separately handle tagged and real addresses

Author: kastiglione

lldb/source/Plugins/LanguageRuntime/Swift/LLDBMemoryReader.cpp

@@ -135,9 +135,19 @@ LLDBMemoryReader::resolvePointer(swift::remote::RemoteAddress address,
 
   llvm::Optional<Address> maybeAddr =
       resolveRemoteAddress(address.getAddressData());
+  // This is not an assert, but should never happen.
   if (!maybeAddr)
     return pointer;
-  auto addr = *maybeAddr;
+
+  Address addr;
+  if (maybeAddr->IsSectionOffset()) {
+    // `address` was tagged, and then successfully mapped (resolved).
+    addr = *maybeAddr;
+  } else {
+    // `address` is a real load address.
+    if (!target.ResolveLoadAddress(address.getAddressData(), addr))
+      return pointer;
+  }
 
   if (!addr.GetSection()->CanContainSwiftReflectionData())
     return pointer;