[Bug tree-optimization/50031] Sphinx3 has a 10% regression going from GCC 4.5 to GCC 4.6 on powerpc

["wschmidt at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50031

--- Comment #4 from William J. Schmidt <wschmidt at gcc dot gnu.org> 2012-02-10 16:38:44 UTC ---
Author: wschmidt
Date: Fri Feb 10 16:38:37 2012
New Revision: 184102

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=184102
Log:
2012-02-10  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
        Ira Rosen  <irar@il.ibm.com>

    PR tree-optimization/50031
    * targhooks.c (default_builtin_vectorization_cost): Handle
    vec_promote_demote.
    * target.h (enum vect_cost_for_stmt): Add vec_promote_demote.
    * tree-vect-loop.c (vect_get_single_scalar_iteraion_cost): Handle
    all types of reduction and pattern statements.
    (vect_estimate_min_profitable_iters): Likewise.
    * tree-vect-stmts.c (vect_model_promotion_demotion_cost): New function.
    (vect_get_load_cost): Use vec_perm for permutations; add dump logic
    for explicit realigns.
    (vectorizable_conversion): Call vect_model_promotion_demotion_cost.
    * config/spu/spu.c (spu_builtin_vectorization_cost): Handle
    vec_promote_demote.
    * config/i386/i386.c (ix86_builtin_vectorization_cost): Likewise.
    * config/rs6000/rs6000.c (rs6000_builtin_vectorization_cost): Update
    vec_perm for VSX and handle vec_promote_demote.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/config/rs6000/rs6000.c
    trunk/gcc/config/spu/spu.c
    trunk/gcc/target.h
    trunk/gcc/targhooks.c
    trunk/gcc/tree-vect-loop.c
    trunk/gcc/tree-vect-stmts.c