[clang] [clang] document that by default FP turned off for ARM baremetal (PR #122881)

[Ties Stuij via cfe-commits]

https://github.com/stuij created https://github.com/llvm/llvm-project/pull/122881

As per #117140.

>From 7865fd2bf4e0bb9c35b3d14f362732c994914568 Mon Sep 17 00:00:00 2001
From: Ties Stuij <ties.stuij at arm.com>
Date: Tue, 14 Jan 2025 10:01:33 +0000
Subject: [PATCH] [clang] document that by default FP turned off for ARM
 baremetal

As per #117140.
---
 clang/docs/ReleaseNotes.rst | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 794943b24a003c..663e7561f715c0 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -1076,6 +1076,8 @@ Arm and AArch64 Support
   in leaf functions after enabling ``-fno-omit-frame-pointer``, you can do so by adding
   the ``-momit-leaf-frame-pointer`` option.
 
+- For ARM baremetal targets, the frame pointer (FP) is now turned off by default.
+
 - Support has been added for the following processors (-mcpu identifiers in parenthesis):
 
   For AArch64: