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<h3>
Ben Gamari pushed to branch wip/T18545
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/a11c9678409b2e0a01e8aba153e094800f3641bf">a11c9678</a></strong>
<div>
<span>by Adam Sandberg Ericsson</span>
<i>at 2020-08-09T11:32:25+02:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">hadrian: depend on boot compiler version #18001
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c8873b52f6a16202c3cb839e988c1406b8f67cfe">c8873b52</a></strong>
<div>
<span>by Alan Zimmerman</span>
<i>at 2020-08-09T21:17:54-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Api Annotations : Adjust SrcSpans for prefix bang (!).
And prefix ~
(cherry picked from commit 8dbee2c578b1f642d45561be3f416119863e01eb)
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/77398b678aba45ba25932a39b7e8a7a31d0dd6f3">77398b67</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-08-09T21:18:34-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Avoid allocations in `splitAtList` (#18535)
As suspected by @simonpj in #18535, avoiding allocations in
`GHC.Utils.Misc.splitAtList` when there are no leftover arguments is
beneficial for performance:
On CI validate-x86_64-linux-deb9-hadrian:
T12227 -7%
T12545 -12.3%
T5030 -10%
T9872a -2%
T9872b -2.1%
T9872c -2.5%
Metric Decrease:
T12227
T12545
T5030
T9872a
T9872b
T9872c
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/8ba41a0f7f5a8eeb39b73d0f0041a53549c377ab">8ba41a0f</a></strong>
<div>
<span>by Felix Yan</span>
<i>at 2020-08-10T20:23:29-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Correct a typo in ghc.mk</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/1c4692641dcaca3e90116c28d012c506108b386f">1c469264</a></strong>
<div>
<span>by Felix Yan</span>
<i>at 2020-08-10T20:23:29-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Add a closing parenthesis too
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/acf537f9fefa31883b7cb28ff61b837ab7f8a44a">acf537f9</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-08-10T20:24:09-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Make splitAtList strict in its arguments
Also fix its slightly wrong comment
Metric Decrease:
T5030
T12227
T12545
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ab4d15898c03a5db6741feb2028488facf032fa4">ab4d1589</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-08-11T22:18:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">typecheck: Drop SPECIALISE pragmas when there is no unfolding
Previously the desugarer would instead fall over when it realized that
there was no unfolding for an imported function with a SPECIALISE
pragma. We now rather drop the SPECIALISE pragma and throw a warning.
Fixes #18118.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/0ac8c0a551619b52e0f151d6781b11dd66cf2110">0ac8c0a5</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-08-11T22:18:03-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">testsuite: Add test for #18118
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/c43078d7b78b4722dd30b56674c27189d2689ffe">c43078d7</a></strong>
<div>
<span>by Sven Tennie</span>
<i>at 2020-08-11T22:18:38-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Add hie.yaml to ghc-heap
This enables IDE support by haskell-language-server for ghc-heap.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f1088b3f31ceddf918a319c97557fb1f08a9a387">f1088b3f</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-08-11T22:19:15-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">testsuite: Specify metrics collected by T17516
Previously it collected everything, including "max bytes used". This is
problematic since the test makes no attempt to control for deviations in
GC timing, resulting in high variability. Fix this by only collecting
"bytes allocated".
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/accbc242e555822a2060091af7188ce6e9b0144e">accbc242</a></strong>
<div>
<span>by Sylvain Henry</span>
<i>at 2020-08-12T03:50:12-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">DynFlags: disentangle Outputable
- put panic related functions into GHC.Utils.Panic
- put trace related functions using DynFlags in GHC.Driver.Ppr
One step closer making Outputable fully independent of DynFlags.
Bump haddock submodule
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/db6dd810eb7986a39657f7f028f1f4de92b321dd">db6dd810</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-08-12T03:50:48-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">testsuite: Increase tolerance of T16916
T16916 (testing #16916) has been slightly fragile in CI due to its
reliance on CPU times. While it's hard to see how to eliminate
the time-dependence entirely, we can nevertheless make it more tolerant.
Fixes #16966.
</pre>
</li>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/77386e6c35b2c0a01ae25a5f2d926e6b0dcd072b">77386e6c</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2020-08-12T15:32:39-04:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">parser: Suggest ImportQualifiedPost in prepositive import warning
As suggested in #18545.
</pre>
</li>
</ul>
<h4>30 changed files:</h4>
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<a href="#d0d96a6d03668aeab20ebe05e2c4ccb798c7e64c">
compiler/GHC.hs
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<li class="file-stats">
<a href="#377cfd14c1f92357465df995ec6537b074051322">
compiler/GHC/Builtin/Types.hs
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<a href="#8a5cd068459120cddf3814e7b9e02003b87647ba">
compiler/GHC/Builtin/Types/Prim.hs
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<li class="file-stats">
<a href="#8dc7109003a77f8a82e987dc1de31466aa956174">
compiler/GHC/Builtin/Uniques.hs
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<a href="#d95fdf6575459444666f72b2281534e0558a4ba0">
compiler/GHC/Builtin/Utils.hs
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<li class="file-stats">
<a href="#2f6f8d6d05acc04b08fff94df4b3996c65b87892">
compiler/GHC/ByteCode/Asm.hs
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<a href="#db697f6aea9f93f1583f1d5c62d25570a1e07f73">
compiler/GHC/Cmm/CLabel.hs
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<a href="#d088ba20f051734394bf7ca283f33ed8127bc8ab">
compiler/GHC/Cmm/CallConv.hs
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<a href="#806448db91cc2906ebcc088107220a663d3d43eb">
compiler/GHC/Cmm/CommonBlockElim.hs
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<a href="#92b713d88390e6ea489e24b6cff8a3960384c0d0">
compiler/GHC/Cmm/DebugBlock.hs
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<a href="#56e23d78cfece2c83f03ed9b9a8ce9b20be26462">
compiler/GHC/Cmm/Expr.hs
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<a href="#2d3721ad8de95e1144493ca545db846672cb109f">
compiler/GHC/Cmm/Info/Build.hs
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<a href="#066085df29cc928ac539d8feae6e5215cbbf1e14">
compiler/GHC/Cmm/LayoutStack.hs
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<a href="#95111d27913460e138e20c87f610b61c3745ab2b">
compiler/GHC/Cmm/Liveness.hs
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<a href="#00c27365316e033b00cc3ed3854ac8714d25a2b5">
compiler/GHC/Cmm/Opt.hs
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<a href="#71e696f452eb493722d70306c6f304fc9b2f6a95">
compiler/GHC/Cmm/Parser.y
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<a href="#00d7e888201d1d21d9b428cc9fd4aea68631c109">
compiler/GHC/Cmm/Ppr/Decl.hs
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<a href="#06534118b13fde308672bb803fca91a8a50ded0c">
compiler/GHC/Cmm/Ppr/Expr.hs
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<a href="#29a1593e7281c8a9103a19e3a7562e2365e23b47">
compiler/GHC/Cmm/ProcPoint.hs
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<li class="file-stats">
<a href="#072618a3250e1148569c2d2e0c05e313c2f529e3">
compiler/GHC/Cmm/Switch.hs
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<a href="#7296b8b156359e17fb0fad7b82eaee2db3294144">
compiler/GHC/Cmm/Type.hs
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<a href="#f9f29a5a64a0b66967f0a7c538dbf8ad06a9f5bb">
compiler/GHC/Cmm/Utils.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="#d6e95c6ffd8955a51f59d69de7525bebd693db69">
compiler/GHC/CmmToAsm/CFG.hs
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<a href="#c1d65bce6c6501bf42d5bf890e846709b5645832">
compiler/GHC/CmmToAsm/CPrim.hs
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<a href="#b131e0d591301ee7a1c76bbd812f3d14783e934f">
compiler/GHC/CmmToAsm/Dwarf.hs
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<a href="#ae99eae1604521f8f6ef391c4ebab468f68d3cec">
compiler/GHC/CmmToAsm/Format.hs
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<a href="#ea29061dab1b843e0ea9294afc614998f3a8d08f">
compiler/GHC/CmmToAsm/Monad.hs
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<a href="#ce4acbced40df8012ccc56db501549f835fb180b">
compiler/GHC/CmmToAsm/PIC.hs
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<h5>The diff was not included because it is too large.</h5>
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