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<h3>
Ben Gamari pushed to branch wip/unroll-evac
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/e3f51af859dddc22ef7047e83cbdd26fb9f10d45">e3f51af8</a></strong>
<div>
<span>by Ben Gamari</span>
<i>at 2019-05-15T22:29:51Z</i>
</div>
<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Evac: Try unrolling copying
</pre>
</li>
</ul>
<h4>1 changed file:</h4>
<ul>
<li class="file-stats">
<a href="#37a93df244a7789fddf557443b6398d06763e9cc">
rts/sm/Evac.c
</a>
</li>
</ul>
<h4>Changes:</h4>
<li id="37a93df244a7789fddf557443b6398d06763e9cc">
<a href="https://gitlab.haskell.org/ghc/ghc/commit/e3f51af859dddc22ef7047e83cbdd26fb9f10d45#37a93df244a7789fddf557443b6398d06763e9cc"><strong>rts/sm/Evac.c</strong></a>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="88" 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">@@ -88,20 +88,35 @@ alloc_for_copy (uint32_t size, uint32_t gen_no)</td>
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88
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<pre style="margin: 0;"> <span id="LC88" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">   The evacuate() code</span></span>
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<td class="diff-line-num old_line" data-linenumber="89" 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="LC89" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">   -------------------------------------------------------------------------- */</span></span>
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<td class="diff-line-num old_line" data-linenumber="90" 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="LC90" class="line" lang="c"></span>
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<td class="diff-line-num new old_line" data-linenumber="91" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="91" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC91" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;">/* Manually unroll copy for small closures */</span></span>
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<pre style="margin: 0;">+<span id="LC92" class="line" lang="c"><span class="n" style="color: #333;">STATIC_INLINE</span> <span class="n" style="color: #333;">GNUC_ATTR_HOT</span> <span class="kt" style="color: #458; font-weight: 600;">void</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="91" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<pre style="margin: 0;">+<span id="LC93" class="line" lang="c"><span class="nf" style="color: #900; font-weight: 600;">copy_words</span><span class="p">(</span><span class="n" style="color: #333;">StgWord</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">from</span><span class="p">,</span> <span class="n" style="color: #333;">StgWord</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">to</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">uint32_t</span> <span class="n" style="color: #333;">n</span><span class="p">)</span></span>
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<td class="diff-line-num new new_line" data-linenumber="94" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC94" class="line" lang="c"><span class="p">{</span></span>
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<td class="diff-line-num new new_line" data-linenumber="95" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC95" class="line" lang="c">    <span class="k" style="font-weight: 600;">switch</span> <span class="p">(</span><span class="n" style="color: #333;">n</span><span class="p">)</span> <span class="p">{</span></span>
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<td class="diff-line-num new new_line" data-linenumber="96" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC96" class="line" lang="c">      <span class="k" style="font-weight: 600;">case</span> <span class="mi" style="color: #099;">7</span><span class="p">:</span> <span class="n" style="color: #333;">to</span><span class="p">[</span><span class="mi" style="color: #099;">6</span><span class="p">]</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">from</span><span class="p">[</span><span class="mi" style="color: #099;">6</span><span class="p">];</span> <span class="n" style="color: #333;">FALLTHROUGH</span><span class="p">;</span></span>
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<td class="diff-line-num new new_line" data-linenumber="97" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC97" class="line" lang="c">      <span class="k" style="font-weight: 600;">case</span> <span class="mi" style="color: #099;">6</span><span class="p">:</span> <span class="n" style="color: #333;">to</span><span class="p">[</span><span class="mi" style="color: #099;">5</span><span class="p">]</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">from</span><span class="p">[</span><span class="mi" style="color: #099;">5</span><span class="p">];</span> <span class="n" style="color: #333;">FALLTHROUGH</span><span class="p">;</span></span>
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<td class="diff-line-num new new_line" data-linenumber="98" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC98" class="line" lang="c">      <span class="k" style="font-weight: 600;">case</span> <span class="mi" style="color: #099;">5</span><span class="p">:</span> <span class="n" style="color: #333;">to</span><span class="p">[</span><span class="mi" style="color: #099;">4</span><span class="p">]</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">from</span><span class="p">[</span><span class="mi" style="color: #099;">4</span><span class="p">];</span> <span class="n" style="color: #333;">FALLTHROUGH</span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC99" class="line" lang="c">      <span class="k" style="font-weight: 600;">case</span> <span class="mi" style="color: #099;">4</span><span class="p">:</span> <span class="n" style="color: #333;">to</span><span class="p">[</span><span class="mi" style="color: #099;">3</span><span class="p">]</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">from</span><span class="p">[</span><span class="mi" style="color: #099;">3</span><span class="p">];</span> <span class="n" style="color: #333;">FALLTHROUGH</span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC100" class="line" lang="c">      <span class="k" style="font-weight: 600;">case</span> <span class="mi" style="color: #099;">3</span><span class="p">:</span> <span class="n" style="color: #333;">to</span><span class="p">[</span><span class="mi" style="color: #099;">2</span><span class="p">]</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">from</span><span class="p">[</span><span class="mi" style="color: #099;">2</span><span class="p">];</span> <span class="n" style="color: #333;">FALLTHROUGH</span><span class="p">;</span></span>
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<td class="diff-line-num new new_line" data-linenumber="101" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC101" class="line" lang="c">      <span class="k" style="font-weight: 600;">case</span> <span class="mi" style="color: #099;">2</span><span class="p">:</span> <span class="n" style="color: #333;">to</span><span class="p">[</span><span class="mi" style="color: #099;">1</span><span class="p">]</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">from</span><span class="p">[</span><span class="mi" style="color: #099;">1</span><span class="p">];</span> <span class="n" style="color: #333;">FALLTHROUGH</span><span class="p">;</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="91" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="102" 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">
102
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<pre style="margin: 0;">+<span id="LC102" class="line" lang="c">      <span class="k" style="font-weight: 600;">case</span> <span class="mi" style="color: #099;">1</span><span class="p">:</span> <span class="n" style="color: #333;">to</span><span class="p">[</span><span class="mi" style="color: #099;">0</span><span class="p">]</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">from</span><span class="p">[</span><span class="mi" style="color: #099;">0</span><span class="p">];</span> <span class="n" style="color: #333;">FALLTHROUGH</span><span class="p">;</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="91" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="103" 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">
103
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<pre style="margin: 0;">+<span id="LC103" class="line" lang="c">      <span class="k" style="font-weight: 600;">case</span> <span class="mi" style="color: #099;">0</span><span class="p">:</span> <span class="k" style="font-weight: 600;">break</span><span class="p">;</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="91" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="104" 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">
104
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<pre style="margin: 0;">+<span id="LC104" class="line" lang="c">      <span class="nl">default:</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="91" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="105" 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">
105
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<pre style="margin: 0;">+<span id="LC105" class="line" lang="c">        <span class="n" style="color: #333;">memcpy</span><span class="p">(</span><span class="n" style="color: #333;">to</span><span class="p">,</span> <span class="n" style="color: #333;">from</span><span class="p">,</span> <span class="n" style="color: #333;">count</span> <span class="o" style="font-weight: 600;">*</span> <span class="k" style="font-weight: 600;">sizeof</span><span class="p">(</span><span class="n" style="color: #333;">StgWord</span><span class="p">));</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="91" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="106" 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">
106
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<pre style="margin: 0;">+<span id="LC106" class="line" lang="c">    <span class="p">}</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="91" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="107" 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">
107
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<pre style="margin: 0;">+<span id="LC107" class="line" lang="c"><span class="p">}</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="91" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="108" 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">
108
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<pre style="margin: 0;">+<span id="LC108" class="line" lang="c"></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="91" 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">
91
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<td class="diff-line-num new_line" data-linenumber="109" 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">
109
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC109" class="line" lang="c"><span class="n" style="color: #333;">STATIC_INLINE</span> <span class="n" style="color: #333;">GNUC_ATTR_HOT</span> <span class="kt" style="color: #458; font-weight: 600;">void</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="92" 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">
92
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<td class="diff-line-num new_line" data-linenumber="110" 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">
110
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC110" class="line" lang="c"><span class="nf" style="color: #900; font-weight: 600;">copy_tag</span><span class="p">(</span><span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">**</span><span class="n" style="color: #333;">p</span><span class="p">,</span> <span class="k" style="font-weight: 600;">const</span> <span class="n" style="color: #333;">StgInfoTable</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">info</span><span class="p">,</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="93" 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">
93
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<td class="diff-line-num new_line" data-linenumber="111" 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">
111
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<pre style="margin: 0;"> <span id="LC111" class="line" lang="c">         <span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">src</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">uint32_t</span> <span class="n" style="color: #333;">size</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">uint32_t</span> <span class="n" style="color: #333;">gen_no</span><span class="p">,</span> <span class="n" style="color: #333;">StgWord</span> <span class="n" style="color: #333;">tag</span><span class="p">)</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="94" 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">
94
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<td class="diff-line-num new_line" data-linenumber="112" 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">
112
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC112" class="line" lang="c"><span class="p">{</span></span>
</pre>
</td>
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<td class="diff-line-num old_line" data-linenumber="95" 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">
95
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<td class="diff-line-num new_line" data-linenumber="113" 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">
113
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC113" class="line" lang="c">    <span class="n" style="color: #333;">StgPtr</span> <span class="n" style="color: #333;">to</span><span class="p">,</span> <span class="n" style="color: #333;">from</span><span class="p">;</span></span>
</pre>
</td>
</tr>
<tr class="line_holder old" id="" style="line-height: 1.6;">
<td class="diff-line-num old old_line" data-linenumber="96" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
96
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<td class="diff-line-num new_line old" data-linenumber="114" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">
<pre style="margin: 0;">-<span id="LC96" class="line" lang="c">    <span class="kt" style="color: #458; font-weight: 600;">uint32_t</span> <span class="n" style="color: #333;">i</span><span class="p">;</span></span>
</pre>
</td>
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<tr class="line_holder" id="" style="line-height: 1.6;">
<td class="diff-line-num old_line" data-linenumber="97" 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">
97
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<td class="diff-line-num new_line" data-linenumber="114" 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">
114
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC114" class="line" lang="c"></span>
</pre>
</td>
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<td class="diff-line-num old_line" data-linenumber="98" 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">
98
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<td class="diff-line-num new_line" data-linenumber="115" 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">
115
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC115" class="line" lang="c">    <span class="n" style="color: #333;">to</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">alloc_for_copy</span><span class="p">(</span><span class="n" style="color: #333;">size</span><span class="p">,</span><span class="n" style="color: #333;">gen_no</span><span class="p">);</span></span>
</pre>
</td>
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<td class="diff-line-num old_line" data-linenumber="99" 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">
99
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<td class="diff-line-num new_line" data-linenumber="116" 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">
116
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC116" class="line" lang="c"></span>
</pre>
</td>
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<td class="diff-line-num old_line" data-linenumber="100" 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">
100
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<td class="diff-line-num new_line" data-linenumber="117" 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">
117
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC117" class="line" lang="c">    <span class="n" style="color: #333;">from</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">StgPtr</span><span class="p">)</span><span class="n" style="color: #333;">src</span><span class="p">;</span></span>
</pre>
</td>
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<td class="diff-line-num old_line" data-linenumber="101" 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">
101
</td>
<td class="diff-line-num new_line" data-linenumber="118" 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">
118
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC118" class="line" lang="c">    <span class="n" style="color: #333;">to</span><span class="p">[</span><span class="mi" style="color: #099;">0</span><span class="p">]</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">W_</span><span class="p">)</span><span class="n" style="color: #333;">info</span><span class="p">;</span></span>
</pre>
</td>
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<tr class="line_holder old" id="" style="line-height: 1.6;">
<td class="diff-line-num old old_line" data-linenumber="102" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC102" class="line" lang="c">    <span class="k" style="font-weight: 600;">for</span> <span class="p">(</span><span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">1</span><span class="p">;</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;"><</span> <span class="n" style="color: #333;">size</span><span class="p">;</span> <span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">++</span><span class="p">)</span> <span class="p">{</span> <span class="c1" style="color: #998; font-style: italic;">// unroll for small i</span></span>
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<pre style="margin: 0;">-<span id="LC103" class="line" lang="c">        <span class="n" style="color: #333;">to</span><span class="p">[</span><span class="n" style="color: #333;">i</span><span class="p">]</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">from</span><span class="p">[</span><span class="n" style="color: #333;">i</span><span class="p">];</span></span>
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<pre style="margin: 0;">-<span id="LC104" class="line" lang="c">    <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC119" class="line" lang="c">    <span class="n" style="color: #333;">copy_words</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">from</span><span class="p">[</span><span class="mi" style="color: #099;">1</span><span class="p">],</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">to</span><span class="p">[</span><span class="mi" style="color: #099;">1</span><span class="p">],</span> <span class="n" style="color: #333;">size</span><span class="o" style="font-weight: 600;">-</span><span class="mi" style="color: #099;">1</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC120" class="line" lang="c"></span>
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<pre style="margin: 0;"> <span id="LC121" class="line" lang="c"><span class="c1" style="color: #998; font-style: italic;">//  if (to+size+2 < bd->start + BLOCK_SIZE_W) {</span></span>
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<pre style="margin: 0;"> <span id="LC122" class="line" lang="c"><span class="c1" style="color: #998; font-style: italic;">//      __builtin_prefetch(to + size + 2, 1);</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="148" 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="163" 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">@@ -148,15 +163,12 @@ copy_tag_nolock(StgClosure **p, const StgInfoTable *info,</td>
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<pre style="margin: 0;"> <span id="LC163" class="line" lang="c">         <span class="n" style="color: #333;">StgClosure</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">src</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">uint32_t</span> <span class="n" style="color: #333;">size</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">uint32_t</span> <span class="n" style="color: #333;">gen_no</span><span class="p">,</span> <span class="n" style="color: #333;">StgWord</span> <span class="n" style="color: #333;">tag</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC164" class="line" lang="c"><span class="p">{</span></span>
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<pre style="margin: 0;"> <span id="LC165" class="line" lang="c">    <span class="n" style="color: #333;">StgPtr</span> <span class="n" style="color: #333;">to</span><span class="p">,</span> <span class="n" style="color: #333;">from</span><span class="p">;</span></span>
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<pre style="margin: 0;">-<span id="LC151" class="line" lang="c">    <span class="kt" style="color: #458; font-weight: 600;">uint32_t</span> <span class="n" style="color: #333;">i</span><span class="p">;</span></span>
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<td class="diff-line-num old_line" data-linenumber="152" 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="LC166" class="line" lang="c"></span>
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<td class="diff-line-num new_line" data-linenumber="167" 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="LC167" class="line" lang="c">    <span class="n" style="color: #333;">to</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">alloc_for_copy</span><span class="p">(</span><span class="n" style="color: #333;">size</span><span class="p">,</span><span class="n" style="color: #333;">gen_no</span><span class="p">);</span></span>
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<pre style="margin: 0;"> <span id="LC168" class="line" lang="c"></span>
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<td class="diff-line-num old_line" data-linenumber="155" 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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<td class="diff-line-num new_line" data-linenumber="169" 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="LC169" class="line" lang="c">    <span class="n" style="color: #333;">from</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">StgPtr</span><span class="p">)</span><span class="n" style="color: #333;">src</span><span class="p">;</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="156" 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="LC170" class="line" lang="c">    <span class="n" style="color: #333;">to</span><span class="p">[</span><span class="mi" style="color: #099;">0</span><span class="p">]</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">W_</span><span class="p">)</span><span class="n" style="color: #333;">info</span><span class="p">;</span></span>
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<td class="diff-line-num new_line old" data-linenumber="171" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC157" class="line" lang="c">    <span class="k" style="font-weight: 600;">for</span> <span class="p">(</span><span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">1</span><span class="p">;</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;"><</span> <span class="n" style="color: #333;">size</span><span class="p">;</span> <span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">++</span><span class="p">)</span> <span class="p">{</span> <span class="c1" style="color: #998; font-style: italic;">// unroll for small i</span></span>
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158
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<td class="diff-line-num new_line old" data-linenumber="171" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC158" class="line" lang="c">        <span class="n" style="color: #333;">to</span><span class="p">[</span><span class="n" style="color: #333;">i</span><span class="p">]</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">from</span><span class="p">[</span><span class="n" style="color: #333;">i</span><span class="p">];</span></span>
</pre>
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<td class="diff-line-num old old_line" data-linenumber="159" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
159
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<td class="diff-line-num new_line old" data-linenumber="171" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC159" class="line" lang="c">    <span class="p">}</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="160" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="171" 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">
171
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<pre style="margin: 0;">+<span id="LC171" class="line" lang="c">    <span class="n" style="color: #333;">copy_words</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">from</span><span class="p">[</span><span class="mi" style="color: #099;">1</span><span class="p">],</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">to</span><span class="p">[</span><span class="mi" style="color: #099;">1</span><span class="p">],</span> <span class="n" style="color: #333;">size</span><span class="o" style="font-weight: 600;">-</span><span class="mi" style="color: #099;">1</span><span class="p">);</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="160" 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">
160
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<td class="diff-line-num new_line" data-linenumber="172" 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="LC172" class="line" lang="c"></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="161" 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">
161
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<td class="diff-line-num new_line" data-linenumber="173" 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">
173
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<pre style="margin: 0;"> <span id="LC173" class="line" lang="c">    <span class="c1" style="color: #998; font-style: italic;">// if somebody else reads the forwarding pointer, we better make</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="162" 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">
162
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<td class="diff-line-num new_line" data-linenumber="174" 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">
174
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC174" class="line" lang="c">    <span class="c1" style="color: #998; font-style: italic;">// sure there's a closure at the end of it.</span></span>
</pre>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="211" 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="223" 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">@@ -211,9 +223,7 @@ spin:</td>
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<td class="diff-line-num old_line" data-linenumber="211" 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">
211
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<td class="diff-line-num new_line" data-linenumber="223" 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">
223
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<pre style="margin: 0;"> <span id="LC223" class="line" lang="c"></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="212" 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">
212
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<td class="diff-line-num new_line" data-linenumber="224" 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">
224
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<pre style="margin: 0;"> <span id="LC224" class="line" lang="c">    <span class="n" style="color: #333;">from</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">StgPtr</span><span class="p">)</span><span class="n" style="color: #333;">src</span><span class="p">;</span></span>
</pre>
</td>
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<td class="diff-line-num old_line" data-linenumber="213" 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">
213
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<td class="diff-line-num new_line" data-linenumber="225" 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">
225
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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC225" class="line" lang="c">    <span class="n" style="color: #333;">to</span><span class="p">[</span><span class="mi" style="color: #099;">0</span><span class="p">]</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">info</span><span class="p">;</span></span>
</pre>
</td>
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<td class="diff-line-num old old_line" data-linenumber="214" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<td class="diff-line-num new_line old" data-linenumber="226" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC214" class="line" lang="c">    <span class="k" style="font-weight: 600;">for</span> <span class="p">(</span><span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">1</span><span class="p">;</span> <span class="n" style="color: #333;">i</span> <span class="o" style="font-weight: 600;"><</span> <span class="n" style="color: #333;">size_to_copy</span><span class="p">;</span> <span class="n" style="color: #333;">i</span><span class="o" style="font-weight: 600;">++</span><span class="p">)</span> <span class="p">{</span> <span class="c1" style="color: #998; font-style: italic;">// unroll for small i</span></span>
</pre>
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<td class="diff-line-num old old_line" data-linenumber="215" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
215
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<td class="diff-line-num new_line old" data-linenumber="226" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">
<pre style="margin: 0;">-<span id="LC215" class="line" lang="c">        <span class="n" style="color: #333;">to</span><span class="p">[</span><span class="n" style="color: #333;">i</span><span class="p">]</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">from</span><span class="p">[</span><span class="n" style="color: #333;">i</span><span class="p">];</span></span>
</pre>
</td>
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<td class="diff-line-num old old_line" data-linenumber="216" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<td class="diff-line-num new_line old" data-linenumber="226" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
 
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<pre style="margin: 0;">-<span id="LC216" class="line" lang="c">    <span class="p">}</span></span>
</pre>
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<td class="diff-line-num new old_line" data-linenumber="217" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
 
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<td class="diff-line-num new new_line" data-linenumber="226" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC226" class="line" lang="c">    <span class="n" style="color: #333;">copy_words</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">from</span><span class="p">[</span><span class="mi" style="color: #099;">1</span><span class="p">],</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">to</span><span class="p">[</span><span class="mi" style="color: #099;">1</span><span class="p">],</span> <span class="n" style="color: #333;">size_to_copy</span><span class="o" style="font-weight: 600;">-</span><span class="mi" style="color: #099;">1</span><span class="p">);</span></span>
</pre>
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<td class="diff-line-num old_line" data-linenumber="217" 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">
217
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<td class="diff-line-num new_line" data-linenumber="227" 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">
227
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<pre style="margin: 0;"> <span id="LC227" class="line" lang="c"></span>
</pre>
</td>
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<td class="diff-line-num old_line" data-linenumber="218" 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">
218
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<td class="diff-line-num new_line" data-linenumber="228" 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">
228
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<pre style="margin: 0;"> <span id="LC228" class="line" lang="c">    <span class="n" style="color: #333;">write_barrier</span><span class="p">();</span></span>
</pre>
</td>
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<td class="diff-line-num old_line" data-linenumber="219" 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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<td class="diff-line-num new_line" data-linenumber="229" 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">
229
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<pre style="margin: 0;"> <span id="LC229" class="line" lang="c">    <span class="n" style="color: #333;">src</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">header</span><span class="p">.</span><span class="n" style="color: #333;">info</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="k" style="font-weight: 600;">const</span> <span class="n" style="color: #333;">StgInfoTable</span><span class="o" style="font-weight: 600;">*</span><span class="p">)</span><span class="n" style="color: #333;">MK_FORWARDING_PTR</span><span class="p">(</span><span class="n" style="color: #333;">to</span><span class="p">);</span></span>
</pre>
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