[Bug tree-optimization/43537] c++ -O2 optimizes away a branch inside a loop (-ftree-vrp maybe)

[hjl dot tools at gmail dot com]

------- Comment #3 from hjl dot tools at gmail dot com  2010-03-26 13:50 -------
It will be easier to debug if you provide a run-time testcase.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43537