src/tint/lang/core/ir/phony.h

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#ifndef SRC_TINT_LANG_CORE_IR_PHONY_H_
#define SRC_TINT_LANG_CORE_IR_PHONY_H_

#include <string>

#include "src/tint/lang/core/ir/operand_instruction.h"

namespace tint::core::ir {

/// Phony assignment in the IR.
class Phony : public Castable<Phony, OperandInstruction<1, 0>> {
  public:
    /// The offset in Operands() for the value
    static constexpr size_t kValueOperandOffset = 0;

    /// The fixed number of operands accepted by phony instructions
    static constexpr size_t kNumOperands = 1;

    /// The fixed number of results returned by phony instructions
    static constexpr size_t kNumResults = 0;

    /// Constructor
    /// @param id the instruction id
    /// @param value the assigned value
    explicit Phony(Id id, Value* value);
    ~Phony() override;

    /// @copydoc Instruction::Clone()
    Phony* Clone(CloneContext& ctx) override;

    /// @returns the value
    const ir::Value* Value() const { return Operand(kValueOperandOffset); }

    /// @returns the friendly name for the instruction
    std::string FriendlyName() const override { return "phony"; }
};

}  // namespace tint::core::ir

#endif  // SRC_TINT_LANG_CORE_IR_PHONY_H_