Add a global graph entry.

runtime/vm/flow_graph_compiler_x64.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/globals.h"  // Needed here to get TARGET_ARCH_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "lib/error.h"
@@ skipping 1158 matching lines @@
       // next block in the list.  Otherwise, we need a jump.
       if ((i == block_order_.length() - 1) ||
           (block_order_[i + 1] != successor)) {
         __ jmp(&block_info_[successor->postorder_number()]->label);
       }
     }
   }
 }
 
 
+void FlowGraphCompiler::VisitGraphEntry(GraphEntryInstr* instr) {
+  // Nothing to do.
+}
+
+
 void FlowGraphCompiler::VisitJoinEntry(JoinEntryInstr* instr) {
   __ Bind(&block_info_[instr->postorder_number()]->label);
 }
 
 
 void FlowGraphCompiler::VisitTargetEntry(TargetEntryInstr* instr) {
   __ Bind(&block_info_[instr->postorder_number()]->label);
   if (instr->HasTryIndex()) {
     exception_handlers_list_->AddHandler(instr->try_index(),
                                          assembler_->CodeSize());
@@ skipping 522 matching lines @@
   ASSERT(exception_handlers_list_ != NULL);
   const ExceptionHandlers& handlers = ExceptionHandlers::Handle(
       exception_handlers_list_->FinalizeExceptionHandlers(code.EntryPoint()));
   code.set_exception_handlers(handlers);
 }
 
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64