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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>
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<h4>
Commits:
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<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/30721598a93d161824bbb96e7ce9e5e6d4b31dfc">30721598</a></strong>
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<span>by Simon Jakobi</span>
<i>at 2020-04-02T13:18:57+02:00</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Delete foldUniqDSet and foldDVarSet
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<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e4d38d7c8a82c191a0ee8976e32198f4366c4646">e4d38d7c</a></strong>
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<span>by Simon Jakobi</span>
<i>at 2020-04-02T13:26:24+02:00</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Delete nonDetFoldUDFM, nonDetFoldUFM, nonDetFoldUniqSet,
... nonDetFoldUniqSet_Directly, nonDetFoldVarSet
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<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/ebbd82602573a3313119b079e56ede716d93bab3">ebbd8260</a></strong>
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<span>by Simon Jakobi</span>
<i>at 2020-04-02T13:37:03+02:00</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Comments
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<h4>9 changed files:</h4>
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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="#89a2e0e1a3095c7a42b10f2819049908908080e8">
compiler/GHC/Core/Unify.hs
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<a href="#9e7e910f99e3a46d2caa3b0102d7481a88f80960">
compiler/GHC/Rename/Source.hs
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<li class="file-stats">
<a href="#657eec52eed3c8be846a0b60eb6088d5f465de8a">
compiler/GHC/Stg/Lift/Analysis.hs
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<a href="#266bc13b57ed8c43a461b6d9a429c917879e16b4">
compiler/GHC/Types/Unique/DFM.hs
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<a href="#dd1734ed93e4694f773dd468a1855524e6bbca0f">
compiler/GHC/Types/Unique/DSet.hs
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<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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<a href="#8fa3c53ff1558af938c045405b5e177c50e91308">
compiler/GHC/Types/Var/Set.hs
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<h4>Changes:</h4>
<li id="de7d9d388885ce6e3a45a39fac6e2c36a7f94f69">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/53a3ff77d6fec5cf71ed0cd6bbeb40646e26234a...ebbd82602573a3313119b079e56ede716d93bab3#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">@@ -1582,11 +1582,13 @@ placeJoinCeiling le@(LE { le_ctxt_lvl = lvl })</td>
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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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1584
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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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1585
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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="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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<li id="89a2e0e1a3095c7a42b10f2819049908908080e8">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/53a3ff77d6fec5cf71ed0cd6bbeb40646e26234a...ebbd82602573a3313119b079e56ede716d93bab3#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">@@ -659,8 +659,8 @@ niSubstTvSet :: TvSubstEnv -> TyCoVarSet -> TyCoVarSet</td>
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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;">nonDetStrictFoldUniqSet</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">nonDetStrictFoldUFM 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="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/-/compare/53a3ff77d6fec5cf71ed0cd6bbeb40646e26234a...ebbd82602573a3313119b079e56ede716d93bab3#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">@@ -1423,7 +1423,7 @@ depAnalTyClDecls rdr_env kisig_fv_env ds_w_fvs</td>
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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;">nonDetStrictFoldUniqSet</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">nonDetStrictFoldUFM</span> because we immediately forget the</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/-/compare/53a3ff77d6fec5cf71ed0cd6bbeb40646e26234a...ebbd82602573a3313119b079e56ede716d93bab3#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">@@ -546,6 +546,7 @@ closureGrowth expander sizer group abs_ids = go</td>
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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;">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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<li id="266bc13b57ed8c43a461b6d9a429c917879e16b4">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/53a3ff77d6fec5cf71ed0cd6bbeb40646e26234a...ebbd82602573a3313119b079e56ede716d93bab3#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">@@ -57,7 +57,6 @@ module GHC.Types.Unique.DFM (</td>
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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;">nonDetStrictFoldUDFM</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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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -273,13 +272,10 @@ 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="LC276" 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="LC280" 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="LC281" 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="LC282" class="line" lang="haskell"></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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<li id="dd1734ed93e4694f773dd468a1855524e6bbca0f">
<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/53a3ff77d6fec5cf71ed0cd6bbeb40646e26234a...ebbd82602573a3313119b079e56ede716d93bab3#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">foldUniqDSet</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff right"> </span><span class="nf" style="color: #900; font-weight: 600;">nonDetStrictFoldUniqDSet</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;">nonDetStrictFoldUniqDSet</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">@@ -98,9 +98,6 @@ 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="LC103" 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;">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="LC102" 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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<pre style="margin: 0;"> <span id="LC103" class="line" lang="haskell"></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/53a3ff77d6fec5cf71ed0cd6bbeb40646e26234a...ebbd82602573a3313119b079e56ede716d93bab3#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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<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 right">nonDet</span>StrictFoldUFM</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">foldUFM</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">nonDetFoldUFM_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;">nonDetStrictFoldUFM</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">foldUFM</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">nonDetFoldUFM_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">@@ -318,9 +318,6 @@ 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;">nonDetFoldUFM</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;">UFM</span> <span class="n" style="color: #333;">m</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;">foldr</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="LC323" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC321" class="line" lang="haskell"><span class="n" style="color: #333;">nonDetStrictFoldUFM</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;">nonDetStrictFoldUFM</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;">UFM</span> <span class="n" style="color: #333;">m</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;">foldl'</span> <span class="p">(</span><span class="n" style="color: #333;">flip</span> <span class="n" style="color: #333;">k</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="LC323" class="line" lang="haskell"></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/53a3ff77d6fec5cf71ed0cd6bbeb40646e26234a...ebbd82602573a3313119b079e56ede716d93bab3#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">@@ -42,9 +42,7 @@ 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="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="LC47" 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="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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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -164,18 +162,9 @@ 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="LC167" 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="LC168" 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="LC169" class="line" lang="haskell"></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="LC173" 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="LC174" 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="LC175" 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="LC176" 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="LC177" 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="LC178" 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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<pre style="margin: 0;"> <span id="LC170" class="line" lang="haskell"><span class="n" style="color: #333;">mapUniqSet</span> <span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkUniqSet</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">f</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">nonDetEltsUniqSet</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/53a3ff77d6fec5cf71ed0cd6bbeb40646e26234a...ebbd82602573a3313119b079e56ede716d93bab3#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;">nonDet<span class="idiff left">FoldVarSet</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">nonDet</span>StrictFoldVarSet</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;">nonDetStrictFoldVarSet</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">@@ -37,7 +37,7 @@ module GHC.Types.Var.Set (</td>
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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>
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<pre style="margin: 0;">-<span id="LC40" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;"><span class="idiff left">foldDVarSet</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff right"> </span><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="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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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -154,9 +154,6 @@ 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="LC157" 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="LC158" 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="LC159" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC157" 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="LC158" 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="LC159" 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">@@ -295,9 +292,6 @@ minusDVarSet = minusUniqDSet</td>
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<pre style="margin: 0;"> <span id="LC292" 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="LC293" 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="LC294" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC298" 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="LC299" 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="LC300" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC295" 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="LC296" 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="LC297" class="line" lang="haskell"></span>
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