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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Update llvm-exegesis to use libLLVMMCA to predict scheduling"
href="https://bugs.llvm.org/show_bug.cgi?id=42792">42792</a>
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<th>Summary</th>
<td>Update llvm-exegesis to use libLLVMMCA to predict scheduling
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<th>Product</th>
<td>tools
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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>Windows NT
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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>llvm-exegesis
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>llvm-dev@redking.me.uk
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<th>CC</th>
<td>andrea.dibiagio@gmail.com, clement.courbet@gmail.com, gchatelet@google.com, lebedev.ri@gmail.com, llvm-bugs@lists.llvm.org
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<pre>The scheduling modelling in
llvm\tools\llvm-exegesis\lib\SchedClassResolution.cpp should be replaced to
call the equivalent functionality in libLLVMMCA.
We shouldn't have two implemenations, and there are minor differences between
them which means that we can't easily use llvm-exegesis to confirm the model
matches the hardware's behaviour [<a class="bz_bug_link
bz_status_NEW "
title="NEW - [llvm-exegesis] Idealized Resource Pressure misinterprets ProcResGroups"
href="show_bug.cgi?id=37697">Bug #37697</a>].
This will then let us easily check the models for special predicate cases (move
idioms, dependency breakers etc.)</pre>
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