------- Comment #78 from bonzini at gnu dot org 2010-08-24 13:44 ------- My plan for fwprop is to replace the whole update_df machinery with a call to df_uses_record. The use-def links can be kept up to date by looking at the original uses of both the propagated-from and propagated-into instructions.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44970
