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commit 6d562a6e6b1a5c09a7d701ee201d0f3c01727b89
Author: Stefan Schulze Frielinghaus <stefa...@gcc.gnu.org>
Date: Fri May 2 09:58:15 2025 +0200
Document S/390 changes for GCC 15
diff --git a/htdocs/gcc-15/changes.html b/htdocs/gcc-15/changes.html
index f112af58..d851a744 100644
--- a/htdocs/gcc-15/changes.html
+++ b/htdocs/gcc-15/changes.html
@@ -1295,7 +1295,28 @@ structure used in <code>core 1.49</code>
<!-- <h3 id="powerpc">PowerPC / PowerPC64 / RS6000</h3> -->
-<!-- <h3 id="s390">S/390, System z, IBM z Systems</h3> -->
+<h3 id="s390">S/390, System z, IBM z Systems</h3>
+
+<ul>
+ <li>
+ Support for the z17 architecture has been added. When using option
+ <code>-march=z17</code>, the compiler will generate code making use of the
+ new instructions introduced with the vector enhancement facility 3 and the
+ miscellaneous instruction extension facility 4. Option
+ <code>-mtune=z17</code> enables z17 specific instruction scheduling without
+ making use of new instructions.
+ </li>
+
+ <li>
+ Builtins for the new vector instructions have been added and can be enabled
+ as before using option <code>-mzvector</code>.
+ </li>
+
+ <li>
+ Option <code>-mlra</code> and its counterpart <code>-mno-lra</code> have
+ been removed.
+ </li>
+</ul>
<!-- <h3 id="riscv">RISC-V</h3> -->
-----------------------------------------------------------------------
Summary of changes:
htdocs/gcc-15/changes.html | 23 ++++++++++++++++++++++-
1 file changed, 22 insertions(+), 1 deletion(-)
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