+/* Generic hook that takes (enum machine_mode) and returns true. */
+bool
+hook_bool_mode_true (enum machine_mode mode ATTRIBUTE_UNUSED)
+{
+ return true;
+}
+
+/* Generic hook that takes (enum machine_mode, const_rtx) and returns false. */
+bool
+hook_bool_mode_const_rtx_false (enum machine_mode mode ATTRIBUTE_UNUSED,
+ const_rtx value ATTRIBUTE_UNUSED)
+{
+ return false;
+}
+
+/* Generic hook that takes (enum machine_mode, const_rtx) and returns true. */
+bool
+hook_bool_mode_const_rtx_true (enum machine_mode mode ATTRIBUTE_UNUSED,
+ const_rtx value ATTRIBUTE_UNUSED)
+{
+ return true;
+}
+
+/* Generic hook that takes (enum machine_mode, rtx) and returns false. */
+bool
+hook_bool_mode_rtx_false (enum machine_mode mode ATTRIBUTE_UNUSED,
+ rtx value ATTRIBUTE_UNUSED)
+{
+ return false;
+}
+
+/* Generic hook that takes (enum machine_mode, rtx) and returns true. */
+bool
+hook_bool_mode_rtx_true (enum machine_mode mode ATTRIBUTE_UNUSED,
+ rtx value ATTRIBUTE_UNUSED)
+{
+ return true;
+}
+
+/* Generic hook that takes (enum machine_mode, unsigned HOST_WIDE_INT)
+ and returns false. */
+bool
+hook_bool_mode_uhwi_false (enum machine_mode mode ATTRIBUTE_UNUSED,
+ unsigned HOST_WIDE_INT value ATTRIBUTE_UNUSED)
+{
+ return false;
+}
+