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Marge Bot pushed to branch master at <a href="https://gitlab.haskell.org/ghc/ghc" style="color: #1068bf;">Glasgow Haskell Compiler / GHC</a>
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Commits:
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<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/13d627bbd0bc3dd30d672de341aa7f471be0aa2c" style="color: #1068bf;">13d627bb</a></strong>
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<span> by Vladislav Zavialov </span> <i> at 2022-11-25T04:39:04-05:00 </i>
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<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.8125rem; color: #303030; position: relative; font-family: "Menlo", "DejaVu Sans Mono", "Liberation Mono", "Consolas", "Ubuntu Mono", "Courier New", "andale mono", "lucida console", monospace; word-break: break-all; word-wrap: break-word; background-color: #fafafa; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dbdbdb;'>Print unticked promoted data constructors (#20531)
Before this patch, GHC unconditionally printed ticks before promoted
data constructors:
ghci> type T = True -- unticked (user-written)
ghci> :kind! T
T :: Bool
= 'True -- ticked (compiler output)
After this patch, GHC prints ticks only when necessary:
ghci> type F = False -- unticked (user-written)
ghci> :kind! F
F :: Bool
= False -- unticked (compiler output)
ghci> data False -- introduce ambiguity
ghci> :kind! F
F :: Bool
= 'False -- ticked by necessity (compiler output)
The old behavior can be enabled by -fprint-redundant-promotion-ticks.
Summary of changes:
* Rename PrintUnqualified to NamePprCtx
* Add QueryPromotionTick to it
* Consult the GlobalRdrEnv to decide whether to print a tick (see mkPromTick)
* Introduce -fprint-redundant-promotion-ticks
Co-authored-by: Artyom Kuznetsov <hi@wzrd.ht>
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30 changed files:
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compiler/GHC.hs
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compiler/GHC/Core/Lint.hs
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compiler/GHC/Core/Opt/Pipeline.hs
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compiler/GHC/Driver/Config/Core/Lint.hs
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compiler/GHC/HsToCore.hs
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compiler/GHC/HsToCore/Monad.hs
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compiler/GHC/HsToCore/Pmc/Utils.hs
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compiler/GHC/Iface/Errors.hs
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compiler/GHC/Iface/Load.hs
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compiler/GHC/Iface/Type.hs
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compiler/GHC/Types/Error.hs
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compiler/GHC/Types/Name/Ppr.hs
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compiler/GHC/Utils/Outputable.hs
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