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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [NewPM] Compile time regression on SIMD"
href="https://bugs.llvm.org/show_bug.cgi?id=49102">49102</a>
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<th>Summary</th>
<td>[NewPM] Compile time regression on SIMD
</td>
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<th>Product</th>
<td>libraries
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Core LLVM classes
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>alonzakai@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=24500" name="attach_24500" title="testcase">attachment 24500</a> <a href="attachment.cgi?id=24500&action=edit" title="testcase">[details]</a></span>
testcase
The attached testcase is from test_avx in emscripten. With the old pass manager
on -O3 it took around 8 seconds to compile, but with the new pass manager it
runs for over 7 minutes (a timeout on our CI was how we noticed).
STR:
clang b.cpp -f[no-]legacy-pass-manager -msimd128 -target wasm32 -c -O3</pre>
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