From: Jeff Law <law@gcc.gnu.org>
Date: Mon, 10 Feb 1997 21:50:17 +0000 (-0700)
Subject: stmt.c (group_case_nodes): Recognize more opportunities to group case nodes.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ad7e369fd519d5ccea15bafb57b1e36edc119266;p=gcc.git

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 a8f2abcee9e..a3f42d5a0cc 100644
--- 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,