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<h3>
Simon Jakobi pushed to branch wip/sjakobi/nondetfolds
at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
</h3>
<h4>
Commits:
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<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5006a7e1088511af71ef009debcbf97bb7e801a4">5006a7e1</a></strong>
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<span>by Simon Jakobi</span>
<i>at 2020-04-02T19:15:05+02:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Improve some folds over Uniq[D]FM
* Replace some non-deterministic lazy folds with
strict folds.
* Replace some O(n log n) folds in deterministic order
with O(n) non-deterministic folds.
* Replace some folds with set-operations on the underlying
IntMaps.
This reduces max residency when compiling
`nofib/spectral/simple/Main.hs` with -O0 by about 1%.
Maximum residency when compiling Cabal also seems reduced on the
order of 3-9%.
</pre>
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<h4>21 changed files:</h4>
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<a href="#3aba9ceb20d68f25343fe3a27b2b7a4f8fea68da">
compiler/GHC/CmmToAsm/Reg/Graph/SpillClean.hs
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<li class="file-stats">
<a href="#91648438362e5a35363d2bb7abb04016dedd7d7e">
compiler/GHC/Core/FamInstEnv.hs
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<li class="file-stats">
<a href="#9e2ce77a946950b2d19d75c55f671c048a5645bd">
compiler/GHC/Core/Op/OccurAnal.hs
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<li class="file-stats">
<a href="#de7d9d388885ce6e3a45a39fac6e2c36a7f94f69">
compiler/GHC/Core/Op/SetLevels.hs
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<li class="file-stats">
<a href="#d52bc1e90d7432064a2998de2a2751b6fecb7680">
compiler/GHC/Core/Op/Specialise.hs
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<li class="file-stats">
<a href="#039e8f5676356ef05c90af828aae48aac7296e47">
compiler/GHC/Core/TyCo/FVs.hs
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<li class="file-stats">
<a href="#89a2e0e1a3095c7a42b10f2819049908908080e8">
compiler/GHC/Core/Unify.hs
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<li class="file-stats">
<a href="#74a7b3677ea9cb2138e0b682ce38fd67dbf57c14">
compiler/GHC/HsToCore/Usage.hs
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<li class="file-stats">
<a href="#9e7e910f99e3a46d2caa3b0102d7481a88f80960">
compiler/GHC/Rename/Source.hs
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<a href="#657eec52eed3c8be846a0b60eb6088d5f465de8a">
compiler/GHC/Stg/Lift/Analysis.hs
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<li class="file-stats">
<a href="#d09e98aae6ad2eb59d08eac7894b68c0ab820cda">
compiler/GHC/Types/Demand.hs
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<li class="file-stats">
<a href="#266bc13b57ed8c43a461b6d9a429c917879e16b4">
compiler/GHC/Types/Unique/DFM.hs
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<li class="file-stats">
<a href="#dd1734ed93e4694f773dd468a1855524e6bbca0f">
compiler/GHC/Types/Unique/DSet.hs
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<li class="file-stats">
<a href="#b0b25f424f682f899323d3f74070dbe8fd59628e">
compiler/GHC/Types/Unique/FM.hs
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<a href="#71ee8226465c3f394f18d0bddd00077942947740">
compiler/GHC/Types/Unique/Set.hs
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<li class="file-stats">
<a href="#07e36027465263e8b90313979f12e1f4a9ce64a5">
compiler/GHC/Types/Var/Env.hs
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<a href="#8fa3c53ff1558af938c045405b5e177c50e91308">
compiler/GHC/Types/Var/Set.hs
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<li class="file-stats">
<a href="#89165943f253c43100bca06548eba40ff0519ca5">
compiler/typecheck/TcEvidence.hs
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<li class="file-stats">
<a href="#75d517f701402b106e4d98d255eb24b57ba72aab">
compiler/typecheck/TcSimplify.hs
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<a href="#341fd962c5f2c9fcf8be3dbdaa9a14ee1538af07">
compiler/typecheck/TcType.hs
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<li class="file-stats">
<a href="#fadb1ee8bcf9d6112f1216f52f995b0298a593b2">
compiler/utils/GraphOps.hs
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<h4>Changes:</h4>
<li id="3aba9ceb20d68f25343fe3a27b2b7a4f8fea68da">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5006a7e1088511af71ef009debcbf97bb7e801a4#3aba9ceb20d68f25343fe3a27b2b7a4f8fea68da"><strong>compiler/GHC/CmmToAsm/Reg/Graph/SpillClean.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">@@ -554,8 +554,9 @@ delAssoc :: (Uniquable a)</td>
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<pre style="margin: 0;"> <span id="LC554" class="line" lang="haskell"><span class="n" style="color: #333;">delAssoc</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">m</span></span>
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<pre style="margin: 0;"> <span id="LC555" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">aSet</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">lookupUFM</span> <span class="n" style="color: #333;">m</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;"> <span id="LC556" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">m1</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">delFromUFM</span> <span class="n" style="color: #333;">m</span> <span class="n" style="color: #333;">a</span></span>
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557
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<pre style="margin: 0;">-<span id="LC557" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetFoldUniqSet</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">delAssoc1</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">m</span><span class="p">)</span> <span class="n" style="color: #333;">m1</span> <span class="n" style="color: #333;">aSet</span></span>
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<pre style="margin: 0;">-<span id="LC558" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use nonDetFoldUFM here because deletion is commutative</span></span>
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<pre style="margin: 0;">+<span id="LC557" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetStrictFoldUniqSet</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">delAssoc1</span> <span class="n" style="color: #333;">x</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">m</span><span class="p">)</span> <span class="n" style="color: #333;">m1</span> <span class="n" style="color: #333;">aSet</span></span>
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<pre style="margin: 0;">+<span id="LC558" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use a non-deterministic fold here because deletion is</span></span>
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<pre style="margin: 0;">+<span id="LC559" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- commutative</span></span>
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<pre style="margin: 0;"> <span id="LC560" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC561" 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;">m</span></span>
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<pre style="margin: 0;"> <span id="LC562" class="line" lang="haskell"></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5006a7e1088511af71ef009debcbf97bb7e801a4#91648438362e5a35363d2bb7abb04016dedd7d7e"><strong>compiler/GHC/Core/FamInstEnv.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">@@ -380,8 +380,8 @@ famInstEnvElts fi = [elt | FamIE elts <- eltsUDFM fi, elt <- elts]</td>
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<pre style="margin: 0;"> <span id="LC380" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [FamInstEnv determinism]</span></span>
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<pre style="margin: 0;"> <span id="LC381" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC382" class="line" lang="haskell"><span class="n" style="color: #333;">famInstEnvSize</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">FamInstEnv</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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<pre style="margin: 0;">-<span id="LC383" class="line" lang="haskell"><span class="n" style="color: #333;">famInstEnvSize</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetFoldUDFM</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">FamIE</span> <span class="n" style="color: #333;">elt</span><span class="p">)</span> <span class="n" style="color: #333;">sum</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">sum</span> <span class="o" style="font-weight: 600;">+</span> <span class="n" style="color: #333;">length</span> <span class="n" style="color: #333;">elt</span><span class="p">)</span> <span class="mi" style="color: #099;">0</span></span>
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<pre style="margin: 0;">-<span id="LC384" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use nonDetFoldUDFM here since we're just computing the</span></span>
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<pre style="margin: 0;">+<span id="LC383" class="line" lang="haskell"><span class="n" style="color: #333;">famInstEnvSize</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDet<span class="idiff left right">Strict</span>FoldUDFM</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">FamIE</span> <span class="n" style="color: #333;">elt</span><span class="p">)</span> <span class="n" style="color: #333;">sum</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">sum</span> <span class="o" style="font-weight: 600;">+</span> <span class="n" style="color: #333;">length</span> <span class="n" style="color: #333;">elt</span><span class="p">)</span> <span class="mi" style="color: #099;">0</span></span>
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<pre style="margin: 0;">+<span id="LC384" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use nonDet<span class="idiff left right">Strict</span>FoldUDFM here since we're just computing the</span></span>
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<pre style="margin: 0;"> <span id="LC385" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- size.</span></span>
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<pre style="margin: 0;"> <span id="LC386" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC387" class="line" lang="haskell"><span class="n" style="color: #333;">familyInstances</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">FamInstEnv</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">FamInstEnv</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">FamInst</span><span class="p">]</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5006a7e1088511af71ef009debcbf97bb7e801a4#9e2ce77a946950b2d19d75c55f671c048a5645bd"><strong>compiler/GHC/Core/Op/OccurAnal.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2243,8 +2243,8 @@ extendFvs env s</td>
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<pre style="margin: 0;"> <span id="LC2243" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">s</span> <span class="p">`</span><span class="n" style="color: #333;">unionVarSet</span><span class="p">`</span> <span class="n" style="color: #333;">extras</span><span class="p">,</span> <span class="n" style="color: #333;">extras</span> <span class="p">`</span><span class="n" style="color: #333;">subVarSet</span><span class="p">`</span> <span class="n" style="color: #333;">s</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC2244" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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2245
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<pre style="margin: 0;"> <span id="LC2245" class="line" lang="haskell"> <span class="n" style="color: #333;">extras</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span> <span class="c1" style="color: #998; font-style: italic;">-- env(s)</span></span>
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<pre style="margin: 0;">-<span id="LC2246" class="line" lang="haskell"> <span class="n" style="color: #333;">extras</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetFoldUFM</span> <span class="n" style="color: #333;">unionVarSet</span> <span class="n" style="color: #333;">emptyVarSet</span> <span class="o" style="font-weight: 600;">$</span></span>
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2247
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<pre style="margin: 0;">-<span id="LC2247" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use nonDetFoldUFM here because unionVarSet commutes</span></span>
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<pre style="margin: 0;">+<span id="LC2246" class="line" lang="haskell"> <span class="n" style="color: #333;">extras</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDet<span class="idiff left right">Strict</span>FoldUFM</span> <span class="n" style="color: #333;">unionVarSet</span> <span class="n" style="color: #333;">emptyVarSet</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC2247" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use nonDet<span class="idiff left right">Strict</span>FoldUFM here because unionVarSet commutes</span></span>
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<pre style="margin: 0;"> <span id="LC2248" class="line" lang="haskell"> <span class="n" style="color: #333;">intersectUFM_C</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">x</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">x</span><span class="p">)</span> <span class="n" style="color: #333;">env</span> <span class="p">(</span><span class="n" style="color: #333;">getUniqSet</span> <span class="n" style="color: #333;">s</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC2249" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC2250" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{-</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">@@ -2565,8 +2565,8 @@ addManyOcc v u | isId v = addManyOccId u v</td>
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<pre style="margin: 0;"> <span id="LC2565" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- (Same goes for INLINE.)</span></span>
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<pre style="margin: 0;"> <span id="LC2566" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC2567" class="line" lang="haskell"><span class="n" style="color: #333;">addManyOccs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">UsageDetails</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UsageDetails</span></span>
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<pre style="margin: 0;">-<span id="LC2568" class="line" lang="haskell"><span class="n" style="color: #333;">addManyOccs</span> <span class="n" style="color: #333;">usage</span> <span class="n" style="color: #333;">id_set</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetFoldUniqSet</span> <span class="n" style="color: #333;">addManyOcc</span> <span class="n" style="color: #333;">usage</span> <span class="n" style="color: #333;">id_set</span></span>
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2569
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<pre style="margin: 0;">-<span id="LC2569" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use nonDet<span class="idiff left right">FoldUFM</span> here because addManyOcc commutes</span></span>
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<pre style="margin: 0;">+<span id="LC2568" class="line" lang="haskell"><span class="n" style="color: #333;">addManyOccs</span> <span class="n" style="color: #333;">usage</span> <span class="n" style="color: #333;">id_set</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDet<span class="idiff left right">Strict</span>FoldUniqSet</span> <span class="n" style="color: #333;">addManyOcc</span> <span class="n" style="color: #333;">usage</span> <span class="n" style="color: #333;">id_set</span></span>
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<pre style="margin: 0;">+<span id="LC2569" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use nonDet<span class="idiff left right">StrictFoldUniqSet</span> here because addManyOcc commutes</span></span>
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<pre style="margin: 0;"> <span id="LC2570" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC2571" class="line" lang="haskell"><span class="n" style="color: #333;">delDetails</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">UsageDetails</span> <span class="o" style="font-weight: 600;">-></span> <span class="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;">UsageDetails</span></span>
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<pre style="margin: 0;"> <span id="LC2572" class="line" lang="haskell"><span class="n" style="color: #333;">delDetails</span> <span class="n" style="color: #333;">ud</span> <span class="n" style="color: #333;">bndr</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5006a7e1088511af71ef009debcbf97bb7e801a4#de7d9d388885ce6e3a45a39fac6e2c36a7f94f69"><strong>compiler/GHC/Core/Op/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">@@ -83,7 +83,7 @@ import GHC.Types.Id</td>
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<pre style="margin: 0;"> <span id="LC83" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Id.Info</span></span>
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<pre style="margin: 0;"> <span id="LC84" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Var</span></span>
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<pre style="margin: 0;"> <span id="LC85" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Var.Set</span></span>
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<pre style="margin: 0;">-<span id="LC86" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.Set</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">nonDetFoldUniqSet</span> <span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC86" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.Set</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">nonDet<span class="idiff left right">Strict</span>FoldUniqSet</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC87" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.DSet</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">getUniqDSet</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC88" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Var.Env</span></span>
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<pre style="margin: 0;"> <span id="LC89" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Literal</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">litIsTrivial</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">@@ -1469,8 +1469,8 @@ isFunction (_, AnnLam b e) | isId b = True</td>
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<pre style="margin: 0;"> <span id="LC1469" class="line" lang="haskell"><span class="n" style="color: #333;">isFunction</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="LC1470" class="line" lang="haskell"></span>
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1471
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1471
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<pre style="margin: 0;"> <span id="LC1471" class="line" lang="haskell"><span class="n" style="color: #333;">countFreeIds</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">DVarSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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<pre style="margin: 0;">-<span id="LC1472" class="line" lang="haskell"><span class="n" style="color: #333;">countFreeIds</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetFoldUDFM</span> <span class="n" style="color: #333;">add</span> <span class="mi" style="color: #099;">0</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">getUniqDSet</span></span>
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<pre style="margin: 0;">-<span id="LC1473" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use nonDetFoldUDFM here because we're just counting things.</span></span>
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<pre style="margin: 0;">+<span id="LC1472" class="line" lang="haskell"><span class="n" style="color: #333;">countFreeIds</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDet<span class="idiff left right">Strict</span>FoldUDFM</span> <span class="n" style="color: #333;">add</span> <span class="mi" style="color: #099;">0</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">getUniqDSet</span></span>
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<pre style="margin: 0;">+<span id="LC1473" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use nonDet<span class="idiff left right">Strict</span>FoldUDFM here because we're just counting things.</span></span>
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<pre style="margin: 0;"> <span id="LC1474" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC1475" class="line" lang="haskell"> <span class="n" style="color: #333;">add</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;">Int</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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<pre style="margin: 0;"> <span id="LC1476" class="line" lang="haskell"> <span class="n" style="color: #333;">add</span> <span class="n" style="color: #333;">v</span> <span class="n" style="color: #333;">n</span> <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;">n</span><span class="o" style="font-weight: 600;">+</span><span class="mi" style="color: #099;">1</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">@@ -1581,12 +1581,14 @@ placeJoinCeiling le@(LE { le_ctxt_lvl = lvl })</td>
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<pre style="margin: 0;"> <span id="LC1581" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1582" class="line" lang="haskell"><span class="n" style="color: #333;">maxFvLevel</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Var</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">)</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;">DVarSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Level</span></span>
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<pre style="margin: 0;"> <span id="LC1583" class="line" lang="haskell"><span class="n" style="color: #333;">maxFvLevel</span> <span class="n" style="color: #333;">max_me</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">var_set</span></span>
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<pre style="margin: 0;">-<span id="LC1584" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldDVarSet</span> <span class="p">(</span><span class="n" style="color: #333;">maxIn</span> <span class="n" style="color: #333;">max_me</span> <span class="n" style="color: #333;">env</span><span class="p">)</span> <span class="n" style="color: #333;">tOP_LEVEL</span> <span class="n" style="color: #333;">var_set</span></span>
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<pre style="margin: 0;">+<span id="LC1584" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetStrictFoldDVarSet</span> <span class="p">(</span><span class="n" style="color: #333;">maxIn</span> <span class="n" style="color: #333;">max_me</span> <span class="n" style="color: #333;">env</span><span class="p">)</span> <span class="n" style="color: #333;">tOP_LEVEL</span> <span class="n" style="color: #333;">var_set</span></span>
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<pre style="margin: 0;">+<span id="LC1585" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use a non-deterministic fold here because maxIn commutes.</span></span>
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<pre style="margin: 0;"> <span id="LC1586" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1587" class="line" lang="haskell"><span class="n" style="color: #333;">maxFvLevel'</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Var</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">)</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;">TyCoVarSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Level</span></span>
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<pre style="margin: 0;"> <span id="LC1588" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Same but for TyCoVarSet</span></span>
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<pre style="margin: 0;"> <span id="LC1589" class="line" lang="haskell"><span class="n" style="color: #333;">maxFvLevel'</span> <span class="n" style="color: #333;">max_me</span> <span class="n" style="color: #333;">env</span> <span class="n" style="color: #333;">var_set</span></span>
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<pre style="margin: 0;">-<span id="LC1589" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetFoldUniqSet</span> <span class="p">(</span><span class="n" style="color: #333;">maxIn</span> <span class="n" style="color: #333;">max_me</span> <span class="n" style="color: #333;">env</span><span class="p">)</span> <span class="n" style="color: #333;">tOP_LEVEL</span> <span class="n" style="color: #333;">var_set</span></span>
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<pre style="margin: 0;">+<span id="LC1590" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetStrictFoldUniqSet</span> <span class="p">(</span><span class="n" style="color: #333;">maxIn</span> <span class="n" style="color: #333;">max_me</span> <span class="n" style="color: #333;">env</span><span class="p">)</span> <span class="n" style="color: #333;">tOP_LEVEL</span> <span class="n" style="color: #333;">var_set</span></span>
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<pre style="margin: 0;">+<span id="LC1591" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use a non-deterministic fold here because maxIn commutes.</span></span>
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<pre style="margin: 0;"> <span id="LC1592" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1593" class="line" lang="haskell"><span class="n" style="color: #333;">maxIn</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Var</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">)</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;">InVar</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Level</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Level</span></span>
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<pre style="margin: 0;"> <span id="LC1594" class="line" lang="haskell"><span class="n" style="color: #333;">maxIn</span> <span class="n" style="color: #333;">max_me</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LE</span> <span class="p">{</span> <span class="n" style="color: #333;">le_lvl_env</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">lvl_env</span><span class="p">,</span> <span class="n" style="color: #333;">le_env</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">id_env</span> <span class="p">})</span> <span class="n" style="color: #333;">in_var</span> <span class="n" style="color: #333;">lvl</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5006a7e1088511af71ef009debcbf97bb7e801a4#d52bc1e90d7432064a2998de2a2751b6fecb7680"><strong>compiler/GHC/Core/Op/Specialise.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">@@ -2177,8 +2177,8 @@ unionCallInfoSet (CIS f calls1) (CIS _ calls2) =</td>
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2177
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<pre style="margin: 0;"> <span id="LC2177" class="line" lang="haskell"></span>
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2178
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<pre style="margin: 0;"> <span id="LC2178" class="line" lang="haskell"><span class="n" style="color: #333;">callDetailsFVs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CallDetails</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span></span>
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2179
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2179
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<pre style="margin: 0;"> <span id="LC2179" class="line" lang="haskell"><span class="n" style="color: #333;">callDetailsFVs</span> <span class="n" style="color: #333;">calls</span> <span class="o" style="font-weight: 600;">=</span></span>
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2180
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<pre style="margin: 0;">-<span id="LC2180" class="line" lang="haskell"> <span class="n" style="color: #333;">nonDetFoldUDFM</span> <span class="p">(</span><span class="n" style="color: #333;">unionVarSet</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">callInfoFVs</span><span class="p">)</span> <span class="n" style="color: #333;">emptyVarSet</span> <span class="n" style="color: #333;">calls</span></span>
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2181
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<pre style="margin: 0;">-<span id="LC2181" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use nonDetFoldUDFM here because we forget the ordering</span></span>
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<pre style="margin: 0;">+<span id="LC2180" class="line" lang="haskell"> <span class="n" style="color: #333;">nonDet<span class="idiff left right">Strict</span>FoldUDFM</span> <span class="p">(</span><span class="n" style="color: #333;">unionVarSet</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">callInfoFVs</span><span class="p">)</span> <span class="n" style="color: #333;">emptyVarSet</span> <span class="n" style="color: #333;">calls</span></span>
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<pre style="margin: 0;">+<span id="LC2181" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use nonDet<span class="idiff left right">Strict</span>FoldUDFM here because we forget the ordering</span></span>
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<pre style="margin: 0;"> <span id="LC2182" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- immediately by converting to a nondeterministic set.</span></span>
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<pre style="margin: 0;"> <span id="LC2183" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC2184" class="line" lang="haskell"><span class="n" style="color: #333;">callInfoFVs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CallInfoSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5006a7e1088511af71ef009debcbf97bb7e801a4#039e8f5676356ef05c90af828aae48aac7296e47"><strong>compiler/GHC/Core/TyCo/FVs.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -441,7 +441,7 @@ deepCoVarFolder = TyCoFolder { tcf_view = noView</td>
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<pre style="margin: 0;"> <span id="LC441" class="line" lang="haskell"><span class="n" style="color: #333;">closeOverKinds</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyCoVarSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCoVarSet</span></span>
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<pre style="margin: 0;"> <span id="LC442" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- For each element of the input set,</span></span>
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<pre style="margin: 0;"> <span id="LC443" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- add the deep free variables of its kind</span></span>
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<pre style="margin: 0;">-<span id="LC444" class="line" lang="haskell"><span class="n" style="color: #333;">closeOverKinds</span> <span class="n" style="color: #333;">vs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetFoldVarSet</span> <span class="n" style="color: #333;">do_one</span> <span class="n" style="color: #333;">vs</span> <span class="n" style="color: #333;">vs</span></span>
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<pre style="margin: 0;">+<span id="LC444" class="line" lang="haskell"><span class="n" style="color: #333;">closeOverKinds</span> <span class="n" style="color: #333;">vs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDet<span class="idiff left right">Strict</span>FoldVarSet</span> <span class="n" style="color: #333;">do_one</span> <span class="n" style="color: #333;">vs</span> <span class="n" style="color: #333;">vs</span></span>
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<pre style="margin: 0;"> <span id="LC445" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC446" class="line" lang="haskell"> <span class="n" style="color: #333;">do_one</span> <span class="n" style="color: #333;">v</span> <span class="n" style="color: #333;">acc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">appEndo</span> <span class="p">(</span><span class="n" style="color: #333;">deep_ty</span> <span class="p">(</span><span class="n" style="color: #333;">varType</span> <span class="n" style="color: #333;">v</span><span class="p">))</span> <span class="n" style="color: #333;">acc</span></span>
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<pre style="margin: 0;"> <span id="LC447" class="line" lang="haskell"></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5006a7e1088511af71ef009debcbf97bb7e801a4#89a2e0e1a3095c7a42b10f2819049908908080e8"><strong>compiler/GHC/Core/Unify.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">@@ -658,9 +658,9 @@ niSubstTvSet :: TvSubstEnv -> TyCoVarSet -> TyCoVarSet</td>
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<pre style="margin: 0;"> <span id="LC658" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- remembering that the substitution isn't necessarily idempotent</span></span>
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<pre style="margin: 0;"> <span id="LC659" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- This is used in the occurs check, before extending the substitution</span></span>
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<pre style="margin: 0;"> <span id="LC660" class="line" lang="haskell"><span class="n" style="color: #333;">niSubstTvSet</span> <span class="n" style="color: #333;">tsubst</span> <span class="n" style="color: #333;">tvs</span></span>
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<pre style="margin: 0;">-<span id="LC661" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetFoldUniqSet</span> <span class="p">(</span><span class="n" style="color: #333;">unionVarSet</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">get</span><span class="p">)</span> <span class="n" style="color: #333;">emptyVarSet</span> <span class="n" style="color: #333;">tvs</span></span>
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<pre style="margin: 0;">-<span id="LC662" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to <span class="idiff left right">nonDetFoldUFM here because we immediately forget the</span></span></span>
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<pre style="margin: 0;">-<span id="LC663" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- ordering by creating a set.</span></span>
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<pre style="margin: 0;">+<span id="LC661" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDet<span class="idiff left right">Strict</span>FoldUniqSet</span> <span class="p">(</span><span class="n" style="color: #333;">unionVarSet</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">get</span><span class="p">)</span> <span class="n" style="color: #333;">emptyVarSet</span> <span class="n" style="color: #333;">tvs</span></span>
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<pre style="margin: 0;">+<span id="LC662" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to <span class="idiff left right">use a non-deterministic fold here because we immediately forget</span></span></span>
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<pre style="margin: 0;">+<span id="LC663" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- <span class="idiff left right">the </span>ordering by creating a set.</span></span>
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<pre style="margin: 0;"> <span id="LC664" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC665" class="line" lang="haskell"> <span class="n" style="color: #333;">get</span> <span class="n" style="color: #333;">tv</span></span>
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<pre style="margin: 0;"> <span id="LC666" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">lookupVarEnv</span> <span class="n" style="color: #333;">tsubst</span> <span class="n" style="color: #333;">tv</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5006a7e1088511af71ef009debcbf97bb7e801a4#74a7b3677ea9cb2138e0b682ce38fd67dbf57c14"><strong>compiler/GHC/HsToCore/Usage.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">@@ -260,9 +260,9 @@ mk_mod_usage_info pit hsc_env this_mod direct_imports used_names</td>
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<pre style="margin: 0;"> <span id="LC260" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- ent_map groups together all the things imported and used</span></span>
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<pre style="margin: 0;"> <span id="LC261" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- from a particular module</span></span>
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<pre style="margin: 0;"> <span id="LC262" class="line" lang="haskell"> <span class="n" style="color: #333;">ent_map</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">ModuleEnv</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">OccName</span><span class="p">]</span></span>
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<pre style="margin: 0;">-<span id="LC263" class="line" lang="haskell"> <span class="n" style="color: #333;">ent_map</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetFoldUniqSet</span> <span class="n" style="color: #333;">add_mv</span> <span class="n" style="color: #333;">emptyModuleEnv</span> <span class="n" style="color: #333;">used_names</span></span>
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<pre style="margin: 0;">-<span id="LC264" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- nonDet<span class="idiff left right">FoldUFM is OK here. If you follow the logic, we sort by OccName</span></span></span>
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<pre style="margin: 0;">-<span id="LC265" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- in ent_hashs</span></span>
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<pre style="margin: 0;">+<span id="LC263" class="line" lang="haskell"> <span class="n" style="color: #333;">ent_map</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDet<span class="idiff left right">Strict</span>FoldUniqSet</span> <span class="n" style="color: #333;">add_mv</span> <span class="n" style="color: #333;">emptyModuleEnv</span> <span class="n" style="color: #333;">used_names</span></span>
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<pre style="margin: 0;">+<span id="LC264" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- nonDet<span class="idiff left right">StrictFoldUniqSet is OK here. If you follow the logic, we sort by</span></span></span>
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<pre style="margin: 0;">+<span id="LC265" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- <span class="idiff left right">OccName </span>in ent_hashs</span></span>
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<pre style="margin: 0;"> <span id="LC266" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC267" class="line" lang="haskell"> <span class="n" style="color: #333;">add_mv</span> <span class="n" style="color: #333;">name</span> <span class="n" style="color: #333;">mv_map</span></span>
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<pre style="margin: 0;"> <span id="LC268" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isWiredInName</span> <span class="n" style="color: #333;">name</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mv_map</span> <span class="c1" style="color: #998; font-style: italic;">-- ignore wired-in names</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5006a7e1088511af71ef009debcbf97bb7e801a4#9e7e910f99e3a46d2caa3b0102d7481a88f80960"><strong>compiler/GHC/Rename/Source.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">@@ -1422,8 +1422,8 @@ depAnalTyClDecls rdr_env kisig_fv_env ds_w_fvs</td>
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<pre style="margin: 0;"> <span id="LC1422" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1423" class="line" lang="haskell"><span class="n" style="color: #333;">toParents</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">GlobalRdrEnv</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">NameSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">NameSet</span></span>
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<pre style="margin: 0;"> <span id="LC1424" class="line" lang="haskell"><span class="n" style="color: #333;">toParents</span> <span class="n" style="color: #333;">rdr_env</span> <span class="n" style="color: #333;">ns</span></span>
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<pre style="margin: 0;">-<span id="LC1425" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetFoldUniqSet</span> <span class="n" style="color: #333;">add</span> <span class="n" style="color: #333;">emptyNameSet</span> <span class="n" style="color: #333;">ns</span></span>
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<pre style="margin: 0;">-<span id="LC1426" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use <span class="idiff left right">nonDetFoldUFM</span> because we immediately forget the</span></span>
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<pre style="margin: 0;">+<span id="LC1425" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDet<span class="idiff left right">Strict</span>FoldUniqSet</span> <span class="n" style="color: #333;">add</span> <span class="n" style="color: #333;">emptyNameSet</span> <span class="n" style="color: #333;">ns</span></span>
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<pre style="margin: 0;">+<span id="LC1426" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use <span class="idiff left right">a non-deterministic fold</span> because we immediately forget the</span></span>
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<pre style="margin: 0;"> <span id="LC1427" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- ordering by creating a set</span></span>
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<pre style="margin: 0;"> <span id="LC1428" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC1429" class="line" lang="haskell"> <span class="n" style="color: #333;">add</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">extendNameSet</span> <span class="n" style="color: #333;">s</span> <span class="p">(</span><span class="n" style="color: #333;">getParent</span> <span class="n" style="color: #333;">rdr_env</span> <span class="n" style="color: #333;">n</span><span class="p">)</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5006a7e1088511af71ef009debcbf97bb7e801a4#657eec52eed3c8be846a0b60eb6088d5f465de8a"><strong>compiler/GHC/Stg/Lift/Analysis.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">@@ -545,7 +545,8 @@ closureGrowth expander sizer group abs_ids = go</td>
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<pre style="margin: 0;"> <span id="LC545" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- we lift @f@</span></span>
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<pre style="margin: 0;"> <span id="LC546" class="line" lang="haskell"> <span class="n" style="color: #333;">newbies</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">abs_ids</span> <span class="p">`</span><span class="n" style="color: #333;">minusDVarSet</span><span class="p">`</span> <span class="n" style="color: #333;">clo_fvs'</span></span>
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<pre style="margin: 0;"> <span id="LC547" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Lifting @f@ removes @f@ from the closure but adds all @newbies@</span></span>
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<pre style="margin: 0;">-<span id="LC548" class="line" lang="haskell"> <span class="n" style="color: #333;">cost</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldDVarSet</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">id</span> <span class="n" style="color: #333;">size</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">sizer</span> <span class="n" style="color: #333;">id</span> <span class="o" style="font-weight: 600;">+</span> <span class="n" style="color: #333;">size</span><span class="p">)</span> <span class="mi" style="color: #099;">0</span> <span class="n" style="color: #333;">newbies</span> <span class="o" style="font-weight: 600;">-</span> <span class="n" style="color: #333;">n_occs</span></span>
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<pre style="margin: 0;">+<span id="LC548" class="line" lang="haskell"> <span class="n" style="color: #333;">cost</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetStrictFoldDVarSet</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">id</span> <span class="n" style="color: #333;">size</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">sizer</span> <span class="n" style="color: #333;">id</span> <span class="o" style="font-weight: 600;">+</span> <span class="n" style="color: #333;">size</span><span class="p">)</span> <span class="mi" style="color: #099;">0</span> <span class="n" style="color: #333;">newbies</span> <span class="o" style="font-weight: 600;">-</span> <span class="n" style="color: #333;">n_occs</span></span>
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<pre style="margin: 0;">+<span id="LC549" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Using a non-deterministic fold is OK here because addition is commutative.</span></span>
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<pre style="margin: 0;"> <span id="LC550" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">RhsSk</span> <span class="n" style="color: #333;">body_dmd</span> <span class="n" style="color: #333;">body</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC551" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- The conservative assumption would be that</span></span>
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<pre style="margin: 0;"> <span id="LC552" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- 1. Every RHS with positive growth would be called multiple times,</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5006a7e1088511af71ef009debcbf97bb7e801a4#d09e98aae6ad2eb59d08eac7894b68c0ab820cda"><strong>compiler/GHC/Types/Demand.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -785,16 +785,23 @@ cleanUseDmd_maybe _ = Nothing</td>
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<pre style="margin: 0;"> <span id="LC785" class="line" lang="haskell"><span class="n" style="color: #333;">splitFVs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span> <span class="c1" style="color: #998; font-style: italic;">-- Thunk</span></span>
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<pre style="margin: 0;"> <span id="LC786" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DmdEnv</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">DmdEnv</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">DmdEnv</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC787" class="line" lang="haskell"><span class="n" style="color: #333;">splitFVs</span> <span class="n" style="color: #333;">is_thunk</span> <span class="n" style="color: #333;">rhs_fvs</span></span>
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<pre style="margin: 0;">-<span id="LC788" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">is_thunk</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetFoldUFM_Directly</span> <span class="n" style="color: #333;">add</span> <span class="p">(</span><span class="n" style="color: #333;">emptyVarEnv</span><span class="p">,</span> <span class="n" style="color: #333;">emptyVarEnv</span><span class="p">)</span> <span class="n" style="color: #333;">rhs_fvs</span></span>
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<pre style="margin: 0;">-<span id="LC789" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use nonDetFoldUFM_Directly because we</span></span>
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<pre style="margin: 0;">+<span id="LC788" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">is_thunk</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">strictPairToTuple</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC789" class="line" lang="haskell"> <span class="n" style="color: #333;">nonDetStrictFoldUFM_Directly</span> <span class="n" style="color: #333;">add</span> <span class="p">(</span><span class="n" style="color: #333;">emptyVarEnv</span> <span class="o" style="font-weight: 600;">:*:</span> <span class="n" style="color: #333;">emptyVarEnv</span><span class="p">)</span> <span class="n" style="color: #333;">rhs_fvs</span></span>
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<pre style="margin: 0;">+<span id="LC790" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use a non-deterministic fold because we</span></span>
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<pre style="margin: 0;"> <span id="LC791" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- immediately forget the ordering by putting the elements</span></span>
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<pre style="margin: 0;"> <span id="LC792" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- in the envs again</span></span>
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<pre style="margin: 0;"> <span id="LC793" 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;">partitionVarEnv</span> <span class="n" style="color: #333;">isWeakDmd</span> <span class="n" style="color: #333;">rhs_fvs</span></span>
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<pre style="margin: 0;"> <span id="LC794" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">-<span id="LC794" class="line" lang="haskell"> <span class="n" style="color: #333;">add</span> <span class="n" style="color: #333;">uniq</span> <span class="n" style="color: #333;">dmd</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">JD</span> <span class="p">{</span> <span class="n" style="color: #333;">sd</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">s</span><span class="p">,</span> <span class="n" style="color: #333;">ud</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">u</span> <span class="p">})</span> <span class="p">(</span><span class="n" style="color: #333;">lazy_fv</span><span class="p">,</span> <span class="n" style="color: #333;">sig_fv</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC795" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Lazy</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">addToUFM_Directly</span> <span class="n" style="color: #333;">lazy_fv</span> <span class="n" style="color: #333;">uniq</span> <span class="n" style="color: #333;">dmd</span><span class="p">,</span> <span class="n" style="color: #333;">sig_fv</span><span class="p">)</span></span>
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796
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<pre style="margin: 0;">-<span id="LC796" 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="p">(</span> <span class="n" style="color: #333;">addToUFM_Directly</span> <span class="n" style="color: #333;">lazy_fv</span> <span class="n" style="color: #333;">uniq</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">JD</span> <span class="p">{</span> <span class="n" style="color: #333;">sd</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Lazy</span><span class="p">,</span> <span class="n" style="color: #333;">ud</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">u</span> <span class="p">})</span></span>
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797
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<pre style="margin: 0;">-<span id="LC797" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">addToUFM_Directly</span> <span class="n" style="color: #333;">sig_fv</span> <span class="n" style="color: #333;">uniq</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">JD</span> <span class="p">{</span> <span class="n" style="color: #333;">sd</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">s</span><span class="p">,</span> <span class="n" style="color: #333;">ud</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Abs</span> <span class="p">})</span> <span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC795" class="line" lang="haskell"> <span class="n" style="color: #333;">add</span> <span class="n" style="color: #333;">uniq</span> <span class="n" style="color: #333;">dmd</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">JD</span> <span class="p">{</span> <span class="n" style="color: #333;">sd</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">s</span><span class="p">,</span> <span class="n" style="color: #333;">ud</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">u</span> <span class="p">})</span> <span class="p">(</span><span class="n" style="color: #333;">lazy_fv</span> <span class="o" style="font-weight: 600;">:*:</span> <span class="n" style="color: #333;">sig_fv</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC796" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Lazy</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addToUFM_Directly</span> <span class="n" style="color: #333;">lazy_fv</span> <span class="n" style="color: #333;">uniq</span> <span class="n" style="color: #333;">dmd</span> <span class="o" style="font-weight: 600;">:*:</span> <span class="n" style="color: #333;">sig_fv</span></span>
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<pre style="margin: 0;">+<span id="LC797" 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;">addToUFM_Directly</span> <span class="n" style="color: #333;">lazy_fv</span> <span class="n" style="color: #333;">uniq</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">JD</span> <span class="p">{</span> <span class="n" style="color: #333;">sd</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Lazy</span><span class="p">,</span> <span class="n" style="color: #333;">ud</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">u</span> <span class="p">})</span></span>
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<pre style="margin: 0;">+<span id="LC798" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">:*:</span></span>
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<pre style="margin: 0;">+<span id="LC799" class="line" lang="haskell"> <span class="n" style="color: #333;">addToUFM_Directly</span> <span class="n" style="color: #333;">sig_fv</span> <span class="n" style="color: #333;">uniq</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">JD</span> <span class="p">{</span> <span class="n" style="color: #333;">sd</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">s</span><span class="p">,</span> <span class="n" style="color: #333;">ud</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Abs</span> <span class="p">})</span></span>
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<pre style="margin: 0;">+<span id="LC800" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC801" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">StrictPair</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">=</span> <span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">:*:</span> <span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">b</span></span>
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802
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<pre style="margin: 0;">+<span id="LC802" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC803" class="line" lang="haskell"><span class="n" style="color: #333;">strictPairToTuple</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">StrictPair</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="n" style="color: #333;">b</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC804" class="line" lang="haskell"><span class="n" style="color: #333;">strictPairToTuple</span> <span class="p">(</span><span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">:*:</span> <span class="n" style="color: #333;">y</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">x</span><span class="p">,</span> <span class="n" style="color: #333;">y</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC805" class="line" lang="haskell"></span>
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806
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<pre style="margin: 0;"> <span id="LC806" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">TypeShape</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">TsFun</span> <span class="kt" style="color: #458; font-weight: 600;">TypeShape</span></span>
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807
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<pre style="margin: 0;"> <span id="LC807" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">TsProd</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TypeShape</span><span class="p">]</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5006a7e1088511af71ef009debcbf97bb7e801a4#266bc13b57ed8c43a461b6d9a429c917879e16b4"><strong>compiler/GHC/Types/Unique/DFM.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">@@ -50,14 +50,14 @@ module GHC.Types.Unique.DFM (</td>
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<pre style="margin: 0;"> <span id="LC50" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">equalKeysUDFM</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC51" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">minusUDFM</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC52" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">listToUDFM</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC53" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">udfmMinusUFM</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC53" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">udfmMinusUFM</span><span class="p">,</span><span class="idiff left"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff">ufmMinusUDFM</span></span><span class="p"><span class="idiff right">,</span></span></span>
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<pre style="margin: 0;"> <span id="LC54" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">partitionUDFM</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC55" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">anyUDFM</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">allUDFM</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC56" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">pprUniqDFM</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">pprUDFM</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC57" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC58" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">udfmToList</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC59" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">udfmToUfm</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC60" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">nonDetFoldUDFM</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC60" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">nonDet<span class="idiff left right">Strict</span>FoldUDFM</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC61" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">alwaysUnsafeUfmToUdfm</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC62" class="line" lang="haskell"> <span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC63" 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">@@ -72,7 +72,7 @@ import Data.Functor.Classes (Eq1 (..))</td>
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<pre style="margin: 0;"> <span id="LC72" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.List</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">sortBy</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC73" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Function</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">on</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC74" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="k" style="font-weight: 600;">qualified</span> <span class="nn" style="color: #555;">Data.Semigroup</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">Semi</span></span>
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<pre style="margin: 0;">-<span id="LC75" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.FM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UniqFM</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;"><span class="idiff left">listToUFM_Directly</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff">nonDetUFMToList</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff right">ufmToIntMap</span></span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC75" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.FM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UniqFM</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;"><span class="idiff left">nonDetUFMToList</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff">ufmToIntMap</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff right">unsafeIntMapToUFM</span></span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC76" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC77" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Note [Deterministic UniqFM]</span></span>
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<pre style="margin: 0;"> <span id="LC78" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~</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">@@ -272,12 +272,14 @@ elemUDFM k (UDFM m _i) = M.member (getKey $ getUnique k) m</td>
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<pre style="margin: 0;"> <span id="LC272" class="line" lang="haskell"><span class="n" style="color: #333;">foldUDFM</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">elt</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqDFM</span> <span class="n" style="color: #333;">elt</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="LC273" class="line" lang="haskell"><span class="n" style="color: #333;">foldUDFM</span> <span class="n" style="color: #333;">k</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldr</span> <span class="n" style="color: #333;">k</span> <span class="n" style="color: #333;">z</span> <span class="p">(</span><span class="n" style="color: #333;">eltsUDFM</span> <span class="n" style="color: #333;">m</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC274" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC275" class="line" lang="haskell"><span class="cd">-- | Performs a nondeterministic fold over the UniqDFM.</span></span>
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<pre style="margin: 0;">+<span id="LC275" class="line" lang="haskell"><span class="cd">-- | Performs a nondeterministic <span class="idiff left right">strict </span>fold over the UniqDFM.</span></span>
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<pre style="margin: 0;"> <span id="LC276" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- It's O(n), same as the corresponding function on `UniqFM`.</span></span>
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<pre style="margin: 0;"> <span id="LC277" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- If you use this please provide a justification why it doesn't introduce</span></span>
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<pre style="margin: 0;"> <span id="LC278" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- nondeterminism.</span></span>
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<pre style="margin: 0;">-<span id="LC279" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetFoldUDFM</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">elt</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqDFM</span> <span class="n" style="color: #333;">elt</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="LC280" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetFoldUDFM</span> <span class="n" style="color: #333;">k</span> <span class="n" style="color: #333;">z</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UDFM</span> <span class="n" style="color: #333;">m</span> <span class="n" style="color: #333;">_i</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldr</span> <span class="n" style="color: #333;">k</span> <span class="n" style="color: #333;">z</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">taggedFst</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">M</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">elems</span> <span class="n" style="color: #333;">m</span></span>
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<pre style="margin: 0;">+<span id="LC279" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetStrictFoldUDFM</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">elt</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqDFM</span> <span class="n" style="color: #333;">elt</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="LC280" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetStrictFoldUDFM</span> <span class="n" style="color: #333;">k</span> <span class="n" style="color: #333;">z</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UDFM</span> <span class="n" style="color: #333;">m</span> <span class="n" style="color: #333;">_i</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldl'</span> <span class="n" style="color: #333;">k'</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">m</span></span>
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<pre style="margin: 0;">+<span id="LC281" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC282" class="line" lang="haskell"> <span class="n" style="color: #333;">k'</span> <span class="n" style="color: #333;">acc</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TaggedVal</span> <span class="n" style="color: #333;">v</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;">k</span> <span class="n" style="color: #333;">v</span> <span class="n" style="color: #333;">acc</span></span>
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<pre style="margin: 0;"> <span id="LC283" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC284" class="line" lang="haskell"><span class="n" style="color: #333;">eltsUDFM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">UniqDFM</span> <span class="n" style="color: #333;">elt</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="n" style="color: #333;">elt</span><span class="p">]</span></span>
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<pre style="margin: 0;"> <span id="LC285" class="line" lang="haskell"><span class="n" style="color: #333;">eltsUDFM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UDFM</span> <span class="n" style="color: #333;">m</span> <span class="n" style="color: #333;">_i</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -337,6 +339,9 @@ udfmMinusUFM (UDFM x i) y = UDFM (M.difference x (ufmToIntMap y)) i</td>
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<pre style="margin: 0;"> <span id="LC339" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- M.difference returns a subset of a left set, so `i` is a good upper</span></span>
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<pre style="margin: 0;"> <span id="LC340" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- bound.</span></span>
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<pre style="margin: 0;"> <span id="LC341" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC342" class="line" lang="haskell"><span class="n" style="color: #333;">ufmMinusUDFM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">UniqFM</span> <span class="n" style="color: #333;">elt1</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqDFM</span> <span class="n" style="color: #333;">elt2</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqFM</span> <span class="n" style="color: #333;">elt1</span></span>
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<pre style="margin: 0;">+<span id="LC343" class="line" lang="haskell"><span class="n" style="color: #333;">ufmMinusUDFM</span> <span class="n" style="color: #333;">x</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UDFM</span> <span class="n" style="color: #333;">y</span> <span class="n" style="color: #333;">_i</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">unsafeIntMapToUFM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">M</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">difference</span> <span class="p">(</span><span class="n" style="color: #333;">ufmToIntMap</span> <span class="n" style="color: #333;">x</span><span class="p">)</span> <span class="n" style="color: #333;">y</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC344" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC345" class="line" lang="haskell"><span class="cd">-- | Partition UniqDFM into two UniqDFMs according to the predicate</span></span>
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<pre style="margin: 0;"> <span id="LC346" class="line" lang="haskell"><span class="n" style="color: #333;">partitionUDFM</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">elt</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqDFM</span> <span class="n" style="color: #333;">elt</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UniqDFM</span> <span class="n" style="color: #333;">elt</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">UniqDFM</span> <span class="n" style="color: #333;">elt</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC347" class="line" lang="haskell"><span class="n" style="color: #333;">partitionUDFM</span> <span class="n" style="color: #333;">p</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UDFM</span> <span class="n" style="color: #333;">m</span> <span class="n" style="color: #333;">i</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -349,8 +354,7 @@ delListFromUDFM = foldl' delFromUDFM</td>
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<pre style="margin: 0;"> <span id="LC354" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC355" class="line" lang="haskell"><span class="cd">-- | This allows for lossy conversion from UniqDFM to UniqFM</span></span>
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<pre style="margin: 0;"> <span id="LC356" class="line" lang="haskell"><span class="n" style="color: #333;">udfmToUfm</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">UniqDFM</span> <span class="n" style="color: #333;">elt</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqFM</span> <span class="n" style="color: #333;">elt</span></span>
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<pre style="margin: 0;">-<span id="LC352" class="line" lang="haskell"><span class="n" style="color: #333;">udfmToUfm</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UDFM</span> <span class="n" style="color: #333;">m</span> <span class="n" style="color: #333;">_i</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span></span>
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<pre style="margin: 0;">-<span id="LC353" class="line" lang="haskell"> <span class="n" style="color: #333;">listToUFM_Directly</span> <span class="p">[(</span><span class="n" style="color: #333;">getUnique</span> <span class="n" style="color: #333;">k</span><span class="p">,</span> <span class="n" style="color: #333;">taggedFst</span> <span class="n" style="color: #333;">tv</span><span class="p">)</span> <span class="o" style="font-weight: 600;">|</span> <span class="p">(</span><span class="n" style="color: #333;">k</span><span class="p">,</span> <span class="n" style="color: #333;">tv</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="kt" style="color: #458; font-weight: 600;">M</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">toList</span> <span class="n" style="color: #333;">m</span><span class="p">]</span></span>
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<pre style="margin: 0;">+<span id="LC357" class="line" lang="haskell"><span class="n" style="color: #333;">udfmToUfm</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UDFM</span> <span class="n" style="color: #333;">m</span> <span class="n" style="color: #333;">_i</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">unsafeIntMapToUFM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">M</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">taggedFst</span> <span class="n" style="color: #333;">m</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC358" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC359" class="line" lang="haskell"><span class="n" style="color: #333;">listToUDFM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Uniquable</span> <span class="n" style="color: #333;">key</span> <span class="o" style="font-weight: 600;">=></span> <span class="p">[(</span><span class="n" style="color: #333;">key</span><span class="p">,</span><span class="n" style="color: #333;">elt</span><span class="p">)]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqDFM</span> <span class="n" style="color: #333;">elt</span></span>
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<pre style="margin: 0;"> <span id="LC360" class="line" lang="haskell"><span class="n" style="color: #333;">listToUDFM</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldl'</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</span><span class="n" style="color: #333;">m</span> <span class="p">(</span><span class="n" style="color: #333;">k</span><span class="p">,</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;">addToUDFM</span> <span class="n" style="color: #333;">m</span> <span class="n" style="color: #333;">k</span> <span class="n" style="color: #333;">v</span><span class="p">)</span> <span class="n" style="color: #333;">emptyUDFM</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5006a7e1088511af71ef009debcbf97bb7e801a4#dd1734ed93e4694f773dd468a1855524e6bbca0f"><strong>compiler/GHC/Types/Unique/DSet.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">@@ -26,7 +26,7 @@ module GHC.Types.Unique.DSet (</td>
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<pre style="margin: 0;"> <span id="LC26" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">unionUniqDSets</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">unionManyUniqDSets</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC27" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">minusUniqDSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">uniqDSetMinusUniqSet</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC28" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">intersectUniqDSets</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">uniqDSetIntersectUniqSet</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;"><span class="idiff left right">f</span>oldUniqDSet</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;"><span class="idiff left right">nonDetStrictF</span>oldUniqDSet</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC30" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">elementOfUniqDSet</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC31" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">filterUniqDSet</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;">sizeUniqDSet</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">@@ -98,8 +98,11 @@ uniqDSetIntersectUniqSet :: UniqDSet a -> UniqSet b -> UniqDSet a</td>
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<pre style="margin: 0;"> <span id="LC98" class="line" lang="haskell"><span class="n" style="color: #333;">uniqDSetIntersectUniqSet</span> <span class="n" style="color: #333;">xs</span> <span class="n" style="color: #333;">ys</span></span>
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<pre style="margin: 0;"> <span id="LC99" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">UniqDSet</span> <span class="p">(</span><span class="n" style="color: #333;">udfmIntersectUFM</span> <span class="p">(</span><span class="n" style="color: #333;">getUniqDSet</span> <span class="n" style="color: #333;">xs</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">getUniqSet</span> <span class="n" style="color: #333;">ys</span><span class="p">))</span></span>
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<pre style="margin: 0;"> <span id="LC100" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC101" class="line" lang="haskell"><span class="n" style="color: #333;">foldUniqDSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">b</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqDSet</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">b</span></span>
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<pre style="margin: 0;">-<span id="LC102" class="line" lang="haskell"><span class="n" style="color: #333;">foldUniqDSet</span> <span class="n" style="color: #333;">c</span> <span class="n" style="color: #333;">n</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UniqDSet</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldUDFM</span> <span class="n" style="color: #333;">c</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">s</span></span>
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<pre style="margin: 0;">+<span id="LC101" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Deterministic UniqFM] to learn about nondeterminism.</span></span>
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<pre style="margin: 0;">+<span id="LC102" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- If you use this please provide a justification why it doesn't introduce</span></span>
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<pre style="margin: 0;">+<span id="LC103" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- nondeterminism.</span></span>
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<pre style="margin: 0;">+<span id="LC104" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetStrictFoldUniqDSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">b</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqDSet</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">b</span></span>
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<pre style="margin: 0;">+<span id="LC105" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetStrictFoldUniqDSet</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">acc</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UniqDSet</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetStrictFoldUDFM</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">acc</span> <span class="n" style="color: #333;">s</span></span>
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103
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106
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<pre style="margin: 0;"> <span id="LC106" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC107" class="line" lang="haskell"><span class="n" style="color: #333;">elementOfUniqDSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Uniquable</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqDSet</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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105
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108
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<pre style="margin: 0;"> <span id="LC108" class="line" lang="haskell"><span class="n" style="color: #333;">elementOfUniqDSet</span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">elemUDFM</span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">getUniqDSet</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5006a7e1088511af71ef009debcbf97bb7e801a4#b0b25f424f682f899323d3f74070dbe8fd59628e"><strong>compiler/GHC/Types/Unique/FM.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">@@ -56,7 +56,7 @@ module GHC.Types.Unique.FM (</td>
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<pre style="margin: 0;"> <span id="LC56" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">intersectUFM_C</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="nf" style="color: #900; font-weight: 600;">disjointUFM</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC58" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">equalKeysUFM</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC59" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">nonDet<span class="idiff left">FoldUFM</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff">foldUFM</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff right">nonDe</span>tFoldUFM_Directly</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC59" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">nonDet<span class="idiff left">StrictFoldUFM</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff">foldUFM</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff right">nonDetStric</span>tFoldUFM_Directly</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC60" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">anyUFM</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">allUFM</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">seqEltsUFM</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC61" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">mapUFM</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">mapUFM_Directly</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC62" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">elemUFM</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">elemUFM_Directly</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">@@ -67,7 +67,7 @@ module GHC.Types.Unique.FM (</td>
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<pre style="margin: 0;"> <span id="LC67" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">lookupWithDefaultUFM</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">lookupWithDefaultUFM_Directly</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC68" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">nonDetEltsUFM</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">eltsUFM</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">nonDetKeysUFM</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC69" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">ufmToSet_Directly</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC70" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">nonDetUFMToList</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">ufmToIntMap</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC70" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">nonDetUFMToList</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">ufmToIntMap</span><span class="p">,</span><span class="idiff left"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff">unsafeIntMapToUFM</span></span><span class="p"><span class="idiff right">,</span></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;">pprUniqFM</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">pprUFM</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">pprUFMWithKeys</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">pluralUFM</span></span>
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<pre style="margin: 0;"> <span id="LC72" class="line" lang="haskell"> <span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC73" 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">@@ -318,14 +318,14 @@ nonDetKeysUFM (UFM m) = map getUnique $ M.keys m</td>
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<pre style="margin: 0;"> <span id="LC318" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Deterministic UniqFM] to learn about nondeterminism.</span></span>
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<pre style="margin: 0;"> <span id="LC319" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- If you use this please provide a justification why it doesn't introduce</span></span>
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<pre style="margin: 0;"> <span id="LC320" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- nondeterminism.</span></span>
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<pre style="margin: 0;">-<span id="LC321" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetFoldUFM</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">elt</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqFM</span> <span class="n" style="color: #333;">elt</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="LC322" class="line" lang="haskell"><span class="n" style="color: #333;">nonDet<span class="idiff left">FoldUFM</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">k</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">z</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">UFM</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">m</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="kt" style="color: #458; font-weight: 600;"><span class="idiff">M</span></span><span class="o" style="font-weight: 600;"><span class="idiff">.</span></span><span class="n" style="color: #333;"><span class="idiff">foldr</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">k</span></span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">m</span></span>
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<pre style="margin: 0;">+<span id="LC321" class="line" lang="haskell"><span class="n" style="color: #333;">nonDet<span class="idiff left right">Strict</span>FoldUFM</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">elt</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqFM</span> <span class="n" style="color: #333;">elt</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="LC322" class="line" lang="haskell"><span class="n" style="color: #333;">nonDet<span class="idiff left">StrictFoldUFM</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">k</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">z</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">UFM</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">m</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="kt" style="color: #458; font-weight: 600;"><span class="idiff">M</span></span><span class="o" style="font-weight: 600;"><span class="idiff">.</span></span><span class="n" style="color: #333;"><span class="idiff">foldl'</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">flip</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">k</span></span><span class="p"><span class="idiff right">)</span></span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">m</span></span>
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<pre style="margin: 0;"> <span id="LC323" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC324" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Deterministic UniqFM] to learn about nondeterminism.</span></span>
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<pre style="margin: 0;"> <span id="LC325" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- If you use this please provide a justification why it doesn't introduce</span></span>
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<pre style="margin: 0;"> <span id="LC326" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- nondeterminism.</span></span>
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<pre style="margin: 0;">-<span id="LC327" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetFoldUFM_Directly</span><span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Unique</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">elt</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqFM</span> <span class="n" style="color: #333;">elt</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="LC328" class="line" lang="haskell"><span class="n" style="color: #333;">nonDet<span class="idiff left">FoldUFM_Directly</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">k</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">z</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">UFM</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">m</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="kt" style="color: #458; font-weight: 600;"><span class="idiff">M</span></span><span class="o" style="font-weight: 600;"><span class="idiff">.</span></span><span class="n" style="color: #333;"><span class="idiff">foldrWithKey</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">k</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">.</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">getUnique</span></span><span class="p">)</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">m</span></span>
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<pre style="margin: 0;">+<span id="LC327" class="line" lang="haskell"><span class="n" style="color: #333;">nonDet<span class="idiff left right">Strict</span>FoldUFM_Directly</span><span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Unique</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">elt</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqFM</span> <span class="n" style="color: #333;">elt</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="LC328" class="line" lang="haskell"><span class="n" style="color: #333;">nonDet<span class="idiff left">StrictFoldUFM_Directly</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">k</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">z</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">UFM</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">m</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="kt" style="color: #458; font-weight: 600;"><span class="idiff">M</span></span><span class="o" style="font-weight: 600;"><span class="idiff">.</span></span><span class="n" style="color: #333;"><span class="idiff">foldlWithKey'</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff">\</span></span><span class="n" style="color: #333;"><span class="idiff">z'</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">i</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">x</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">k</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">getUnique</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">i</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">x</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">z'</span></span><span class="p">)</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">m</span></span>
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<pre style="margin: 0;"> <span id="LC329" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC330" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Deterministic UniqFM] to learn about nondeterminism.</span></span>
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<pre style="margin: 0;"> <span id="LC331" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- If you use this please provide a justification why it doesn't introduce</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">@@ -359,6 +359,9 @@ instance Traversable NonDetUniqFM where</td>
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<pre style="margin: 0;"> <span id="LC359" class="line" lang="haskell"><span class="n" style="color: #333;">ufmToIntMap</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">UniqFM</span> <span class="n" style="color: #333;">elt</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">M</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">IntMap</span> <span class="n" style="color: #333;">elt</span></span>
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<pre style="margin: 0;"> <span id="LC360" class="line" lang="haskell"><span class="n" style="color: #333;">ufmToIntMap</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UFM</span> <span class="n" style="color: #333;">m</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">m</span></span>
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<pre style="margin: 0;"> <span id="LC361" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC362" class="line" lang="haskell"><span class="n" style="color: #333;">unsafeIntMapToUFM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">M</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">IntMap</span> <span class="n" style="color: #333;">elt</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqFM</span> <span class="n" style="color: #333;">elt</span></span>
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<pre style="margin: 0;">+<span id="LC363" class="line" lang="haskell"><span class="n" style="color: #333;">unsafeIntMapToUFM</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">UFM</span></span>
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<pre style="margin: 0;">+<span id="LC364" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC365" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Determines whether two 'UniqFM's contain the same keys.</span></span>
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<pre style="margin: 0;"> <span id="LC366" class="line" lang="haskell"><span class="n" style="color: #333;">equalKeysUFM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">UniqFM</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqFM</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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<pre style="margin: 0;"> <span id="LC367" class="line" lang="haskell"><span class="n" style="color: #333;">equalKeysUFM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UFM</span> <span class="n" style="color: #333;">m1</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UFM</span> <span class="n" style="color: #333;">m2</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">liftEq</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">\</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;">True</span><span class="p">)</span> <span class="n" style="color: #333;">m1</span> <span class="n" style="color: #333;">m2</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5006a7e1088511af71ef009debcbf97bb7e801a4#71ee8226465c3f394f18d0bddd00077942947740"><strong>compiler/GHC/Types/Unique/Set.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">@@ -25,7 +25,7 @@ module GHC.Types.Unique.Set (</td>
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<pre style="margin: 0;"> <span id="LC25" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">delOneFromUniqSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">delOneFromUniqSet_Directly</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">delListFromUniqSet</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC26" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">delListFromUniqSet_Directly</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC27" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">unionUniqSets</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">unionManyUniqSets</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC28" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">minusUniqSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">uniqSetMinusUFM</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC28" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">minusUniqSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">uniqSetMinusUFM</span><span class="p">,</span><span class="idiff left"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff">uniqSetMinusUDFM</span></span><span class="p"><span class="idiff right">,</span></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;">intersectUniqSets</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC30" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">restrictUniqSetToUFM</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC31" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">uniqSetAny</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">uniqSetAll</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">@@ -42,12 +42,12 @@ module GHC.Types.Unique.Set (</td>
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<pre style="margin: 0;"> <span id="LC42" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">unsafeUFMToUniqSet</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC43" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">nonDetEltsUniqSet</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC44" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">nonDetKeysUniqSet</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC45" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">nonDetFoldUniqSet</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC46" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">nonDetFoldUniqSet_Directly</span></span>
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<pre style="margin: 0;">+<span id="LC45" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">nonDetStrictFoldUniqSet</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC46" class="line" lang="haskell"> <span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC47" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC48" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GhcPrelude</span></span>
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<pre style="margin: 0;"> <span id="LC49" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC50" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.DFM</span></span>
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<pre style="margin: 0;"> <span id="LC51" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.FM</span></span>
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<pre style="margin: 0;"> <span id="LC52" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique</span></span>
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<pre style="margin: 0;"> <span id="LC53" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Coerce</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">@@ -111,6 +111,9 @@ restrictUniqSetToUFM (UniqSet s) m = UniqSet (intersectUFM s m)</td>
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<pre style="margin: 0;"> <span id="LC111" class="line" lang="haskell"><span class="n" style="color: #333;">uniqSetMinusUFM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">UniqSet</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqFM</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqSet</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;"> <span id="LC112" class="line" lang="haskell"><span class="n" style="color: #333;">uniqSetMinusUFM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UniqSet</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="n" style="color: #333;">t</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">UniqSet</span> <span class="p">(</span><span class="n" style="color: #333;">minusUFM</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">t</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC113" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC114" class="line" lang="haskell"><span class="n" style="color: #333;">uniqSetMinusUDFM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">UniqSet</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqDFM</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqSet</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">+<span id="LC115" class="line" lang="haskell"><span class="n" style="color: #333;">uniqSetMinusUDFM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UniqSet</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="n" style="color: #333;">t</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">UniqSet</span> <span class="p">(</span><span class="n" style="color: #333;">ufmMinusUDFM</span> <span class="n" style="color: #333;">s</span> <span class="n" style="color: #333;">t</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC116" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC117" class="line" lang="haskell"><span class="n" style="color: #333;">elementOfUniqSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Uniquable</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqSet</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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<pre style="margin: 0;"> <span id="LC118" class="line" lang="haskell"><span class="n" style="color: #333;">elementOfUniqSet</span> <span class="n" style="color: #333;">a</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UniqSet</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">elemUFM</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">s</span></span>
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<pre style="margin: 0;"> <span id="LC119" 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">@@ -159,14 +162,8 @@ nonDetKeysUniqSet = nonDetKeysUFM . getUniqSet'</td>
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<pre style="margin: 0;"> <span id="LC162" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Deterministic UniqFM] to learn about nondeterminism.</span></span>
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<pre style="margin: 0;"> <span id="LC163" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- If you use this please provide a justification why it doesn't introduce</span></span>
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<pre style="margin: 0;"> <span id="LC164" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- nondeterminism.</span></span>
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<pre style="margin: 0;">-<span id="LC162" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetFoldUniqSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">elt</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqSet</span> <span class="n" style="color: #333;">elt</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="LC163" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetFoldUniqSet</span> <span class="n" style="color: #333;">c</span> <span class="n" style="color: #333;">n</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UniqSet</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetFoldUFM</span> <span class="n" style="color: #333;">c</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">s</span></span>
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<pre style="margin: 0;">-<span id="LC164" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC165" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Deterministic UniqFM] to learn about nondeterminism.</span></span>
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<pre style="margin: 0;">-<span id="LC166" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- If you use this please provide a justification why it doesn't introduce</span></span>
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<pre style="margin: 0;">-<span id="LC167" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- nondeterminism.</span></span>
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<pre style="margin: 0;">-<span id="LC168" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetFoldUniqSet_Directly</span><span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Unique</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">elt</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqSet</span> <span class="n" style="color: #333;">elt</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="LC169" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetFoldUniqSet_Directly</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">n</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UniqSet</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetFoldUFM_Directly</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">s</span></span>
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<pre style="margin: 0;">+<span id="LC165" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetStrictFoldUniqSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">elt</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqSet</span> <span class="n" style="color: #333;">elt</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="LC166" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetStrictFoldUniqSet</span> <span class="n" style="color: #333;">c</span> <span class="n" style="color: #333;">n</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">UniqSet</span> <span class="n" style="color: #333;">s</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetStrictFoldUFM</span> <span class="n" style="color: #333;">c</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">s</span></span>
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<pre style="margin: 0;"> <span id="LC167" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC168" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [UniqSet invariant]</span></span>
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<pre style="margin: 0;"> <span id="LC169" class="line" lang="haskell"><span class="n" style="color: #333;">mapUniqSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Uniquable</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">=></span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">b</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqSet</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqSet</span> <span class="n" style="color: #333;">b</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5006a7e1088511af71ef009debcbf97bb7e801a4#07e36027465263e8b90313979f12e1f4a9ce64a5"><strong>compiler/GHC/Types/Var/Env.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">@@ -33,7 +33,7 @@ module GHC.Types.Var.Env (</td>
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<pre style="margin: 0;"> <span id="LC33" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">extendDVarEnv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">extendDVarEnv_C</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;">extendDVarEnvList</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;">lookupDVarEnv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">elemDVarEnv</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC36" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">isEmptyDVarEnv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">foldDVarEnv</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC36" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">isEmptyDVarEnv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">foldDVarEnv</span><span class="p">,</span><span class="idiff left"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff">nonDetStrictFoldDVarEnv</span></span><span class="p"><span class="idiff right">,</span></span></span>
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<pre style="margin: 0;"> <span id="LC37" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">mapDVarEnv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">filterDVarEnv</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC38" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">modifyDVarEnv</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC39" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">alterDVarEnv</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">@@ -583,6 +583,12 @@ lookupDVarEnv = lookupUDFM</td>
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583
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<pre style="margin: 0;"> <span id="LC583" class="line" lang="haskell"><span class="n" style="color: #333;">foldDVarEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">b</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DVarEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">b</span></span>
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584
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<pre style="margin: 0;"> <span id="LC584" class="line" lang="haskell"><span class="n" style="color: #333;">foldDVarEnv</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldUDFM</span></span>
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585
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<pre style="margin: 0;"> <span id="LC585" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC586" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Deterministic UniqFM] to learn about nondeterminism.</span></span>
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<pre style="margin: 0;">+<span id="LC587" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- If you use this please provide a justification why it doesn't introduce</span></span>
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<pre style="margin: 0;">+<span id="LC588" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- nondeterminism.</span></span>
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<pre style="margin: 0;">+<span id="LC589" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetStrictFoldDVarEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">b</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DVarEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">b</span></span>
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<pre style="margin: 0;">+<span id="LC590" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetStrictFoldDVarEnv</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetStrictFoldUDFM</span></span>
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<pre style="margin: 0;">+<span id="LC591" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC592" class="line" lang="haskell"><span class="n" style="color: #333;">mapDVarEnv</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">b</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DVarEnv</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DVarEnv</span> <span class="n" style="color: #333;">b</span></span>
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<pre style="margin: 0;"> <span id="LC593" class="line" lang="haskell"><span class="n" style="color: #333;">mapDVarEnv</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mapUDFM</span></span>
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<pre style="margin: 0;"> <span id="LC594" class="line" lang="haskell"></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5006a7e1088511af71ef009debcbf97bb7e801a4#8fa3c53ff1558af938c045405b5e177c50e91308"><strong>compiler/GHC/Types/Var/Set.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">@@ -23,7 +23,7 @@ module GHC.Types.Var.Set (</td>
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<pre style="margin: 0;"> <span id="LC23" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">sizeVarSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">seqVarSet</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;">elemVarSetByKey</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">partitionVarSet</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC25" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">pluralVarSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">pprVarSet</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC26" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">nonDetFoldVarSet</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC26" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">nonDet<span class="idiff left right">Strict</span>FoldVarSet</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC27" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC28" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- * Deterministic Var set types</span></span>
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<pre style="margin: 0;"> <span id="LC29" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">DVarSet</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">DIdSet</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">DTyVarSet</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">DTyCoVarSet</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">@@ -36,7 +36,9 @@ module GHC.Types.Var.Set (</td>
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<pre style="margin: 0;"> <span id="LC36" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">intersectDVarSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">dVarSetIntersectVarSet</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC37" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">intersectsDVarSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">disjointDVarSet</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC38" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">isEmptyDVarSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">delDVarSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">delDVarSetList</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC39" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">minusDVarSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">foldDVarSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">filterDVarSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">mapDVarSet</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC39" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">minusDVarSet</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC40" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">nonDetStrictFoldDVarSet</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC41" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">filterDVarSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">mapDVarSet</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC42" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">dVarSetMinusVarSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">anyDVarSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">allDVarSet</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC43" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">transCloDVarSet</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC44" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">sizeDVarSet</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">seqDVarSet</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">@@ -152,8 +154,11 @@ allVarSet = uniqSetAll</td>
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<pre style="margin: 0;"> <span id="LC154" class="line" lang="haskell"><span class="n" style="color: #333;">mapVarSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Uniquable</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">=></span> <span class="p">(</span><span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">b</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqSet</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">UniqSet</span> <span class="n" style="color: #333;">b</span></span>
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<pre style="margin: 0;"> <span id="LC155" class="line" lang="haskell"><span class="n" style="color: #333;">mapVarSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mapUniqSet</span></span>
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<pre style="margin: 0;"> <span id="LC156" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC155" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetFoldVarSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Var</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></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;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">-<span id="LC156" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetFoldVarSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetFoldUniqSet</span></span>
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<pre style="margin: 0;">+<span id="LC157" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Deterministic UniqFM] to learn about nondeterminism.</span></span>
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<pre style="margin: 0;">+<span id="LC158" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- If you use this please provide a justification why it doesn't introduce</span></span>
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<pre style="margin: 0;">+<span id="LC159" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- nondeterminism.</span></span>
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<pre style="margin: 0;">+<span id="LC160" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetStrictFoldVarSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Var</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></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;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">+<span id="LC161" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetStrictFoldVarSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetStrictFoldUniqSet</span></span>
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<pre style="margin: 0;"> <span id="LC162" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC163" class="line" lang="haskell"><span class="n" style="color: #333;">fixVarSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">VarSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- Map the current set to a new set</span></span>
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<pre style="margin: 0;"> <span id="LC164" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -290,8 +295,11 @@ minusDVarSet = minusUniqDSet</td>
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<pre style="margin: 0;"> <span id="LC295" class="line" lang="haskell"><span class="n" style="color: #333;">dVarSetMinusVarSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">DVarSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DVarSet</span></span>
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<pre style="margin: 0;"> <span id="LC296" class="line" lang="haskell"><span class="n" style="color: #333;">dVarSetMinusVarSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">uniqDSetMinusUniqSet</span></span>
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<pre style="margin: 0;"> <span id="LC297" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC293" class="line" lang="haskell"><span class="n" style="color: #333;">foldDVarSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Var</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></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;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DVarSet</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="LC294" class="line" lang="haskell"><span class="n" style="color: #333;">foldDVarSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldUniqDSet</span></span>
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<pre style="margin: 0;">+<span id="LC298" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Deterministic UniqFM] to learn about nondeterminism.</span></span>
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<pre style="margin: 0;">+<span id="LC299" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- If you use this please provide a justification why it doesn't introduce</span></span>
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<pre style="margin: 0;">+<span id="LC300" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- nondeterminism.</span></span>
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<pre style="margin: 0;">+<span id="LC301" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetStrictFoldDVarSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Var</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></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;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DVarSet</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="LC302" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetStrictFoldDVarSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetStrictFoldUniqDSet</span></span>
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<pre style="margin: 0;"> <span id="LC303" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC304" class="line" lang="haskell"><span class="n" style="color: #333;">anyDVarSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Var</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">DVarSet</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="LC305" class="line" lang="haskell"><span class="n" style="color: #333;">anyDVarSet</span> <span class="n" style="color: #333;">p</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">anyUDFM</span> <span class="n" style="color: #333;">p</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">getUniqDSet</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5006a7e1088511af71ef009debcbf97bb7e801a4#89165943f253c43100bca06548eba40ff0519ca5"><strong>compiler/typecheck/TcEvidence.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">@@ -15,8 +15,12 @@ module TcEvidence (</td>
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<pre style="margin: 0;"> <span id="LC15" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- * Evidence bindings</span></span>
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<pre style="margin: 0;"> <span id="LC16" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">TcEvBinds</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="kt" style="color: #458; font-weight: 600;">EvBindsVar</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span></span>
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<pre style="margin: 0;"> <span id="LC17" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">EvBindMap</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;">emptyEvBindMap</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">extendEvBinds</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC18" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">lookupEvBind</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">evBindMapBinds</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">foldEvBindMap</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">filterEvBindMap</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC18" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">lookupEvBind</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">evBindMapBinds</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC19" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">foldEvBindMap</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">nonDetStrictFoldEvBindMap</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC20" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">filterEvBindMap</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC21" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">isEmptyEvBindMap</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC22" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">evBindMapToVarSet</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC23" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">varSetMinusEvBindMap</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC24" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">EvBind</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;">emptyTcEvBinds</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">isEmptyTcEvBinds</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">mkGivenEvBind</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">mkWantedEvBind</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC25" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">evBindVar</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">isCoEvBindsVar</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC26" 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">@@ -55,6 +59,8 @@ module TcEvidence (</td>
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59
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<pre style="margin: 0;"> <span id="LC59" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC60" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GhcPrelude</span></span>
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61
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<pre style="margin: 0;"> <span id="LC61" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC62" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.DFM</span></span>
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<pre style="margin: 0;">+<span id="LC63" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.FM</span></span>
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<pre style="margin: 0;"> <span id="LC64" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Var</span></span>
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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.Coercion.Axiom</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</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">@@ -496,10 +502,22 @@ evBindMapBinds = foldEvBindMap consBag emptyBag</td>
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496
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<pre style="margin: 0;"> <span id="LC502" class="line" lang="haskell"><span class="n" style="color: #333;">foldEvBindMap</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">EvBind</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">EvBindMap</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="LC503" class="line" lang="haskell"><span class="n" style="color: #333;">foldEvBindMap</span> <span class="n" style="color: #333;">k</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">bs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldDVarEnv</span> <span class="n" style="color: #333;">k</span> <span class="n" style="color: #333;">z</span> <span class="p">(</span><span class="n" style="color: #333;">ev_bind_varenv</span> <span class="n" style="color: #333;">bs</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC504" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC505" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Deterministic UniqFM] to learn about nondeterminism.</span></span>
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506
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<pre style="margin: 0;">+<span id="LC506" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- If you use this please provide a justification why it doesn't introduce</span></span>
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507
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<pre style="margin: 0;">+<span id="LC507" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- nondeterminism.</span></span>
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<pre style="margin: 0;">+<span id="LC508" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetStrictFoldEvBindMap</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">EvBind</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">EvBindMap</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="LC509" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetStrictFoldEvBindMap</span> <span class="n" style="color: #333;">k</span> <span class="n" style="color: #333;">z</span> <span class="n" style="color: #333;">bs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetStrictFoldDVarEnv</span> <span class="n" style="color: #333;">k</span> <span class="n" style="color: #333;">z</span> <span class="p">(</span><span class="n" style="color: #333;">ev_bind_varenv</span> <span class="n" style="color: #333;">bs</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC510" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC511" class="line" lang="haskell"><span class="n" style="color: #333;">filterEvBindMap</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">EvBind</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">EvBindMap</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">EvBindMap</span></span>
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<pre style="margin: 0;"> <span id="LC512" class="line" lang="haskell"><span class="n" style="color: #333;">filterEvBindMap</span> <span class="n" style="color: #333;">k</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">EvBindMap</span> <span class="p">{</span> <span class="n" style="color: #333;">ev_bind_varenv</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">env</span> <span class="p">})</span></span>
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<pre style="margin: 0;"> <span id="LC513" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">EvBindMap</span> <span class="p">{</span> <span class="n" style="color: #333;">ev_bind_varenv</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">filterDVarEnv</span> <span class="n" style="color: #333;">k</span> <span class="n" style="color: #333;">env</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC514" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC515" class="line" lang="haskell"><span class="n" style="color: #333;">evBindMapToVarSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">EvBindMap</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span></span>
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<pre style="margin: 0;">+<span id="LC516" class="line" lang="haskell"><span class="n" style="color: #333;">evBindMapToVarSet</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">EvBindMap</span> <span class="n" style="color: #333;">dve</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">unsafeUFMToUniqSet</span> <span class="p">(</span><span class="n" style="color: #333;">mapUFM</span> <span class="n" style="color: #333;">evBindVar</span> <span class="p">(</span><span class="n" style="color: #333;">udfmToUfm</span> <span class="n" style="color: #333;">dve</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC517" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC518" class="line" lang="haskell"><span class="n" style="color: #333;">varSetMinusEvBindMap</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">EvBindMap</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span></span>
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<pre style="margin: 0;">+<span id="LC519" class="line" lang="haskell"><span class="n" style="color: #333;">varSetMinusEvBindMap</span> <span class="n" style="color: #333;">vs</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">EvBindMap</span> <span class="n" style="color: #333;">dve</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">vs</span> <span class="p">`</span><span class="n" style="color: #333;">uniqSetMinusUDFM</span><span class="p">`</span> <span class="n" style="color: #333;">dve</span></span>
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<pre style="margin: 0;">+<span id="LC520" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC521" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="kt" style="color: #458; font-weight: 600;">Outputable</span> <span class="kt" style="color: #458; font-weight: 600;">EvBindMap</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC522" class="line" lang="haskell"> <span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">EvBindMap</span> <span class="n" style="color: #333;">m</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">m</span></span>
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<pre style="margin: 0;"> <span id="LC523" 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">@@ -851,8 +869,8 @@ findNeededEvVars ev_binds seeds</td>
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<pre style="margin: 0;"> <span id="LC869" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">transCloVarSet</span> <span class="n" style="color: #333;">also_needs</span> <span class="n" style="color: #333;">seeds</span></span>
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<pre style="margin: 0;"> <span id="LC870" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC871" class="line" lang="haskell"> <span class="n" style="color: #333;">also_needs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span></span>
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<pre style="margin: 0;">-<span id="LC854" class="line" lang="haskell"> <span class="n" style="color: #333;">also_needs</span> <span class="n" style="color: #333;">needs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetFoldUniqSet</span> <span class="n" style="color: #333;">add</span> <span class="n" style="color: #333;">emptyVarSet</span> <span class="n" style="color: #333;">needs</span></span>
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<pre style="margin: 0;">-<span id="LC855" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use <span class="idiff left right">nonDetFoldUFM</span> here because we immediately</span></span>
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<pre style="margin: 0;">+<span id="LC872" class="line" lang="haskell"> <span class="n" style="color: #333;">also_needs</span> <span class="n" style="color: #333;">needs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDet<span class="idiff left right">Strict</span>FoldUniqSet</span> <span class="n" style="color: #333;">add</span> <span class="n" style="color: #333;">emptyVarSet</span> <span class="n" style="color: #333;">needs</span></span>
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<pre style="margin: 0;">+<span id="LC873" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use <span class="idiff left right">a non-deterministic fold</span> here because we immediately</span></span>
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<pre style="margin: 0;"> <span id="LC874" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- forget about the ordering by creating a set</span></span>
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<pre style="margin: 0;"> <span id="LC875" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC876" class="line" lang="haskell"> <span class="n" style="color: #333;">add</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;">VarSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5006a7e1088511af71ef009debcbf97bb7e801a4#75d517f701402b106e4d98d255eb24b57ba72aab"><strong>compiler/typecheck/TcSimplify.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">@@ -1862,11 +1862,13 @@ neededEvVars implic@(Implic { ic_given = givens</td>
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<pre style="margin: 0;"> <span id="LC1862" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tcvs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">getTcEvTyCoVars</span> <span class="n" style="color: #333;">ev_binds_var</span></span>
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<pre style="margin: 0;"> <span id="LC1863" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1864" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">seeds1</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldr</span> <span class="n" style="color: #333;">add_implic_seeds</span> <span class="n" style="color: #333;">old_needs</span> <span class="n" style="color: #333;">implics</span></span>
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<pre style="margin: 0;">-<span id="LC1865" class="line" lang="haskell"> <span class="n" style="color: #333;">seeds2</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldEvBindMap</span> <span class="n" style="color: #333;">add_wanted</span> <span class="n" style="color: #333;">seeds1</span> <span class="n" style="color: #333;">ev_binds</span></span>
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<pre style="margin: 0;">+<span id="LC1865" class="line" lang="haskell"> <span class="n" style="color: #333;">seeds2</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetStrictFoldEvBindMap</span> <span class="n" style="color: #333;">add_wanted</span> <span class="n" style="color: #333;">seeds1</span> <span class="n" style="color: #333;">ev_binds</span></span>
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<pre style="margin: 0;">+<span id="LC1866" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use a non-deterministic fold here</span></span>
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<pre style="margin: 0;">+<span id="LC1867" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- because add_wanted is commutative</span></span>
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<pre style="margin: 0;"> <span id="LC1868" class="line" lang="haskell"> <span class="n" style="color: #333;">seeds3</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">seeds2</span> <span class="p">`</span><span class="n" style="color: #333;">unionVarSet</span><span class="p">`</span> <span class="n" style="color: #333;">tcvs</span></span>
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<pre style="margin: 0;"> <span id="LC1869" class="line" lang="haskell"> <span class="n" style="color: #333;">need_inner</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">findNeededEvVars</span> <span class="n" style="color: #333;">ev_binds</span> <span class="n" style="color: #333;">seeds3</span></span>
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<pre style="margin: 0;"> <span id="LC1870" class="line" lang="haskell"> <span class="n" style="color: #333;">live_ev_binds</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">filterEvBindMap</span> <span class="p">(</span><span class="n" style="color: #333;">needed_ev_bind</span> <span class="n" style="color: #333;">need_inner</span><span class="p">)</span> <span class="n" style="color: #333;">ev_binds</span></span>
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<pre style="margin: 0;">-<span id="LC1869" class="line" lang="haskell"> <span class="n" style="color: #333;">need_outer</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;"><span class="idiff left">foldEvBindMap</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">del_ev_bndr</span></span> <span class="n" style="color: #333;">need_inner</span> <span class="n" style="color: #333;">live_ev_binds</span></span>
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<pre style="margin: 0;">+<span id="LC1871" class="line" lang="haskell"> <span class="n" style="color: #333;">need_outer</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;"><span class="idiff left right">varSetMinusEvBindMap</span></span> <span class="n" style="color: #333;">need_inner</span> <span class="n" style="color: #333;">live_ev_binds</span></span>
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<pre style="margin: 0;"> <span id="LC1872" class="line" lang="haskell"> <span class="p">`</span><span class="n" style="color: #333;">delVarSetList</span><span class="p">`</span> <span class="n" style="color: #333;">givens</span></span>
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<pre style="margin: 0;"> <span id="LC1873" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1874" class="line" lang="haskell"> <span class="p">;</span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">setTcEvBindsMap</span> <span class="n" style="color: #333;">ev_binds_var</span> <span class="n" style="color: #333;">live_ev_binds</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">@@ -1890,9 +1892,6 @@ neededEvVars implic@(Implic { ic_given = givens</td>
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<pre style="margin: 0;"> <span id="LC1892" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">is_given</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ev_var</span> <span class="p">`</span><span class="n" style="color: #333;">elemVarSet</span><span class="p">`</span> <span class="n" style="color: #333;">needed</span></span>
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<pre style="margin: 0;"> <span id="LC1893" 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;">True</span> <span class="c1" style="color: #998; font-style: italic;">-- Keep all wanted bindings</span></span>
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<pre style="margin: 0;"> <span id="LC1894" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC1893" class="line" lang="haskell"> <span class="n" style="color: #333;">del_ev_bndr</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">EvBind</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span></span>
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<pre style="margin: 0;">-<span id="LC1894" class="line" lang="haskell"> <span class="n" style="color: #333;">del_ev_bndr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">EvBind</span> <span class="p">{</span> <span class="n" style="color: #333;">eb_lhs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">v</span> <span class="p">})</span> <span class="n" style="color: #333;">needs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">delVarSet</span> <span class="n" style="color: #333;">needs</span> <span class="n" style="color: #333;">v</span></span>
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<pre style="margin: 0;">-<span id="LC1895" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1895" class="line" lang="haskell"> <span class="n" style="color: #333;">add_wanted</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">EvBind</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span></span>
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<pre style="margin: 0;"> <span id="LC1896" class="line" lang="haskell"> <span class="n" style="color: #333;">add_wanted</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">EvBind</span> <span class="p">{</span> <span class="n" style="color: #333;">eb_is_given</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">is_given</span><span class="p">,</span> <span class="n" style="color: #333;">eb_rhs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rhs</span> <span class="p">})</span> <span class="n" style="color: #333;">needs</span></span>
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<pre style="margin: 0;"> <span id="LC1897" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">is_given</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">needs</span> <span class="c1" style="color: #998; font-style: italic;">-- Add the rhs vars of the Wanted bindings only</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">@@ -2381,7 +2380,7 @@ floatEqualities skols given_ids ev_binds_var no_given_eqs</td>
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<pre style="margin: 0;"> <span id="LC2380" class="line" lang="haskell"> <span class="n" style="color: #333;">seed_skols</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkVarSet</span> <span class="n" style="color: #333;">skols</span> <span class="p">`</span><span class="n" style="color: #333;">unionVarSet</span><span class="p">`</span></span>
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<pre style="margin: 0;"> <span id="LC2381" class="line" lang="haskell"> <span class="n" style="color: #333;">mkVarSet</span> <span class="n" style="color: #333;">given_ids</span> <span class="p">`</span><span class="n" style="color: #333;">unionVarSet</span><span class="p">`</span></span>
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<pre style="margin: 0;"> <span id="LC2382" class="line" lang="haskell"> <span class="n" style="color: #333;">foldr</span> <span class="n" style="color: #333;">add_non_flt_ct</span> <span class="n" style="color: #333;">emptyVarSet</span> <span class="n" style="color: #333;">no_float_cts</span> <span class="p">`</span><span class="n" style="color: #333;">unionVarSet</span><span class="p">`</span></span>
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<pre style="margin: 0;">-<span id="LC2384" class="line" lang="haskell"> <span class="n" style="color: #333;"><span class="idiff left">foldEvBindMap</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">add_one_bind</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">empty</span>VarSet</span> <span class="n" style="color: #333;">binds</span></span>
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<pre style="margin: 0;">+<span id="LC2383" class="line" lang="haskell"> <span class="n" style="color: #333;"><span class="idiff left right">evBindMapTo</span>VarSet</span> <span class="n" style="color: #333;">binds</span></span>
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<pre style="margin: 0;"> <span id="LC2384" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- seed_skols: See Note [What prevents a constraint from floating] (1,2,3)</span></span>
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<pre style="margin: 0;"> <span id="LC2385" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Include the EvIds of any non-floating constraints</span></span>
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<pre style="margin: 0;"> <span id="LC2386" 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">@@ -2406,9 +2405,6 @@ floatEqualities skols given_ids ev_binds_var no_given_eqs</td>
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<pre style="margin: 0;"> <span id="LC2405" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span> <span class="n" style="color: #333;">flt_eqs</span><span class="p">,</span> <span class="n" style="color: #333;">wanteds</span> <span class="p">{</span> <span class="n" style="color: #333;">wc_simple</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">remaining_simples</span> <span class="p">}</span> <span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC2406" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC2407" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">-<span id="LC2409" class="line" lang="haskell"> <span class="n" style="color: #333;">add_one_bind</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">EvBind</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span></span>
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<pre style="margin: 0;">-<span id="LC2410" class="line" lang="haskell"> <span class="n" style="color: #333;">add_one_bind</span> <span class="n" style="color: #333;">bind</span> <span class="n" style="color: #333;">acc</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">extendVarSet</span> <span class="n" style="color: #333;">acc</span> <span class="p">(</span><span class="n" style="color: #333;">evBindVar</span> <span class="n" style="color: #333;">bind</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC2411" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC2408" class="line" lang="haskell"> <span class="n" style="color: #333;">add_non_flt_ct</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Ct</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">VarSet</span></span>
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<pre style="margin: 0;"> <span id="LC2409" class="line" lang="haskell"> <span class="n" style="color: #333;">add_non_flt_ct</span> <span class="n" style="color: #333;">ct</span> <span class="n" style="color: #333;">acc</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isDerivedCt</span> <span class="n" style="color: #333;">ct</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">acc</span></span>
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<pre style="margin: 0;"> <span id="LC2410" 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;">extendVarSet</span> <span class="n" style="color: #333;">acc</span> <span class="p">(</span><span class="n" style="color: #333;">ctEvId</span> <span class="n" style="color: #333;">ct</span><span class="p">)</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5006a7e1088511af71ef009debcbf97bb7e801a4#341fd962c5f2c9fcf8be3dbdaa9a14ee1538af07"><strong>compiler/typecheck/TcType.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">@@ -703,7 +703,9 @@ tcTyVarLevel tv</td>
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<pre style="margin: 0;"> <span id="LC703" class="line" lang="haskell"><span class="n" style="color: #333;">tcTypeLevel</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcLevel</span></span>
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<pre style="margin: 0;"> <span id="LC704" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Max level of any free var of the type</span></span>
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<pre style="margin: 0;"> <span id="LC705" class="line" lang="haskell"><span class="n" style="color: #333;">tcTypeLevel</span> <span class="n" style="color: #333;">ty</span></span>
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<pre style="margin: 0;">-<span id="LC706" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldDVarSet</span> <span class="n" style="color: #333;">add</span> <span class="n" style="color: #333;">topTcLevel</span> <span class="p">(</span><span class="n" style="color: #333;">tyCoVarsOfTypeDSet</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC706" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetStrictFoldDVarSet</span> <span class="n" style="color: #333;">add</span> <span class="n" style="color: #333;">topTcLevel</span> <span class="p">(</span><span class="n" style="color: #333;">tyCoVarsOfTypeDSet</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC707" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's safe to use a non-deterministic fold because `maxTcLevel` is</span></span>
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<pre style="margin: 0;">+<span id="LC708" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- commutative.</span></span>
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<pre style="margin: 0;"> <span id="LC709" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC710" class="line" lang="haskell"> <span class="n" style="color: #333;">add</span> <span class="n" style="color: #333;">v</span> <span class="n" style="color: #333;">lvl</span></span>
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<pre style="margin: 0;"> <span id="LC711" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isTcTyVar</span> <span class="n" style="color: #333;">v</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">lvl</span> <span class="p">`</span><span class="n" style="color: #333;">maxTcLevel</span><span class="p">`</span> <span class="n" style="color: #333;">tcTyVarLevel</span> <span class="n" style="color: #333;">v</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/5006a7e1088511af71ef009debcbf97bb7e801a4#fadb1ee8bcf9d6112f1216f52f995b0298a593b2"><strong>compiler/utils/GraphOps.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">@@ -63,8 +63,8 @@ addNode k node graph</td>
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<pre style="margin: 0;"> <span id="LC63" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">let</span></span>
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<pre style="margin: 0;"> <span id="LC64" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- add back conflict edges from other nodes to this one</span></span>
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<pre style="margin: 0;"> <span id="LC65" class="line" lang="haskell"> <span class="n" style="color: #333;">map_conflict</span> <span class="o" style="font-weight: 600;">=</span></span>
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<pre style="margin: 0;">-<span id="LC66" class="line" lang="haskell"> <span class="n" style="color: #333;">nonDetFoldUniqSet</span></span>
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<pre style="margin: 0;">-<span id="LC67" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use <span class="idiff left right">nonDetFoldUFM</span> here because the</span></span>
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<pre style="margin: 0;">+<span id="LC66" class="line" lang="haskell"> <span class="n" style="color: #333;">nonDet<span class="idiff left right">Strict</span>FoldUniqSet</span></span>
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<pre style="margin: 0;">+<span id="LC67" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use <span class="idiff left right">a non-deterministic fold</span> here because the</span></span>
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<pre style="margin: 0;"> <span id="LC68" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- operation is commutative</span></span>
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<pre style="margin: 0;"> <span id="LC69" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">adjustUFM_C</span> <span class="p">(</span><span class="nf" style="color: #900; 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;">n</span> <span class="p">{</span> <span class="n" style="color: #333;">nodeConflicts</span> <span class="o" style="font-weight: 600;">=</span></span>
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<pre style="margin: 0;"> <span id="LC70" class="line" lang="haskell"> <span class="n" style="color: #333;">addOneToUniqSet</span> <span class="p">(</span><span class="n" style="color: #333;">nodeConflicts</span> <span class="n" style="color: #333;">n</span><span class="p">)</span> <span class="n" style="color: #333;">k</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">@@ -73,8 +73,8 @@ addNode k node graph</td>
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<pre style="margin: 0;"> <span id="LC73" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC74" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- add back coalesce edges from other nodes to this one</span></span>
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<pre style="margin: 0;"> <span id="LC75" class="line" lang="haskell"> <span class="n" style="color: #333;">map_coalesce</span> <span class="o" style="font-weight: 600;">=</span></span>
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<pre style="margin: 0;">-<span id="LC76" class="line" lang="haskell"> <span class="n" style="color: #333;">nonDetFoldUniqSet</span></span>
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<pre style="margin: 0;">-<span id="LC77" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use <span class="idiff left right">nonDetFoldUFM</span> here because the</span></span>
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<pre style="margin: 0;">+<span id="LC76" class="line" lang="haskell"> <span class="n" style="color: #333;">nonDet<span class="idiff left right">Strict</span>FoldUniqSet</span></span>
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<pre style="margin: 0;">+<span id="LC77" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use <span class="idiff left right">a non-deterministic fold</span> here because the</span></span>
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<pre style="margin: 0;"> <span id="LC78" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- operation is commutative</span></span>
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<pre style="margin: 0;"> <span id="LC79" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">adjustUFM_C</span> <span class="p">(</span><span class="nf" style="color: #900; 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;">n</span> <span class="p">{</span> <span class="n" style="color: #333;">nodeCoalesce</span> <span class="o" style="font-weight: 600;">=</span></span>
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<pre style="margin: 0;"> <span id="LC80" class="line" lang="haskell"> <span class="n" style="color: #333;">addOneToUniqSet</span> <span class="p">(</span><span class="n" style="color: #333;">nodeCoalesce</span> <span class="n" style="color: #333;">n</span><span class="p">)</span> <span class="n" style="color: #333;">k</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">@@ -476,9 +476,9 @@ freezeNode k</td>
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<pre style="margin: 0;"> <span id="LC476" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">else</span> <span class="n" style="color: #333;">node</span> <span class="c1" style="color: #998; font-style: italic;">-- panic "GraphOps.freezeNode: edge to freeze wasn't in the coalesce set"</span></span>
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<pre style="margin: 0;"> <span id="LC477" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- If the edge isn't actually in the coelesce set then just ignore it.</span></span>
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<pre style="margin: 0;"> <span id="LC478" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC479" class="line" lang="haskell"> <span class="n" style="color: #333;">fm2</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDetFoldUniqSet</span> <span class="p">(</span><span class="n" style="color: #333;">adjustUFM_C</span> <span class="p">(</span><span class="n" style="color: #333;">freezeEdge</span> <span class="n" style="color: #333;">k</span><span class="p">))</span> <span class="n" style="color: #333;">fm1</span></span>
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<pre style="margin: 0;">-<span id="LC480" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use <span class="idiff left right">nonDetFoldUFM here because the operation</span></span></span>
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<pre style="margin: 0;">-<span id="LC481" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- is commutative</span></span>
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<pre style="margin: 0;">+<span id="LC479" class="line" lang="haskell"> <span class="n" style="color: #333;">fm2</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">nonDet<span class="idiff left right">Strict</span>FoldUniqSet</span> <span class="p">(</span><span class="n" style="color: #333;">adjustUFM_C</span> <span class="p">(</span><span class="n" style="color: #333;">freezeEdge</span> <span class="n" style="color: #333;">k</span><span class="p">))</span> <span class="n" style="color: #333;">fm1</span></span>
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<pre style="margin: 0;">+<span id="LC480" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- It's OK to use <span class="idiff left right">a non-deterministic fold here because the</span></span></span>
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<pre style="margin: 0;">+<span id="LC481" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- <span class="idiff left right">operation </span>is commutative</span></span>
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<pre style="margin: 0;"> <span id="LC482" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">nodeCoalesce</span> <span class="n" style="color: #333;">node</span></span>
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<pre style="margin: 0;"> <span id="LC483" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC484" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="n" style="color: #333;">fm2</span></span>
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