sh Joern Rennecke v850 Nick Clifton, Michael Meissner arm Nick Clifton, Richard Earnshaw m32r Nick Clifton h8, Jeff Law mn10200, mn10300 Jeff Law hppa Jeff Law m68k Jeff Law (?) rs6000 Michael Meissner, David Edelsohn mips Jim Wilson, Gavin Koch i960, a29k Jim Wilson alpha Richard Henderson sparc Richard Henderson, David Miller x86 Stan Cox fortran Craig Burley, David Love, Richard Henderson Toon Moene c++ Jason Merrill alias analysis John Carr loop unrolling Jim Wilson scheduler (including haifa) Jeff Law, Jim Wilson, Michael Meissner delay slot filling Jeff Law dwarf debugging Jim Wilson (Jason Merrill also knows the dwarf debugging code well). libio/libstdc++ Ulrich Drepper