------- Comment #28 from bonzini at gnu dot org 2007-08-29 14:14 ------- > Apparently dce is the only user of df_simulate_* which at the start of the > basic block compares the resulting bitmap with DF_LR_IN.
Yes. The other two don't get infinite loops from their doing the wrong thing; they just think some register is live and may miss some optimization. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32758