https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107827
--- Comment #4 from Alexander Kleinsorge <aleks at physik dot tu-berlin.de> --- (In reply to Andrew Pinski from comment #2) > x86_64 target does not dojump table compression at all. > But aarch64 and arm targets do: > .L4: > .2byte (.L103 - .Lrtx4) / 4 > .2byte (.L102 - .Lrtx4) / 4 > .2byte (.L101 - .Lrtx4) / 4 > .2byte (.L100 - .Lrtx4) / 4 > .2byte (.L99 - .Lrtx4) / 4 > .2byte (.L98 - .Lrtx4) / 4 > .2byte (.L97 - .Lrtx4) / 4 > .2byte (.L96 - .Lrtx4) / 4 > .2byte (.L95 - .Lrtx4) / 4 > > > Confirmed. Note the /4 can't be done for x86 but the rest I think can be > done. The /4 can't be done because some instructions one byte in length on > x86_64. I think by inserting 1 byte NOPs should be possible to get jump-point-alignment https://www.felixcloutier.com/x86/nop So the other 1 byte ops could be filled up for alignment.
