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Re: [PATCH, LRA] Fix PR rtl-optimization 77289, LRA matching constraint problem

From: Kyrill Tkachov <kyrylo dot tkachov at foss dot arm dot com>
To: Peter Bergner <bergner at vnet dot ibm dot com>, Bernd Edlinger <bernd dot edlinger at hotmail dot de>
Cc: Andrew Pinski <pinskia at gmail dot com>, GCC Patches <gcc-patches at gcc dot gnu dot org>, Jeff Law <law at redhat dot com>, Vladimir Makarov <vmakarov at redhat dot com>, Bill Schmidt <wschmidt at linux dot vnet dot ibm dot com>
Date: Mon, 12 Sep 2016 13:49:21 +0100
Subject: Re: [PATCH, LRA] Fix PR rtl-optimization 77289, LRA matching constraint problem
Authentication-results: sourceware.org; auth=none
References: <HE1PR0701MB2169D0240E850A1E7C8802C0E4FC0@HE1PR0701MB2169.eurprd07.prod.outlook.com> <e960a349-732b-d6a6-a049-bcb500847dba@vnet.ibm.com>


On 11/09/16 21:53, Peter Bergner wrote:

On 9/11/16 3:35 PM, Bernd Edlinger wrote:

FYI: I have a patch for the aarch64 regression here:
https://gcc.gnu.org/bugzilla/attachment.cgi?id=39600

It passes bootstrap and reg-testing on x86_64-linux-gnu.


Thanks for debugging and fixing this!

Also the mentioned aarch64 and powerpc test cases
pass manually in a cross-compiler, but I cannot do the
boot-strap on powerpc or aarch64 by myself.

So It would be nice if one of you would take the time
and try that patch.


I can confirm that is bootstraps and regtests with no regressions
on powerpc64le-linux and that the pr77289.c test case does pass.


The patch also passes bootstrap and testing on aarch64-none-linux-gnu.
The ICEs I was seeing go away.

Thanks!
Kyrill

Peter

Follow-Ups:
- [PATCH] Fix aarch64 fallout of [PATCH, LRA] Fix PR rtl-optimization 77289, LRA matching constraint problem
  - From: Bernd Edlinger

References:
- Re: [PATCH, LRA] Fix PR rtl-optimization 77289, LRA matching constraint problem
  - From: Bernd Edlinger
- Re: [PATCH, LRA] Fix PR rtl-optimization 77289, LRA matching constraint problem
  - From: Peter Bergner

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