Crankshaft: Create platform-independent lithium files, move LGapResolver and LGapNode there.

src/arm/lithium-arm.h

Index: src/arm/lithium-arm.h
===================================================================
--- src/arm/lithium-arm.h	(revision 6213)
+++ src/arm/lithium-arm.h	(working copy)
@@ -1,4 +1,4 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
+// Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
@@ -30,6 +30,7 @@
 
 #include "hydrogen.h"
 #include "lithium-allocator.h"
+#include "lithium.h"
 #include "safepoint-table.h"
 
 namespace v8 {
@@ -331,32 +332,6 @@
 };
 
 
-class LGapNode;
-
-
-class LGapResolver BASE_EMBEDDED {
- public:
-  LGapResolver(const ZoneList<LMoveOperands>* moves, LOperand* marker_operand);
-  const ZoneList<LMoveOperands>* ResolveInReverseOrder();
-
- private:
-  LGapNode* LookupNode(LOperand* operand);
-  bool CanReach(LGapNode* a, LGapNode* b, int visited_id);
-  bool CanReach(LGapNode* a, LGapNode* b);
-  void RegisterMove(LMoveOperands move);
-  void AddResultMove(LOperand* from, LOperand* to);
-  void AddResultMove(LGapNode* from, LGapNode* to);
-  void ResolveCycle(LGapNode* start);
-
-  ZoneList<LGapNode*> nodes_;
-  ZoneList<LGapNode*> identified_cycles_;
-  ZoneList<LMoveOperands> result_;
-  LOperand* marker_operand_;
-  int next_visited_id_;
-  int bailout_after_ast_id_;
-};
-
-
 class LParallelMove : public ZoneObject {
  public:
   LParallelMove() : move_operands_(4) { }