(bdn/bdz): Fix typo in checking for when we need to split.

From-SVN: r5967

gcc/config/rs6000/rs6000.md

@@ -5410,7 +5410,7 @@
   ""
   "*
 {
-  if (which_alternative == 1)
+  if (which_alternative != 0)
     return \"#\";
   else if (get_attr_length (insn) == 8)
     return \"{bdn|bdnz} %l2\";
@@ -5433,7 +5433,7 @@
   "find_reg_note (insn, REG_NONNEG, 0)"
   "*
 {
-  if (which_alternative == 1)
+  if (which_alternative != 0)
     return \"#\";
   else if (get_attr_length (insn) == 8)
     return \"{bdn|bdnz} %l2\";
@@ -5455,7 +5455,7 @@
   ""
   "*
 {
-  if (which_alternative == 1)
+  if (which_alternative != 0)
     return \"#\";
   else if (get_attr_length (insn) == 8)
     return \"bdz %l2\";