http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47057
Ira Rosen <irar at il dot ibm.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |ASSIGNED Last reconfirmed| |2010.12.25 11:49:58 CC| |irar at il dot ibm.com AssignedTo|unassigned at gcc dot |irar at gcc dot gnu.org |gnu.org | Ever Confirmed|0 |1 --- Comment #1 from Ira Rosen <irar at il dot ibm.com> 2010-12-25 11:49:58 UTC --- The first loop now gets vectorized, it didn't because of: /* Currently not vectorized because we get too many BBs in the inner-loop, because the compiler doesn't realize that the inner-loop executes at least once (cause k<4), and so there's no need to create a guard code to skip the inner-loop in case it doesn't execute. */ So, the correct fix is to expect 2 outer loop vectorized on targets that support realignment. I'll fix the test. Ira