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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - missed opt: function argument attribute propagation"
href="https://bugs.llvm.org/show_bug.cgi?id=43107">43107</a>
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<th>Summary</th>
<td>missed opt: function argument attribute propagation
</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>All
</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>Scalar Optimizations
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>gonzalobg88@gmail.com
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>See (<a href="https://llvm.godbolt.org/z/QJIvwX">https://llvm.godbolt.org/z/QJIvwX</a>). This LLVM-IR:
define void @bar(i32* %x) local_unnamed_addr #0 {
tail call void @foo(i32* %x)
ret void
}
declare void @foo(i32* noalias align 4 dereferenceable(4)) local_unnamed_addr
#0
attributes #0 = { nounwind nonlazybind }
is not optimized further by `opt`, but I'd expect the definition of `bar` to be
optimized to:
define void @bar(i32* noalias align 4 dereferenceable(4) %x) local_unnamed_addr
#0</pre>
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