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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/de139cc496c0e0110e252a1208ae346f47f8061e">de139cc4</a></strong>
<div>
<span>by Artem Pelenitsyn</span>
<i>at 2020-07-12T02:53:20-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">add reproducer for #15630
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c4de6a7a5c6433ae8c4df8a9fa09fbd9f3bbd0bf">c4de6a7a</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-07-12T02:53:55-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Give Uniq[D]FM a phantom type for its key.
This fixes #17667 and should help to avoid such issues going forward.
The changes are mostly mechanical in nature. With two notable
exceptions.
* The register allocator.
The register allocator references registers by distinct uniques.
However they come from the types of VirtualReg, Reg or Unique in
various places. As a result we sometimes cast the key type of the
map and use functions which operate on the now typed map but take
a raw Unique as actual key. The logic itself has not changed it
just becomes obvious where we do so now.
* <Type>Env Modules.
As an example a ClassEnv is currently queried using the types `Class`,
`Name`, and `TyCon`. This is safe since for a distinct class value all
these expressions give the same unique.
getUnique cls
getUnique (classTyCon cls)
getUnique (className cls)
getUnique (tcName $ classTyCon cls)
This is for the most part contained within the modules defining the
interface. However it requires us to play dirty when we are given a
`Name` to lookup in a `UniqFM Class a` map. But again the logic did
not change and it's for the most part hidden behind the Env Module.
Some of these cases could be avoided by refactoring but this is left
for future work.
We also bump the haddock submodule as it uses UniqFM.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5273367429132c9fcbecaf227a5efc75d1ccb7d9">52733674</a></strong>
<div>
<span>by Aaron Allen</span>
<i>at 2020-07-13T03:00:24-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Warn about empty Char enumerations (#18402)
Currently the "Enumeration is empty" warning (-Wempty-enumerations)
only fires for numeric literals. This patch adds support for `Char`
literals so that enumerating an empty list of `Char`s will also
trigger the warning.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/78cb743f5915a24efbc3369e9bb5f478e9a1b5b4">78cb743f</a></strong>
<div>
<span>by Stefan Schulze Frielinghaus</span>
<i>at 2020-07-13T03:00:25-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">hadrian: build check-ppr dynamic if GHC is build dynamic
Fixes #18361
</pre>
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<h4>30 changed files:</h4>
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<a href="#d95fdf6575459444666f72b2281534e0558a4ba0">
compiler/GHC/Builtin/Utils.hs
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<a href="#066085df29cc928ac539d8feae6e5215cbbf1e14">
compiler/GHC/Cmm/LayoutStack.hs
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<li class="file-stats">
<a href="#71e696f452eb493722d70306c6f304fc9b2f6a95">
compiler/GHC/Cmm/Parser.y
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<li class="file-stats">
<a href="#b1390f6749e1a2dddcae35f88d55623ea6269f56">
compiler/GHC/Cmm/Sink.hs
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<a href="#10b61652f9817945bb54ccf8fc40f8a664ca3c30">
compiler/GHC/CmmToAsm.hs
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<a href="#5986ebaacfa99d264abfd2f7ef19d99a64db720f">
compiler/GHC/CmmToAsm/BlockLayout.hs
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<a href="#ea29061dab1b843e0ea9294afc614998f3a8d08f">
compiler/GHC/CmmToAsm/Monad.hs
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<a href="#eb63fd2d9f8f64c1063f9ce3e162f92c2e6e508c">
compiler/GHC/CmmToAsm/Reg/Graph.hs
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<a href="#b5d9809f48ef349a168fb08742fa95fb2a059129">
compiler/GHC/CmmToAsm/Reg/Graph/Coalesce.hs
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<a href="#02f4cb4badaefd6ed6f1ae3ff38a357c449fc286">
compiler/GHC/CmmToAsm/Reg/Graph/Spill.hs
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<a href="#3aba9ceb20d68f25343fe3a27b2b7a4f8fea68da">
compiler/GHC/CmmToAsm/Reg/Graph/SpillClean.hs
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<a href="#18fcc4c56813c879ea69a2e6b2bdf6b09dd037c5">
compiler/GHC/CmmToAsm/Reg/Graph/SpillCost.hs
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<a href="#23fa440e58d1f384d18650b52802ad6d03891572">
compiler/GHC/CmmToAsm/Reg/Graph/Stats.hs
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<a href="#83a3b2df5c77503c3a8c6df05a7654333d30cac3">
compiler/GHC/CmmToAsm/Reg/Linear.hs
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<a href="#e7e32ef13a93a68891f700047f89c45df0e3772d">
compiler/GHC/CmmToAsm/Reg/Linear/Base.hs
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<a href="#6b7e521fe89077442c3d86c888eb96793606049a">
compiler/GHC/CmmToAsm/Reg/Linear/JoinToTargets.hs
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<a href="#a25615433d8186f543ea64f55fdf156b7b1e6996">
compiler/GHC/CmmToAsm/Reg/Linear/StackMap.hs
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<a href="#62e26243bb502b18583ce19f1a921417090459c7">
compiler/GHC/CmmToAsm/Reg/Linear/Stats.hs
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<li class="file-stats">
<a href="#b4cadffdafb6a1f441fede8639ba742ae903afca">
compiler/GHC/CmmToAsm/Reg/Liveness.hs
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<a href="#d0fd0c4522f53657c4f3e9d6433bfc05f0e303df">
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compiler/GHC/CmmToAsm/Reg/Utils.hs
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<a href="#522ba674004d5ebf69a7ec80b0d7c765e08b60cc">
compiler/GHC/CmmToAsm/X86/RegInfo.hs
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<li class="file-stats">
<a href="#b5ac041c7f79084a7a7626eda4cdadda3457d235">
compiler/GHC/CmmToLlvm/Base.hs
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<a href="#91648438362e5a35363d2bb7abb04016dedd7d7e">
compiler/GHC/Core/FamInstEnv.hs
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<a href="#5596bb0f228bd2a308c4391df97375ae879430a8">
compiler/GHC/Core/InstEnv.hs
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<a href="#bac3d5159a5688007de3aa3f5c4e50569677b347">
compiler/GHC/Core/Opt/OccurAnal.hs
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<a href="#b6a5ba32bafb8fbda933538b3007e755fef6f101">
compiler/GHC/Core/Opt/SpecConstr.hs
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<li class="file-stats">
<a href="#846e2566b022c9a12a5978ac7934d5b019fbea5c">
compiler/GHC/Core/Tidy.hs
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<li class="file-stats">
<a href="#4a9feb2597023098f09413c03e42957a43170ceb">
compiler/GHC/Data/FastString/Env.hs
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<a href="#ca7dcde4476755d3db8afbbfd2a7b09f499a605b">
compiler/GHC/Data/Graph/Base.hs
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<li class="file-stats">
<a href="#937a39dca562f090f912637f78379d3c3b2eeb73">
compiler/GHC/Data/Graph/Color.hs
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<h5>The diff was not included because it is too large.</h5>
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