2008-09-22 Richard Guenther <rguenther@suse.de>
PR tree-optimization/37145
* tree-ssa-sccvn.c (copy_reference_ops_from_ref): Re-enable
value-numbering union accesses with their offset and size only.
(visit_reference_op_load): Fix simplification of inserted conversions.
* tree-ssa-pre.c (find_or_generate_expression): Do not
recursively generate expressions if running FRE.
* gcc.c-torture/compile/
20080922-1.c: New testcase.
* gcc.dg/tree-ssa/ssa-fre-7.c: Remove XFAIL.
* gcc.dg/tree-ssa/ssa-fre-8.c: Likewise.
* gcc.dg/tree-ssa/ssa-fre-9.c: Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@140562
138bc75d-0d04-0410-961f-
82ee72b054a4