[llvm-branch-commits] [llvm] AMDGPU: Add some release 20 notes (PR #128136)

[Matt Arsenault via llvm-branch-commits]

https://github.com/arsenm created https://github.com/llvm/llvm-project/pull/128136

None

>From 0bb2ec6c4fc3c15e17a6c538af04f1668bea9cb6 Mon Sep 17 00:00:00 2001
From: Matt Arsenault <Matthew.Arsenault at amd.com>
Date: Fri, 21 Feb 2025 12:49:59 +0700
Subject: [PATCH] AMDGPU: Add some release 20 notes

---
 llvm/docs/ReleaseNotes.md | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/llvm/docs/ReleaseNotes.md b/llvm/docs/ReleaseNotes.md
index c80aecfdea084..e654509792652 100644
--- a/llvm/docs/ReleaseNotes.md
+++ b/llvm/docs/ReleaseNotes.md
@@ -159,6 +159,17 @@ Changes to the AArch64 Backend
 Changes to the AMDGPU Backend
 -----------------------------
 
+* Initial support for gfx950
+
+* Improved ``llvm.memcpy``, ``llvm.memmove`` and ``llvm.memset`` lowering
+
+* Fixed expansion of 64-bit flat address space ``atomicrmw`` and
+  ``cmpxchg`` operations which may access private
+  memory. `noalias.addrspace` metadat may be used to avoid the
+  expansion if the target address is known to not be on the stack.
+
+* Fix compile failures when emitting unreachable functions.
+
 * Removed `llvm.amdgcn.flat.atomic.fadd` and
   `llvm.amdgcn.global.atomic.fadd` intrinsics. Users should use the
   {ref}`atomicrmw <i_atomicrmw>` instruction with `fadd` and