On Fri, 5 Jul 2024, Alex Coplan wrote:
> Hi,
>
> This adds a debug function to dump the dominator tree in dot/graphviz
> format. The idea is that the function can be called in GDB, the output
> copy/pasted into a .dot file and then rendered using graphviz.
>
> Bootstrapped/regtested on aarch64-linux-gnu, OK for trunk?
Can you follow other APIs here and rename and use a FILE * arg?
DEBUG_FUNCTION void
dot_dominance_tree (FILE *f, enum cdi_direction dir)
...
that way in gdb you can do
(gdb) p fopen ("/tmp/x.dot", "w")
(gdb) p dot_dominance_tree ($1, CDI_DOMINATORS);
(gdb0 p fclose ($1);
and then dot the file? It's also easier to use this from a
gdb python wrapper which can do the above as well. In other
places there's then an overload with a const char *fname argument
doing the fopen/fclose itself.
Thanks,
Richard.
> Thanks,
> Alex
>
> gcc/ChangeLog:
>
> * dominance.cc (debug_dominance_tree_dot): New.
>
--
Richard Biener <rguent...@suse.de>
SUSE Software Solutions Germany GmbH,
Frankenstrasse 146, 90461 Nuernberg, Germany;
GF: Ivo Totev, Andrew McDonald, Werner Knoblich; (HRB 36809, AG Nuernberg)
