[clang] 1adfbfc - Add info on PACBTI-M to the Clang release notes

[Ties Stuij via cfe-commits]

Author: Ties Stuij
Date: 2022-01-31T19:01:25Z
New Revision: 1adfbfcf39f95106861ebe8a7b4245acb0bc6e69

URL: https://github.com/llvm/llvm-project/commit/1adfbfcf39f95106861ebe8a7b4245acb0bc6e69
DIFF: https://github.com/llvm/llvm-project/commit/1adfbfcf39f95106861ebe8a7b4245acb0bc6e69.diff

LOG: Add info on PACBTI-M to the Clang release notes

Differential Revision: https://reviews.llvm.org/D118380

Added: 
    

Modified: 
    clang/docs/ReleaseNotes.rst

Removed: 
    


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diff  --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 4b444bece68a7..3a42b4252ed73 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -77,6 +77,9 @@ New Compiler Flags
 
 - Clang plugin arguments can now be passed through the compiler driver via
   ``-fplugin-arg-pluginname-arg``, similar to GCC's ``-fplugin-arg``.
+- The ``-mno-bti-at-return-twice`` flag will make sure a BTI instruction won't
+  be added after a setjmp or possible other return-twice construct (ARM backend
+  only).
 
 Deprecated Compiler Flags
 -------------------------
@@ -293,6 +296,11 @@ Arm and AArch64 Support in Clang
   GNU driver. Programs that depend on clang invoking GCC as the linker driver
   should use GCC as the linker in the build system.
 
+- The ``-mbranch-protection`` flag will now also work for the ARM backend.
+
+- The ``attribute((target("branch-protection=...)))`` attributes will now also
+  work for the ARM backend.
+
 Floating Point Support in Clang
 -------------------------------
 - The default setting of FP contraction (FMA) is now -ffp-contract=on (for