Refactored FlowGraphBuilder into a separate FlowGraph representation.

runtime/vm/flow_graph_compiler.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_XXX.
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/dart_entry.h"
 #include "vm/debugger.h"
@@ skipping 58 matching lines @@
     builder.AddCopy(deoptimization_env_->LocationAt(i), *values[i], slot_ix++);
   }
 
   const DeoptInfo& deopt_info = DeoptInfo::Handle(builder.CreateDeoptInfo());
   return deopt_info.raw();
 }
 
 
 FlowGraphCompiler::FlowGraphCompiler(
     Assembler* assembler,
-    const ParsedFunction& parsed_function,
-    const GrowableArray<BlockEntryInstr*>& block_order,
+    const FlowGraph& flow_graph,
     bool is_optimizing,
     bool is_ssa,
     bool is_leaf)
     : assembler_(assembler),
-      parsed_function_(parsed_function),
-      block_order_(block_order),
+      parsed_function_(flow_graph.parsed_function()),
+      block_order_(flow_graph.reverse_postorder()),
       current_block_(NULL),
       exception_handlers_list_(NULL),
       pc_descriptors_list_(NULL),
       stackmap_table_builder_(is_ssa ? new StackmapTableBuilder() : NULL),
-      block_info_(block_order.length()),
+      block_info_(block_order_.length()),
       deopt_stubs_(),
       object_table_(GrowableObjectArray::Handle(GrowableObjectArray::New())),
       is_optimizing_(is_optimizing),
       is_ssa_(is_ssa),
       is_dart_leaf_(is_leaf),
       bool_true_(Bool::ZoneHandle(Bool::True())),
       bool_false_(Bool::ZoneHandle(Bool::False())),
       double_class_(Class::ZoneHandle(
           Isolate::Current()->object_store()->double_class())),
       frame_register_allocator_(this, is_optimizing, is_ssa),
@@ skipping 773 matching lines @@
       return;
     }
   }
 
   // This move is not blocked.
   EmitMove(index);
 }
 
 
 }  // namespace dart