<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 - ARM NEON intrinsic header <arm_neon.h> requires lax vector conversions"
href="https://bugs.llvm.org/show_bug.cgi?id=43341">43341</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>ARM NEON intrinsic header <arm_neon.h> requires lax vector conversions
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>release blocker
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Headers
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>richard-llvm@metafoo.co.uk
</td>
</tr>
<tr>
<th>CC</th>
<td>craig.topper@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
</td>
</tr></table>
<p>
<div>
<pre>#include <arm_neon.h> fails to compile with -fno-lax-vector-conversions /
-flax-vector-conversions=integer, due to reliance on implicit (bitcast)
conversions between vectors of floating point types and vectors of integer
types in code in the generated header.
I intend to soon switch Clang's default from -flax-vector-conversions=all to
-flax-vector-conversions=integer, which would break all code including that
header. (For that reason, I intend to leave the default alone when targeting
ARM NEON for now, but this would not be a reasonable state in the longer term.)</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>