8339113: AccessFlags can be u2 in metadata

Co-authored-by: Amit Kumar <amitkumar@openjdk.org>
Reviewed-by: sspitsyn, vlivanov, yzheng, dlong, dholmes

Author: coleenp

src/hotspot/cpu/aarch64/interp_masm_aarch64.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2025, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2014, 2020, Red Hat Inc. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -503,7 +503,7 @@ void InterpreterMacroAssembler::remove_activation(
 
  // get method access flags
   ldr(r1, Address(rfp, frame::interpreter_frame_method_offset * wordSize));
-  ldr(r2, Address(r1, Method::access_flags_offset()));
+  ldrh(r2, Address(r1, Method::access_flags_offset()));
   tbz(r2, exact_log2(JVM_ACC_SYNCHRONIZED), unlocked);
 
   // Don't unlock anything if the _do_not_unlock_if_synchronized flag

src/hotspot/cpu/aarch64/sharedRuntime_aarch64.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2024, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2025, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2014, 2021, Red Hat Inc. All rights reserved.
  * Copyright (c) 2021, Azul Systems, Inc. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
@@ -760,7 +760,7 @@ AdapterHandlerEntry* SharedRuntime::generate_i2c2i_adapters(MacroAssembler *masm
     Label L_skip_barrier;
 
     { // Bypass the barrier for non-static methods
-      __ ldrw(rscratch1, Address(rmethod, Method::access_flags_offset()));
+      __ ldrh(rscratch1, Address(rmethod, Method::access_flags_offset()));
       __ andsw(zr, rscratch1, JVM_ACC_STATIC);
       __ br(Assembler::EQ, L_skip_barrier); // non-static
     }