Method constraint

src/function.rs:487–495

(self)

    #[inline]
    #[must_use]
    pub fn constraint(self) -> OperandConstraint {
        let index = self.constraint as usize & (MAX_PHYSREGS - 1);
        match self.constraint >> 14 {
            0 => OperandConstraint::Class(RegClass::new(index)),
            1 => OperandConstraint::Fixed(PhysReg::new(index)),
            2 => OperandConstraint::Reuse(index),
            _ => unreachable!(),
        }
    }
}

impl fmt::Debug for Operand {