[llvm] [BOLT][AArch64] Handle OpNegateRAState to enable optimizing binaries with pac-ret hardening (PR #120064)

[Maksim Panchenko via llvm-commits]

================
@@ -3491,6 +3491,17 @@ void RewriteInstance::disassembleFunctions() {
       }
     }
 
+    // Check if fillCFIInfoFor removed any OpNegateRAState CFIs from the
+    // function.
+    if (Function.containedNegateRAState()) {
+      if (!opts::UpdateBranchProtection) {
+        BC->errs()
+            << "BOLT-ERROR: --update-branch-protection is set to false, but "
+            << Function.getPrintName() << " contains .cfi-negate-ra-state.\n";
----------------
maksfb wrote:

```suggestion
            << Function.getPrintName() << " contains .cfi-negate-ra-state\n";
```

https://github.com/llvm/llvm-project/pull/120064