Executes pre before visiting the predecessor of a node, post after.
irg_walk uses the visited flag in irg and the nodes to determine visited
nodes. It executes inc_irg_visited(current_ir_graph) to generate a new
Executes pre before visiting the predecessor of a node, post after.
irg_walk uses the visited flag in irg and the nodes to determine visited
nodes. It executes inc_irg_visited(current_ir_graph) to generate a new