[Bug tree-optimization/51269] Vectorization profitability threshold is not actually used

[irar at il dot ibm.com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51269

--- Comment #1 from Ira Rosen <irar at il dot ibm.com> 2011-11-23 10:46:00 UTC ---
Created attachment 25895
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25895
patch


Right, this looks like a bug. The attached (not really tested) patch tries to
propagate prologue_after_cost_adjust.

Unfortunately, the patch will not help with your problem. This param has no
effect on peeling. I think you need a param min-niters-for-peeling to control
the minimum of scalar loop iterations to apply peeling for alignment (in case
that all the unaligned accesses are supported).
Could you please open a new PR for this?