Add a goto instruction to the IL use it to terminate basic blocks.

vm/intermediate_language.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/intermediate_language.h"
 
 #include "vm/bit_vector.h"
 #include "vm/flow_graph_builder.h"
 #include "vm/flow_graph_compiler.h"
 #include "vm/locations.h"
@@ skipping 152 matching lines @@
 
 void BranchInstr::SetInputAt(intptr_t i, Value* value) {
   if (i == 0) {
     value_ = value;
     return;
   }
   UNREACHABLE();
 }
 
 
+intptr_t GotoInstr::InputCount() const {
+  return 0;
+}
+
+
+Value* GotoInstr::InputAt(intptr_t i) const {
+  UNREACHABLE();
+  return NULL;
+}
+
+
+void GotoInstr::SetInputAt(intptr_t i, Value* value) {
+  UNREACHABLE();
+}
+
+
 intptr_t ParallelMoveInstr::InputCount() const {
   UNREACHABLE();
   return 0;
 }
 
 
 Value* ParallelMoveInstr::InputAt(intptr_t i) const {
   UNREACHABLE();
   return NULL;
 }
@@ skipping 1124 matching lines @@
   const ExternalLabel label(closure_function.ToCString(), stub.EntryPoint());
   compiler->GenerateCall(token_pos(), try_index(), &label,
                          PcDescriptors::kOther);
   __ Drop(2);  // Discard type arguments and receiver.
 }
 
 
 #undef __
 
 }  // namespace dart