[Bug target/69264] [5/6/7 regression] ICE building spidermonkey -mcpu=970 -maltivec -O3: rs6000_builtin_vectorization_cost, at config/rs6000/rs6000.c:4350

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69264

--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Jan 25 12:30:41 2017
New Revision: 244897

URL: https://gcc.gnu.org/viewcvs?rev=244897&root=gcc&view=rev
Log:
2017-01-25  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/69264
        * target.def (vector_alignment_reachable): Improve documentation.
        * doc/tm.texi: Regenerate.
        * targhooks.c (default_builtin_vector_alignment_reachable): Simplify
        and add a comment.
        * tree-vect-data-refs.c (vect_supportable_dr_alignment): Revert
        earlier changes with respect to TYPE_USER_ALIGN.
        (vector_alignment_reachable_p): Likewise.  Improve dumping.

        * g++.dg/torture/pr69264.C: New testcase.

Added:
    trunk/gcc/testsuite/g++.dg/torture/pr69264.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/doc/tm.texi
    trunk/gcc/target.def
    trunk/gcc/targhooks.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-data-refs.c