[Bug ipa/60243] IPA is slow on large cgraph tree

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60243

--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 32163
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32163&action=edit
patch 2