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[Bug translation/80958] [8 regression] gcc.target/i386/pr70021.c FAILs


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80958

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |missed-optimization
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2017-06-02
                 CC|                            |jgreenhalgh at gcc dot gnu.org,
                   |                            |rguenth at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
The first loop is no longer vectorized because of cost issues.  Likely because
of

2017-05-16  James Greenhalgh  <james.greenhalgh@arm.com>
            Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

        PR tree-optimization/80457
        * tree-vect-stmts.c (vect_model_simple_cost): Model the cost
        of all arguments to a statement as scalar_to_vec operations.
        (vectorizable_call): Adjust call to vect_model_simple_cost for
        new parameter.
        (vectorizable_conversion): Likewise.
        (vectorizable_assignment): Likewise.
        (vectorizable_shift): Likewise.
        (vectorizable_operation): Likewise.
        (vectorizable_comparison): Likewise.
        (vect_is_simple_cond): Record the def types for operands.
        (vectorizable_condition): Likewise, call vect_model_simple_cost.
        * tree-vectorizer.h (vect_model_simple_cost): Add new parameter
        for statement argument count.

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