<html>
<head>
<base href="https://bugs.llvm.org/">
</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 - Assertion `!isHReg(DestReg) && "Cannot move between mask and h-reg"' failed with -m32 -O0 -march=skx."
href="https://bugs.llvm.org/show_bug.cgi?id=32256">32256</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Assertion `!isHReg(DestReg) && "Cannot move between mask and h-reg"' failed with -m32 -O0 -march=skx.
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</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>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>new bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>Vsevolod.Livinskij@frtk.ru
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=18089" name="attach_18089" title="Reproducer.">attachment 18089</a> <a href="attachment.cgi?id=18089&action=edit" title="Reproducer.">[details]</a></span>
Reproducer.
-m32 -O0 -march=skx options resulted in assertion fail: `!isHReg(DestReg) &&
"Cannot move between mask and h-reg"' (same problem with knl). Everything works
fine with other optimizations levels.
Reproducer:
extern bool c;
void a() {
char b = bool(!c) && 0;
}
LLVM version:
clang version 5.0.0 (trunk 297578)
Error:
clang-5.0:
/home/vsevolod/workspace/llvm/llvm-trunk/lib/Target/X86/X86InstrInfo.cpp:6328:
unsigned int CopyToFromAsymmetricReg(unsigned int&, unsigned int&, const
llvm::X86Subtarget&): Assertion `!isHReg(DestReg) && "Cannot move between mask
and h-reg"' failed.
(........)</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>