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<h3>
Marge Bot pushed to branch master
at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
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<h4>
Commits:
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<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/9648d680b4b07d48cf8741e0847abf07b95c7c1d">9648d680</a></strong>
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<span>by Sylvain Henry</span>
<i>at 2020-10-19T18:16:58-04:00</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Remove pdocPrec
pdocPrec was only used in GHC.Cmm.DebugBlock.pprUnwindExpr, so remove
it. OutputableP becomes a one-function class which might be better for
performance.
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<h4>2 changed files:</h4>
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<li class="file-stats">
<a href="#92b713d88390e6ea489e24b6cff8a3960384c0d0">
compiler/GHC/Cmm/DebugBlock.hs
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<a href="#d3cf57b6a5ebc234dc7689db38ef9b6cf2259c0f">
compiler/GHC/Utils/Outputable.hs
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<h4>Changes:</h4>
<li id="92b713d88390e6ea489e24b6cff8a3960384c0d0">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/9648d680b4b07d48cf8741e0847abf07b95c7c1d#92b713d88390e6ea489e24b6cff8a3960384c0d0"><strong>compiler/GHC/Cmm/DebugBlock.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -5,6 +5,7 @@</td>
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<pre style="margin: 0;"> <span id="LC5" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE FlexibleInstances #-}</span></span>
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<pre style="margin: 0;"> <span id="LC6" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE FlexibleContexts #-}</span></span>
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<pre style="margin: 0;"> <span id="LC7" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE UndecidableInstances #-}</span></span>
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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE LambdaCase #-}</span></span>
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<pre style="margin: 0;"> <span id="LC9" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC10" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC11" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# OPTIONS_GHC -Wno-incomplete-uni-patterns #-}</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -520,18 +521,22 @@ data UnwindExpr = UwConst !Int -- ^ literal value</td>
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<pre style="margin: 0;"> <span id="LC521" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">deriving</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Eq</span><span class="p">)</span></span>
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521
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522
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<pre style="margin: 0;"> <span id="LC522" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC523" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">OutputableP</span> <span class="n" style="color: #333;">env</span> <span class="kt" style="color: #458; font-weight: 600;">CLabel</span> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">OutputableP</span> <span class="n" style="color: #333;">env</span> <span class="kt" style="color: #458; font-weight: 600;">UnwindExpr</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">-<span id="LC523" class="line" lang="haskell"> <span class="n" style="color: #333;">pdocPrec</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UwConst</span> <span class="n" style="color: #333;">i</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">i</span></span>
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524
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<pre style="margin: 0;">-<span id="LC524" class="line" lang="haskell"> <span class="n" style="color: #333;">pdocPrec</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UwReg</span> <span class="n" style="color: #333;">g</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">g</span></span>
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525
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<pre style="margin: 0;">-<span id="LC525" class="line" lang="haskell"> <span class="n" style="color: #333;">pdocPrec</span> <span class="n" style="color: #333;">p</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UwReg</span> <span class="n" style="color: #333;">g</span> <span class="n" style="color: #333;">x</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pdocPrec</span> <span class="n" style="color: #333;">p</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UwPlus</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UwReg</span> <span class="n" style="color: #333;">g</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UwConst</span> <span class="n" style="color: #333;">x</span><span class="p">))</span></span>
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<pre style="margin: 0;">-<span id="LC526" class="line" lang="haskell"> <span class="n" style="color: #333;">pdocPrec</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UwDeref</span> <span class="n" style="color: #333;">e</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">char</span> <span class="sc" style="color: #d14;">'*'</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">pdocPrec</span> <span class="mi" style="color: #099;">3</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">e</span></span>
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<pre style="margin: 0;">-<span id="LC527" class="line" lang="haskell"> <span class="n" style="color: #333;">pdocPrec</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UwLabel</span> <span class="n" style="color: #333;">l</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pdocPrec</span> <span class="mi" style="color: #099;">3</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">l</span></span>
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<pre style="margin: 0;">-<span id="LC528" class="line" lang="haskell"> <span class="n" style="color: #333;">pdocPrec</span> <span class="n" style="color: #333;">p</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UwPlus</span> <span class="n" style="color: #333;">e0</span> <span class="n" style="color: #333;">e1</span><span class="p">)</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">p</span> <span class="o" style="font-weight: 600;"><=</span> <span class="mi" style="color: #099;">0</span></span>
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<pre style="margin: 0;">-<span id="LC529" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pdocPrec</span> <span class="mi" style="color: #099;">0</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">e0</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">char</span> <span class="sc" style="color: #d14;">'+'</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">pdocPrec</span> <span class="mi" style="color: #099;">0</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">e1</span></span>
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<pre style="margin: 0;">-<span id="LC530" class="line" lang="haskell"> <span class="n" style="color: #333;">pdocPrec</span> <span class="n" style="color: #333;">p</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UwMinus</span> <span class="n" style="color: #333;">e0</span> <span class="n" style="color: #333;">e1</span><span class="p">)</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">p</span> <span class="o" style="font-weight: 600;"><=</span> <span class="mi" style="color: #099;">0</span></span>
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<pre style="margin: 0;">-<span id="LC531" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pdocPrec</span> <span class="mi" style="color: #099;">1</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">e0</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">char</span> <span class="sc" style="color: #d14;">'-'</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">pdocPrec</span> <span class="mi" style="color: #099;">1</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">e1</span></span>
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<pre style="margin: 0;">-<span id="LC532" class="line" lang="haskell"> <span class="n" style="color: #333;">pdocPrec</span> <span class="n" style="color: #333;">p</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UwTimes</span> <span class="n" style="color: #333;">e0</span> <span class="n" style="color: #333;">e1</span><span class="p">)</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">p</span> <span class="o" style="font-weight: 600;"><=</span> <span class="mi" style="color: #099;">1</span></span>
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<pre style="margin: 0;">-<span id="LC533" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pdocPrec</span> <span class="mi" style="color: #099;">2</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">e0</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">char</span> <span class="sc" style="color: #d14;">'*'</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">pdocPrec</span> <span class="mi" style="color: #099;">2</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">e1</span></span>
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<pre style="margin: 0;">-<span id="LC534" class="line" lang="haskell"> <span class="n" style="color: #333;">pdocPrec</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">other</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">parens</span> <span class="p">(</span><span class="n" style="color: #333;">pdocPrec</span> <span class="mi" style="color: #099;">0</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">other</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC524" class="line" lang="haskell"> <span class="n" style="color: #333;">pdoc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pprUnwindExpr</span> <span class="mi" style="color: #099;">0</span></span>
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<pre style="margin: 0;">+<span id="LC525" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC526" class="line" lang="haskell"><span class="n" style="color: #333;">pprUnwindExpr</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">OutputableP</span> <span class="n" style="color: #333;">env</span> <span class="kt" style="color: #458; font-weight: 600;">CLabel</span> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">Rational</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">env</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UnwindExpr</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span></span>
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<pre style="margin: 0;">+<span id="LC527" class="line" lang="haskell"><span class="n" style="color: #333;">pprUnwindExpr</span> <span class="n" style="color: #333;">p</span> <span class="n" style="color: #333;">env</span> <span class="o" style="font-weight: 600;">=</span> <span class="nf" style="color: #900; font-weight: 600;">\</span><span class="kr" style="font-weight: 600;">case</span></span>
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<pre style="margin: 0;">+<span id="LC528" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">UwConst</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">i</span></span>
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<pre style="margin: 0;">+<span id="LC529" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">UwReg</span> <span class="n" style="color: #333;">g</span> <span class="mi" style="color: #099;">0</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">g</span></span>
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<pre style="margin: 0;">+<span id="LC530" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">UwReg</span> <span class="n" style="color: #333;">g</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">pprUnwindExpr</span> <span class="n" style="color: #333;">p</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UwPlus</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UwReg</span> <span class="n" style="color: #333;">g</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UwConst</span> <span class="n" style="color: #333;">x</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC531" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">UwDeref</span> <span class="n" style="color: #333;">e</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">char</span> <span class="sc" style="color: #d14;">'*'</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">pprUnwindExpr</span> <span class="mi" style="color: #099;">3</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">e</span></span>
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<pre style="margin: 0;">+<span id="LC532" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">UwLabel</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">pdoc</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">l</span></span>
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<pre style="margin: 0;">+<span id="LC533" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">UwPlus</span> <span class="n" style="color: #333;">e0</span> <span class="n" style="color: #333;">e1</span></span>
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<pre style="margin: 0;">+<span id="LC534" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">p</span> <span class="o" style="font-weight: 600;"><=</span> <span class="mi" style="color: #099;">0</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">pprUnwindExpr</span> <span class="mi" style="color: #099;">0</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">e0</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">char</span> <span class="sc" style="color: #d14;">'+'</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">pprUnwindExpr</span> <span class="mi" style="color: #099;">0</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">e1</span></span>
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<pre style="margin: 0;">+<span id="LC535" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">UwMinus</span> <span class="n" style="color: #333;">e0</span> <span class="n" style="color: #333;">e1</span></span>
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536
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<pre style="margin: 0;">+<span id="LC536" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">p</span> <span class="o" style="font-weight: 600;"><=</span> <span class="mi" style="color: #099;">0</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">pprUnwindExpr</span> <span class="mi" style="color: #099;">1</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">e0</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">char</span> <span class="sc" style="color: #d14;">'-'</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">pprUnwindExpr</span> <span class="mi" style="color: #099;">1</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">e1</span></span>
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537
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<pre style="margin: 0;">+<span id="LC537" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">UwTimes</span> <span class="n" style="color: #333;">e0</span> <span class="n" style="color: #333;">e1</span></span>
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538
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<pre style="margin: 0;">+<span id="LC538" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">p</span> <span class="o" style="font-weight: 600;"><=</span> <span class="mi" style="color: #099;">1</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">pprUnwindExpr</span> <span class="mi" style="color: #099;">2</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">e0</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">char</span> <span class="sc" style="color: #d14;">'*'</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">pprUnwindExpr</span> <span class="mi" style="color: #099;">2</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">e1</span></span>
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539
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<pre style="margin: 0;">+<span id="LC539" class="line" lang="haskell"> <span class="n" style="color: #333;">other</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">parens</span> <span class="p">(</span><span class="n" style="color: #333;">pprUnwindExpr</span> <span class="mi" style="color: #099;">0</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">other</span><span class="p">)</span></span>
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535
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540
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<pre style="margin: 0;"> <span id="LC540" class="line" lang="haskell"></span>
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536
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541
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<pre style="margin: 0;"> <span id="LC541" class="line" lang="haskell"><span class="cd">-- | Conversion of Cmm expressions to unwind expressions. We check for</span></span>
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542
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<pre style="margin: 0;"> <span id="LC542" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- unsupported operator usages and simplify the expression as far as</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/9648d680b4b07d48cf8741e0847abf07b95c7c1d#d3cf57b6a5ebc234dc7689db38ef9b6cf2259c0f"><strong>compiler/GHC/Utils/Outputable.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1045,12 +1045,6 @@ instance Outputable Extension where</td>
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1045
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<pre style="margin: 0;"> <span id="LC1045" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [The OutputableP class]</span></span>
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1046
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1046
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<pre style="margin: 0;"> <span id="LC1046" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">class</span> <span class="kt" style="color: #458; font-weight: 600;">OutputableP</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">a</span> <span class="kr" style="font-weight: 600;">where</span></span>
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1047
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1047
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<pre style="margin: 0;"> <span id="LC1047" class="line" lang="haskell"> <span class="n" style="color: #333;">pdoc</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">env</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span></span>
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1048
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<pre style="margin: 0;">-<span id="LC1048" class="line" lang="haskell"> <span class="n" style="color: #333;">pdocPrec</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Rational</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">env</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span></span>
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1049
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<pre style="margin: 0;">-<span id="LC1049" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- 0 binds least tightly</span></span>
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1050
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<pre style="margin: 0;">-<span id="LC1050" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- We use Rational because there is always a</span></span>
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1051
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<pre style="margin: 0;">-<span id="LC1051" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Rational between any other two Rationals</span></span>
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1052
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<pre style="margin: 0;">-<span id="LC1052" class="line" lang="haskell"> <span class="n" style="color: #333;">pdoc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pdocPrec</span> <span class="mi" style="color: #099;">0</span></span>
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1053
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<pre style="margin: 0;">-<span id="LC1053" class="line" lang="haskell"> <span class="n" style="color: #333;">pdocPrec</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pdoc</span></span>
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1054
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1048
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<pre style="margin: 0;"> <span id="LC1048" class="line" lang="haskell"></span>
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1055
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1049
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<pre style="margin: 0;"> <span id="LC1049" class="line" lang="haskell"><span class="cd">-- | Wrapper for types having a Outputable instance when an OutputableP instance</span></span>
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1056
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1050
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<pre style="margin: 0;"> <span id="LC1050" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- is required.</span></span>
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