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<h3>
Simon Peyton Jones pushed to branch wip/T18282
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/43c0ecd2d28a82f57e1430397b6ce0ff167d7278">43c0ecd2</a></strong>
<div>
<span>by Simon Peyton Jones</span>
<i>at 2020-06-03T09:23:05+01:00</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Reduce result discount in conSize
Ticket #18282 showed that the result discount given by conSize
was massively too large. This patch reduces that discount to
a constant 10, which just balances the cost of the constructor
application itself.
Note [Constructor size and result discount] elaborates, as
does the ticket #18282.
Reducing result discount reduces inlining, which affects perf. I
found that I could increase the unfoldingUseThrehold from 80 to 90 in
compensation; in combination with the result discount change I get
these overall nofib numbers:
Program Size Allocs Runtime Elapsed TotalMem
--------------------------------------------------------------------------------
boyer -0.3% +5.4% +0.7% +1.0% 0.0%
cichelli -0.3% +5.9% -9.9% -9.5% 0.0%
compress2 -0.4% +9.6% +7.2% +6.4% 0.0%
constraints -0.3% +0.2% -3.0% -3.4% 0.0%
cryptarithm2 -0.3% -3.9% -2.2% -2.4% 0.0%
gamteb -0.4% +2.5% +2.8% +2.8% 0.0%
life -0.3% -2.2% -4.7% -4.9% 0.0%
lift -0.3% -0.3% -0.8% -0.5% 0.0%
linear -0.3% -0.1% -4.1% -4.5% 0.0%
mate -0.2% +1.4% -2.2% -1.9% -14.3%
parser -0.3% -2.1% -5.4% -4.6% 0.0%
puzzle -0.3% +2.1% -6.6% -6.3% 0.0%
simple -0.4% +2.8% -3.4% -3.3% -2.2%
veritas -0.1% +0.7% -0.6% -1.1% 0.0%
wheel-sieve2 -0.3% -19.2% -24.9% -24.5% -42.9%
--------------------------------------------------------------------------------
Min -0.4% -19.2% -24.9% -24.5% -42.9%
Max +0.1% +9.6% +7.2% +6.4% +33.3%
Geometric Mean -0.3% -0.0% -3.0% -2.9% -0.3%
I'm ok with these numbers, remembering that this change removes
an *exponential* increase in code size in some in-the-wild cases.
I investigated compress2. The difference is entirely caused by this
function no longer inlining
WriteRoutines.$woutputCodes
= \ (w :: [CodeEvent]) ->
let result_s1Sr
= case WriteRoutines.outputCodes_$s$woutput w 0# 0# 8# 9# of
(# ww1, ww2 #) -> (ww1, ww2)
in (# case result_s1Sr of (x, _) ->
map @Int @Char WriteRoutines.outputCodes1 x
, case result_s1Sr of { (_, y) -> y } #)
It was right on the cusp before, driven by the excessive result
discount. Too bad!
</pre>
</li>
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<h4>4 changed files:</h4>
<ul>
<li class="file-stats">
<a href="#2811a7297b8aa206197ac1f5dabd0818e3c7ec5a">
compiler/GHC/Core/Unfold.hs
</a>
</li>
<li class="file-stats">
<a href="#774d88050336ef660c7a219fb06c480c2fc639bc">
compiler/GHC/Driver/Session.hs
</a>
</li>
<li class="file-stats">
<a href="#ec1e5d16b27c7ff3995d36d70de8719cad4fc9e6">
<span class="new-file">
+
testsuite/tests/perf/compiler/T18282.hs
</span>
</a>
</li>
<li class="file-stats">
<a href="#fd4a0b65d74153aed8b33b01a04eb3ff7442cd45">
testsuite/tests/perf/compiler/all.T
</a>
</li>
</ul>
<h4>Changes:</h4>
<li id="2811a7297b8aa206197ac1f5dabd0818e3c7ec5a">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/43c0ecd2d28a82f57e1430397b6ce0ff167d7278#2811a7297b8aa206197ac1f5dabd0818e3c7ec5a"><strong>compiler/GHC/Core/Unfold.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -871,16 +871,13 @@ conSize dc n_val_args</td>
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<pre style="margin: 0;"> <span id="LC871" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">n_val_args</span> <span class="o" style="font-weight: 600;">==</span> <span class="mi" style="color: #099;">0</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">SizeIs</span> <span class="mi" style="color: #099;">0</span> <span class="n" style="color: #333;">emptyBag</span> <span class="mi" style="color: #099;">10</span> <span class="c1" style="color: #998; font-style: italic;">-- Like variables</span></span>
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<pre style="margin: 0;"> <span id="LC872" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC873" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Unboxed tuple size and result discount]</span></span>
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<pre style="margin: 0;">-<span id="LC874" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isUnboxedTupleCon</span> <span class="n" style="color: #333;">dc</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">SizeIs</span> <span class="mi" style="color: #099;">0</span> <span class="n" style="color: #333;">emptyBag</span> <span class="p"><span class="idiff left">(</span></span><span class="mi" style="color: #099;"><span class="idiff">10</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="mi" style="color: #099;"><span class="idiff">1</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">n_val_args</span></span><span class="p"><span class="idiff right">))</span></span></span>
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<pre style="margin: 0;">+<span id="LC874" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isUnboxedTupleCon</span> <span class="n" style="color: #333;">dc</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">SizeIs</span> <span class="mi" style="color: #099;">0</span> <span class="n" style="color: #333;">emptyBag</span> <span class="mi" style="color: #099;"><span class="idiff left right">10</span></span></span>
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<pre style="margin: 0;"> <span id="LC875" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC876" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Constructor size and result discount]</span></span>
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<pre style="margin: 0;">-<span id="LC877" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">SizeIs</span> <span class="mi" style="color: #099;">10</span> <span class="n" style="color: #333;">emptyBag</span> <span class="p"><span class="idiff left">(</span></span><span class="mi" style="color: #099;"><span class="idiff">10</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="mi" style="color: #099;"><span class="idiff">1</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">n_val_args</span></span><span class="p"><span class="idiff right">))</span></span></span>
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<pre style="margin: 0;">+<span id="LC877" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">SizeIs</span> <span class="mi" style="color: #099;">10</span> <span class="n" style="color: #333;">emptyBag</span> <span class="mi" style="color: #099;"><span class="idiff left right">10</span></span></span>
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<pre style="margin: 0;"> <span id="LC878" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC879" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- XXX still looks to large to me</span></span>
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<pre style="margin: 0;">-<span id="LC880" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC881" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{-</span></span>
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<pre style="margin: 0;">-<span id="LC882" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [Constructor size and result discount]</span></span>
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<pre style="margin: 0;">-<span id="LC883" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>
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<pre style="margin: 0;">+<span id="LC879" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- Note [Constructor size and result discount]</span></span>
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<pre style="margin: 0;">+<span id="LC880" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>
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<pre style="margin: 0;"> <span id="LC881" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Treat a constructors application as size 10, regardless of how many</span></span>
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<pre style="margin: 0;"> <span id="LC882" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">arguments it has; we are keen to expose them (and we charge separately</span></span>
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<pre style="margin: 0;"> <span id="LC883" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">for their args). We can't treat them as size zero, else we find that</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">@@ -891,14 +888,32 @@ The "result discount" is applied if the result of the call is</td>
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<pre style="margin: 0;"> <span id="LC888" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">scrutinised (say by a case). For a constructor application that will</span></span>
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<pre style="margin: 0;"> <span id="LC889" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">mean the constructor application will disappear, so we don't need to</span></span>
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<pre style="margin: 0;"> <span id="LC890" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">charge it to the function. So the discount should at least match the</span></span>
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<pre style="margin: 0;">-<span id="LC894" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">cost of the constructor application, namely 10. But to give a bit</span></span>
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<pre style="margin: 0;">-<span id="LC895" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">of extra incentive we give a discount of 10*(1 + n_val_args).</span></span>
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<pre style="margin: 0;">-<span id="LC896" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC897" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Simon M tried a MUCH bigger discount: (10 * (10 + n_val_args)),</span></span>
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<pre style="margin: 0;">-<span id="LC898" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">and said it was an "unambiguous win", but its terribly dangerous</span></span>
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<pre style="margin: 0;">-<span id="LC899" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">because a function with many many case branches, each finishing with</span></span>
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<pre style="margin: 0;">-<span id="LC900" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">a constructor, can have an arbitrarily large discount. This led to</span></span>
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<pre style="margin: 0;">-<span id="LC901" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">terrible code bloat: see #6099.</span></span>
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<pre style="margin: 0;">+<span id="LC891" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">cost of the constructor application, namely 10.</span></span>
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<pre style="margin: 0;">+<span id="LC892" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC893" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Historical note 1: Until Jun 2020 we gave it a "bit of extra</span></span>
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<pre style="margin: 0;">+<span id="LC894" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">incentive" via a discount of 10*(1 + n_val_args), but that was FAR too</span></span>
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<pre style="margin: 0;">+<span id="LC895" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">much (#18282). In particular, consider a huge case tree like</span></span>
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<pre style="margin: 0;">+<span id="LC896" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC897" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> let r = case y1 of</span></span>
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<pre style="margin: 0;">+<span id="LC898" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Nothing -> B1 a b c</span></span>
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<pre style="margin: 0;">+<span id="LC899" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Just v1 -> case y2 of</span></span>
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<pre style="margin: 0;">+<span id="LC900" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Nothing -> B1 c b a</span></span>
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<pre style="margin: 0;">+<span id="LC901" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> Just v2 -> ...</span></span>
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902
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<pre style="margin: 0;">+<span id="LC902" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC903" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">If conSize gives a cost of 10 (regardless of n_val_args) and a</span></span>
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<pre style="margin: 0;">+<span id="LC904" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">discount of 10, that'll make each alternative RHS cost zero. We</span></span>
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905
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<pre style="margin: 0;">+<span id="LC905" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">charge 10 for each case alternative (see size_up_alt). If we give a</span></span>
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<pre style="margin: 0;">+<span id="LC906" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">bigger discount (say 20) in conSize, we'll make the case expression</span></span>
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<pre style="margin: 0;">+<span id="LC907" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">cost *nothing*, and that can make a huge case tree cost nothing. This</span></span>
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<pre style="margin: 0;">+<span id="LC908" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">leads to massive, sometimes exponenial inlinings (#18282). In short,</span></span>
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909
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<pre style="margin: 0;">+<span id="LC909" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">don't give a discount that give a negative size to a sub-expression!</span></span>
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910
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<pre style="margin: 0;">+<span id="LC910" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC911" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Historical note 2: Much longer ago, Simon M tried a MUCH bigger</span></span>
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<pre style="margin: 0;">+<span id="LC912" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">discount: (10 * (10 + n_val_args)), and said it was an "unambiguous</span></span>
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913
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<pre style="margin: 0;">+<span id="LC913" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">win", but its terribly dangerous because a function with many many</span></span>
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914
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<pre style="margin: 0;">+<span id="LC914" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">case branches, each finishing with a constructor, can have an</span></span>
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<pre style="margin: 0;">+<span id="LC915" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">arbitrarily large discount. This led to terrible code bloat: see</span></span>
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916
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<pre style="margin: 0;">+<span id="LC916" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">#6099.</span></span>
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902
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917
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<pre style="margin: 0;"> <span id="LC917" class="line" lang="haskell"></span>
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918
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<pre style="margin: 0;"> <span id="LC918" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [Unboxed tuple size and result discount]</span></span>
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919
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<pre style="margin: 0;"> <span id="LC919" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -908,7 +923,7 @@ and f wasn't getting inlined.</td>
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923
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<pre style="margin: 0;"> <span id="LC923" class="line" lang="haskell"></span>
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909
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924
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<pre style="margin: 0;"> <span id="LC924" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">I tried giving unboxed tuples a *result discount* of zero (see the</span></span>
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910
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925
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<pre style="margin: 0;"> <span id="LC925" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">commented-out line). Why? When returned as a result they do not</span></span>
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<pre style="margin: 0;">-<span id="LC911" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">allocate, so maybe we don't want to charge so much for them If you</span></span>
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<pre style="margin: 0;">+<span id="LC926" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">allocate, so maybe we don't want to charge so much for them<span class="idiff left right">.</span> If you</span></span>
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<pre style="margin: 0;"> <span id="LC927" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">have a non-zero discount here, we find that workers often get inlined</span></span>
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913
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928
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<pre style="margin: 0;"> <span id="LC928" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">back into wrappers, because it look like</span></span>
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914
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929
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<pre style="margin: 0;"> <span id="LC929" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;"> f x = case $wf x of (# a,b #) -> (a,b)</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">@@ -917,6 +932,9 @@ shrank binary sizes by 0.5% it also made spectral/boyer allocate 5%</td>
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917
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<pre style="margin: 0;"> <span id="LC932" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">more. All other changes were very small. So it's not a big deal but I</span></span>
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918
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933
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<pre style="margin: 0;"> <span id="LC933" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">didn't adopt the idea.</span></span>
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919
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934
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<pre style="margin: 0;"> <span id="LC934" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC935" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">When fixing #18282 (see Note [Constructor size and result discount])</span></span>
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<pre style="margin: 0;">+<span id="LC936" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">I changed the result discount to be just 10, not 10*(1+n_val_args).</span></span>
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<pre style="margin: 0;">+<span id="LC937" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC938" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [Function and non-function discounts]</span></span>
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921
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<pre style="margin: 0;"> <span id="LC939" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>
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<pre style="margin: 0;"> <span id="LC940" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">We want a discount if the function is applied. A good example is</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/43c0ecd2d28a82f57e1430397b6ce0ff167d7278#774d88050336ef660c7a219fb06c480c2fc639bc"><strong>compiler/GHC/Driver/Session.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1422,16 +1422,21 @@ defaultDynFlags mySettings llvmConfig =</td>
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1422
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<pre style="margin: 0;"> <span id="LC1422" class="line" lang="haskell"> <span class="n" style="color: #333;">extensions</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span><span class="p">,</span></span>
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1423
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<pre style="margin: 0;"> <span id="LC1423" class="line" lang="haskell"> <span class="n" style="color: #333;">extensionFlags</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">flattenExtensionFlags</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span><span class="p">,</span></span>
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1424
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<pre style="margin: 0;"> <span id="LC1424" class="line" lang="haskell"></span>
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1425
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<pre style="margin: 0;">-<span id="LC1425" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- The ufCreationThreshold threshold must be reasonably high to</span></span>
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1426
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<pre style="margin: 0;">-<span id="LC1426" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- take account of possible discounts.</span></span>
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1427
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<pre style="margin: 0;">-<span id="LC1427" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- E.g. 450 is not enough in 'fulsom' for Interval.sqr to inline</span></span>
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1428
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<pre style="margin: 0;">-<span id="LC1428" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- into Csg.calc (The unfolding for sqr never makes it into the</span></span>
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1429
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<pre style="margin: 0;">-<span id="LC1429" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- interface file.)</span></span>
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<pre style="margin: 0;"> <span id="LC1425" class="line" lang="haskell"> <span class="n" style="color: #333;">ufCreationThreshold</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">750</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC1431" class="line" lang="haskell"> <span class="n" style="color: #333;">ufUseThreshold</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">80</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC1432" class="line" lang="haskell"> <span class="n" style="color: #333;">ufFunAppDiscount</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">60</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC1433" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Be fairly keen to inline a function if that means</span></span>
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<pre style="margin: 0;">-<span id="LC1434" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- we'll be able to pick the right method from a dictionary</span></span>
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1426
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<pre style="margin: 0;">+<span id="LC1426" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- The ufCreationThreshold threshold must be reasonably high</span></span>
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<pre style="margin: 0;">+<span id="LC1427" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- to take account of possible discounts.</span></span>
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<pre style="margin: 0;">+<span id="LC1428" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- E.g. 450 is not enough in 'fulsom' for Interval.sqr to</span></span>
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<pre style="margin: 0;">+<span id="LC1429" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- inline into Csg.calc (The unfolding for sqr never makes it</span></span>
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<pre style="margin: 0;">+<span id="LC1430" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- into the interface file.)</span></span>
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<pre style="margin: 0;">+<span id="LC1431" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC1432" class="line" lang="haskell"> <span class="n" style="color: #333;">ufUseThreshold</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">90</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC1433" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Last adjusted upwards in #18282, when I reduced</span></span>
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<pre style="margin: 0;">+<span id="LC1434" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- the result discount for constructors.</span></span>
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<pre style="margin: 0;">+<span id="LC1435" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC1436" class="line" lang="haskell"> <span class="n" style="color: #333;">ufFunAppDiscount</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">60</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC1437" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Be fairly keen to inline a function if that means</span></span>
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<pre style="margin: 0;">+<span id="LC1438" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- we'll be able to pick the right method from a dictionary</span></span>
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<pre style="margin: 0;">+<span id="LC1439" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1440" class="line" lang="haskell"> <span class="n" style="color: #333;">ufDictDiscount</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">30</span><span class="p">,</span></span>
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1436
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1441
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<pre style="margin: 0;"> <span id="LC1441" class="line" lang="haskell"> <span class="n" style="color: #333;">ufDearOp</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">40</span><span class="p">,</span></span>
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1437
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<pre style="margin: 0;"> <span id="LC1442" class="line" lang="haskell"> <span class="n" style="color: #333;">ufVeryAggressive</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">False</span><span class="p">,</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/43c0ecd2d28a82f57e1430397b6ce0ff167d7278#ec1e5d16b27c7ff3995d36d70de8719cad4fc9e6"><strong>testsuite/tests/perf/compiler/T18282.hs</strong></a>
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<pre style="margin: 0;">+<span id="LC1" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">M</span></span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">mkB2</span></span>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"> <span class="p">)</span> <span class="kr" style="font-weight: 600;">where</span></span>
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4
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC5" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Control.Monad.Reader</span></span>
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6
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<pre style="margin: 0;">+<span id="LC6" 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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7
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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"></span>
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8
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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">A1</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">A1</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">String</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">String</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">String</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">String</span><span class="p">)</span></span>
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9
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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">A2</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">A2</span> <span class="kt" style="color: #458; font-weight: 600;">A1</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">String</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">String</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">String</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">String</span><span class="p">)</span></span>
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10
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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell"> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">String</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">String</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">String</span><span class="p">)</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">String</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC11" class="line" lang="haskell"></span>
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12
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<pre style="margin: 0;">+<span id="LC12" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">B1</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">B1</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">String</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">String</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">String</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">String</span></span>
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13
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<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">B2</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">B2</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">B1</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">String</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">String</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">String</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">String</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">String</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">String</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">String</span> <span class="o" style="font-weight: 600;">!</span><span class="kt" style="color: #458; font-weight: 600;">String</span></span>
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<pre style="margin: 0;">+<span id="LC14" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- a b c d e f g h i</span></span>
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15
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<pre style="margin: 0;">+<span id="LC15" class="line" lang="haskell"></span>
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16
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<pre style="margin: 0;">+<span id="LC16" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">M</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">ReaderT</span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">String</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">String</span><span class="p">)]</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Either</span> <span class="kt" style="color: #458; font-weight: 600;">String</span><span class="p">)</span> <span class="n" style="color: #333;">a</span></span>
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17
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<pre style="margin: 0;">+<span id="LC17" class="line" lang="haskell"></span>
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18
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<pre style="margin: 0;">+<span id="LC18" class="line" lang="haskell"><span class="n" style="color: #333;">resolve</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">String</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">String</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">M</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">String</span><span class="p">)</span></span>
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<td class="diff-line-num new new_line" data-linenumber="19" 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">
19
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<pre style="margin: 0;">+<span id="LC19" class="line" lang="haskell"><span class="n" style="color: #333;">resolve</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">x</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;">pure</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">x</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC20" class="line" lang="haskell"><span class="n" style="color: #333;">resolve</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="n" style="color: #333;">v</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">asks</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">lookup</span> <span class="n" style="color: #333;">v</span></span>
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<pre style="margin: 0;">+<span id="LC21" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC22" class="line" lang="haskell"><span class="n" style="color: #333;">mkB1</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">A1</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">M</span> <span class="kt" style="color: #458; font-weight: 600;">B1</span></span>
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<pre style="margin: 0;">+<span id="LC23" class="line" lang="haskell"><span class="n" style="color: #333;">mkB1</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">A1</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">b</span> <span class="n" style="color: #333;">c</span> <span class="n" style="color: #333;">d</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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24
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<pre style="margin: 0;">+<span id="LC24" class="line" lang="haskell"> <span class="n" style="color: #333;">a'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">fromMaybe</span> <span class="s" style="color: #d14;">""</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">resolve</span> <span class="n" style="color: #333;">a</span> <span class="s" style="color: #d14;">"A"</span></span>
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25
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<pre style="margin: 0;">+<span id="LC25" class="line" lang="haskell"> <span class="n" style="color: #333;">b'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">fromMaybe</span> <span class="s" style="color: #d14;">""</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">resolve</span> <span class="n" style="color: #333;">b</span> <span class="s" style="color: #d14;">"B"</span></span>
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26
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<pre style="margin: 0;">+<span id="LC26" class="line" lang="haskell"> <span class="n" style="color: #333;">c'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">fromMaybe</span> <span class="s" style="color: #d14;">""</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">resolve</span> <span class="n" style="color: #333;">c</span> <span class="s" style="color: #d14;">"C"</span></span>
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<td class="diff-line-num new new_line" data-linenumber="27" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
27
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<pre style="margin: 0;">+<span id="LC27" class="line" lang="haskell"> <span class="n" style="color: #333;">d'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">fromMaybe</span> <span class="s" style="color: #d14;">""</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">resolve</span> <span class="n" style="color: #333;">d</span> <span class="s" style="color: #d14;">"D"</span></span>
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<pre style="margin: 0;">+<span id="LC28" class="line" lang="haskell"> <span class="n" style="color: #333;">pure</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">B1</span> <span class="n" style="color: #333;">a'</span> <span class="n" style="color: #333;">b'</span> <span class="n" style="color: #333;">c'</span> <span class="n" style="color: #333;">d'</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;">mkB2</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">A2</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">M</span> <span class="kt" style="color: #458; font-weight: 600;">B2</span></span>
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<pre style="margin: 0;">+<span id="LC31" class="line" lang="haskell"><span class="n" style="color: #333;">mkB2</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">A2</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">b</span> <span class="n" style="color: #333;">c</span> <span class="n" style="color: #333;">d</span> <span class="n" style="color: #333;">e</span> <span class="n" style="color: #333;">f</span> <span class="n" style="color: #333;">g</span> <span class="n" style="color: #333;">h</span> <span class="n" style="color: #333;">i</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span></span>
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<pre style="margin: 0;">+<span id="LC32" class="line" lang="haskell"> <span class="n" style="color: #333;">a'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">mkB1</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">+<span id="LC33" class="line" lang="haskell"> <span class="n" style="color: #333;">b'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">fromMaybe</span> <span class="s" style="color: #d14;">"db"</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">resolve</span> <span class="n" style="color: #333;">b</span> <span class="s" style="color: #d14;">"B"</span></span>
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34
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<pre style="margin: 0;">+<span id="LC34" class="line" lang="haskell"> <span class="n" style="color: #333;">c'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">fromMaybe</span> <span class="s" style="color: #d14;">"dc"</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">resolve</span> <span class="n" style="color: #333;">c</span> <span class="s" style="color: #d14;">"C"</span></span>
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35
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<pre style="margin: 0;">+<span id="LC35" class="line" lang="haskell"> <span class="n" style="color: #333;">d'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">fromMaybe</span> <span class="s" style="color: #d14;">"dd"</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">resolve</span> <span class="n" style="color: #333;">d</span> <span class="s" style="color: #d14;">"D"</span></span>
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<pre style="margin: 0;">+<span id="LC36" class="line" lang="haskell"> <span class="n" style="color: #333;">e'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">fromMaybe</span> <span class="s" style="color: #d14;">"de"</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">resolve</span> <span class="n" style="color: #333;">e</span> <span class="s" style="color: #d14;">"E"</span></span>
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37
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<pre style="margin: 0;">+<span id="LC37" class="line" lang="haskell"> <span class="n" style="color: #333;">f'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">fromMaybe</span> <span class="s" style="color: #d14;">"df"</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">resolve</span> <span class="n" style="color: #333;">f</span> <span class="s" style="color: #d14;">"F"</span></span>
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38
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<pre style="margin: 0;">+<span id="LC38" class="line" lang="haskell"> <span class="n" style="color: #333;">g'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">fromMaybe</span> <span class="s" style="color: #d14;">"dg"</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">resolve</span> <span class="n" style="color: #333;">g</span> <span class="s" style="color: #d14;">"G"</span></span>
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<pre style="margin: 0;">+<span id="LC39" class="line" lang="haskell"> <span class="n" style="color: #333;">h'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">fromMaybe</span> <span class="s" style="color: #d14;">"dh"</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">resolve</span> <span class="n" style="color: #333;">h</span> <span class="s" style="color: #d14;">"H"</span></span>
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<pre style="margin: 0;">+<span id="LC40" class="line" lang="haskell"> <span class="n" style="color: #333;">i'</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">fromMaybe</span> <span class="s" style="color: #d14;">"di"</span> <span class="o" style="font-weight: 600;"><$></span> <span class="n" style="color: #333;">resolve</span> <span class="n" style="color: #333;">i</span> <span class="s" style="color: #d14;">"I"</span></span>
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<pre style="margin: 0;">+<span id="LC41" class="line" lang="haskell"> <span class="n" style="color: #333;">pure</span> <span class="o" style="font-weight: 600;">$</span> <span class="kt" style="color: #458; font-weight: 600;">B2</span> <span class="n" style="color: #333;">a'</span> <span class="n" style="color: #333;">b'</span> <span class="n" style="color: #333;">c'</span> <span class="n" style="color: #333;">d'</span> <span class="n" style="color: #333;">e'</span> <span class="n" style="color: #333;">f'</span> <span class="n" style="color: #333;">g'</span> <span class="n" style="color: #333;">h'</span> <span class="n" style="color: #333;">i'</span></span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/43c0ecd2d28a82f57e1430397b6ce0ff167d7278#fd4a0b65d74153aed8b33b01a04eb3ff7442cd45"><strong>testsuite/tests/perf/compiler/all.T</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">@@ -355,3 +355,9 @@ test('T16190',</td>
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<pre style="margin: 0;"> <span id="LC355" class="line" lang="perl"> <span class="p">['</span><span class="s1" style="color: #d14;">T16190.hs</span><span class="p">',</span> <span class="p">'</span><span class="s1" style="color: #d14;">-v0</span><span class="p">'])</span></span>
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<pre style="margin: 0;"> <span id="LC356" class="line" lang="perl"></span>
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<pre style="margin: 0;"> <span id="LC357" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16473</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">makefile_test</span><span class="p">,</span> <span class="p">['</span><span class="s1" style="color: #d14;">T16473</span><span class="p">'])</span></span>
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<pre style="margin: 0;">+<span id="LC358" class="line" lang="perl"></span>
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<pre style="margin: 0;">+<span id="LC359" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span> <span class="p">('</span><span class="s1" style="color: #d14;">T18282</span><span class="p">',</span></span>
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<pre style="margin: 0;">+<span id="LC360" class="line" lang="perl"> <span class="p">[</span> <span class="nv" style="color: #008080;">collect_compiler_stats</span><span class="p">('</span><span class="s1" style="color: #d14;">bytes allocated</span><span class="p">',</span><span class="mi" style="color: #099;">2</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC361" class="line" lang="perl"> <span class="p">],</span></span>
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<pre style="margin: 0;">+<span id="LC362" class="line" lang="perl"> <span class="nv" style="color: #008080;">compile</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC363" class="line" lang="perl"> <span class="p">['</span><span class="s1" style="color: #d14;">-v0 -O</span><span class="p">'])</span></span></pre>
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