src/hotspot/cpu/aarch64/gc/shenandoah/shenandoahBarrierSetC1_aarch64.cpp

rev 55609 : Eliminate extra forwarding pointer per object

@@ -34,10 +34,11 @@
   Register addr = _addr->as_register_lo();
   Register newval = _new_value->as_register();
   Register cmpval = _cmp_value->as_register();
   Register tmp1 = _tmp1->as_register();
   Register tmp2 = _tmp2->as_register();
+  Register tmp3 = _tmp3->as_register();
   Register result = result_opr()->as_register();
 
   ShenandoahBarrierSet::assembler()->storeval_barrier(masm->masm(), newval, rscratch2);
 
   if (UseCompressedOops) {

@@ -45,11 +46,11 @@
     cmpval = tmp1;
     __ encode_heap_oop(tmp2, newval);
     newval = tmp2;
   }
 
-  ShenandoahBarrierSet::assembler()->cmpxchg_oop(masm->masm(), addr, cmpval, newval, /*acquire*/ false, /*release*/ true, /*weak*/ false, /*is_cae*/ false, result);
+  ShenandoahBarrierSet::assembler()->cmpxchg_oop(masm->masm(), addr, cmpval, newval, /*acquire*/ false, /*release*/ true, /*weak*/ false, /*is_cae*/ false, tmp3, result);
 }
 
 #undef __
 
 #ifdef ASSERT

@@ -70,14 +71,15 @@
       cmp_value.load_item();
       new_value.load_item();
 
       LIR_Opr t1 = gen->new_register(T_OBJECT);
       LIR_Opr t2 = gen->new_register(T_OBJECT);
+      LIR_Opr t3 = gen->new_register(T_OBJECT);
       LIR_Opr addr = access.resolved_addr()->as_address_ptr()->base();
       LIR_Opr result = gen->new_register(T_INT);
 
-      __ append(new LIR_OpShenandoahCompareAndSwap(addr, cmp_value.result(), new_value.result(), t1, t2, result));
+      __ append(new LIR_OpShenandoahCompareAndSwap(addr, cmp_value.result(), new_value.result(), t1, t2, t3, result));
       return result;
     }
   }
   return BarrierSetC1::atomic_cmpxchg_at_resolved(access, cmp_value, new_value);
 }