Method reg_def

cranelift/codegen/src/machinst/reg.rs:442–444

Add a register def, at the end of the instruction (`After` position). Use only when this def will be written after all uses are read.

(&mut self, reg: &mut Writable<impl AsMut<Reg>>)

    /// position). Use only when this def will be written after all
    /// uses are read.
    fn reg_def(&mut self, reg: &mut Writable<impl AsMut<Reg>>) {
        self.reg_maybe_fixed(reg.reg.as_mut(), OperandKind::Def, OperandPos::Late);
    }

    /// Add a register "early def", which logically occurs at the
    /// beginning of the instruction, alongside all uses. Use this