[clang] [Clang][AArch64] Change SME attributes for shared/new/preserved state. (PR #76971)

[Sander de Smalen via cfe-commits]

================
@@ -6898,13 +6941,18 @@ at the end of the function.
   }];
 }
 
-def ArmSmeNewZADocs : Documentation {
+def ArmNewDocs : Documentation {
   let Category = DocCatArmSmeAttributes;
   let Content = [{
-The ``__arm_new_za`` keyword applies to function declarations and specifies
-that the function will be set up with a fresh ZA context.
+The ``__arm_new`` keyword applies to function declarations and specifies
+that the function will create a new scope for state S.
+
+The attribute takes string arguments to instruct the compiler which state
+is shared.  The supported states for S are:
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sdesmalen-arm wrote:

Done.

https://github.com/llvm/llvm-project/pull/76971