[llvm] r318352 - Add backend name to Target to enable runtime info to be fed back into TableGen

[Daniel Sanders via llvm-commits]

Sure. I've added a note in r319093

> On 20 Nov 2017, at 14:40, Hans Wennborg <hans at chromium.org> wrote:
> 
> Would you like to add a note in docs/ReleaseNotes.rst to give
> out-of-tree maintainers a heads-up that they need to take action?
> 
> On Wed, Nov 15, 2017 at 3:55 PM, Daniel Sanders via llvm-commits
> <llvm-commits at lists.llvm.org> wrote:
>> Author: dsanders
>> Date: Wed Nov 15 15:55:44 2017
>> New Revision: 318352
>> 
>> URL: http://llvm.org/viewvc/llvm-project?rev=318352&view=rev
>> Log:
>> Add backend name to Target to enable runtime info to be fed back into TableGen
>> 
>> Summary:
>> Make it possible to feed runtime information back to tablegen to enable
>> profile-guided tablegen-eration, detection of untested tablegen definitions, etc.
>> 
>> Being a cross-compiler by nature, LLVM will potentially collect data for multiple
>> architectures (e.g. when running 'ninja check'). We therefore need a way for
>> TableGen to figure out what data applies to the backend it is generating at the
>> time. This patch achieves that by including the name of the 'def X : Target ...'
>> for the backend in the TargetRegistry.
>> 
>> Reviewers: qcolombet
>> 
>> Reviewed By: qcolombet
>> 
>> Subscribers: jholewinski, arsenm, jyknight, aditya_nandakumar, sdardis, nemanjai, ab, nhaehnle, t.p.northover, javed.absar, qcolombet, llvm-commits, fedor.sergeev
>> 
>> Differential Revision: https://reviews.llvm.org/D39742