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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>

</h3>

<h4>

Commits:

</h4>

<ul>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f5212dfc10414212e42247c2f2dcc45252f7e1d2">f5212dfc</a></strong>

<div>

<span>by Sebastian Graf</span>

<i>at 2020-04-09T23:11:57-04:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">DmdAnal: No need to attach a StrictSig to DataCon workers

In GHC.Types.Id.Make we were giving a strictness signature to every data

constructor wrapper Id that we weren't looking at in demand analysis

anyway. We used to use its CPR info, but that has its own CPR signature

now.

`Note [Data-con worker strictness]` then felt very out of place, so I

moved it to GHC.Core.DataCon.

</pre>

</li>

</ul>

<h4>5 changed files:</h4>

<ul>

<li class="file-stats">

<a href="#6fcf64907fb5bdd93082d2d1eb94e4566e735865">

compiler/GHC/Core/DataCon.hs

</a>

</li>

<li class="file-stats">

<a href="#1419e35d2402c23209a644b054c5a67aa4463451">

compiler/GHC/Core/Op/DmdAnal.hs

</a>

</li>

<li class="file-stats">

<a href="#e3fe84599ec044fc7aacb062dada32b067732fc8">

compiler/GHC/Core/Op/Simplify.hs

</a>

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<li class="file-stats">

<a href="#d09e98aae6ad2eb59d08eac7894b68c0ab820cda">

compiler/GHC/Types/Demand.hs

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<li class="file-stats">

<a href="#261c0c5029eb34eb7436b087d77314f377ff8223">

compiler/GHC/Types/Id/Make.hs

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<h4>Changes:</h4>

<li id="6fcf64907fb5bdd93082d2d1eb94e4566e735865">

<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f5212dfc10414212e42247c2f2dcc45252f7e1d2#6fcf64907fb5bdd93082d2d1eb94e4566e735865"><strong>compiler/GHC/Core/DataCon.hs</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="614" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="614" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -614,7 +614,7 @@ data DataConRep</td>

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<pre style="margin: 0;"> <span id="LC614" class="line" lang="haskell">                                 <span class="c1" style="color: #998; font-style: italic;">-- and *including* all evidence args</span></span>

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<pre style="margin: 0;"> <span id="LC615" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="616" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<td class="diff-line-num new_line" data-linenumber="616" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC616" class="line" lang="haskell">        <span class="p">,</span> <span class="n" style="color: #333;">dcr_stricts</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">StrictnessMark</span><span class="p">]</span>  <span class="c1" style="color: #998; font-style: italic;">-- 1-1 with dcr_arg_tys</span></span>

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<td class="diff-line-num old old_line" data-linenumber="617" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<td class="diff-line-num new_line old" data-linenumber="617" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC617" class="line" lang="haskell">                <span class="c1" style="color: #998; font-style: italic;">-- See also Note [Data-con worker strictness]<span class="idiff left right"> in GHC.Types.Id.Make</span></span></span>

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<pre style="margin: 0;">+<span id="LC617" class="line" lang="haskell">                <span class="c1" style="color: #998; font-style: italic;">-- See also Note [Data-con worker strictness]</span></span>

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618

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<pre style="margin: 0;"> <span id="LC618" class="line" lang="haskell"></span>

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<td class="diff-line-num old_line" data-linenumber="619" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC619" class="line" lang="haskell">        <span class="p">,</span> <span class="n" style="color: #333;">dcr_bangs</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">HsImplBang</span><span class="p">]</span>  <span class="c1" style="color: #998; font-style: italic;">-- The actual decisions made (including failures)</span></span>

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<td class="diff-line-num old_line" data-linenumber="620" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC620" class="line" lang="haskell">                                     <span class="c1" style="color: #998; font-style: italic;">-- about the original arguments; 1-1 with orig_arg_tys</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="715" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="715" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -715,8 +715,26 @@ filterEqSpec eq_spec</td>

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<pre style="margin: 0;"> <span id="LC715" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">Outputable</span> <span class="kt" style="color: #458; font-weight: 600;">EqSpec</span> <span class="kr" style="font-weight: 600;">where</span></span>

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<td class="diff-line-num old_line" data-linenumber="716" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC716" class="line" lang="haskell">  <span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">EqSpec</span> <span class="n" style="color: #333;">tv</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="n" style="color: #333;">tv</span><span class="p">,</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC717" class="line" lang="haskell"></span>

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<pre style="margin: 0;">-<span id="LC718" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- Note [Bangs on data constructor arguments]</span></span>

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<pre style="margin: 0;">-<span id="LC719" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>

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<pre style="margin: 0;">+<span id="LC718" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- Note [Data-con worker strictness]</span></span>

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<pre style="margin: 0;">+<span id="LC719" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>

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720

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<pre style="margin: 0;">+<span id="LC720" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Notice that we do *not* say the worker Id is strict even if the data</span></span>

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721

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<pre style="margin: 0;">+<span id="LC721" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">constructor is declared strict</span></span>

</pre>

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722

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<pre style="margin: 0;">+<span id="LC722" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">     e.g.    data T = MkT !(Int,Int)</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="723" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

723

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<pre style="margin: 0;">+<span id="LC723" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Why?  Because the *wrapper* $WMkT is strict (and its unfolding has case</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="724" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

724

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<pre style="margin: 0;">+<span id="LC724" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">expressions that do the evals) but the *worker* MkT itself is not. If we</span></span>

</pre>

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725

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<pre style="margin: 0;">+<span id="LC725" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">pretend it is strict then when we see</span></span>

</pre>

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726

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<pre style="margin: 0;">+<span id="LC726" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">     case x of y -> MkT y</span></span>

</pre>

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727

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<pre style="margin: 0;">+<span id="LC727" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">the simplifier thinks that y is "sure to be evaluated" (because the worker MkT</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="728" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

728

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<pre style="margin: 0;">+<span id="LC728" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">is strict) and drops the case.  No, the workerId MkT is not strict.</span></span>

</pre>

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729

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<pre style="margin: 0;">+<span id="LC729" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC730" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">However, the worker does have StrictnessMarks.  When the simplifier sees a</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="731" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

731

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<pre style="margin: 0;">+<span id="LC731" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">pattern</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="732" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

732

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<pre style="margin: 0;">+<span id="LC732" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">     case e of MkT x -> ...</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="733" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

733

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<pre style="margin: 0;">+<span id="LC733" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">it uses the dataConRepStrictness of MkT to mark x as evaluated; but that's</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="734" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

734

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<pre style="margin: 0;">+<span id="LC734" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">fine... dataConRepStrictness comes from the data con not from the worker Id.</span></span>

</pre>

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735

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<pre style="margin: 0;">+<span id="LC735" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="736" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

736

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<pre style="margin: 0;">+<span id="LC736" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [Bangs on data constructor arguments]</span></span>

</pre>

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737

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<pre style="margin: 0;">+<span id="LC737" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>

</pre>

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720

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738

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<pre style="margin: 0;"> <span id="LC738" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Consider</span></span>

</pre>

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721

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739

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<pre style="margin: 0;"> <span id="LC739" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  data T = MkT !Int {-# UNPACK #-} !Int Bool</span></span>

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722

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740

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<pre style="margin: 0;"> <span id="LC740" class="line" lang="haskell"></span>

</pre>

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</li>

<li id="1419e35d2402c23209a644b054c5a67aa4463451">

<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f5212dfc10414212e42247c2f2dcc45252f7e1d2#1419e35d2402c23209a644b054c5a67aa4463451"><strong>compiler/GHC/Core/Op/DmdAnal.hs</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="454" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="454" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -454,7 +454,7 @@ dmdTransform :: AnalEnv         -- The strictness environment</td>

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454

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<pre style="margin: 0;"> <span id="LC454" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC455" class="line" lang="haskell"><span class="n" style="color: #333;">dmdTransform</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">var</span> <span class="n" style="color: #333;">dmd</span></span>

</pre>

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456

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456

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<pre style="margin: 0;"> <span id="LC456" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isDataConWorkId</span> <span class="n" style="color: #333;">var</span>                          <span class="c1" style="color: #998; font-style: italic;">-- Data constructor</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="457" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

457

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<td class="diff-line-num new_line old" data-linenumber="457" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC457" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dmdTransformDataConSig</span> <span class="p">(</span><span class="n" style="color: #333;">idArity</span> <span class="n" style="color: #333;">var</span><span class="p">)</span> <span class="p"><span class="idiff left">(</span></span><span class="n" style="color: #333;"><span class="idiff">idStrictness</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">var</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">dmd</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC457" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dmdTransformDataConSig</span> <span class="p">(</span><span class="n" style="color: #333;">idArity</span> <span class="n" style="color: #333;">var</span><span class="p">)</span> <span class="n" style="color: #333;">dmd</span></span>

</pre>

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458

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458

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<pre style="margin: 0;"> <span id="LC458" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="459" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

459

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<td class="diff-line-num new_line" data-linenumber="459" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

459

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<pre style="margin: 0;"> <span id="LC459" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">gopt</span> <span class="kt" style="color: #458; font-weight: 600;">Opt_DmdTxDictSel</span> <span class="p">(</span><span class="n" style="color: #333;">ae_dflags</span> <span class="n" style="color: #333;">env</span><span class="p">),</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="460" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

460

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<td class="diff-line-num new_line" data-linenumber="460" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

460

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<pre style="margin: 0;"> <span id="LC460" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">isClassOpId_maybe</span> <span class="n" style="color: #333;">var</span> <span class="c1" style="color: #998; font-style: italic;">-- Dictionary component selector</span></span>

</pre>

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<br>

</li>

<li id="e3fe84599ec044fc7aacb062dada32b067732fc8">

<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f5212dfc10414212e42247c2f2dcc45252f7e1d2#e3fe84599ec044fc7aacb062dada32b067732fc8"><strong>compiler/GHC/Core/Op/Simplify.hs</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="2758" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2758" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2758,7 +2758,7 @@ a case pattern.  This is *important*.  Consider</td>

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2758

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2758

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<pre style="margin: 0;"> <span id="LC2758" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2759" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2759

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<td class="diff-line-num new_line" data-linenumber="2759" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2759

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<pre style="margin: 0;"> <span id="LC2759" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">We really must record that b is already evaluated so that we don't</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2760" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2760

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<td class="diff-line-num new_line" data-linenumber="2760" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2760

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<pre style="margin: 0;"> <span id="LC2760" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">go and re-evaluate it when constructing the result.</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="2761" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

2761

</td>

<td class="diff-line-num new_line old" data-linenumber="2761" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC2761" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">See Note [Data-con worker strictness] in GHC.<span class="idiff left right">Types.Id.Make</span></span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="2762" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="2761" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

2761

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<pre style="margin: 0;">+<span id="LC2761" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">See Note [Data-con worker strictness] in GHC.<span class="idiff left right">Core.DataCon</span></span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2762" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2762

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<td class="diff-line-num new_line" data-linenumber="2762" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2762

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<pre style="margin: 0;"> <span id="LC2762" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="2763" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2763

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<td class="diff-line-num new_line" data-linenumber="2763" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

2763

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<pre style="margin: 0;"> <span id="LC2763" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">NB: simplLamBndrs preserves this eval info</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC2764" class="line" lang="haskell"></span>

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<li id="d09e98aae6ad2eb59d08eac7894b68c0ab820cda">

<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f5212dfc10414212e42247c2f2dcc45252f7e1d2#d09e98aae6ad2eb59d08eac7894b68c0ab820cda"><strong>compiler/GHC/Types/Demand.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">@@ -1666,17 +1666,15 @@ dmdTransformSig (StrictSig dmd_ty@(DmdType _ arg_ds _)) cd</td>

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<pre style="margin: 0;"> <span id="LC1666" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">postProcessUnsat</span> <span class="p">(</span><span class="n" style="color: #333;">peelManyCalls</span> <span class="p">(</span><span class="n" style="color: #333;">length</span> <span class="n" style="color: #333;">arg_ds</span><span class="p">)</span> <span class="n" style="color: #333;">cd</span><span class="p">)</span> <span class="n" style="color: #333;">dmd_ty</span></span>

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<pre style="margin: 0;"> <span id="LC1667" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- see Note [Demands from unsaturated function calls]</span></span>

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<pre style="margin: 0;"> <span id="LC1668" class="line" lang="haskell"></span>

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<pre style="margin: 0;">-<span id="LC1669" class="line" lang="haskell"><span class="n" style="color: #333;">dmdTransformDataConSig</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Arity</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">StrictSig</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff right"> </span><span class="kt" style="color: #458; font-weight: 600;">CleanDemand</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DmdType</span></span>

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<pre style="margin: 0;">+<span id="LC1669" class="line" lang="haskell"><span class="n" style="color: #333;">dmdTransformDataConSig</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Arity</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CleanDemand</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DmdType</span></span>

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<pre style="margin: 0;"> <span id="LC1670" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Same as dmdTransformSig but for a data constructor (worker),</span></span>

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<pre style="margin: 0;"> <span id="LC1671" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- which has a special kind of demand transformer.</span></span>

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<pre style="margin: 0;"> <span id="LC1672" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- If the constructor is saturated, we feed the demand on</span></span>

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<pre style="margin: 0;"> <span id="LC1673" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- the result into the constructor arguments.</span></span>

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<pre style="margin: 0;">-<span id="LC1674" class="line" lang="haskell"><span class="n" style="color: #333;">dmdTransformDataConSig</span> <span class="n" style="color: #333;">arity</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StrictSig</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">DmdType</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">con_res</span><span class="p">))</span></span>

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<pre style="margin: 0;">-<span id="LC1675" class="line" lang="haskell">                             <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">JD</span> <span class="p">{</span> <span class="n" style="color: #333;">sd</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">str</span><span class="p">,</span> <span class="n" style="color: #333;">ud</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">abs</span> <span class="p">})</span></span>

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<pre style="margin: 0;">+<span id="LC1674" class="line" lang="haskell"><span class="n" style="color: #333;">dmdTransformDataConSig</span> <span class="n" style="color: #333;">arity</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">JD</span> <span class="p">{</span> <span class="n" style="color: #333;">sd</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">str</span><span class="p">,</span> <span class="n" style="color: #333;">ud</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">abs</span> <span class="p">})</span></span>

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<pre style="margin: 0;"> <span id="LC1675" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">str_dmds</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">go_str</span> <span class="n" style="color: #333;">arity</span> <span class="n" style="color: #333;">str</span></span>

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<pre style="margin: 0;"> <span id="LC1676" class="line" lang="haskell">  <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">abs_dmds</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">go_abs</span> <span class="n" style="color: #333;">arity</span> <span class="n" style="color: #333;">abs</span></span>

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<pre style="margin: 0;">-<span id="LC1678" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">DmdType</span> <span class="n" style="color: #333;">emptyDmdEnv</span> <span class="p">(</span><span class="n" style="color: #333;">mkJointDmds</span> <span class="n" style="color: #333;">str_dmds</span> <span class="n" style="color: #333;">abs_dmds</span><span class="p">)</span> <span class="n" style="color: #333;">con_res</span></span>

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<td class="diff-line-num new_line old" data-linenumber="1677" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC1679" class="line" lang="haskell">                <span class="c1" style="color: #998; font-style: italic;">-- Must remember whether it's a product, hence con_res, not TopRes</span></span>

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<pre style="margin: 0;">+<span id="LC1677" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">DmdType</span> <span class="n" style="color: #333;">emptyDmdEnv</span> <span class="p">(</span><span class="n" style="color: #333;">mkJointDmds</span> <span class="n" style="color: #333;">str_dmds</span> <span class="n" style="color: #333;">abs_dmds</span><span class="p">)</span> <span class="n" style="color: #333;">topDiv</span></span>

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<pre style="margin: 0;"> <span id="LC1678" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC1679" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span>   <span class="c1" style="color: #998; font-style: italic;">-- Not saturated</span></span>

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<pre style="margin: 0;"> <span id="LC1680" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nopDmdType</span></span>

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</li>

<li id="261c0c5029eb34eb7436b087d77314f377ff8223">

<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/f5212dfc10414212e42247c2f2dcc45252f7e1d2#261c0c5029eb34eb7436b087d77314f377ff8223"><strong>compiler/GHC/Types/Id/Make.hs</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="506" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

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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">@@ -506,10 +506,9 @@ mkDataConWorkId wkr_name data_con</td>

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<pre style="margin: 0;"> <span id="LC506" class="line" lang="haskell">    <span class="n" style="color: #333;">tycon</span>  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dataConTyCon</span> <span class="n" style="color: #333;">data_con</span>  <span class="c1" style="color: #998; font-style: italic;">-- The representation TyCon</span></span>

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<td class="diff-line-num old_line" data-linenumber="507" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC507" class="line" lang="haskell">    <span class="n" style="color: #333;">wkr_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dataConRepType</span> <span class="n" style="color: #333;">data_con</span></span>

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<pre style="margin: 0;"> <span id="LC508" class="line" lang="haskell"></span>

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<pre style="margin: 0;">-<span id="LC509" class="line" lang="haskell">    <span class="idiff left right">    </span><span class="c1" style="color: #998; font-style: italic;">----------- Workers for data types --------------</span></span>

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<pre style="margin: 0;">+<span id="LC509" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">----------- Workers for data types --------------</span></span>

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<pre style="margin: 0;"> <span id="LC510" class="line" lang="haskell">    <span class="n" style="color: #333;">alg_wkr_info</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">noCafIdInfo</span></span>

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<pre style="margin: 0;"> <span id="LC511" class="line" lang="haskell">                   <span class="p">`</span><span class="n" style="color: #333;">setArityInfo</span><span class="p">`</span>          <span class="n" style="color: #333;">wkr_arity</span></span>

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<pre style="margin: 0;">-<span id="LC512" class="line" lang="haskell">                   <span class="p">`</span><span class="n" style="color: #333;">setStrictnessInfo</span><span class="p">`</span>     <span class="n" style="color: #333;">wkr_sig</span></span>

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<td class="diff-line-num old_line" data-linenumber="513" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC512" class="line" lang="haskell">                   <span class="p">`</span><span class="n" style="color: #333;">setCprInfo</span><span class="p">`</span>            <span class="n" style="color: #333;">mkCprSig</span> <span class="n" style="color: #333;">wkr_arity</span> <span class="p">(</span><span class="n" style="color: #333;">dataConCPR</span> <span class="n" style="color: #333;">data_con</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC513" class="line" lang="haskell">                   <span class="p">`</span><span class="n" style="color: #333;">setUnfoldingInfo</span><span class="p">`</span>      <span class="n" style="color: #333;">evaldUnfolding</span>  <span class="c1" style="color: #998; font-style: italic;">-- Record that it's evaluated,</span></span>

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<td class="diff-line-num old_line" data-linenumber="515" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

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<pre style="margin: 0;"> <span id="LC514" class="line" lang="haskell">                                                           <span class="c1" style="color: #998; font-style: italic;">-- even if arity = 0</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="518" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="517" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>

<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -518,27 +517,7 @@ mkDataConWorkId wkr_name data_con</td>

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<pre style="margin: 0;"> <span id="LC517" class="line" lang="haskell">                     <span class="c1" style="color: #998; font-style: italic;">-- setNeverLevPoly</span></span>

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<pre style="margin: 0;"> <span id="LC518" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC519" class="line" lang="haskell">    <span class="n" style="color: #333;">wkr_arity</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dataConRepArity</span> <span class="n" style="color: #333;">data_con</span></span>

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<pre style="margin: 0;">-<span id="LC521" class="line" lang="haskell">    <span class="n" style="color: #333;">wkr_sig</span>   <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkClosedStrictSig</span> <span class="p">(</span><span class="n" style="color: #333;">replicate</span> <span class="n" style="color: #333;">wkr_arity</span> <span class="n" style="color: #333;">topDmd</span><span class="p">)</span> <span class="n" style="color: #333;">topDiv</span></span>

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<pre style="margin: 0;">-<span id="LC522" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">--      Note [Data-con worker strictness]</span></span>

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<pre style="margin: 0;">-<span id="LC523" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- Notice that we do *not* say the worker Id is strict</span></span>

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<pre style="margin: 0;">-<span id="LC524" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- even if the data constructor is declared strict</span></span>

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<pre style="margin: 0;">-<span id="LC525" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">--      e.g.    data T = MkT !(Int,Int)</span></span>

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<pre style="margin: 0;">-<span id="LC526" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- Why?  Because the *wrapper* $WMkT is strict (and its unfolding has</span></span>

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<pre style="margin: 0;">-<span id="LC527" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- case expressions that do the evals) but the *worker* MkT itself is</span></span>

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<pre style="margin: 0;">-<span id="LC528" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">--  not. If we pretend it is strict then when we see</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC529" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">--      case x of y -> MkT y</span></span>

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<pre style="margin: 0;">-<span id="LC530" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- the simplifier thinks that y is "sure to be evaluated" (because</span></span>

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<pre style="margin: 0;">-<span id="LC531" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- the worker MkT is strict) and drops the case.  No, the workerId</span></span>

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<pre style="margin: 0;">-<span id="LC532" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- MkT is not strict.</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC533" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">--</span></span>

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<pre style="margin: 0;">-<span id="LC534" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- However, the worker does have StrictnessMarks.  When the simplifier</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC535" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- sees a pattern</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC536" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">--      case e of MkT x -> ...</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC537" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- it uses the dataConRepStrictness of MkT to mark x as evaluated;</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="538" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

538

</td>

<td class="diff-line-num new_line old" data-linenumber="520" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC538" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- but that's fine... dataConRepStrictness comes from the data con</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="539" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

539

</td>

<td class="diff-line-num new_line old" data-linenumber="520" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC539" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- not from the worker Id.</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="540" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

540

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<td class="diff-line-num new_line old" data-linenumber="520" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC540" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="541" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

541

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<td class="diff-line-num new_line old" data-linenumber="520" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">

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<pre style="margin: 0;">-<span id="LC541" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">----------- Workers for newtypes --------------</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="542" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

</td>

<td class="diff-line-num new new_line" data-linenumber="520" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">

520

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<pre style="margin: 0;">+<span id="LC520" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">----------- Workers for newtypes --------------</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="542" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

542

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<td class="diff-line-num new_line" data-linenumber="521" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

521

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<pre style="margin: 0;"> <span id="LC521" class="line" lang="haskell">    <span class="n" style="color: #333;">univ_tvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dataConUnivTyVars</span> <span class="n" style="color: #333;">data_con</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="543" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

543

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<td class="diff-line-num new_line" data-linenumber="522" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

522

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<pre style="margin: 0;"> <span id="LC522" class="line" lang="haskell">    <span class="n" style="color: #333;">arg_tys</span>  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dataConRepArgTys</span>  <span class="n" style="color: #333;">data_con</span>  <span class="c1" style="color: #998; font-style: italic;">-- Should be same as dataConOrigArgTys</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="544" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

544

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<td class="diff-line-num new_line" data-linenumber="523" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">

523

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<pre style="margin: 0;"> <span id="LC523" class="line" lang="haskell">    <span class="n" style="color: #333;">nt_work_info</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">noCafIdInfo</span>          <span class="c1" style="color: #998; font-style: italic;">-- The NoCaf-ness is set by noCafIdInfo</span></span>

</pre>

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