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e6898ec751
Add a pass that sorts subprogs in topological order so that iterating subprog_topo_order[] walks leaf subprogs first, then their callers. This is computed as a DFS post-order traversal of the CFG. The pass runs after check_cfg() to ensure the CFG has been validated before traversing and after postorder has been computed to avoid walking dead code. Reviewed-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/r/20260403024422.87231-3-alexei.starovoitov@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>