tree-ssa-loop-ch.c: New file.

	* tree-ssa-loop-ch.c: New file.
	* Makefile.in (tree-ssa-loop-ch.o): Add.
	(tree-into-ssa.o): Add GGC_H dependency.
	* tree-cfg.c (tree_duplicate_bb): Copy virtual arguments.
	* tree-flow.h (rewrite_into_ssa): Declaration changed.
	(rewrite_ssa_into_ssa, compute_global_livein, duplicate_ssa_name):
	Declare.
	* tree-into-ssa.c: Include ggc.h.
	(struct def_blocks_d): Add phi_blocks field.
	(struct mark_def_sites_global_data): Add names_to_rename field.
	(struct ssa_name_info): New.
	(compute_global_livein): Export.
	(set_def_block, insert_phi_nodes, mark_def_sites, set_livein_block,
	insert_phi_nodes_1, rewrite_finalize_block, insert_phi_nodes_for,
	register_new_def, get_reaching_def, def_blocks_free,
	get_def_blocks_for, rewrite_into_ssa): Modified to work with
	rewrite_ssa_into_ssa.
	(get_ssa_name_ann, get_phi_state, set_phi_state, get_current_def,
	set_current_def, ssa_mark_def_sites_initialize_block,
	ssa_mark_phi_uses, ssa_mark_def_sites, duplicate_ssa_name,
	ssa_register_new_def, ssa_rewrite_initialize_block,
	ssa_rewrite_phi_arguments, ssa_rewrite_finalize_block,
	ssa_rewrite_stmt, rewrite_ssa_into_ssa, rewrite_all_into_ssa): New
	functions.
	(pass_build_ssa): Call rewrite_all_into_ssa.
	* tree-optimize.c (execute_todo, execute_one_pass,
	tree_rest_of_compilation): Allocate vars_to_rename only once.
	* tree-ssa-dom.c (tree_ssa_dominator_optimize): Provide parameter
	to rewrite_into_ssa.
	* tree-ssa-loop.c (should_duplicate_loop_header_p,
	mark_defs_for_rewrite, duplicate_blocks, do_while_loop_p,
	copy_loop_headers, gate_ch, pass_ch): Moved to tree-ssa-loop-ch.c.
	Use rewrite_ssa_into_ssa.
	* tree-ssa-operands.c (copy_virtual_operands): New function.
	* tree-ssa-operands.h (copy_virtual_operands): Declare.
	* tree.h (struct tree_ssa_name): Add aux field.
	(SSA_NAME_AUX): New macro to access it.

From-SVN: r83932

1 files changed, 39 insertions, 0 deletions

diff --git a/gcc/tree-ssa-operands.c b/gcc/tree-ssa-operands.c
index 3129b9a..c44189f 100644
--- a/gcc/tree-ssa-operands.c
+++ b/gcc/tree-ssa-operands.c
@@ -1446,4 +1446,43 @@ add_call_read_ops (tree stmt, voperands_t prev_vops)
     }
 }
 
+/* Copies virtual operands from SRC to DST.  */
+
+void
+copy_virtual_operands (tree dst, tree src)
+{
+  vuse_optype vuses = STMT_VUSE_OPS (src);
+  v_may_def_optype v_may_defs = STMT_V_MAY_DEF_OPS (src);
+  v_must_def_optype v_must_defs = STMT_V_MUST_DEF_OPS (src);
+  vuse_optype *vuses_new = &stmt_ann (dst)->vuse_ops;
+  v_may_def_optype *v_may_defs_new = &stmt_ann (dst)->v_may_def_ops;
+  v_must_def_optype *v_must_defs_new = &stmt_ann (dst)->v_must_def_ops;
+  unsigned i;
+
+  if (vuses)
+    {
+      *vuses_new = allocate_vuse_optype (NUM_VUSES (vuses));
+      for (i = 0; i < NUM_VUSES (vuses); i++)
+	SET_VUSE_OP (*vuses_new, i, VUSE_OP (vuses, i));
+    }
+
+  if (v_may_defs)
+    {
+      *v_may_defs_new = allocate_v_may_def_optype (NUM_V_MAY_DEFS (v_may_defs));
+      for (i = 0; i < NUM_V_MAY_DEFS (v_may_defs); i++)
+	{
+	  SET_V_MAY_DEF_OP (*v_may_defs_new, i, V_MAY_DEF_OP (v_may_defs, i));
+	  SET_V_MAY_DEF_RESULT (*v_may_defs_new, i, 
+				V_MAY_DEF_RESULT (v_may_defs, i));
+	}
+    }
+
+  if (v_must_defs)
+    {
+      *v_must_defs_new = allocate_v_must_def_optype (NUM_V_MUST_DEFS (v_must_defs));
+      for (i = 0; i < NUM_V_MUST_DEFS (v_must_defs); i++)
+	SET_V_MUST_DEF_OP (*v_must_defs_new, i, V_MUST_DEF_OP (v_must_defs, i));
+    }
+}
+
 #include "gt-tree-ssa-operands.h"