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

[Anatoly Trosinenko via cfe-commits]

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@@ -764,6 +771,13 @@ class LangOptions : public LangOptionsBase {
     return getSignReturnAddressScope() == SignReturnAddressScopeKind::All;
   }
 
+  /// Check if return address signing hardening is enabled and uses load from
+  /// the return address.
+  bool isSignReturnAddressHardenWithLoadReturnAddress() const {
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atrosinenko wrote:

Restoring the "is hardening enabled?" getter that checks for `... != None` could possibly be more straightforward, see below.

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