df-problems.c (df_rd_confluence_n, [...]): Return true if something changed.

	* df-problems.c (df_rd_confluence_n, df_lr_confluence_n, df_live_confluence_n,
	df_byte_lr_confluence_n, df_md_confluence_n): Return true if something changed.
	* df.h (df_confluence_function_n): Return bool.
	* df-core.c (df_worklist_propagate_forward, df_worklist_propagate_backward):
	track changes and ages.
	(df_worklist_dataflow_doublequeue): Use bitmap iterator for main walk;
	track ages.
	* dse.c (dse_confluence_n): Return always true.

From-SVN: r161197

1 files changed, 2 insertions, 1 deletions

diff --git a/gcc/dse.c b/gcc/dse.c
index 2be8a94..5cb467c 100644
--- a/gcc/dse.c
+++ b/gcc/dse.c
@@ -3396,7 +3396,7 @@ dse_confluence_0 (basic_block bb)
    out set of the src of E.  If the various in or out sets are not
    there, that means they are all ones.  */
 
-static void
+static bool
 dse_confluence_n (edge e)
 {
   bb_info_t src_info = bb_table[e->src->index];
@@ -3412,6 +3412,7 @@ dse_confluence_n (edge e)
 	  bitmap_copy (src_info->out, dest_info->in);
 	}
     }
+  return true;
 }