[Bug tree-optimization/84037] [8 Regression] Speed regression of polyhedron benchmark since r256644

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84037

--- Comment #29 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Feb 12 13:55:04 2018
New Revision: 257588

URL: https://gcc.gnu.org/viewcvs?rev=257588&root=gcc&view=rev
Log:
2018-02-12  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84037
        * tree-vect-slp.c (vect_analyze_slp_cost): Add visited
        parameter, move visited init to caller.
        (vect_slp_analyze_operations): Separate cost from validity
        check, initialize visited once for all instances.
        (vect_schedule_slp): Analyze map to CSE vectorized nodes once
        for all instances.
        * tree-vect-stmts.c (vect_model_simple_cost): Make early
        out an assert.
        (vect_model_promotion_demotion_cost): Likewise.
        (vectorizable_bswap): Guard cost modeling with !slp_node
        instead of !PURE_SLP_STMT to avoid double-counting on hybrid
        SLP stmts.
        (vectorizable_call): Likewise.
        (vectorizable_conversion): Likewise.
        (vectorizable_assignment): Likewise.
        (vectorizable_shift): Likewise.
        (vectorizable_operation): Likewise.
        (vectorizable_store): Likewise.
        (vectorizable_load): Likewise.
        (vectorizable_condition): Likewise.
        (vectorizable_comparison): Likewise.

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