targets.
>
> Is it OK for trunk?
Unfortunately, there's no explanation for why the original code was 
wrong.  Yes, I can clearly see you're trying to fix an ICE, but what 
about the code's behaviour was wrong?

jeff