[Bug tree-optimization/42108] [4.4/4.5 Regression] 50% performance regression

[rguenth at gcc dot gnu dot org]

------- Comment #31 from rguenth at gcc dot gnu dot org  2009-12-14 11:49 -------
Created an attachment (id=19288)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19288&action=view)
another hack

Sorts the SCCs after collecting them all.  Breaks most of the PRE/FRE testcases
because it sorts all SCCs, not only those that have no direct dependencies.
Not easy to fix though.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42108