https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113907
--- Comment #67 from Jakub Jelinek <jakub at gcc dot gnu.org> --- (In reply to Martin Jambor from comment #66) > Created attachment 57750 [details] > Patch comparing jump functions > > I'm testing this patch. (Not sure how to best check that it does not > inadvertently pessimize ICF too much, except for ICF testcases.) Bet modify the patch slightly (for testing only), so instead of those 3 return_false_with_msg it would just set some flag somewhere that the pair is not ICF optimizable, then after the early return false in sem_function::merge check that flag and log into some /tmp/ file using appending if the ICF merge would be done and the flag wasn't set, or if the ICF merge wouldn't be done (and in that case return false too), bootstrap/regtest with such patch, plus build a few other packages (firefox, libreoffice) and then get statistics from the log file on what percentage of ICF folding it now prevents.
