[Bug debug/80025] [5/6/7 Regression] ICE w/ -O2 (-O3, -Ofast) -g -ftracer (infinite recursion in rtx_equal_for_cselib_1)

[bernds at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80025

--- Comment #12 from Bernd Schmidt <bernds at gcc dot gnu.org> ---
That still doesn't seem to address the root cause though? Isn't the problem
that this reversible mappings code can create cycles and we should avoid
creating these in the first place?