Fix irix6 -g -O3 -funroll-all-loops bootstrap failure.

	* loop.c (load_mems): Fix JUMP_LABEL field after for_each_rtx call.

From-SVN: r22232

gcc/ChangeLog

+Fri Sep  4 10:37:07 1998  Jim Wilson  <wilson@cygnus.com>
+
+	* loop.c (load_mems): Fix JUMP_LABEL field after for_each_rtx call.
+
 Fri Sep  4 02:01:05 1998  David S. Miller  <davem@pierdol.cobaltmicro.com>
 
 	* config/sparc/sparc.c (output_double_int): In all V9 symbolic

gcc/loop.c

@@ -8826,7 +8826,18 @@ load_mems (scan_start, end, loop_top, start)
       rr.r2 = label;
 
       for (p = start; p != end; p = NEXT_INSN (p))
-	for_each_rtx (&p, replace_label, &rr);
+	{
+	  for_each_rtx (&p, replace_label, &rr);
+
+	  /* If this is a JUMP_INSN, then we also need to fix the JUMP_LABEL
+	     field.  This is not handled by for_each_rtx because it doesn't
+	     handle unprinted ('0') fields.  We need to update JUMP_LABEL
+	     because the immediately following unroll pass will use it.
+	     replace_label would not work anyways, because that only handles
+	     LABEL_REFs.  */
+	  if (GET_CODE (p) == JUMP_INSN && JUMP_LABEL (p) == end_label)
+	    JUMP_LABEL (p) = label;
+	}
     }
 }