[clang] [Clang][AArch64] Command-line options for A-profile's Sign Return Address Hardening (PR #176171)

[Anatoly Trosinenko via cfe-commits]

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@@ -753,6 +735,11 @@ class LangOptions : public LangOptionsBase {
     return getSignReturnAddressScope() == SignReturnAddressScopeKind::All;
   }
 
+  bool hasSignReturnAddressHardening() const {
+    return getSignReturnAddressHardening() !=
+           SignReturnAddressHardeningKind::None;
+  }
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atrosinenko wrote:

[nit] This method is currently unused. (Just mentioning this in case it was accidentally kept in the final version after removing all its users - feel free to ignore)

https://github.com/llvm/llvm-project/pull/176171