[Bug tree-optimization/53419] loop incorrectly optimized to endless loop at -O2 for table delimited by extern addresses (x86-32)

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53419

--- Comment #10 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-05-21 
11:29:13 UTC ---
Btw, it does not change it to an endless loop but the exit test to

 if (n_init > 1)

thus only an endless loop in case there is more than one element.