https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110874
--- Comment #6 from David Binderman <dcb314 at hotmail dot com> --- (In reply to Andrew Pinski from comment #4) > There is a stack overflow while executing the FRE pass. I can confirm over 100,000 stack frames. Which -f flag causes the FRE pass to be executed ? I assume it is in -O2, but not in -O1.