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

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#ifndef SRC_TINT_LANG_CORE_IR_UNARY_H_
#define SRC_TINT_LANG_CORE_IR_UNARY_H_

#include <string>

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

// Forward declarations
namespace tint::core::intrinsic {
struct TableData;
}

namespace tint::core::ir {

/// The abstract base class for dialect-specific unary-op instructions in the IR.
class Unary : public Castable<Unary, OperandInstruction<1, 1>> {
  public:
    /// The offset in Operands() for the value
    static constexpr size_t kValueOperandOffset = 0;

    /// The fixed number of results returned by unary instructions
    static constexpr size_t kNumResults = 1;

    /// The fixed number of operands expected for unary instructions
    static constexpr size_t kNumOperands = 1;

    /// Constructor (no results, no operands)
    /// @param id the instruction id
    explicit Unary(Id id);

    /// Constructor
    /// @param id the instruction id
    /// @param result the result value
    /// @param op the unary operator
    /// @param val the input value for the instruction
    Unary(Id id, InstructionResult* result, UnaryOp op, Value* val);

    ~Unary() override;

    /// @returns the value for the instruction
    Value* Val() { return Operand(kValueOperandOffset); }

    /// @returns the value for the instruction
    const Value* Val() const { return Operand(kValueOperandOffset); }

    /// @returns the unary operator
    UnaryOp Op() const { return op_; }

    /// @param op the new unary operator
    void SetOp(UnaryOp op) { op_ = op; }

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

    /// @returns the table data to validate this builtin
    virtual const core::intrinsic::TableData& TableData() const = 0;

  private:
    UnaryOp op_ = UnaryOp::kComplement;
};

}  // namespace tint::core::ir

#endif  // SRC_TINT_LANG_CORE_IR_UNARY_H_