src/cpu/sparc/vm/c1_LIRGenerator_sparc.cpp

@@ -1202,10 +1202,21 @@
     LIR_Address* addr = new LIR_Address(src, offset, type);
     __ load(addr, dst);
   }
 }
 
+LIR_Opr LIRGenerator::unpack_offset(LIR_Opr src, LIR_Opr off) {
+  LIR_Opr tmp = new_register(T_LONG);
+  LabelObj* Lcont = new LabelObj();
+  __ move(off, tmp);
+  __ cmp(lir_cond_equal, src, LIR_OprFact::oopConst(NULL));
+  __ branch(lir_cond_equal, T_OBJECT, Lcont->label());
+  __ shift_right(tmp, Unsafe::offset_shift, tmp);
+  __ branch_destination(Lcont->label());
+  return tmp;
+}
+
 void LIRGenerator::do_UnsafeGetAndSetObject(UnsafeGetAndSetObject* x) {
   BasicType type = x->basic_type();
   LIRItem src(x->object(), this);
   LIRItem off(x->offset(), this);
   LIRItem value(x->value(), this);