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<h3>
Andreas Klebinger pushed to branch wip/andreask/opt_cmm_sink_sets
at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
</h3>
<h4>
Commits:
</h4>
<ul>
<li>
<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/598bec4c7f6339a9f3d8f3b616d76cff29422c32">598bec4c</a></strong>
<div>
<span>by Andreas Klebinger</span>
<i>at 2020-12-01T12:09:08+01:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Cmm.Sink: Optimize retaining of assignments, live sets.
Sinking requires us to track live local regs after each
cmm statement. We used to do this via "Set LocalReg".
However we can replace this with a solution based on IntSet
which is overall more efficient without losing much. The thing
we lose is width of the variables, which isn't used by the sinking
pass anyway.
I also reworked how we keep assignments to regs mentioned in
skipped assignments. I put the details into
Note [Keeping assignemnts mentioned in skipped RHSs].
The gist of it is instead of keeping track of it via the use count
which is a `IntMap Int` we now use the live regs set (IntSet) which
is quite a bit faster.
I think it also matches the semantics a lot better. The skipped
(not discarded) assignment does in fact keep the regs on it's rhs
alive so keeping track of this in the live set seems like the clearer
solution as well.
Improves allocations for T3294 by yet another 1%.
</pre>
</li>
</ul>
<h4>5 changed files:</h4>
<ul>
<li class="file-stats">
<a href="#2d9f432ef2a75cf9ce101a5380b45e6cb06a42d0">
<span class="new-file">
+
compiler/GHC/Cmm/LRegSet.hs
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</a>
</li>
<li class="file-stats">
<a href="#95111d27913460e138e20c87f610b61c3745ab2b">
compiler/GHC/Cmm/Liveness.hs
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</li>
<li class="file-stats">
<a href="#b1390f6749e1a2dddcae35f88d55623ea6269f56">
compiler/GHC/Cmm/Sink.hs
</a>
</li>
<li class="file-stats">
<a href="#d3cf57b6a5ebc234dc7689db38ef9b6cf2259c0f">
compiler/GHC/Utils/Outputable.hs
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<li class="file-stats">
<a href="#0f33fd88c617246c7f89c4477d2d1d24f942df23">
compiler/ghc.cabal.in
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<h4>Changes:</h4>
<li id="2d9f432ef2a75cf9ce101a5380b45e6cb06a42d0">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/598bec4c7f6339a9f3d8f3b616d76cff29422c32#2d9f432ef2a75cf9ce101a5380b45e6cb06a42d0"><strong>compiler/GHC/Cmm/LRegSet.hs</strong></a>
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<pre style="margin: 0;">+<span id="LC1" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE GADTs #-}</span></span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE ScopedTypeVariables #-}</span></span>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">GHC.Cmm.LRegSet</span> <span class="p">(</span></span>
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<pre style="margin: 0;">+<span id="LC5" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">LRegKey</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">emptyLRegSet</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">nullLRegSet</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">insertLRegSet</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC11" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">elemLRegSet</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC12" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">deleteFromLRegSet</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC14" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">sizeLRegSet</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC15" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC16" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">plusLRegSet</span></span>
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<pre style="margin: 0;">+<span id="LC17" 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="LC18" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC19" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Prelude</span></span>
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<pre style="margin: 0;">+<span id="LC20" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique</span></span>
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<pre style="margin: 0;">+<span id="LC21" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Cmm.Expr</span></span>
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<pre style="margin: 0;">+<span id="LC22" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC23" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.IntSet</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">IntSet</span></span>
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<pre style="margin: 0;">+<span id="LC24" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC25" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Compact sets for membership tests of local variables.</span></span>
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<pre style="margin: 0;">+<span id="LC26" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC27" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IntSet</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">IntSet</span></span>
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<pre style="margin: 0;">+<span id="LC28" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">LRegKey</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="LC29" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC30" class="line" lang="haskell"><span class="n" style="color: #333;">emptyLRegSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</span></span>
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<pre style="margin: 0;">+<span id="LC31" class="line" lang="haskell"><span class="n" style="color: #333;">emptyLRegSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IntSet</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">empty</span></span>
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<pre style="margin: 0;">+<span id="LC32" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC33" class="line" lang="haskell"><span class="n" style="color: #333;">nullLRegSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</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="LC34" class="line" lang="haskell"><span class="n" style="color: #333;">nullLRegSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IntSet</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">null</span></span>
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<pre style="margin: 0;">+<span id="LC35" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC36" class="line" lang="haskell"><span class="n" style="color: #333;">insertLRegSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LocalReg</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</span></span>
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<pre style="margin: 0;">+<span id="LC37" class="line" lang="haskell"><span class="n" style="color: #333;">insertLRegSet</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IntSet</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">insert</span> <span class="p">(</span><span class="n" style="color: #333;">getKey</span> <span class="p">(</span><span class="n" style="color: #333;">getUnique</span> <span class="n" style="color: #333;">l</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC38" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC39" class="line" lang="haskell"><span class="n" style="color: #333;">elemLRegSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LocalReg</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</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="LC40" class="line" lang="haskell"><span class="n" style="color: #333;">elemLRegSet</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IntSet</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">member</span> <span class="p">(</span><span class="n" style="color: #333;">getKey</span> <span class="p">(</span><span class="n" style="color: #333;">getUnique</span> <span class="n" style="color: #333;">l</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC41" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC42" class="line" lang="haskell"><span class="n" style="color: #333;">deleteFromLRegSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LocalReg</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</span></span>
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<pre style="margin: 0;">+<span id="LC43" class="line" lang="haskell"><span class="n" style="color: #333;">deleteFromLRegSet</span> <span class="n" style="color: #333;">set</span> <span class="n" style="color: #333;">reg</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IntSet</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">delete</span> <span class="p">(</span><span class="n" style="color: #333;">getKey</span> <span class="o" style="font-weight: 600;">.</span> <span class="n" style="color: #333;">getUnique</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">reg</span><span class="p">)</span> <span class="n" style="color: #333;">set</span></span>
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<pre style="margin: 0;">+<span id="LC44" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC45" class="line" lang="haskell"><span class="n" style="color: #333;">sizeLRegSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">IntSet</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="LC46" class="line" lang="haskell"><span class="n" style="color: #333;">sizeLRegSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IntSet</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">size</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="n" style="color: #333;">plusLRegSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">IntSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IntSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">IntSet</span></span>
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<pre style="margin: 0;">+<span id="LC49" class="line" lang="haskell"><span class="n" style="color: #333;">plusLRegSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IntSet</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">union</span></span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/598bec4c7f6339a9f3d8f3b616d76cff29422c32#95111d27913460e138e20c87f610b61c3745ab2b"><strong>compiler/GHC/Cmm/Liveness.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">@@ -6,9 +6,12 @@</td>
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<pre style="margin: 0;"> <span id="LC6" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">GHC.Cmm.Liveness</span></span>
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<pre style="margin: 0;"> <span id="LC7" class="line" lang="haskell"> <span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">CmmLocalLive</span></span>
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<pre style="margin: 0;"> <span id="LC8" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">cmmLocalLiveness</span></span>
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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">cmmLocalLivenessL</span></span>
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<pre style="margin: 0;"> <span id="LC10" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">cmmGlobalLiveness</span></span>
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<pre style="margin: 0;"> <span id="LC11" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">liveLattice</span></span>
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<pre style="margin: 0;">+<span id="LC12" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">liveLatticeL</span></span>
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<pre style="margin: 0;"> <span id="LC13" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">gen_kill</span></span>
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<pre style="margin: 0;">+<span id="LC14" class="line" lang="haskell"> <span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">gen_killL</span></span>
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<pre style="margin: 0;"> <span id="LC15" class="line" lang="haskell"> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC16" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC17" 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">@@ -22,6 +25,7 @@ import GHC.Cmm.Dataflow.Block</td>
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<pre style="margin: 0;"> <span id="LC25" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Cmm.Dataflow.Collections</span></span>
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<pre style="margin: 0;"> <span id="LC26" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Cmm.Dataflow</span></span>
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<pre style="margin: 0;"> <span id="LC27" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Cmm.Dataflow.Label</span></span>
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<pre style="margin: 0;">+<span id="LC28" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Cmm.LRegSet</span></span>
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<pre style="margin: 0;"> <span id="LC29" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC30" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Data.Maybe</span></span>
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<pre style="margin: 0;"> <span id="LC31" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Utils.Outputable</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -92,3 +96,63 @@ xferLive platform (BlockCC eNode middle xNode) fBase =</td>
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<pre style="margin: 0;"> <span id="LC96" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="n" style="color: #333;">mapSingleton</span> <span class="p">(</span><span class="n" style="color: #333;">entryLabel</span> <span class="n" style="color: #333;">eNode</span><span class="p">)</span> <span class="n" style="color: #333;">result</span></span>
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<pre style="margin: 0;"> <span id="LC97" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# SPECIALIZE xferLive :: Platform -> TransferFun (CmmLive LocalReg) #-}</span></span>
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<pre style="margin: 0;"> <span id="LC98" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# SPECIALIZE xferLive :: Platform -> TransferFun (CmmLive GlobalReg) #-}</span></span>
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<pre style="margin: 0;">+<span id="LC99" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC100" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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<pre style="margin: 0;">+<span id="LC101" class="line" lang="haskell"><span class="cd">-- | Specialization that only retains the keys for local variables.</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;">--</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;">-- Local variablas are mostly glorified Ints, and some parts of the compiler</span></span>
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<pre style="margin: 0;">+<span id="LC104" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- really don't care about anything but the Int part. So we can avoid some</span></span>
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<pre style="margin: 0;">+<span id="LC105" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- overhead by computing a IntSet instead of a Set LocalReg which (unsurprisingly)</span></span>
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<pre style="margin: 0;">+<span id="LC106" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- is quite a bit faster.</span></span>
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<pre style="margin: 0;">+<span id="LC107" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------------------------------------------------------------------</span></span>
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<pre style="margin: 0;">+<span id="LC108" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC109" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">BlockEntryLivenessL</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">LabelMap</span> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</span></span>
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<pre style="margin: 0;">+<span id="LC110" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC111" class="line" lang="haskell"><span class="cd">-- | The dataflow lattice</span></span>
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<pre style="margin: 0;">+<span id="LC112" class="line" lang="haskell"><span class="n" style="color: #333;">liveLatticeL</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">DataflowLattice</span> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</span></span>
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<pre style="margin: 0;">+<span id="LC113" class="line" lang="haskell"><span class="n" style="color: #333;">liveLatticeL</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">DataflowLattice</span> <span class="n" style="color: #333;">emptyLRegSet</span> <span class="n" style="color: #333;">add</span></span>
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<pre style="margin: 0;">+<span id="LC114" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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115
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<pre style="margin: 0;">+<span id="LC115" class="line" lang="haskell"> <span class="n" style="color: #333;">add</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">OldFact</span> <span class="n" style="color: #333;">old</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">NewFact</span> <span class="n" style="color: #333;">new</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span></span>
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116
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<pre style="margin: 0;">+<span id="LC116" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">join</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">plusLRegSet</span> <span class="n" style="color: #333;">old</span> <span class="n" style="color: #333;">new</span></span>
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117
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<pre style="margin: 0;">+<span id="LC117" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="n" style="color: #333;">changedIf</span> <span class="p">(</span><span class="n" style="color: #333;">sizeLRegSet</span> <span class="n" style="color: #333;">join</span> <span class="o" style="font-weight: 600;">></span> <span class="n" style="color: #333;">sizeLRegSet</span> <span class="n" style="color: #333;">old</span><span class="p">)</span> <span class="n" style="color: #333;">join</span></span>
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118
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<pre style="margin: 0;">+<span id="LC118" class="line" lang="haskell"></span>
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119
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<pre style="margin: 0;">+<span id="LC119" class="line" lang="haskell"></span>
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120
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<pre style="margin: 0;">+<span id="LC120" class="line" lang="haskell"><span class="n" style="color: #333;">cmmLocalLivenessL</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Platform</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CmmGraph</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">BlockEntryLivenessL</span></span>
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121
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<pre style="margin: 0;">+<span id="LC121" class="line" lang="haskell"><span class="n" style="color: #333;">cmmLocalLivenessL</span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">graph</span> <span class="o" style="font-weight: 600;">=</span></span>
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122
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<pre style="margin: 0;">+<span id="LC122" class="line" lang="haskell"> <span class="n" style="color: #333;">check</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">analyzeCmmBwd</span> <span class="n" style="color: #333;">liveLatticeL</span> <span class="p">(</span><span class="n" style="color: #333;">xferLiveL</span> <span class="n" style="color: #333;">platform</span><span class="p">)</span> <span class="n" style="color: #333;">graph</span> <span class="n" style="color: #333;">mapEmpty</span></span>
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123
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<pre style="margin: 0;">+<span id="LC123" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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124
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<pre style="margin: 0;">+<span id="LC124" class="line" lang="haskell"> <span class="n" style="color: #333;">entry</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">g_entry</span> <span class="n" style="color: #333;">graph</span></span>
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125
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<pre style="margin: 0;">+<span id="LC125" class="line" lang="haskell"> <span class="n" style="color: #333;">check</span> <span class="n" style="color: #333;">facts</span> <span class="o" style="font-weight: 600;">=</span></span>
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<pre style="margin: 0;">+<span id="LC126" class="line" lang="haskell"> <span class="n" style="color: #333;">noLiveOnEntryL</span> <span class="n" style="color: #333;">entry</span> <span class="p">(</span><span class="n" style="color: #333;">expectJust</span> <span class="s" style="color: #d14;">"check"</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">mapLookup</span> <span class="n" style="color: #333;">entry</span> <span class="n" style="color: #333;">facts</span><span class="p">)</span> <span class="n" style="color: #333;">facts</span></span>
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<pre style="margin: 0;">+<span id="LC127" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC128" class="line" lang="haskell"><span class="cd">-- | On entry to the procedure, there had better not be any LocalReg's live-in.</span></span>
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<pre style="margin: 0;">+<span id="LC129" class="line" lang="haskell"><span class="n" style="color: #333;">noLiveOnEntryL</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">BlockId</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</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>
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<pre style="margin: 0;">+<span id="LC130" class="line" lang="haskell"><span class="n" style="color: #333;">noLiveOnEntryL</span> <span class="n" style="color: #333;">bid</span> <span class="n" style="color: #333;">in_fact</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">=</span></span>
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131
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<pre style="margin: 0;">+<span id="LC131" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">nullLRegSet</span> <span class="n" style="color: #333;">in_fact</span> <span class="kr" style="font-weight: 600;">then</span> <span class="n" style="color: #333;">x</span></span>
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132
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<pre style="margin: 0;">+<span id="LC132" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- TODO: Since LRegSet is a synonym we will just dump the keys as ints,</span></span>
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133
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<pre style="margin: 0;">+<span id="LC133" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- which is not actually that helpful.</span></span>
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134
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<pre style="margin: 0;">+<span id="LC134" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">else</span> <span class="n" style="color: #333;">pprPanic</span> <span class="s" style="color: #d14;">"LocalReg's live-in to graph"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">bid</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">in_fact</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC138" class="line" lang="haskell"><span class="n" style="color: #333;">gen_killL</span></span>
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<pre style="margin: 0;">+<span id="LC139" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">DefinerOfRegs</span> <span class="kt" style="color: #458; font-weight: 600;">LocalReg</span> <span class="n" style="color: #333;">n</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">UserOfRegs</span> <span class="kt" style="color: #458; font-weight: 600;">LocalReg</span> <span class="n" style="color: #333;">n</span><span class="p">)</span></span>
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140
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<pre style="margin: 0;">+<span id="LC140" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">Platform</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="kt" style="color: #458; font-weight: 600;">LRegSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</span></span>
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141
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<pre style="margin: 0;">+<span id="LC141" class="line" lang="haskell"><span class="n" style="color: #333;">gen_killL</span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">node</span> <span class="n" style="color: #333;">set</span> <span class="o" style="font-weight: 600;">=</span></span>
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142
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<pre style="margin: 0;">+<span id="LC142" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">afterKill</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldRegsDefd</span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">deleteFromLRegSet</span> <span class="n" style="color: #333;">set</span> <span class="n" style="color: #333;">node</span></span>
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143
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<pre style="margin: 0;">+<span id="LC143" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="n" style="color: #333;">foldRegsUsed</span> <span class="n" style="color: #333;">platform</span> <span class="p">(</span><span class="n" style="color: #333;">flip</span> <span class="n" style="color: #333;">insertLRegSet</span><span class="p">)</span> <span class="n" style="color: #333;">afterKill</span> <span class="n" style="color: #333;">node</span></span>
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144
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<pre style="margin: 0;">+<span id="LC144" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# INLINE gen_killL #-}</span></span>
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145
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<pre style="margin: 0;">+<span id="LC145" class="line" lang="haskell"></span>
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146
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<pre style="margin: 0;">+<span id="LC146" class="line" lang="haskell"><span class="n" style="color: #333;">xferLiveL</span></span>
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<pre style="margin: 0;">+<span id="LC147" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">UserOfRegs</span> <span class="kt" style="color: #458; font-weight: 600;">LocalReg</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CmmNode</span> <span class="kt" style="color: #458; font-weight: 600;">O</span> <span class="kt" style="color: #458; font-weight: 600;">O</span><span class="p">)</span></span>
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148
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<pre style="margin: 0;">+<span id="LC148" class="line" lang="haskell"> <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">DefinerOfRegs</span> <span class="kt" style="color: #458; font-weight: 600;">LocalReg</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CmmNode</span> <span class="kt" style="color: #458; font-weight: 600;">O</span> <span class="kt" style="color: #458; font-weight: 600;">O</span><span class="p">)</span></span>
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149
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<pre style="margin: 0;">+<span id="LC149" class="line" lang="haskell"> <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">UserOfRegs</span> <span class="kt" style="color: #458; font-weight: 600;">LocalReg</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CmmNode</span> <span class="kt" style="color: #458; font-weight: 600;">O</span> <span class="kt" style="color: #458; font-weight: 600;">C</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC150" class="line" lang="haskell"> <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">DefinerOfRegs</span> <span class="kt" style="color: #458; font-weight: 600;">LocalReg</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CmmNode</span> <span class="kt" style="color: #458; font-weight: 600;">O</span> <span class="kt" style="color: #458; font-weight: 600;">C</span><span class="p">)</span></span>
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151
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<pre style="margin: 0;">+<span id="LC151" class="line" lang="haskell"> <span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC152" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">Platform</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TransferFun</span> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</span></span>
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153
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<pre style="margin: 0;">+<span id="LC153" class="line" lang="haskell"><span class="n" style="color: #333;">xferLiveL</span> <span class="n" style="color: #333;">platform</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">BlockCC</span> <span class="n" style="color: #333;">eNode</span> <span class="n" style="color: #333;">middle</span> <span class="n" style="color: #333;">xNode</span><span class="p">)</span> <span class="n" style="color: #333;">fBase</span> <span class="o" style="font-weight: 600;">=</span></span>
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154
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<pre style="margin: 0;">+<span id="LC154" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">joined</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">gen_killL</span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">xNode</span> <span class="o" style="font-weight: 600;">$!</span> <span class="n" style="color: #333;">joinOutFacts</span> <span class="n" style="color: #333;">liveLatticeL</span> <span class="n" style="color: #333;">xNode</span> <span class="n" style="color: #333;">fBase</span></span>
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<pre style="margin: 0;">+<span id="LC155" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">!</span><span class="n" style="color: #333;">result</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldNodesBwdOO</span> <span class="p">(</span><span class="n" style="color: #333;">gen_killL</span> <span class="n" style="color: #333;">platform</span><span class="p">)</span> <span class="n" style="color: #333;">middle</span> <span class="n" style="color: #333;">joined</span></span>
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156
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<pre style="margin: 0;">+<span id="LC156" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">in</span> <span class="n" style="color: #333;">mapSingleton</span> <span class="p">(</span><span class="n" style="color: #333;">entryLabel</span> <span class="n" style="color: #333;">eNode</span><span class="p">)</span> <span class="n" style="color: #333;">result</span></span>
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157
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<pre style="margin: 0;">+<span id="LC157" class="line" lang="haskell"></span>
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<td class="diff-line-num new new_line" data-linenumber="158" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
158
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<pre style="margin: 0;">+<span id="LC158" class="line" lang="haskell"></span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/598bec4c7f6339a9f3d8f3b616d76cff29422c32#b1390f6749e1a2dddcae35f88d55623ea6269f56"><strong>compiler/GHC/Cmm/Sink.hs</strong></a>
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<pre style="margin: 0;"> <span id="LC1" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE GADTs #-}</span></span>
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<pre style="margin: 0;"> <span id="LC2" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE ScopedTypeVariables #-}</span></span>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC4" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">GHC.Cmm.Sink</span> <span class="p">(</span></span>
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<pre style="margin: 0;"> <span id="LC5" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">cmmSink</span></span>
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<pre style="margin: 0;"> <span id="LC6" class="line" lang="haskell"> <span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="9" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="10" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -9,6 +10,7 @@ import GHC.Prelude</td>
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<pre style="margin: 0;"> <span id="LC10" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Cmm</span></span>
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<pre style="margin: 0;"> <span id="LC11" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Cmm.Opt</span></span>
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<pre style="margin: 0;"> <span id="LC12" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Cmm.Liveness</span></span>
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<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Cmm.LRegSet</span></span>
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<pre style="margin: 0;"> <span id="LC14" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Cmm.Utils</span></span>
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<pre style="margin: 0;"> <span id="LC15" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Cmm.Dataflow.Block</span></span>
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<pre style="margin: 0;"> <span id="LC16" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Cmm.Dataflow.Label</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">@@ -17,32 +19,14 @@ import GHC.Cmm.Dataflow.Graph</td>
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<pre style="margin: 0;"> <span id="LC19" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Platform.Regs</span></span>
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<pre style="margin: 0;"> <span id="LC20" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC21" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Platform</span></span>
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<pre style="margin: 0;">-<span id="LC20" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique</span></span>
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<pre style="margin: 0;"> <span id="LC22" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Types.Unique.FM</span></span>
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<pre style="margin: 0;"> <span id="LC23" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC24" 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.IntSet</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">IntSet</span></span>
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<pre style="margin: 0;"> <span id="LC25" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.List</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">partition</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC25" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="k" style="font-weight: 600;">qualified</span> <span class="nn" style="color: #555;">Data.Set</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">Set</span></span>
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<pre style="margin: 0;"> <span id="LC26" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Maybe</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="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Exts</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">inline</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC29" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC30" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Compact sets for membership tests of local variables.</span></span>
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<pre style="margin: 0;">-<span id="LC31" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC32" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IntSet</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">IntSet</span></span>
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<pre style="margin: 0;">-<span id="LC33" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC34" class="line" lang="haskell"><span class="n" style="color: #333;">emptyLRegSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</span></span>
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<pre style="margin: 0;">-<span id="LC35" class="line" lang="haskell"><span class="n" style="color: #333;">emptyLRegSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IntSet</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">empty</span></span>
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<pre style="margin: 0;">-<span id="LC36" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC37" class="line" lang="haskell"><span class="n" style="color: #333;">nullLRegSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</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="LC38" class="line" lang="haskell"><span class="n" style="color: #333;">nullLRegSet</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IntSet</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">null</span></span>
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<pre style="margin: 0;">-<span id="LC39" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC40" class="line" lang="haskell"><span class="n" style="color: #333;">insertLRegSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LocalReg</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</span></span>
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<pre style="margin: 0;">-<span id="LC41" class="line" lang="haskell"><span class="n" style="color: #333;">insertLRegSet</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IntSet</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">insert</span> <span class="p">(</span><span class="n" style="color: #333;">getKey</span> <span class="p">(</span><span class="n" style="color: #333;">getUnique</span> <span class="n" style="color: #333;">l</span><span class="p">))</span></span>
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<pre style="margin: 0;">-<span id="LC42" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC43" class="line" lang="haskell"><span class="n" style="color: #333;">elemLRegSet</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LocalReg</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</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="LC44" class="line" lang="haskell"><span class="n" style="color: #333;">elemLRegSet</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IntSet</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">member</span> <span class="p">(</span><span class="n" style="color: #333;">getKey</span> <span class="p">(</span><span class="n" style="color: #333;">getUnique</span> <span class="n" style="color: #333;">l</span><span class="p">))</span></span>
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<pre style="margin: 0;">-<span id="LC45" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC30" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- -----------------------------------------------------------------------------</span></span>
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<pre style="margin: 0;"> <span id="LC31" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Sinking and inlining</span></span>
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<pre style="margin: 0;"> <span id="LC32" 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">@@ -170,8 +154,8 @@ type Assignments = [Assignment]</td>
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<pre style="margin: 0;"> <span id="LC154" class="line" lang="haskell"><span class="n" style="color: #333;">cmmSink</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Platform</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CmmGraph</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CmmGraph</span></span>
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<pre style="margin: 0;"> <span id="LC155" class="line" lang="haskell"><span class="n" style="color: #333;">cmmSink</span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">graph</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ofBlockList</span> <span class="p">(</span><span class="n" style="color: #333;">g_entry</span> <span class="n" style="color: #333;">graph</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">sink</span> <span class="n" style="color: #333;">mapEmpty</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">blocks</span></span>
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<pre style="margin: 0;"> <span id="LC156" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">-<span id="LC173" class="line" lang="haskell"> <span class="n" style="color: #333;">liveness</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">cmmLocalLiveness</span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">graph</span></span>
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<pre style="margin: 0;">-<span id="LC174" class="line" lang="haskell"> <span class="n" style="color: #333;">getLive</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mapFindWithDefault</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Set</span></span><span class="o" style="font-weight: 600;"><span class="idiff">.</span></span><span class="n" style="color: #333;"><span class="idiff right">empty</span></span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">liveness</span></span>
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<pre style="margin: 0;">+<span id="LC157" class="line" lang="haskell"> <span class="n" style="color: #333;">liveness</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">cmmLocalLiveness<span class="idiff left right">L</span></span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">graph</span></span>
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<pre style="margin: 0;">+<span id="LC158" class="line" lang="haskell"> <span class="n" style="color: #333;">getLive</span> <span class="n" style="color: #333;">l</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mapFindWithDefault</span> <span class="n" style="color: #333;"><span class="idiff left right">emptyLRegSet</span></span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">liveness</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="LC160" class="line" lang="haskell"> <span class="n" style="color: #333;">blocks</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">revPostorder</span> <span class="n" style="color: #333;">graph</span></span>
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<pre style="margin: 0;"> <span id="LC161" 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">@@ -191,8 +175,8 @@ cmmSink platform graph = ofBlockList (g_entry graph) $ sink mapEmpty $ blocks</td>
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191
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<pre style="margin: 0;"> <span id="LC175" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Annotate the middle nodes with the registers live *after*</span></span>
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<pre style="margin: 0;"> <span id="LC176" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- the node. This will help us decide whether we can inline</span></span>
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<pre style="margin: 0;"> <span id="LC177" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- an assignment in the current node or not.</span></span>
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<pre style="margin: 0;">-<span id="LC194" class="line" lang="haskell"> <span class="n" style="color: #333;">live</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Set</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">unions</span> <span class="p">(</span><span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">getLive</span> <span class="n" style="color: #333;">succs</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC195" class="line" lang="haskell"> <span class="n" style="color: #333;">live_middle</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">gen_kill</span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">last</span> <span class="n" style="color: #333;">live</span></span>
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<pre style="margin: 0;">+<span id="LC178" class="line" lang="haskell"> <span class="n" style="color: #333;">live</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">Int</span>Set</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">unions</span> <span class="p">(</span><span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">getLive</span> <span class="n" style="color: #333;">succs</span><span class="p">)</span></span>
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179
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<pre style="margin: 0;">+<span id="LC179" class="line" lang="haskell"> <span class="n" style="color: #333;">live_middle</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">gen_kill<span class="idiff left right">L</span></span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">last</span> <span class="n" style="color: #333;">live</span></span>
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196
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180
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<pre style="margin: 0;"> <span id="LC180" class="line" lang="haskell"> <span class="n" style="color: #333;">ann_middles</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">annotate</span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">live_middle</span> <span class="p">(</span><span class="n" style="color: #333;">blockToList</span> <span class="n" style="color: #333;">middle</span><span class="p">)</span></span>
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197
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181
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<pre style="margin: 0;"> <span id="LC181" class="line" lang="haskell"></span>
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198
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182
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<pre style="margin: 0;"> <span id="LC182" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Now sink and inline in this block</span></span>
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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="188" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -204,7 +188,7 @@ cmmSink platform graph = ofBlockList (g_entry graph) $ sink mapEmpty $ blocks</td>
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204
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188
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<pre style="margin: 0;"> <span id="LC188" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- one predecessor), so identify the join points and the set</span></span>
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205
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189
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<pre style="margin: 0;"> <span id="LC189" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- of registers live in them.</span></span>
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<pre style="margin: 0;"> <span id="LC190" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">joins</span><span class="p">,</span> <span class="n" style="color: #333;">nonjoins</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">partition</span> <span class="p">(`</span><span class="n" style="color: #333;">mapMember</span><span class="p">`</span> <span class="n" style="color: #333;">join_pts</span><span class="p">)</span> <span class="n" style="color: #333;">succs</span></span>
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207
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<pre style="margin: 0;">-<span id="LC207" class="line" lang="haskell"> <span class="n" style="color: #333;">live_in_joins</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Set</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">unions</span> <span class="p">(</span><span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">getLive</span> <span class="n" style="color: #333;">joins</span><span class="p">)</span></span>
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191
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<pre style="margin: 0;">+<span id="LC191" class="line" lang="haskell"> <span class="n" style="color: #333;">live_in_joins</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">Int</span>Set</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">unions</span> <span class="p">(</span><span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">getLive</span> <span class="n" style="color: #333;">joins</span><span class="p">)</span></span>
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208
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<pre style="margin: 0;"> <span id="LC192" class="line" lang="haskell"></span>
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209
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<pre style="margin: 0;"> <span id="LC193" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- We do not want to sink an assignment into multiple branches,</span></span>
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<pre style="margin: 0;"> <span id="LC194" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- so identify the set of registers live in multiple successors.</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">@@ -213,26 +197,28 @@ cmmSink platform graph = ofBlockList (g_entry graph) $ sink mapEmpty $ blocks</td>
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213
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<pre style="margin: 0;"> <span id="LC197" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- now live in multiple branches.</span></span>
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<pre style="margin: 0;"> <span id="LC198" class="line" lang="haskell"> <span class="n" style="color: #333;">init_live_sets</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">getLive</span> <span class="n" style="color: #333;">nonjoins</span></span>
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<pre style="margin: 0;"> <span id="LC199" class="line" lang="haskell"> <span class="n" style="color: #333;">live_in_multi</span> <span class="n" style="color: #333;">live_sets</span> <span class="n" style="color: #333;">r</span> <span class="o" style="font-weight: 600;">=</span></span>
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216
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<pre style="margin: 0;">-<span id="LC216" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">filter</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Set</span></span><span class="o" style="font-weight: 600;"><span class="idiff">.</span></span><span class="n" style="color: #333;"><span class="idiff right">member</span></span> <span class="n" style="color: #333;">r</span><span class="p">)</span> <span class="n" style="color: #333;">live_sets</span> <span class="kr" style="font-weight: 600;">of</span></span>
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200
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<pre style="margin: 0;">+<span id="LC200" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">filter</span> <span class="p">(</span><span class="n" style="color: #333;"><span class="idiff left right">elemLRegSet</span></span> <span class="n" style="color: #333;">r</span><span class="p">)</span> <span class="n" style="color: #333;">live_sets</span> <span class="kr" style="font-weight: 600;">of</span></span>
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217
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201
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<pre style="margin: 0;"> <span id="LC201" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">_one</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">_two</span><span class="o" style="font-weight: 600;">:</span><span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
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218
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202
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<pre style="margin: 0;"> <span id="LC202" class="line" lang="haskell"> <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="LC203" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC204" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Now, drop any assignments that we will not sink any further.</span></span>
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<pre style="margin: 0;"> <span id="LC205" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">dropped_last</span><span class="p">,</span> <span class="n" style="color: #333;">assigs''</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dropAssignments</span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">drop_if</span> <span class="n" style="color: #333;">init_live_sets</span> <span class="n" style="color: #333;">assigs'</span></span>
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206
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<pre style="margin: 0;"> <span id="LC206" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC207" class="line" lang="haskell"> <span class="n" style="color: #333;">drop_if</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">LocalReg</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">CmmExpr</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">AbsMem</span><span class="p">)</span></span>
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208
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<pre style="margin: 0;">+<span id="LC208" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LRegSet</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;">Bool</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LRegSet</span><span class="p">])</span></span>
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223
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<pre style="margin: 0;"> <span id="LC209" class="line" lang="haskell"> <span class="n" style="color: #333;">drop_if</span> <span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="n" style="color: #333;">r</span><span class="p">,</span><span class="n" style="color: #333;">rhs</span><span class="p">,</span><span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="n" style="color: #333;">live_sets</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">should_drop</span><span class="p">,</span> <span class="n" style="color: #333;">live_sets'</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC210" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC211" class="line" lang="haskell"> <span class="n" style="color: #333;">should_drop</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">conflicts</span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">final_last</span></span>
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<pre style="margin: 0;"> <span id="LC212" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">||</span> <span class="n" style="color: #333;">not</span> <span class="p">(</span><span class="n" style="color: #333;">isTrivial</span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">rhs</span><span class="p">)</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">live_in_multi</span> <span class="n" style="color: #333;">live_sets</span> <span class="n" style="color: #333;">r</span></span>
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<pre style="margin: 0;">-<span id="LC227" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">||</span> <span class="n" style="color: #333;">r</span> <span class="p">`</span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Set</span></span><span class="o" style="font-weight: 600;"><span class="idiff">.</span></span><span class="n" style="color: #333;"><span class="idiff right">member</span></span><span class="p">`</span> <span class="n" style="color: #333;">live_in_joins</span></span>
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<pre style="margin: 0;">+<span id="LC213" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">||</span> <span class="n" style="color: #333;">r</span> <span class="p">`</span><span class="n" style="color: #333;"><span class="idiff left right">elemLRegSet</span></span><span class="p">`</span> <span class="n" style="color: #333;">live_in_joins</span></span>
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<pre style="margin: 0;"> <span id="LC214" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC215" class="line" lang="haskell"> <span class="n" style="color: #333;">live_sets'</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">should_drop</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">live_sets</span></span>
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<pre style="margin: 0;"> <span id="LC216" 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;">map</span> <span class="n" style="color: #333;">upd</span> <span class="n" style="color: #333;">live_sets</span></span>
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<pre style="margin: 0;"> <span id="LC217" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC232" class="line" lang="haskell"> <span class="n" style="color: #333;">upd</span> <span class="n" style="color: #333;">set</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">r</span> <span class="p">`</span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Set</span></span><span class="o" style="font-weight: 600;"><span class="idiff">.</span></span><span class="n" style="color: #333;"><span class="idiff">member</span></span><span class="p"><span class="idiff">`</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">set</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">set</span></span><span class="idiff"> </span><span class="p"><span class="idiff right">`</span></span><span class="kt" style="color: #458; font-weight: 600;">Set</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">union</span><span class="p">`</span> <span class="n" style="color: #333;">live_rhs</span></span>
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<pre style="margin: 0;">+<span id="LC218" class="line" lang="haskell"> <span class="n" style="color: #333;">upd</span> <span class="n" style="color: #333;">set</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">r</span> <span class="p">`</span><span class="n" style="color: #333;"><span class="idiff left">elemLRegSet</span></span><span class="p"><span class="idiff">`</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">set</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">set</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 right">Int</span>Set</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">union</span><span class="p">`</span> <span class="n" style="color: #333;">live_rhs</span></span>
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<pre style="margin: 0;"> <span id="LC219" 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;">set</span></span>
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<pre style="margin: 0;"> <span id="LC220" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC235" class="line" lang="haskell"> <span class="n" style="color: #333;">live_rhs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldRegsUsed</span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;"><span class="idiff left">extendRegSet</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">empty</span>RegSet</span> <span class="n" style="color: #333;">rhs</span></span>
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<pre style="margin: 0;">+<span id="LC221" class="line" lang="haskell"> <span class="n" style="color: #333;">live_rhs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldRegsUsed</span> <span class="n" style="color: #333;">platform</span> <span class="p"><span class="idiff left">(</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">insertLRegSet</span></span><span class="p"><span class="idiff">)</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">emptyL</span>RegSet</span> <span class="n" style="color: #333;">rhs</span></span>
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<pre style="margin: 0;"> <span id="LC222" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC223" class="line" lang="haskell"> <span class="n" style="color: #333;">final_middle</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldl'</span> <span class="n" style="color: #333;">blockSnoc</span> <span class="n" style="color: #333;">middle'</span> <span class="n" style="color: #333;">dropped_last</span></span>
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<pre style="margin: 0;"> <span id="LC224" 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">@@ -269,9 +255,9 @@ isTrivial _ _ = False</td>
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<pre style="margin: 0;"> <span id="LC255" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;"> <span id="LC256" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- annotate each node with the set of registers live *after* the node</span></span>
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<pre style="margin: 0;"> <span id="LC257" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;">-<span id="LC272" class="line" lang="haskell"><span class="n" style="color: #333;">annotate</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Platform</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">L<span class="idiff left">ocalRegSet</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff"> </span><span class="p"><span class="idiff">[</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">CmmNode</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">O</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">O</span></span><span class="p"><span class="idiff">]</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff"> </span><span class="p"><span class="idiff">[(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">Local</span>RegSet</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">CmmNode</span> <span class="kt" style="color: #458; font-weight: 600;">O</span> <span class="kt" style="color: #458; font-weight: 600;">O</span><span class="p">)]</span></span>
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<pre style="margin: 0;">+<span id="LC258" class="line" lang="haskell"><span class="n" style="color: #333;">annotate</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Platform</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">L<span class="idiff left">RegSet</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff"> </span><span class="p"><span class="idiff">[</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">CmmNode</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">O</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">O</span></span><span class="p"><span class="idiff">]</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">-></span></span><span class="idiff"> </span><span class="p"><span class="idiff">[(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff right">L</span>RegSet</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">CmmNode</span> <span class="kt" style="color: #458; font-weight: 600;">O</span> <span class="kt" style="color: #458; font-weight: 600;">O</span><span class="p">)]</span></span>
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<pre style="margin: 0;"> <span id="LC259" class="line" lang="haskell"><span class="n" style="color: #333;">annotate</span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">live</span> <span class="n" style="color: #333;">nodes</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">snd</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">foldr</span> <span class="n" style="color: #333;">ann</span> <span class="p">(</span><span class="n" style="color: #333;">live</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">[]</span><span class="p">)</span> <span class="n" style="color: #333;">nodes</span></span>
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<pre style="margin: 0;">-<span id="LC274" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span> <span class="n" style="color: #333;">ann</span> <span class="n" style="color: #333;">n</span> <span class="p">(</span><span class="n" style="color: #333;">live</span><span class="p">,</span><span class="n" style="color: #333;">nodes</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">gen_kill</span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">live</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">live</span><span class="p">,</span><span class="n" style="color: #333;">n</span><span class="p">)</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">nodes</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC260" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span> <span class="n" style="color: #333;">ann</span> <span class="n" style="color: #333;">n</span> <span class="p">(</span><span class="n" style="color: #333;">live</span><span class="p">,</span><span class="n" style="color: #333;">nodes</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">gen_kill<span class="idiff left right">L</span></span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">n</span> <span class="n" style="color: #333;">live</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">live</span><span class="p">,</span><span class="n" style="color: #333;">n</span><span class="p">)</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">nodes</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC261" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC262" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;"> <span id="LC263" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Find the blocks that have multiple successors (join points)</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="288" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -288,13 +274,13 @@ findJoinPoints blocks = mapFilter (>1) succ_counts</td>
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<pre style="margin: 0;"> <span id="LC274" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- filter the list of assignments to remove any assignments that</span></span>
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<pre style="margin: 0;"> <span id="LC275" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- are not live in a continuation.</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;">--</span></span>
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<pre style="margin: 0;">-<span id="LC291" class="line" lang="haskell"><span class="n" style="color: #333;">filterAssignments</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Platform</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">L<span class="idiff left right">ocal</span>RegSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Assignments</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Assignments</span></span>
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<pre style="margin: 0;">+<span id="LC277" class="line" lang="haskell"><span class="n" style="color: #333;">filterAssignments</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Platform</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Assignments</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Assignments</span></span>
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<pre style="margin: 0;"> <span id="LC278" class="line" lang="haskell"><span class="n" style="color: #333;">filterAssignments</span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">live</span> <span class="n" style="color: #333;">assigs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">reverse</span> <span class="p">(</span><span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">assigs</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC279" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span> <span class="n" style="color: #333;">go</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span> <span class="n" style="color: #333;">kept</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">kept</span></span>
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<pre style="margin: 0;"> <span id="LC280" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="n" style="color: #333;">r</span><span class="p">,</span><span class="kr" style="font-weight: 600;">_</span><span class="p">,</span><span class="kr" style="font-weight: 600;">_</span><span class="p">)</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">as</span><span class="p">)</span> <span class="n" style="color: #333;">kept</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">needed</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">as</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;">kept</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC281" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">as</span> <span class="n" style="color: #333;">kept</span></span>
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<pre style="margin: 0;"> <span id="LC282" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">-<span id="LC297" class="line" lang="haskell"> <span class="n" style="color: #333;">needed</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">r</span> <span class="p">`</span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Set</span></span><span class="o" style="font-weight: 600;"><span class="idiff">.</span></span><span class="n" style="color: #333;"><span class="idiff right">member</span></span><span class="p">`</span> <span class="n" style="color: #333;">live</span></span>
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<pre style="margin: 0;">+<span id="LC283" class="line" lang="haskell"> <span class="n" style="color: #333;">needed</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">r</span> <span class="p">`</span><span class="n" style="color: #333;"><span class="idiff left right">elemLRegSet</span></span><span class="p">`</span> <span class="n" style="color: #333;">live</span></span>
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<pre style="margin: 0;"> <span id="LC284" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">||</span> <span class="n" style="color: #333;">any</span> <span class="p">(</span><span class="n" style="color: #333;">conflicts</span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="p">(</span><span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">toNode</span> <span class="n" style="color: #333;">kept</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC285" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Note that we must keep assignments that are</span></span>
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<pre style="margin: 0;"> <span id="LC286" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- referred to by other assignments we have</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">@@ -315,7 +301,7 @@ filterAssignments platform live assigs = reverse (go assigs [])</td>
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<pre style="margin: 0;"> <span id="LC301" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;"> <span id="LC302" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC303" class="line" lang="haskell"><span class="n" style="color: #333;">walk</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Platform</span></span>
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<pre style="margin: 0;">-<span id="LC318" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">L<span class="idiff left right">ocal</span>RegSet</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">CmmNode</span> <span class="kt" style="color: #458; font-weight: 600;">O</span> <span class="kt" style="color: #458; font-weight: 600;">O</span><span class="p">)]</span> <span class="c1" style="color: #998; font-style: italic;">-- nodes of the block, annotated with</span></span>
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<pre style="margin: 0;">+<span id="LC304" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">LRegSet</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">CmmNode</span> <span class="kt" style="color: #458; font-weight: 600;">O</span> <span class="kt" style="color: #458; font-weight: 600;">O</span><span class="p">)]</span> <span class="c1" style="color: #998; font-style: italic;">-- nodes of the block, annotated with</span></span>
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<pre style="margin: 0;"> <span id="LC305" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- the set of registers live *after*</span></span>
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<pre style="margin: 0;"> <span id="LC306" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- this node.</span></span>
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<pre style="margin: 0;"> <span id="LC307" 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">@@ -369,11 +355,11 @@ shouldSink _ _other = Nothing</td>
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<pre style="margin: 0;"> <span id="LC355" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- out of inlining, but the inliner will see that r is live</span></span>
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370
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356
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<pre style="margin: 0;"> <span id="LC356" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- after the instruction and choose not to inline r in the rhs.</span></span>
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<pre style="margin: 0;"> <span id="LC357" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;">-<span id="LC372" class="line" lang="haskell"><span class="n" style="color: #333;">shouldDiscard</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CmmNode</span> <span class="n" style="color: #333;">e</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">L<span class="idiff left right">ocal</span>RegSet</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="LC358" class="line" lang="haskell"><span class="n" style="color: #333;">shouldDiscard</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CmmNode</span> <span class="n" style="color: #333;">e</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</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="LC359" class="line" lang="haskell"><span class="n" style="color: #333;">shouldDiscard</span> <span class="n" style="color: #333;">node</span> <span class="n" style="color: #333;">live</span></span>
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<pre style="margin: 0;"> <span id="LC360" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">node</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;"> <span id="LC361" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">CmmAssign</span> <span class="n" style="color: #333;">r</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CmmReg</span> <span class="n" style="color: #333;">r'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">r</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">r'</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
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<pre style="margin: 0;">-<span id="LC376" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">CmmAssign</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CmmLocal</span> <span class="n" style="color: #333;">r</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">not</span> <span class="p">(</span><span class="n" style="color: #333;">r</span> <span class="p">`</span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">Set</span></span><span class="o" style="font-weight: 600;"><span class="idiff">.</span></span><span class="n" style="color: #333;"><span class="idiff right">member</span></span><span class="p">`</span> <span class="n" style="color: #333;">live</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC362" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">CmmAssign</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CmmLocal</span> <span class="n" style="color: #333;">r</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">not</span> <span class="p">(</span><span class="n" style="color: #333;">r</span> <span class="p">`</span><span class="n" style="color: #333;"><span class="idiff left right">elemLRegSet</span></span><span class="p">`</span> <span class="n" style="color: #333;">live</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC363" class="line" lang="haskell"> <span class="n" style="color: #333;">_otherwise</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
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<pre style="margin: 0;"> <span id="LC364" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC365" 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">@@ -407,7 +393,8 @@ dropAssignments platform should_drop state assigs</td>
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<pre style="margin: 0;"> <span id="LC393" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC394" class="line" lang="haskell"><span class="n" style="color: #333;">tryToInline</span></span>
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<pre style="margin: 0;"> <span id="LC395" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">x</span><span class="o" style="font-weight: 600;">.</span> <span class="kt" style="color: #458; font-weight: 600;">Platform</span></span>
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<pre style="margin: 0;">-<span id="LC410" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LocalRegSet</span> <span class="c1" style="color: #998; font-style: italic;">-- set of registers live after this</span></span>
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<pre style="margin: 0;">+<span id="LC396" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</span> <span class="c1" style="color: #998; font-style: italic;">-- set of registers live after this</span></span>
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<pre style="margin: 0;">+<span id="LC397" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- -> LocalRegSet -- set of registers live after this</span></span>
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<pre style="margin: 0;"> <span id="LC398" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- node. We cannot inline anything</span></span>
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<pre style="margin: 0;"> <span id="LC399" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- that is live after the node, unless</span></span>
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<pre style="margin: 0;"> <span id="LC400" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- it is small enough to duplicate.</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">@@ -418,36 +405,42 @@ tryToInline</td>
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<pre style="margin: 0;"> <span id="LC405" class="line" lang="haskell"> <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Assignments</span> <span class="c1" style="color: #998; font-style: italic;">-- Remaining assignments</span></span>
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406
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<pre style="margin: 0;"> <span id="LC406" class="line" lang="haskell"> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC407" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC421" class="line" lang="haskell"><span class="n" style="color: #333;">tryToInline</span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">live</span> <span class="n" style="color: #333;">node</span> <span class="n" style="color: #333;">assigs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">usages</span> <span class="n" style="color: #333;">node</span> <span class="n" style="color: #333;">emptyLRegSet</span> <span class="n" style="color: #333;">assigs</span></span>
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<pre style="margin: 0;">+<span id="LC408" class="line" lang="haskell"><span class="n" style="color: #333;">tryToInline</span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">liveAfter</span> <span class="n" style="color: #333;">node</span> <span class="n" style="color: #333;">assigs</span> <span class="o" style="font-weight: 600;">=</span></span>
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<pre style="margin: 0;">+<span id="LC409" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- pprTrace "tryToInline assig length:" (ppr $ length assigs) $</span></span>
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<pre style="margin: 0;">+<span id="LC410" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">usages</span> <span class="n" style="color: #333;">liveAfter</span> <span class="n" style="color: #333;">node</span> <span class="n" style="color: #333;">emptyLRegSet</span> <span class="n" style="color: #333;">assigs</span></span>
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<pre style="margin: 0;"> <span id="LC411" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;"> <span id="LC412" class="line" lang="haskell"> <span class="n" style="color: #333;">usages</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">UniqFM</span> <span class="kt" style="color: #458; font-weight: 600;">LocalReg</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span> <span class="c1" style="color: #998; font-style: italic;">-- Maps each LocalReg to a count of how often it is used</span></span>
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<pre style="margin: 0;"> <span id="LC413" class="line" lang="haskell"> <span class="n" style="color: #333;">usages</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldLocalRegsUsed</span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">addUsage</span> <span class="n" style="color: #333;">emptyUFM</span> <span class="n" style="color: #333;">node</span></span>
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<pre style="margin: 0;"> <span id="LC414" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC426" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">_usages</span> <span class="n" style="color: #333;">node</span> <span class="n" style="color: #333;">_skipped</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">node</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC415" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">UniqFM</span> <span class="kt" style="color: #458; font-weight: 600;">LocalReg</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;">LRegSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">CmmNode</span> <span class="kt" style="color: #458; font-weight: 600;">O</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LRegSet</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Assignments</span></span>
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<pre style="margin: 0;">+<span id="LC416" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CmmNode</span> <span class="kt" style="color: #458; font-weight: 600;">O</span> <span class="n" style="color: #333;">x</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Assignments</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC417" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">_usages</span> <span class="n" style="color: #333;">_live</span> <span class="n" style="color: #333;">node</span> <span class="n" style="color: #333;">_skipped</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">node</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC418" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC428" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">usages</span> <span class="n" style="color: #333;">node</span> <span class="n" style="color: #333;">skipped</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="n" style="color: #333;">l</span><span class="p">,</span><span class="n" style="color: #333;">rhs</span><span class="p">,</span><span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">rest</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC429" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">cannot_inline</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dont_inline</span></span>
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<pre style="margin: 0;">-<span id="LC430" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">occurs_none</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">discard</span> <span class="c1" style="color: #998; font-style: italic;">-- Note [discard during inlining]</span></span>
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<pre style="margin: 0;">-<span id="LC431" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">occurs_once</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">inline_and_discard</span></span>
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432
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<pre style="margin: 0;">-<span id="LC432" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isTrivial</span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">rhs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">inline_and_keep</span></span>
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433
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<pre style="margin: 0;">-<span id="LC433" 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;">dont_inline</span></span>
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419
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<pre style="margin: 0;">+<span id="LC419" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">usages</span> <span class="n" style="color: #333;"><span class="idiff left">live</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">node</span> <span class="n" style="color: #333;">skipped</span> <span class="p">(</span><span class="n" style="color: #333;">a</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="n" style="color: #333;">l</span><span class="p">,</span><span class="n" style="color: #333;">rhs</span><span class="p">,</span><span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="o" style="font-weight: 600;">:</span> <span class="n" style="color: #333;">rest</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC420" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">cannot_inline</span> <span class="idiff left right"> </span><span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dont_inline</span></span>
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<pre style="margin: 0;">+<span id="LC421" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">occurs_none</span> <span class="idiff left right"> </span><span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">discard</span> <span class="c1" style="color: #998; font-style: italic;">-- Note [discard during inlining]</span></span>
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<pre style="margin: 0;">+<span id="LC422" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">occurs_once</span> <span class="idiff left right"> </span><span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">inline_and_discard</span></span>
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<pre style="margin: 0;">+<span id="LC423" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isTrivial</span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">rhs</span> <span class="idiff left right"> </span><span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">inline_and_keep</span></span>
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<pre style="margin: 0;">+<span id="LC424" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="idiff left right"> </span><span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dont_inline</span></span>
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<pre style="margin: 0;"> <span id="LC425" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">-<span id="LC435" class="line" lang="haskell"> <span class="n" style="color: #333;">inline_and_discard</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">usages'</span> <span class="n" style="color: #333;">inl_node</span> <span class="n" style="color: #333;">skipped</span> <span class="n" style="color: #333;">rest</span></span>
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<pre style="margin: 0;">+<span id="LC426" class="line" lang="haskell"> <span class="n" style="color: #333;">inline_and_discard</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">usages'</span> <span class="n" style="color: #333;"><span class="idiff left">live</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">inl_node</span> <span class="n" style="color: #333;">skipped</span> <span class="n" style="color: #333;">rest</span></span>
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<pre style="margin: 0;"> <span id="LC427" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span> <span class="n" style="color: #333;">usages'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldLocalRegsUsed</span> <span class="n" style="color: #333;">platform</span> <span class="n" style="color: #333;">addUsage</span> <span class="n" style="color: #333;">usages</span> <span class="n" style="color: #333;">rhs</span></span>
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<pre style="margin: 0;"> <span id="LC428" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC438" class="line" lang="haskell"> <span class="n" style="color: #333;">discard</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">usages</span> <span class="n" style="color: #333;">node</span> <span class="n" style="color: #333;">skipped</span> <span class="n" style="color: #333;">rest</span></span>
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<pre style="margin: 0;">+<span id="LC429" class="line" lang="haskell"> <span class="n" style="color: #333;">discard</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">usages</span> <span class="n" style="color: #333;"><span class="idiff left">live</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">node</span> <span class="n" style="color: #333;">skipped</span> <span class="n" style="color: #333;">rest</span></span>
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<pre style="margin: 0;"> <span id="LC430" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC431" class="line" lang="haskell"> <span class="n" style="color: #333;">dont_inline</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">keep</span> <span class="n" style="color: #333;">node</span> <span class="c1" style="color: #998; font-style: italic;">-- don't inline the assignment, keep it</span></span>
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<pre style="margin: 0;"> <span id="LC432" class="line" lang="haskell"> <span class="n" style="color: #333;">inline_and_keep</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">keep</span> <span class="n" style="color: #333;">inl_node</span> <span class="c1" style="color: #998; font-style: italic;">-- inline the assignment, keep it</span></span>
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<pre style="margin: 0;"> <span id="LC433" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC434" class="line" lang="haskell"> <span class="n" style="color: #333;">keep</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CmmNode</span> <span class="kt" style="color: #458; font-weight: 600;">O</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CmmNode</span> <span class="kt" style="color: #458; font-weight: 600;">O</span> <span class="n" style="color: #333;">x</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Assignments</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC435" class="line" lang="haskell"> <span class="n" style="color: #333;">keep</span> <span class="n" style="color: #333;">node'</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">final_node</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;">rest'</span><span class="p">)</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 class="p">(</span><span class="n" style="color: #333;">final_node</span><span class="p">,</span> <span class="n" style="color: #333;">rest'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">usages'</span> <span class="n" style="color: #333;">node'</span> <span class="p">(</span><span class="n" style="color: #333;">insertLRegSet</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">skipped</span><span class="p">)</span> <span class="n" style="color: #333;">rest</span></span>
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<pre style="margin: 0;">+<span id="LC436" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span> <span class="p">(</span><span class="n" style="color: #333;">final_node</span><span class="p">,</span> <span class="n" style="color: #333;">rest'</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">usages</span><span class="idiff left"> </span><span class="n" style="color: #333;"><span class="idiff right">live</span>'</span> <span class="n" style="color: #333;">node'</span> <span class="p">(</span><span class="n" style="color: #333;">insertLRegSet</span> <span class="n" style="color: #333;">l</span> <span class="n" style="color: #333;">skipped</span><span class="p">)</span> <span class="n" style="color: #333;">rest</span></span>
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<pre style="margin: 0;"> <span id="LC437" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC438" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Avoid discarding of assignments to vars on the rhs.</span></span>
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<pre style="margin: 0;"> <span id="LC439" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Keeping assignemnts mentioned in skipped RHSs]</span></span>
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<pre style="margin: 0;">-<span id="LC449" class="line" lang="haskell"> <span class="n" style="color: #333;">usages'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldLocalRegsUsed</span> <span class="n" style="color: #333;">platform</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="n" style="color: #333;">r</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">addToUFM</span> <span class="n" style="color: #333;">m</span> <span class="n" style="color: #333;">r</span> <span class="mi" style="color: #099;">2</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC450" class="line" lang="haskell"> <span class="n" style="color: #333;">usages</span> <span class="n" style="color: #333;">rhs</span></span>
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<pre style="margin: 0;">+<span id="LC440" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- usages' = foldLocalRegsUsed platform (\m r -> addToUFM m r 2)</span></span>
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<pre style="margin: 0;">+<span id="LC441" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- usages rhs</span></span>
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<pre style="margin: 0;">+<span id="LC442" class="line" lang="haskell"> <span class="n" style="color: #333;">live'</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">inline</span> <span class="n" style="color: #333;">foldLocalRegsUsed</span> <span class="n" style="color: #333;">platform</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="n" style="color: #333;">r</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">insertLRegSet</span> <span class="n" style="color: #333;">r</span> <span class="n" style="color: #333;">m</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC443" class="line" lang="haskell"> <span class="n" style="color: #333;">live</span> <span class="n" style="color: #333;">rhs</span></span>
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<pre style="margin: 0;"> <span id="LC444" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC445" class="line" lang="haskell"> <span class="n" style="color: #333;">cannot_inline</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">skipped</span> <span class="p">`</span><span class="n" style="color: #333;">regsUsedIn</span><span class="p">`</span> <span class="n" style="color: #333;">rhs</span> <span class="c1" style="color: #998; font-style: italic;">-- Note [dependent assignments]</span></span>
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<pre style="margin: 0;"> <span id="LC446" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">||</span> <span class="n" style="color: #333;">l</span> <span class="p">`</span><span class="n" style="color: #333;">elemLRegSet</span><span class="p">`</span> <span class="n" style="color: #333;">skipped</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">@@ -455,7 +448,7 @@ tryToInline platform live node assigs = go usages node emptyLRegSet assigs</td>
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<pre style="margin: 0;"> <span id="LC448" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC449" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- How often is l used in the current node.</span></span>
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<pre style="margin: 0;"> <span id="LC450" class="line" lang="haskell"> <span class="n" style="color: #333;">l_usages</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">lookupUFM</span> <span class="n" style="color: #333;">usages</span> <span class="n" style="color: #333;">l</span></span>
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<pre style="margin: 0;">-<span id="LC458" class="line" lang="haskell"> <span class="n" style="color: #333;">l_live</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">l</span> <span class="p">`</span><span class="n" style="color: #333;">elemRegSet</span><span class="p">`</span> <span class="n" style="color: #333;">live</span></span>
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<pre style="margin: 0;">+<span id="LC451" class="line" lang="haskell"> <span class="n" style="color: #333;">l_live</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">l</span> <span class="p">`</span><span class="n" style="color: #333;">elem<span class="idiff left right">L</span>RegSet</span><span class="p">`</span> <span class="n" style="color: #333;">live</span></span>
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459
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<pre style="margin: 0;"> <span id="LC452" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC453" class="line" lang="haskell"> <span class="n" style="color: #333;">occurs_once</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">not</span> <span class="n" style="color: #333;">l_live</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">l_usages</span> <span class="o" style="font-weight: 600;">==</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="mi" style="color: #099;">1</span></span>
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461
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<pre style="margin: 0;"> <span id="LC454" class="line" lang="haskell"> <span class="n" style="color: #333;">occurs_none</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">not</span> <span class="n" style="color: #333;">l_live</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">l_usages</span> <span class="o" style="font-weight: 600;">==</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -483,9 +476,11 @@ tryToInline platform live node assigs = go usages node emptyLRegSet assigs</td>
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<pre style="margin: 0;"> <span id="LC476" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> referencing a variable which hasn't been mentioned after</span></span>
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477
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<pre style="margin: 0;"> <span id="LC477" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> inlining.</span></span>
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478
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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="LC486" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> We use a hack to do this, which is setting all regs used on the</span></span>
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<pre style="margin: 0;">-<span id="LC487" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> RHS to two uses. Since we only discard assignments to variables</span></span>
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<pre style="margin: 0;">-<span id="LC488" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> which are used once or never this prevents discarding of the</span></span>
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<pre style="margin: 0;">+<span id="LC479" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> We use a hack to do this.</span></span>
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<pre style="margin: 0;">+<span id="LC480" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC481" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> We pretend the regs from the rhs are live after the current</span></span>
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<pre style="margin: 0;">+<span id="LC482" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> node. Since we only discard assignments to variables</span></span>
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<pre style="margin: 0;">+<span id="LC483" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> which are dead after the current block this prevents discarding of the</span></span>
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<pre style="margin: 0;"> <span id="LC484" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> assignment. It still allows inlining should e1 be a trivial rhs</span></span>
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<pre style="margin: 0;"> <span id="LC485" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> however.</span></span>
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<pre style="margin: 0;"> <span id="LC486" class="line" lang="haskell"></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/598bec4c7f6339a9f3d8f3b616d76cff29422c32#d3cf57b6a5ebc234dc7689db38ef9b6cf2259c0f"><strong>compiler/GHC/Utils/Outputable.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">@@ -112,6 +112,7 @@ import Data.Int</td>
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112
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112
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<pre style="margin: 0;"> <span id="LC112" 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.IntMap</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">IM</span></span>
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113
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113
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<pre style="margin: 0;"> <span id="LC113" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Set</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Set</span><span class="p">)</span></span>
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114
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114
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<pre style="margin: 0;"> <span id="LC114" 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.Set</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">Set</span></span>
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115
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<pre style="margin: 0;">+<span id="LC115" 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.IntSet</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">IntSet</span></span>
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115
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116
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<pre style="margin: 0;"> <span id="LC116" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.String</span></span>
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117
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<pre style="margin: 0;"> <span id="LC117" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Word</span></span>
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118
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<pre style="margin: 0;"> <span id="LC118" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">System.IO</span> <span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">Handle</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">@@ -859,6 +860,9 @@ instance (Outputable a) => Outputable (NonEmpty a) where</td>
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859
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860
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<pre style="margin: 0;"> <span id="LC860" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Outputable</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">Outputable</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Set</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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860
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861
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<pre style="margin: 0;"> <span id="LC861" class="line" lang="haskell"> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">braces</span> <span class="p">(</span><span class="n" style="color: #333;">fsep</span> <span class="p">(</span><span class="n" style="color: #333;">punctuate</span> <span class="n" style="color: #333;">comma</span> <span class="p">(</span><span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Set</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">toList</span> <span class="n" style="color: #333;">s</span><span class="p">))))</span></span>
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861
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862
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<pre style="margin: 0;"> <span id="LC862" class="line" lang="haskell"></span>
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863
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<pre style="margin: 0;">+<span id="LC863" 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;">IntSet</span><span class="o" style="font-weight: 600;">.</span><span class="kt" style="color: #458; font-weight: 600;">IntSet</span> <span class="kr" style="font-weight: 600;">where</span></span>
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864
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<pre style="margin: 0;">+<span id="LC864" class="line" lang="haskell"> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">s</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">braces</span> <span class="p">(</span><span class="n" style="color: #333;">fsep</span> <span class="p">(</span><span class="n" style="color: #333;">punctuate</span> <span class="n" style="color: #333;">comma</span> <span class="p">(</span><span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IntSet</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">toList</span> <span class="n" style="color: #333;">s</span><span class="p">))))</span></span>
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865
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<pre style="margin: 0;">+<span id="LC865" class="line" lang="haskell"></span>
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862
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866
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<pre style="margin: 0;"> <span id="LC866" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">instance</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Outputable</span> <span class="n" style="color: #333;">a</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Outputable</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;">Outputable</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 class="kr" style="font-weight: 600;">where</span></span>
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863
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867
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<pre style="margin: 0;"> <span id="LC867" class="line" lang="haskell"> <span class="n" style="color: #333;">ppr</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 class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">parens</span> <span class="p">(</span><span class="n" style="color: #333;">sep</span> <span class="p">[</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">x</span> <span class="o" style="font-weight: 600;"><></span> <span class="n" style="color: #333;">comma</span><span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">y</span><span class="p">])</span></span>
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868
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<pre style="margin: 0;"> <span id="LC868" 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">@@ -204,6 +204,7 @@ Library</td>
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<td class="diff-line-num old_line" data-linenumber="204" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC204" class="line" lang="plaintext"> GHC.Cmm.Switch</span>
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<pre style="margin: 0;"> <span id="LC205" class="line" lang="plaintext"> GHC.Cmm.Switch.Implement</span>
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<pre style="margin: 0;"> <span id="LC206" class="line" lang="plaintext"> GHC.CmmToAsm</span>
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<pre style="margin: 0;">+<span id="LC207" class="line" lang="plaintext"> GHC.Cmm.LRegSet</span>
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<pre style="margin: 0;"> <span id="LC208" class="line" lang="plaintext"> GHC.CmmToAsm.BlockLayout</span>
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<pre style="margin: 0;"> <span id="LC209" class="line" lang="plaintext"> GHC.CmmToAsm.CFG</span>
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<pre style="margin: 0;"> <span id="LC210" class="line" lang="plaintext"> GHC.CmmToAsm.CFG.Dominators</span>
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