Add release note about ABI implementation changes for _BitInt on Arm

mgabka · Sep 1, 2024 · 3f768dd · 3f768dd
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commit 3f768dd
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diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
@@ -1221,6 +1221,9 @@ Arm and AArch64 Support
    ``-mabi=pauthtest`` option or via specifying ``pauthtest`` environment part of
    target triple.
 
+ - The C23 ``_BitInt`` implementation has been brought into compliance
+   with AAPCS32 and AAPCS64.
+
 Android Support
 ^^^^^^^^^^^^^^^