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commit beb1ba93ae1e24b4f6301deddfb19550e8c6e46e
Author: Georg-Johann Lay <a...@gjlay.de>
Date: Sat Jan 18 18:49:46 2025 +0100
gcc-15/changes: Add more AVR news.
diff --git a/htdocs/gcc-15/changes.html b/htdocs/gcc-15/changes.html
index 82a86488..a9778659 100644
--- a/htdocs/gcc-15/changes.html
+++ b/htdocs/gcc-15/changes.html
@@ -362,6 +362,28 @@ asm (".text; %cc0: mov %cc2, %%r0; .previous;"
<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 << offset</code> is not fast enough.</li>
+ <li>Support has been added for a new 24-bit
+ <a
href="https://gcc.gnu.org/onlinedocs/gcc/Named-Address-Spaces.html#AVR-Named-Address-Spaces-1";
+ >named address space</a> <code>__flashx</code>.
+ It is similar to the <code>__memx</code> address space introduced in v4.7,
+ but reading is a bit more efficient since it only supports reading from
+ program memory. Objects in the <code>__flashx</code> address space are
+ located in the <code>.progmemx.data</code> section.</li>
+ <li>Apart from the built-in types <code>__int24</code> and
+ <code>__int24</code> supported since v4.7, support has been added for the
+ <code>signed __int24</code> and <code>unsigned __int24</code> types.</li>
+ <li>Code generation for the 32-bit integer shifts with constant
+ offset has been improved. The code size may slightly increase even
+ when optimizing for code size with <code>-Os</code>.</li>
+ <li>New AVR specific optimization passes have been added.
+ They run after register allocation and can be controlled by the new
+ command-line options
+ <a
href="https://gcc.gnu.org/onlinedocs/gcc/AVR-Options.html#index-mfuse-move";
+ ><code>-mfuse-move</code></a>,
+ <a
href="https://gcc.gnu.org/onlinedocs/gcc/AVR-Options.html#index-msplit-ldst";
+ ><code>-msplit-ldst</code></a> and
+ <a
href="https://gcc.gnu.org/onlinedocs/gcc/AVR-Options.html#index-msplit-bit-shift";
+ ><code>-msplit-bit-shift</code></a>.</li>
</ul>
<h3 id="x86">IA-32/x86-64</h3>
-----------------------------------------------------------------------
Summary of changes:
htdocs/gcc-15/changes.html | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
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