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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - cfi-icall broken for available_externally functions"
href="https://bugs.llvm.org/show_bug.cgi?id=36483">36483</a>
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<th>Summary</th>
<td>cfi-icall broken for available_externally functions
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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>All
</td>
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<th>OS</th>
<td>All
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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>Interprocedural Optimizations
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>vlad@tsyrklevich.net
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<pre>A change [1] to ThinLTO to mark non-prevailing values as dead (and later drop
dead symbols) has broken how LowerTypeTests handles available_externally
functions. The LowerTypeTests pass uses liveness to determine which functions
to emit cfi-icall thunks for to avoid avoid emitting thunks for unused
functions. Because of the change in [1], available_externally functions are
marked not live and LowerTypeTests does not emit thunks for them even when they
are actually used.
[1] <a href="https://reviews.llvm.org/D42107">https://reviews.llvm.org/D42107</a></pre>
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