[llvm-branch-commits] [llvm] [release/20.x] Update release notes for SystemZ changes (PR #140060)

[Ulrich Weigand via llvm-branch-commits]

https://github.com/uweigand created https://github.com/llvm/llvm-project/pull/140060

None

>From c97e80756a221267af0faebafaa956674f49d732 Mon Sep 17 00:00:00 2001
From: Ulrich Weigand <ulrich.weigand at de.ibm.com>
Date: Thu, 15 May 2025 16:00:30 +0200
Subject: [PATCH] Update release notes for SystemZ changes

---
 llvm/docs/ReleaseNotes.md | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/llvm/docs/ReleaseNotes.md b/llvm/docs/ReleaseNotes.md
index f34003eaf0fe2..ef4ec9b56f364 100644
--- a/llvm/docs/ReleaseNotes.md
+++ b/llvm/docs/ReleaseNotes.md
@@ -349,6 +349,15 @@ Changes to the RISC-V Backend
   extension.
 * Added ``Sdext`` and ``Sdtrig`` extensions.
 
+Changes to the SystemZ Backend
+------------------------------
+
+* Added support for the IBM z17 processor and the arch15 cpu architecture.
+* Added support for `__builtin_setjump` and `__builtin_longjmp`.
+* Improve inlining heuristics to fix compile time explosion in certain cases.
+* Improve various cost functions.
+* Improve compatibility of the assembler parser with the GNU assembler.
+
 Changes to the WebAssembly Backend
 ----------------------------------