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Re: [4.8 branch] PATCH: PR middle-end/53623: [4.7/4.8 Regression] sign extension is effectively split into two x86-64 instructions
- From: Jakub Jelinek <jakub at redhat dot com>
- To: "H.J. Lu" <hjl dot tools at gmail dot com>
- Cc: "Melik-adamyan, Areg" <areg dot melik-adamyan at intel dot com>, GCC Patches <gcc-patches at gcc dot gnu dot org>
- Date: Mon, 16 Feb 2015 14:47:12 +0100
- Subject: Re: [4.8 branch] PATCH: PR middle-end/53623: [4.7/4.8 Regression] sign extension is effectively split into two x86-64 instructions
- Authentication-results: sourceware.org; auth=none
- References: <20150215205339 dot GA26523 at gmail dot com> <20150216093526 dot GA1746 at tucnak dot redhat dot com> <CAMe9rOq0689DnWsGwR8YZBsVC1QEcrMKNiSU4baka1mronLLJw at mail dot gmail dot com> <CAMe9rOrt4Omo+h2sKaWS=uwac-2mLNPnONj3fbZ3P5NmFAUR0Q at mail dot gmail dot com> <20150216131829 dot GC1746 at tucnak dot redhat dot com> <CAMe9rOojSWOzajchBXtVAH+afixA6eYAp1=_cma_=9EkmOh4Rw at mail dot gmail dot com> <CAMe9rOq-Hg=X5ifLBr9Jeg38S=w9pzcVapSTVsUUkpNwLXTPOg at mail dot gmail dot com>
- Reply-to: Jakub Jelinek <jakub at redhat dot com>
On Mon, Feb 16, 2015 at 05:44:45AM -0800, H.J. Lu wrote:
> Should it be a concern for 4.8 backport? Should we also backport r215205:
Probably. But, please wait for Jeff Law's approval of all of this before
committing.
> commit b71346c449d2b4a63985a39c4c092ecdfb37b5a0
> Author: jiwang <jiwang@138bc75d-0d04-0410-961f-82ee72b054a4>
> Date: Fri Sep 12 09:29:16 2014 +0000
>
> [Ree] Ensure inserted copy don't change the number of hard registers
>
> 2014-09-12 Wilco Dijkstra <wilco.dijkstra@arm.com>
>
> gcc/
> * ree.c (combine_reaching_defs): Ensure inserted copy don't change the
> number of hard registers.
>
>
> git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@215205
> 138bc75d-0d04-0410-961f-82ee72b054a4
>
> to 4.8 and 4.9 branches?
Jakub