Adds LoadClassIdInstr to DBC

runtime/vm/simulator_dbc.cc

Index: runtime/vm/simulator_dbc.cc
diff --git a/runtime/vm/simulator_dbc.cc b/runtime/vm/simulator_dbc.cc
index 7329114a00f6fe899e2b76a7f240d0ef8362ae50..8ece205725f2b46223e623b1c5ac10b1b2334e1b 100644
--- a/runtime/vm/simulator_dbc.cc
+++ b/runtime/vm/simulator_dbc.cc
@@ -1778,6 +1778,21 @@ RawObject* Simulator::Call(const Code& code,
   }
 
   {
+    BYTECODE(LoadClassId, A_D);
+    const uint16_t object_reg = rD;
+    RawObject* obj = static_cast<RawObject*>(FP[object_reg]);
+    FP[rA] = SimulatorHelpers::GetClassIdAsSmi(obj);
+    DISPATCH();
+  }
+
+  {
+    BYTECODE(LoadClassIdTOS, 0);
+    RawObject* obj = static_cast<RawObject*>(SP[0]);
+    SP[0] = SimulatorHelpers::GetClassIdAsSmi(obj);
+    DISPATCH();
+  }
+
+  {
     BYTECODE(StoreIndexedTOS, 0);
     SP -= 3;
     RawArray* array = static_cast<RawArray*>(SP[1]);