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commit 6d562a6e6b1a5c09a7d701ee201d0f3c01727b89
Author: Stefan Schulze Frielinghaus
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 core 1.49
-
+S/390, System z, IBM z Systems
+
+
+
+Support for the z17 architecture has been added. When using option
+-march=z17, 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
+-mtune=z17 enables z17 specific instruction scheduling without
+making use of new instructions.
+
+
+
+Builtins for the new vector instructions have been added and can be enabled
+as before using option -mzvector.
+
+
+
+Option -mlra and its counterpart -mno-lra have
+been removed.
+
+
---
Summary of changes:
htdocs/gcc-15/changes.html | 23 ++-
1 file changed, 22 insertions(+), 1 deletion(-)
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