Implement native _List. constructor in the flow-graph builder.

runtime/vm/flow_graph_builder.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/flow_graph_builder.h"
 
 #include "lib/invocation_mirror.h"
 #include "vm/ast_printer.h"
 #include "vm/bit_vector.h"
 #include "vm/class_finalizer.h"
@@ skipping 3111 matching lines @@
         Value* data = Bind(data_load);
         LoadFieldInstr* length_load = new(I) LoadFieldInstr(
             data,
             Array::length_offset(),
             Type::ZoneHandle(I, Type::SmiType()),
             node->token_pos());
         length_load->set_result_cid(kSmiCid);
         length_load->set_recognized_kind(MethodRecognizer::kObjectArrayLength);
         return ReturnDefinition(length_load);
       }
+      case MethodRecognizer::kObjectArrayAllocate: {
+        LocalVariable* type_args_parameter =
+            node->scope()->LookupVariable(Symbols::TypeArgumentsParameter(),
+                                          true);
+        Value* element_type = Bind(new(I) LoadLocalInstr(*type_args_parameter));
+        LocalVariable* length_parameter =
+            node->scope()->LookupVariable(Symbols::Length(), true);
+        Value* length = Bind(new(I) LoadLocalInstr(*length_parameter));
+        CreateArrayInstr* create_array =
+            new CreateArrayInstr(node->token_pos(), element_type, length);
+        return ReturnDefinition(create_array);
+      }
       default:
         break;
     }
   }
   InlineBailout("EffectGraphVisitor::VisitNativeBodyNode");
   NativeCallInstr* native_call = new(I) NativeCallInstr(node);
   ReturnDefinition(native_call);
 }
 
 
@@ skipping 863 matching lines @@
   Report::MessageF(Report::kBailout,
                    Script::Handle(function.script()),
                    function.token_pos(),
                    "FlowGraphBuilder Bailout: %s %s",
                    String::Handle(function.name()).ToCString(),
                    reason);
   UNREACHABLE();
 }
 
 }  // namespace dart