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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [AArch32] vld1q_u8_x2 / vst1q_u8_x2 in loop can cause crash in 'ARM Instruction Selection'"
href="https://bugs.llvm.org/show_bug.cgi?id=50271">50271</a>
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<th>Summary</th>
<td>[AArch32] vld1q_u8_x2 / vst1q_u8_x2 in loop can cause crash in 'ARM Instruction Selection'
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>unspecified
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>Linux
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>-New Bugs
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>zingaburga+llvm@hotmail.com
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<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
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<pre>Using the ARM NEON intrinsic vld1q_u8_x2 or vst1q_u8_x2 inside a loop, with
optimization enabled, can cause the compiler to crash. (I think this also
affects x3 and x4 variants)
Seems to affect Clang 9, 10 and 11, but not 8. Probably affects Clang 12 and
trunk.
Unsure what exactly causes it, but here's an example:
<a href="https://godbolt.org/z/3dPqsnWev">https://godbolt.org/z/3dPqsnWev</a></pre>
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