Move Hydrogen and Lithium to src/crankshaft/

src/x64/lithium-gap-resolver-x64.h

-// Copyright 2011 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef V8_X64_LITHIUM_GAP_RESOLVER_X64_H_
-#define V8_X64_LITHIUM_GAP_RESOLVER_X64_H_
-
-#include "src/lithium.h"
-
-namespace v8 {
-namespace internal {
-
-class LCodeGen;
-class LGapResolver;
-
-class LGapResolver final BASE_EMBEDDED {
- public:
-  explicit LGapResolver(LCodeGen* owner);
-
-  // Resolve a set of parallel moves, emitting assembler instructions.
-  void Resolve(LParallelMove* parallel_move);
-
- private:
-  // Build the initial list of moves.
-  void BuildInitialMoveList(LParallelMove* parallel_move);
-
-  // Perform the move at the moves_ index in question (possibly requiring
-  // other moves to satisfy dependencies).
-  void PerformMove(int index);
-
-  // Emit a move and remove it from the move graph.
-  void EmitMove(int index);
-
-  // Execute a move by emitting a swap of two operands.  The move from
-  // source to destination is removed from the move graph.
-  void EmitSwap(int index);
-
-  // Verify the move list before performing moves.
-  void Verify();
-
-  LCodeGen* cgen_;
-
-  // List of moves not yet resolved.
-  ZoneList<LMoveOperands> moves_;
-};
-
-}  // namespace internal
-}  // namespace v8
-
-#endif  // V8_X64_LITHIUM_GAP_RESOLVER_X64_H_