2009-05-25 Richard Guenther <rguenther@suse.de>
PR tree-optimization/36327
* tree-ssa-alias.c (walk_non_aliased_vuses): Add second walker
callback for reference translation or lookup at the point
of may-defs.
* tree-ssa-alias.h (walk_non_aliased_vuses): Adjust prototype.
* tree-ssa-sccvn.c (get_ref_from_reference_ops): Bail out
for union COMPONENT_REFs.
(vn_reference_lookup_3): New callback. Lookup from memset
and CONSTRUCTOR assignment, translate through struct copies.
(vn_reference_lookup_pieces): Make sure to not free the
passed operands array. Adjust walk_non_aliased_vuses call.
(vn_reference_lookup): Adjust walk_non_aliased_vuses call,
make sure we do not leak memory.
* gcc.dg/tree-ssa/ssa-fre-24.c: New testcase.
* gcc.dg/tree-ssa/ssa-fre-25.c: Likewise.
* gcc.dg/tree-ssa/sra-2.c: Disable FRE.
* gcc.dg/vect/no-vfa-vect-43.c: Adjust.
* gcc.dg/vect/vect-40.c: Likewise.
* gcc.dg/vect/vect-42.c: Likewise.
* gcc.dg/vect/vect-46.c: Likewise.
* gcc.dg/vect/vect-76.c: Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@147851
138bc75d-0d04-0410-961f-
82ee72b054a4