Method contains

cranelift/codegen/src/ir/memflags.rs:546–548

Returns `true` if this set already contains a region with the given `user_id`.

(&self, user_id: u32)

    /// Returns `true` if this set already contains a region with the given
    /// `user_id`.
    pub fn contains(&self, user_id: u32) -> bool {
        self.dedupe_map.contains_key(&user_id)
    }

    /// Returns `true` if the given alias region reference is valid.
    pub fn is_valid(&self, ar: AliasRegion) -> bool {