Fuse Comparison->BooleanNegate->Branch.

runtime/vm/intermediate_language.h

 // 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.
 
 #ifndef VM_INTERMEDIATE_LANGUAGE_H_
 #define VM_INTERMEDIATE_LANGUAGE_H_
 
 #include "vm/allocation.h"
 #include "vm/ast.h"
 #include "vm/growable_array.h"
@@ skipping 2294 matching lines @@
 };
 
 
 class BranchInstr : public InstructionWithInputs {
  public:
   explicit BranchInstr(Value* value)
       : InstructionWithInputs(),
         value_(value),
         true_successor_(NULL),
         false_successor_(NULL),
-        is_fused_with_comparison_(false) { }
+        is_fused_with_comparison_(false),
+        is_negated_(false) { }
 
   DECLARE_INSTRUCTION(Branch)
 
   Value* value() const { return value_; }
   TargetEntryInstr* true_successor() const { return true_successor_; }
   TargetEntryInstr* false_successor() const { return false_successor_; }
 
   TargetEntryInstr** true_successor_address() { return &true_successor_; }
   TargetEntryInstr** false_successor_address() { return &false_successor_; }
 
@@ skipping 16 matching lines @@
   virtual void EmitNativeCode(FlowGraphCompiler* compiler);
 
   void EmitBranchOnCondition(FlowGraphCompiler* compiler,
                              Condition true_condition);
 
   void MarkFusedWithComparison() {
     is_fused_with_comparison_ = true;
   }
 
   bool is_fused_with_comparison() const { return is_fused_with_comparison_; }
+  bool is_negated() const { return is_negated_; }
+  void set_is_negated(bool value) { is_negated_ = value; }
 
  private:
   Value* value_;
   TargetEntryInstr* true_successor_;
   TargetEntryInstr* false_successor_;
   bool is_fused_with_comparison_;
+  bool is_negated_;
 
   DISALLOW_COPY_AND_ASSIGN(BranchInstr);
 };
 
 #undef DECLARE_INSTRUCTION
 
 
 // Visitor base class to visit each instruction and computation in a flow
 // graph as defined by a reversed list of basic blocks.
 class FlowGraphVisitor : public ValueObject {
@@ skipping 24 matching lines @@
   const GrowableArray<BlockEntryInstr*>& block_order_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FlowGraphVisitor);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_INTERMEDIATE_LANGUAGE_H_