[clang] [llvm] [llvm][Docs] Add release notes about dwarf fission with relaxations (PR #169871)

[via llvm-commits]

https://github.com/daniilavdeev created https://github.com/llvm/llvm-project/pull/169871

None

>From 7d276a504ff39735aa69edf63890cea73e294207 Mon Sep 17 00:00:00 2001
From: Daniil Avdeev <daniilavdeev237 at gmail.com>
Date: Fri, 28 Nov 2025 04:11:02 +0000
Subject: [PATCH] [llvm][Docs] Add release notes about dwarf fission with
 relaxations

---
 clang/docs/ReleaseNotes.rst | 3 +++
 llvm/docs/ReleaseNotes.md   | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 4cfcd37df1866..62801a05aedda 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -639,6 +639,9 @@ RISC-V Support
 - `__GCC_CONSTRUCTIVE_SIZE` and `__GCC_DESTRUCTIVE_SIZE` are changed to 64. These values are
   unstable according to `Clang's documentation <https://clang.llvm.org/docs/LanguageExtensions.html#gcc-destructive-size-and-gcc-constructive-size>`_.
 
+- DWARF fission is now compatible with linker relaxations, allowing `-gsplit-dwarf` and `-mrelax`
+  to be used together when building for the RISC-V platform.
+
 CUDA/HIP Language Changes
 ^^^^^^^^^^^^^^^^^^^^^^^^^
 
diff --git a/llvm/docs/ReleaseNotes.md b/llvm/docs/ReleaseNotes.md
index 6203c01453d55..2d2bcfdb3495d 100644
--- a/llvm/docs/ReleaseNotes.md
+++ b/llvm/docs/ReleaseNotes.md
@@ -149,6 +149,8 @@ Changes to the RISC-V Backend
 * Adds experimental support for the 'Zibi` (Branch with Immediate) extension.
 * Add support for Zvfofp8min (OFP8 conversion extension)
 * Adds assembler support for the Andes `XAndesvsinth` (Andes Vector Small Int Handling Extension).
+* DWARF fission is now compatible with linker relaxations, allowing `-gsplit-dwarf` and `-mrelax`
+  to be used together when building for the RISC-V platform.
 
 Changes to the WebAssembly Backend
 ----------------------------------