Fix a bug in block reordering/block compaction.

runtime/vm/intermediate_language.cc

 // Copyright (c) 2013, 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/bigint_operations.h"
 #include "vm/bit_vector.h"
 #include "vm/dart_entry.h"
 #include "vm/flow_graph_allocator.h"
@@ skipping 1602 matching lines @@
 // generation is located in intermediate_language_<arch>.cc
 
 #define __ compiler->assembler()->
 
 LocationSummary* GraphEntryInstr::MakeLocationSummary() const {
   UNREACHABLE();
   return NULL;
 }
 
 
-void GraphEntryInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
-  // Nothing to do.
-}
-
-
 LocationSummary* JoinEntryInstr::MakeLocationSummary() const {
   UNREACHABLE();
   return NULL;
 }
 
 
 void JoinEntryInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   __ Bind(compiler->GetJumpLabel(this));
   if (!compiler->is_optimizing()) {
     compiler->AddCurrentDescriptor(PcDescriptors::kDeopt,
@@ skipping 1030 matching lines @@
       return kCosRuntimeEntry;
     default:
       UNREACHABLE();
   }
   return kSinRuntimeEntry;
 }
 
 #undef __
 
 }  // namespace dart