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The following makes dumping of a function as graph work as intended when specifying a function other than cfun. Unfortunately the loop and the dominance APIs are not set up to work for other functions than cfun so you won't get any fancy loop dumps but the non-loop dump works up to reaching mark_dfs_back_edges which I trivially made function aware and adjusted current callers with a wrapper. With all this, doing dot-fn id->src_cfun from the debugger when debugging inlining works. Previously you got a strange mix of the src and dest functions visualized ;) 2022-01-28 Richard Biener <rguenther@suse.de> * cfganal.h (mark_dfs_back_edges): Provide API with struct function argument. * cfganal.cc (mark_dfs_back_edges): Take a struct function to work on, add a wrapper passing cfun. * graph.cc (draw_cfg_nodes_no_loops): Replace stray cfun uses with fun which is already passed. (draw_cfg_edges): Likewise. (draw_cfg_nodes_for_loop): Do not use draw_cfg_nodes_for_loop for fun != cfun.
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