Method is_reachable

cranelift/codegen/src/dominator_tree/simple.rs:51–53

Is `block` reachable from the entry block?

(&self, block: Block)

impl SimpleDominatorTree {
    /// Is `block` reachable from the entry block?
    pub fn is_reachable(&self, block: Block) -> bool {
        self.nodes[block].rpo_number != 0
    }

    /// Get the CFG post-order of blocks that was used to compute the dominator tree.
    ///