* 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.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@83564 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 28 insertions, 0 deletions

diff --git a/gcc/tree-optimize.c b/gcc/tree-optimize.c
index 30e1e7c25ef..a9217b187c4 100644
--- a/gcc/tree-optimize.c
+++ b/gcc/tree-optimize.c
@@ -153,6 +153,33 @@ static struct tree_opt_pass pass_free_datastructures =
   0					/* todo_flags_finish */
 };
 
+
+/* Do the actions required to initialize internal data structures used
+   in tree-ssa optimization passes.  */
+
+static void
+execute_init_datastructures (void)
+{
+  /* Allocate hash tables, arrays and other structures.  */
+  init_tree_ssa ();
+}
+
+static struct tree_opt_pass pass_init_datastructures =
+{
+  NULL,					/* name */
+  NULL,					/* gate */
+  execute_init_datastructures,		/* execute */
+  NULL,					/* sub */
+  NULL,					/* next */
+  0,					/* static_pass_number */
+  0,					/* tv_id */
+  PROP_cfg,				/* properties_required */
+  0,					/* properties_provided */
+  0,					/* properties_destroyed */
+  0,					/* todo_flags_start */
+  0					/* todo_flags_finish */
+};
+
 /* Iterate over the pass tree allocating dump file numbers.  We want
    to do this depth first, and independent of whether the pass is
    enabled or not.  */
@@ -253,6 +280,7 @@ init_tree_optimization_passes (void)
   NEXT_PASS (pass_lower_eh);
   NEXT_PASS (pass_build_cfg);
   NEXT_PASS (pass_tree_profile);
+  NEXT_PASS (pass_init_datastructures);
   NEXT_PASS (pass_all_optimizations);
   NEXT_PASS (pass_mudflap_2);
   NEXT_PASS (pass_free_datastructures);