src/tint/api/common/subgroup_matrix.h

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#ifndef SRC_TINT_API_COMMON_SUBGROUP_MATRIX_H_
#define SRC_TINT_API_COMMON_SUBGROUP_MATRIX_H_

#include <unordered_set>

#include "src/tint/utils/math/hash.h"

namespace tint {

enum class SubgroupMatrixType : uint8_t {
    kF16 = 0,
    kF32,
    kU8,
    kI8,
    kU32,
    kI32,
};

struct SubgroupMatrixMultiply {
    uint32_t M;
    uint32_t N;
    uint32_t K;

    SubgroupMatrixType input_type;
    SubgroupMatrixType output_type;

    bool operator==(const SubgroupMatrixMultiply& o) const {
        return M == o.M && N == o.N && K == o.K && input_type == o.input_type &&
               output_type == o.output_type;
    }
};

enum class SubgroupMatrixDirection : uint8_t {
    kInput,
    kResult,
};

struct SubgroupMatrixConfig {
    uint32_t columns;
    uint32_t rows;
    SubgroupMatrixType type;
    SubgroupMatrixDirection direction;

    bool operator==(const SubgroupMatrixConfig& o) const {
        return columns == o.columns && rows == o.rows && type == o.type && direction == o.direction;
    }
};

}  // namespace tint

template <>
class std::hash<tint::SubgroupMatrixMultiply> {
  public:
    inline std::size_t operator()(const tint::SubgroupMatrixMultiply& sm) const {
        return tint::Hash(sm.M, sm.N, sm.K, sm.input_type, sm.output_type);
    }
};

template <>
class std::hash<tint::SubgroupMatrixConfig> {
  public:
    inline std::size_t operator()(const tint::SubgroupMatrixConfig sm) const {
        return tint::Hash(sm.columns, sm.rows, sm.type, sm.direction);
    }
};

namespace tint {

struct SubgroupMatrixInfo {
    std::unordered_set<SubgroupMatrixMultiply> multiplies;
    std::unordered_set<SubgroupMatrixConfig> configs;
};

}  // namespace tint

#endif  // SRC_TINT_API_COMMON_SUBGROUP_MATRIX_H_