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<h3>

Sebastian Graf pushed to branch wip/refactor-pmc

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/d9a5a13bd40f89ae43ab04fce07e39b74aaef1dd">d9a5a13b</a></strong>

<div>

<span>by Sebastian Graf</span>

<i>at 2020-09-25T18:04:14+02:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Extract SharedIdEnv into its own module

It's now named `GHC.Types.Unique.SDFM.UniqSDFM`.

The implementation is more clear about its stated goals and supported

operations.

</pre>

</li>

</ul>

<h4>5 changed files:</h4>

<ul>

<li class="file-stats">

<a href="#092dafb784a8c4eeb7ab4572ab3ef35308020a00">

compiler/GHC/HsToCore/Pmc/Ppr.hs

</a>

</li>

<li class="file-stats">

<a href="#9095b3c5485a1f2f18a0a43346b7a49dfdd1f65d">

compiler/GHC/HsToCore/Pmc/Solver.hs

</a>

</li>

<li class="file-stats">

<a href="#6983b6dc1a4f225d4e72180ad45d8484d9d32931">

compiler/GHC/HsToCore/Pmc/Solver/Types.hs

</a>

</li>

<li class="file-stats">

<a href="#c7ae32e1f12713e158e621e589b371fc18571264">

<span class="new-file">

+

compiler/GHC/Types/Unique/SDFM.hs

</span>

</a>

</li>

<li class="file-stats">

<a href="#0f33fd88c617246c7f89c4477d2d1d24f942df23">

compiler/ghc.cabal.in

</a>

</li>

</ul>

<h4>Changes:</h4>

<li id="092dafb784a8c4eeb7ab4572ab3ef35308020a00">

<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d9a5a13bd40f89ae43ab04fce07e39b74aaef1dd#092dafb784a8c4eeb7ab4572ab3ef35308020a00"><strong>compiler/GHC/HsToCore/Pmc/Ppr.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">@@ -98,20 +98,20 @@ substitution to the vectors before printing them out (see function `pprOne' in</td>

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<pre style="margin: 0;"> <span id="LC98" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC99" class="line" lang="haskell"><span class="cd">-- | Extract and assigns pretty names to constraint variables with refutable</span></span>

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<pre style="margin: 0;"> <span id="LC100" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- shapes.</span></span>

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<pre style="margin: 0;">-<span id="LC101" class="line" lang="haskell"><span class="n" style="color: #333;">prettifyRefuts</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Nabla</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DIdEnv</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">SDoc</span></span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DIdEnv</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SDoc</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">PmAltCon</span><span class="p">])</span></span>

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<pre style="margin: 0;">+<span id="LC101" class="line" lang="haskell"><span class="n" style="color: #333;">prettifyRefuts</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Nabla</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DIdEnv</span> <span class="p"><span class="idiff left">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">Id</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">SDoc</span></span><span class="p"><span class="idiff right">)</span></span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DIdEnv</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SDoc</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">PmAltCon</span><span class="p">])</span></span>

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<pre style="margin: 0;"> <span id="LC102" class="line" lang="haskell"><span class="n" style="color: #333;">prettifyRefuts</span> <span class="n" style="color: #333;">nabla</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">listToUDFM_Directly</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">attach_refuts</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">udfmToList</span></span>

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<pre style="margin: 0;"> <span id="LC103" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

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<pre style="margin: 0;">-<span id="LC104" class="line" lang="haskell">    <span class="n" style="color: #333;">attach_refuts</span> <span class="p">(</span><span class="n" style="color: #333;">u</span><span class="p">,</span> <span class="n" style="color: #333;"><span class="idiff left">sdoc</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">=</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">u</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">sdoc</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">lookupRefuts</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">nabla</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">u</span></span><span class="p">))</span></span>

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<pre style="margin: 0;">+<span id="LC104" class="line" lang="haskell">    <span class="n" style="color: #333;">attach_refuts</span> <span class="p">(</span><span class="n" style="color: #333;">u</span><span class="p">,</span> <span class="p"><span class="idiff left">(</span></span><span class="n" style="color: #333;"><span class="idiff">x</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">sdoc</span></span><span class="p"><span class="idiff">))</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">=</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">u</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">sdoc</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">lookupRefuts</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">nabla</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">x</span></span><span class="p">))</span></span>

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<pre style="margin: 0;"> <span id="LC105" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC106" class="line" lang="haskell"></span>

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<pre style="margin: 0;">-<span id="LC107" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">PmPprM</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;">RWS</span> <span class="kt" style="color: #458; font-weight: 600;">Nabla</span> <span class="nb" style="color: #0086b3;">()</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">DIdEnv</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">SDoc</span></span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">SDoc</span><span class="p">])</span> <span class="n" style="color: #333;">a</span></span>

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<pre style="margin: 0;">+<span id="LC107" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">PmPprM</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;">RWS</span> <span class="kt" style="color: #458; font-weight: 600;">Nabla</span> <span class="nb" style="color: #0086b3;">()</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">DIdEnv</span> <span class="p"><span class="idiff left">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">Id</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">SDoc</span></span><span class="p"><span class="idiff right">)</span>,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">SDoc</span><span class="p">])</span> <span class="n" style="color: #333;">a</span></span>

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<pre style="margin: 0;"> <span id="LC108" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="109" 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="LC109" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Try nice names p,q,r,s,t before using the (ugly) t_i</span></span>

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<pre style="margin: 0;"> <span id="LC110" class="line" lang="haskell"><span class="n" style="color: #333;">nameList</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">SDoc</span><span class="p">]</span></span>

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<pre style="margin: 0;"> <span id="LC111" class="line" lang="haskell"><span class="n" style="color: #333;">nameList</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">text</span> <span class="p">[</span><span class="s" style="color: #d14;">"p"</span><span class="p">,</span><span class="s" style="color: #d14;">"q"</span><span class="p">,</span><span class="s" style="color: #d14;">"r"</span><span class="p">,</span><span class="s" style="color: #d14;">"s"</span><span class="p">,</span><span class="s" style="color: #d14;">"t"</span><span class="p">]</span> <span class="o" style="font-weight: 600;">++</span></span>

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<pre style="margin: 0;"> <span id="LC112" class="line" lang="haskell">            <span class="p">[</span> <span class="n" style="color: #333;">text</span> <span class="p">(</span><span class="sc" style="color: #d14;">'t'</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">show</span> <span class="n" style="color: #333;">u</span><span class="p">)</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">u</span> <span class="o" style="font-weight: 600;"><-</span> <span class="p">[(</span><span class="mi" style="color: #099;">0</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span><span class="p">)</span><span class="o" style="font-weight: 600;">..</span><span class="p">]</span> <span class="p">]</span></span>

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<pre style="margin: 0;"> <span id="LC113" class="line" lang="haskell"></span>

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<pre style="margin: 0;">-<span id="LC114" class="line" lang="haskell"><span class="n" style="color: #333;">runPmPpr</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Nabla</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">PmPprM</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">DIdEnv</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">SDoc</span></span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC114" class="line" lang="haskell"><span class="n" style="color: #333;">runPmPpr</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Nabla</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">PmPprM</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">DIdEnv</span> <span class="p"><span class="idiff left">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">Id</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">SDoc</span></span><span class="p"><span class="idiff right">)</span>)</span></span>

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<pre style="margin: 0;"> <span id="LC115" class="line" lang="haskell"><span class="n" style="color: #333;">runPmPpr</span> <span class="n" style="color: #333;">nabla</span> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">runRWS</span> <span class="n" style="color: #333;">m</span> <span class="n" style="color: #333;">nabla</span> <span class="p">(</span><span class="n" style="color: #333;">emptyDVarEnv</span><span class="p">,</span> <span class="n" style="color: #333;">nameList</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">of</span></span>

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<pre style="margin: 0;"> <span id="LC116" class="line" lang="haskell">  <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">renamings</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">),</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="n" style="color: #333;">renamings</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC117" class="line" lang="haskell"></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="122" 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">@@ -122,9 +122,9 @@ getCleanName x = do</td>

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<pre style="margin: 0;"> <span id="LC122" class="line" lang="haskell">  <span class="p">(</span><span class="n" style="color: #333;">renamings</span><span class="p">,</span> <span class="n" style="color: #333;">name_supply</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">get</span></span>

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<pre style="margin: 0;"> <span id="LC123" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">let</span> <span class="p">(</span><span class="n" style="color: #333;">clean_name</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">name_supply'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">name_supply</span></span>

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<pre style="margin: 0;"> <span id="LC124" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">lookupDVarEnv</span> <span class="n" style="color: #333;">renamings</span> <span class="n" style="color: #333;">x</span> <span class="kr" style="font-weight: 600;">of</span></span>

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125

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<pre style="margin: 0;">-<span id="LC125" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;"><span class="idiff left right">nm</span></span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">pure</span> <span class="n" style="color: #333;">nm</span></span>

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<pre style="margin: 0;">+<span id="LC125" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p"><span class="idiff left">(</span></span><span class="kr" style="font-weight: 600;"><span class="idiff">_</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">nm</span></span><span class="p"><span class="idiff right">)</span></span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">pure</span> <span class="n" style="color: #333;">nm</span></span>

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126

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<pre style="margin: 0;"> <span id="LC126" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>

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<pre style="margin: 0;">-<span id="LC127" class="line" lang="haskell">      <span class="n" style="color: #333;">put</span> <span class="p">(</span><span class="n" style="color: #333;">extendDVarEnv</span> <span class="n" style="color: #333;">renamings</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;"><span class="idiff left right">clean_name</span></span><span class="p">,</span> <span class="n" style="color: #333;">name_supply'</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC127" class="line" lang="haskell">      <span class="n" style="color: #333;">put</span> <span class="p">(</span><span class="n" style="color: #333;">extendDVarEnv</span> <span class="n" style="color: #333;">renamings</span> <span class="n" style="color: #333;">x</span> <span class="p"><span class="idiff left">(</span></span><span class="n" style="color: #333;"><span class="idiff">x</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">clean_name</span></span><span class="p"><span class="idiff right">)</span>,</span> <span class="n" style="color: #333;">name_supply'</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC128" class="line" lang="haskell">      <span class="n" style="color: #333;">pure</span> <span class="n" style="color: #333;">clean_name</span></span>

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<pre style="margin: 0;"> <span id="LC129" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC130" class="line" lang="haskell"><span class="n" style="color: #333;">checkRefuts</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Id</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">PmPprM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- the clean name if it has negative info attached</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="139" 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="139" 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">@@ -139,8 +139,8 @@ checkRefuts x = do</td>

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<pre style="margin: 0;"> <span id="LC139" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- underscores. Even with a type signature, if it's not too noisy.</span></span>

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<pre style="margin: 0;"> <span id="LC140" class="line" lang="haskell"><span class="n" style="color: #333;">pprPmVar</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">PprPrec</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Id</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">PmPprM</span> <span class="kt" style="color: #458; font-weight: 600;">SDoc</span></span>

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<pre style="margin: 0;"> <span id="LC141" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Type signature is "too noisy" by my definition if it needs to parenthesize.</span></span>

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<pre style="margin: 0;">-<span id="LC142" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- I like           "not matched: _ :: Proxy (DIdEnv <span class="idiff left right">SDoc</span>)",</span></span>

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<pre style="margin: 0;">-<span id="LC143" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- but I don't like "not matched: (_ :: stuff) (_:_) (_ :: Proxy (DIdEnv <span class="idiff left right">SDoc</span>))"</span></span>

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<td class="diff-line-num new old_line" data-linenumber="144" 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">

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<td class="diff-line-num new new_line" data-linenumber="142" 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">

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<pre style="margin: 0;">+<span id="LC142" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- I like           "not matched: _ :: Proxy (DIdEnv <span class="idiff left right">(Id, SDoc)</span>)",</span></span>

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<pre style="margin: 0;">+<span id="LC143" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- but I don't like "not matched: (_ :: stuff) (_:_) (_ :: Proxy (DIdEnv <span class="idiff left right">(Id, SDoc)</span>))"</span></span>

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<pre style="margin: 0;"> <span id="LC144" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- The useful information in the latter case is the constructor that we missed,</span></span>

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<pre style="margin: 0;"> <span id="LC145" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- not the types of the wildcards in the places that aren't matched as a result.</span></span>

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<pre style="margin: 0;"> <span id="LC146" class="line" lang="haskell"><span class="n" style="color: #333;">pprPmVar</span> <span class="n" style="color: #333;">prec</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>

</pre>

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<br>

</li>

<li id="9095b3c5485a1f2f18a0a43346b7a49dfdd1f65d">

<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d9a5a13bd40f89ae43ab04fce07e39b74aaef1dd#9095b3c5485a1f2f18a0a43346b7a49dfdd1f65d"><strong>compiler/GHC/HsToCore/Pmc/Solver.hs</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="45" 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="45" 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">@@ -45,10 +45,9 @@ import GHC.Utils.Error ( pprErrMsgBagWithLoc )</td>

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<pre style="margin: 0;"> <span id="LC45" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Utils.Misc</span></span>

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<pre style="margin: 0;"> <span id="LC46" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Utils.Panic</span></span>

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<pre style="margin: 0;"> <span id="LC47" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Data.Bag</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC48" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique</span></span>

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<pre style="margin: 0;"> <span id="LC48" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.Set</span></span>

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<pre style="margin: 0;"> <span id="LC49" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.DSet</span></span>

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<pre style="margin: 0;">-<span id="LC51" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.DFM</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC50" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.<span class="idiff left right">S</span>DFM</span></span>

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<pre style="margin: 0;"> <span id="LC51" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Id</span></span>

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<pre style="margin: 0;"> <span id="LC52" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Name</span></span>

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<pre style="margin: 0;"> <span id="LC53" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Var</span>      <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">EvVar</span><span class="p">)</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="494" 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="493" 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">@@ -494,7 +493,7 @@ emptyVarInfo x</td>

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<pre style="margin: 0;"> <span id="LC493" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC494" class="line" lang="haskell"><span class="n" style="color: #333;">lookupVarInfo</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TmState</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Id</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarInfo</span></span>

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<pre style="margin: 0;"> <span id="LC495" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- (lookupVarInfo tms x) tells what we know about 'x'</span></span>

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<pre style="margin: 0;">-<span id="LC497" class="line" lang="haskell"><span class="n" style="color: #333;">lookupVarInfo</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TmSt</span> <span class="n" style="color: #333;">env</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fromMaybe</span> <span class="p">(</span><span class="n" style="color: #333;">emptyVarInfo</span> <span class="n" style="color: #333;">x</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">lookup<span class="idiff left right">SDIE</span></span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">x</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC496" class="line" lang="haskell"><span class="n" style="color: #333;">lookupVarInfo</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TmSt</span> <span class="n" style="color: #333;">env</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fromMaybe</span> <span class="p">(</span><span class="n" style="color: #333;">emptyVarInfo</span> <span class="n" style="color: #333;">x</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">lookup<span class="idiff left right">USDFM</span></span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">x</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC497" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC498" class="line" lang="haskell"><span class="cd">-- | Like @lookupVarInfo ts x@, but @lookupVarInfo ts x = (y, vi)@ also looks</span></span>

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<pre style="margin: 0;"> <span id="LC499" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- through newtype constructors. We have @x ~ N1 (... (Nk y))@ such that the</span></span>

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<td class="diff-line-num unfold js-unfold old_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">...</td>

<td class="diff-line-num unfold js-unfold new_line" data-linenumber="520" 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">@@ -521,7 +520,7 @@ trvVarInfo f nabla@MkNabla{ nabla_tm_st = ts@TmSt{ts_facts = env} } x</td>

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<pre style="margin: 0;"> <span id="LC520" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">set_vi</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">f</span> <span class="p">(</span><span class="n" style="color: #333;">lookupVarInfo</span> <span class="n" style="color: #333;">ts</span> <span class="n" style="color: #333;">x</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC521" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

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<pre style="margin: 0;"> <span id="LC522" class="line" lang="haskell">    <span class="n" style="color: #333;">set_vi</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="n" style="color: #333;">vi'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span></span>

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<pre style="margin: 0;">-<span id="LC524" class="line" lang="haskell">      <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="n" style="color: #333;">nabla</span><span class="p">{</span> <span class="n" style="color: #333;">nabla_tm_st</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ts</span><span class="p">{</span> <span class="n" style="color: #333;">ts_facts</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;"><span class="idiff left right">setEntrySDIE</span></span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="n" style="color: #333;">vi_id</span> <span class="n" style="color: #333;">vi'</span><span class="p">)</span> <span class="n" style="color: #333;">vi'</span> <span class="p">}</span> <span class="p">})</span></span>

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<pre style="margin: 0;">+<span id="LC523" class="line" lang="haskell">      <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="n" style="color: #333;">nabla</span><span class="p">{</span> <span class="n" style="color: #333;">nabla_tm_st</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ts</span><span class="p">{</span> <span class="n" style="color: #333;">ts_facts</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;"><span class="idiff left right">addToUSDFM</span></span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="n" style="color: #333;">vi_id</span> <span class="n" style="color: #333;">vi'</span><span class="p">)</span> <span class="n" style="color: #333;">vi'</span> <span class="p">}</span> <span class="p">})</span></span>

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<pre style="margin: 0;"> <span id="LC524" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC525" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- Note [Coverage checking Newtype matches]</span></span>

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<pre style="margin: 0;"> <span id="LC526" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="554" 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="553" 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">@@ -554,14 +553,11 @@ where you can find the solution in a perhaps more digestible format.</td>

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<pre style="margin: 0;"> <span id="LC553" 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="LC554" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- * Exported utility functions querying 'Nabla'</span></span>

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<pre style="margin: 0;"> <span id="LC555" class="line" lang="haskell"></span>

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<pre style="margin: 0;">-<span id="LC557" class="line" lang="haskell"><span class="n" style="color: #333;">lookupRefuts</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Uniquable</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">k</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">=></span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">Nabla</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">k</span></span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">PmAltCon</span><span class="p">]</span></span>

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<pre style="margin: 0;">+<span id="LC556" class="line" lang="haskell"><span class="n" style="color: #333;">lookupRefuts</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Nabla</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">Id</span></span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">PmAltCon</span><span class="p">]</span></span>

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<pre style="margin: 0;"> <span id="LC557" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Unfortunately we need the extra bit of polymorphism and the unfortunate</span></span>

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<pre style="margin: 0;"> <span id="LC558" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- duplication of lookupVarInfo here.</span></span>

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<pre style="margin: 0;">-<span id="LC560" class="line" lang="haskell"><span class="n" style="color: #333;">lookupRefuts</span> <span class="kt" style="color: #458; font-weight: 600;">MkNabla</span><span class="p">{</span> <span class="n" style="color: #333;">nabla_tm_st</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ts</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TmSt</span><span class="p">{</span><span class="n" style="color: #333;">ts_facts</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SDIE</span> <span class="n" style="color: #333;">env</span><span class="p">)})</span> <span class="p">}</span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">=</span></span>

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<pre style="margin: 0;">-<span id="LC561" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">lookupUDFM_Directly</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="n" style="color: #333;">getUnique</span> <span class="n" style="color: #333;">k</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">of</span></span>

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<pre style="margin: 0;">-<span id="LC562" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">[]</span></span>

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<pre style="margin: 0;">-<span id="LC563" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Indirect</span> <span class="n" style="color: #333;">y</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">pmAltConSetElems</span> <span class="p">(</span><span class="n" style="color: #333;">vi_neg</span> <span class="p">(</span><span class="n" style="color: #333;">lookupVarInfo</span> <span class="n" style="color: #333;">ts</span> <span class="n" style="color: #333;">y</span><span class="p">))</span></span>

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<pre style="margin: 0;">-<span id="LC564" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Entry</span> <span class="n" style="color: #333;">vi</span><span class="p">)</span>   <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">pmAltConSetElems</span> <span class="p">(</span><span class="n" style="color: #333;">vi_neg</span> <span class="n" style="color: #333;">vi</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC559" class="line" lang="haskell"><span class="n" style="color: #333;">lookupRefuts</span> <span class="kt" style="color: #458; font-weight: 600;">MkNabla</span><span class="p">{</span> <span class="n" style="color: #333;">nabla_tm_st</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ts</span> <span class="p">}</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span></span>

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<pre style="margin: 0;">+<span id="LC560" class="line" lang="haskell">  <span class="n" style="color: #333;">pmAltConSetElems</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">vi_neg</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">lookupVarInfo</span> <span class="n" style="color: #333;">ts</span> <span class="n" style="color: #333;">x</span></span>

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<pre style="margin: 0;"> <span id="LC561" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC562" class="line" lang="haskell"><span class="n" style="color: #333;">isDataConSolution</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">PmAltConApp</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>

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<pre style="margin: 0;"> <span id="LC563" class="line" lang="haskell"><span class="n" style="color: #333;">isDataConSolution</span> <span class="kt" style="color: #458; font-weight: 600;">PACA</span><span class="p">{</span><span class="n" style="color: #333;">paca_con</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">PmAltConLike</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">RealDataCon</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)}</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">True</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">@@ -718,7 +714,7 @@ addBotCt nabla@MkNabla{ nabla_tm_st = ts@TmSt{ ts_facts=env } } x = do</td>

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<pre style="margin: 0;"> <span id="LC714" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">IsBot</span>    <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">pure</span> <span class="n" style="color: #333;">nabla</span> <span class="c1" style="color: #998; font-style: italic;">-- There already is x ~ ⊥. Nothing left to do</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="719" 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">

719

</td>

<td class="diff-line-num 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">

715

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<pre style="margin: 0;"> <span id="LC715" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">MaybeBot</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span>         <span class="c1" style="color: #998; font-style: italic;">-- We add x ~ ⊥</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="720" 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">

720

</td>

<td class="diff-line-num new_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">

716

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<pre style="margin: 0;"> <span id="LC716" class="line" lang="haskell">      <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">vi'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">vi</span><span class="p">{</span> <span class="n" style="color: #333;">vi_bot</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IsBot</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="721" 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">

721

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<td class="diff-line-num new_line old" data-linenumber="717" 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="LC721" class="line" lang="haskell">      <span class="n" style="color: #333;">pure</span> <span class="n" style="color: #333;">nabla</span><span class="p">{</span> <span class="n" style="color: #333;">nabla_tm_st</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ts</span><span class="p">{</span><span class="n" style="color: #333;">ts_facts</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;"><span class="idiff left right">setEntrySDIE</span></span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">y</span> <span class="n" style="color: #333;">vi'</span> <span class="p">}</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="722" 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="717" 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">

717

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<pre style="margin: 0;">+<span id="LC717" class="line" lang="haskell">      <span class="n" style="color: #333;">pure</span> <span class="n" style="color: #333;">nabla</span><span class="p">{</span> <span class="n" style="color: #333;">nabla_tm_st</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ts</span><span class="p">{</span><span class="n" style="color: #333;">ts_facts</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;"><span class="idiff left right">addToUSDFM</span></span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">y</span> <span class="n" style="color: #333;">vi'</span> <span class="p">}</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="722" 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">

722

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<td class="diff-line-num new_line" data-linenumber="718" 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">

718

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<pre style="margin: 0;"> <span id="LC718" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="723" 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">

723

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<td class="diff-line-num new_line" data-linenumber="719" 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">

719

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<pre style="margin: 0;"> <span id="LC719" class="line" lang="haskell"><span class="cd">-- | Adds the constraint @x ~/ ⊥@ to 'Nabla'. Quite similar to 'addNotConCt',</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="724" 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">

724

</td>

<td class="diff-line-num new_line" data-linenumber="720" 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">

720

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<pre style="margin: 0;"> <span id="LC720" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- but only cares for the ⊥ "constructor".</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="732" 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="728" 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">@@ -732,7 +728,7 @@ addNotBotCt nabla@MkNabla{ nabla_tm_st = ts@TmSt{ts_facts=env} } x = do</td>

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<td class="diff-line-num old_line" data-linenumber="732" 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">

732

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<td class="diff-line-num new_line" data-linenumber="728" 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">

728

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<pre style="margin: 0;"> <span id="LC728" class="line" lang="haskell">      <span class="c1" style="color: #998; font-style: italic;">-- Mark dirty for a delayed inhabitation test</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="733" 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">

733

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<td class="diff-line-num new_line" data-linenumber="729" 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">

729

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<pre style="margin: 0;"> <span id="LC729" class="line" lang="haskell">      <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">vi'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">vi</span><span class="p">{</span> <span class="n" style="color: #333;">vi_bot</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IsNotBot</span><span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="734" 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">

734

</td>

<td class="diff-line-num new_line" data-linenumber="730" 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">

730

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<pre style="margin: 0;"> <span id="LC730" class="line" lang="haskell">      <span class="n" style="color: #333;">pure</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">markDirty</span> <span class="n" style="color: #333;">y</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="735" 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">

735

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<td class="diff-line-num new_line old" data-linenumber="731" 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="LC735" class="line" lang="haskell">           <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">nabla</span><span class="p">{</span> <span class="n" style="color: #333;">nabla_tm_st</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ts</span><span class="p">{</span> <span class="n" style="color: #333;">ts_facts</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;"><span class="idiff left right">setEntrySDIE</span></span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">y</span> <span class="n" style="color: #333;">vi'</span> <span class="p">}</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num new old_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">

</td>

<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="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">nabla</span><span class="p">{</span> <span class="n" style="color: #333;">nabla_tm_st</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ts</span><span class="p">{</span> <span class="n" style="color: #333;">ts_facts</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;"><span class="idiff left right">addToUSDFM</span></span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">y</span> <span class="n" style="color: #333;">vi'</span> <span class="p">}</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="736" 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">

736

</td>

<td class="diff-line-num new_line" data-linenumber="732" 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">

732

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<pre style="margin: 0;"> <span id="LC732" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="737" 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">

737

</td>

<td class="diff-line-num new_line" data-linenumber="733" 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">

733

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<pre style="margin: 0;"> <span id="LC733" class="line" lang="haskell"><span class="cd">-- | Record a @x ~/ K@ constraint, e.g. that a particular 'Id' @x@ can't</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="738" 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">

738

</td>

<td class="diff-line-num new_line" data-linenumber="734" 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">

734

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<pre style="margin: 0;"> <span id="LC734" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- take the shape of a 'PmAltCon' @K@ in the 'Nabla' and return @Nothing@ if</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="805" 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="801" 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">@@ -805,7 +801,7 @@ addConCt nabla@MkNabla{ nabla_tm_st = ts@TmSt{ ts_facts=env } } x alt tvs args =</td>

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<td class="diff-line-num old_line" data-linenumber="805" 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">

805

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<td class="diff-line-num new_line" data-linenumber="801" 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">

801

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<pre style="margin: 0;"> <span id="LC801" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="806" 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">

806

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<td class="diff-line-num new_line" data-linenumber="802" 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">

802

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<pre style="margin: 0;"> <span id="LC802" class="line" lang="haskell">      <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">pos'</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">PACA</span> <span class="n" style="color: #333;">alt</span> <span class="n" style="color: #333;">tvs</span> <span class="n" style="color: #333;">args</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">pos</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="807" 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">

807

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<td class="diff-line-num new_line" data-linenumber="803" 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">

803

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<pre style="margin: 0;"> <span id="LC803" class="line" lang="haskell">      <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">nabla_with</span> <span class="n" style="color: #333;">bot'</span> <span class="o" style="font-weight: 600;">=</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="808" 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">

808

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<td class="diff-line-num new_line old" data-linenumber="804" 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="LC808" class="line" lang="haskell">            <span class="n" style="color: #333;">nabla</span><span class="p">{</span> <span class="n" style="color: #333;">nabla_tm_st</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ts</span><span class="p">{</span><span class="n" style="color: #333;">ts_facts</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;"><span class="idiff left right">setEntrySDIE</span></span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">x</span> <span class="p">(</span><span class="n" style="color: #333;">vi</span><span class="p">{</span><span class="n" style="color: #333;">vi_pos</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pos'</span><span class="p">,</span> <span class="n" style="color: #333;">vi_bot</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bot'</span><span class="p">})}</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="809" 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="804" 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">

804

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<pre style="margin: 0;">+<span id="LC804" class="line" lang="haskell">            <span class="n" style="color: #333;">nabla</span><span class="p">{</span> <span class="n" style="color: #333;">nabla_tm_st</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ts</span><span class="p">{</span><span class="n" style="color: #333;">ts_facts</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;"><span class="idiff left right">addToUSDFM</span></span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">x</span> <span class="p">(</span><span class="n" style="color: #333;">vi</span><span class="p">{</span><span class="n" style="color: #333;">vi_pos</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pos'</span><span class="p">,</span> <span class="n" style="color: #333;">vi_bot</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bot'</span><span class="p">})}</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="809" 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">

809

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<td class="diff-line-num new_line" data-linenumber="805" 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">

805

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<pre style="margin: 0;"> <span id="LC805" class="line" lang="haskell">      <span class="c1" style="color: #998; font-style: italic;">-- Do (2) in Note [Coverage checking Newtype matches]</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="810" 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">

810

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<td class="diff-line-num new_line" data-linenumber="806" 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">

806

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<pre style="margin: 0;"> <span id="LC806" class="line" lang="haskell">      <span class="kr" style="font-weight: 600;">case</span> <span class="p">(</span><span class="n" style="color: #333;">alt</span><span class="p">,</span> <span class="n" style="color: #333;">args</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="811" 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">

811

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<td class="diff-line-num new_line" data-linenumber="807" 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">

807

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<pre style="margin: 0;"> <span id="LC807" class="line" lang="haskell">        <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">PmAltConLike</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">RealDataCon</span> <span class="n" style="color: #333;">dc</span><span class="p">),</span> <span class="p">[</span><span class="n" style="color: #333;">y</span><span class="p">])</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isNewDataCon</span> <span class="n" style="color: #333;">dc</span> <span class="o" style="font-weight: 600;">-></span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="825" 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="821" 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">@@ -825,55 +821,27 @@ equateTys ts us =</td>

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<td class="diff-line-num old_line" data-linenumber="825" 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">

825

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<td class="diff-line-num new_line" data-linenumber="821" 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">

821

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<pre style="margin: 0;"> <span id="LC821" class="line" lang="haskell">  <span class="p">,</span> <span class="n" style="color: #333;">not</span> <span class="p">(</span><span class="n" style="color: #333;">eqType</span> <span class="n" style="color: #333;">t</span> <span class="n" style="color: #333;">u</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="826" 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">

826

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<td class="diff-line-num new_line" data-linenumber="822" 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">

822

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<pre style="margin: 0;"> <span id="LC822" class="line" lang="haskell">  <span class="p">]</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="827" 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">

827

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<td class="diff-line-num new_line" data-linenumber="823" 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">

823

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<pre style="margin: 0;"> <span id="LC823" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="828" 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">

828

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<td class="diff-line-num new_line old" data-linenumber="824" 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="LC828" class="line" lang="haskell"><span class="cd">-- | Adds a @x ~ y@ constraint by <span class="idiff left right">trying to unify two 'Id</span>'s and record the</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="829" 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="824" 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">

824

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<pre style="margin: 0;">+<span id="LC824" class="line" lang="haskell"><span class="cd">-- | Adds a @x ~ y@ constraint by <span class="idiff left right">merging the two 'VarInfo</span>'s and record the</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="829" 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">

829

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<td class="diff-line-num new_line" data-linenumber="825" 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">

825

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<pre style="margin: 0;"> <span id="LC825" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- gained knowledge in 'Nabla'.</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="830" 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">

830

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<td class="diff-line-num new_line" data-linenumber="826" 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">

826

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<pre style="margin: 0;"> <span id="LC826" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>

</pre>

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831

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<td class="diff-line-num new_line old" data-linenumber="827" 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="LC831" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Returns @Nothing@ when there's a contradiction<span class="idiff left right">. Returns @Just nabla@</span></span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="832" 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">

832

</td>

<td class="diff-line-num new_line old" data-linenumber="827" 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="LC832" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- <span class="idiff left right">when the constraint was compatible with prior facts, in which case @nabla@</span></span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="833" 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">

833

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<td class="diff-line-num new_line old" data-linenumber="827" 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="LC833" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- has integrated the knowledge from the equality constraint.</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="834" 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="827" 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">

827

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<pre style="margin: 0;">+<span id="LC827" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Returns @Nothing@ when there's a contradiction<span class="idiff left right"> while merging. Returns @Just</span></span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="834" 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="828" 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">

828

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<pre style="margin: 0;">+<span id="LC828" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- <span class="idiff left right">nabla@ when the constraint was compatible with prior facts, in which case</span></span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="834" 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="829" 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">

829

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<pre style="margin: 0;">+<span id="LC829" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- <span class="idiff left right">@nabla@ </span>has integrated the knowledge from the equality constraint.</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="834" 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">

834

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<td class="diff-line-num new_line" data-linenumber="830" 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">

830

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<pre style="margin: 0;"> <span id="LC830" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="835" 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">

835

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831

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<pre style="margin: 0;"> <span id="LC831" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [TmState invariants].</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="836" 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">

836

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<pre style="margin: 0;"> <span id="LC832" class="line" lang="haskell"><span class="n" style="color: #333;">addVarCt</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Nabla</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Id</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Id</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">MaybeT</span> <span class="kt" style="color: #458; font-weight: 600;">DsM</span> <span class="kt" style="color: #458; font-weight: 600;">Nabla</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="837" 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">

837

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<pre style="margin: 0;">-<span id="LC837" class="line" lang="haskell"><span class="n" style="color: #333;">addVarCt</span> <span class="n" style="color: #333;">nabla</span><span class="o" style="font-weight: 600;">@</span><span class="kt" style="color: #458; font-weight: 600;">MkNabla</span><span class="p">{</span> <span class="n" style="color: #333;">nabla_tm_st</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">TmSt</span><span class="p">{</span> <span class="n" style="color: #333;">ts_facts</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">env</span> <span class="p">}</span> <span class="p">}</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="838" 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">

838

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<pre style="margin: 0;">-<span id="LC838" class="line" lang="haskell">  <span class="c1" style="color: #998; font-style: italic;">-- It's important that we never @equate@ two variables of the same equivalence</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="839" 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">

839

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<pre style="margin: 0;">-<span id="LC839" class="line" lang="haskell">  <span class="c1" style="color: #998; font-style: italic;">-- class, otherwise we might get cyclic substitutions.</span></span>

</pre>

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840

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<pre style="margin: 0;">-<span id="LC840" class="line" lang="haskell">  <span class="c1" style="color: #998; font-style: italic;">-- Cf. 'extendSubstAndSolve' and</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="841" 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">

841

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<td class="diff-line-num new_line old" data-linenumber="833" 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="LC841" class="line" lang="haskell">  <span class="c1" style="color: #998; font-style: italic;">-- @testsuite/tests/pmcheck/should_compile/CyclicSubst.hs@.</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="842" 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">

842

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<pre style="margin: 0;">-<span id="LC842" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">sameRepresentativeSDIE</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pure</span> <span class="n" style="color: #333;">nabla</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="843" 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">

843

</td>

<td class="diff-line-num new_line old" data-linenumber="833" 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="LC843" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span>                      <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">equate</span> <span class="n" style="color: #333;">nabla</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="844" 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">

844

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<pre style="margin: 0;">-<span id="LC844" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="845" 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">

845

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<pre style="margin: 0;">-<span id="LC845" class="line" lang="haskell"><span class="cd">-- | @equate ts@(TmSt env) x y@ merges the equivalence classes of @x@ and @y@ by</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="846" 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">

846

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<pre style="margin: 0;">-<span id="LC846" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- adding an indirection to the environment.</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="847" 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">

847

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<pre style="margin: 0;">-<span id="LC847" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Makes sure that the positive and negative facts of @x@ and @y@ are</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="848" 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">

848

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<pre style="margin: 0;">-<span id="LC848" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- compatible.</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="849" 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">

849

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<pre style="margin: 0;">-<span id="LC849" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Preconditions: @not (sameRepresentativeSDIE env x y)@</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="850" 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">

850

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<pre style="margin: 0;">-<span id="LC850" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="851" 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">

851

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<pre style="margin: 0;">-<span id="LC851" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [TmState invariants].</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="852" 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">

852

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<pre style="margin: 0;">-<span id="LC852" class="line" lang="haskell"><span class="n" style="color: #333;">equate</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Nabla</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Id</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Id</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">MaybeT</span> <span class="kt" style="color: #458; font-weight: 600;">DsM</span> <span class="kt" style="color: #458; font-weight: 600;">Nabla</span></span>

</pre>

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853

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<pre style="margin: 0;">-<span id="LC853" class="line" lang="haskell"><span class="n" style="color: #333;">equate</span> <span class="n" style="color: #333;">nabla</span><span class="o" style="font-weight: 600;">@</span><span class="kt" style="color: #458; font-weight: 600;">MkNabla</span><span class="p">{</span> <span class="n" style="color: #333;">nabla_tm_st</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ts</span><span class="o" style="font-weight: 600;">@</span><span class="kt" style="color: #458; font-weight: 600;">TmSt</span><span class="p">{</span><span class="n" style="color: #333;">ts_facts</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">env</span><span class="p">}</span> <span class="p">}</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span></span>

</pre>

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854

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<pre style="margin: 0;">-<span id="LC854" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">ASSERT</span><span class="p">(</span> <span class="n" style="color: #333;">not</span> <span class="p">(</span><span class="n" style="color: #333;">sameRepresentativeSDIE</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span><span class="p">)</span> <span class="p">)</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="855" 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">

855

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<pre style="margin: 0;">-<span id="LC855" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">case</span> <span class="p">(</span><span class="n" style="color: #333;">lookupSDIE</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">x</span><span class="p">,</span> <span class="n" style="color: #333;">lookupSDIE</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">y</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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856

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<pre style="margin: 0;">-<span id="LC856" class="line" lang="haskell">      <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Nothing</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">pure</span> <span class="p">(</span><span class="n" style="color: #333;">nabla</span><span class="p">{</span> <span class="n" style="color: #333;">nabla_tm_st</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ts</span><span class="p">{</span> <span class="n" style="color: #333;">ts_facts</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">setIndirectSDIE</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="p">}</span> <span class="p">})</span></span>

</pre>

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857

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<pre style="margin: 0;">-<span id="LC857" class="line" lang="haskell">      <span class="p">(</span><span class="kr" style="font-weight: 600;">_</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">pure</span> <span class="p">(</span><span class="n" style="color: #333;">nabla</span><span class="p">{</span> <span class="n" style="color: #333;">nabla_tm_st</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ts</span><span class="p">{</span> <span class="n" style="color: #333;">ts_facts</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">setIndirectSDIE</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">y</span> <span class="n" style="color: #333;">x</span> <span class="p">}</span> <span class="p">})</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="858" 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">

858

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<pre style="margin: 0;">-<span id="LC858" class="line" lang="haskell">      <span class="c1" style="color: #998; font-style: italic;">-- Merge the info we have for x into the info for y</span></span>

</pre>

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859

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<pre style="margin: 0;">-<span id="LC859" 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;">vi_x</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">vi_y</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>

</pre>

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860

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<pre style="margin: 0;">-<span id="LC860" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- This assert will probably trigger at some point...</span></span>

</pre>

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861

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<pre style="margin: 0;">-<span id="LC861" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- We should decide how to break the tie</span></span>

</pre>

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862

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<pre style="margin: 0;">-<span id="LC862" class="line" lang="haskell">        <span class="kt" style="color: #458; font-weight: 600;">MASSERT2</span><span class="p">(</span> <span class="n" style="color: #333;">idType</span> <span class="p">(</span><span class="n" style="color: #333;">vi_id</span> <span class="n" style="color: #333;">vi_x</span><span class="p">)</span> <span class="p">`</span><span class="n" style="color: #333;">eqType</span><span class="p">`</span> <span class="n" style="color: #333;">idType</span> <span class="p">(</span><span class="n" style="color: #333;">vi_id</span> <span class="n" style="color: #333;">vi_y</span><span class="p">),</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Not same type"</span> <span class="p">)</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="863" 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">

863

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<pre style="margin: 0;">-<span id="LC863" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- First assume that x and y are in the same equivalence class</span></span>

</pre>

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864

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<pre style="margin: 0;">-<span id="LC864" class="line" lang="haskell">        <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">env_ind</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">setIndirectSDIE</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span></span>

</pre>

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865

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<pre style="margin: 0;">-<span id="LC865" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- Then sum up the refinement counters</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="866" 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">

866

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<pre style="margin: 0;">-<span id="LC866" class="line" lang="haskell">        <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">env_refs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">setEntrySDIE</span> <span class="n" style="color: #333;">env_ind</span> <span class="n" style="color: #333;">y</span> <span class="n" style="color: #333;">vi_y</span></span>

</pre>

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867

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<pre style="margin: 0;">-<span id="LC867" class="line" lang="haskell">        <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">nabla_refs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nabla</span><span class="p">{</span> <span class="n" style="color: #333;">nabla_tm_st</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ts</span><span class="p">{</span><span class="n" style="color: #333;">ts_facts</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">env_refs</span><span class="p">}</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="868" 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">

868

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<pre style="margin: 0;">-<span id="LC868" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- and then gradually merge every positive fact we have on x into y</span></span>

</pre>

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869

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<pre style="margin: 0;">-<span id="LC869" class="line" lang="haskell">        <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">add_fact</span> <span class="n" style="color: #333;">nabla</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">PACA</span> <span class="n" style="color: #333;">cl</span> <span class="n" style="color: #333;">tvs</span> <span class="n" style="color: #333;">args</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addConCt</span> <span class="n" style="color: #333;">nabla</span> <span class="n" style="color: #333;">y</span> <span class="n" style="color: #333;">cl</span> <span class="n" style="color: #333;">tvs</span> <span class="n" style="color: #333;">args</span></span>

</pre>

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870

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<pre style="margin: 0;">-<span id="LC870" class="line" lang="haskell">        <span class="n" style="color: #333;">nabla_pos</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">foldlM</span> <span class="n" style="color: #333;">add_fact</span> <span class="n" style="color: #333;">nabla_refs</span> <span class="p">(</span><span class="n" style="color: #333;">vi_pos</span> <span class="n" style="color: #333;">vi_x</span><span class="p">)</span></span>

</pre>

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871

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<pre style="margin: 0;">-<span id="LC871" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- Do the same for negative info</span></span>

</pre>

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872

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<pre style="margin: 0;">-<span id="LC872" class="line" lang="haskell">        <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">add_refut</span> <span class="n" style="color: #333;">nabla</span> <span class="n" style="color: #333;">nalt</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addNotConCt</span> <span class="n" style="color: #333;">nabla</span> <span class="n" style="color: #333;">y</span> <span class="n" style="color: #333;">nalt</span></span>

</pre>

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873

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<pre style="margin: 0;">-<span id="LC873" class="line" lang="haskell">        <span class="n" style="color: #333;">nabla_neg</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">foldlM</span> <span class="n" style="color: #333;">add_refut</span> <span class="n" style="color: #333;">nabla_pos</span> <span class="p">(</span><span class="n" style="color: #333;">pmAltConSetElems</span> <span class="p">(</span><span class="n" style="color: #333;">vi_neg</span> <span class="n" style="color: #333;">vi_x</span><span class="p">))</span></span>

</pre>

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874

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<pre style="margin: 0;">-<span id="LC874" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- vi_rcm will be updated in addNotConCt, so we are good to</span></span>

</pre>

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875

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<pre style="margin: 0;">-<span id="LC875" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- go!</span></span>

</pre>

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876

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<pre style="margin: 0;">-<span id="LC876" class="line" lang="haskell">        <span class="n" style="color: #333;">pure</span> <span class="n" style="color: #333;">nabla_neg</span></span>

</pre>

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833

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<pre style="margin: 0;">+<span id="LC833" class="line" lang="haskell"><span class="n" style="color: #333;">addVarCt</span> <span class="n" style="color: #333;">nabla</span><span class="o" style="font-weight: 600;">@</span><span class="kt" style="color: #458; font-weight: 600;">MkNabla</span><span class="p">{</span> <span class="n" style="color: #333;">nabla_tm_st</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ts</span><span class="o" style="font-weight: 600;">@</span><span class="kt" style="color: #458; font-weight: 600;">TmSt</span><span class="p">{</span> <span class="n" style="color: #333;">ts_facts</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">env</span> <span class="p">}</span> <span class="p">}</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="o" style="font-weight: 600;">=</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="834" 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">

834

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<pre style="margin: 0;">+<span id="LC834" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">equateUSDFM</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="835" 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">

835

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<pre style="margin: 0;">+<span id="LC835" class="line" lang="haskell">    <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Nothing</span><span class="p">,</span>   <span class="n" style="color: #333;">env'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">pure</span> <span class="p">(</span><span class="n" style="color: #333;">nabla</span><span class="p">{</span> <span class="n" style="color: #333;">nabla_tm_st</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ts</span><span class="p">{</span> <span class="n" style="color: #333;">ts_facts</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">env'</span> <span class="p">}</span> <span class="p">})</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="836" 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">

836

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<pre style="margin: 0;">+<span id="LC836" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- Add the constraints we had for x to y</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="837" 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">

837

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<pre style="margin: 0;">+<span id="LC837" 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;">vi_x</span><span class="p">,</span> <span class="n" style="color: #333;">env'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="838" 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">

838

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<pre style="margin: 0;">+<span id="LC838" class="line" lang="haskell">      <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">nabla_equated</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nabla</span><span class="p">{</span> <span class="n" style="color: #333;">nabla_tm_st</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ts</span><span class="p">{</span><span class="n" style="color: #333;">ts_facts</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">env'</span><span class="p">}</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="839" 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">

839

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<pre style="margin: 0;">+<span id="LC839" class="line" lang="haskell">      <span class="c1" style="color: #998; font-style: italic;">-- and then gradually merge every positive fact we have on x into y</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="840" 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">

840

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<pre style="margin: 0;">+<span id="LC840" class="line" lang="haskell">      <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">add_pos</span> <span class="n" style="color: #333;">nabla</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">PACA</span> <span class="n" style="color: #333;">cl</span> <span class="n" style="color: #333;">tvs</span> <span class="n" style="color: #333;">args</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addConCt</span> <span class="n" style="color: #333;">nabla</span> <span class="n" style="color: #333;">y</span> <span class="n" style="color: #333;">cl</span> <span class="n" style="color: #333;">tvs</span> <span class="n" style="color: #333;">args</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="841" 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">

841

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<pre style="margin: 0;">+<span id="LC841" class="line" lang="haskell">      <span class="n" style="color: #333;">nabla_pos</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">foldlM</span> <span class="n" style="color: #333;">add_pos</span> <span class="n" style="color: #333;">nabla_equated</span> <span class="p">(</span><span class="n" style="color: #333;">vi_pos</span> <span class="n" style="color: #333;">vi_x</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="842" 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">

842

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<pre style="margin: 0;">+<span id="LC842" class="line" lang="haskell">      <span class="c1" style="color: #998; font-style: italic;">-- Do the same for negative info</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="843" 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">

843

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<pre style="margin: 0;">+<span id="LC843" class="line" lang="haskell">      <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">add_neg</span> <span class="n" style="color: #333;">nabla</span> <span class="n" style="color: #333;">nalt</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addNotConCt</span> <span class="n" style="color: #333;">nabla</span> <span class="n" style="color: #333;">y</span> <span class="n" style="color: #333;">nalt</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="844" 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">

844

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<pre style="margin: 0;">+<span id="LC844" class="line" lang="haskell">      <span class="n" style="color: #333;">foldlM</span> <span class="n" style="color: #333;">add_neg</span> <span class="n" style="color: #333;">nabla_pos</span> <span class="p">(</span><span class="n" style="color: #333;">pmAltConSetElems</span> <span class="p">(</span><span class="n" style="color: #333;">vi_neg</span> <span class="n" style="color: #333;">vi_x</span><span class="p">))</span></span>

</pre>

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877

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<td class="diff-line-num new_line" data-linenumber="845" 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">

845

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<pre style="margin: 0;"> <span id="LC845" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="878" 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">

878

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<td class="diff-line-num new_line" data-linenumber="846" 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">

846

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<pre style="margin: 0;"> <span id="LC846" class="line" lang="haskell"><span class="cd">-- | Inspects a 'PmCoreCt' @let x = e@ by recording constraints for @x@ based</span></span>

</pre>

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879

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<td class="diff-line-num new_line" data-linenumber="847" 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">

847

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<pre style="margin: 0;"> <span id="LC847" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- on the shape of the 'CoreExpr' @e@. Examples:</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1221" 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="1189" 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">@@ -1221,11 +1189,11 @@ traverseDirty f ts@TmSt{ts_facts = env, ts_dirty = dirty} =</td>

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1221

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<td class="diff-line-num new_line" data-linenumber="1189" 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">

1189

</td>

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<pre style="margin: 0;"> <span id="LC1189" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="kt" style="color: #458; 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;">pure</span> <span class="n" style="color: #333;">ts</span><span class="p">{</span><span class="n" style="color: #333;">ts_facts</span><span class="o" style="font-weight: 600;">=</span><span class="n" style="color: #333;">env</span><span class="p">}</span></span>

</pre>

</td>

</tr>

<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="1222" 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">

1222

</td>

<td class="diff-line-num new_line" data-linenumber="1190" 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">

1190

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC1190" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="n" style="color: #333;">x</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">xs</span><span class="p">)</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="kr" style="font-weight: 600;">do</span></span>

</pre>

</td>

</tr>

<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="1223" 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">

1223

</td>

<td class="diff-line-num new_line" data-linenumber="1191" 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">

1191

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC1191" class="line" lang="haskell">      <span class="n" style="color: #333;">vi'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">f</span> <span class="p">(</span><span class="n" style="color: #333;">lookupVarInfo</span> <span class="n" style="color: #333;">ts</span> <span class="n" style="color: #333;">x</span><span class="p">)</span></span>

</pre>

</td>

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<tr class="line_holder old" id="" style="line-height: 1.6;">

<td class="diff-line-num old old_line" data-linenumber="1224" 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">

1224

</td>

<td class="diff-line-num new_line old" data-linenumber="1192" 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">

</td>

<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">

<pre style="margin: 0;">-<span id="LC1224" class="line" lang="haskell">      <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">xs</span> <span class="p">(</span><span class="n" style="color: #333;"><span class="idiff left right">setEntrySDIE</span></span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">vi'</span><span class="p">)</span></span>

</pre>

</td>

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<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="1225" 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="1192" 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">

1192

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1192" class="line" lang="haskell">      <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">xs</span> <span class="p">(</span><span class="n" style="color: #333;"><span class="idiff left right">addToUSDFM</span></span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">vi'</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="1225" 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">

1225

</td>

<td class="diff-line-num new_line" data-linenumber="1193" 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">

1193

</td>

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<pre style="margin: 0;"> <span id="LC1193" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1226" 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">

1226

</td>

<td class="diff-line-num new_line" data-linenumber="1194" 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">

1194

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<pre style="margin: 0;"> <span id="LC1194" class="line" lang="haskell"><span class="n" style="color: #333;">traverseAll</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Monad</span> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">=></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">VarInfo</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">m</span> <span class="kt" style="color: #458; font-weight: 600;">VarInfo</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TmState</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">m</span> <span class="kt" style="color: #458; font-weight: 600;">TmState</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1227" 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">

1227

</td>

<td class="diff-line-num new_line" data-linenumber="1195" 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">

1195

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<pre style="margin: 0;"> <span id="LC1195" class="line" lang="haskell"><span class="n" style="color: #333;">traverseAll</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">ts</span><span class="o" style="font-weight: 600;">@</span><span class="kt" style="color: #458; font-weight: 600;">TmSt</span><span class="p">{</span><span class="n" style="color: #333;">ts_facts</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">env</span><span class="p">}</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>

</pre>

</td>

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<tr class="line_holder old" id="" style="line-height: 1.6;">

<td class="diff-line-num old old_line" data-linenumber="1228" 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">

1228

</td>

<td class="diff-line-num new_line old" data-linenumber="1196" 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">

</td>

<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">

<pre style="margin: 0;">-<span id="LC1228" class="line" lang="haskell">  <span class="n" style="color: #333;">env'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">traverse<span class="idiff left right">SDIE</span></span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">env</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="1229" 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="1196" 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">

1196

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<pre style="margin: 0;">+<span id="LC1196" class="line" lang="haskell">  <span class="n" style="color: #333;">env'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">traverse<span class="idiff left right">USDFM</span></span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">env</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1229" 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">

1229

</td>

<td class="diff-line-num new_line" data-linenumber="1197" 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">

1197

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<pre style="margin: 0;"> <span id="LC1197" class="line" lang="haskell">  <span class="n" style="color: #333;">pure</span> <span class="n" style="color: #333;">ts</span><span class="p">{</span><span class="n" style="color: #333;">ts_facts</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">env'</span><span class="p">}</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1230" 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">

1230

</td>

<td class="diff-line-num new_line" data-linenumber="1198" 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">

1198

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC1198" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="1231" 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">

1231

</td>

<td class="diff-line-num new_line" data-linenumber="1199" 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">

1199

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<pre style="margin: 0;"> <span id="LC1199" class="line" lang="haskell"><span class="cd">-- | Makes sure the given 'Nabla' is still inhabited, by trying to instantiate</span></span>

</pre>

</td>

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<br>

</li>

<li id="6983b6dc1a4f225d4e72180ad45d8484d9d32931">

<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d9a5a13bd40f89ae43ab04fce07e39b74aaef1dd#6983b6dc1a4f225d4e72180ad45d8484d9d32931"><strong>compiler/GHC/HsToCore/Pmc/Solver/Types.hs</strong></a>

<hr>

<table class="code white" style="font-family: monospace; font-size: 90%;" bgcolor="#fff" width="100%" cellpadding="0" cellspacing="0">

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="14" 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="14" 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">@@ -14,10 +14,6 @@ module GHC.HsToCore.Pmc.Solver.Types (</td>

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<td class="diff-line-num old_line" data-linenumber="14" 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">

14

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<td class="diff-line-num new_line" data-linenumber="14" 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">

14

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<pre style="margin: 0;"> <span id="LC14" class="line" lang="haskell">        <span class="kt" style="color: #458; font-weight: 600;">BotInfo</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="kt" style="color: #458; font-weight: 600;">PmAltConApp</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="kt" style="color: #458; font-weight: 600;">VarInfo</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="kt" style="color: #458; font-weight: 600;">TmState</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="kt" style="color: #458; font-weight: 600;">TyState</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="15" 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">

15

</td>

<td class="diff-line-num new_line" data-linenumber="15" 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">

15

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<pre style="margin: 0;"> <span id="LC15" class="line" lang="haskell">        <span class="kt" style="color: #458; font-weight: 600;">Nabla</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="kt" style="color: #458; font-weight: 600;">Nablas</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="nf" style="color: #900; font-weight: 600;">initNablas</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="16" 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="16" 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="LC16" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="17" 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="17" 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="LC17" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- ** A 'DIdEnv' where entries may be shared</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="18" 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="17" 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="LC18" class="line" lang="haskell">        <span class="kt" style="color: #458; font-weight: 600;">Shared</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="kt" style="color: #458; font-weight: 600;">SharedDIdEnv</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="nf" style="color: #900; font-weight: 600;">emptySDIE</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">lookupSDIE</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">sameRepresentativeSDIE</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="19" 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="17" 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="LC19" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">setIndirectSDIE</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">setEntrySDIE</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">traverseSDIE</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">entriesSDIE</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num new_line old" data-linenumber="17" 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="LC20" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="17" 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="LC17" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- ** Caching residual COMPLETE sets</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="22" 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="18" 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="LC18" class="line" lang="haskell">        <span class="kt" style="color: #458; font-weight: 600;">ConLikeSet</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">ResidualCompleteMatches</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="nf" style="color: #900; font-weight: 600;">getRcm</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">isRcmInitialised</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="19" 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="LC19" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="46" 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="42" 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">@@ -46,10 +42,9 @@ import GHC.Utils.Misc</td>

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<pre style="margin: 0;"> <span id="LC42" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Data.Bag</span></span>

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<pre style="margin: 0;"> <span id="LC43" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Data.FastString</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC44" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Id</span></span>

</pre>

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<td class="diff-line-num new_line old" data-linenumber="45" 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="LC49" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Var.Env</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC45" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Var.Set</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC46" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.DSet</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC52" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.DFM</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="53" 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">

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<td class="diff-line-num new new_line" data-linenumber="47" 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">

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<pre style="margin: 0;">+<span id="LC47" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.<span class="idiff left right">S</span>DFM</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC48" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Name</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC49" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.DataCon</span></span>

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<pre style="margin: 0;"> <span id="LC50" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.ConLike</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="135" 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="130" 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">@@ -135,7 +130,7 @@ initTyState = TySt 0 emptyInert</td>

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<pre style="margin: 0;"> <span id="LC130" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [TmState invariants] in "GHC.HsToCore.Pmc.Solver".</span></span>

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<pre style="margin: 0;"> <span id="LC131" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">TmState</span></span>

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<pre style="margin: 0;"> <span id="LC132" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">TmSt</span></span>

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<pre style="margin: 0;">-<span id="LC138" class="line" lang="haskell">  <span class="p">{</span> <span class="n" style="color: #333;">ts_facts</span> <span class="o" style="font-weight: 600;">::</span> <span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">SharedDIdEnv</span></span> <span class="kt" style="color: #458; font-weight: 600;">VarInfo</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC133" class="line" lang="haskell">  <span class="p">{</span> <span class="n" style="color: #333;">ts_facts</span> <span class="o" style="font-weight: 600;">::</span> <span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">UniqSDFM</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">Id</span></span> <span class="kt" style="color: #458; font-weight: 600;">VarInfo</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC134" class="line" lang="haskell">  <span class="c1" style="color: #998; font-style: italic;">-- ^ Facts about term variables. Deterministic env, so that we generate</span></span>

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<pre style="margin: 0;"> <span id="LC135" class="line" lang="haskell">  <span class="c1" style="color: #998; font-style: italic;">-- deterministic error messages.</span></span>

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<pre style="margin: 0;"> <span id="LC136" class="line" lang="haskell">  <span class="p">,</span> <span class="n" style="color: #333;">ts_reps</span>  <span class="o" style="font-weight: 600;">::</span> <span class="o" style="font-weight: 600;">!</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CoreMap</span> <span class="kt" style="color: #458; font-weight: 600;">Id</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC240" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC241" class="line" lang="haskell"><span class="cd">-- | Initial state of the term oracle.</span></span>

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<pre style="margin: 0;"> <span id="LC242" class="line" lang="haskell"><span class="n" style="color: #333;">initTmState</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TmState</span></span>

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<pre style="margin: 0;">-<span id="LC248" class="line" lang="haskell"><span class="n" style="color: #333;">initTmState</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">TmSt</span> <span class="n" style="color: #333;">emptySDIE</span> <span class="n" style="color: #333;">emptyCoreMap</span> <span class="n" style="color: #333;">emptyDVarSet</span></span>

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<pre style="margin: 0;">-<span id="LC249" class="line" lang="haskell"></span>

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<pre style="margin: 0;">-<span id="LC250" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- ** A 'DIdEnv' where entries may be shared</span></span>

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<pre style="margin: 0;">-<span id="LC251" class="line" lang="haskell"></span>

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<pre style="margin: 0;">-<span id="LC252" class="line" lang="haskell"><span class="cd">-- | Either @Indirect x@, meaning the value is represented by that of @x@, or</span></span>

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<pre style="margin: 0;">-<span id="LC253" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- an @Entry@ containing containing the actual value it represents.</span></span>

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<pre style="margin: 0;">-<span id="LC254" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">Shared</span> <span class="n" style="color: #333;">a</span></span>

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<pre style="margin: 0;">-<span id="LC255" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Indirect</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">Id</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="256" 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="LC256" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Entry</span> <span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">a</span></span>

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<td class="diff-line-num old old_line" data-linenumber="257" 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="LC257" class="line" lang="haskell"></span>

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<pre style="margin: 0;">-<span id="LC258" class="line" lang="haskell"><span class="cd">-- | A 'DIdEnv' in which entries can be shared by multiple 'Id's.</span></span>

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<pre style="margin: 0;">-<span id="LC259" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Merge equivalence classes of two Ids by 'setIndirectSDIE' and set the entry</span></span>

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<pre style="margin: 0;">-<span id="LC260" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- of an Id with 'setEntrySDIE'.</span></span>

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<pre style="margin: 0;">-<span id="LC261" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">newtype</span> <span class="kt" style="color: #458; font-weight: 600;">SharedDIdEnv</span> <span class="n" style="color: #333;">a</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC262" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">SDIE</span> <span class="p">{</span> <span class="n" style="color: #333;">unSDIE</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">DIdEnv</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Shared</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="p">}</span></span>

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<pre style="margin: 0;">-<span id="LC263" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">-<span id="LC264" class="line" lang="haskell"><span class="n" style="color: #333;">emptySDIE</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SharedDIdEnv</span> <span class="n" style="color: #333;">a</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC265" class="line" lang="haskell"><span class="n" style="color: #333;">emptySDIE</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">SDIE</span> <span class="n" style="color: #333;">emptyDVarEnv</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC266" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">-<span id="LC267" class="line" lang="haskell"><span class="n" style="color: #333;">lookupReprAndEntrySDIE</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SharedDIdEnv</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;">Id</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Id</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>

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<pre style="margin: 0;">-<span id="LC268" class="line" lang="haskell"><span class="n" style="color: #333;">lookupReprAndEntrySDIE</span> <span class="n" style="color: #333;">sdie</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SDIE</span> <span class="n" style="color: #333;">env</span><span class="p">)</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">lookupDVarEnv</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">x</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC269" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">Nothing</span>           <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">x</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC270" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Indirect</span> <span class="n" style="color: #333;">y</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">lookupReprAndEntrySDIE</span> <span class="n" style="color: #333;">sdie</span> <span class="n" style="color: #333;">y</span></span>

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<pre style="margin: 0;">-<span id="LC271" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Entry</span> <span class="n" style="color: #333;">a</span><span class="p">)</span>    <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">x</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>

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<pre style="margin: 0;">-<span id="LC272" class="line" lang="haskell"></span>

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<pre style="margin: 0;">-<span id="LC273" class="line" lang="haskell"><span class="cd">-- | @lookupSDIE env x@ looks up an entry for @x@, looking through all</span></span>

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<pre style="margin: 0;">-<span id="LC274" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- 'Indirect's until it finds a shared 'Entry'.</span></span>

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<pre style="margin: 0;">-<span id="LC275" class="line" lang="haskell"><span class="n" style="color: #333;">lookupSDIE</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SharedDIdEnv</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;">Id</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="n" style="color: #333;">a</span></span>

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<pre style="margin: 0;">-<span id="LC276" class="line" lang="haskell"><span class="n" style="color: #333;">lookupSDIE</span> <span class="n" style="color: #333;">sdie</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">snd</span> <span class="p">(</span><span class="n" style="color: #333;">lookupReprAndEntrySDIE</span> <span class="n" style="color: #333;">sdie</span> <span class="n" style="color: #333;">x</span><span class="p">)</span></span>

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<pre style="margin: 0;">-<span id="LC277" class="line" lang="haskell"></span>

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<pre style="margin: 0;">-<span id="LC278" class="line" lang="haskell"><span class="cd">-- | Check if two variables are part of the same equivalence class.</span></span>

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<pre style="margin: 0;">-<span id="LC279" class="line" lang="haskell"><span class="n" style="color: #333;">sameRepresentativeSDIE</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SharedDIdEnv</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;">Id</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Id</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>

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<pre style="margin: 0;">-<span id="LC280" class="line" lang="haskell"><span class="n" style="color: #333;">sameRepresentativeSDIE</span> <span class="n" style="color: #333;">sdie</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="o" style="font-weight: 600;">=</span></span>

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<pre style="margin: 0;">-<span id="LC281" class="line" lang="haskell">  <span class="n" style="color: #333;">fst</span> <span class="p">(</span><span class="n" style="color: #333;">lookupReprAndEntrySDIE</span> <span class="n" style="color: #333;">sdie</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;">fst</span> <span class="p">(</span><span class="n" style="color: #333;">lookupReprAndEntrySDIE</span> <span class="n" style="color: #333;">sdie</span> <span class="n" style="color: #333;">y</span><span class="p">)</span></span>

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<pre style="margin: 0;">-<span id="LC282" class="line" lang="haskell"></span>

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<pre style="margin: 0;">-<span id="LC283" class="line" lang="haskell"><span class="cd">-- | @setIndirectSDIE env x y@ sets @x@'s 'Entry' to @Indirect y@, thereby</span></span>

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<pre style="margin: 0;">-<span id="LC284" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- merging @x@'s equivalence class into @y@'s. This will discard all info on</span></span>

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<pre style="margin: 0;">-<span id="LC285" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- @x@!</span></span>

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<pre style="margin: 0;">-<span id="LC286" class="line" lang="haskell"><span class="n" style="color: #333;">setIndirectSDIE</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SharedDIdEnv</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;">Id</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Id</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SharedDIdEnv</span> <span class="n" style="color: #333;">a</span></span>

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<pre style="margin: 0;">-<span id="LC287" class="line" lang="haskell"><span class="n" style="color: #333;">setIndirectSDIE</span> <span class="n" style="color: #333;">sdie</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SDIE</span> <span class="n" style="color: #333;">env</span><span class="p">)</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="o" style="font-weight: 600;">=</span></span>

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<pre style="margin: 0;">-<span id="LC288" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">SDIE</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">extendDVarEnv</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="n" style="color: #333;">fst</span> <span class="p">(</span><span class="n" style="color: #333;">lookupReprAndEntrySDIE</span> <span class="n" style="color: #333;">sdie</span> <span class="n" style="color: #333;">x</span><span class="p">))</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Indirect</span> <span class="n" style="color: #333;">y</span><span class="p">)</span></span>

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<pre style="margin: 0;">-<span id="LC289" class="line" lang="haskell"></span>

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<pre style="margin: 0;">-<span id="LC290" class="line" lang="haskell"><span class="cd">-- | @setEntrySDIE env x a@ sets the 'Entry' @x@ is associated with to @a@,</span></span>

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<pre style="margin: 0;">-<span id="LC291" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- thereby modifying its whole equivalence class.</span></span>

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<pre style="margin: 0;">-<span id="LC292" class="line" lang="haskell"><span class="n" style="color: #333;">setEntrySDIE</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SharedDIdEnv</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;">Id</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;">SharedDIdEnv</span> <span class="n" style="color: #333;">a</span></span>

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<pre style="margin: 0;">-<span id="LC293" class="line" lang="haskell"><span class="n" style="color: #333;">setEntrySDIE</span> <span class="n" style="color: #333;">sdie</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SDIE</span> <span class="n" style="color: #333;">env</span><span class="p">)</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span></span>

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<pre style="margin: 0;">-<span id="LC294" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">SDIE</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">extendDVarEnv</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="n" style="color: #333;">fst</span> <span class="p">(</span><span class="n" style="color: #333;">lookupReprAndEntrySDIE</span> <span class="n" style="color: #333;">sdie</span> <span class="n" style="color: #333;">x</span><span class="p">))</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Entry</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>

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<pre style="margin: 0;">-<span id="LC295" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">-<span id="LC296" class="line" lang="haskell"><span class="n" style="color: #333;">entriesSDIE</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SharedDIdEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="n" style="color: #333;">a</span><span class="p">]</span></span>

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<pre style="margin: 0;">-<span id="LC297" class="line" lang="haskell"><span class="n" style="color: #333;">entriesSDIE</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SDIE</span> <span class="n" style="color: #333;">env</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mapMaybe</span> <span class="n" style="color: #333;">preview_entry</span> <span class="p">(</span><span class="n" style="color: #333;">eltsUDFM</span> <span class="n" style="color: #333;">env</span><span class="p">)</span></span>

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<pre style="margin: 0;">-<span id="LC298" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

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<pre style="margin: 0;">-<span id="LC299" class="line" lang="haskell">    <span class="n" style="color: #333;">preview_entry</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Entry</span> <span class="n" style="color: #333;">e</span><span class="p">)</span> <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;">e</span></span>

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<pre style="margin: 0;">-<span id="LC300" class="line" lang="haskell">    <span class="n" style="color: #333;">preview_entry</span> <span class="kr" style="font-weight: 600;">_</span>         <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>

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<pre style="margin: 0;">-<span id="LC301" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">-<span id="LC302" class="line" lang="haskell"><span class="n" style="color: #333;">traverseSDIE</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">b</span> <span class="n" style="color: #333;">f</span><span class="o" style="font-weight: 600;">.</span> <span class="kt" style="color: #458; font-weight: 600;">Applicative</span> <span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">=></span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">b</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SharedDIdEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">f</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SharedDIdEnv</span> <span class="n" style="color: #333;">b</span><span class="p">)</span></span>

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<pre style="margin: 0;">-<span id="LC303" class="line" lang="haskell"><span class="n" style="color: #333;">traverseSDIE</span> <span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fmap</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SDIE</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">listToUDFM_Directly</span><span class="p">)</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">traverse</span> <span class="n" style="color: #333;">g</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">udfmToList</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">unSDIE</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="304" 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="LC304" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="305" 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="LC305" class="line" lang="haskell">    <span class="n" style="color: #333;">g</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Unique</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Shared</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">f</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Unique</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Shared</span> <span class="n" style="color: #333;">b</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC306" class="line" lang="haskell">    <span class="n" style="color: #333;">g</span> <span class="p">(</span><span class="n" style="color: #333;">u</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Indirect</span> <span class="n" style="color: #333;">y</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pure</span> <span class="p">(</span><span class="n" style="color: #333;">u</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Indirect</span> <span class="n" style="color: #333;">y</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="307" 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="LC307" class="line" lang="haskell">    <span class="n" style="color: #333;">g</span> <span class="p">(</span><span class="n" style="color: #333;">u</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Entry</span> <span class="n" style="color: #333;">a</span><span class="p">)</span>    <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC308" class="line" lang="haskell">        <span class="n" style="color: #333;">a'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">a</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="309" 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="LC309" class="line" lang="haskell">        <span class="n" style="color: #333;">pure</span> <span class="p">(</span><span class="n" style="color: #333;">u</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Entry</span> <span class="n" style="color: #333;">a'</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="310" 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="LC310" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="311" 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="LC311" 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="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">Outputable</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Shared</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="312" 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="LC312" 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;">Indirect</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;">ppr</span> <span class="n" style="color: #333;">x</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="313" 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="LC313" 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;">Entry</span> <span class="n" style="color: #333;">a</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;">a</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="314" 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="243" 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="LC314" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="315" 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="LC315" 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="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">Outputable</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SharedDIdEnv</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="316" 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="LC316" 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;">SDIE</span> <span class="n" style="color: #333;">env</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;">env</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="243" 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">

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<pre style="margin: 0;">+<span id="LC243" class="line" lang="haskell"><span class="n" style="color: #333;">initTmState</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">TmSt</span> <span class="n" style="color: #333;">emptyUSDFM</span> <span class="n" style="color: #333;">emptyCoreMap</span> <span class="n" style="color: #333;">emptyDVarSet</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC244" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="318" 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">

318

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245

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<pre style="margin: 0;"> <span id="LC245" class="line" lang="haskell"><span class="cd">-- | A data type that caches for the 'VarInfo' of @x@ the results of querying</span></span>

</pre>

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319

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246

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<pre style="margin: 0;"> <span id="LC246" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- 'dsGetCompleteMatches' and then striking out all occurrences of @K@ for</span></span>

</pre>

</td>

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<br>

</li>

<li id="c7ae32e1f12713e158e621e589b371fc18571264">

<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d9a5a13bd40f89ae43ab04fce07e39b74aaef1dd#c7ae32e1f12713e158e621e589b371fc18571264"><strong>compiler/GHC/Types/Unique/SDFM.hs</strong></a>

<hr>

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1

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<pre style="margin: 0;">+<span id="LC1" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE ScopedTypeVariables #-}</span></span>

</pre>

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2

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE ApplicativeDo #-}</span></span>

</pre>

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3

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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# OPTIONS_GHC -Wall #-}</span></span>

</pre>

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4

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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"></span>

</pre>

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5

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<pre style="margin: 0;">+<span id="LC5" class="line" lang="haskell"><span class="cd">-- | Like a 'UniqDFM', but maintains equivalence classes of keys sharing the</span></span>

</pre>

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6

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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- same entry. See 'UniqSDFM'.</span></span>

</pre>

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7

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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">GHC.Types.Unique.SDFM</span> <span class="p">(</span></span>

</pre>

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8

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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- * Unique-keyed, /shared/, deterministic mappings</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="9" 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">

9

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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell">        <span class="kt" style="color: #458; font-weight: 600;">UniqSDFM</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="0" 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">

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<td class="diff-line-num new new_line" data-linenumber="10" 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">

10

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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell"></span>

</pre>

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11

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<pre style="margin: 0;">+<span id="LC11" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">emptyUSDFM</span><span class="p">,</span></span>

</pre>

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12

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<pre style="margin: 0;">+<span id="LC12" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">lookupUSDFM</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="13" 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">

13

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<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">equateUSDFM</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">addToUSDFM</span><span class="p">,</span></span>

</pre>

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14

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<pre style="margin: 0;">+<span id="LC14" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">traverseUSDFM</span></span>

</pre>

</td>

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<td class="diff-line-num new new_line" data-linenumber="15" 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">

15

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<pre style="margin: 0;">+<span id="LC15" class="line" lang="haskell">    <span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

</td>

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16

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<pre style="margin: 0;">+<span id="LC16" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num new new_line" data-linenumber="17" 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">

17

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<pre style="margin: 0;">+<span id="LC17" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Prelude</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="18" 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">

18

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<pre style="margin: 0;">+<span id="LC18" class="line" lang="haskell"></span>

</pre>

</td>

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<pre style="margin: 0;">+<span id="LC19" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique</span></span>

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<pre style="margin: 0;">+<span id="LC20" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.DFM</span></span>

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<pre style="margin: 0;">+<span id="LC21" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Utils.Outputable</span></span>

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<pre style="margin: 0;">+<span id="LC22" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC23" class="line" lang="haskell"><span class="cd">-- | Either @Indirect x@, meaning the value is represented by that of @x@, or</span></span>

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<pre style="margin: 0;">+<span id="LC24" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- an @Entry@ containing containing the actual value it represents.</span></span>

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<pre style="margin: 0;">+<span id="LC25" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">Shared</span> <span class="n" style="color: #333;">key</span> <span class="n" style="color: #333;">ele</span></span>

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<pre style="margin: 0;">+<span id="LC26" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Indirect</span> <span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">key</span></span>

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<pre style="margin: 0;">+<span id="LC27" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Entry</span> <span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">ele</span></span>

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<pre style="margin: 0;">+<span id="LC28" class="line" lang="haskell"></span>

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<pre style="margin: 0;">+<span id="LC29" class="line" lang="haskell"><span class="cd">-- | A 'UniqDFM' whose domain is /sets/ of 'Unique's, each of which share a</span></span>

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<pre style="margin: 0;">+<span id="LC30" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- common value of type @ele@.</span></span>

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<pre style="margin: 0;">+<span id="LC31" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Every such set (\"equivalence class\") has a distinct representative</span></span>

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<pre style="margin: 0;">+<span id="LC32" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- 'Unique'. Supports merging the entries of multiple such sets in a union-find</span></span>

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<pre style="margin: 0;">+<span id="LC33" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- like fashion.</span></span>

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<pre style="margin: 0;">+<span id="LC34" 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="LC35" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- An accurate model is that of @[(Set key, Maybe ele)]@: A finite mapping from</span></span>

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<pre style="margin: 0;">+<span id="LC36" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- sets of @key@s to possibly absent entries @ele@, where the sets don't overlap.</span></span>

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<pre style="margin: 0;">+<span id="LC37" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Example:</span></span>

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<pre style="margin: 0;">+<span id="LC38" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- @</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC39" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--   m = [({u1,u3}, Just ele1), ({u2}, Just ele2), ({u4,u7}, Nothing)]</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC40" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- @</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="41" 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">

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<pre style="margin: 0;">+<span id="LC41" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- On this model we support the following main operations:</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC42" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC43" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--   * @'lookupUSDFM' m u3 == Just ele1@, @'lookupUSDFM' m u4 == Nothing@,</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC44" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--     @'lookupUSDFM' m u5 == Nothing@.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC45" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--   * @'equateUSDFM' m u1 u3@ is a no-op, but</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC46" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--     @'equateUSDFM' m u1 u2@ merges @{u1,u3}@ and @{u2}@ to point to</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC47" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--     @Just ele2@ and returns the old entry of @{u1,u3}@, @Just ele1@.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC48" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--   * @'addToUSDFM' m u3 ele4@ sets the entry of @{u1,u3}@ to @Just ele4@.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC49" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC50" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- As well as a few means for traversal/conversion to list.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC51" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">newtype</span> <span class="kt" style="color: #458; font-weight: 600;">UniqSDFM</span> <span class="n" style="color: #333;">key</span> <span class="n" style="color: #333;">ele</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC52" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">USDFM</span> <span class="p">{</span> <span class="n" style="color: #333;">unUSDFM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">UniqDFM</span> <span class="n" style="color: #333;">key</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Shared</span> <span class="n" style="color: #333;">key</span> <span class="n" style="color: #333;">ele</span><span class="p">)</span> <span class="p">}</span></span>

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<pre style="margin: 0;">+<span id="LC53" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC54" class="line" lang="haskell"><span class="n" style="color: #333;">emptyUSDFM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">UniqSDFM</span> <span class="n" style="color: #333;">key</span> <span class="n" style="color: #333;">ele</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC55" class="line" lang="haskell"><span class="n" style="color: #333;">emptyUSDFM</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">USDFM</span> <span class="n" style="color: #333;">emptyUDFM</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC56" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC57" class="line" lang="haskell"><span class="n" style="color: #333;">lookupReprAndEntryUSDFM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Uniquable</span> <span class="n" style="color: #333;">key</span> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">UniqSDFM</span> <span class="n" style="color: #333;">key</span> <span class="n" style="color: #333;">ele</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">key</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">key</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="n" style="color: #333;">ele</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC58" class="line" lang="haskell"><span class="n" style="color: #333;">lookupReprAndEntryUSDFM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">USDFM</span> <span class="n" style="color: #333;">env</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span></span>

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<pre style="margin: 0;">+<span id="LC59" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

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<pre style="margin: 0;">+<span id="LC60" class="line" lang="haskell">    <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">lookupUDFM</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">x</span> <span class="kr" style="font-weight: 600;">of</span></span>

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<pre style="margin: 0;">+<span id="LC61" class="line" lang="haskell">      <span class="kt" style="color: #458; font-weight: 600;">Nothing</span>           <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">x</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC62" class="line" lang="haskell">      <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Indirect</span> <span class="n" style="color: #333;">y</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">y</span></span>

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<pre style="margin: 0;">+<span id="LC63" class="line" lang="haskell">      <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Entry</span> <span class="n" style="color: #333;">ele</span><span class="p">)</span>  <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">x</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">ele</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC64" class="line" lang="haskell"></span>

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<pre style="margin: 0;">+<span id="LC65" class="line" lang="haskell"><span class="cd">-- | @lookupSUDFM env x@ looks up an entry for @x@, looking through all</span></span>

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<pre style="margin: 0;">+<span id="LC66" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- 'Indirect's until it finds a shared 'Entry'.</span></span>

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<pre style="margin: 0;">+<span id="LC67" 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="LC68" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Examples in terms of the model (see 'UniqSDFM'):</span></span>

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<pre style="margin: 0;">+<span id="LC69" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- >>> lookupUSDFM [({u1,u3}, Just ele1), ({u2}, Just ele2)] u3 == Just ele1</span></span>

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<pre style="margin: 0;">+<span id="LC70" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- >>> lookupUSDFM [({u1,u3}, Just ele1), ({u2}, Just ele2)] u4 == Nothing</span></span>

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<pre style="margin: 0;">+<span id="LC71" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- >>> lookupUSDFM [({u1,u3}, Just ele1), ({u2}, Nothing)] u2 == Nothing</span></span>

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<pre style="margin: 0;">+<span id="LC72" class="line" lang="haskell"><span class="n" style="color: #333;">lookupUSDFM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Uniquable</span> <span class="n" style="color: #333;">key</span> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">UniqSDFM</span> <span class="n" style="color: #333;">key</span> <span class="n" style="color: #333;">ele</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">key</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="n" style="color: #333;">ele</span></span>

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<pre style="margin: 0;">+<span id="LC73" class="line" lang="haskell"><span class="n" style="color: #333;">lookupUSDFM</span> <span class="n" style="color: #333;">usdfm</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">snd</span> <span class="p">(</span><span class="n" style="color: #333;">lookupReprAndEntryUSDFM</span> <span class="n" style="color: #333;">usdfm</span> <span class="n" style="color: #333;">x</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC74" class="line" lang="haskell"></span>

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<pre style="margin: 0;">+<span id="LC75" class="line" lang="haskell"><span class="cd">-- | @equateUSDFM env x y@ makes @x@ and @y@ point to the same entry,</span></span>

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<pre style="margin: 0;">+<span id="LC76" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- thereby merging @x@'s class with @y@'s.</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC77" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- If both @x@ and @y@ are in the domain of the map, then @y@'s entry will be</span></span>

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<pre style="margin: 0;">+<span id="LC78" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- chosen as the new entry and @x@'s old entry will be returned.</span></span>

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<pre style="margin: 0;">+<span id="LC79" 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="LC80" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Examples in terms of the model (see 'UniqSDFM'):</span></span>

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<pre style="margin: 0;">+<span id="LC81" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- >>> equateUSDFM [] u1 u2 == (Nothing, [({u1,u2}, Nothing)])</span></span>

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<pre style="margin: 0;">+<span id="LC82" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- >>> equateUSDFM [({u1,u3}, Just ele1)] u3 u4 == (Nothing, [({u1,u3,u4}, Just ele1)])</span></span>

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<pre style="margin: 0;">+<span id="LC83" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- >>> equateUSDFM [({u1,u3}, Just ele1)] u4 u3 == (Nothing, [({u1,u3,u4}, Just ele1)])</span></span>

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<pre style="margin: 0;">+<span id="LC84" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- >>> equateUSDFM [({u1,u3}, Just ele1), ({u2}, Just ele2)] u3 u2 == (Just ele1, [({u2,u1,u3}, Just ele2)])</span></span>

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<pre style="margin: 0;">+<span id="LC85" class="line" lang="haskell"><span class="n" style="color: #333;">equateUSDFM</span></span>

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<pre style="margin: 0;">+<span id="LC86" class="line" lang="haskell">  <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Uniquable</span> <span class="n" style="color: #333;">key</span> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">UniqSDFM</span> <span class="n" style="color: #333;">key</span> <span class="n" style="color: #333;">ele</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">key</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">key</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="n" style="color: #333;">ele</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">UniqSDFM</span> <span class="n" style="color: #333;">key</span> <span class="n" style="color: #333;">ele</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC87" class="line" lang="haskell"><span class="n" style="color: #333;">equateUSDFM</span> <span class="n" style="color: #333;">usdfm</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">USDFM</span> <span class="n" style="color: #333;">env</span><span class="p">)</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y</span> <span class="o" style="font-weight: 600;">=</span></span>

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<pre style="margin: 0;">+<span id="LC88" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">case</span> <span class="p">(</span><span class="n" style="color: #333;">lu</span> <span class="n" style="color: #333;">x</span><span class="p">,</span> <span class="n" style="color: #333;">lu</span> <span class="n" style="color: #333;">y</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">of</span></span>

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<pre style="margin: 0;">+<span id="LC89" class="line" lang="haskell">    <span class="p">((</span><span class="n" style="color: #333;">x'</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span>    <span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">y'</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">))</span></span>

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<pre style="margin: 0;">+<span id="LC90" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">getUnique</span> <span class="n" style="color: #333;">x'</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">getUnique</span> <span class="n" style="color: #333;">y'</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Nothing</span><span class="p">,</span> <span class="n" style="color: #333;">usdfm</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- nothing to do</span></span>

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<pre style="margin: 0;">+<span id="LC91" class="line" lang="haskell">    <span class="p">((</span><span class="n" style="color: #333;">x'</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span>    <span class="p">,</span> <span class="p">(</span><span class="kr" style="font-weight: 600;">_</span> <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span><span class="p">))</span>     <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Nothing</span><span class="p">,</span> <span class="n" style="color: #333;">set_indirect</span> <span class="n" style="color: #333;">y</span> <span class="n" style="color: #333;">x'</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC92" class="line" lang="haskell">    <span class="p">((</span><span class="kr" style="font-weight: 600;">_</span> <span class="p">,</span> <span class="n" style="color: #333;">mb_ex</span><span class="p">),</span> <span class="p">(</span><span class="n" style="color: #333;">y'</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">))</span>           <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">mb_ex</span><span class="p">,</span>   <span class="n" style="color: #333;">set_indirect</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">y'</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC93" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

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<pre style="margin: 0;">+<span id="LC94" class="line" lang="haskell">    <span class="n" style="color: #333;">lu</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">lookupReprAndEntryUSDFM</span> <span class="n" style="color: #333;">usdfm</span></span>

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<pre style="margin: 0;">+<span id="LC95" class="line" lang="haskell">    <span class="n" style="color: #333;">set_indirect</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">USDFM</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">addToUDFM</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">a</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Indirect</span> <span class="n" style="color: #333;">b</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC96" class="line" lang="haskell"></span>

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<pre style="margin: 0;">+<span id="LC97" class="line" lang="haskell"><span class="cd">-- | @addToUSDFM env x a@ sets the entry @x@ is associated with to @a@,</span></span>

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<pre style="margin: 0;">+<span id="LC98" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- thereby modifying its whole equivalence class.</span></span>

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<pre style="margin: 0;">+<span id="LC99" 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="LC100" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Examples in terms of the model (see 'UniqSDFM'):</span></span>

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<pre style="margin: 0;">+<span id="LC101" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- >>> addToUSDFM [] u1 ele1 == [({u1}, Just ele1)]</span></span>

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<pre style="margin: 0;">+<span id="LC102" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- >>> addToUSDFM [({u1,u3}, Just ele1)] u3 ele2 == [({u1,u3}, Just ele2)]</span></span>

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<pre style="margin: 0;">+<span id="LC103" class="line" lang="haskell"><span class="n" style="color: #333;">addToUSDFM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Uniquable</span> <span class="n" style="color: #333;">key</span> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">UniqSDFM</span> <span class="n" style="color: #333;">key</span> <span class="n" style="color: #333;">ele</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">key</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">ele</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqSDFM</span> <span class="n" style="color: #333;">key</span> <span class="n" style="color: #333;">ele</span></span>

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<pre style="margin: 0;">+<span id="LC104" class="line" lang="haskell"><span class="n" style="color: #333;">addToUSDFM</span> <span class="n" style="color: #333;">usdfm</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">USDFM</span> <span class="n" style="color: #333;">env</span><span class="p">)</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">v</span> <span class="o" style="font-weight: 600;">=</span></span>

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<pre style="margin: 0;">+<span id="LC105" class="line" lang="haskell">  <span class="kt" style="color: #458; font-weight: 600;">USDFM</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">addToUDFM</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="n" style="color: #333;">fst</span> <span class="p">(</span><span class="n" style="color: #333;">lookupReprAndEntryUSDFM</span> <span class="n" style="color: #333;">usdfm</span> <span class="n" style="color: #333;">x</span><span class="p">))</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Entry</span> <span class="n" style="color: #333;">v</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC106" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC107" class="line" lang="haskell"><span class="n" style="color: #333;">traverseUSDFM</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">key</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">b</span> <span class="n" style="color: #333;">f</span><span class="o" style="font-weight: 600;">.</span> <span class="kt" style="color: #458; font-weight: 600;">Applicative</span> <span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">=></span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">b</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqSDFM</span> <span class="n" style="color: #333;">key</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">f</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UniqSDFM</span> <span class="n" style="color: #333;">key</span> <span class="n" style="color: #333;">b</span><span class="p">)</span></span>

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<td class="diff-line-num new new_line" data-linenumber="108" 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">

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<pre style="margin: 0;">+<span id="LC108" class="line" lang="haskell"><span class="n" style="color: #333;">traverseUSDFM</span> <span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fmap</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">USDFM</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">listToUDFM_Directly</span><span class="p">)</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">traverse</span> <span class="n" style="color: #333;">g</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">udfmToList</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">unUSDFM</span></span>

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<td class="diff-line-num new new_line" data-linenumber="109" 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">

109

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<pre style="margin: 0;">+<span id="LC109" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

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<td class="diff-line-num new new_line" data-linenumber="110" 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">

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<pre style="margin: 0;">+<span id="LC110" class="line" lang="haskell">    <span class="n" style="color: #333;">g</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Unique</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Shared</span> <span class="n" style="color: #333;">key</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">f</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Unique</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Shared</span> <span class="n" style="color: #333;">key</span> <span class="n" style="color: #333;">b</span><span class="p">)</span></span>

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111

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<pre style="margin: 0;">+<span id="LC111" class="line" lang="haskell">    <span class="n" style="color: #333;">g</span> <span class="p">(</span><span class="n" style="color: #333;">u</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Indirect</span> <span class="n" style="color: #333;">y</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pure</span> <span class="p">(</span><span class="n" style="color: #333;">u</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Indirect</span> <span class="n" style="color: #333;">y</span><span class="p">)</span></span>

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112

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<pre style="margin: 0;">+<span id="LC112" class="line" lang="haskell">    <span class="n" style="color: #333;">g</span> <span class="p">(</span><span class="n" style="color: #333;">u</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Entry</span> <span class="n" style="color: #333;">a</span><span class="p">)</span>    <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>

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113

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<pre style="margin: 0;">+<span id="LC113" class="line" lang="haskell">        <span class="n" style="color: #333;">a'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">a</span></span>

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<pre style="margin: 0;">+<span id="LC114" class="line" lang="haskell">        <span class="n" style="color: #333;">pure</span> <span class="p">(</span><span class="n" style="color: #333;">u</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">Entry</span> <span class="n" style="color: #333;">a'</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="115" 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">

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<pre style="margin: 0;">+<span id="LC115" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC116" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Outputable</span> <span class="n" style="color: #333;">key</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Outputable</span> <span class="n" style="color: #333;">ele</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">Outputable</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Shared</span> <span class="n" style="color: #333;">key</span> <span class="n" style="color: #333;">ele</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>

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<pre style="margin: 0;">+<span id="LC117" 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;">Indirect</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;">ppr</span> <span class="n" style="color: #333;">x</span></span>

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<td class="diff-line-num new new_line" data-linenumber="118" 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">

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<pre style="margin: 0;">+<span id="LC118" 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;">Entry</span> <span class="n" style="color: #333;">a</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;">a</span></span>

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<td class="diff-line-num new new_line" data-linenumber="119" 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">

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<pre style="margin: 0;">+<span id="LC119" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">+<span id="LC120" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Outputable</span> <span class="n" style="color: #333;">key</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Outputable</span> <span class="n" style="color: #333;">ele</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">Outputable</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UniqSDFM</span> <span class="n" style="color: #333;">key</span> <span class="n" style="color: #333;">ele</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>

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<td class="diff-line-num new new_line" data-linenumber="121" 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">

121

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC121" 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;">USDFM</span> <span class="n" style="color: #333;">env</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;">env</span></span></pre>

</td>

</tr>

</table>

<br>

</li>

<li id="0f33fd88c617246c7f89c4477d2d1d24f942df23">

<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/d9a5a13bd40f89ae43ab04fce07e39b74aaef1dd#0f33fd88c617246c7f89c4477d2d1d24f942df23"><strong>compiler/ghc.cabal.in</strong></a>

<hr>

<table class="code white" style="font-family: monospace; font-size: 90%;" bgcolor="#fff" width="100%" cellpadding="0" cellspacing="0">

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="569" 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="569" 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">@@ -569,6 +569,7 @@ Library</td>

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<td class="diff-line-num old_line" data-linenumber="569" 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">

569

</td>

<td class="diff-line-num new_line" data-linenumber="569" 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">

569

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<pre style="margin: 0;"> <span id="LC569" class="line" lang="plaintext">        GHC.Data.Stream</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="570" 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">

570

</td>

<td class="diff-line-num new_line" data-linenumber="570" 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">

570

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<pre style="margin: 0;"> <span id="LC570" class="line" lang="plaintext">        GHC.Data.StringBuffer</span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="571" 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">

571

</td>

<td class="diff-line-num new_line" data-linenumber="571" 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">

571

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<pre style="margin: 0;"> <span id="LC571" class="line" lang="plaintext">        GHC.Types.Unique.DFM</span>

</pre>

</td>

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<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="572" 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="572" 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">

572

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC572" class="line" lang="plaintext">        GHC.Types.Unique.SDFM</span>

</pre>

</td>

</tr>

<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="572" 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">

572

</td>

<td class="diff-line-num new_line" data-linenumber="573" 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">

573

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC573" class="line" lang="plaintext">        GHC.Types.Unique.DSet</span>

</pre>

</td>

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<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="573" 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">

573

</td>

<td class="diff-line-num new_line" data-linenumber="574" 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">

574

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC574" class="line" lang="plaintext">        GHC.Types.Unique.FM</span>

</pre>

</td>

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<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="574" 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">

574

</td>

<td class="diff-line-num new_line" data-linenumber="575" 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">

575

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC575" class="line" lang="plaintext">        GHC.Types.Unique.Set</span>

</pre>

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