2011-04-14 Richard Guenther <rguenther@suse.de>
* tree-ssa-dse.c (struct dse_global_data, struct dse_block_local_data):
Remove.
(dse_initialize_block_local_data, dse_leave_block,
record_voperand_set, get_stmt_uid): Likewise.
(dse_possible_dead_store_p): Allow any kind of killing stmt.
(dse_optimize_stmt): Remove voperand set handling code.
Simplify and improve to handle any kind of killing stmt.
(dse_record_phi): Remove.
(dse_enter_block): Simplify.
(tree_ssa_dse): Likewise.
* tree-ssa-alias.c (stmt_kills_ref_p_1): Handle some builtins.
* gcc.dg/tree-ssa/ssa-dse-14.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@172431
138bc75d-0d04-0410-961f-
82ee72b054a4