8346040: Zero interpreter build on Linux Aarch64 is broken

Reviewed-by: kbarrett
Backport-of: ef6e987

Author: coleenp

src/hotspot/share/oops/compressedKlass.hpp

@@ -258,9 +258,15 @@ class CompressedKlassPointers : public AllStatic {
         is_aligned(addr, klass_alignment_in_bytes());
   }
 
-  // Check that with the given base, shift and range, aarch64 an encode and decode the klass pointer.
-  static bool check_klass_decode_mode(address base, int shift, const size_t range) NOT_AARCH64({ return true;});
-  static bool set_klass_decode_mode() NOT_AARCH64({ return true;});  // can be called after initialization
+#if defined(AARCH64) && !defined(ZERO)
+  // Check that with the given base, shift and range, aarch64 code can encode and decode the klass pointer.
+  static bool check_klass_decode_mode(address base, int shift, const size_t range);
+  // Called after initialization.
+  static bool set_klass_decode_mode();
+#else
+  static bool check_klass_decode_mode(address base, int shift, const size_t range) { return true; }
+  static bool set_klass_decode_mode() { return true; }
+#endif
 };
 
 #endif // SHARE_OOPS_COMPRESSEDKLASS_HPP