https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91035
--- Comment #8 from Andreas Krebbel <krebbel at gcc dot gnu.org> --- With that patch GCCGO bootstraps fine until r275473 where libgo got updated to version 1.13beta1. Then there are a few problems with hardware crypto support on Z. I'll try to address these with separate patches and BZs. I plan to commit the patch also to GCC 9 and 8 after giving it some time on master.