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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [X86] Scheduler models should use UnsupportedFeatures to indicate unsupported ISAs"
href="https://bugs.llvm.org/show_bug.cgi?id=37601">37601</a>
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<th>Summary</th>
<td>[X86] Scheduler models should use UnsupportedFeatures to indicate unsupported ISAs
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Windows NT
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Backend: X86
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>llvm-dev@redking.me.uk
</td>
</tr>
<tr>
<th>CC</th>
<td>andrea.dibiagio@gmail.com, clement.courbet@gmail.com, craig.topper@gmail.com, gchatelet@google.com, llvm-bugs@lists.llvm.org, spatel+llvm@rotateright.com
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<th>Blocks</th>
<td>32325
</td>
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<p>
<div>
<pre>We've mentioned this several times: [<a class="bz_bug_link
bz_status_NEW "
title="NEW - Implement the SandyBridge/Haswell machine model for x86 SSE4 and AVX."
href="show_bug.cgi?id=17367">Bug #17367</a>] [<a class="bz_bug_link
bz_status_NEW "
title="NEW - X86 Scheduling Models are incomplete"
href="show_bug.cgi?id=26792">Bug #26792</a>], [<a class="bz_bug_link
bz_status_NEW "
title="NEW - [X86] Remove Schedule classes from models that don't use them"
href="show_bug.cgi?id=35608">Bug #35608</a>]
But we still don't make use of this field to indicate unsupported ISAs and
reduce test ranges.
NOTE: We must be careful with some models are they are reused on CPUs that DO
support extra ISAs (Haswell on KnightsLanding/KnightsMill), plus SandyBridge is
used as our current 'modern Generic cpu model' so needs to touch all ISAs.</pre>
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</p>
<div id="referenced">
<hr style="border: 1px dashed #969696">
<b>Referenced Bugs:</b>
<ul>
<li>
[<a class="bz_bug_link
bz_status_NEW "
title="NEW - [META][X86] Improve implementation and use of X86 scheduler models"
href="https://bugs.llvm.org/show_bug.cgi?id=32325">Bug 32325</a>] [META][X86] Improve implementation and use of X86 scheduler models
</li>
</ul>
</div>
<br>
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