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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/c0e6dee99242eff08420176a36d77b715972f1f2">c0e6dee9</a></strong>
<div>
<span>by Tamar Christina</span>
<i>at 2020-06-14T09:07:44-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">winio: Add Atomic Exchange PrimOp and implement Atomic Ptr exchanges.
The initial version was rewritten by Tamar Christina.
It was rewritten in large parts by Andreas Klebinger.
Co-authored-by: Andreas Klebinger <klebinger.andreas@gmx.at>
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a326842a863913588d37da3c964f25a2c27b1b35">a326842a</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-06-14T09:34:57-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">codeGen: Don't discard live case binders in unsafeEqualityProof logic
Previously CoreToStg would unconditionally discard cases of the form:
case unsafeEqualityProof of wild { _ -> rhs }
and rather replace the whole thing with `rhs`. However, in some cases
(see #18227) the case binder is still live, resulting in unbound
occurrences in `rhs`. Fix this by only discarding the case if the case
binder is dead.
Fixes #18227.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ad47a5c6148713e2a5e96631d557a90eb021c5c5">ad47a5c6</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-06-14T09:34:57-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">testsuite: Add tests for #18227
T18227A is the original issue which gave rise to the ticket and depends
upon bytestring. T18227B is a minimized reproducer.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/179946862fb2e31247a57187ea5c7c312a31d5ee">17994686</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-06-14T09:34:57-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">hadrian: Fix rts include and library paths
Fixes two bugs:
* (?) and (<>) associated in a surprising way
* We neglected to include libdw paths in the rts configure flags
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ef7fc2bda2cda8e3432e31974079cfeef6490d7b">ef7fc2bd</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-06-14T09:34:57-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">hadrian: Drop redundant GHC arguments
Cabal should already be passing this arguments to GHC.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e40060f8c4a785fe63f8793d2edf7fbd0905becb">e40060f8</a></strong>
<div>
<span>by Peter Trommler</span>
<i>at 2020-06-14T09:34:58-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">FFI: Fix pass small ints in foreign call wrappers
The Haskell calling convention requires integer parameters smaller
than wordsize to be promoted to wordsize (where the upper bits are
don't care). To access such small integer parameter read a word from
the parameter array and then cast that word to the small integer
target type.
Fixes #15933
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/a568464e724702282eeebdfb0085285ce64cc49e">a568464e</a></strong>
<div>
<span>by Krzysztof Gogolewski</span>
<i>at 2020-06-14T09:34:58-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Fix "ndecreasingIndentation" in manual (#18116)
</pre>
</li>
</ul>
<h4>30 changed files:</h4>
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<a href="#9ab3868b23ed5d5a6e12ef902049902556fa4009">
aclocal.m4
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<a href="#451725cc4e5d443a3b7c2adcdf224840f953b7e2">
compiler/GHC/Builtin/primops.txt.pp
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<a href="#c898e00d01234ab22d3b485be68db3645f52f220">
compiler/GHC/Cmm/MachOp.hs
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<a href="#71e696f452eb493722d70306c6f304fc9b2f6a95">
compiler/GHC/Cmm/Parser.y
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<a href="#c1d65bce6c6501bf42d5bf890e846709b5645832">
compiler/GHC/CmmToAsm/CPrim.hs
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<a href="#f71fa75baa7807186473f09c45a9ada1b72f4c6c">
compiler/GHC/CmmToAsm/PPC/CodeGen.hs
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<a href="#e76eae04dea432f874db91c25e4a5725d7cc127b">
compiler/GHC/CmmToAsm/SPARC/CodeGen.hs
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<a href="#2bae5947e9412f6deebf4db7dcb89d780913130f">
compiler/GHC/CmmToAsm/X86/CodeGen.hs
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<a href="#7b360ca84c1b9aaecc0f9de207a7698dc36514fe">
compiler/GHC/CmmToAsm/X86/Instr.hs
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<a href="#335d279236d65dcf13f2bab3891e515cb803203c">
compiler/GHC/CmmToAsm/X86/Ppr.hs
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<a href="#76664ab267df4fc0bec2465efd78bf0afacfe3a7">
compiler/GHC/CmmToC.hs
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<a href="#a49dbda5c8a9c380f638f55cf5ade791db0017cc">
compiler/GHC/CmmToLlvm/CodeGen.hs
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<a href="#d79a8a61508cb6c5f38a23ab2b691bb77306f672">
compiler/GHC/CoreToStg.hs
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<a href="#9f0ddacf1490a1a7356d3b8c1b8506b1a8bc6ad4">
compiler/GHC/HsToCore/Foreign/Decl.hs
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<a href="#e18aab7fcc134a71d91f9d26e33b5110a3917e44">
compiler/GHC/StgToCmm/Foreign.hs
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<a href="#d12a108e34fe83acc9c99357ae841e22a0af0a23">
compiler/GHC/StgToCmm/Prim.hs
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<a href="#87db583be5c13c1f7b3c958b10e03d67b6a2ca06">
configure.ac
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<a href="#b421960e854c6cfa1e4ca830bd6a5fc6eef91168">
docs/users_guide/8.12.1-notes.rst
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<a href="#18b2d73a5951d93c536faf471580e620f462867b">
docs/users_guide/flags.py
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<a href="#d92ed897486e6597b1000abb84a65ad03542615b">
hadrian/src/Settings/Packages.hs
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<a href="#ccd32698c1d6d80e18d4e38a453603292e206906">
includes/stg/Prim.h
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<a href="#2d838bb8165073c4e5672387ae3340ad8d483b01">
libraries/base/GHC/Ptr.hs
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<a href="#98b46afb652ad9b66a276d3c312d1262c3838642">
libraries/base/Unsafe/Coerce.hs
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<a href="#786d2d970e91533a64e0123b52368c3ec897ed39">
libraries/ghc-prim/cbits/atomic.c
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<a href="#54f2593fa6d429b2b82cc2200e8bcda0f38854de">
libraries/ghc-prim/changelog.md
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<a href="#2ab80221ce99aa96a346b29d4e98230cf4d915a7">
rts/package.conf.in
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rts/rts.cabal.in
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testsuite/tests/codeGen/should_compile/T18227A.hs
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testsuite/tests/codeGen/should_compile/T18227B.hs
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<a href="#6b1c188363067aa37c05e3a281dad45535511b14">
testsuite/tests/codeGen/should_compile/all.T
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