walkoptree

Recursively walk an optree, calling $method on each op.

Synopsis

B::walkoptree(B::main_root, "visit");

Each op is blessed into its B::*OP class and then $method is dispatched on it. Children are visited after the parent. Back-end classes such as B::Concise define a visit method on their own package and call walkoptree to drive tree-traversal without writing the walk themselves.