[Bug tree-optimization/46787] Does not vectorize loop with load from scalar variable

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46787

--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-06-30 
13:27:47 UTC ---
Author: rguenth
Date: Thu Jun 30 13:27:43 2011
New Revision: 175704

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=175704
Log:
2011-06-30  Richard Guenther  <rguent...@suse.de>

    PR tree-optimization/46787
    * tree-data-ref.c (dr_address_invariant_p): Remove.
    (find_data_references_in_stmt): Invariant accesses are ok now.
    * tree-vect-stmts.c (vectorizable_load): Handle invariant
    loads.
    * tree-vect-data-refs.c (vect_analyze_data_ref_access): Allow
    invariant loads.

    * gcc.dg/vect/vect-121.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/vect/vect-121.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-data-ref.c
    trunk/gcc/tree-vect-data-refs.c
    trunk/gcc/tree-vect-stmts.c