https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117922
--- Comment #22 from Paolo Bonzini <bonzini at gnu dot org> --- Yes, I suggested the MD problem because it did solve gambit performance issues with fwprop for good, but RTL-SSA is certainly applicable. Also, once all RD uses are converted to RTL-SSA it should really be removed from df.c as a bad idea (and probably also MD since it's unused *sheds a tear*).
