+}
+
+/* Return machine mode for non-standard suffix
+ or VOIDmode if non-standard suffixes are unsupported. */
+enum machine_mode
+default_mode_for_suffix (char suffix ATTRIBUTE_UNUSED)
+{
+ return VOIDmode;
+}
+
+/* The generic C++ ABI specifies this is a 64-bit value. */
+tree
+default_cxx_guard_type (void)
+{
+ return long_long_integer_type_node;
+}
+
+
+/* Returns the size of the cookie to use when allocating an array
+ whose elements have the indicated TYPE. Assumes that it is already
+ known that a cookie is needed. */
+
+tree
+default_cxx_get_cookie_size (tree type)
+{
+ tree cookie_size;
+
+ /* We need to allocate an additional max (sizeof (size_t), alignof
+ (true_type)) bytes. */
+ tree sizetype_size;
+ tree type_align;
+
+ sizetype_size = size_in_bytes (sizetype);
+ type_align = size_int (TYPE_ALIGN_UNIT (type));
+ if (INT_CST_LT_UNSIGNED (type_align, sizetype_size))
+ cookie_size = sizetype_size;
+ else
+ cookie_size = type_align;
+
+ return cookie_size;
+}
+
+/* Return true if a parameter must be passed by reference. This version
+ of the TARGET_PASS_BY_REFERENCE hook uses just MUST_PASS_IN_STACK. */
+
+bool
+hook_pass_by_reference_must_pass_in_stack (CUMULATIVE_ARGS *c ATTRIBUTE_UNUSED,
+ enum machine_mode mode ATTRIBUTE_UNUSED, const_tree type ATTRIBUTE_UNUSED,
+ bool named_arg ATTRIBUTE_UNUSED)
+{
+ return targetm.calls.must_pass_in_stack (mode, type);
+}
+
+/* Return true if a parameter follows callee copies conventions. This
+ version of the hook is true for all named arguments. */
+
+bool
+hook_callee_copies_named (CUMULATIVE_ARGS *ca ATTRIBUTE_UNUSED,
+ enum machine_mode mode ATTRIBUTE_UNUSED,
+ const_tree type ATTRIBUTE_UNUSED, bool named)
+{
+ return named;
+}
+
+/* Emit any directives required to unwind this instruction. */
+
+void
+default_unwind_emit (FILE * stream ATTRIBUTE_UNUSED,
+ rtx insn ATTRIBUTE_UNUSED)
+{
+ /* Should never happen. */
+ gcc_unreachable ();
+}
+
+/* True if MODE is valid for the target. By "valid", we mean able to
+ be manipulated in non-trivial ways. In particular, this means all
+ the arithmetic is supported.
+
+ By default we guess this means that any C type is supported. If
+ we can't map the mode back to a type that would be available in C,
+ then reject it. Special case, here, is the double-word arithmetic
+ supported by optabs.c. */
+
+bool
+default_scalar_mode_supported_p (enum machine_mode mode)
+{
+ int precision = GET_MODE_PRECISION (mode);
+
+ switch (GET_MODE_CLASS (mode))
+ {
+ case MODE_PARTIAL_INT:
+ case MODE_INT:
+ if (precision == CHAR_TYPE_SIZE)
+ return true;
+ if (precision == SHORT_TYPE_SIZE)
+ return true;
+ if (precision == INT_TYPE_SIZE)
+ return true;
+ if (precision == LONG_TYPE_SIZE)
+ return true;
+ if (precision == LONG_LONG_TYPE_SIZE)
+ return true;
+ if (precision == 2 * BITS_PER_WORD)
+ return true;
+ return false;
+
+ case MODE_FLOAT:
+ if (precision == FLOAT_TYPE_SIZE)
+ return true;
+ if (precision == DOUBLE_TYPE_SIZE)
+ return true;
+ if (precision == LONG_DOUBLE_TYPE_SIZE)
+ return true;
+ return false;
+
+ case MODE_DECIMAL_FLOAT:
+ case MODE_FRACT:
+ case MODE_UFRACT:
+ case MODE_ACCUM:
+ case MODE_UACCUM:
+ return false;
+
+ default:
+ gcc_unreachable ();
+ }
+}
+
+/* True if the target supports decimal floating point. */
+
+bool
+default_decimal_float_supported_p (void)
+{
+ return ENABLE_DECIMAL_FLOAT;
+}
+
+/* True if the target supports fixed-point arithmetic. */
+
+bool
+default_fixed_point_supported_p (void)
+{
+ return ENABLE_FIXED_POINT;
+}
+
+/* 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 (const_rtx insn)
+{
+ if (CALL_P (insn))
+ return "Function call in loop.";
+
+ if (JUMP_TABLE_DATA_P (insn))
+ return "Computed branch in the loop.";
+
+ return NULL;
+}
+
+/* Mapping of builtin functions to vectorized variants. */
+
+tree
+default_builtin_vectorized_function (tree fndecl ATTRIBUTE_UNUSED,
+ tree type_out ATTRIBUTE_UNUSED,
+ tree type_in ATTRIBUTE_UNUSED)
+{
+ return NULL_TREE;
+}
+
+/* Vectorized conversion. */
+
+tree
+default_builtin_vectorized_conversion (unsigned int code ATTRIBUTE_UNUSED,
+ tree dest_type ATTRIBUTE_UNUSED,
+ tree src_type ATTRIBUTE_UNUSED)
+{
+ return NULL_TREE;
+}
+
+/* Reciprocal. */
+
+tree
+default_builtin_reciprocal (unsigned int fn ATTRIBUTE_UNUSED,
+ bool md_fn ATTRIBUTE_UNUSED,
+ bool sqrt 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,
+ const_tree type ATTRIBUTE_UNUSED, bool named ATTRIBUTE_UNUSED)
+{
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