[Bug tree-optimization/58248] [4.9 Regression] wrong code at -O3 on x86_64-linux-gnu

[su at cs dot ucdavis.edu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58248

--- Comment #2 from Zhendong Su <su at cs dot ucdavis.edu> ---
Jakub, perhaps you used the testcase from 58247, not the one below?  

I double checked and still get wrong code on this one.