<html>
<head>
<base href="http://llvm.org/bugs/" />
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - clang produces AVX instructions when generationg code for arch that doesn't support them"
href="http://llvm.org/bugs/show_bug.cgi?id=22693">22693</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>clang produces AVX instructions when generationg code for arch that doesn't support them
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>3.5
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>LLVM Codegen
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>dmitry.petroff@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=13942" name="attach_13942" title="test case">attachment 13942</a> <a href="attachment.cgi?id=13942&action=edit" title="test case">[details]</a></span>
test case
Problem appears on 32-bit platform.
Attached file when compiled for i686 arch contains __fixunsdfdi function with
vmovd %edx,%xmm0 instruction that is clearly not valid on i686 arch.
Even when clang is invoked with -mno-avx and -mfpmath=387 options, vmovd is
still generated.
I've noticed this because of valgrind crash.
clang -march=i686 -g vg-bug.c && valgrind ./a.out 1.2 => illegal instruction
gcc -march=i686 -g vg-bug.c && valgrind ./a.out 1.2 => OK</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>