[Bug middle-end/30442] Expanded array initialization can use memset builtin function

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30442

--- Comment #8 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-06-05 
12:38:30 UTC ---
Author: rguenth
Date: Tue Jun  5 12:38:26 2012
New Revision: 188235

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=188235
Log:
2012-06-05  Richard Guenther  <rguent...@suse.de>

    PR tree-optimization/30442
    * tree-vect-data-refs.c (vect_analyze_data_refs): For basic-block
    vectorization stop analysis at the first stmt we cannot compute
    a data-reference for instead of giving up completely.

    * gcc.dg/vect/bb-slp-30.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/vect/bb-slp-30.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-data-refs.c