https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112572
--- Comment #27 from Sam James <sjames at gcc dot gnu.org> --- (In reply to Andrew Pinski from comment #18) > This fixes the issue for me: > ``` > diff --git a/gcc/compare-elim.cc b/gcc/compare-elim.cc > [...] This solves both pipewire (unreported, was working on reducing it; found it needed -fstack-protector-strong and I think PIE) and LLVM failures. Thank you Andrew & thanks Sergei for looking at it too. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112613#c3 is an interesting comment wrt checking. Is that feasible? It would be nice if this was catchable with --enable-checking=rtl or --enable-checking=df (I don't test with this regularly, but it would've been helpful after seeing the bisect result), especially given there's some clear (possible) misuse.
