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* Makefile.in (tree-vn.o): New. (tree-ssa-pre.o): Don't depend on RTL_H. * tree-dfa.c (find_referenced_vars): Don't call init_tree_ssa. * tree-flow.h (struct var_ann_d): Remove field expr_set. (add_to_value, expressions_equal_p, get_value_handle, vn_compute, vn_lookup_or_add, vn_add, vn_lookup, vn_init, vn_delete): Declare. * tree-optimize.c (execute_init_datastructures): New local function. (pass_init_datastructures): New local variable. (init_tree_optimization_passes): Sequence pass_init_datastructures. * tree-pretty-print.c (MASK_POINTER): Remove. (dump_generic_node): Handle VALUE_HANDLE. * tree-ssa-pre.c: Move all value numbering routines to tree-vn.c. Update callers to use new function names. Use VALUE_HANDLE_ID and VALUE_HANDLE_EXPR_SET instead of variable annotations. * tree-ssa.c (init_tree_ssa): Call vn_init. (delete_tree_ssa): Call vn_delete. * tree-vn.c: New file. * tree.c (tree_size): Handle VALUE_HANDLE. (tree_node_structure): Likewise. (iterative_hash_expr): Likewise. * tree.def (VALUE_HANDLE): New code. * tree.h (struct tree_value_handle): New. (VALUE_HANDLE_ID): Define. (VALUE_HANDLE_EXPR_SET): Define. (enum tree_node_structure_enum): Add TS_VALUE_HANDLE. (union tree_node): Add struct tree_value_handle. From-SVN: r83564
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