https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61577
--- Comment #225 from John Buddery <jvb at cyberscience dot com> --- Yes, I looked briefly at that - I added a new class, but then started hitting bundling errors because it wasn't being positioned correctly in the 3 instruction bundle. It will need more changes to itanium2.md, which looks at the actual itanium_class rather than just the derived type as I was expecting, and fixes the bundling for long_i only (rather than type L). For now I've reverted to scall to test the other changes - this seems to work, probably because the assembler is fixing up any bundling issues This isn't really right though, as you say it needs combined long_i and scall behaviour for a new type.
