https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106594
--- Comment #17 from Tamar Christina <tnfchris at gcc dot gnu.org> --- (In reply to Segher Boessenkool from comment #13) > Hi! > > Either this should not be P1, or the proposed patch is taking completely the > wrong direction. P1 means there is a regression. There is no regression in > combine, in fact the proposed patch would *cause* regressions on many > targets! > It is a regression in that it causes much worse code on AArch64. I don't particularly care what caused the codegen regression, whether latent or new functionality. I just care that we get much worse code now in GCC 13 and that needs to be fixed.