[Bug tree-optimization/70923] [7 regression] gcc.dg/vect/pr60092.c etc. FAIL

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70923

--- Comment #10 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Thu Jul 14 14:32:39 2016
New Revision: 238340

URL: https://gcc.gnu.org/viewcvs?rev=238340&root=gcc&view=rev
Log:
[vectorizer][2/2] Hook up mult synthesis logic into vectorisation of
mult-by-constant

        PR target/65951
        PR tree-optimization/70923
        * tree-vect-patterns.c: Include mult-synthesis.h.
        (target_supports_mult_synth_alg): New function.
        (synth_lshift_by_additions): Likewise.
        (apply_binop_and_append_stmt): Likewise.
        (vect_synth_mult_by_constant): Likewise.
        (target_has_vecop_for_code): Likewise.
        (vect_recog_mult_pattern): Use above functions to synthesize vector
        multiplication by integer constants.

        * gcc.dg/vect/vect-mult-const-pattern-1.c: New test.
        * gcc.dg/vect/vect-mult-const-pattern-2.c: Likewise.
        * gcc.dg/vect/pr65951.c: Likewise.
        * gcc.dg/vect/vect-iv-9.c: Remove ! vect_int_mult-specific scan.


Added:
    trunk/gcc/testsuite/gcc.dg/vect/pr65951.c
    trunk/gcc/testsuite/gcc.dg/vect/vect-mult-const-pattern-1.c
    trunk/gcc/testsuite/gcc.dg/vect/vect-mult-const-pattern-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/vect/vect-iv-9.c
    trunk/gcc/tree-vect-patterns.c