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<p class="MsoNormal">Hi folks, <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><a href="https://github.com/facebookincubator/BOLT">https://github.com/facebookincubator/BOLT</a> branch ¡°main¡± contains a merge proposal of BOLT into llvm-project. This is llvm from Nov 30<sup>th</sup> with 1016 commits on top of it corresponding
to the BOLT project.<br>
<br>
These 1016 commits would ideally be committed in a merge commit, merging LLVM as the first parent and BOLT as the second, and would be there only for the purposes of preserving project history. In this way, they should be easily skippable during a bisect of
LLVM in the same way as the merge commit of flang. These commits represent the linear history of BOLT on top of rebased LLVM, so most commits are not buildable (since we can¡¯t build a very old version of BOLT on top of a recent LLVM base). That¡¯s why this
is for history/blame only.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We have addressed the issues in <a href="https://github.com/facebookincubator/BOLT/issues/248">
https://github.com/facebookincubator/BOLT/issues/248</a> and we are happy to continue working on any extra suggestions.<br>
<br>
Would it be better if we put this branch as a PR into llvm-project as a way to make it easier for people to review it? I don¡¯t think we can put this into phabricator. However, I guess github¡¯s bot will probably auto-close the PR. Also feel free to open new
issues against our facebookincubator/BOLT project as a way to review it.<br>
<br>
Thanks<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">Hans Wennborg <hans@chromium.org><br>
<b>Date: </b>Thursday, November 4, 2021 at 5:42 AM<br>
<b>To: </b>Maksim Panchenko <maks@fb.com><br>
<b>Cc: </b>Xinliang David Li <xinliangli@gmail.com>, F¨¡ng-ru¨¬ S¨°ng <maskray@google.com>, Sriraman Tallam <tmsriram@google.com>, Chris Lattner <clattner@llvm.org>, Andrey Bokhanko <andreybokhanko@gmail.com>, Rafael Auler <rafaelauler@fb.com>, vladislav.khmelevskyi@huawei.com
<vladislav.khmelevskyi@huawei.com>, tstellar@redhat.com <tstellar@redhat.com>, joker.eph@gmail.com <joker.eph@gmail.com>, echristo@gmail.com <echristo@gmail.com>, Nick Desaulniers <ndesaulniers@google.com>, llvm-dev@lists.llvm.org <llvm-dev@lists.llvm.org><br>
<b>Subject: </b>Re: Preparing BOLT for LLVM monorepo<o:p></o:p></span></p>
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<p class="MsoNormal">Hi Maksim,<br>
<br>
On Tue, Nov 2, 2021 at 9:52 PM Maksim Panchenko <maks@fb.com> wrote:<br>
> We are still working on finalizing the exact logistics of the merge.<br>
><br>
> However, we expect to follow the Flang project's footsteps and run the<br>
><br>
> "--no-ff" merge to preserve the history of ~1K commits. We would like to<br>
><br>
> ask for help and coordination from the release managers Tom Stellard and<br>
><br>
> Hans Wennborg.<br>
<br>
I'm no longer involved in release management, and don't really have<br>
any opinion on how to merge this.<br>
<br>
Thanks,<br>
Hans</p>
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