Rename FlowGraphOptimizer -> JitOptimizer, clean up optimizer code.

runtime/vm/intermediate_language.h

 // 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.
 
 #ifndef VM_INTERMEDIATE_LANGUAGE_H_
 #define VM_INTERMEDIATE_LANGUAGE_H_
 
 #include "vm/allocation.h"
 #include "vm/ast.h"
 #include "vm/growable_array.h"
@@ skipping 2824 matching lines @@
     // Instance calls that are specialized by the optimizer need a
     // deoptimization descriptor before the call.
     return true;
   }
 
   virtual EffectSet Effects() const { return EffectSet::All(); }
 
   PRINT_OPERANDS_TO_SUPPORT
 
  protected:
-  friend class FlowGraphOptimizer;
+  friend class JitOptimizer;
   void set_ic_data(ICData* value) { ic_data_ = value; }
 
  private:
   const ICData* ic_data_;
   const TokenPosition token_pos_;
   const String& function_name_;
   const Token::Kind token_kind_;  // Binary op, unary op, kGET or kILLEGAL.
   ZoneGrowableArray<PushArgumentInstr*>* const arguments_;
   const Array& argument_names_;
   const intptr_t checked_argument_count_;
@@ skipping 757 matching lines @@
 
   bool IsUnboxedStore() const;
 
   bool IsPotentialUnboxedStore() const;
 
   virtual Representation RequiredInputRepresentation(intptr_t index) const;
 
   PRINT_OPERANDS_TO_SUPPORT
 
  private:
-  friend class FlowGraphOptimizer;  // For ASSERT(initialization_).
+  friend class JitOptimizer;  // For ASSERT(initialization_).
 
   bool CanValueBeSmi() const {
     const intptr_t cid = value()->Type()->ToNullableCid();
     // Write barrier is skipped for nullable and non-nullable smis.
     ASSERT(cid != kSmiCid);
     return (cid == kDynamicCid);
   }
 
   const Field& field_;
   intptr_t offset_in_bytes_;
@@ skipping 4575 matching lines @@
   LocationSummary* Name::MakeLocationSummary(Zone* zone, bool opt) const {    \
     UNIMPLEMENTED();                                                          \
     return NULL;                                                              \
   }                                                                           \
   void Name::EmitNativeCode(FlowGraphCompiler* compiler) { UNIMPLEMENTED(); }
 
 
 }  // namespace dart
 
 #endif  // VM_INTERMEDIATE_LANGUAGE_H_