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<base href="http://bugzilla.gdcproject.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - DMD -O is faster than GDC -O3 for byte and short math"
href="http://bugzilla.gdcproject.org/show_bug.cgi?id=180">180</a>
</td>
</tr>
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<th>Summary</th>
<td>DMD -O is faster than GDC -O3 for byte and short math
</td>
</tr>
<tr>
<th>Product</th>
<td>GDC
</td>
</tr>
<tr>
<th>Version</th>
<td>development
</td>
</tr>
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<th>Hardware</th>
<td>x86
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>Normal
</td>
</tr>
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<th>Component</th>
<td>gdc
</td>
</tr>
<tr>
<th>Assignee</th>
<td>ibuclaw@gdcproject.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>ketmar@ketmar.no-ip.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=84" name="attach_84" title="test case">attachment 84</a> <a href="attachment.cgi?id=84&action=edit" title="test case">[details]</a></span>
test case
using the attached test code, i got this results:
for: dmd -O -inline -release
tByte: 0.004,872 secs
tShort: 0.006,896 secs
tInt: 0.008,672 secs
tLong: 0.036,864 secs
for: gdc -march=native -O3 -frelease
tByte: 0.008,830 secs
tShort: 0.008,858 secs
tInt: 0.008,267 secs
tLong: 0.014,029 secs
seems that DMD does better with bytes and shorts, while gdc has the same speed
for bytes, shorts and ints.</pre>
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</p>
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