------- Comment #81 from bonzini at gnu dot org 2009-05-08 07:55 ------- Created an attachment (id=17825) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=17825&action=view) speed up fwprop and enable it at -O1
Here is a patch I'm bootstrapping to remove fwprop's usage of UD chains. It does not affect at all the assembly output, it just changes the data structure that is used. compiler.i is probably too big for me, but I tried slatex.i and fwprop was ~2% of compilation time with this patch. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33928
