[Bug middle-end/37150] basic-block vectorization misses some unrolled loops

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=37150

--- Comment #23 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Nov  7 08:06:08 2016
New Revision: 241893

URL: https://gcc.gnu.org/viewcvs?rev=241893&root=gcc&view=rev
Log:
2016-11-07  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/37150
        * tree-vectorizer.h (vect_transform_slp_perm_load): Add n_perms
        parameter.
        * tree-vect-slp.c (vect_supported_load_permutation_p): Adjust.
        (vect_analyze_slp_cost_1): Account for the real number of
        permutations emitted and for dead loads.
        (vect_transform_slp_perm_load): Add n_perms parameter counting
        the number of emitted permutations.
        * tree-vect-stmts.c (vectorizable_load): Adjust.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-vect-slp.c
    trunk/gcc/tree-vect-stmts.c
    trunk/gcc/tree-vectorizer.h