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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 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_
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