Method allocate

winch/codegen/src/regset.rs:132–136

(&mut self, class: RegClass, index: u64)

    }

    fn allocate(&mut self, class: RegClass, index: u64) {
        if !self.is_non_allocatable(class, index) {
            self[class].allocatable &= !(1 << index);
        }
    }

    fn is_non_allocatable(&self, class: RegClass, index: u64) -> bool {
        let bitset = &self[class];