Module traversals

Traversals over the IR.

Structs

• Dfs
  A depth-first traversal.
• DfsIter
  An iterator that yields pairs of (Event, ir::Block) items as it performs a depth-first traversal over its associated function.
• DfsPostOrderIter
  An iterator that yields ir::Block items during a depth-first, post-order traversal over its associated function.
• DfsPreOrderIter
  An iterator that yields ir::Block items during a depth-first, pre-order traversal over its associated function.

Enums

• Event
  A low-level DFS traversal event: either entering or exiting the traversal of a block.