[Bug target/70799] STV pass does not convert DImode shifts

[uros at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70799

--- Comment #7 from uros at gcc dot gnu.org ---
Author: uros
Date: Sun Dec 11 18:59:07 2016
New Revision: 243530

URL: https://gcc.gnu.org/viewcvs?rev=243530&root=gcc&view=rev
Log:
        PR target/70799
        * config/i386/i386.c (dimode_scalar_to_vector_candidate_p)
        <case ASHIFT, case LSHIFTRT>: Consider all constant shifts.
        Add FIXME comment.
        (dimode_scalar_chain::compute_convert_gain): Reduce gain for
        constant shifts larger or equal than 32.

testsuite/ChangeLog:

        PR target/70799
        * gcc.target/i386/pr70799-3.c: New test.


Added:
    trunk/gcc/testsuite/gcc.target/i386/pr70799-3.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/testsuite/ChangeLog