http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49006
Ira Rosen <irar at il dot ibm.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |irar at il dot ibm.com --- Comment #4 from Ira Rosen <irar at il dot ibm.com> 2011-05-19 12:33:49 UTC --- (In reply to comment #0) The problem is you don't see: > induct_v4.f90:1766: note: LOOP VECTORIZED. > induct_v4.f90:2177: note: LOOP VECTORIZED. anymore, right? With -Ofast there are no such loops, 1766 and 2177, they are probably being unrolled. I see these loops with -O2 -ftree-vectorize, and they are indeed not vectorized, but they are not vectorized by previous version as well, AFAIU. Ira