* 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, 0 insertions, 4 deletions

diff --git a/gcc/tree-dfa.c b/gcc/tree-dfa.c
index 307086bedb7..bc1f8f5dd44 100644
--- a/gcc/tree-dfa.c
+++ b/gcc/tree-dfa.c
@@ -111,10 +111,6 @@ find_referenced_vars (void)
   struct walk_state walk_state;
   tree block;
 
-  /* This is the very first pass in preparation for building the SSA
-     form of the function, so initialize internal data structures now.  */
-  init_tree_ssa ();
-
   /* Walk the lexical blocks in the function looking for variables that may
      have been used to declare VLAs and for nested functions.  Both
      constructs create hidden uses of variables.