stmt.c (group_case_nodes): Recognize more opportunities to group case nodes.

        * stmt.c (group_case_nodes): Recognize more opportunities to
        group case nodes.

From-SVN: r13624

diff --git a/gcc/stmt.c b/gcc/stmt.c
index a8f2abc..a3f42d5 100644 (file)
--- a/gcc/stmt.c
+++ b/gcc/stmt.c
@@ -5590,12 +5590,18 @@ group_case_nodes (head)
   while (node)
     {
       rtx lb = next_real_insn (label_rtx (node->code_label));
+      rtx lb2;
       case_node_ptr np = node;
 
       /* Try to group the successors of NODE with NODE.  */
       while (((np = np->right) != 0)
             /* Do they jump to the same place?  */
-            && next_real_insn (label_rtx (np->code_label)) == lb
+            && ((lb2 = next_real_insn (label_rtx (np->code_label))) == lb
+                || (lb != 0 && lb2 != 0
+                    && simplejump_p (lb)
+                    && simplejump_p (lb2)
+                    && rtx_equal_p (SET_SRC (PATTERN (lb)),
+                                    SET_SRC (PATTERN (lb2)))))
             /* Are their ranges consecutive?  */
             && tree_int_cst_equal (np->low,
                                    fold (build (PLUS_EXPR,