Add higher-level accesses to Environment. Print flow graph after register allocation. Most interest…

runtime/vm/flow_graph_optimizer.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_optimizer.h"
 
 #include "vm/flow_graph_builder.h"
 #include "vm/il_printer.h"
 #include "vm/object_store.h"
 
 namespace dart {
 
 DECLARE_FLAG(bool, enable_type_checks);
-DECLARE_FLAG(bool, print_flow_graph);
 DECLARE_FLAG(bool, trace_optimization);
 
 void FlowGraphOptimizer::ApplyICData() {
   VisitBlocks();
-  if (FLAG_print_flow_graph) {
-    OS::Print("After Optimizations:\n");
-    FlowGraphPrinter printer(Function::Handle(), block_order_);
-    printer.PrintBlocks();
-  }
 }
 
 
 static bool ICDataHasReceiverClassId(const ICData& ic_data, intptr_t class_id) {
   ASSERT(ic_data.num_args_tested() > 0);
   for (intptr_t i = 0; i < ic_data.NumberOfChecks(); i++) {
     const intptr_t test_class_id = ic_data.GetReceiverClassIdAt(i);
     if (test_class_id == class_id) {
       return true;
     }
@@ skipping 508 matching lines @@
       LocationSummary* locs = it.Current()->locs();
       if ((locs != NULL) && locs->is_call()) {
         is_leaf_ = false;
         return;
       }
     }
   }
 }
 
 }  // namespace dart