Method decode

src/internal/allocator/queue.rs:97–114

Decodes an entry.

(self)

    /// Decodes an entry.
    fn decode(self) -> (VirtRegOrGroup, Stage) {
        // Group size has 1 subtracted from it in the encoding to fit in 3 bits.
        let group_size = ((self.bits >> 59) & 0b111) + 1;
        let stage = if self.bits >> 63 != 0 {
            Stage::Evict
        } else {
            Stage::Split
        };
        let index = self.bits as u32 as usize;
        let vreg_or_group = if group_size == 1 {
            let vreg = VirtReg::new(index);
            VirtRegOrGroup::Reg(vreg)
        } else {
            let group = VirtRegGroup::new(index);
            VirtRegOrGroup::Group(group)
        };
        (vreg_or_group, stage)
    }
}

/// Priority queue of virtual registers and virtual register groups that need