Rename A64 port to ARM64 port

src/a64/lithium-gap-resolver-a64.h

-// Copyright 2013 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:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef V8_A64_LITHIUM_GAP_RESOLVER_A64_H_
-#define V8_A64_LITHIUM_GAP_RESOLVER_A64_H_
-
-#include "v8.h"
-
-#include "lithium.h"
-
-namespace v8 {
-namespace internal {
-
-class LCodeGen;
-class LGapResolver;
-
-class LGapResolver 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);
-
-  // If a cycle is found in the series of moves, save the blocking value to
-  // a scratch register.  The cycle must be found by hitting the root of the
-  // depth-first search.
-  void BreakCycle(int index);
-
-  // After a cycle has been resolved, restore the value from the scratch
-  // register to its proper destination.
-  void RestoreValue();
-
-  // Emit a move and remove it from the move graph.
-  void EmitMove(int index);
-
-  // Emit a move from one stack slot to another.
-  void EmitStackSlotMove(int index);
-
-  // Verify the move list before performing moves.
-  void Verify();
-
-  LCodeGen* cgen_;
-
-  // List of moves not yet resolved.
-  ZoneList<LMoveOperands> moves_;
-
-  int root_index_;
-  bool in_cycle_;
-  LOperand* saved_destination_;
-
-  // We use the root register as a scratch in a few places. When that happens,
-  // this flag is set to indicate that it needs to be restored.
-  bool need_to_restore_root_;
-};
-
-} }  // namespace v8::internal
-
-#endif  // V8_A64_LITHIUM_GAP_RESOLVER_A64_H_