[Bug tree-optimization/55286] [4.7/4.8 Regression] Bytemark ASSIGNMENT 4% - 10% slower

[wbrana at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55286

--- Comment #13 from wbrana <wbrana at gmail dot com> 2012-11-30 20:23:40 UTC ---
It seems it is caused by 182844

182839 
ASSIGNMENT          :          64.374  :     244.96  :      63.54
182844
ASSIGNMENT          :          57.697  :     219.55  :      56.95

Author: irar <irar@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Tue Jan 3 13:24:04 2012 +0000

            PR tree-optimization/51269
            * tree-vect-loop-manip.c (set_prologue_iterations): Make
            first_niters a pointer.
            (slpeel_tree_peel_loop_to_edge): Likewise.
            (vect_do_peeling_for_loop_bound): Update call to
            slpeel_tree_peel_loop_to_edge.
            (vect_gen_niters_for_prolog_loop): Don't compute
            wide_prolog_niters here.  Remove it from the parameters list.
            (vect_do_peeling_for_alignment): Update calls and compute
            wide_prolog_niters.