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Re: [PATCH] PR target/78639, Fix code generation on Power9
- From: Segher Boessenkool <segher at kernel dot crashing dot org>
- To: Michael Meissner <meissner at linux dot vnet dot ibm dot com>, gcc-patches at gcc dot gnu dot org, David Edelsohn <dje dot gcc at gmail dot com>, Bill Schmidt <wschmidt at linux dot vnet dot ibm dot com>
- Date: Fri, 2 Dec 2016 15:55:15 -0600
- Subject: Re: [PATCH] PR target/78639, Fix code generation on Power9
- Authentication-results: sourceware.org; auth=none
- References: <20161202004631.GA31017@ibm-tiger.the-meissners.org>
On Thu, Dec 01, 2016 at 07:46:31PM -0500, Michael Meissner wrote:
> The previous code before 242679 used 'wY', but I deleted the 'w' by accident.
>
> This bug showed up in compiling PUGHReduce/Reduction.c in the cactusADM Spec
> 2006 benchmark suite. I have verified that this fixes the problem.
>
> Assuming the bootstrap and make check that I'm running right now don't cause
> any regressions, can I check the patch into the trunk?
Yes of course. Thanks,
Segher
> 2016-12-01 Michael Meissner <meissner@linux.vnet.ibm.com>
>
> PR target/78639
> * config/rs6000/rs6000.md (movdi_internal64): Fix typo in
> subversion id 242679 that causes the wrong store instruction to be
> generated if a DImode is in an Altivec register using REG+REG
> addressing.