Method to_virtual_reg

cranelift/codegen/src/machinst/reg.rs:93–101

Get the virtual (non-physical) register, if this register is one.

(self)

    /// Get the virtual (non-physical) register, if this register is
    /// one.
    pub fn to_virtual_reg(self) -> Option<VirtualReg> {
        if self.to_spillslot().is_some() {
            None
        } else if pinned_vreg_to_preg(self.0.into()).is_none() {
            Some(VirtualReg(self.0.into()))
        } else {
            None
        }
    }

    /// Get the spillslot, if this register is one.
    pub fn to_spillslot(self) -> Option<SpillSlot> {