src/hotspot/cpu/aarch64/c2_MacroAssembler_aarch64.cpp

@@ -2056,5 +2056,17 @@
        return true;
      }
    }
    return MacroAssembler::in_scratch_emit_size();
  }
+ 
+ void C2_MacroAssembler::load_nklass_compact(Register dst, Register obj) {
+   C2LoadNKlassStub* stub = new (Compile::current()->comp_arena()) C2LoadNKlassStub(dst);
+   Compile::current()->output()->add_stub(stub);
+   ldr(dst, Address(obj, oopDesc::mark_offset_in_bytes()));
+   // NOTE: We can't use tbnz here, because the target is sometimes too far away
+   // and cannot be encoded.
+   tst(dst, markWord::monitor_value);
+   br(Assembler::NE, stub->entry());
+   bind(stub->continuation());
+   lsr(dst, dst, markWord::klass_shift);
+ }