https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113357
--- Comment #9 from Mikael Pettersson <mikpelinux at gmail dot com> --- (In reply to Manolis Tsamis from comment #8) > Created attachment 58335 [details] > Do not modify live_out registers > > After looking again at the dumps from PR112415, which I believe is closely > related to the issue here, I saw that while f-m-o was checking the uses of > the folded registers, it was still modifying registers that were at the BB's > live_out set. > > I have attached a patch that I'm testing for addressing this. Could you > please check if this fixes this issue? I'm starting a bootstrap on m68k-linux-gnu with this now, should know by Friday if it resolves the issue or not. (It's running in full-system emulation mode on Aranym, so it's slow.)
