[patch,wwwdocs,avr,applied] Mention recent additions to the avr backend

[patch,wwwdocs,avr,applied] Mention recent additions to the avr backend

[Georg-Johann Lay]

Applied the patch below

Johann

--

diff --git a/htdocs/gcc-15/changes.html b/htdocs/gcc-15/changes.html
index 3b3a6c0b..aa8d7609 100644
--- a/htdocs/gcc-15/changes.html
+++ b/htdocs/gcc-15/changes.html
@@ -99,7 +99,27 @@ a work-in-progress.</p>

  <!-- <h3 id="arm">arm</h3> -->

-<!-- <h3 id="avr">AVR</h3> -->
+<h3 id="avr">AVR</h3>
+
+<ul>
+  <li>Support has been added for the <code>signal</code> and 
<code>interrupt</code>
+    <a 
href="https://gcc.gnu.org/onlinedocs/gcc/AVR-Function-Attributes.html#index-signal_0028num_0029-function-attribute_002c-AVR"
+       >function attributes</a>
+    that allow to specify the interrupt vector number as an argument.
+    It allows to use static functions as interrupt handlers, and also
+    functions defined in a C++ namespace.</li>
+  <li>Support has been added for the <code>noblock</code> function 
attribute.
+    It can be specified together with the <code>signal</code> attribute to
+    indicate that the interrupt service routine should start with a SEI
+    instruction to globally re-enable interrupts.  The difference to the
+    <code>interrupt</code> attribute is that the <code>noblock</code>
+    attribute just acts like a flag and does not impose a specific function
+    name.</li>
+  <li>Support has been added for the <code>__builtin_avr_mask1</code>
+    <a 
href="https://gcc.gnu.org/onlinedocs/gcc/AVR-Built-in-Functions.html#index-_005f_005fbuiltin_005favr_005fmask1"
+       >built-in function</a>.  It can be used to compute some bit 
masks when
+    code like <code>1&nbsp;&lt;&lt;&nbsp;offset</code> is not fast 
enough.</li>
+</ul>

  <!-- <h3 id="x86">IA-32/x86-64</h3> -->