VM: Move representation selection code out of the flow graph optimizer.

runtime/vm/flow_graph_optimizer.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_FLOW_GRAPH_OPTIMIZER_H_
 #define VM_FLOW_GRAPH_OPTIMIZER_H_
 
 #include "vm/intermediate_language.h"
 #include "vm/flow_graph.h"
 
@@ skipping 27 matching lines @@
   void ApplyICData();
 
   // Use propagated class ids to optimize, replace or eliminate instructions.
   void ApplyClassIds();
 
   // Optimize (a << b) & c pattern: if c is a positive Smi or zero, then the
   // shift can be a truncating Smi shift-left and result is always Smi.
   // Merge instructions (only per basic-block).
   void TryOptimizePatterns();
 
-  // Returns true if any instructions were canonicalized away.
-  bool Canonicalize();
-
-  void EliminateDeadPhis();
-
-  void SelectRepresentations();
-
-  void WidenSmiToInt32();
-
-  // Remove environments from the instructions which do not deoptimize.
-  void EliminateEnvironments();
-
   virtual void VisitStaticCall(StaticCallInstr* instr);
   virtual void VisitInstanceCall(InstanceCallInstr* instr);
   virtual void VisitStoreInstanceField(StoreInstanceFieldInstr* instr);
   virtual void VisitAllocateContext(AllocateContextInstr* instr);
   virtual void VisitLoadCodeUnits(LoadCodeUnitsInstr* instr);
 
   void InsertBefore(Instruction* next,
                     Instruction* instr,
                     Environment* env,
                     FlowGraph::UseKind use_kind) {
@@ skipping 61 matching lines @@
                    Environment* deopt_environment,
                    Instruction* insert_before);
 
   // Add a class check for a call's first argument immediately before the
   // call, using the call's IC data to determine the check, and the call's
   // deopt ID and deoptimization environment if the check fails.
   void AddReceiverCheck(InstanceCallInstr* call);
 
   void ReplaceCall(Definition* call, Definition* replacement);
 
-  void InsertConversionsFor(Definition* def);
-
-  void ConvertUse(Value* use, Representation from);
-  void ConvertEnvironmentUse(Value* use, Representation from);
-
-  void InsertConversion(Representation from,
-                        Representation to,
-                        Value* use,
-                        bool is_environment_use);
 
   bool InstanceCallNeedsClassCheck(InstanceCallInstr* call,
                                    RawFunction::Kind kind) const;
 
   bool InlineFloat32x4Getter(InstanceCallInstr* call,
                              MethodRecognizer::Kind getter);
   bool InlineFloat64x2Getter(InstanceCallInstr* call,
                              MethodRecognizer::Kind getter);
   bool InlineInt32x4Getter(InstanceCallInstr* call,
                             MethodRecognizer::Kind getter);
@@ skipping 40 matching lines @@
 
   GrowableArray<intptr_t>* inlining_black_list_;
 
   DISALLOW_COPY_AND_ASSIGN(FlowGraphOptimizer);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_FLOW_GRAPH_OPTIMIZER_H_