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<h3>
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>
Commits:
</h4>
<ul>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/75fc1ed58bb9adb3f472e1529d368c0fff479353">75fc1ed5</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-11-28T15:40:23-05:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Hadrian: fix detection of ghc-pkg for cross-compilers
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/7cb5df9617544dc3bdf85b719feaaa5d15f01c2c">7cb5df96</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-11-28T15:40:23-05:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">hadrian: fix ghc-pkg uses (#17601)
Make sure ghc-pkg doesn't read the compiler "settings" file by passing
--no-user-package-db.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e3fd4226a08ac6cd4abe9f25f764e518de66834a">e3fd4226</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-11-28T15:40:23-05:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">gitlab-ci: Introduce a nightly cross-compilation job
This adds a job to test cross-compilation from x86-64 to AArch64 with
Hadrian.
Fixes #18234
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/698d3d9648e9cb6b3757269e21ce4fa1692a1a3b">698d3d96</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-11-28T15:41:00-05:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">gitlab-ci: Only deploy GitLab Pages in ghc/ghc>
The deployments are quite large and yet are currently only served for
the ghc/ghc> project.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/625726f988852f5779825a954609d187d9865dc1">625726f9</a></strong>
<div>
<span>by David Eichmann</span>
<i>at 2020-11-28T15:41:37-05:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">ghc-heap: partial TSO/STACK decoding
Co-authored-by: Sven Tennie <sven.tennie@gmail.com>
Co-authored-by: Matthew Pickering <matthewtpickering@gmail.com>
Co-authored-by: Ben Gamari <bgamari.foss@gmail.com>
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/22ea9c296906ad3a8fed384bcf6fb35d4b6ca814">22ea9c29</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-11-28T15:42:13-05:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Small optimization to CmmSink.
Inside `regsUsedIn` we can avoid some thunks by specializing the
recursion. In particular we avoid the thunk for `(f e z)` in the
MachOp/Load branches, where we know this will evaluate to z.
Reduces allocations for T3294 by ~1%.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/bba42c62220a437f52e7d30cbfa67e93b4cab06e">bba42c62</a></strong>
<div>
<span>by John Ericson</span>
<i>at 2020-11-28T15:42:49-05:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Make primop handler indentation more consistent
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c82bc8e9d444d6d61198f3bfbcc7c5bb5f6ce13c">c82bc8e9</a></strong>
<div>
<span>by John Ericson</span>
<i>at 2020-11-28T15:42:49-05:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Cleanup some primop constructor names
Harmonize the internal (big sum type) names of the native vs fixed-sized
number primops a bit. (Mainly by renaming the former.)
No user-facing names are changed.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ae14f160c64d20880486ba365348ef3900c84a60">ae14f160</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-11-28T15:43:25-05:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">testsuite: Mark T14702 as fragile on Windows
Due to #18953.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/fa760ccc6e191768951a4307d812170eff55dcdd">fa760ccc</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-11-29T09:53:11-05:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">withTimings: Emit allocations counter
This will allow us to back out the allocations per compiler pass from
the eventlog. Note that we dump the allocation counter rather than the
difference since this will allow us to determine how much work is done
*between* `withTiming` blocks.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4fe6a8b472b241d9abb32431b1440586ddce5319">4fe6a8b4</a></strong>
<div>
<span>by GHC GitLab CI</span>
<i>at 2020-11-29T09:53:12-05:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">ThreadPaused: Don't zero slop until free vars are pushed
When threadPaused blackholes a thunk it calls `OVERWRITING_CLOSURE` to
zero the slop for the benefit of the sanity checker. Previously this was
done *before* pushing the thunk's free variables to the update
remembered set. Consequently we would pull zero'd pointers to the update
remembered set.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c5000ab555e6230ee35441159a94f999750ded1f">c5000ab5</a></strong>
<div>
<span>by GHC GitLab CI</span>
<i>at 2020-11-29T09:53:12-05:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">nonmoving: Fix regression from TSAN work
The TSAN rework (specifically aad1f803) introduced a subtle regression
in GC.c, swapping `g0` in place of `gen`. Whoops!
Fixes #18997.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a02628061a5e88d161296413d4d70240f315579e">a0262806</a></strong>
<div>
<span>by GHC GitLab CI</span>
<i>at 2020-11-29T09:53:12-05:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">rts/Messages: Add missing write barrier in THROWTO message update
After a THROWTO message has been handle the message closure is
overwritten by a NULL message. We must ensure that the original
closure's pointers continue to be visible to the nonmoving GC.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/72c4c6de049c3f52f5d2cd3878b9ccf1c784bac5">72c4c6de</a></strong>
<div>
<span>by GHC GitLab CI</span>
<i>at 2020-11-29T09:53:12-05:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">nonmoving: Add missing write barrier in shrinkSmallByteArray
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/cc0030c618cb6b831829a60090f6fdccf6ba2917">cc0030c6</a></strong>
<div>
<span>by GHC GitLab CI</span>
<i>at 2020-11-29T09:53:12-05:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Updates: Don't zero slop until closure has been pushed
Ensure that the the free variables have been pushed to the update
remembered set before we zero the slop.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/60c6838900c6a323f71994fe0e7f067d25a4bc49">60c68389</a></strong>
<div>
<span>by GHC GitLab CI</span>
<i>at 2020-11-29T09:53:12-05:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">OSThreads: Fix error code checking
pthread_join returns its error code and apparently doesn't set errno.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4b26ec5176437a6917d0e22606dc17764b263b93">4b26ec51</a></strong>
<div>
<span>by GHC GitLab CI</span>
<i>at 2020-11-29T09:53:12-05:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">nonmoving: Don't join to mark_thread on shutdown
The mark thread is not joinable as we detach from it on creation.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/2f49bd671a9271d74d010e427363dd25a16503ee">2f49bd67</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-11-29T09:53:12-05:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">nonmoving: Add reference to Ueno 2016
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/1d18e37b595c91f6fd4ab8b50fdd6f747b5fa235">1d18e37b</a></strong>
<div>
<span>by GHC GitLab CI</span>
<i>at 2020-11-29T09:53:12-05:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">nonmoving: Ensure that evacuated large objects are marked
See Note [Non-moving GC: Marking evacuated objects].
</pre>
</li>
</ul>
<h4>30 changed files:</h4>
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<a href="#587d266bb27a4dc3022bbed44dfa19849df3044c">
.gitlab-ci.yml
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.gitlab/ci.sh
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compiler/GHC/Builtin/primops.txt.pp
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compiler/GHC/ByteCode/Types.hs
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compiler/GHC/Cmm/Sink.hs
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compiler/GHC/Core/Opt/ConstantFold.hs
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compiler/GHC/Runtime/Interpreter.hs
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compiler/GHC/StgToCmm/Prim.hs
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compiler/GHC/Utils/Error.hs
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hadrian/src/Hadrian/Oracles/Cabal/Rules.hs
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hadrian/src/Settings/Builders/GhcPkg.hs
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