Emit switchable instance calls when we don't know the complete set of receiver classes for a call s…

runtime/vm/flow_graph_compiler.cc

Index: runtime/vm/flow_graph_compiler.cc
diff --git a/runtime/vm/flow_graph_compiler.cc b/runtime/vm/flow_graph_compiler.cc
index 4e0d2c773a9e85398e0f0a3c5988db5f30b6b7c4..7d8e18a60625c07261cd8232473ee2c46d6c7184 100644
--- a/runtime/vm/flow_graph_compiler.cc
+++ b/runtime/vm/flow_graph_compiler.cc
@@ -1915,20 +1915,8 @@ void FlowGraphCompiler::EmitPolymorphicInstanceCall(
                       deopt_id, token_pos, locs, true);
       assembler()->Bind(&ok);
     } else {
-      // Instead of deoptimizing, do a megamorphic call when no matching
-      // cid found.
-      Label ok;
-      MegamorphicSlowPath* slow_path =
-        new MegamorphicSlowPath(ic_data, argument_count, deopt_id,
-                                token_pos, locs, CurrentTryIndex());
-      AddSlowPathCode(slow_path);
-      EmitTestAndCall(ic_data, argument_count, argument_names,
-                      slow_path->entry_label(),  // No cid match.
-                      &ok,                       // Found cid.
-                      deopt_id, token_pos, locs, false);
-
-      assembler()->Bind(slow_path->exit_label());
-      assembler()->Bind(&ok);
+      EmitSwitchableInstanceCall(ic_data, argument_count,
+                                 deopt_id, token_pos, locs);
     }
   }
 }