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

[aoliva at gcc dot gnu.org]

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

--- Comment #8 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Created attachment 40990
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40990&action=edit
untested patch that appears to fix the problem

Bernd,

Thanks for bringing it to my attention.  Sorry about the delay; it's been a
complicated week.

This patch fixes the infinite recursion, hopefully without introducing any
problems.  However, I'm afraid I may not have time to finish testing this
before going mostly offline till nearly the end of the month, so could you (or
anyone else) by any chance run with it and turn it into a contributable patch,
with testcase, regression testing, ChangeLog entry and everything else one
might need?  Thanks, appreciated.