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<h3>
Simon Peyton Jones pushed to branch wip/T18603
at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
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<h4>
Commits:
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<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/91d15840d7c4a7bf26d70b45ecad70d6fb940eaa">91d15840</a></strong>
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<span>by Simon Peyton Jones</span>
<i>at 2020-08-28T00:30:33+01:00</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">wibbles
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<h4>2 changed files:</h4>
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<a href="#448d7f6e0151c2014de38dead3a902f511c45b75">
compiler/GHC/Core/FVs.hs
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<a href="#bac3d5159a5688007de3aa3f5c4e50569677b347">
compiler/GHC/Core/Opt/OccurAnal.hs
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<h4>Changes:</h4>
<li id="448d7f6e0151c2014de38dead3a902f511c45b75">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/91d15840d7c4a7bf26d70b45ecad70d6fb940eaa#448d7f6e0151c2014de38dead3a902f511c45b75"><strong>compiler/GHC/Core/FVs.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">@@ -10,16 +10,12 @@ Taken quite directly from the Peyton Jones/Lester paper.</td>
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<pre style="margin: 0;"> <span id="LC10" class="line" lang="haskell"><span class="cd">-- | A module concerned with finding the free variables of an expression.</span></span>
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<pre style="margin: 0;"> <span id="LC11" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">GHC.Core.FVs</span> <span class="p">(</span></span>
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<pre style="margin: 0;"> <span id="LC12" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- * Free variables of expressions and binding groups</span></span>
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<pre style="margin: 0;">-<span id="LC13" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">exprFreeVars</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">exprFreeVars</span><span class="p">,</span><span class="idiff left"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff">exprsFreeVars</span></span><span class="p"><span class="idiff right">,</span></span></span>
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<pre style="margin: 0;"> <span id="LC14" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">exprFreeVarsDSet</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC15" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">exprFreeVarsList</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC16" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">exprFreeIds</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC17" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">exprFreeIdsDSet</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC18" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">exprFreeIdsList</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC19" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">exprsFreeIdsDSet</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC20" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">exprsFreeIdsList</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC21" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">exprsFreeVars</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC22" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">exprsFreeVarsList</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC15" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">exprFreeVarsList</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">exprsFreeVarsList</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC16" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">exprFreeIds</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">exprsFreeIds</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC17" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">exprFreeIdsDSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">exprsFreeIdsDSet</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC18" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">exprFreeIdsList</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">exprsFreeIdsList</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC19" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">bindFreeVars</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC20" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC21" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- * Selective free variables of expressions</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">@@ -126,6 +122,9 @@ exprFreeVarsList = fvVarList . exprFVs</td>
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<pre style="margin: 0;"> <span id="LC122" class="line" lang="haskell"><span class="n" style="color: #333;">exprFreeIds</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CoreExpr</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IdSet</span> <span class="c1" style="color: #998; font-style: italic;">-- Find all locally-defined free Ids</span></span>
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<pre style="margin: 0;"> <span id="LC123" class="line" lang="haskell"><span class="n" style="color: #333;">exprFreeIds</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">exprSomeFreeVars</span> <span class="n" style="color: #333;">isLocalId</span></span>
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<pre style="margin: 0;"> <span id="LC124" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC125" class="line" lang="haskell"><span class="n" style="color: #333;">exprsFreeIds</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">CoreExpr</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IdSet</span> <span class="c1" style="color: #998; font-style: italic;">-- Find all locally-defined free Ids</span></span>
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<pre style="margin: 0;">+<span id="LC126" class="line" lang="haskell"><span class="n" style="color: #333;">exprsFreeIds</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">exprsSomeFreeVars</span> <span class="n" style="color: #333;">isLocalId</span></span>
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<pre style="margin: 0;">+<span id="LC127" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC128" class="line" lang="haskell"><span class="cd">-- | Find all locally-defined free Ids in an expression</span></span>
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<pre style="margin: 0;"> <span id="LC129" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- returning a deterministic set.</span></span>
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<pre style="margin: 0;"> <span id="LC130" class="line" lang="haskell"><span class="n" style="color: #333;">exprFreeIdsDSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CoreExpr</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DIdSet</span> <span class="c1" style="color: #998; font-style: italic;">-- Find all locally-defined free Ids</span></span>
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<li id="bac3d5159a5688007de3aa3f5c4e50569677b347">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/91d15840d7c4a7bf26d70b45ecad70d6fb940eaa#bac3d5159a5688007de3aa3f5c4e50569677b347"><strong>compiler/GHC/Core/Opt/OccurAnal.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">@@ -64,7 +64,7 @@ Here's the externally-callable interface:</td>
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<pre style="margin: 0;"> <span id="LC64" class="line" lang="haskell"><span class="n" style="color: #333;">occurAnalysePgm</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Module</span> <span class="c1" style="color: #998; font-style: italic;">-- Used only in debug output</span></span>
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<pre style="margin: 0;"> <span id="LC65" class="line" lang="haskell"> <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="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- Active unfoldings</span></span>
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<pre style="margin: 0;"> <span id="LC66" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Activation</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- Active rules</span></span>
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<pre style="margin: 0;">-<span id="LC67" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">CoreRule</span><span class="p">]</span></span>
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<pre style="margin: 0;">+<span id="LC67" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">CoreRule</span><span class="p">]</span><span class="idiff left"> </span><span class="c1" style="color: #998; font-style: italic;"><span class="idiff right">-- Local rules for imported Ids</span></span></span>
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<pre style="margin: 0;"> <span id="LC68" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CoreProgram</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CoreProgram</span></span>
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<pre style="margin: 0;"> <span id="LC69" class="line" lang="haskell"><span class="n" style="color: #333;">occurAnalysePgm</span> <span class="n" style="color: #333;">this_mod</span> <span class="n" style="color: #333;">active_unf</span> <span class="n" style="color: #333;">active_rule</span> <span class="n" style="color: #333;">imp_rules</span> <span class="n" style="color: #333;">binds</span></span>
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<pre style="margin: 0;"> <span id="LC70" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isEmptyDetails</span> <span class="n" style="color: #333;">final_usage</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">@@ -96,20 +96,20 @@ occurAnalysePgm this_mod active_unf active_rule imp_rules binds</td>
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<pre style="margin: 0;"> <span id="LC96" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- The RULES declarations keep things alive!</span></span>
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<pre style="margin: 0;"> <span id="LC97" class="line" lang="haskell"></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;">-- imp_rule_edges maps a top-level local binder 'f' to the</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;">-- RHS free vars of any local RULES for an imported function,</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;">-- RHS free vars of any <span class="idiff left right">active </span>local RULES for an imported function,</span></span>
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100
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100
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<pre style="margin: 0;"> <span id="LC100" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- where 'f' appears on the LHS</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;">-- e.g. RULE foldr f = blah</span></span>
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102
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<pre style="margin: 0;"> <span id="LC102" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- imp_rule_edges contains f :-> fvs(blah)</span></span>
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103
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<pre style="margin: 0;"> <span id="LC103" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Preventing loops due to imported functions rules]</span></span>
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104
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<pre style="margin: 0;"> <span id="LC104" class="line" lang="haskell"> <span class="n" style="color: #333;">imp_rule_edges</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">ImpRuleEdges</span></span>
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105
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<pre style="margin: 0;"> <span id="LC105" class="line" lang="haskell"> <span class="n" style="color: #333;">imp_rule_edges</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldr</span> <span class="p">(</span><span class="n" style="color: #333;">plusVarEnv_C</span> <span class="n" style="color: #333;">unionVarSet</span><span class="p">)</span> <span class="n" style="color: #333;">emptyVarEnv</span></span>
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106
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<pre style="margin: 0;">-<span id="LC106" class="line" lang="haskell"> <span class="p">[</span> <span class="n" style="color: #333;">mapVarEnv</span> <span class="p">(</span><span class="n" style="color: #333;">const</span> <span class="n" style="color: #333;"><span class="idiff left">maps_to</span></span><span class="p"><span class="idiff right">)</span></span> <span class="o" style="font-weight: 600;">$</span></span>
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107
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<pre style="margin: 0;">-<span id="LC107" class="line" lang="haskell"> <span class="idiff left"> </span><span class="n" style="color: #333;"><span class="idiff">getUniqSet</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">exprFreeIds</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">arg</span></span><span class="idiff"> </span><span class="p"><span class="idiff">`</span></span><span class="n" style="color: #333;"><span class="idiff">delVarSetList</span></span><span class="p"><span class="idiff">`</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">ru_bndrs</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">imp_rule</span></span><span class="p"><span class="idiff right">)</span></span></span>
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108
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<pre style="margin: 0;">-<span id="LC108" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;"><span class="idiff left">imp_rule</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">imp_rule</span>s</span></span>
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109
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<pre style="margin: 0;">-<span id="LC109" class="line" lang="haskell"> <span class="p"><span class="idiff left">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">not</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">isBuiltinRule</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">imp_rule</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="c1" style="color: #998; font-style: italic;"><span class="idiff right">-- See Note [Plugin rules]</span></span></span>
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110
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<pre style="margin: 0;">-<span id="LC110" class="line" lang="haskell"> <span class="p"><span class="idiff left">,</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff">let</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">maps_to</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">exprFreeIds</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">ru_rhs</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">imp_rule</span></span><span class="p"><span class="idiff right">)</span></span></span>
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111
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<pre style="margin: 0;">-<span id="LC111" class="line" lang="haskell"> <span class="idiff left"> </span><span class="p"><span class="idiff">`</span></span><span class="n" style="color: #333;"><span class="idiff">delVarSetList</span></span><span class="p"><span class="idiff">`</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">ru_bndrs</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">imp_rule</span></span></span>
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112
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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;"><span class="idiff left">arg</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">ru_args</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">imp_rule</span></span> <span class="p">]</span></span>
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106
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<pre style="margin: 0;">+<span id="LC106" class="line" lang="haskell"> <span class="p">[</span> <span class="n" style="color: #333;">mapVarEnv</span> <span class="p">(</span><span class="n" style="color: #333;">const</span> <span class="n" style="color: #333;"><span class="idiff left">rhs_fvs</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="n" style="color: #333;"><span class="idiff right">getUniqSet</span></span> <span class="o" style="font-weight: 600;">$</span></span>
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107
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<pre style="margin: 0;">+<span id="LC107" class="line" lang="haskell"> <span class="n" style="color: #333;"><span class="idiff left">exprsFreeIds</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">args</span></span><span class="idiff"> </span><span class="p"><span class="idiff">`</span></span><span class="n" style="color: #333;"><span class="idiff">delVarSetList</span></span><span class="p"><span class="idiff">`</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">bndrs</span></span></span>
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108
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<pre style="margin: 0;">+<span id="LC108" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Rule</span></span><span class="idiff"> </span><span class="p"><span class="idiff">{</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">ru_act</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">act</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">ru_bndrs</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">bndr</span>s</span></span>
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<pre style="margin: 0;">+<span id="LC109" class="line" lang="haskell"> <span class="idiff left"> </span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">ru_args</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">args</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">ru_rhs</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">rhs</span></span><span class="idiff"> </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="n" style="color: #333;"><span class="idiff right">imp_rules</span></span></span>
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<pre style="margin: 0;">+<span id="LC110" class="line" lang="haskell"> <span class="idiff left"> </span><span class="c1" style="color: #998; font-style: italic;"><span class="idiff right">-- Not BuiltinRules; see Note [Plugin rules]</span></span></span>
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<pre style="margin: 0;">+<span id="LC111" class="line" lang="haskell"> <span class="p"><span class="idiff left">,</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">active_rule</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">act</span></span><span class="idiff"> </span><span class="c1" style="color: #998; font-style: italic;"><span class="idiff right">-- Only active rules</span></span></span>
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112
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<pre style="margin: 0;">+<span id="LC112" class="line" lang="haskell"> <span class="p">,</span> <span class="kr" style="font-weight: 600;"><span class="idiff left">let</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">rhs_fvs</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">exprFreeIds</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">rhs</span></span><span class="idiff"> </span><span class="p"><span class="idiff">`</span></span><span class="n" style="color: #333;"><span class="idiff">delVarSetList</span></span><span class="p"><span class="idiff">`</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">bndrs</span></span> <span class="p">]</span></span>
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113
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113
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<pre style="margin: 0;"> <span id="LC113" class="line" lang="haskell"></span>
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114
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<pre style="margin: 0;"> <span id="LC114" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">OccEnv</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">CoreBind</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;">UsageDetails</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">CoreBind</span><span class="p">])</span></span>
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<pre style="margin: 0;"> <span id="LC115" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kt" style="color: #458; font-weight: 600;">[]</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">@@ -260,13 +260,11 @@ always in scope.</td>
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<pre style="margin: 0;"> <span id="LC260" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> (because it isn't referenced any more), then the children will die</span></span>
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<pre style="margin: 0;"> <span id="LC261" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> too (unless they are already referenced directly).</span></span>
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<pre style="margin: 0;"> <span id="LC262" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC263" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> To that end, we build a Rec group for each cyclic strongly</span></span>
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<pre style="margin: 0;">-<span id="LC264" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> connected component,</span></span>
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<pre style="margin: 0;">-<span id="LC265" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> *treating f's rules as extra RHSs for 'f'*.</span></span>
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<pre style="margin: 0;"> <span id="LC263" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> More concretely, the SCC analysis runs on a graph with an edge</span></span>
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<pre style="margin: 0;"> <span id="LC264" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> from f -> g iff g is mentioned in</span></span>
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<pre style="margin: 0;">-<span id="LC268" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> (a) f's rhs</span></span>
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<pre style="margin: 0;">-<span id="LC269" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> (b) f's RULES</span></span>
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<pre style="margin: 0;">+<span id="LC265" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> (a) f's RHS</span></span>
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<pre style="margin: 0;">+<span id="LC266" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> (b) The LHS or RHS of all of f's RULES, active or inactive</span></span>
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<pre style="margin: 0;">+<span id="LC267" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> (i.e. regardless of phase)</span></span>
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268
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<pre style="margin: 0;"> <span id="LC268" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> These are rec_edges.</span></span>
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271
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269
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<pre style="margin: 0;"> <span id="LC269" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC270" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Under (b) we include variables free in *either* LHS *or* RHS of</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">@@ -275,6 +273,9 @@ always in scope.</td>
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<pre style="margin: 0;"> <span id="LC273" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> will be put in the same Rec, even though their 'main' RHSs are</span></span>
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276
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<pre style="margin: 0;"> <span id="LC274" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> both non-recursive.</span></span>
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<pre style="margin: 0;"> <span id="LC275" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC276" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> We must also include inactive rules, so that their free vars</span></span>
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<pre style="margin: 0;">+<span id="LC277" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> remain in scope.</span></span>
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<pre style="margin: 0;">+<span id="LC278" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC279" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> * Note [Rule dependency info]</span></span>
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<pre style="margin: 0;"> <span id="LC280" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> ~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>
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<pre style="margin: 0;"> <span id="LC281" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> The VarSet in a RuleInfo is used for dependency analysis in the</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">@@ -819,45 +820,45 @@ occAnalNonRecBind env lvl imp_rule_edges bndr rhs body_usage</td>
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819
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820
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<pre style="margin: 0;"> <span id="LC820" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">body_usage</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span><span class="p">)</span></span>
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821
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<pre style="margin: 0;"> <span id="LC821" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC822" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="c1" style="color: #998; font-style: italic;">-- It's mentioned in the body</span></span>
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<pre style="margin: 0;">-<span id="LC822" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">body_usage'</span> <span class="p">`</span><span class="n" style="color: #333;">andUDs</span><span class="p">`</span> <span class="n" style="color: #333;">rhs_usage<span class="idiff left right">4</span></span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">NonRec</span> <span class="n" style="color: #333;">final_bndr</span> <span class="n" style="color: #333;">rhs'</span><span class="p">])</span></span>
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<pre style="margin: 0;">+<span id="LC823" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">body_usage'</span> <span class="p">`</span><span class="n" style="color: #333;">andUDs</span><span class="p">`</span> <span class="n" style="color: #333;">rhs_usage</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">NonRec</span> <span class="n" style="color: #333;">final_bndr</span> <span class="n" style="color: #333;">rhs'</span><span class="p">])</span></span>
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823
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824
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<pre style="margin: 0;"> <span id="LC824" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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824
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825
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<pre style="margin: 0;"> <span id="LC825" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">body_usage'</span><span class="p">,</span> <span class="n" style="color: #333;">tagged_bndr</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tagNonRecBinder</span> <span class="n" style="color: #333;">lvl</span> <span class="n" style="color: #333;">body_usage</span> <span class="n" style="color: #333;">bndr</span></span>
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825
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826
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<pre style="margin: 0;"> <span id="LC826" class="line" lang="haskell"> <span class="n" style="color: #333;">final_bndr</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tagged_bndr</span> <span class="p">`</span><span class="n" style="color: #333;">setIdUnfolding</span><span class="p">`</span> <span class="n" style="color: #333;">unf'</span></span>
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827
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<pre style="margin: 0;"> <span id="LC827" class="line" lang="haskell"> <span class="p">`</span><span class="n" style="color: #333;">setIdSpecialisation</span><span class="p">`</span> <span class="n" style="color: #333;">mkRuleInfo</span> <span class="n" style="color: #333;">rules'</span></span>
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<pre style="margin: 0;">-<span id="LC827" class="line" lang="haskell"> <span class="n" style="color: #333;"><span class="idiff left">inl_fvs</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">inlineFreeVars</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">unf</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">unf_usage</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">rhs_usage1</span></span></span>
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828
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<pre style="margin: 0;">+<span id="LC828" class="line" lang="haskell"> <span class="n" style="color: #333;"><span class="idiff left">rhs_usage</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">rhs_uds</span></span><span class="idiff"> </span><span class="p"><span class="idiff">`</span></span><span class="n" style="color: #333;"><span class="idiff">andUDs</span></span><span class="p"><span class="idiff">`</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">unf_uds</span></span><span class="idiff"> </span><span class="p"><span class="idiff">`</span></span><span class="n" style="color: #333;"><span class="idiff">andUDs</span></span><span class="p"><span class="idiff">`</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">rule_uds</span></span></span>
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828
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829
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<pre style="margin: 0;"> <span id="LC829" class="line" lang="haskell"></span>
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829
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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;">-- Get the join info from the *new* decision</span></span>
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830
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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 [Join points and unfoldings/rules]</span></span>
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831
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832
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<pre style="margin: 0;"> <span id="LC832" class="line" lang="haskell"> <span class="n" style="color: #333;">mb_join_arity</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">willBeJoinId_maybe</span> <span class="n" style="color: #333;">tagged_bndr</span></span>
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832
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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;">is_join_point</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">isJust</span> <span class="n" style="color: #333;">mb_join_arity</span></span>
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833
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834
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<pre style="margin: 0;"> <span id="LC834" class="line" lang="haskell"></span>
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834
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<pre style="margin: 0;">-<span id="LC834" class="line" lang="haskell"></span>
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835
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<pre style="margin: 0;">+<span id="LC835" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">--------- Right hand side ---------</span></span>
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835
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836
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<pre style="margin: 0;"> <span id="LC836" class="line" lang="haskell"> <span class="n" style="color: #333;">env1</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">is_join_point</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">env</span> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Join point RHSs]</span></span>
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836
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837
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<pre style="margin: 0;"> <span id="LC837" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">certainly_inline</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">env</span> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Cascading inlines]</span></span>
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837
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838
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<pre style="margin: 0;"> <span id="LC838" 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;">rhsCtxt</span> <span class="n" style="color: #333;">env</span></span>
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838
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839
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<pre style="margin: 0;"> <span id="LC839" class="line" lang="haskell"></span>
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839
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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;">-- See Note [Sources of one-shot information]</span></span>
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840
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841
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<pre style="margin: 0;"> <span id="LC841" class="line" lang="haskell"> <span class="n" style="color: #333;">rhs_env</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">env1</span> <span class="p">{</span> <span class="n" style="color: #333;">occ_one_shots</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">argOneShots</span> <span class="n" style="color: #333;">dmd</span> <span class="p">}</span></span>
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842
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<pre style="margin: 0;">+<span id="LC842" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">rhs_uds</span><span class="p">,</span> <span class="n" style="color: #333;">rhs'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">occAnalRhs</span> <span class="n" style="color: #333;">rhs_env</span> <span class="kt" style="color: #458; font-weight: 600;">NonRecursive</span> <span class="n" style="color: #333;">mb_join_arity</span> <span class="n" style="color: #333;">rhs</span></span>
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841
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843
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<pre style="margin: 0;"> <span id="LC843" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC842" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">rhs_usage1</span><span class="p">,</span> <span class="n" style="color: #333;">rhs'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">occAnalRhs</span> <span class="n" style="color: #333;">rhs_env</span> <span class="n" style="color: #333;">mb_join_arity</span> <span class="n" style="color: #333;">rhs</span></span>
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843
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<pre style="margin: 0;">-<span id="LC843" class="line" lang="haskell"></span>
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844
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<pre style="margin: 0;">-<span id="LC844" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Unfoldings</span></span>
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844
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<pre style="margin: 0;">+<span id="LC844" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">--------- Unfolding ---------</span></span>
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<pre style="margin: 0;"> <span id="LC845" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Unfoldings and join points]</span></span>
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<pre style="margin: 0;"> <span id="LC846" class="line" lang="haskell"> <span class="n" style="color: #333;">unf</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">idUnfolding</span> <span class="n" style="color: #333;">bndr</span></span>
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847
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<pre style="margin: 0;">-<span id="LC847" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">unf_usage</span><span class="p">,</span> <span class="n" style="color: #333;">unf'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">occAnalUnfolding</span> <span class="n" style="color: #333;">rhs_env</span> <span class="n" style="color: #333;">mb_join_arity</span> <span class="n" style="color: #333;">unf</span></span>
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848
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<pre style="margin: 0;">-<span id="LC848" class="line" lang="haskell"> <span class="n" style="color: #333;">rhs_usage2</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rhs_usage1</span> <span class="p">`</span><span class="n" style="color: #333;">andUDs</span><span class="p">`</span> <span class="n" style="color: #333;">unf_usage</span></span>
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<pre style="margin: 0;">+<span id="LC847" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">unf_uds</span><span class="p">,</span> <span class="n" style="color: #333;">unf'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">occAnalUnfolding</span> <span class="n" style="color: #333;">rhs_env</span> <span class="kt" style="color: #458; font-weight: 600;">NonRecursive</span> <span class="n" style="color: #333;">mb_join_arity</span> <span class="n" style="color: #333;">unf</span></span>
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<pre style="margin: 0;"> <span id="LC848" class="line" lang="haskell"></span>
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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 class="idiff left right"> Rules</span></span></span>
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<pre style="margin: 0;">+<span id="LC849" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">--<span class="idiff left right">------- Rules ---------</span></span></span>
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<pre style="margin: 0;"> <span id="LC850" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Rules are extra RHSs] and Note [Rule dependency info]</span></span>
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<pre style="margin: 0;"> <span id="LC851" class="line" lang="haskell"> <span class="n" style="color: #333;">rules_w_uds</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">occAnalRules</span> <span class="n" style="color: #333;">rhs_env</span> <span class="n" style="color: #333;">mb_join_arity</span> <span class="n" style="color: #333;">bndr</span></span>
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<pre style="margin: 0;">-<span id="LC853" class="line" lang="haskell"> <span class="n" style="color: #333;">rule_uds</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">map</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="p">(</span><span class="kr" style="font-weight: 600;">_</span><span class="p">,</span> <span class="n" style="color: #333;">l</span><span class="p">,</span> <span class="n" style="color: #333;">r</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">l</span> <span class="p">`</span><span class="n" style="color: #333;">andUDs</span><span class="p">`</span> <span class="n" style="color: #333;">r</span><span class="p">)</span> <span class="n" style="color: #333;">rules_w_uds</span></span>
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<pre style="margin: 0;"> <span id="LC852" class="line" lang="haskell"> <span class="n" style="color: #333;">rules'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">fstOf3</span> <span class="n" style="color: #333;">rules_w_uds</span></span>
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<pre style="margin: 0;">-<span id="LC855" class="line" lang="haskell"> <span class="n" style="color: #333;">rhs_usage3</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldr</span> <span class="n" style="color: #333;">andUDs</span> <span class="n" style="color: #333;">rhs_usage2</span> <span class="n" style="color: #333;">rule_uds</span></span>
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856
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<pre style="margin: 0;">-<span id="LC856" class="line" lang="haskell"> <span class="n" style="color: #333;">rhs_usage4</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">lookupVarEnv</span> <span class="n" style="color: #333;">imp_rule_edges</span> <span class="n" style="color: #333;">bndr</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">-<span id="LC857" 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="n" style="color: #333;">rhs_usage3</span></span>
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<pre style="margin: 0;">-<span id="LC858" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">vs</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">addManyOccs</span> <span class="n" style="color: #333;">rhs_usage3</span> <span class="n" style="color: #333;">vs</span></span>
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<pre style="margin: 0;">+<span id="LC853" class="line" lang="haskell"> <span class="n" style="color: #333;">imp_rule_uds</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">lookupVarEnv</span> <span class="n" style="color: #333;">imp_rule_edges</span> <span class="n" style="color: #333;">bndr</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">+<span id="LC854" 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="n" style="color: #333;">emptyDetails</span></span>
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<pre style="margin: 0;">+<span id="LC855" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">vs</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">addManyOccs</span> <span class="n" style="color: #333;">emptyDetails</span> <span class="n" style="color: #333;">vs</span></span>
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859
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<pre style="margin: 0;"> <span id="LC856" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Preventing loops due to imported functions rules]</span></span>
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<pre style="margin: 0;"> <span id="LC857" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC858" class="line" lang="haskell"> <span class="n" style="color: #333;">rule_uds</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldr</span> <span class="n" style="color: #333;">add_rule_uds</span> <span class="n" style="color: #333;">imp_rule_uds</span> <span class="n" style="color: #333;">rules_w_uds</span></span>
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<pre style="margin: 0;">+<span id="LC859" class="line" lang="haskell"> <span class="n" style="color: #333;">add_rule_uds</span> <span class="p">(</span><span class="kr" style="font-weight: 600;">_</span><span class="p">,</span> <span class="n" style="color: #333;">l</span><span class="p">,</span> <span class="n" style="color: #333;">r</span><span class="p">)</span> <span class="n" style="color: #333;">uds</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">l</span> <span class="p">`</span><span class="n" style="color: #333;">andUDs</span><span class="p">`</span> <span class="n" style="color: #333;">r</span> <span class="p">`</span><span class="n" style="color: #333;">andUDs</span><span class="p">`</span> <span class="n" style="color: #333;">uds</span></span>
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<pre style="margin: 0;">+<span id="LC861" 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="LC862" class="line" lang="haskell"> <span class="n" style="color: #333;">occ</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">idOccInfo</span> <span class="n" style="color: #333;">tagged_bndr</span></span>
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<pre style="margin: 0;"> <span id="LC863" class="line" lang="haskell"> <span class="n" style="color: #333;">certainly_inline</span> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Cascading inlines]</span></span>
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<pre style="margin: 0;"> <span id="LC864" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">occ</span> <span class="kr" style="font-weight: 600;">of</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">@@ -869,16 +870,6 @@ occAnalNonRecBind env lvl imp_rule_edges bndr rhs body_usage</td>
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<pre style="margin: 0;"> <span id="LC870" class="line" lang="haskell"> <span class="n" style="color: #333;">active</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">isAlwaysActive</span> <span class="p">(</span><span class="n" style="color: #333;">idInlineActivation</span> <span class="n" style="color: #333;">bndr</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC871" class="line" lang="haskell"> <span class="n" style="color: #333;">not_stable</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">not</span> <span class="p">(</span><span class="n" style="color: #333;">isStableUnfolding</span> <span class="p">(</span><span class="n" style="color: #333;">idUnfolding</span> <span class="n" style="color: #333;">bndr</span><span class="p">))</span></span>
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<pre style="margin: 0;"> <span id="LC872" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC872" class="line" lang="haskell"><span class="n" style="color: #333;">setNonRecLoopBreaker</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TopLevelFlag</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RuleFvEnv</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</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>
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<pre style="margin: 0;">-<span id="LC873" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Non-recursive loop breakers]</span></span>
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<pre style="margin: 0;">-<span id="LC874" class="line" lang="haskell"><span class="n" style="color: #333;">setNonRecLoopBreaker</span> <span class="n" style="color: #333;">lvl</span> <span class="n" style="color: #333;">rule_fv_env</span> <span class="n" style="color: #333;">inl_fvs</span> <span class="n" style="color: #333;">bndr</span></span>
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<pre style="margin: 0;">-<span id="LC875" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isTopLevel</span> <span class="n" style="color: #333;">lvl</span> <span class="c1" style="color: #998; font-style: italic;">-- Only relevant for top-level binders</span></span>
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<pre style="margin: 0;">-<span id="LC876" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- since nested binders are never in rng(rule_fv_env)</span></span>
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<pre style="margin: 0;">-<span id="LC877" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">rule_loop</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mk_loop_breaker</span> <span class="n" style="color: #333;">bndr</span></span>
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<pre style="margin: 0;">-<span id="LC878" 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;">bndr</span></span>
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<pre style="margin: 0;">-<span id="LC879" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">-<span id="LC880" class="line" lang="haskell"> <span class="n" style="color: #333;">rule_loop</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bndr</span> <span class="p">`</span><span class="n" style="color: #333;">elemVarSet</span><span class="p">`</span> <span class="n" style="color: #333;">extendFvs_</span> <span class="n" style="color: #333;">rule_fv_env</span> <span class="n" style="color: #333;">inl_fvs</span></span>
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<pre style="margin: 0;">-<span id="LC881" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC873" 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="LC874" class="line" lang="haskell"><span class="n" style="color: #333;">occAnalRecBind</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">OccEnv</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TopLevelFlag</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ImpRuleEdges</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">Var</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">CoreExpr</span><span class="p">)]</span></span>
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<pre style="margin: 0;"> <span id="LC875" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UsageDetails</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UsageDetails</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">CoreBind</span><span class="p">])</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">@@ -904,15 +895,13 @@ occAnalRecBind env lvl imp_rule_edges pairs body_usage</td>
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<pre style="margin: 0;"> <span id="LC895" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC896" class="line" lang="haskell"> <span class="n" style="color: #333;">rule_fv_env</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">RuleFvEnv</span></span>
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<pre style="margin: 0;"> <span id="LC897" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Maps a variable f to the variables from this group</span></span>
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<pre style="margin: 0;">-<span id="LC907" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- mentioned in RHS of <span class="idiff left right">active</span> rules for f</span></span>
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<pre style="margin: 0;">+<span id="LC898" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- mentioned in RHS of <span class="idiff left right">/active/</span> rules for f</span></span>
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<pre style="margin: 0;"> <span id="LC899" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Domain is *subset* of bound vars (others have no rule fvs)</span></span>
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<pre style="margin: 0;">-<span id="LC909" class="line" lang="haskell"> <span class="n" style="color: #333;">rule_fv_env</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">transClosureFV</span> <span class="p">(</span><span class="n" style="color: #333;">mkVarEnv</span> <span class="n" style="color: #333;">init_rule_fvs</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC910" class="line" lang="haskell"> <span class="n" style="color: #333;">init_rule_fvs</span> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Finding rule RHS free vars]</span></span>
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<pre style="margin: 0;">-<span id="LC911" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="p">[</span> <span class="p">(</span><span class="n" style="color: #333;">b</span><span class="p">,</span> <span class="n" style="color: #333;">trimmed_rule_fvs</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC912" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="p">(</span><span class="n" style="color: #333;">node_payload</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ND</span> <span class="p">{</span> <span class="n" style="color: #333;">nd_bndr</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">b</span></span>
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<pre style="margin: 0;">-<span id="LC913" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">nd_active_rule_fvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rule_fvs</span> <span class="p">})</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">nodes</span></span>
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<pre style="margin: 0;">-<span id="LC914" class="line" lang="haskell"> <span class="p">,</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">trimmed_rule_fvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rule_fvs</span> <span class="p">`</span><span class="n" style="color: #333;">intersectVarSet</span><span class="p">`</span> <span class="n" style="color: #333;">bndr_set</span></span>
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<pre style="margin: 0;">-<span id="LC915" 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;">isEmptyVarSet</span> <span class="n" style="color: #333;">trimmed_rule_fvs</span><span class="p">)</span> <span class="p">]</span></span>
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<pre style="margin: 0;">+<span id="LC900" class="line" lang="haskell"> <span class="n" style="color: #333;">rule_fv_env</span> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Finding rule RHS free vars]</span></span>
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<pre style="margin: 0;">+<span id="LC901" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkVarEnv</span> <span class="p">[</span> <span class="p">(</span><span class="n" style="color: #333;">b</span><span class="p">,</span> <span class="n" style="color: #333;">rule_fvs</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC902" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="p">(</span><span class="n" style="color: #333;">node_payload</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ND</span> <span class="p">{</span> <span class="n" style="color: #333;">nd_bndr</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">b</span></span>
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<pre style="margin: 0;">+<span id="LC903" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">nd_active_rule_fvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rule_fvs</span> <span class="p">})</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">nodes</span></span>
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904
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<pre style="margin: 0;">+<span id="LC904" 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;">isEmptyVarSet</span> <span class="n" style="color: #333;">rule_fvs</span><span class="p">)</span> <span class="p">]</span></span>
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905
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<pre style="margin: 0;"> <span id="LC905" class="line" lang="haskell"></span>
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917
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906
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<pre style="margin: 0;"> <span id="LC906" class="line" lang="haskell"></span>
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907
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<pre style="margin: 0;"> <span id="LC907" 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="944" 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="933" 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">@@ -944,7 +933,7 @@ occAnalRec _ lvl rule_fv_env</td>
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944
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933
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<pre style="margin: 0;"> <span id="LC933" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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945
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934
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<pre style="margin: 0;"> <span id="LC934" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">body_uds'</span><span class="p">,</span> <span class="n" style="color: #333;">tagged_bndr</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tagNonRecBinder</span> <span class="n" style="color: #333;">lvl</span> <span class="n" style="color: #333;">body_uds</span> <span class="n" style="color: #333;">bndr</span></span>
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946
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935
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<pre style="margin: 0;"> <span id="LC935" class="line" lang="haskell"> <span class="n" style="color: #333;">final_bndr</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">setNonRecLoopBreaker</span> <span class="n" style="color: #333;">lvl</span> <span class="n" style="color: #333;">rule_fv_env</span> <span class="n" style="color: #333;">inl_fvs</span> <span class="n" style="color: #333;">tagged_bndr</span></span>
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<td class="diff-line-num old old_line" data-linenumber="947" 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">
947
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<pre style="margin: 0;">-<span id="LC947" class="line" lang="haskell"> <span class="n" style="color: #333;">rhs_uds'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">adjustRhsUsage</span> <span class="p"><span class="idiff left">(</span></span><span class="n" style="color: #333;"><span class="idiff">willBeJoinId_maybe</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">tagged_bndr</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 right">NonRecursive</span></span></span>
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936
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<pre style="margin: 0;">+<span id="LC936" class="line" lang="haskell"> <span class="n" style="color: #333;">rhs_uds'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">adjustRhsUsage</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">NonRecursive</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">willBeJoinId_maybe</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">tagged_bndr</span></span><span class="p"><span class="idiff right">)</span></span></span>
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948
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937
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<pre style="margin: 0;"> <span id="LC937" class="line" lang="haskell"> <span class="n" style="color: #333;">rhs_bndrs</span> <span class="n" style="color: #333;">rhs_uds</span></span>
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949
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938
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<pre style="margin: 0;"> <span id="LC938" class="line" lang="haskell"></span>
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950
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939
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<pre style="margin: 0;"> <span id="LC939" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- The Rec case is the interesting one</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="993" 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="982" 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">@@ -993,6 +982,16 @@ occAnalRec env lvl rule_fv_env</td>
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993
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982
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<pre style="margin: 0;"> <span id="LC982" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Loop breaking</span></span>
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994
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983
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<pre style="margin: 0;"> <span id="LC983" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">------------------------------------------------------------------</span></span>
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995
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984
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<pre style="margin: 0;"> <span id="LC984" class="line" lang="haskell"></span>
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985
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<pre style="margin: 0;">+<span id="LC985" class="line" lang="haskell"><span class="n" style="color: #333;">setNonRecLoopBreaker</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TopLevelFlag</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RuleFvEnv</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</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>
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986
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<pre style="margin: 0;">+<span id="LC986" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Non-recursive loop breakers]</span></span>
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987
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<pre style="margin: 0;">+<span id="LC987" class="line" lang="haskell"><span class="n" style="color: #333;">setNonRecLoopBreaker</span> <span class="n" style="color: #333;">lvl</span> <span class="n" style="color: #333;">rule_fv_env</span> <span class="n" style="color: #333;">inl_fvs</span> <span class="n" style="color: #333;">bndr</span></span>
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<pre style="margin: 0;">+<span id="LC988" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isTopLevel</span> <span class="n" style="color: #333;">lvl</span> <span class="c1" style="color: #998; font-style: italic;">-- Only relevant for top-level binders</span></span>
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989
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<pre style="margin: 0;">+<span id="LC989" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- since nested binders are never in rng(rule_fv_env)</span></span>
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<pre style="margin: 0;">+<span id="LC990" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">rule_loop</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mk_loop_breaker</span> <span class="n" style="color: #333;">bndr</span></span>
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<pre style="margin: 0;">+<span id="LC991" 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;">bndr</span></span>
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<pre style="margin: 0;">+<span id="LC992" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC993" class="line" lang="haskell"> <span class="n" style="color: #333;">rule_loop</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bndr</span> <span class="p">`</span><span class="n" style="color: #333;">elemVarSet</span><span class="p">`</span> <span class="n" style="color: #333;">extendFvs_</span> <span class="n" style="color: #333;">rule_fv_env</span> <span class="n" style="color: #333;">inl_fvs</span></span>
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<pre style="margin: 0;">+<span id="LC994" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC995" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">Binding</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;">CoreExpr</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC996" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC997" class="line" lang="haskell"><span class="n" style="color: #333;">loopBreakNodes</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Int</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">@@ -1243,9 +1242,6 @@ type ImpRuleEdges = RuleFvEnv</td>
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<pre style="margin: 0;"> <span id="LC1242" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Mapping from a local Id 'f' to the free vars of the RHS of</span></span>
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<pre style="margin: 0;"> <span id="LC1243" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- local rules for an imported Id that mention 'f' on the LHS</span></span>
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<pre style="margin: 0;"> <span id="LC1244" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC1246" class="line" lang="haskell"><span class="n" style="color: #333;">lookupRuleFvEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">RuleFvEnv</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;">IdSet</span></span>
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<pre style="margin: 0;">-<span id="LC1247" class="line" lang="haskell"><span class="n" style="color: #333;">lookupRuleFvEnv</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">id</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">lookupVarEnv</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">id</span> <span class="p">`</span><span class="n" style="color: #333;">orElse</span><span class="p">`</span> <span class="n" style="color: #333;">emptyVarSet</span></span>
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<pre style="margin: 0;">-<span id="LC1248" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1245" class="line" lang="haskell"><span class="n" style="color: #333;">noImpRuleEdges</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">ImpRuleEdges</span></span>
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<pre style="margin: 0;"> <span id="LC1246" class="line" lang="haskell"><span class="n" style="color: #333;">noImpRuleEdges</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">emptyVarEnv</span></span>
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<pre style="margin: 0;"> <span id="LC1247" class="line" lang="haskell"></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">@@ -1317,15 +1313,20 @@ makeNode env imp_rule_edges bndr_set (bndr, rhs)</td>
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1317
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<pre style="margin: 0;"> <span id="LC1313" class="line" lang="haskell"> <span class="n" style="color: #333;">details</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">ND</span> <span class="p">{</span> <span class="n" style="color: #333;">nd_bndr</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bndr'</span></span>
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1318
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<pre style="margin: 0;"> <span id="LC1314" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">nd_rhs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rhs'</span></span>
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1315
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<pre style="margin: 0;"> <span id="LC1315" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">nd_rhs_bndrs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bndrs'</span></span>
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<pre style="margin: 0;">-<span id="LC1320" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">nd_uds</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rhs_usage<span class="idiff left right">3</span></span></span>
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<pre style="margin: 0;">+<span id="LC1316" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">nd_uds</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rhs_usage</span></span>
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1321
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1317
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<pre style="margin: 0;"> <span id="LC1317" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">nd_inl</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">inl_fvs</span></span>
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1322
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1318
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<pre style="margin: 0;"> <span id="LC1318" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">nd_weak</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">node_fvs</span> <span class="p">`</span><span class="n" style="color: #333;">minusVarSet</span><span class="p">`</span> <span class="n" style="color: #333;">inl_fvs</span></span>
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1323
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<pre style="margin: 0;">-<span id="LC1323" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">nd_active_rule_fvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">active_rule_fvs</span></span>
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1319
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<pre style="margin: 0;">+<span id="LC1319" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">nd_active_rule_fvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">active_rule_fvs</span><span class="idiff left"> </span><span class="p"><span class="idiff">`</span></span><span class="n" style="color: #333;"><span class="idiff">intersectVarSet</span></span><span class="p"><span class="idiff">`</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">bndr_set</span></span></span>
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1324
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1320
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<pre style="margin: 0;"> <span id="LC1320" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">nd_score</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">pprPanic</span> <span class="s" style="color: #d14;">"makeNodeDetails"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">bndr</span><span class="p">)</span> <span class="p">}</span></span>
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1325
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1321
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<pre style="margin: 0;"> <span id="LC1321" class="line" lang="haskell"></span>
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1326
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1322
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<pre style="margin: 0;"> <span id="LC1322" class="line" lang="haskell"> <span class="n" style="color: #333;">bndr'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bndr</span> <span class="p">`</span><span class="n" style="color: #333;">setIdUnfolding</span><span class="p">`</span> <span class="n" style="color: #333;">unf'</span></span>
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1327
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1323
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<pre style="margin: 0;"> <span id="LC1323" class="line" lang="haskell"> <span class="p">`</span><span class="n" style="color: #333;">setIdSpecialisation</span><span class="p">`</span> <span class="n" style="color: #333;">mkRuleInfo</span> <span class="n" style="color: #333;">rules'</span></span>
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1328
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1324
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<pre style="margin: 0;"> <span id="LC1324" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC1325" class="line" lang="haskell"> <span class="n" style="color: #333;">rhs_usage</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rhs_uds</span> <span class="p">`</span><span class="n" style="color: #333;">andUDs</span><span class="p">`</span> <span class="n" style="color: #333;">unf_uds</span> <span class="p">`</span><span class="n" style="color: #333;">andUDs</span><span class="p">`</span> <span class="n" style="color: #333;">rule_uds</span></span>
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<pre style="margin: 0;">+<span id="LC1326" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Note [Rules are extra RHSs]</span></span>
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<pre style="margin: 0;">+<span id="LC1327" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Note [Rule dependency info]</span></span>
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<pre style="margin: 0;">+<span id="LC1328" class="line" lang="haskell"> <span class="n" style="color: #333;">node_fvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">udFreeVars</span> <span class="n" style="color: #333;">bndr_set</span> <span class="n" style="color: #333;">rhs_usage</span></span>
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1329
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<pre style="margin: 0;">+<span id="LC1329" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1330" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Get join point info from the *current* decision</span></span>
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1330
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1331
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<pre style="margin: 0;"> <span id="LC1331" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- We don't know what the new decision will be!</span></span>
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<pre style="margin: 0;"> <span id="LC1332" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Using the old decision at least allows us to</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1333" 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="1334" 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">@@ -1333,42 +1334,43 @@ makeNode env imp_rule_edges bndr_set (bndr, rhs)</td>
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1333
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<pre style="margin: 0;"> <span id="LC1334" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Join points and unfoldings/rules]</span></span>
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<pre style="margin: 0;"> <span id="LC1335" class="line" lang="haskell"> <span class="n" style="color: #333;">mb_join_arity</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">isJoinId_maybe</span> <span class="n" style="color: #333;">bndr</span></span>
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<pre style="margin: 0;"> <span id="LC1336" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC1337" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">--------- Right hand side ---------</span></span>
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<pre style="margin: 0;"> <span id="LC1338" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Constructing the edges for the main Rec computation</span></span>
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<pre style="margin: 0;"> <span id="LC1339" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Forming Rec groups]</span></span>
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<pre style="margin: 0;">-<span id="LC1338" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">body</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">collectBinders</span> <span class="n" style="color: #333;">rhs</span></span>
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<pre style="margin: 0;">-<span id="LC1339" class="line" lang="haskell"> <span class="n" style="color: #333;">rhs_env</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rhsCtxt</span> <span class="n" style="color: #333;">env</span></span>
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<pre style="margin: 0;">-<span id="LC1340" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">rhs_usage1</span><span class="p">,</span> <span class="n" style="color: #333;">bndrs'</span><span class="p">,</span> <span class="n" style="color: #333;">body'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">occAnalLamOrRhs</span> <span class="n" style="color: #333;">rhs_env</span> <span class="n" style="color: #333;">bndrs</span> <span class="n" style="color: #333;">body</span></span>
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<pre style="margin: 0;">-<span id="LC1341" class="line" lang="haskell"> <span class="n" style="color: #333;">rhs'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkLams</span> <span class="n" style="color: #333;">bndrs'</span> <span class="n" style="color: #333;">body'</span></span>
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<pre style="margin: 0;">-<span id="LC1342" class="line" lang="haskell"> <span class="n" style="color: #333;">rhs_usage3</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldr</span> <span class="n" style="color: #333;">andUDs</span> <span class="n" style="color: #333;">rhs_usage1</span> <span class="n" style="color: #333;">rule_uds</span></span>
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<pre style="margin: 0;">-<span id="LC1343" class="line" lang="haskell"> <span class="p">`</span><span class="n" style="color: #333;">andUDs</span><span class="p">`</span> <span class="n" style="color: #333;">unf_uds</span></span>
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<pre style="margin: 0;">-<span id="LC1344" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Note [Rules are extra RHSs]</span></span>
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<pre style="margin: 0;">-<span id="LC1345" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Note [Rule dependency info]</span></span>
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<pre style="margin: 0;">-<span id="LC1346" class="line" lang="haskell"> <span class="n" style="color: #333;">node_fvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">udFreeVars</span> <span class="n" style="color: #333;">bndr_set</span> <span class="n" style="color: #333;">rhs_usage3</span></span>
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<pre style="margin: 0;">-<span id="LC1347" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC1348" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Finding the free variables of the rules</span></span>
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<pre style="margin: 0;">-<span id="LC1349" class="line" lang="haskell"> <span class="n" style="color: #333;">is_active</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">occ_rule_act</span> <span class="n" style="color: #333;">env</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Activation</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="LC1340" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Do not use occAnalRhs because we don't yet know</span></span>
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<pre style="margin: 0;">+<span id="LC1341" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- the final answer for mb_join_arity</span></span>
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<pre style="margin: 0;">+<span id="LC1342" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">body</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">collectBinders</span> <span class="n" style="color: #333;">rhs</span></span>
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<pre style="margin: 0;">+<span id="LC1343" class="line" lang="haskell"> <span class="n" style="color: #333;">rhs_env</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rhsCtxt</span> <span class="n" style="color: #333;">env</span></span>
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<pre style="margin: 0;">+<span id="LC1344" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">rhs_uds</span><span class="p">,</span> <span class="n" style="color: #333;">bndrs'</span><span class="p">,</span> <span class="n" style="color: #333;">body'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">occAnalLamOrRhs</span> <span class="n" style="color: #333;">rhs_env</span> <span class="n" style="color: #333;">bndrs</span> <span class="n" style="color: #333;">body</span></span>
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<pre style="margin: 0;">+<span id="LC1345" class="line" lang="haskell"> <span class="n" style="color: #333;">rhs'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkLams</span> <span class="n" style="color: #333;">bndrs'</span> <span class="n" style="color: #333;">body'</span></span>
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<pre style="margin: 0;">+<span id="LC1346" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC1347" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">--------- Unfolding ---------</span></span>
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<pre style="margin: 0;">+<span id="LC1348" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Unfoldings and join points]</span></span>
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<pre style="margin: 0;">+<span id="LC1349" class="line" lang="haskell"> <span class="n" style="color: #333;">unf</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">realIdUnfolding</span> <span class="n" style="color: #333;">bndr</span> <span class="c1" style="color: #998; font-style: italic;">-- realIdUnfolding: Ignore loop-breaker-ness</span></span>
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1350
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<pre style="margin: 0;">+<span id="LC1350" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- here because that is what we are setting!</span></span>
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1351
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<pre style="margin: 0;">+<span id="LC1351" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">unf_uds</span><span class="p">,</span> <span class="n" style="color: #333;">unf'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">occAnalUnfolding</span> <span class="n" style="color: #333;">rhs_env</span> <span class="kt" style="color: #458; font-weight: 600;">Recursive</span> <span class="n" style="color: #333;">mb_join_arity</span> <span class="n" style="color: #333;">unf</span></span>
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<pre style="margin: 0;">+<span id="LC1352" class="line" lang="haskell"> <span class="n" style="color: #333;">inl_fvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">restrictFreeVars</span> <span class="n" style="color: #333;">bndr_set</span> <span class="p">(</span><span class="n" style="color: #333;">inlineFreeVars</span> <span class="n" style="color: #333;">unf</span> <span class="n" style="color: #333;">unf_uds</span> <span class="n" style="color: #333;">rhs_uds</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC1353" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC1354" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">--------- Rules ---------</span></span>
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<pre style="margin: 0;"> <span id="LC1355" class="line" lang="haskell"> <span class="n" style="color: #333;">rules_w_uds</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">CoreRule</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">UsageDetails</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">UsageDetails</span><span class="p">)]</span></span>
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<pre style="margin: 0;"> <span id="LC1356" class="line" lang="haskell"> <span class="n" style="color: #333;">rules_w_uds</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">occAnalRules</span> <span class="n" style="color: #333;">rhs_env</span> <span class="n" style="color: #333;">mb_join_arity</span> <span class="n" style="color: #333;">bndr</span></span>
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<pre style="margin: 0;">+<span id="LC1357" class="line" lang="haskell"> <span class="n" style="color: #333;">rules'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">fstOf3</span> <span class="n" style="color: #333;">rules_w_uds</span></span>
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1358
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<pre style="margin: 0;"> <span id="LC1358" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC1354" class="line" lang="haskell"> <span class="n" style="color: #333;">rules'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">fstOf3</span> <span class="n" style="color: #333;">rules_w_uds</span></span>
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<pre style="margin: 0;">-<span id="LC1355" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC1356" class="line" lang="haskell"> <span class="n" style="color: #333;">rules_w_rhs_fvs</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">Activation</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span><span class="p">)]</span> <span class="c1" style="color: #998; font-style: italic;">-- Find the RHS fvs</span></span>
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1357
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<pre style="margin: 0;">-<span id="LC1357" class="line" lang="haskell"> <span class="n" style="color: #333;">rules_w_rhs_fvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">maybe</span> <span class="n" style="color: #333;">id</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">ids</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">((</span><span class="kt" style="color: #458; font-weight: 600;">AlwaysActive</span><span class="p">,</span> <span class="n" style="color: #333;">ids</span><span class="p">)</span><span class="o" style="font-weight: 600;">:</span><span class="p">))</span></span>
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1358
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<pre style="margin: 0;">-<span id="LC1358" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">lookupVarEnv</span> <span class="n" style="color: #333;">imp_rule_edges</span> <span class="n" style="color: #333;">bndr</span><span class="p">)</span></span>
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1359
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<pre style="margin: 0;">-<span id="LC1359" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Preventing loops due to imported functions rules]</span></span>
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<pre style="margin: 0;">-<span id="LC1360" class="line" lang="haskell"> <span class="p">[</span> <span class="p">(</span><span class="n" style="color: #333;">ru_act</span> <span class="n" style="color: #333;">rule</span><span class="p">,</span> <span class="n" style="color: #333;">udFreeVars</span> <span class="n" style="color: #333;">bndr_set</span> <span class="n" style="color: #333;">rhs_uds</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC1361" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="p">(</span><span class="n" style="color: #333;">rule</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">,</span> <span class="n" style="color: #333;">rhs_uds</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rules_w_uds</span> <span class="p">]</span></span>
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<pre style="margin: 0;">-<span id="LC1362" class="line" lang="haskell"> <span class="n" style="color: #333;">rule_uds</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">map</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="p">(</span><span class="kr" style="font-weight: 600;">_</span><span class="p">,</span> <span class="n" style="color: #333;">l</span><span class="p">,</span> <span class="n" style="color: #333;">r</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">l</span> <span class="p">`</span><span class="n" style="color: #333;">andUDs</span><span class="p">`</span> <span class="n" style="color: #333;">r</span><span class="p">)</span> <span class="n" style="color: #333;">rules_w_uds</span></span>
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<pre style="margin: 0;">-<span id="LC1363" class="line" lang="haskell"> <span class="n" style="color: #333;">active_rule_fvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">unionVarSets</span> <span class="p">[</span><span class="n" style="color: #333;">fvs</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;">fvs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">rules_w_rhs_fvs</span></span>
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<pre style="margin: 0;">-<span id="LC1364" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">is_active</span> <span class="n" style="color: #333;">a</span><span class="p">]</span></span>
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<pre style="margin: 0;">+<span id="LC1359" class="line" lang="haskell"> <span class="n" style="color: #333;">rule_uds</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldr</span> <span class="n" style="color: #333;">add_rule_uds</span> <span class="n" style="color: #333;">imp_rule_uds</span> <span class="n" style="color: #333;">rules_w_uds</span></span>
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<pre style="margin: 0;">+<span id="LC1360" class="line" lang="haskell"> <span class="n" style="color: #333;">add_rule_uds</span> <span class="p">(</span><span class="kr" style="font-weight: 600;">_</span><span class="p">,</span> <span class="n" style="color: #333;">l</span><span class="p">,</span> <span class="n" style="color: #333;">r</span><span class="p">)</span> <span class="n" style="color: #333;">uds</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">l</span> <span class="p">`</span><span class="n" style="color: #333;">andUDs</span><span class="p">`</span> <span class="n" style="color: #333;">r</span> <span class="p">`</span><span class="n" style="color: #333;">andUDs</span><span class="p">`</span> <span class="n" style="color: #333;">uds</span></span>
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<pre style="margin: 0;">+<span id="LC1361" class="line" lang="haskell"> <span class="n" style="color: #333;">imp_rule_uds</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">lookupVarEnv</span> <span class="n" style="color: #333;">imp_rule_edges</span> <span class="n" style="color: #333;">bndr</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">+<span id="LC1362" 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="n" style="color: #333;">emptyDetails</span></span>
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<pre style="margin: 0;">+<span id="LC1363" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">vs</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">addManyOccs</span> <span class="n" style="color: #333;">emptyDetails</span> <span class="n" style="color: #333;">vs</span></span>
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<pre style="margin: 0;"> <span id="LC1364" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC1366" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Finding the usage details of the INLINE pragma (if any)</span></span>
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1367
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<pre style="margin: 0;">-<span id="LC1367" class="line" lang="haskell"> <span class="n" style="color: #333;">unf</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">realIdUnfolding</span> <span class="n" style="color: #333;">bndr</span> <span class="c1" style="color: #998; font-style: italic;">-- realIdUnfolding: Ignore loop-breaker-ness</span></span>
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<pre style="margin: 0;">-<span id="LC1368" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- here because that is what we are setting!</span></span>
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<pre style="margin: 0;">-<span id="LC1369" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">unf_uds</span><span class="p">,</span> <span class="n" style="color: #333;">unf'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">occAnalUnfolding</span> <span class="n" style="color: #333;">rhs_env</span> <span class="n" style="color: #333;">mb_join_arity</span> <span class="n" style="color: #333;">unf</span></span>
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1370
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<pre style="margin: 0;"> <span id="LC1365" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC1371" class="line" lang="haskell"> <span class="n" style="color: #333;">inl_fvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">restrictFreeVars</span> <span class="n" style="color: #333;">bndr_set</span> <span class="p">(</span><span class="n" style="color: #333;">inlineFreeVars</span> <span class="n" style="color: #333;">unf</span> <span class="n" style="color: #333;">unf_uds</span> <span class="n" style="color: #333;">rhs_usage1</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC1366" class="line" lang="haskell"> <span class="n" style="color: #333;">is_active</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">occ_rule_act</span> <span class="n" style="color: #333;">env</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Activation</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="LC1367" class="line" lang="haskell"> <span class="n" style="color: #333;">imp_rule_fvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">udFreeVars</span> <span class="n" style="color: #333;">bndr_set</span> <span class="n" style="color: #333;">imp_rule_uds</span></span>
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<pre style="margin: 0;">+<span id="LC1368" class="line" lang="haskell"> <span class="n" style="color: #333;">active_rule_fvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldr</span> <span class="n" style="color: #333;">add_active_rule</span> <span class="n" style="color: #333;">imp_rule_fvs</span> <span class="n" style="color: #333;">rules_w_uds</span></span>
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<pre style="margin: 0;">+<span id="LC1369" class="line" lang="haskell"> <span class="n" style="color: #333;">add_active_rule</span> <span class="p">(</span><span class="n" style="color: #333;">rule</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">,</span> <span class="n" style="color: #333;">rhs_uds</span><span class="p">)</span> <span class="n" style="color: #333;">fvs</span></span>
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<pre style="margin: 0;">+<span id="LC1370" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">is_active</span> <span class="p">(</span><span class="n" style="color: #333;">ruleActivation</span> <span class="n" style="color: #333;">rule</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC1371" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">udFreeVars</span> <span class="n" style="color: #333;">bndr_set</span> <span class="n" style="color: #333;">rhs_uds</span> <span class="p">`</span><span class="n" style="color: #333;">unionVarSet</span><span class="p">`</span> <span class="n" style="color: #333;">fvs</span></span>
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<pre style="margin: 0;">+<span id="LC1372" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span></span>
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<pre style="margin: 0;">+<span id="LC1373" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fvs</span></span>
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1374
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<pre style="margin: 0;"> <span id="LC1374" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1375" class="line" lang="haskell"><span class="n" style="color: #333;">inlineFreeVars</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Unfolding</span></span>
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1376
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<pre style="margin: 0;"> <span id="LC1376" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UsageDetails</span> <span class="c1" style="color: #998; font-style: italic;">-- Of the unfolding</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">@@ -1632,29 +1634,31 @@ Hence the is_lb field of NodeScore</td>
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1634
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<pre style="margin: 0;"> <span id="LC1634" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">************************************************************************</span></span>
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1635
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<pre style="margin: 0;"> <span id="LC1635" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>
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1636
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<pre style="margin: 0;"> <span id="LC1636" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC1635" class="line" lang="haskell"><span class="n" style="color: #333;">occAnalRhs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">OccEnv</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">JoinArity</span></span>
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<pre style="margin: 0;">+<span id="LC1637" class="line" lang="haskell"><span class="n" style="color: #333;">occAnalRhs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">OccEnv</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">RecFlag</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff right"> </span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">JoinArity</span></span>
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1638
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<pre style="margin: 0;"> <span id="LC1638" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CoreExpr</span> <span class="c1" style="color: #998; font-style: italic;">-- RHS</span></span>
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1639
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<pre style="margin: 0;"> <span id="LC1639" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UsageDetails</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">CoreExpr</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC1638" class="line" lang="haskell"><span class="n" style="color: #333;">occAnalRhs</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">mb_join_arity</span> <span class="n" style="color: #333;">rhs</span></span>
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1640
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<pre style="margin: 0;">+<span id="LC1640" class="line" lang="haskell"><span class="n" style="color: #333;">occAnalRhs</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;"><span class="idiff left">is_rec</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">mb_join_arity</span> <span class="n" style="color: #333;">rhs</span></span>
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1641
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<pre style="margin: 0;"> <span id="LC1641" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">occAnalLamOrRhs</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">bndrs</span> <span class="n" style="color: #333;">body</span> <span class="kr" style="font-weight: 600;">of</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">body_usage</span><span class="p">,</span> <span class="n" style="color: #333;">bndrs'</span><span class="p">,</span> <span class="n" style="color: #333;">body'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span></span>
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<pre style="margin: 0;">-<span id="LC1640" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">rhs'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkLams</span> <span class="p">(</span><span class="n" style="color: #333;">markJoinOneShots</span> <span class="n" style="color: #333;">mb_join_arity</span> <span class="n" style="color: #333;">bndrs'</span><span class="p">)</span> <span class="n" style="color: #333;">body'</span></span>
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<pre style="margin: 0;">+<span id="LC1642" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">final_bndrs</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isRec</span> <span class="n" style="color: #333;">is_rec</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bndrs'</span></span>
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<pre style="margin: 0;">+<span id="LC1643" 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;">markJoinOneShots</span> <span class="n" style="color: #333;">mb_join_arity</span> <span class="n" style="color: #333;">bndrs'</span></span>
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<pre style="margin: 0;"> <span id="LC1644" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- For a /non-recursive/ join point we can mark all</span></span>
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<pre style="margin: 0;"> <span id="LC1645" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- its join-lambda as one-shot; and it's a good idea to do so</span></span>
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<pre style="margin: 0;"> <span id="LC1646" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1647" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Final adjustment</span></span>
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<pre style="margin: 0;">-<span id="LC1645" class="line" lang="haskell"> <span class="n" style="color: #333;">rhs_usage</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">adjustRhsUsage</span> <span class="n" style="color: #333;"><span class="idiff left">mb_join_arity</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">NonRecursive</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">bndrs'</span></span> <span class="n" style="color: #333;">body_usage</span></span>
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<pre style="margin: 0;">+<span id="LC1648" class="line" lang="haskell"> <span class="n" style="color: #333;">rhs_usage</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">adjustRhsUsage</span> <span class="n" style="color: #333;"><span class="idiff left">is_rec</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">mb_join_arity</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">final_bndrs</span></span> <span class="n" style="color: #333;">body_usage</span></span>
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<pre style="margin: 0;"> <span id="LC1649" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC1647" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="p">(</span><span class="n" style="color: #333;">rhs_usage</span><span class="p">,</span> <span class="n" style="color: #333;"><span class="idiff left right">rhs</span>'</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC1650" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="p">(</span><span class="n" style="color: #333;">rhs_usage</span><span class="p">,</span> <span class="n" style="color: #333;"><span class="idiff left">mkLams</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">final_bndrs</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">body</span>'</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC1651" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC1652" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">body</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">collectBinders</span> <span class="n" style="color: #333;">rhs</span></span>
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1653
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<pre style="margin: 0;"> <span id="LC1653" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1654" class="line" lang="haskell"><span class="n" style="color: #333;">occAnalUnfolding</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">OccEnv</span></span>
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<pre style="margin: 0;">+<span id="LC1655" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RecFlag</span></span>
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<pre style="margin: 0;"> <span id="LC1656" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">JoinArity</span> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Join points and unfoldings/rules]</span></span>
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<pre style="margin: 0;"> <span id="LC1657" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Unfolding</span></span>
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<pre style="margin: 0;"> <span id="LC1658" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UsageDetails</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Unfolding</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC1659" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Occurrence-analyse a stable unfolding;</span></span>
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<pre style="margin: 0;"> <span id="LC1660" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- discard a non-stable one altogether.</span></span>
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<pre style="margin: 0;">-<span id="LC1657" class="line" lang="haskell"><span class="n" style="color: #333;">occAnalUnfolding</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">mb_join_arity</span> <span class="n" style="color: #333;">unf</span></span>
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<pre style="margin: 0;">+<span id="LC1661" class="line" lang="haskell"><span class="n" style="color: #333;">occAnalUnfolding</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;"><span class="idiff left">is_rec</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">mb_join_arity</span> <span class="n" style="color: #333;">unf</span></span>
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1658
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1662
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<pre style="margin: 0;"> <span id="LC1662" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">unf</span> <span class="kr" style="font-weight: 600;">of</span></span>
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1659
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1663
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<pre style="margin: 0;"> <span id="LC1663" class="line" lang="haskell"> <span class="n" style="color: #333;">unf</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CoreUnfolding</span> <span class="p">{</span> <span class="n" style="color: #333;">uf_tmpl</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rhs</span><span class="p">,</span> <span class="n" style="color: #333;">uf_src</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">src</span> <span class="p">})</span></span>
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1660
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1664
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<pre style="margin: 0;"> <span id="LC1664" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isStableSource</span> <span class="n" style="color: #333;">src</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">usage</span><span class="p">,</span> <span class="n" style="color: #333;">unf'</span><span class="p">)</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1665" 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="1669" 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">@@ -1665,7 +1669,7 @@ occAnalUnfolding env mb_join_arity unf</td>
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1665
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1669
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<pre style="margin: 0;"> <span id="LC1669" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- to guide its decisions. It's ok to leave un-substituted</span></span>
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1666
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1670
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<pre style="margin: 0;"> <span id="LC1670" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- expressions in the tree because all the variables that were in</span></span>
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1667
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1671
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<pre style="margin: 0;"> <span id="LC1671" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- scope remain in scope; there is no cloning etc.</span></span>
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1668
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<pre style="margin: 0;">-<span id="LC1668" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">usage</span><span class="p">,</span> <span class="n" style="color: #333;">rhs'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">occAnalRhs</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">mb_join_arity</span> <span class="n" style="color: #333;">rhs</span></span>
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1672
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<pre style="margin: 0;">+<span id="LC1672" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">usage</span><span class="p">,</span> <span class="n" style="color: #333;">rhs'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">occAnalRhs</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;"><span class="idiff left">is_rec</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">mb_join_arity</span> <span class="n" style="color: #333;">rhs</span></span>
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1669
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1673
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<pre style="margin: 0;"> <span id="LC1673" class="line" lang="haskell"></span>
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1670
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1674
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<pre style="margin: 0;"> <span id="LC1674" class="line" lang="haskell"> <span class="n" style="color: #333;">unf'</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">noBinderSwaps</span> <span class="n" style="color: #333;">env</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">unf</span> <span class="c1" style="color: #998; font-style: italic;">-- Note [Unfoldings and rules]</span></span>
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1671
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1675
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<pre style="margin: 0;"> <span id="LC1675" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">unf</span> <span class="p">{</span> <span class="n" style="color: #333;">uf_tmpl</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rhs'</span> <span class="p">}</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1962" 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="1966" 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">@@ -1962,7 +1966,7 @@ occAnalApp env (Var fun, args, ticks)</td>
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1962
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1966
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<pre style="margin: 0;"> <span id="LC1966" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- This caused #18296</span></span>
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1963
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1967
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<pre style="margin: 0;"> <span id="LC1967" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">fun</span> <span class="p">`</span><span class="n" style="color: #333;">hasKey</span><span class="p">`</span> <span class="n" style="color: #333;">runRWKey</span></span>
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1964
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1968
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<pre style="margin: 0;"> <span id="LC1968" class="line" lang="haskell"> <span class="p">,</span> <span class="p">[</span><span class="n" style="color: #333;">t1</span><span class="p">,</span> <span class="n" style="color: #333;">t2</span><span class="p">,</span> <span class="n" style="color: #333;">arg</span><span class="p">]</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">args</span></span>
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1965
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<pre style="margin: 0;">-<span id="LC1965" class="line" lang="haskell"> <span class="p">,</span> <span class="kr" style="font-weight: 600;">let</span> <span class="p">(</span><span class="n" style="color: #333;">usage</span><span class="p">,</span> <span class="n" style="color: #333;">arg'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">occAnalRhs</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="mi" style="color: #099;">1</span><span class="p">)</span> <span class="n" style="color: #333;">arg</span></span>
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1969
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<pre style="margin: 0;">+<span id="LC1969" class="line" lang="haskell"> <span class="p">,</span> <span class="kr" style="font-weight: 600;">let</span> <span class="p">(</span><span class="n" style="color: #333;">usage</span><span class="p">,</span> <span class="n" style="color: #333;">arg'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">occAnalRhs</span> <span class="n" style="color: #333;">env</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">NonRecursive</span></span><span class="idiff right"> </span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="mi" style="color: #099;">1</span><span class="p">)</span> <span class="n" style="color: #333;">arg</span></span>
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1966
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1970
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<pre style="margin: 0;"> <span id="LC1970" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">usage</span><span class="p">,</span> <span class="n" style="color: #333;">mkTicks</span> <span class="n" style="color: #333;">ticks</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">mkApps</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Var</span> <span class="n" style="color: #333;">fun</span><span class="p">)</span> <span class="p">[</span><span class="n" style="color: #333;">t1</span><span class="p">,</span> <span class="n" style="color: #333;">t2</span><span class="p">,</span> <span class="n" style="color: #333;">arg'</span><span class="p">])</span></span>
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1967
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1971
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<pre style="margin: 0;"> <span id="LC1971" class="line" lang="haskell"></span>
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1968
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1972
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<pre style="margin: 0;"> <span id="LC1972" class="line" lang="haskell"><span class="n" style="color: #333;">occAnalApp</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Var</span> <span class="n" style="color: #333;">fun</span><span class="p">,</span> <span class="n" style="color: #333;">args</span><span class="p">,</span> <span class="n" style="color: #333;">ticks</span><span class="p">)</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">@@ -2298,6 +2302,7 @@ addAppCtxt :: OccEnv -> [Arg CoreBndr] -> OccEnv</td>
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2298
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2302
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<pre style="margin: 0;"> <span id="LC2302" class="line" lang="haskell"><span class="n" style="color: #333;">addAppCtxt</span> <span class="n" style="color: #333;">env</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">OccEnv</span> <span class="p">{</span> <span class="n" style="color: #333;">occ_one_shots</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ctxt</span> <span class="p">})</span> <span class="n" style="color: #333;">args</span></span>
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2299
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2303
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<pre style="margin: 0;"> <span id="LC2303" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">env</span> <span class="p">{</span> <span class="n" style="color: #333;">occ_one_shots</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">replicate</span> <span class="p">(</span><span class="n" style="color: #333;">valArgCount</span> <span class="n" style="color: #333;">args</span><span class="p">)</span> <span class="kt" style="color: #458; font-weight: 600;">OneShotLam</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">ctxt</span> <span class="p">}</span></span>
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2300
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2304
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<pre style="margin: 0;"> <span id="LC2304" class="line" lang="haskell"></span>
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2305
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<pre style="margin: 0;">+<span id="LC2305" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{-</span></span>
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2301
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2306
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<pre style="margin: 0;"> <span id="LC2306" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">transClosureFV :: VarEnv VarSet -> VarEnv VarSet</span></span>
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2302
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2307
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<pre style="margin: 0;"> <span id="LC2307" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-- If (f,g), (g,h) are in the input, then (f,h) is in the output</span></span>
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2303
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2308
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<pre style="margin: 0;"> <span id="LC2308" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-- as well as (f,g), (g,h)</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">@@ -2313,7 +2318,7 @@ transClosureFV env</td>
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2313
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2318
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<pre style="margin: 0;"> <span id="LC2318" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> | otherwise = (False, (b,new_fvs))</span></span>
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2314
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2319
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<pre style="margin: 0;"> <span id="LC2319" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> where</span></span>
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2315
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2320
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<pre style="margin: 0;"> <span id="LC2320" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> (new_fvs, no_change_here) = extendFvs env fvs</span></span>
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2316
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<pre style="margin: 0;">-<span id="LC2316" class="line" lang="haskell"></span>
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2321
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<pre style="margin: 0;">+<span id="LC2321" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>
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2317
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2322
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<pre style="margin: 0;"> <span id="LC2322" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-------------</span></span>
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2318
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2323
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<pre style="margin: 0;"> <span id="LC2323" class="line" lang="haskell"><span class="n" style="color: #333;">extendFvs_</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">VarEnv</span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span></span>
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2319
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2324
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<pre style="margin: 0;"> <span id="LC2324" class="line" lang="haskell"><span class="n" style="color: #333;">extendFvs_</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">s</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;">extendFvs</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- Discard the Bool flag</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2785" 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">@@ -2780,20 +2785,20 @@ flattenUsageDetails ud</td>
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2780
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2785
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<pre style="margin: 0;"> <span id="LC2785" class="line" lang="haskell"></span>
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2781
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2786
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<pre style="margin: 0;"> <span id="LC2786" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-------------------</span></span>
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2782
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2787
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<pre style="margin: 0;"> <span id="LC2787" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Adjusting right-hand sides]</span></span>
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2783
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<pre style="margin: 0;">-<span id="LC2783" class="line" lang="haskell"><span class="n" style="color: #333;">adjustRhsUsage</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Maybe</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">JoinArity</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">RecFlag</span></span></span>
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<pre style="margin: 0;">+<span id="LC2788" class="line" lang="haskell"><span class="n" style="color: #333;">adjustRhsUsage</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">RecFlag</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">Maybe</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">JoinArity</span></span></span>
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<pre style="margin: 0;"> <span id="LC2789" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">CoreBndr</span><span class="p">]</span> <span class="c1" style="color: #998; font-style: italic;">-- Outer lambdas, AFTER occ anal</span></span>
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2790
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<pre style="margin: 0;"> <span id="LC2790" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UsageDetails</span> <span class="c1" style="color: #998; font-style: italic;">-- From body of lambda</span></span>
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<pre style="margin: 0;"> <span id="LC2791" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UsageDetails</span></span>
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2787
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<pre style="margin: 0;">-<span id="LC2787" class="line" lang="haskell"><span class="n" style="color: #333;">adjustRhsUsage</span> <span class="n" style="color: #333;"><span class="idiff left">mb_join_arity</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">rec_flag</span></span> <span class="n" style="color: #333;">bndrs</span> <span class="n" style="color: #333;">usage</span></span>
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2788
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<pre style="margin: 0;">-<span id="LC2788" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">markAllInsideLamIf</span> <span class="idiff left"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">not</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">one_shot</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff right"> </span> <span class="o" style="font-weight: 600;">$</span></span>
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2792
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<pre style="margin: 0;">+<span id="LC2792" class="line" lang="haskell"><span class="n" style="color: #333;">adjustRhsUsage</span> <span class="n" style="color: #333;"><span class="idiff left">is_rec</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">mb_join_arity</span></span> <span class="n" style="color: #333;">bndrs</span> <span class="n" style="color: #333;">usage</span></span>
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2793
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<pre style="margin: 0;">+<span id="LC2793" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">markAllInsideLamIf</span> <span class="p"><span class="idiff left">(</span></span><span class="n" style="color: #333;"><span class="idiff">not</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">one_shot</span></span><span class="p"><span class="idiff right">)</span></span> <span class="o" style="font-weight: 600;">$</span></span>
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2794
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<pre style="margin: 0;"> <span id="LC2794" class="line" lang="haskell"> <span class="n" style="color: #333;">markAllNonTailIf</span> <span class="p">(</span><span class="n" style="color: #333;">not</span> <span class="n" style="color: #333;">exact_join</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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2795
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<pre style="margin: 0;"> <span id="LC2795" class="line" lang="haskell"> <span class="n" style="color: #333;">usage</span></span>
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2796
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<pre style="margin: 0;"> <span id="LC2796" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC2797" class="line" lang="haskell"> <span class="n" style="color: #333;">one_shot</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">mb_join_arity</span> <span class="kr" style="font-weight: 600;">of</span></span>
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2798
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<pre style="margin: 0;"> <span id="LC2798" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">join_arity</span></span>
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2794
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<pre style="margin: 0;">-<span id="LC2794" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isRec</span> <span class="n" style="color: #333;"><span class="idiff left right">rec_flag</span></span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
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2795
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<pre style="margin: 0;">-<span id="LC2795" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="idiff left right"> </span><span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">all</span> <span class="n" style="color: #333;">isOneShotBndr</span> <span class="p">(</span><span class="n" style="color: #333;">drop</span> <span class="n" style="color: #333;">join_arity</span> <span class="n" style="color: #333;">bndrs</span><span class="p">)</span></span>
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2796
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<pre style="margin: 0;">-<span id="LC2796" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="idiff left right"> </span><span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">all</span> <span class="n" style="color: #333;">isOneShotBndr</span> <span class="n" style="color: #333;">bndrs</span></span>
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2799
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<pre style="margin: 0;">+<span id="LC2799" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isRec</span> <span class="n" style="color: #333;"><span class="idiff left right">is_rec</span></span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
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<pre style="margin: 0;">+<span id="LC2800" 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;">all</span> <span class="n" style="color: #333;">isOneShotBndr</span> <span class="p">(</span><span class="n" style="color: #333;">drop</span> <span class="n" style="color: #333;">join_arity</span> <span class="n" style="color: #333;">bndrs</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC2801" 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="n" style="color: #333;">all</span> <span class="n" style="color: #333;">isOneShotBndr</span> <span class="n" style="color: #333;">bndrs</span></span>
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2797
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2802
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<pre style="margin: 0;"> <span id="LC2802" class="line" lang="haskell"></span>
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2798
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2803
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<pre style="margin: 0;"> <span id="LC2803" class="line" lang="haskell"> <span class="n" style="color: #333;">exact_join</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">exactJoin</span> <span class="n" style="color: #333;">mb_join_arity</span> <span class="n" style="color: #333;">bndrs</span></span>
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2799
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2804
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<pre style="margin: 0;"> <span id="LC2804" class="line" lang="haskell"></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="2874" 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="2879" 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">@@ -2874,7 +2879,7 @@ tagRecBinders lvl body_uds triples</td>
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2874
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2879
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<pre style="margin: 0;"> <span id="LC2879" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- join-point-hood decision</span></span>
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2875
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2880
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<pre style="margin: 0;"> <span id="LC2880" class="line" lang="haskell"> <span class="n" style="color: #333;">rhs_udss'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">adjust</span> <span class="n" style="color: #333;">triples</span></span>
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2876
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2881
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<pre style="margin: 0;"> <span id="LC2881" class="line" lang="haskell"> <span class="n" style="color: #333;">adjust</span> <span class="p">(</span><span class="n" style="color: #333;">bndr</span><span class="p">,</span> <span class="n" style="color: #333;">rhs_uds</span><span class="p">,</span> <span class="n" style="color: #333;">rhs_bndrs</span><span class="p">)</span></span>
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2877
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<pre style="margin: 0;">-<span id="LC2877" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">adjustRhsUsage</span> <span class="n" style="color: #333;"><span class="idiff left">mb_join_arity</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">Recursive</span></span> <span class="n" style="color: #333;">rhs_bndrs</span> <span class="n" style="color: #333;">rhs_uds</span></span>
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<pre style="margin: 0;">+<span id="LC2882" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">adjustRhsUsage</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Recursive</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">mb_join_arity</span></span> <span class="n" style="color: #333;">rhs_bndrs</span> <span class="n" style="color: #333;">rhs_uds</span></span>
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2878
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2883
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<pre style="margin: 0;"> <span id="LC2883" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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2879
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2884
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<pre style="margin: 0;"> <span id="LC2884" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Can't use willBeJoinId_maybe here because we haven't tagged the</span></span>
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2880
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2885
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<pre style="margin: 0;"> <span id="LC2885" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- binder yet (the tag depends on these adjustments!)</span></span>
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