impl<'ctx, S> Hash for DependencyGraph<'ctx, S> { fn hash<H: Hasher>(&self, state: &mut H) { let mut ops = Vec::with_capacity(self.edges.len()); for (from, nodes) in self.edges.values() { ops.push(from.get_opcode()); for node in nodes { ops.push(node.get_opcode()); } } ops.sort_unstable_by_key(|&op| op as u32); ops.hash(state); } }