[PATCH][wwwdocs] gcc-12/changes.html: document LoongArch -m{no-,}check-zero-division default change for 12.2

[Xi Ruoyao <xry111@xry111.site>]

Document a behavior change in r12-8546.  Ok for wwwdocs?

---
 htdocs/gcc-12/changes.html | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/htdocs/gcc-12/changes.html b/htdocs/gcc-12/changes.html
index ae03c3c6..ef957204 100644
--- a/htdocs/gcc-12/changes.html
+++ b/htdocs/gcc-12/changes.html
@@ -1027,6 +1027,32 @@ known to be fixed in the 12.1 release. This list might not be
 complete (that is, it is possible that some PRs that have been fixed
 are not listed here).</p>
 
+<!-- .................................................................. -->
+<h2 id="12.2">GCC 12.2</h2>
+
+<p>Note: GCC 12.2 has not been released yet, so this section is a
+work-in-progress.</p>
+
+<p>This is the <a href="https://gcc.gnu.org/bugzilla/buglist.cgi?bug_status=RESOLVED&amp;resolution=FIXED&amp;target_milestone=12.2">list
+of problem reports (PRs)</a> from GCC's bug tracking system that are
+known to be fixed in the 12.2 release. This list might not be
+complete (that is, it is possible that some PRs that have been fixed
+are not listed here).</p>
+
+<h3>Target Specific Changes</h3>
+
+<h4>LoongArch</h4>
+
+<ul>
+  <li>
+    <a id="loongarch-check-zero-div">The default setting of</a>
+    <code>-m[check|no-check]-zero-division</code> is changed for optimized
+    code.  Now <code>-mno-check-zero-division</code> is the default for
+    all optimization levels but <code>-O0</code> and <code>-Og</code>.
+    The old behavior can be obtained by explicitly passing
+    <code>-mcheck-zero-division</code> to GCC.
+  </li>
+</ul>
 <!-- .................................................................. -->
 
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