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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - update_llc_test_checks.py doesn't report when a common prefix has been lost"
href="https://bugs.llvm.org/show_bug.cgi?id=49189">49189</a>
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<th>Summary</th>
<td>update_llc_test_checks.py doesn't report when a common prefix has been lost
</td>
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<th>Product</th>
<td>tools
</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>Windows NT
</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>support scripts
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>llvm-dev@redking.me.uk
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<th>CC</th>
<td>greg.bedwell@sony.com, i@maskray.me, llvm-bugs@lists.llvm.org
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<p>
<div>
<pre><a href="https://reviews.llvm.org/rGf32dc6bb42fd24517289fd1e3418994daa4fec20">https://reviews.llvm.org/rGf32dc6bb42fd24517289fd1e3418994daa4fec20</a>
; RUN: llc < %s -mtriple=x86_64-- -mattr=+avx2 | FileCheck %s
--check-prefixes=AVX,AVX2
; RUN: llc < %s -mtriple=x86_64-- -mattr=+avx2,+fast-variable-shuffle |
FileCheck %s --check-prefixes=AVX,AVX2
update_llc_test_checks.py didn't report that two AVX2 runs had conflicting
checks for all their common prefixes, which meant we lost ALL test coverage.</pre>
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