[Bug tree-optimization/81303] [8 Regression] 410.bwaves regression caused by r249919

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81303

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Jul 21 07:13:57 2017
New Revision: 250416

URL: https://gcc.gnu.org/viewcvs?rev=250416&root=gcc&view=rev
Log:
2016-07-21  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/81303
        * tree-vect-loop.c (vect_estimate_min_profitable_iters): Take
        into account prologue and epilogue iterations when raising
        min_profitable_iters to sth at least covering one vector iteration.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-vect-loop.c