llvm dev - Nov 2015 - llvm 3.7.1 spec2006 astar lto failure on aarch64

[resending to llvm-dev for more exposure]

 

Hi Tom,

 

The following change does not seem to have made it into 3.7.1:

 

  http://reviews.llvm.org/D11847

 

This change fixes a failure we're seeing on spec2006.astar when compiled
with LTO on aarch64.

 

The change also has a somewhat complicated history of reversion, so perhaps
one of the authors/reviewers I've CC'd can chime in on this?

 

--

Geoff Berry

Employee of Qualcomm Innovation Center, Inc.

Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux
Foundation Collaborative Project

 

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On 18 November 2015 at 16:28, Geoff Berry via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
> The change also has a somewhat complicated history of reversion, so perhaps
> one of the authors/reviewers I’ve CC’d can chime in on this?
Hi Geoff,

I'm sceptical. It does look convoluted, and a rather large change, but
the case seems reasonably serious.

I'd like the authors and reviewers to make sure they can get a single
patch that applies to 3.7.1 without failures, before we can consider a
merge. This change looks very generic and can change all targets in
unpredictable ways... I'm not sure just running spec on AArch64 would
be enough to prove the change is ok for a point release.

cheers,
--renato