------- Comment #27 from rakdver at gcc dot gnu dot org 2006-04-03 14:16 ------- With a bit simplified testcase (my computer does not have enough memory for this one), we spend 30% of compile time in rewrite_update_phi_arguments. However, only 1.6% (less then 1% of compile time) of the rewrite_update_phi_arguments calls actually changes anything, so the rest is just traversing a dominance tree and visiting the phi nodes; perhaps this could be optimized somehow.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26830
