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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. From-SVN: r172431
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