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<h3 style="margin-top: 20px; margin-bottom: 10px;">
Marge Bot pushed to branch wip/marge_bot_batch_merge_job at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
</h3>
<h4 style="margin-top: 10px; margin-bottom: 10px;">
Commits:
</h4>
<ul>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/19bcfc9b30ae343f05e43008fea4ebb874ac929c">19bcfc9b</a></strong>
<div>
<span> by Simon Peyton Jones </span> <i> at 2024-06-14T14:44:19-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Add hack for #24623

..Th bug in #24623 is randomly triggered by this MR!..
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/7a08a025eecb0cca494757fc83099a9decb052ad">7a08a025</a></strong>
<div>
<span> by Simon Peyton Jones </span> <i> at 2024-06-14T14:44:19-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Various fixes to type-tidying

This MR was triggered by #24868, but I found a number of bugs
and infelicities in type-tidying as I went along.  Highlights:

* Fix to #24868 is in GHC.Tc.Errors.report_unsolved: avoid
  using the OccNames of /bound/ variables when tidying /free/
  variables; see the call to `tidyAvoiding`.  That avoid the
  gratuitous renaming which was the cause of #24868. See
     Note [tidyAvoiding] in GHC.Core.TyCo.Tidy

* Refactor and document the tidying of open types.
  See GHC.Core.TyCo.Tidy
     Note [Tidying open types]
     Note [Tidying is idempotent]

* Tidy the coercion variable in HoleCo. That's important so
  that tidied types have tidied kinds.

* Some small renaming to make things consistent.  In particular
  the "X" forms return a new TidyEnv.  E.g.
     tidyOpenType  :: TidyEnv -> Type -> Type
     tidyOpenTypeX :: TidyEnv -> Type -> (TidyEnv, Type)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2eac02880a4b8184c95261f91b53e02da8b36fb4">2eac0288</a></strong>
<div>
<span> by Simon Peyton Jones </span> <i> at 2024-06-14T14:44:19-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Wibble
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e5d24cc28a00a7af40539b47b54d71636bb77ae8">e5d24cc2</a></strong>
<div>
<span> by Simon Peyton Jones </span> <i> at 2024-06-14T14:44:20-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Wibbles
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/246bc3a43a57b7c9ea907bd9ef15b7ef7c490681">246bc3a4</a></strong>
<div>
<span> by Simon Peyton Jones </span> <i> at 2024-06-14T14:44:56-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Localise a case-binder in SpecConstr.mkSeqs

This small change fixes #24944

See (SCF1) in Note [SpecConstr and strict fields]
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6b7ea284832be1355f19a6edc108aae63fbda4f7">6b7ea284</a></strong>
<div>
<span> by Sylvain Henry </span> <i> at 2024-06-14T22:20:15-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>PPC: display foreign label in panic message (cf #23969)
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/3bb45f0523c4a8bde8639dd8bf694791afcc0d11">3bb45f05</a></strong>
<div>
<span> by Rodrigo Mesquita </span> <i> at 2024-06-14T22:20:15-04:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #333238; position: relative; font-family: var(--default-mono-font, "GitLab Mono"),"JetBrains Mono","Menlo","DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>cmm: Parse MO_BSwap primitive operation

Parsing this operation allows it to be tested using `test-primops` in a
subsequent MR.
</pre>
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