JDK-8211073 exposed problems in AArch64 code:

* For target hotspot_variant-server_libjvm_objs_accessBarrierSupport.o:
In file included from /home/shade/jdk-jdk/src/hotspot/share/runtime/orderAccess.hpp:317:0,
                 from /home/shade/jdk-jdk/src/hotspot/share/oops/array.hpp:30,
                 from /home/shade/jdk-jdk/src/hotspot/share/oops/annotations.hpp:28,
                 from /home/shade/jdk-jdk/src/hotspot/share/oops/instanceKlass.hpp:30,
                 from /home/shade/jdk-jdk/src/hotspot/share/runtime/reflectionUtils.hpp:29,
                 from /home/shade/jdk-jdk/src/hotspot/share/classfile/systemDictionary.hpp:33,
                 from /home/shade/jdk-jdk/src/hotspot/share/classfile/javaClasses.hpp:28,
                 from /home/shade/jdk-jdk/src/hotspot/share/classfile/javaClasses.inline.hpp:28,
                 from /home/shade/jdk-jdk/src/hotspot/share/gc/shared/accessBarrierSupport.cpp:26:
/home/shade/jdk-jdk/src/hotspot/os_cpu/linux_aarch64/orderAccess_linux_aarch64.hpp: In instantiation of 'T OrderAccess::PlatformOrderedLoad<byte_size, (ScopedFenceType)0u>::operator()(const volatile T*) const [with T = unsigned int; long unsigned int byte_size = 4ul]':
/home/shade/jdk-jdk/src/hotspot/share/runtime/atomic.hpp:383:29: required from 'T Atomic::LoadImpl<T, PlatformOp, typename EnableIf<((IsIntegral<T>::value || IsRegisteredEnum<T>::value) || IsPointer<T>::value)>::type>::operator()(const volatile T*) const [with T = unsigned int; PlatformOp = OrderAccess::PlatformOrderedLoad<4ul, (ScopedFenceType)0u>; typename EnableIf<((IsIntegral<T>::value || IsRegisteredEnum<T>::value) || IsPointer<T>::value)>::type = void]'
/home/shade/jdk-jdk/src/hotspot/share/runtime/orderAccess.hpp:339:69: required from 'static T OrderAccess::load_acquire(const volatile T*) [with T = unsigned int]'
/home/shade/jdk-jdk/src/hotspot/share/oops/oop.inline.hpp:113:75: required from here
/home/shade/jdk-jdk/src/hotspot/os_cpu/linux_aarch64/orderAccess_linux_aarch64.hpp:58:5: error: parameter 'p' set but not used [-Werror=unused-but-set-parameter]
   T operator()(const volatile T* p) const { T data; __atomic_load(p, &data, __ATOMIC_ACQUIRE); return data; }
   ... (rest of output omitted)
* For target hotspot_variant-server_libjvm_objs_accessFlags.o:
In file included from /home/shade/jdk-jdk/src/hotspot/share/runtime/orderAccess.hpp:317:0,
                 from /home/shade/jdk-jdk/src/hotspot/share/oops/array.hpp:30,
                 from /home/shade/jdk-jdk/src/hotspot/share/oops/annotations.hpp:28,
                 from /home/shade/jdk-jdk/src/hotspot/share/oops/method.hpp:33,
                 from /home/shade/jdk-jdk/src/hotspot/share/runtime/frame.hpp:28,
                 from /home/shade/jdk-jdk/src/hotspot/share/code/codeBlob.hpp:31,
                 from /home/shade/jdk-jdk/src/hotspot/share/code/compiledMethod.hpp:28,
                 from /home/shade/jdk-jdk/src/hotspot/share/runtime/thread.hpp:29,
                 from /home/shade/jdk-jdk/src/hotspot/share/runtime/safepoint.hpp:30,
                 from /home/shade/jdk-jdk/src/hotspot/share/gc/shared/collectedHeap.hpp:34,
                 from /home/shade/jdk-jdk/src/hotspot/share/oops/oop.inline.hpp:28,
                 from /home/shade/jdk-jdk/src/hotspot/share/utilities/accessFlags.cpp:26:
/home/shade/jdk-jdk/src/hotspot/os_cpu/linux_aarch64/orderAccess_linux_aarch64.hpp: In instantiation of 'T OrderAccess::PlatformOrderedLoad<byte_size, (ScopedFenceType)0u>::operator()(const volatile T*) const [with T = signed char; long unsigned int byte_size = 1ul]':
/home/shade/jdk-jdk/src/hotspot/share/runtime/atomic.hpp:383:29: required from 'T Atomic::LoadImpl<T, PlatformOp, typename EnableIf<((IsIntegral<T>::value || IsRegisteredEnum<T>::value) || IsPointer<T>::value)>::type>::operator()(const volatile T*) const [with T = signed char; PlatformOp = OrderAccess::PlatformOrderedLoad<1ul, (ScopedFenceType)0u>; typename EnableIf<((IsIntegral<T>::value || IsRegisteredEnum<T>::value) || IsPointer<T>::value)>::type = void]'
/home/shade/jdk-jdk/src/hotspot/share/runtime/orderAccess.hpp:339:69: required from 'static T OrderAccess::load_acquire(const volatile T*) [with T = signed char]'
   ... (rest of output omitted)