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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Port LoopInterchange to new pass manager"
href="https://bugs.llvm.org/show_bug.cgi?id=47737">47737</a>
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<th>Summary</th>
<td>Port LoopInterchange to new pass manager
</td>
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<th>Product</th>
<td>new-bugs
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</td>
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<th>Status</th>
<td>NEW
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<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>new bugs
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>aeubanks@google.com
</td>
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<th>CC</th>
<td>alina.sbirlea@gmail.com, florian_hahn@apple.com, htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
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<th>Blocks</th>
<td>46651
</td>
</tr></table>
<p>
<div>
<pre>LoopInterchange isn't ported to the new pass manager yet.
I tried a fairly basic approach and ran into issues with LoopInterchange
requiring DependenceAnalysis. DA is a function analysis and in the NPM, loop
passes cannot eagerly run function analyses. But even if we require DA to have
been run before running LoopInterchange, we hit
Assertion failed: !Result->invalidate(IR, PA, Inv) && "Cached result cannot be
invalidated", file ../../llvm/include\llvm/IR/PassManager.h, line 823
A loop pass cannot invalidate a function analysis (see
<a href="https://reviews.llvm.org/D72893">https://reviews.llvm.org/D72893</a>).</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 - Fix all opt tests to work under NPM"
href="https://bugs.llvm.org/show_bug.cgi?id=46651">Bug 46651</a>] Fix all opt tests to work under NPM
</li>
</ul>
</div>
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