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// SPDX-License-Identifier: GPL-3.0-or-later
#ifndef RCC_CODEGEN_MACHINECOMBINERPATTERN_H
#define RCC_CODEGEN_MACHINECOMBINERPATTERN_H
#include "rcc/CodeGen/MachineIRTypes.h"
#include "rcc/Support/Error.h"
#include <cstddef>
#include <span>
#include <string>
#include <unordered_map>
#include <vector>
namespace rcc {
struct MachineCombinerPattern final {
std::string Name;
Opcode RootOpcode;
Opcode ProducerOpcode;
Opcode ReplacementOpcode;
std::size_t ProducerOperand = 0;
std::size_t AddendOperand = 0;
};
class TargetMachineCombinerInfo final {
public:
[[nodiscard]] static Expected<TargetMachineCombinerInfo>
create(std::vector<MachineCombinerPattern> Patterns);
[[nodiscard]] std::span<const MachineCombinerPattern> patterns(Opcode RootOpcode) const noexcept;
private:
explicit TargetMachineCombinerInfo(std::vector<MachineCombinerPattern> Patterns)
: Patterns(std::move(Patterns)) {}
std::vector<MachineCombinerPattern> Patterns;
std::unordered_map<Opcode, std::vector<MachineCombinerPattern>> MatchTable;
};
} // namespace rcc
#endif // RCC_CODEGEN_MACHINECOMBINERPATTERN_H
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