[Bug tree-optimization/64909] [4.8/4.9/5 Regression] Missed vectorization with bdver1

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64909

--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Feb 10 11:48:47 2015
New Revision: 220580

URL: https://gcc.gnu.org/viewcvs?rev=220580&root=gcc&view=rev
Log:
2015-02-10  Richard Biener  <rguenther@suse.de>

    PR tree-optimization/64909
    * tree-vect-loop.c (vect_estimate_min_profitable_iters): Properly
    pass a scalar-stmt count estimate to the cost model.
    * tree-vect-data-refs.c (vect_peeling_hash_get_lowest_cost): Likewise.

    * gcc.dg/vect/costmodel/x86_64/costmodel-pr64909.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/vect/costmodel/x86_64/costmodel-pr64909.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-data-refs.c
    trunk/gcc/tree-vect-loop.c