8339112: Move JVM Klass flags out of AccessFlags

src/hotspot/cpu/aarch64/c1_MacroAssembler_aarch64.cpp

@@ -75,8 +75,8 @@ int C1_MacroAssembler::lock_object(Register hdr, Register obj, Register disp_hdr
 
   if (DiagnoseSyncOnValueBasedClasses != 0) {
     load_klass(hdr, obj);
-    ldrw(hdr, Address(hdr, Klass::access_flags_offset()));
-    tstw(hdr, JVM_ACC_IS_VALUE_BASED_CLASS);
+    ldrb(hdr, Address(hdr, Klass::misc_flags_offset()));
+    tst(hdr, KlassFlags::_misc_is_value_based_class);
     br(Assembler::NE, slow_case);
   }
 

src/hotspot/cpu/aarch64/c1_Runtime1_aarch64.cpp

@@ -783,8 +783,8 @@ OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) {
         Label register_finalizer;
         Register t = r5;
         __ load_klass(t, r0);
-        __ ldrw(t, Address(t, Klass::access_flags_offset()));
-        __ tbnz(t, exact_log2(JVM_ACC_HAS_FINALIZER), register_finalizer);
+        __ ldrb(t, Address(t, Klass::misc_flags_offset()));
+        __ tbnz(t, exact_log2(KlassFlags::_misc_has_finalizer), register_finalizer);
         __ ret(lr);
 
         __ bind(register_finalizer);

src/hotspot/cpu/aarch64/c2_MacroAssembler_aarch64.cpp

@@ -64,8 +64,8 @@ void C2_MacroAssembler::fast_lock(Register objectReg, Register boxReg, Register
 
   if (DiagnoseSyncOnValueBasedClasses != 0) {
     load_klass(tmp, oop);
-    ldrw(tmp, Address(tmp, Klass::access_flags_offset()));
-    tstw(tmp, JVM_ACC_IS_VALUE_BASED_CLASS);
+    ldrb(tmp, Address(tmp, Klass::misc_flags_offset()));
+    tst(tmp, KlassFlags::_misc_is_value_based_class);
     br(Assembler::NE, cont);
   }
 
@@ -243,8 +243,8 @@ void C2_MacroAssembler::fast_lock_lightweight(Register obj, Register box, Regist
 
   if (DiagnoseSyncOnValueBasedClasses != 0) {
     load_klass(t1, obj);
-    ldrw(t1, Address(t1, Klass::access_flags_offset()));
-    tstw(t1, JVM_ACC_IS_VALUE_BASED_CLASS);
+    ldrb(t1, Address(t1, Klass::misc_flags_offset()));
+    tst(t1, KlassFlags::_misc_is_value_based_class);
     br(Assembler::NE, slow_path);
   }
 

src/hotspot/cpu/aarch64/interp_masm_aarch64.cpp

@@ -690,8 +690,8 @@ void InterpreterMacroAssembler::lock_object(Register lock_reg)
 
     if (DiagnoseSyncOnValueBasedClasses != 0) {
       load_klass(tmp, obj_reg);
-      ldrw(tmp, Address(tmp, Klass::access_flags_offset()));
-      tstw(tmp, JVM_ACC_IS_VALUE_BASED_CLASS);
+      ldrb(tmp, Address(tmp, Klass::misc_flags_offset()));
+      tst(tmp, KlassFlags::_misc_is_value_based_class);
       br(Assembler::NE, slow_case);
     }
 

src/hotspot/cpu/aarch64/templateTable_aarch64.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2024, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2014, Red Hat Inc. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -2191,9 +2191,9 @@ void TemplateTable::_return(TosState state)
 
     __ ldr(c_rarg1, aaddress(0));
     __ load_klass(r3, c_rarg1);
-    __ ldrw(r3, Address(r3, Klass::access_flags_offset()));
+    __ ldrb(r3, Address(r3, Klass::misc_flags_offset()));
     Label skip_register_finalizer;
-    __ tbz(r3, exact_log2(JVM_ACC_HAS_FINALIZER), skip_register_finalizer);
+    __ tbz(r3, exact_log2(KlassFlags::_misc_has_finalizer), skip_register_finalizer);
 
     __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), c_rarg1);
 

src/hotspot/cpu/arm/c1_MacroAssembler_arm.cpp

@@ -195,8 +195,8 @@ int C1_MacroAssembler::lock_object(Register hdr, Register obj, Register disp_hdr
 
   if (DiagnoseSyncOnValueBasedClasses != 0) {
     load_klass(tmp2, obj);
-    ldr_u32(tmp2, Address(tmp2, Klass::access_flags_offset()));
-    tst(tmp2, JVM_ACC_IS_VALUE_BASED_CLASS);
+    ldrb(tmp2, Address(tmp2, Klass::misc_flags_offset()));
+    tst(tmp2, KlassFlags::_misc_is_value_based_class);
     b(slow_case, ne);
   }
 

src/hotspot/cpu/arm/c1_Runtime1_arm.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2008, 2024, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -504,11 +504,11 @@ OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) {
       {
         __ set_info("register_finalizer", dont_gc_arguments);
 
-        // Do not call runtime if JVM_ACC_HAS_FINALIZER flag is not set
+        // Do not call runtime if has_finalizer flag is not set
         __ load_klass(Rtemp, R0);
-        __ ldr_u32(Rtemp, Address(Rtemp, Klass::access_flags_offset()));
+        __ ldrb(Rtemp, Address(Rtemp, Klass::misc_flags_offset()));
 
-        __ tst(Rtemp, JVM_ACC_HAS_FINALIZER);
+        __ tst(Rtemp, KlassFlags::_misc_has_finalizer);
         __ bx(LR, eq);
 
         // Call VM

src/hotspot/cpu/arm/c2_MacroAssembler_arm.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2021, 2024, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -86,8 +86,8 @@ void C2_MacroAssembler::fast_lock(Register Roop, Register Rbox, Register Rscratc
 
   if (DiagnoseSyncOnValueBasedClasses != 0) {
     load_klass(Rscratch, Roop);
-    ldr_u32(Rscratch, Address(Rscratch, Klass::access_flags_offset()));
-    tst(Rscratch, JVM_ACC_IS_VALUE_BASED_CLASS);
+    ldrb(Rscratch, Address(Rscratch, Klass::misc_flags_offset()));
+    tst(Rscratch, KlassFlags::_misc_is_value_based_class);
     b(done, ne);
   }
 

src/hotspot/cpu/arm/interp_masm_arm.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2008, 2024, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -909,8 +909,8 @@ void InterpreterMacroAssembler::lock_object(Register Rlock) {
 
     if (DiagnoseSyncOnValueBasedClasses != 0) {
       load_klass(R0, Robj);
-      ldr_u32(R0, Address(R0, Klass::access_flags_offset()));
-      tst(R0, JVM_ACC_IS_VALUE_BASED_CLASS);
+      ldrb(R0, Address(R0, Klass::misc_flags_offset()));
+      tst(R0, KlassFlags::_misc_is_value_based_class);
       b(slow_case, ne);
     }
 

src/hotspot/cpu/arm/templateTable_arm.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2008, 2024, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -2494,8 +2494,8 @@ void TemplateTable::_return(TosState state) {
     assert(state == vtos, "only valid state");
     __ ldr(R1, aaddress(0));
     __ load_klass(Rtemp, R1);
-    __ ldr_u32(Rtemp, Address(Rtemp, Klass::access_flags_offset()));
-    __ tbz(Rtemp, exact_log2(JVM_ACC_HAS_FINALIZER), skip_register_finalizer);
+    __ ldrb(Rtemp, Address(Rtemp, Klass::misc_flags_offset()));
+    __ tbz(Rtemp, exact_log2(KlassFlags::_misc_has_finalizer), skip_register_finalizer);
 
     __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), R1);
 

src/hotspot/cpu/ppc/c1_MacroAssembler_ppc.cpp

@@ -86,8 +86,8 @@ void C1_MacroAssembler::lock_object(Register Rmark, Register Roop, Register Rbox
 
   if (DiagnoseSyncOnValueBasedClasses != 0) {
     load_klass(Rscratch, Roop);
-    lwz(Rscratch, in_bytes(Klass::access_flags_offset()), Rscratch);
-    testbitdi(CCR0, R0, Rscratch, exact_log2(JVM_ACC_IS_VALUE_BASED_CLASS));
+    lbz(Rscratch, in_bytes(Klass::misc_flags_offset()), Rscratch);
+    testbitdi(CCR0, R0, Rscratch, exact_log2(KlassFlags::_misc_is_value_based_class));
     bne(CCR0, slow_int);
   }
 

src/hotspot/cpu/ppc/c1_Runtime1_ppc.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2024, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2012, 2023 SAP SE. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -479,8 +479,8 @@ OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) {
 
         // Load the klass and check the has finalizer flag.
         __ load_klass(t, R3_ARG1);
-        __ lwz(t, in_bytes(Klass::access_flags_offset()), t);
-        __ testbitdi(CCR0, R0, t, exact_log2(JVM_ACC_HAS_FINALIZER));
+        __ lbz(t, in_bytes(Klass::misc_flags_offset()), t);
+        __ testbitdi(CCR0, R0, t, exact_log2(KlassFlags::_misc_has_finalizer));
         // Return if has_finalizer bit == 0 (CR0.eq).
         __ bclr(Assembler::bcondCRbiIs1, Assembler::bi0(CCR0, Assembler::equal), Assembler::bhintbhBCLRisReturn);
 

src/hotspot/cpu/ppc/interp_masm_ppc_64.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2024, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2012, 2023 SAP SE. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -970,8 +970,8 @@ void InterpreterMacroAssembler::lock_object(Register monitor, Register object) {
 
     if (DiagnoseSyncOnValueBasedClasses != 0) {
       load_klass(tmp, object);
-      lwz(tmp, in_bytes(Klass::access_flags_offset()), tmp);
-      testbitdi(CCR0, R0, tmp, exact_log2(JVM_ACC_IS_VALUE_BASED_CLASS));
+      lbz(tmp, in_bytes(Klass::misc_flags_offset()), tmp);
+      testbitdi(CCR0, R0, tmp, exact_log2(KlassFlags::_misc_is_value_based_class));
       bne(CCR0, slow_case);
     }
 

src/hotspot/cpu/ppc/macroAssembler_ppc.cpp

@@ -2558,8 +2558,8 @@ void MacroAssembler::compiler_fast_lock_object(ConditionRegister flag, Register
 
   if (DiagnoseSyncOnValueBasedClasses != 0) {
     load_klass(temp, oop);
-    lwz(temp, in_bytes(Klass::access_flags_offset()), temp);
-    testbitdi(flag, R0, temp, exact_log2(JVM_ACC_IS_VALUE_BASED_CLASS));
+    lbz(temp, in_bytes(Klass::misc_flags_offset()), temp);
+    testbitdi(flag, R0, temp, exact_log2(KlassFlags::_misc_is_value_based_class));
     bne(flag, failure);
   }
 
@@ -2749,8 +2749,8 @@ void MacroAssembler::compiler_fast_lock_lightweight_object(ConditionRegister fla
 
   if (DiagnoseSyncOnValueBasedClasses != 0) {
     load_klass(tmp1, obj);
-    lwz(tmp1, in_bytes(Klass::access_flags_offset()), tmp1);
-    testbitdi(flag, R0, tmp1, exact_log2(JVM_ACC_IS_VALUE_BASED_CLASS));
+    lbz(tmp1, in_bytes(Klass::misc_flags_offset()), tmp1);
+    testbitdi(flag, R0, tmp1, exact_log2(KlassFlags::_misc_is_value_based_class));
     bne(flag, slow_path);
   }
 

src/hotspot/cpu/ppc/templateTable_ppc_64.cpp

@@ -2130,8 +2130,8 @@ void TemplateTable::_return(TosState state) {
 
     // Load klass of this obj.
     __ load_klass(Rklass, R17_tos);
-    __ lwz(Rklass_flags, in_bytes(Klass::access_flags_offset()), Rklass);
-    __ testbitdi(CCR0, R0, Rklass_flags, exact_log2(JVM_ACC_HAS_FINALIZER));
+    __ lbz(Rklass_flags, in_bytes(Klass::misc_flags_offset()), Rklass);
+    __ testbitdi(CCR0, R0, Rklass_flags, exact_log2(KlassFlags::_misc_has_finalizer));
     __ bfalse(CCR0, Lskip_register_finalizer);
 
     __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), R17_tos /* obj */);

src/hotspot/cpu/riscv/c1_MacroAssembler_riscv.cpp

@@ -64,8 +64,8 @@ int C1_MacroAssembler::lock_object(Register hdr, Register obj, Register disp_hdr
 
   if (DiagnoseSyncOnValueBasedClasses != 0) {
     load_klass(hdr, obj);
-    lwu(hdr, Address(hdr, Klass::access_flags_offset()));
-    test_bit(temp, hdr, exact_log2(JVM_ACC_IS_VALUE_BASED_CLASS));
+    lbu(hdr, Address(hdr, Klass::misc_flags_offset()));
+    test_bit(temp, hdr, exact_log2(KlassFlags::_misc_is_value_based_class));
     bnez(temp, slow_case, true /* is_far */);
   }
 

src/hotspot/cpu/riscv/c1_Runtime1_riscv.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2024, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2014, Red Hat Inc. All rights reserved.
  * Copyright (c) 2020, 2023, Huawei Technologies Co., Ltd. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
@@ -799,8 +799,8 @@ OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) {
         Label register_finalizer;
         Register t = x15;
         __ load_klass(t, x10);
-        __ lwu(t, Address(t, Klass::access_flags_offset()));
-        __ test_bit(t0, t, exact_log2(JVM_ACC_HAS_FINALIZER));
+        __ lbu(t, Address(t, Klass::misc_flags_offset()));
+        __ test_bit(t0, t, exact_log2(KlassFlags::_misc_has_finalizer));
         __ bnez(t0, register_finalizer);
         __ ret();
 

src/hotspot/cpu/riscv/c2_MacroAssembler_riscv.cpp

@@ -68,8 +68,8 @@ void C2_MacroAssembler::fast_lock(Register objectReg, Register boxReg,
 
   if (DiagnoseSyncOnValueBasedClasses != 0) {
     load_klass(tmp, oop);
-    lwu(tmp, Address(tmp, Klass::access_flags_offset()));
-    test_bit(tmp, tmp, exact_log2(JVM_ACC_IS_VALUE_BASED_CLASS));
+    lbu(tmp, Address(tmp, Klass::misc_flags_offset()));
+    test_bit(tmp, tmp, exact_log2(KlassFlags::_misc_is_value_based_class));
     bnez(tmp, slow_path);
   }
 
@@ -277,8 +277,8 @@ void C2_MacroAssembler::fast_lock_lightweight(Register obj, Register box,
 
   if (DiagnoseSyncOnValueBasedClasses != 0) {
     load_klass(tmp1, obj);
-    lwu(tmp1, Address(tmp1, Klass::access_flags_offset()));
-    test_bit(tmp1, tmp1, exact_log2(JVM_ACC_IS_VALUE_BASED_CLASS));
+    lbu(tmp1, Address(tmp1, Klass::misc_flags_offset()));
+    test_bit(tmp1, tmp1, exact_log2(KlassFlags::_misc_is_value_based_class));
     bnez(tmp1, slow_path);
   }
 

src/hotspot/cpu/riscv/interp_masm_riscv.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2024, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2014, 2020, Red Hat Inc. All rights reserved.
  * Copyright (c) 2020, 2023, Huawei Technologies Co., Ltd. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
@@ -750,8 +750,8 @@ void InterpreterMacroAssembler::lock_object(Register lock_reg)
 
     if (DiagnoseSyncOnValueBasedClasses != 0) {
       load_klass(tmp, obj_reg);
-      lwu(tmp, Address(tmp, Klass::access_flags_offset()));
-      test_bit(tmp, tmp, exact_log2(JVM_ACC_IS_VALUE_BASED_CLASS));
+      lbu(tmp, Address(tmp, Klass::misc_flags_offset()));
+      test_bit(tmp, tmp, exact_log2(KlassFlags::_misc_is_value_based_class));
       bnez(tmp, slow_case);
     }
 

src/hotspot/cpu/riscv/templateTable_riscv.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2024, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2014, Red Hat Inc. All rights reserved.
  * Copyright (c) 2020, 2023, Huawei Technologies Co., Ltd. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
@@ -2098,9 +2098,9 @@ void TemplateTable::_return(TosState state) {
 
     __ ld(c_rarg1, aaddress(0));
     __ load_klass(x13, c_rarg1);
-    __ lwu(x13, Address(x13, Klass::access_flags_offset()));
+    __ lbu(x13, Address(x13, Klass::misc_flags_offset()));
     Label skip_register_finalizer;
-    __ test_bit(t0, x13, exact_log2(JVM_ACC_HAS_FINALIZER));
+    __ test_bit(t0, x13, exact_log2(KlassFlags::_misc_has_finalizer));
     __ beqz(t0, skip_register_finalizer);
 
     __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), c_rarg1);

src/hotspot/cpu/s390/c1_MacroAssembler_s390.cpp

@@ -72,7 +72,7 @@ void C1_MacroAssembler::lock_object(Register Rmark, Register Roop, Register Rbox
 
   if (DiagnoseSyncOnValueBasedClasses != 0) {
     load_klass(tmp, Roop);
-    testbit(Address(tmp, Klass::access_flags_offset()), exact_log2(JVM_ACC_IS_VALUE_BASED_CLASS));
+    z_tm(Address(tmp, Klass::misc_flags_offset()), KlassFlags::_misc_is_value_based_class);
     branch_optimized(Assembler::bcondAllOne, slow_case);
   }
 

src/hotspot/cpu/s390/c1_Runtime1_s390.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 2024, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2016, 2023 SAP SE. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -443,7 +443,7 @@ OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) {
         // Load the klass and check the has finalizer flag.
         Register klass = Z_ARG2;
         __ load_klass(klass, Z_ARG1);
-        __ testbit(Address(klass, Klass::access_flags_offset()), exact_log2(JVM_ACC_HAS_FINALIZER));
+        __ z_tm(Address(klass, Klass::misc_flags_offset()), KlassFlags::_misc_has_finalizer);
         __ z_bcr(Assembler::bcondAllZero, Z_R14); // Return if bit is not set.
 
         OopMap* oop_map = save_live_registers(sasm);

src/hotspot/cpu/s390/interp_masm_s390.cpp

@@ -1007,7 +1007,7 @@ void InterpreterMacroAssembler::lock_object(Register monitor, Register object) {
 
   if (DiagnoseSyncOnValueBasedClasses != 0) {
     load_klass(tmp, object);
-    testbit(Address(tmp, Klass::access_flags_offset()), exact_log2(JVM_ACC_IS_VALUE_BASED_CLASS));
+    z_tm(Address(tmp, Klass::misc_flags_offset()), KlassFlags::_misc_is_value_based_class);
     z_btrue(slow_case);
   }
 

src/hotspot/cpu/s390/macroAssembler_s390.cpp

@@ -3507,9 +3507,7 @@ void MacroAssembler::compiler_fast_lock_object(Register oop, Register box, Regis
 
   if (DiagnoseSyncOnValueBasedClasses != 0) {
     load_klass(temp, oop);
-    z_l(temp, Address(temp, Klass::access_flags_offset()));
-    assert((JVM_ACC_IS_VALUE_BASED_CLASS & 0xFFFF) == 0, "or change following instruction");
-    z_nilh(temp, JVM_ACC_IS_VALUE_BASED_CLASS >> 16);
+    z_tm(Address(temp, Klass::misc_flags_offset()), KlassFlags::_misc_is_value_based_class);
     z_brne(done);
   }
 
@@ -6154,9 +6152,7 @@ void MacroAssembler::compiler_fast_lock_lightweight_object(Register obj, Registe
 
   if (DiagnoseSyncOnValueBasedClasses != 0) {
     load_klass(tmp1, obj);
-    z_l(tmp1, Address(tmp1, Klass::access_flags_offset()));
-    assert((JVM_ACC_IS_VALUE_BASED_CLASS & 0xFFFF) == 0, "or change following instruction");
-    z_nilh(tmp1, JVM_ACC_IS_VALUE_BASED_CLASS >> 16);
+    z_tm(Address(tmp1, Klass::misc_flags_offset()), KlassFlags::_misc_is_value_based_class);
     z_brne(slow_path);
   }
 

src/hotspot/cpu/s390/templateTable_s390.cpp

@@ -2321,7 +2321,7 @@ void TemplateTable::_return(TosState state) {
     assert(state == vtos, "only valid state");
     __ z_lg(Rthis, aaddress(0));
     __ load_klass(Rklass, Rthis);
-    __ testbit(Address(Rklass, Klass::access_flags_offset()), exact_log2(JVM_ACC_HAS_FINALIZER));
+    __ z_tm(Address(Rklass, Klass::misc_flags_offset()), KlassFlags::_misc_has_finalizer);
     __ z_bfalse(skip_register_finalizer);
     __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), Rthis);
     __ bind(skip_register_finalizer);