[wwwdocs] gcc-12/changes.html: GCN - add TI mode, mention -foffload(-options)

[Tobias Burnus <tobias@codesourcery.com>]

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This documents AMD GCN's new much-more complete TI-mode
(__int128_t) support, that was as v2 just posted by Julian
and should get committed very soon.

Additionally, -foffload= (previously undocumented) has been
split into -foffload= and -foffload-options= and now has a
documentation. Hence, both flags are now in the release notes,
linking to their documentation. (Link are broken until the
next cron run.)

Comments? Concerns? Remarks?

Tobias

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gcc-12/changes.html: GCN - add TI mode, mention -foffload(-options)
diff --git a/htdocs/gcc-12/changes.html b/htdocs/gcc-12/changes.html
index b854c4e6..599443e7 100644
--- a/htdocs/gcc-12/changes.html
+++ b/htdocs/gcc-12/changes.html
@@ -62,6 +62,14 @@ a work-in-progress.</p>
       OpenACC. It warns about potentially suboptimal choices related to
       OpenACC parallelism.
   </li>
+  <li>The offload target code generation for OpenMP and OpenACC can now
+      be better adjused using the new <a
+      href="https://gcc.gnu.org/onlinedocs/gcc/C-Dialect-Options.html#index-foffload-options"
+      ><code>-foffload-options=</code></a> flag and the pre-existing but now
+      documented <a
+      href="https://gcc.gnu.org/onlinedocs/gcc/C-Dialect-Options.html#index-foffload"
+      ><code>-foffload=</code></a> flag.
+  </li>
 </ul>
 
 <!-- <h3 id="ada">Ada</h3> -->
@@ -104,6 +112,8 @@ a work-in-progress.</p>
 <h3 id="amdgcn">AMD Radeon (GCN)</h3>
 <ul>
   <li>Debug experience with ROCGDB has been improved.</li>
+  <li>Support for the type <code>__int128_t</code>/<code>integer(kind=16)</code>
+      was added.</li>
 </ul>
 
 <!-- <h3 id="arc">ARC</h3> -->