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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [X86] IR execution test fails with -O0 opt-level on haswell"
href="https://bugs.llvm.org/show_bug.cgi?id=34592">34592</a>
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<th>Summary</th>
<td>[X86] IR execution test fails with -O0 opt-level on haswell
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<th>Product</th>
<td>libraries
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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
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Backend: X86
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>ayman.musa@intel.com
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<pre>Created <span class=""><a href="attachment.cgi?id=19154" name="attach_19154" title="execution test that fails">attachment 19154</a> <a href="attachment.cgi?id=19154&action=edit" title="execution test that fails">[details]</a></span>
execution test that fails
Attached is an IR execution test including a chain of shufflevector and select
instructions.
The test fails when compiling with "-O0 -march=haswell" flags.
Run the following on a haswell machine to reproduce:
<span class="quote">> clang -O0 -march=haswell exec_test_fail.ll -o exec_test_fail.exe
> ./exec_test_fail.exe</span >
===============================================================================
<span class="quote">> FAIL: lane 2, expected 153, found 0</span ></pre>
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