[Bug tree-optimization/59058] [4.7/4.8/4.9 Regression] wrong code at -O3 on x86_64-linux-gnu (affecting gcc 4.6 to trunk)

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59058

--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Still FAILs to vectorize gcc.dg/vect/pr18425.c with -m32.  But we have here

=> get_loop_niters:(unsigned long) (__n_7(D) + 4294967295) + 1

that could have been simplified.  __n is unsigned int.  So I can special
case that (but really only that ... still common enough).