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<h3>
Sebastian Graf pushed to branch wip/T17676
at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
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<h4>
Commits:
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<ul>
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<strong><a href="https://gitlab.haskell.org/ghc/ghc/commit/28a031e817d40fe0366a64e52da2f235b72cbfd3">28a031e8</a></strong>
<div>
<span>by Sebastian Graf</span>
<i>at 2020-03-19T17:36:40Z</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Rename isBot* to isDeadEnd*
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<h4>17 changed files:</h4>
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<li class="file-stats">
<a href="#d0d96a6d03668aeab20ebe05e2c4ccb798c7e64c">
compiler/GHC.hs
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<li class="file-stats">
<a href="#8b1482a65a3092c268b853a00aa18286427d1dec">
compiler/GHC/Core/Arity.hs
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<li class="file-stats">
<a href="#36a42448a83a9d1f6df8475f03ead2eed199dd8e">
compiler/GHC/Core/Lint.hs
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<li class="file-stats">
<a href="#2811a7297b8aa206197ac1f5dabd0818e3c7ec5a">
compiler/GHC/Core/Unfold.hs
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<li class="file-stats">
<a href="#1a7aba0daeafab195716dd25432479804a55ab60">
compiler/GHC/Core/Utils.hs
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<a href="#d11203a9321005ba51a16d751c86f609d1f18c71">
compiler/GHC/Iface/Tidy.hs
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<a href="#06ff7bac58fd8cfe0c17b81963b03f4cce86a065">
compiler/GHC/IfaceToCore.hs
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<a href="#10828b99499a9ef1e9839b007762c68994bcb036">
compiler/basicTypes/Demand.hs
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<a href="#2c842f2f15e67826dc12cc363525b56acb7b7882">
compiler/basicTypes/Id.hs
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<a href="#2f8fee2abca5d63f3b2a113efc849e4e6054c49a">
compiler/basicTypes/MkId.hs
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<li class="file-stats">
<a href="#8a8110b33eb43e4af5137cbe4b9b062abad7f6c2">
compiler/simplCore/CallArity.hs
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<a href="#1bcf2cbe3ecaeb06b9a4790c942b122a190c0209">
compiler/simplCore/FloatOut.hs
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<a href="#1bfa556ba999ac778958824c744da92d1038cbc0">
compiler/simplCore/LiberateCase.hs
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<a href="#32cfa1d436eed1ea5106ea7f4f67090c60a01ed1">
compiler/simplCore/SetLevels.hs
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<li class="file-stats">
<a href="#32d53a69dcadfb969898a49221a1ff152ea0677a">
compiler/simplCore/SimplUtils.hs
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<a href="#ad54962bae57898c236ee68bfd647356ef7718e7">
compiler/simplCore/Simplify.hs
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<li class="file-stats">
<a href="#03a0eeb10ac23c921a7aa0f0b5a56d844dcbbe86">
compiler/specialise/SpecConstr.hs
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<h4>Changes:</h4>
<li id="d0d96a6d03668aeab20ebe05e2c4ccb798c7e64c">
<a href="https://gitlab.haskell.org/ghc/ghc/commit/28a031e817d40fe0366a64e52da2f235b72cbfd3#d0d96a6d03668aeab20ebe05e2c4ccb798c7e64c"><strong>compiler/GHC.hs</strong></a>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="179" 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="179" 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">@@ -179,7 +179,7 @@ module GHC (</td>
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<td class="diff-line-num old_line" data-linenumber="179" 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">
179
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<pre style="margin: 0;"> <span id="LC179" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">isRecordSelector</span><span class="p">,</span></span>
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<td class="diff-line-num old_line" data-linenumber="180" 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">
180
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<pre style="margin: 0;"> <span id="LC180" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">isPrimOpId</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">isFCallId</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">isClassOpId_maybe</span><span class="p">,</span></span>
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<td class="diff-line-num old_line" data-linenumber="181" 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">
181
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<pre style="margin: 0;"> <span id="LC181" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">isDataConWorkId</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">idDataCon</span><span class="p">,</span></span>
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<td class="diff-line-num old old_line" data-linenumber="182" 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">
182
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<pre style="margin: 0;">-<span id="LC182" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">is<span class="idiff left right">Bottoming</span>Id</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">isDictonaryId</span><span class="p">,</span></span>
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<td class="diff-line-num new old_line" data-linenumber="183" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<td class="diff-line-num new new_line" data-linenumber="182" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
182
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<pre style="margin: 0;">+<span id="LC182" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">is<span class="idiff left right">DeadEnd</span>Id</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">isDictonaryId</span><span class="p">,</span></span>
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<td class="diff-line-num old_line" data-linenumber="183" 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">
183
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183
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<pre style="margin: 0;"> <span id="LC183" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">recordSelectorTyCon</span><span class="p">,</span></span>
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184
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184
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<pre style="margin: 0;"> <span id="LC184" class="line" lang="haskell"></span>
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185
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<pre style="margin: 0;"> <span id="LC185" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- ** Type constructors</span></span>
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<li id="8b1482a65a3092c268b853a00aa18286427d1dec">
<a href="https://gitlab.haskell.org/ghc/ghc/commit/28a031e817d40fe0366a64e52da2f235b72cbfd3#8b1482a65a3092c268b853a00aa18286427d1dec"><strong>compiler/GHC/Core/Arity.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">@@ -759,7 +759,7 @@ arityType _ (Var v)</td>
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759
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<pre style="margin: 0;"> <span id="LC759" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">not</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">isTopSig</span> <span class="n" style="color: #333;">strict_sig</span></span>
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<pre style="margin: 0;"> <span id="LC760" class="line" lang="haskell"> <span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">ds</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">splitStrictSig</span> <span class="n" style="color: #333;">strict_sig</span></span>
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761
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761
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<pre style="margin: 0;"> <span id="LC761" class="line" lang="haskell"> <span class="p">,</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">arity</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">length</span> <span class="n" style="color: #333;">ds</span></span>
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<td class="diff-line-num old old_line" data-linenumber="762" 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">
762
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<pre style="margin: 0;">-<span id="LC762" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">is<span class="idiff left right">Bot</span>Div</span> <span class="n" style="color: #333;">res</span> <span class="kr" style="font-weight: 600;">then</span> <span class="kt" style="color: #458; font-weight: 600;">ABot</span> <span class="n" style="color: #333;">arity</span></span>
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762
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<pre style="margin: 0;">+<span id="LC762" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">is<span class="idiff left right">DeadEnd</span>Div</span> <span class="n" style="color: #333;">res</span> <span class="kr" style="font-weight: 600;">then</span> <span class="kt" style="color: #458; font-weight: 600;">ABot</span> <span class="n" style="color: #333;">arity</span></span>
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763
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<pre style="margin: 0;"> <span id="LC763" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">else</span> <span class="kt" style="color: #458; font-weight: 600;">ATop</span> <span class="p">(</span><span class="n" style="color: #333;">take</span> <span class="n" style="color: #333;">arity</span> <span class="n" style="color: #333;">one_shots</span><span class="p">)</span></span>
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764
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764
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<pre style="margin: 0;"> <span id="LC764" 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="LC765" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">ATop</span> <span class="p">(</span><span class="n" style="color: #333;">take</span> <span class="p">(</span><span class="n" style="color: #333;">idArity</span> <span class="n" style="color: #333;">v</span><span class="p">)</span> <span class="n" style="color: #333;">one_shots</span><span class="p">)</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/commit/28a031e817d40fe0366a64e52da2f235b72cbfd3#36a42448a83a9d1f6df8475f03ead2eed199dd8e"><strong>compiler/GHC/Core/Lint.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">@@ -65,7 +65,7 @@ import Util</td>
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<pre style="margin: 0;"> <span id="LC65" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.InstEnv</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">instanceDFunId</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC66" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Coercion.Opt</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">checkAxInstCo</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC67" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Arity</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">typeArity</span> <span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC68" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Demand</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">splitStrictSig</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">is<span class="idiff left right">Bot</span>Div</span> <span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC68" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Demand</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">splitStrictSig</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">is<span class="idiff left right">DeadEnd</span>Div</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC69" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC70" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Driver.Types</span></span>
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<pre style="margin: 0;"> <span id="LC71" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Driver.Session</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">@@ -651,7 +651,7 @@ lintSingleBinding top_lvl_flag rec_flag (binder,rhs)</td>
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<pre style="margin: 0;"> <span id="LC651" class="line" lang="haskell"> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">binder</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC652" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC653" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">splitStrictSig</span> <span class="p">(</span><span class="n" style="color: #333;">idStrictness</span> <span class="n" style="color: #333;">binder</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">-<span id="LC654" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">demands</span><span class="p">,</span> <span class="n" style="color: #333;">result_info</span><span class="p">)</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">is<span class="idiff left right">Bot</span>Div</span> <span class="n" style="color: #333;">result_info</span> <span class="o" style="font-weight: 600;">-></span></span>
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<pre style="margin: 0;">+<span id="LC654" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">demands</span><span class="p">,</span> <span class="n" style="color: #333;">result_info</span><span class="p">)</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">is<span class="idiff left right">DeadEnd</span>Div</span> <span class="n" style="color: #333;">result_info</span> <span class="o" style="font-weight: 600;">-></span></span>
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<pre style="margin: 0;"> <span id="LC655" class="line" lang="haskell"> <span class="n" style="color: #333;">checkL</span> <span class="p">(</span><span class="n" style="color: #333;">demands</span> <span class="p">`</span><span class="n" style="color: #333;">lengthAtLeast</span><span class="p">`</span> <span class="n" style="color: #333;">idArity</span> <span class="n" style="color: #333;">binder</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC656" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"idArity"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="n" style="color: #333;">idArity</span> <span class="n" style="color: #333;">binder</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><+></span></span>
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<pre style="margin: 0;"> <span id="LC657" class="line" lang="haskell"> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"exceeds arity imposed by the strictness signature"</span> <span class="o" style="font-weight: 600;"><+></span></span>
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<li id="2811a7297b8aa206197ac1f5dabd0818e3c7ec5a">
<a href="https://gitlab.haskell.org/ghc/ghc/commit/28a031e817d40fe0366a64e52da2f235b72cbfd3#2811a7297b8aa206197ac1f5dabd0818e3c7ec5a"><strong>compiler/GHC/Core/Unfold.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">@@ -53,7 +53,7 @@ import GHC.Core.SimpleOpt</td>
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<pre style="margin: 0;"> <span id="LC53" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Arity</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">manifestArity</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC54" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Utils</span></span>
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<pre style="margin: 0;"> <span id="LC55" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Id</span></span>
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56
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<pre style="margin: 0;">-<span id="LC56" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Demand</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">is<span class="idiff left right">Bottoming</span>Sig</span> <span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC56" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Demand</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">is<span class="idiff left right">DeadEnd</span>Sig</span> <span class="p">)</span></span>
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57
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<pre style="margin: 0;"> <span id="LC57" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.DataCon</span></span>
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58
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<pre style="margin: 0;"> <span id="LC58" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Literal</span></span>
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59
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59
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<pre style="margin: 0;"> <span id="LC59" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">PrimOp</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">@@ -1176,7 +1176,7 @@ certainlyWillInline dflags fn_info</td>
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1176
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1176
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<pre style="margin: 0;"> <span id="LC1176" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [certainlyWillInline: INLINABLE]</span></span>
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1177
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1177
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<pre style="margin: 0;"> <span id="LC1177" class="line" lang="haskell"> <span class="n" style="color: #333;">do_cunf</span> <span class="n" style="color: #333;">expr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UnfIfGoodArgs</span> <span class="p">{</span> <span class="n" style="color: #333;">ug_size</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">size</span><span class="p">,</span> <span class="n" style="color: #333;">ug_args</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">args</span> <span class="p">})</span></span>
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1178
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1178
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<pre style="margin: 0;"> <span id="LC1178" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">arityInfo</span> <span class="n" style="color: #333;">fn_info</span> <span class="o" style="font-weight: 600;">></span> <span class="mi" style="color: #099;">0</span> <span class="c1" style="color: #998; font-style: italic;">-- See Note [certainlyWillInline: be careful of thunks]</span></span>
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1179
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<pre style="margin: 0;">-<span id="LC1179" 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;">is<span class="idiff left right">Bottoming</span>Sig</span> <span class="p">(</span><span class="n" style="color: #333;">strictnessInfo</span> <span class="n" style="color: #333;">fn_info</span><span class="p">))</span></span>
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1179
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<pre style="margin: 0;">+<span id="LC1179" 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;">is<span class="idiff left right">DeadEnd</span>Sig</span> <span class="p">(</span><span class="n" style="color: #333;">strictnessInfo</span> <span class="n" style="color: #333;">fn_info</span><span class="p">))</span></span>
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1180
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1180
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<pre style="margin: 0;"> <span id="LC1180" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Do not unconditionally inline a bottoming functions even if</span></span>
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1181
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1181
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<pre style="margin: 0;"> <span id="LC1181" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- it seems smallish. We've carefully lifted it out to top level,</span></span>
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1182
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1182
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<pre style="margin: 0;"> <span id="LC1182" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- so we don't want to re-inline it.</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/commit/28a031e817d40fe0366a64e52da2f235b72cbfd3#1a7aba0daeafab195716dd25432479804a55ab60"><strong>compiler/GHC/Core/Utils.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">@@ -1111,7 +1111,7 @@ exprIsBottom e</td>
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1111
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1111
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<pre style="margin: 0;"> <span id="LC1111" 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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1112
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1112
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<pre style="margin: 0;"> <span id="LC1112" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="mi" style="color: #099;">0</span> <span class="n" style="color: #333;">e</span></span>
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1113
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1113
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<pre style="margin: 0;"> <span id="LC1113" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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1114
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<pre style="margin: 0;">-<span id="LC1114" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Var</span> <span class="n" style="color: #333;">v</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">is<span class="idiff left right">Bottoming</span>Id</span> <span class="n" style="color: #333;">v</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">>=</span> <span class="n" style="color: #333;">idArity</span> <span class="n" style="color: #333;">v</span></span>
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<pre style="margin: 0;">+<span id="LC1114" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Var</span> <span class="n" style="color: #333;">v</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">is<span class="idiff left right">DeadEnd</span>Id</span> <span class="n" style="color: #333;">v</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">n</span> <span class="o" style="font-weight: 600;">>=</span> <span class="n" style="color: #333;">idArity</span> <span class="n" style="color: #333;">v</span></span>
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1115
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1115
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<pre style="margin: 0;"> <span id="LC1115" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">App</span> <span class="n" style="color: #333;">e</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isTypeArg</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">e</span></span>
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1116
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1116
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<pre style="margin: 0;"> <span id="LC1116" 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;">go</span> <span class="p">(</span><span class="n" style="color: #333;">n</span><span class="o" style="font-weight: 600;">+</span><span class="mi" style="color: #099;">1</span><span class="p">)</span> <span class="n" style="color: #333;">e</span></span>
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1117
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1117
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<pre style="margin: 0;"> <span id="LC1117" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Tick</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">e</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">e</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="1434" 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">@@ -1434,7 +1434,7 @@ isWorkFreeApp fn n_val_args</td>
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1434
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1434
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<pre style="margin: 0;"> <span id="LC1434" class="line" lang="haskell"><span class="n" style="color: #333;">isCheapApp</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CheapAppFun</span></span>
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1435
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1435
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<pre style="margin: 0;"> <span id="LC1435" class="line" lang="haskell"><span class="n" style="color: #333;">isCheapApp</span> <span class="n" style="color: #333;">fn</span> <span class="n" style="color: #333;">n_val_args</span></span>
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1436
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<pre style="margin: 0;"> <span id="LC1436" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isWorkFreeApp</span> <span class="n" style="color: #333;">fn</span> <span class="n" style="color: #333;">n_val_args</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
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1437
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<pre style="margin: 0;">-<span id="LC1437" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">is<span class="idiff left">BottomingId</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">fn</span></span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">True</span> <span class="c1" style="color: #998; font-style: italic;">-- See Note [isCheapApp: bottoming functions]</span></span>
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1437
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<pre style="margin: 0;">+<span id="LC1437" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">is<span class="idiff left">DeadEndId</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">fn</span></span><span class="idiff right"> </span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">True</span> <span class="c1" style="color: #998; font-style: italic;">-- See Note [isCheapApp: bottoming functions]</span></span>
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1438
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<pre style="margin: 0;"> <span id="LC1438" 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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1439
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1439
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<pre style="margin: 0;"> <span id="LC1439" 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;">idDetails</span> <span class="n" style="color: #333;">fn</span> <span class="kr" style="font-weight: 600;">of</span></span>
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1440
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1440
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<pre style="margin: 0;"> <span id="LC1440" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">DataConWorkId</span> <span class="p">{}</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">True</span> <span class="c1" style="color: #998; font-style: italic;">-- Actually handled by isWorkFreeApp</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="1456" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1456,7 +1456,7 @@ isExpandableApp fn n_val_args</td>
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1456
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1456
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<pre style="margin: 0;"> <span id="LC1456" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">RecSelId</span> <span class="p">{}</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">n_val_args</span> <span class="o" style="font-weight: 600;">==</span> <span class="mi" style="color: #099;">1</span> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Record selection]</span></span>
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1457
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1457
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<pre style="margin: 0;"> <span id="LC1457" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">ClassOpId</span> <span class="p">{}</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">n_val_args</span> <span class="o" style="font-weight: 600;">==</span> <span class="mi" style="color: #099;">1</span></span>
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1458
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1458
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<pre style="margin: 0;"> <span id="LC1458" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">PrimOpId</span> <span class="p">{}</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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1459
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<pre style="margin: 0;">-<span id="LC1459" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">is<span class="idiff left">BottomingId</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">fn</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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1459
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<pre style="margin: 0;">+<span id="LC1459" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">is<span class="idiff left">DeadEndId</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">fn</span></span><span class="idiff right"> </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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1460
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1460
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<pre style="margin: 0;"> <span id="LC1460" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [isExpandableApp: bottoming functions]</span></span>
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1461
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1461
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<pre style="margin: 0;"> <span id="LC1461" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isConLike</span> <span class="p">(</span><span class="n" style="color: #333;">idRuleMatchInfo</span> <span class="n" style="color: #333;">fn</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
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1462
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<pre style="margin: 0;"> <span id="LC1462" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">all_args_are_preds</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2202,7 +2202,7 @@ diffExpr top env (Tick n1 e1) (Tick n2 e2)</td>
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2202
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2202
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<pre style="margin: 0;"> <span id="LC2202" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- generated names, which are allowed to differ.</span></span>
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2203
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<pre style="margin: 0;"> <span id="LC2203" class="line" lang="haskell"><span class="n" style="color: #333;">diffExpr</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">App</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">App</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Var</span> <span class="n" style="color: #333;">absent</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span></span>
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2204
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2204
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<pre style="margin: 0;"> <span id="LC2204" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">App</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">App</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Var</span> <span class="n" style="color: #333;">absent2</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span></span>
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2205
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<pre style="margin: 0;">-<span id="LC2205" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">is<span class="idiff left">BottomingId</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">absent</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">isBottoming</span>Id</span> <span class="n" style="color: #333;">absent2</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span></span>
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<pre style="margin: 0;">+<span id="LC2205" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">is<span class="idiff left">DeadEndId</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">absent</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">isDeadEnd</span>Id</span> <span class="n" style="color: #333;">absent2</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span></span>
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<pre style="margin: 0;"> <span id="LC2206" class="line" lang="haskell"><span class="n" style="color: #333;">diffExpr</span> <span class="n" style="color: #333;">top</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">App</span> <span class="n" style="color: #333;">f1</span> <span class="n" style="color: #333;">a1</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">App</span> <span class="n" style="color: #333;">f2</span> <span class="n" style="color: #333;">a2</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC2207" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">diffExpr</span> <span class="n" style="color: #333;">top</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">f1</span> <span class="n" style="color: #333;">f2</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">diffExpr</span> <span class="n" style="color: #333;">top</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">a1</span> <span class="n" style="color: #333;">a2</span></span>
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<pre style="margin: 0;"> <span id="LC2208" class="line" lang="haskell"><span class="n" style="color: #333;">diffExpr</span> <span class="n" style="color: #333;">top</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Lam</span> <span class="n" style="color: #333;">b1</span> <span class="n" style="color: #333;">e1</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Lam</span> <span class="n" style="color: #333;">b2</span> <span class="n" style="color: #333;">e2</span><span class="p">)</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/commit/28a031e817d40fe0366a64e52da2f235b72cbfd3#d11203a9321005ba51a16d751c86f609d1f18c71"><strong>compiler/GHC/Iface/Tidy.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">@@ -39,7 +39,7 @@ import MkId ( mkDictSelRhs )</td>
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<pre style="margin: 0;"> <span id="LC39" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">IdInfo</span></span>
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<pre style="margin: 0;"> <span id="LC40" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.InstEnv</span></span>
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<pre style="margin: 0;"> <span id="LC41" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Core.Type</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">tidyTopType</span> <span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC42" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Demand</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">appIsBottom</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">isTopSig</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">is<span class="idiff left right">Bottoming</span>Sig</span> <span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC42" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Demand</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">appIsBottom</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">isTopSig</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">is<span class="idiff left right">DeadEnd</span>Sig</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC43" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Cpr</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">mkCprSig</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">botCpr</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC44" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">BasicTypes</span></span>
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<pre style="margin: 0;"> <span id="LC45" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Name</span> <span class="k" style="font-weight: 600;">hiding</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">varName</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">@@ -726,7 +726,7 @@ addExternal omit_prags expose_all id</td>
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<pre style="margin: 0;"> <span id="LC726" class="line" lang="haskell"> <span class="n" style="color: #333;">show_unfold</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">show_unfolding</span> <span class="n" style="color: #333;">unfolding</span></span>
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<pre style="margin: 0;"> <span id="LC727" class="line" lang="haskell"> <span class="n" style="color: #333;">never_active</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">isNeverActive</span> <span class="p">(</span><span class="n" style="color: #333;">inlinePragmaActivation</span> <span class="p">(</span><span class="n" style="color: #333;">inlinePragInfo</span> <span class="n" style="color: #333;">idinfo</span><span class="p">))</span></span>
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<pre style="margin: 0;"> <span id="LC728" class="line" lang="haskell"> <span class="n" style="color: #333;">loop_breaker</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">isStrongLoopBreaker</span> <span class="p">(</span><span class="n" style="color: #333;">occInfo</span> <span class="n" style="color: #333;">idinfo</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC729" class="line" lang="haskell"> <span class="n" style="color: #333;">bottoming_fn</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">is<span class="idiff left right">Bottoming</span>Sig</span> <span class="p">(</span><span class="n" style="color: #333;">strictnessInfo</span> <span class="n" style="color: #333;">idinfo</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC729" class="line" lang="haskell"> <span class="n" style="color: #333;">bottoming_fn</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">is<span class="idiff left right">DeadEnd</span>Sig</span> <span class="p">(</span><span class="n" style="color: #333;">strictnessInfo</span> <span class="n" style="color: #333;">idinfo</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC730" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC731" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Stuff to do with the Id's unfolding</span></span>
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<pre style="margin: 0;"> <span id="LC732" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- We leave the unfolding there even if there is a worker</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">@@ -1240,7 +1240,7 @@ tidyTopIdInfo dflags rhs_tidy_env name orig_rhs tidy_rhs idinfo show_unfold</td>
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<pre style="margin: 0;"> <span id="LC1240" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">minimal_unfold_info</span></span>
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<pre style="margin: 0;"> <span id="LC1241" class="line" lang="haskell"> <span class="n" style="color: #333;">minimal_unfold_info</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">zapUnfolding</span> <span class="n" style="color: #333;">unf_info</span></span>
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<pre style="margin: 0;"> <span id="LC1242" class="line" lang="haskell"> <span class="n" style="color: #333;">unf_from_rhs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkTopUnfolding</span> <span class="n" style="color: #333;">dflags</span> <span class="n" style="color: #333;">is_bot</span> <span class="n" style="color: #333;">tidy_rhs</span></span>
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<pre style="margin: 0;">-<span id="LC1243" class="line" lang="haskell"> <span class="n" style="color: #333;">is_bot</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">is<span class="idiff left right">Bottoming</span>Sig</span> <span class="n" style="color: #333;">final_sig</span></span>
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<pre style="margin: 0;">+<span id="LC1243" class="line" lang="haskell"> <span class="n" style="color: #333;">is_bot</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">is<span class="idiff left right">DeadEnd</span>Sig</span> <span class="n" style="color: #333;">final_sig</span></span>
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<pre style="margin: 0;"> <span id="LC1244" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- NB: do *not* expose the worker if show_unfold is off,</span></span>
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<pre style="margin: 0;"> <span id="LC1245" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- because that means this thing is a loop breaker or</span></span>
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<pre style="margin: 0;"> <span id="LC1246" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- marked NOINLINE or something like that</span></span>
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<li id="06ff7bac58fd8cfe0c17b81963b03f4cce86a065">
<a href="https://gitlab.haskell.org/ghc/ghc/commit/28a031e817d40fe0366a64e52da2f235b72cbfd3#06ff7bac58fd8cfe0c17b81963b03f4cce86a065"><strong>compiler/GHC/IfaceToCore.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">@@ -1508,7 +1508,7 @@ tcUnfolding toplvl name _ info (IfCoreUnfold stable if_expr)</td>
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<pre style="margin: 0;"> <span id="LC1508" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">NoUnfolding</span></span>
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<pre style="margin: 0;"> <span id="LC1509" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">expr</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">mkUnfolding</span> <span class="n" style="color: #333;">dflags</span> <span class="n" style="color: #333;">unf_src</span></span>
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<pre style="margin: 0;"> <span id="LC1510" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">True</span> <span class="cm" style="color: #998; font-style: italic;">{- Top level -}</span></span>
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<pre style="margin: 0;">-<span id="LC1511" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">is<span class="idiff left right">Bottoming</span>Sig</span> <span class="n" style="color: #333;">strict_sig</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC1511" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">is<span class="idiff left right">DeadEnd</span>Sig</span> <span class="n" style="color: #333;">strict_sig</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC1512" class="line" lang="haskell"> <span class="n" style="color: #333;">expr</span></span>
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<pre style="margin: 0;"> <span id="LC1513" class="line" lang="haskell"> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC1514" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/commit/28a031e817d40fe0366a64e52da2f235b72cbfd3#10828b99499a9ef1e9839b007762c68994bcb036"><strong>compiler/basicTypes/Demand.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -28,8 +28,8 @@ module Demand (</td>
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<pre style="margin: 0;"> <span id="LC28" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">DmdEnv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">emptyDmdEnv</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC29" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">peelFV</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">findIdDemand</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC30" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC31" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Divergence</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="nf" style="color: #900; font-weight: 600;">lubDivergence</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">is<span class="idiff left right">Bot</span>Div</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">topDiv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">botDiv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">exnDiv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">conDiv</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC32" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">appIsBottom</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">is<span class="idiff left right">Bottoming</span>Sig</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">pprIfaceStrictSig</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC31" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Divergence</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="nf" style="color: #900; font-weight: 600;">lubDivergence</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">is<span class="idiff left right">DeadEnd</span>Div</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">topDiv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">botDiv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">exnDiv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">conDiv</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC32" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">appIsBottom</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">is<span class="idiff left right">DeadEnd</span>Sig</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">pprIfaceStrictSig</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC33" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">StrictSig</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="nf" style="color: #900; font-weight: 600;">mkStrictSigForArity</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">mkClosedStrictSig</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC34" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">emptySig</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">botSig</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">cprProdSig</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC35" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">isTopSig</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">hasDemandEnvSig</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">@@ -240,7 +240,7 @@ The solution is to give 'raiseIO#' 'topDiv' instead of 'botDiv', so that its</td>
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<pre style="margin: 0;"> <span id="LC240" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">of dead code, namely when 'raiseIO#' occurs in a case scrutinee. Hence we need</span></span>
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<pre style="margin: 0;"> <span id="LC241" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">to give it 'exnDiv', which was conceived entirely for this reason. The default</span></span>
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<pre style="margin: 0;"> <span id="LC242" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">FV demand of 'exnDiv' is lazy, its default arg dmd is absent, but otherwise (in</span></span>
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<pre style="margin: 0;">-<span id="LC243" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">terms of 'Demand.is<span class="idiff left right">Bot</span>Div') it behaves exactly as 'botDiv', so that dead code</span></span>
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<pre style="margin: 0;">+<span id="LC243" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">terms of 'Demand.is<span class="idiff left right">DeadEnd</span>Div') it behaves exactly as 'botDiv', so that dead code</span></span>
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<pre style="margin: 0;"> <span id="LC244" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">elimination works as expected.</span></span>
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<pre style="margin: 0;"> <span id="LC245" 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="LC246" 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">@@ -988,7 +988,7 @@ splitProdDmd_maybe (JD { sd = s, ud = u })</td>
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<pre style="margin: 0;"> <span id="LC988" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">Divergence</span></span>
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<pre style="margin: 0;"> <span id="LC989" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Diverges</span> <span class="c1" style="color: #998; font-style: italic;">-- ^ Definitely throws an imprecise exception or diverges.</span></span>
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<pre style="margin: 0;"> <span id="LC990" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">ExnOrDiv</span> <span class="c1" style="color: #998; font-style: italic;">-- ^ Definitely throws a *precise* exception, an imprecise</span></span>
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<pre style="margin: 0;">-<span id="LC991" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- exception or diverges. Never converges, hence 'is<span class="idiff left right">Bot</span>Div'!</span></span>
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<pre style="margin: 0;">+<span id="LC991" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- exception or diverges. Never converges, hence 'is<span class="idiff left right">DeadEnd</span>Div'!</span></span>
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<pre style="margin: 0;"> <span id="LC992" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See scenario 2 in Note [Precise exceptions and strictness analysis].</span></span>
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<pre style="margin: 0;"> <span id="LC993" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">ConOrDiv</span> <span class="c1" style="color: #998; font-style: italic;">-- ^ Definitely converges, throws an imprecise exception or</span></span>
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<pre style="margin: 0;"> <span id="LC994" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- diverges. Never throws a precise exception! Important for</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">@@ -1040,11 +1040,11 @@ conDiv = ConOrDiv</td>
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<pre style="margin: 0;"> <span id="LC1040" class="line" lang="haskell"><span class="n" style="color: #333;">botDiv</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Diverges</span></span>
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<pre style="margin: 0;"> <span id="LC1041" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1042" class="line" lang="haskell"><span class="cd">-- | True if the result indicates that evaluation will not return.</span></span>
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1043
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<pre style="margin: 0;">-<span id="LC1043" class="line" lang="haskell"><span class="n" style="color: #333;">is<span class="idiff left right">Bot</span>Div</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Divergence</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="LC1044" class="line" lang="haskell"><span class="n" style="color: #333;">is<span class="idiff left right">Bot</span>Div</span> <span class="kt" style="color: #458; font-weight: 600;">Diverges</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
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<pre style="margin: 0;">-<span id="LC1045" class="line" lang="haskell"><span class="n" style="color: #333;">is<span class="idiff left right">Bot</span>Div</span> <span class="kt" style="color: #458; font-weight: 600;">ExnOrDiv</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
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<pre style="margin: 0;">-<span id="LC1046" class="line" lang="haskell"><span class="n" style="color: #333;">is<span class="idiff left right">Bot</span>Div</span> <span class="kt" style="color: #458; font-weight: 600;">ConOrDiv</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="LC1047" class="line" lang="haskell"><span class="n" style="color: #333;">is<span class="idiff left right">Bot</span>Div</span> <span class="kt" style="color: #458; font-weight: 600;">Dunno</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="LC1043" class="line" lang="haskell"><span class="n" style="color: #333;">is<span class="idiff left right">DeadEnd</span>Div</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Divergence</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="LC1044" class="line" lang="haskell"><span class="n" style="color: #333;">is<span class="idiff left right">DeadEnd</span>Div</span> <span class="kt" style="color: #458; font-weight: 600;">Diverges</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
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<pre style="margin: 0;">+<span id="LC1045" class="line" lang="haskell"><span class="n" style="color: #333;">is<span class="idiff left right">DeadEnd</span>Div</span> <span class="kt" style="color: #458; font-weight: 600;">ExnOrDiv</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
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<pre style="margin: 0;">+<span id="LC1046" class="line" lang="haskell"><span class="n" style="color: #333;">is<span class="idiff left right">DeadEnd</span>Div</span> <span class="kt" style="color: #458; font-weight: 600;">ConOrDiv</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="LC1047" class="line" lang="haskell"><span class="n" style="color: #333;">is<span class="idiff left right">DeadEnd</span>Div</span> <span class="kt" style="color: #458; font-weight: 600;">Dunno</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="LC1048" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1049" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Notes [Default demand on free variables]</span></span>
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<pre style="margin: 0;"> <span id="LC1050" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- and [defaultFvDmd vs. defaultArgDmd]</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">@@ -1739,8 +1739,8 @@ strictSigDmdEnv :: StrictSig -> DmdEnv</td>
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<pre style="margin: 0;"> <span id="LC1739" class="line" lang="haskell"><span class="n" style="color: #333;">strictSigDmdEnv</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StrictSig</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">DmdType</span> <span class="n" style="color: #333;">env</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">))</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">env</span></span>
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<pre style="margin: 0;"> <span id="LC1740" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1741" class="line" lang="haskell"><span class="cd">-- | True if the signature diverges or throws an exception</span></span>
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<pre style="margin: 0;">-<span id="LC1742" class="line" lang="haskell"><span class="n" style="color: #333;">is<span class="idiff left right">Bottoming</span>Sig</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">StrictSig</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="LC1743" class="line" lang="haskell"><span class="n" style="color: #333;">is<span class="idiff left">BottomingSig</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">StrictSig</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">DmdType</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff">_</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff">_</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">res</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">isBot</span>Div</span> <span class="n" style="color: #333;">res</span></span>
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<pre style="margin: 0;">+<span id="LC1742" class="line" lang="haskell"><span class="n" style="color: #333;">is<span class="idiff left right">DeadEnd</span>Sig</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">StrictSig</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="LC1743" class="line" lang="haskell"><span class="n" style="color: #333;">is<span class="idiff left">DeadEndSig</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">StrictSig</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">DmdType</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff">_</span></span><span class="idiff"> </span><span class="kr" style="font-weight: 600;"><span class="idiff">_</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">res</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">isDeadEnd</span>Div</span> <span class="n" style="color: #333;">res</span></span>
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<pre style="margin: 0;"> <span id="LC1744" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1745" class="line" lang="haskell"><span class="cd">-- | See 'emptyDmdType'.</span></span>
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<pre style="margin: 0;"> <span id="LC1746" class="line" lang="haskell"><span class="n" style="color: #333;">emptySig</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Divergence</span> <span class="o" style="font-weight: 600;">-></span><span class="kt" style="color: #458; font-weight: 600;">StrictSig</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">@@ -1886,7 +1886,7 @@ binders \pqr and \xyz; see Note [Use one-shot information] in OccurAnal.</td>
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<pre style="margin: 0;"> <span id="LC1886" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Unsaturated applications]</span></span>
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<pre style="margin: 0;"> <span id="LC1887" class="line" lang="haskell"><span class="n" style="color: #333;">appIsBottom</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">StrictSig</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</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="LC1888" class="line" lang="haskell"><span class="n" style="color: #333;">appIsBottom</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StrictSig</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">DmdType</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">ds</span> <span class="n" style="color: #333;">res</span><span class="p">))</span> <span class="n" style="color: #333;">n</span></span>
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<pre style="margin: 0;">-<span id="LC1889" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">is<span class="idiff left right">Bot</span>Div</span> <span class="n" style="color: #333;">res</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">not</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">lengthExceeds</span> <span class="n" style="color: #333;">ds</span> <span class="n" style="color: #333;">n</span></span>
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<pre style="margin: 0;">+<span id="LC1889" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">is<span class="idiff left right">DeadEnd</span>Div</span> <span class="n" style="color: #333;">res</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">not</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">lengthExceeds</span> <span class="n" style="color: #333;">ds</span> <span class="n" style="color: #333;">n</span></span>
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<pre style="margin: 0;"> <span id="LC1890" class="line" lang="haskell"><span class="n" style="color: #333;">appIsBottom</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
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<pre style="margin: 0;"> <span id="LC1891" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1892" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{-</span></span>
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<li id="2c842f2f15e67826dc12cc363525b56acb7b7882">
<a href="https://gitlab.haskell.org/ghc/ghc/commit/28a031e817d40fe0366a64e52da2f235b72cbfd3#2c842f2f15e67826dc12cc363525b56acb7b7882"><strong>compiler/basicTypes/Id.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">@@ -70,7 +70,7 @@ module Id (</td>
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<pre style="margin: 0;"> <span id="LC70" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">isDataConWrapId</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">isDataConWrapId_maybe</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC71" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">isDataConId_maybe</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC72" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">idDataCon</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC73" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">isConLikeId</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">is<span class="idiff left right">Bottoming</span>Id</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">idIsFrom</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC73" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">isConLikeId</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">is<span class="idiff left right">DeadEnd</span>Id</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">idIsFrom</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC74" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">hasNoBinding</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC75" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC76" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- ** Join variables</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">@@ -638,9 +638,9 @@ idFunRepArity :: Id -> RepArity</td>
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<pre style="margin: 0;"> <span id="LC638" class="line" lang="haskell"><span class="n" style="color: #333;">idFunRepArity</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">countFunRepArgs</span> <span class="p">(</span><span class="n" style="color: #333;">idArity</span> <span class="n" style="color: #333;">x</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">idType</span> <span class="n" style="color: #333;">x</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC639" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC640" class="line" lang="haskell"><span class="cd">-- | Returns true if an application to n args would diverge</span></span>
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<pre style="margin: 0;">-<span id="LC641" class="line" lang="haskell"><span class="n" style="color: #333;">is<span class="idiff left right">Bottoming</span>Id</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Var</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="LC642" class="line" lang="haskell"><span class="n" style="color: #333;">is<span class="idiff left right">Bottoming</span>Id</span> <span class="n" style="color: #333;">v</span></span>
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<pre style="margin: 0;">-<span id="LC643" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isId</span> <span class="n" style="color: #333;">v</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">is<span class="idiff left right">Bottoming</span>Sig</span> <span class="p">(</span><span class="n" style="color: #333;">idStrictness</span> <span class="n" style="color: #333;">v</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC641" class="line" lang="haskell"><span class="n" style="color: #333;">is<span class="idiff left right">DeadEnd</span>Id</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Var</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="LC642" class="line" lang="haskell"><span class="n" style="color: #333;">is<span class="idiff left right">DeadEnd</span>Id</span> <span class="n" style="color: #333;">v</span></span>
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<pre style="margin: 0;">+<span id="LC643" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isId</span> <span class="n" style="color: #333;">v</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">is<span class="idiff left right">DeadEnd</span>Sig</span> <span class="p">(</span><span class="n" style="color: #333;">idStrictness</span> <span class="n" style="color: #333;">v</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC644" 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="kt" style="color: #458; font-weight: 600;">False</span></span>
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<pre style="margin: 0;"> <span id="LC645" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC646" class="line" lang="haskell"><span class="cd">-- | Accesses the 'Id''s 'strictnessInfo'.</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/commit/28a031e817d40fe0366a64e52da2f235b72cbfd3#2f8fee2abca5d63f3b2a113efc849e4e6054c49a"><strong>compiler/basicTypes/MkId.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">@@ -1227,7 +1227,7 @@ mkPrimOpId prim_op</td>
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<pre style="margin: 0;"> <span id="LC1227" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1228" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- PrimOps don't ever construct a product, but we want to preserve bottoms</span></span>
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<pre style="margin: 0;"> <span id="LC1229" class="line" lang="haskell"> <span class="n" style="color: #333;">cpr</span></span>
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<pre style="margin: 0;">-<span id="LC1230" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">is<span class="idiff left right">Bot</span>Div</span> <span class="p">(</span><span class="n" style="color: #333;">snd</span> <span class="p">(</span><span class="n" style="color: #333;">splitStrictSig</span> <span class="n" style="color: #333;">strict_sig</span><span class="p">))</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">botCpr</span></span>
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<pre style="margin: 0;">+<span id="LC1230" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">is<span class="idiff left right">DeadEnd</span>Div</span> <span class="p">(</span><span class="n" style="color: #333;">snd</span> <span class="p">(</span><span class="n" style="color: #333;">splitStrictSig</span> <span class="n" style="color: #333;">strict_sig</span><span class="p">))</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">botCpr</span></span>
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<pre style="margin: 0;"> <span id="LC1231" 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;">topCpr</span></span>
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<pre style="margin: 0;"> <span id="LC1232" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1233" class="line" lang="haskell"> <span class="n" style="color: #333;">info</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">noCafIdInfo</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/commit/28a031e817d40fe0366a64e52da2f235b72cbfd3#8a8110b33eb43e4af5137cbe4b9b062abad7f6c2"><strong>compiler/simplCore/CallArity.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">@@ -701,7 +701,7 @@ trimArity v a = minimum [a, max_arity_by_type, max_arity_by_strsig]</td>
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<pre style="margin: 0;"> <span id="LC701" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC702" class="line" lang="haskell"> <span class="n" style="color: #333;">max_arity_by_type</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">length</span> <span class="p">(</span><span class="n" style="color: #333;">typeArity</span> <span class="p">(</span><span class="n" style="color: #333;">idType</span> <span class="n" style="color: #333;">v</span><span class="p">))</span></span>
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<pre style="margin: 0;"> <span id="LC703" class="line" lang="haskell"> <span class="n" style="color: #333;">max_arity_by_strsig</span></span>
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<pre style="margin: 0;">-<span id="LC704" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">is<span class="idiff left right">Bot</span>Div</span> <span class="n" style="color: #333;">result_info</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">length</span> <span class="n" style="color: #333;">demands</span></span>
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<pre style="margin: 0;">+<span id="LC704" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">is<span class="idiff left right">DeadEnd</span>Div</span> <span class="n" style="color: #333;">result_info</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">length</span> <span class="n" style="color: #333;">demands</span></span>
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<pre style="margin: 0;"> <span id="LC705" 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;">a</span></span>
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<pre style="margin: 0;"> <span id="LC706" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC707" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">demands</span><span class="p">,</span> <span class="n" style="color: #333;">result_info</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">splitStrictSig</span> <span class="p">(</span><span class="n" style="color: #333;">idStrictness</span> <span class="n" style="color: #333;">v</span><span class="p">)</span></span>
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<li id="1bcf2cbe3ecaeb06b9a4790c942b122a190c0209">
<a href="https://gitlab.haskell.org/ghc/ghc/commit/28a031e817d40fe0366a64e52da2f235b72cbfd3#1bcf2cbe3ecaeb06b9a4790c942b122a190c0209"><strong>compiler/simplCore/FloatOut.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">@@ -20,7 +20,7 @@ import CoreMonad ( FloatOutSwitches(..) )</td>
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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="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Driver.Session</span></span>
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<pre style="margin: 0;"> <span id="LC22" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">ErrUtils</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">dumpIfSet_dyn</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">DumpFormat</span> <span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">)</span> <span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC23" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Id</span> <span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">Id</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">idArity</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">idType</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">is<span class="idiff left right">Bottoming</span>Id</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC23" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Id</span> <span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">Id</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">idArity</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">idType</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">is<span class="idiff left right">DeadEnd</span>Id</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC24" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">isJoinId</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">isJoinId_maybe</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC25" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">SetLevels</span></span>
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<pre style="margin: 0;"> <span id="LC26" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">UniqSupply</span> <span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">UniqSupply</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">@@ -221,7 +221,7 @@ floatBind (NonRec (TB var _) rhs)</td>
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<pre style="margin: 0;"> <span id="LC221" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC222" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- A tiresome hack:</span></span>
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<pre style="margin: 0;"> <span id="LC223" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- see Note [Bottoming floats: eta expansion] in SetLevels</span></span>
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<pre style="margin: 0;">-<span id="LC224" 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;">is<span class="idiff left">BottomingId</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">var</span></span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">etaExpand</span> <span class="p">(</span><span class="n" style="color: #333;">idArity</span> <span class="n" style="color: #333;">var</span><span class="p">)</span> <span class="n" style="color: #333;">rhs'</span></span>
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<pre style="margin: 0;">+<span id="LC224" 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;">is<span class="idiff left">DeadEndId</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">var</span></span><span class="idiff right"> </span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">etaExpand</span> <span class="p">(</span><span class="n" style="color: #333;">idArity</span> <span class="n" style="color: #333;">var</span><span class="p">)</span> <span class="n" style="color: #333;">rhs'</span></span>
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<pre style="margin: 0;"> <span id="LC225" 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;">rhs'</span></span>
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226
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<pre style="margin: 0;"> <span id="LC226" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC227" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="p">(</span><span class="n" style="color: #333;">fs</span><span class="p">,</span> <span class="n" style="color: #333;">rhs_floats</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;">var</span> <span class="n" style="color: #333;">rhs''</span><span class="p">])</span> <span class="p">}</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/commit/28a031e817d40fe0366a64e52da2f235b72cbfd3#1bfa556ba999ac778958824c744da92d1038cbc0"><strong>compiler/simplCore/LiberateCase.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">@@ -158,8 +158,8 @@ libCaseBind env (Rec pairs)</td>
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158
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<pre style="margin: 0;"> <span id="LC158" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Let</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Rec</span> <span class="n" style="color: #333;">dup_pairs</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Var</span> <span class="n" style="color: #333;">unitDataConId</span><span class="p">)</span></span>
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159
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<pre style="margin: 0;"> <span id="LC159" class="line" lang="haskell"></span>
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160
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<pre style="margin: 0;"> <span id="LC160" class="line" lang="haskell"> <span class="n" style="color: #333;">ok_pair</span> <span class="p">(</span><span class="n" style="color: #333;">id</span><span class="p">,</span><span class="kr" style="font-weight: 600;">_</span><span class="p">)</span></span>
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161
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<pre style="margin: 0;">-<span id="LC161" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">idArity</span> <span class="n" style="color: #333;">id</span> <span class="o" style="font-weight: 600;">></span> <span class="mi" style="color: #099;">0</span> <span class="idiff left right"> </span><span class="c1" style="color: #998; font-style: italic;">-- Note [Only functions!]</span></span>
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162
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<pre style="margin: 0;">-<span id="LC162" class="line" lang="haskell"> <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;">is<span class="idiff left">BottomingId</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">id</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff right"> </span> <span class="c1" style="color: #998; font-style: italic;">-- Note [Not bottoming ids]</span></span>
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<pre style="margin: 0;">+<span id="LC161" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">idArity</span> <span class="n" style="color: #333;">id</span> <span class="o" style="font-weight: 600;">></span> <span class="mi" style="color: #099;">0</span> <span class="c1" style="color: #998; font-style: italic;">-- Note [Only functions!]</span></span>
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<pre style="margin: 0;">+<span id="LC162" class="line" lang="haskell"> <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;">is<span class="idiff left">DeadEndId</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">id</span></span><span class="p"><span class="idiff right">)</span></span> <span class="c1" style="color: #998; font-style: italic;">-- Note [Not bottoming ids]</span></span>
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<pre style="margin: 0;"> <span id="LC163" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC164" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- Note [Not bottoming Ids]</span></span>
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<pre style="margin: 0;"> <span id="LC165" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/commit/28a031e817d40fe0366a64e52da2f235b72cbfd3#32cfa1d436eed1ea5106ea7f4f67090c60a01ed1"><strong>compiler/simplCore/SetLevels.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">@@ -293,7 +293,7 @@ lvlTopBind env (Rec pairs)</td>
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293
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<pre style="margin: 0;"> <span id="LC293" class="line" lang="haskell"><span class="n" style="color: #333;">lvl_top</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LevelEnv</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">RecFlag</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;">CoreExpr</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LvlM</span> <span class="kt" style="color: #458; font-weight: 600;">LevelledExpr</span></span>
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<pre style="margin: 0;"> <span id="LC294" class="line" lang="haskell"><span class="n" style="color: #333;">lvl_top</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">is_rec</span> <span class="n" style="color: #333;">bndr</span> <span class="n" style="color: #333;">rhs</span></span>
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<pre style="margin: 0;"> <span id="LC295" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">lvlRhs</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">is_rec</span></span>
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<pre style="margin: 0;">-<span id="LC296" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">is<span class="idiff left right">Bottoming</span>Id</span> <span class="n" style="color: #333;">bndr</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC296" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">is<span class="idiff left right">DeadEnd</span>Id</span> <span class="n" style="color: #333;">bndr</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC297" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="c1" style="color: #998; font-style: italic;">-- Not a join point</span></span>
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<pre style="margin: 0;"> <span id="LC298" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">freeVars</span> <span class="n" style="color: #333;">rhs</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC299" class="line" lang="haskell"></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/commit/28a031e817d40fe0366a64e52da2f235b72cbfd3#32d53a69dcadfb969898a49221a1ff152ea0677a"><strong>compiler/simplCore/SimplUtils.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">@@ -499,7 +499,7 @@ mkArgInfo env fun rules n_val_args call_cont</td>
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<pre style="margin: 0;"> <span id="LC499" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- top-level bindings for (say) strings into</span></span>
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500
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500
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<pre style="margin: 0;"> <span id="LC500" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- calls to error. But now we are more careful about</span></span>
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501
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<pre style="margin: 0;"> <span id="LC501" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- inlining lone variables, so its ok (see SimplUtils.analyseCont)</span></span>
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502
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<pre style="margin: 0;">-<span id="LC502" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">is<span class="idiff left right">Bot</span>Div</span> <span class="n" style="color: #333;">result_info</span> <span class="kr" style="font-weight: 600;">then</span></span>
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502
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<pre style="margin: 0;">+<span id="LC502" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">is<span class="idiff left right">DeadEnd</span>Div</span> <span class="n" style="color: #333;">result_info</span> <span class="kr" style="font-weight: 600;">then</span></span>
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503
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503
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<pre style="margin: 0;"> <span id="LC503" class="line" lang="haskell"> <span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">isStrictDmd</span> <span class="n" style="color: #333;">demands</span> <span class="c1" style="color: #998; font-style: italic;">-- Finite => result is bottom</span></span>
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504
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<pre style="margin: 0;"> <span id="LC504" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">else</span></span>
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505
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<pre style="margin: 0;"> <span id="LC505" class="line" lang="haskell"> <span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">isStrictDmd</span> <span class="n" style="color: #333;">demands</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">vanilla_stricts</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">@@ -1141,7 +1141,7 @@ preInlineUnconditionally</td>
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1141
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1141
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<pre style="margin: 0;"> <span id="LC1141" class="line" lang="haskell"><span class="n" style="color: #333;">preInlineUnconditionally</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">top_lvl</span> <span class="n" style="color: #333;">bndr</span> <span class="n" style="color: #333;">rhs</span> <span class="n" style="color: #333;">rhs_env</span></span>
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1142
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1142
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<pre style="margin: 0;"> <span id="LC1142" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">not</span> <span class="n" style="color: #333;">pre_inline_unconditionally</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>
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1143
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1143
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<pre style="margin: 0;"> <span id="LC1143" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">not</span> <span class="n" style="color: #333;">active</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>
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1144
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<pre style="margin: 0;">-<span id="LC1144" 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;">top_lvl</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">is<span class="idiff left">BottomingId</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">bndr</span></span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="c1" style="color: #998; font-style: italic;">-- Note [Top-level bottoming Ids]</span></span>
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1144
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<pre style="margin: 0;">+<span id="LC1144" 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;">top_lvl</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">is<span class="idiff left">DeadEndId</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">bndr</span></span><span class="idiff right"> </span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="c1" style="color: #998; font-style: italic;">-- Note [Top-level bottoming Ids]</span></span>
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1145
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1145
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<pre style="margin: 0;"> <span id="LC1145" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isCoVar</span> <span class="n" style="color: #333;">bndr</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="c1" style="color: #998; font-style: italic;">-- Note [Do not inline CoVars unconditionally]</span></span>
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1146
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1146
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<pre style="margin: 0;"> <span id="LC1146" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isExitJoinId</span> <span class="n" style="color: #333;">bndr</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="c1" style="color: #998; font-style: italic;">-- Note [Do not inline exit join points]</span></span>
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1147
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1147
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<pre style="margin: 0;"> <span id="LC1147" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- in module Exitify</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">@@ -3513,7 +3513,7 @@ mkLetUnfolding dflags top_lvl src id new_rhs</td>
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<pre style="margin: 0;"> <span id="LC3513" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- we don't.) The simple thing is always to have one.</span></span>
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3514
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<pre style="margin: 0;"> <span id="LC3514" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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3515
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3515
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<pre style="margin: 0;"> <span id="LC3515" class="line" lang="haskell"> <span class="n" style="color: #333;">is_top_lvl</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">isTopLevel</span> <span class="n" style="color: #333;">top_lvl</span></span>
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3516
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<pre style="margin: 0;">-<span id="LC3516" class="line" lang="haskell"> <span class="n" style="color: #333;">is_bottoming</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">is<span class="idiff left right">Bottoming</span>Id</span> <span class="n" style="color: #333;">id</span></span>
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<pre style="margin: 0;">+<span id="LC3516" class="line" lang="haskell"> <span class="n" style="color: #333;">is_bottoming</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">is<span class="idiff left right">DeadEnd</span>Id</span> <span class="n" style="color: #333;">id</span></span>
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3517
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<pre style="margin: 0;"> <span id="LC3517" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC3518" 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="LC3519" class="line" lang="haskell"><span class="n" style="color: #333;">simplStableUnfolding</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SimplEnv</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TopLevelFlag</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/commit/28a031e817d40fe0366a64e52da2f235b72cbfd3#03a0eeb10ac23c921a7aa0f0b5a56d844dcbbe86"><strong>compiler/specialise/SpecConstr.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">@@ -1599,8 +1599,8 @@ specialise env bind_calls (RI { ri_fn = fn, ri_lam_bndrs = arg_bndrs</td>
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<pre style="margin: 0;"> <span id="LC1599" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">ri_lam_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">body</span><span class="p">,</span> <span class="n" style="color: #333;">ri_arg_occs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">arg_occs</span> <span class="p">})</span></span>
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<pre style="margin: 0;"> <span id="LC1600" class="line" lang="haskell"> <span class="n" style="color: #333;">spec_info</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SI</span> <span class="p">{</span> <span class="n" style="color: #333;">si_specs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">specs</span><span class="p">,</span> <span class="n" style="color: #333;">si_n_specs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">spec_count</span></span>
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1601
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<pre style="margin: 0;"> <span id="LC1601" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">si_mb_unspec</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mb_unspec</span> <span class="p">})</span></span>
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1602
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<pre style="margin: 0;">-<span id="LC1602" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">is<span class="idiff left">BottomingId</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">fn</span></span><span class="idiff right"> </span> <span class="c1" style="color: #998; font-style: italic;">-- Note [Do not specialise diverging functions]</span></span>
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1603
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<pre style="margin: 0;">-<span id="LC1603" class="line" lang="haskell"> <span class="idiff left right"> </span><span class="c1" style="color: #998; font-style: italic;">-- and do not generate specialisation seeds from its RHS</span></span>
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<pre style="margin: 0;">+<span id="LC1602" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">is<span class="idiff left">DeadEndId</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">fn</span></span> <span class="c1" style="color: #998; font-style: italic;">-- Note [Do not specialise diverging functions]</span></span>
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<pre style="margin: 0;">+<span id="LC1603" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- and do not generate specialisation seeds from its RHS</span></span>
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<pre style="margin: 0;"> <span id="LC1604" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="c1" style="color: #998; font-style: italic;">-- pprTrace "specialise bot" (ppr fn) $</span></span>
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<pre style="margin: 0;"> <span id="LC1605" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">nullUsage</span><span class="p">,</span> <span class="n" style="color: #333;">spec_info</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC1606" class="line" lang="haskell"></span>
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