[Bug tree-optimization/65961] [6 Regression] ice in vect_is_simple_use_1 with -O3

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65961

--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Jun  2 07:50:19 2015
New Revision: 224013

URL: https://gcc.gnu.org/viewcvs?rev=224013&root=gcc&view=rev
Log:
2015-06-02  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/65961
        * tree-vect-slp.c (vect_get_and_check_slp_defs): Remove bogus
        check and clarify dump message.
        (vect_build_slp_tree): If all children are built up from scalars
        build up the parent from scalars instead.
        * tree-vect-stmts.c (vect_is_simple_use): Cleanup.

        * gcc.dg/torture/pr65961.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr65961.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-slp.c
    trunk/gcc/tree-vect-stmts.c