+}
+
+/* True if the target supports decimal floating point. */
+
+bool
+default_decimal_float_supported_p (void)
+{
+ return ENABLE_DECIMAL_FLOAT;
+}
+
+/* NULL if INSN insn is valid within a low-overhead loop, otherwise returns
+ an error message.
+
+ This function checks whether a given INSN is valid within a low-overhead
+ loop. If INSN is invalid it returns the reason for that, otherwise it
+ returns NULL. A called function may clobber any special registers required
+ for low-overhead looping. Additionally, some targets (eg, PPC) use the count
+ register for branch on table instructions. We reject the doloop pattern in
+ these cases. */
+
+const char *
+default_invalid_within_doloop (rtx insn)
+{
+ if (CALL_P (insn))
+ return "Function call in loop.";
+
+ if (JUMP_P (insn)
+ && (GET_CODE (PATTERN (insn)) == ADDR_DIFF_VEC
+ || GET_CODE (PATTERN (insn)) == ADDR_VEC))
+ return "Computed branch in the loop.";
+
+ return NULL;
+}
+
+/* Mapping of builtin functions to vectorized variants. */
+
+tree
+default_builtin_vectorized_function (enum built_in_function fn ATTRIBUTE_UNUSED,
+ tree type_out ATTRIBUTE_UNUSED,
+ tree type_in ATTRIBUTE_UNUSED)
+{
+ return NULL_TREE;
+}
+
+bool
+hook_bool_CUMULATIVE_ARGS_mode_tree_bool_false (
+ CUMULATIVE_ARGS *ca ATTRIBUTE_UNUSED,
+ enum machine_mode mode ATTRIBUTE_UNUSED,
+ tree type ATTRIBUTE_UNUSED, bool named ATTRIBUTE_UNUSED)
+{
+ return false;
+}
+
+bool
+hook_bool_CUMULATIVE_ARGS_mode_tree_bool_true (
+ CUMULATIVE_ARGS *ca ATTRIBUTE_UNUSED,
+ enum machine_mode mode ATTRIBUTE_UNUSED,
+ tree type ATTRIBUTE_UNUSED, bool named ATTRIBUTE_UNUSED)
+{
+ return true;
+}
+
+int
+hook_int_CUMULATIVE_ARGS_mode_tree_bool_0 (
+ CUMULATIVE_ARGS *ca ATTRIBUTE_UNUSED,
+ enum machine_mode mode ATTRIBUTE_UNUSED,
+ tree type ATTRIBUTE_UNUSED, bool named ATTRIBUTE_UNUSED)
+{
+ return 0;
+}
+
+void
+hook_void_bitmap (bitmap regs ATTRIBUTE_UNUSED)
+{
+}
+
+const char *
+hook_invalid_arg_for_unprototyped_fn (
+ tree typelist ATTRIBUTE_UNUSED,
+ tree funcdecl ATTRIBUTE_UNUSED,
+ tree val ATTRIBUTE_UNUSED)
+{
+ return NULL;
+}
+
+/* Initialize the stack protection decls. */
+
+/* Stack protection related decls living in libgcc. */
+static GTY(()) tree stack_chk_guard_decl;
+
+tree
+default_stack_protect_guard (void)
+{
+ tree t = stack_chk_guard_decl;
+
+ if (t == NULL)