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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [Attributor] Alignment assumption via @llvm.assume() not parsed"
href="https://bugs.llvm.org/show_bug.cgi?id=44314">44314</a>
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<th>Summary</th>
<td>[Attributor] Alignment assumption via @llvm.assume() not parsed
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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>Linux
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Global Analyses
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>lebedev.ri@gmail.com
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<pre><a href="https://godbolt.org/z/uDSVPq">https://godbolt.org/z/uDSVPq</a>
void* t0(void *x) {
return __builtin_assume_aligned(x, 16);
}
with -O3 -mllvm -attributor-disable=false
still results in
define dso_local i8* @t0(i8* returned %0) local_unnamed_addr #0 {
I'm pretty sure we should recognize that alignment assumption,
and annotate returned value with align=16
There's likely similar things for other assumptions (non-null-ness e.g.)
I'm not sure how involved that is, but i'd like to take a look..</pre>
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