<html>
<head>
<base href="https://bugs.llvm.org/">
</head>
<body><span class="vcard"><a class="email" href="mailto:james.greenhalgh@arm.com" title="James Greenhalgh <james.greenhalgh@arm.com>"> <span class="fn">James Greenhalgh</span></a>
</span> changed
<a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [AArch64] atomicrmw on Armv8.1-a memory ordering can be changed"
href="https://bugs.llvm.org/show_bug.cgi?id=35094">bug 35094</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>INVALID
</td>
<td>---
</td>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>RESOLVED
</td>
<td>REOPENED
</td>
</tr>
<tr>
<td style="text-align:right;">CC</td>
<td>
</td>
<td>james.greenhalgh@arm.com
</td>
</tr></table>
<p>
<div>
<b><a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [AArch64] atomicrmw on Armv8.1-a memory ordering can be changed"
href="https://bugs.llvm.org/show_bug.cgi?id=35094#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_REOPENED "
title="REOPENED - [AArch64] atomicrmw on Armv8.1-a memory ordering can be changed"
href="https://bugs.llvm.org/show_bug.cgi?id=35094">bug 35094</a>
from <span class="vcard"><a class="email" href="mailto:james.greenhalgh@arm.com" title="James Greenhalgh <james.greenhalgh@arm.com>"> <span class="fn">James Greenhalgh</span></a>
</span></b>
<pre>Reopening this; the reasoning behind why this is a bug has been spelled out
recently by Will Deacon on gcc-patches recently:
<a href="https://gcc.gnu.org/ml/gcc-patches/2018-10/msg02042.html">https://gcc.gnu.org/ml/gcc-patches/2018-10/msg02042.html</a>
<a href="https://gcc.gnu.org/ml/gcc-patches/2018-10/msg02072.html">https://gcc.gnu.org/ml/gcc-patches/2018-10/msg02072.html</a>
Clang should not weaken the atomic operations beyond what C11 permits.</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>