[Bug rtl-optimization/36712] Inefficient loop unrolling

[bmei at broadcom dot com]

------- Comment #4 from bmei at broadcom dot com  2009-05-20 14:17 -------
I implemented a tree-level loop-unrolling pass in our private porting, which 
takes advantage of later tree ivopt pass. It produces much better code than 
rtl-level loop unrolling in such scenarios. Not sure whether should submit for 
4.5.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36712