Method insert

cranelift/codegen/src/ir/memflags.rs:445–457

Insert new mem flags into this set. Returns an existing `MemFlags` if the data already exists.

(&mut self, data: MemFlagsData)

    ///
    /// Returns an existing `MemFlags` if the data already exists.
    pub fn insert(&mut self, data: MemFlagsData) -> Result<MemFlags, MemFlagsSetOverflow> {
        if let Some(&existing) = self.dedupe_map.get(&data) {
            return Ok(existing);
        }
        let next = u32::try_from(self.mem_flags.len())
            .ok()
            .and_then(MemFlags::with_number)
            .ok_or(MemFlagsSetOverflow)?;
        let key = self.mem_flags.push(data);
        debug_assert_eq!(key, next);
        self.dedupe_map.insert(data, key);
        Ok(key)
    }

    /// Insert new mem flags into this set, panicking if the index does not fit.
    pub fn insert_unchecked(&mut self, data: MemFlagsData) -> MemFlags {