[llvm] [BOLT][AArch64] Support for pointer authentication (PR #117578)

[Paschalis Mpeis via llvm-commits]

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@@ -177,6 +177,11 @@ namespace llvm {
       return size() == RHS.size() && compare_insensitive(RHS) == 0;
     }
 
+    /// Check for string equality, ignoring case.
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paschalis-mpeis wrote:

Is this really ignoring case?

Why not using `compare` directly in `isNoReturnCall` without needing this function?

If it stays, consider usine`size()` instead of `Length`, similarly to adjacent code.

https://github.com/llvm/llvm-project/pull/117578