[llvm] c57eaf1 - [AArch64] Function multi-versioning release notes added. NFC.

[Pavel Iliin via llvm-commits]

Author: Pavel Iliin
Date: 2023-01-23T18:31:22Z
New Revision: c57eaf1c8ce37f52f19f47f61591dd7597a68226

URL: https://github.com/llvm/llvm-project/commit/c57eaf1c8ce37f52f19f47f61591dd7597a68226
DIFF: https://github.com/llvm/llvm-project/commit/c57eaf1c8ce37f52f19f47f61591dd7597a68226.diff

LOG: [AArch64] Function multi-versioning release notes added. NFC.

Differential Revision: https://reviews.llvm.org/D142265

Added: 
    

Modified: 
    clang/docs/ReleaseNotes.rst
    llvm/docs/ReleaseNotes.rst

Removed: 
    


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diff  --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index e996858c6830b..080a400726057 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -614,6 +614,15 @@ Attribute Changes in Clang
   memory placement. It emits a warning if something in the code provably prevents
   an instance from a read-only memory placement.
 
+- Introduced new attribute ``__attribute__((target_version("cpu_features")))``
+  and expanded the functionality of the existing attribute
+  ``__attribute__((target_clones("cpu_features1","cpu_features2",...)))`` to
+  support Function Multi Versioning on AArch64 target. It detects at runtime
+  which function versions are supported by CPU and calls the one with highest
+  priority. Refer to `clang attributes
+  <https://clang.llvm.org/docs/AttributeReference.html#target-version>`_ for
+  more details.
+
 Windows Support
 ---------------
 - For the MinGW driver, added the options ``-mguard=none``, ``-mguard=cf`` and

diff  --git a/llvm/docs/ReleaseNotes.rst b/llvm/docs/ReleaseNotes.rst
index fbacfefe467cb..53c947dc7cef1 100644
--- a/llvm/docs/ReleaseNotes.rst
+++ b/llvm/docs/ReleaseNotes.rst
@@ -133,6 +133,10 @@ Changes to the AArch64 Backend
 * Added support for the Neoverse V2 CPU.
 * Added support for assembly for RME MEC (Memory Encryption Contexts).
 * Added codegen support for the Armv8.3 Complex Number extension.
+* Implemented `Function Multi Versioning
+  <https://arm-software.github.io/acle/main/acle.html#function-multi-versioning>`_
+  in accordance with Arm C Language Extensions specification. Currently in Beta
+  state.
 
 Changes to the AMDGPU Backend
 -----------------------------