Method named_reg_available

winch/codegen/src/regset.rs:118–125

Returns true if the specified register is allocatable.

(&self, reg: Reg)

    /// Returns true if the specified register is allocatable.
    pub fn named_reg_available(&self, reg: Reg) -> bool {
        let bitset = &self[reg.class()];
        assert!(reg.hw_enc() < bitset.max);
        let index = 1 << reg.hw_enc();

        (!bitset.allocatable & index) == 0
            || self.is_non_allocatable(reg.class(), reg.hw_enc().try_into().unwrap())
    }

    fn available(&self, class: RegClass) -> bool {
        let bitset = &self[class];