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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/89f4d8e950a1ed2a3ffab424233d3bcd243b1771">89f4d8e9</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-10-14T12:03:57-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Bump LLVM version to 10.0
Fixes #18267.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/716385c90f2f89ac45e256cdb7cdada1981b31ad">716385c9</a></strong>
<div>
<span>by Ryan Scott</span>
<i>at 2020-10-14T12:04:34-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Make DataKinds the sole arbiter of kind-level literals (and friends)
Previously, the use of kind-level literals, promoted tuples,
and promoted lists required enabling both `DataKinds` and
`PolyKinds`. This made sense back in a `TypeInType` world, but not so
much now that `TypeInType`'s role has been superseded. Nowadays,
`PolyKinds` only controls kind polymorphism, so let's make `DataKinds`
the thing that controls the other aspects of `TypeInType`, which include
literals, promoted tuples and promoted lists.
There are some other things that overzealously required `PolyKinds`,
which this patch fixes as well:
* Previously, using constraints in kinds (e.g., `data T :: () -> Type`)
required `PolyKinds`, despite the fact that this is orthogonal to kind
polymorphism. This now requires `DataKinds` instead.
* Previously, using kind annotations in kinds
(e.g., `data T :: (Type :: Type) -> Type`) required both `KindSignatures`
and `PolyKinds`. This doesn't make much sense, so it only requires
`KindSignatures` now.
Fixes #18831.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ac300a0d49343e6a558dc36d94fc558f51d43bb2">ac300a0d</a></strong>
<div>
<span>by Vladislav Zavialov</span>
<i>at 2020-10-14T12:05:11-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Remove "Operator sections" from docs/users_guide/bugs.rst
The issue described in that section was fixed by
2b89ca5b850b4097447cc4908cbb0631011ce979
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/bf2411a3c198cb2df93a9e0aa0c3b8297f47058d">bf2411a3</a></strong>
<div>
<span>by Vladislav Zavialov</span>
<i>at 2020-10-14T12:05:11-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Fix PostfixOperators (#18151)
This fixes a regression introduced in 2b89ca5b850b4097447cc4908cbb0631011ce979
See the new T18151x test case.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b41860d46422ed55250445fbe2068f827cacf56c">b41860d4</a></strong>
<div>
<span>by Fumiaki Kinoshita</span>
<i>at 2020-10-14T12:36:01-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Add -Wnoncanonical-{monad,monoid}-instances to standardWarnings
-------------------------
Metric Decrease:
T12425
Metric Increase:
T17516
-------------------------
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/95f24c28e2cc05c30018bfc45ebcb480b5fc038f">95f24c28</a></strong>
<div>
<span>by Simon Peyton Jones</span>
<i>at 2020-10-14T12:36:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Fix some missed opportunities for preInlineUnconditionally
There are two signficant changes here:
* Ticket #18815 showed that we were missing some opportunities for
preInlineUnconditionally. The one-line fix is in the code for
GHC.Core.Opt.Simplify.Utils.preInlineUnconditionally, which now
switches off only for INLINE pragmas. I expanded
Note [Stable unfoldings and preInlineUnconditionally] to explain.
* When doing this I discovered a way in which preInlineUnconditionally
was occasionally /too/ eager. It's all explained in
Note [Occurrences in stable unfoldings] in GHC.Core.Opt.OccurAnal,
and the one-line change adding markAllMany to occAnalUnfolding.
I also got confused about what NoUserInline meant, so I've renamed
it to NoUserInlinePrag, and changed its pretty-printing slightly.
That led to soem error messate wibbling, and touches quite a few
files, but there is no change in functionality.
I did a nofib run. As expected, no significant changes.
Program Size Allocs
----------------------------------------
sphere -0.0% -0.4%
----------------------------------------
Min -0.0% -0.4%
Max -0.0% +0.0%
Geometric Mean -0.0% -0.0%
I'm allowing a max-residency increase for T10370, which seems
very irreproducible. (See comments on !4241.) There is always
sampling error for max-residency measurements; and in any case
the change shows up on some platforms but not others.
Metric Increase:
T10370
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/9a5fa43b90508d11cc8a4f87f91ec6b95da685a8">9a5fa43b</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-10-14T12:36:04-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">users-guide: Add missing :ghc-flag: directive</pre>
</li>
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compiler/GHC/Core/Opt/OccurAnal.hs
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compiler/GHC/Core/Opt/Simplify.hs
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compiler/GHC/Core/Opt/Simplify/Utils.hs
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compiler/GHC/Core/Opt/WorkWrap.hs
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compiler/GHC/Driver/Session.hs
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docs/users_guide/9.0.1-notes.rst
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<h5>The diff was not included because it is too large.</h5>
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