Method check_fixed_conflict

src/debug_utils/generic_function/arbitrary.rs:440–453

Checks if the given register can be used as an early/late fixed-register constraint, and if successful, marks all of the register's sub-units as in-use for the current instruction.

(&mut self, reg: PhysReg, early: bool, late: bool)

    /// constraint, and if successful, marks all of the register's sub-units as
    /// in-use for the current instruction.
    fn check_fixed_conflict(&mut self, reg: PhysReg, early: bool, late: bool) -> bool {
        if self.reginfo.reg_units(reg).any(|unit| {
            (early && self.early_fixed.contains(unit)) || (late && self.late_fixed.contains(unit))
        }) {
            return false;
        }
        if early {
            self.early_fixed.extend(self.reginfo.reg_units(reg));
        }
        if late {
            self.late_fixed.extend(self.reginfo.reg_units(reg));
        }
        true
    }

    /// Returns a value for use as an `OperandKind::Use` in the given block.
    ///