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src/compiler/gap-resolver.h

Index: src/compiler/gap-resolver.h
diff --git a/src/compiler/gap-resolver.h b/src/compiler/gap-resolver.h
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+// Copyright 2014 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_COMPILER_GAP_RESOLVER_H_
+#define V8_COMPILER_GAP_RESOLVER_H_
+
+#include "src/compiler/instruction.h"
+
+namespace v8 {
+namespace internal {
+namespace compiler {
+
+class GapResolver V8_FINAL {
+ public:
+  // Interface used by the gap resolver to emit moves and swaps.
+  class Assembler {
+   public:
+    virtual ~Assembler() {}
+
+    // Assemble move.
+    virtual void AssembleMove(InstructionOperand* source,
+                              InstructionOperand* destination) = 0;
+    // Assemble swap.
+    virtual void AssembleSwap(InstructionOperand* source,
+                              InstructionOperand* destination) = 0;
+  };
+
+  explicit GapResolver(Assembler* assembler) : assembler_(assembler) {}
+
+  // Resolve a set of parallel moves, emitting assembler instructions.
+  void Resolve(ParallelMove* parallel_move) const;
+
+ private:
+  // Perform the given move, possibly requiring other moves to satisfy
+  // dependencies.
+  void PerformMove(ZoneList<MoveOperands>* moves, MoveOperands* move) const;
+
+  // Assembler used to emit moves and save registers.
+  Assembler* const assembler_;
+};
+}
+}
+}  // namespace v8::internal::compiler
+
+#endif  // V8_COMPILER_GAP_RESOLVER_H_