diff options
Diffstat (limited to 'gcc/c-family/c-common.c')
| -rw-r--r-- | gcc/c-family/c-common.c | 3114 |
1 files changed, 1 insertions, 3113 deletions
diff --git a/gcc/c-family/c-common.c b/gcc/c-family/c-common.c index c4a0ce8..326ff6f 100644 --- a/gcc/c-family/c-common.c +++ b/gcc/c-family/c-common.c @@ -306,102 +306,9 @@ static tree check_case_value (location_t, tree); static bool check_case_bounds (location_t, tree, tree, tree *, tree *, bool *); -static tree handle_packed_attribute (tree *, tree, tree, int, bool *); -static tree handle_nocommon_attribute (tree *, tree, tree, int, bool *); -static tree handle_common_attribute (tree *, tree, tree, int, bool *); -static tree handle_noreturn_attribute (tree *, tree, tree, int, bool *); -static tree handle_hot_attribute (tree *, tree, tree, int, bool *); -static tree handle_cold_attribute (tree *, tree, tree, int, bool *); -static tree handle_no_sanitize_address_attribute (tree *, tree, tree, - int, bool *); -static tree handle_no_address_safety_analysis_attribute (tree *, tree, tree, - int, bool *); -static tree handle_no_sanitize_undefined_attribute (tree *, tree, tree, int, - bool *); -static tree handle_stack_protect_attribute (tree *, tree, tree, int, bool *); -static tree handle_noinline_attribute (tree *, tree, tree, int, bool *); -static tree handle_noclone_attribute (tree *, tree, tree, int, bool *); -static tree handle_noicf_attribute (tree *, tree, tree, int, bool *); -static tree handle_leaf_attribute (tree *, tree, tree, int, bool *); -static tree handle_always_inline_attribute (tree *, tree, tree, int, - bool *); -static tree handle_gnu_inline_attribute (tree *, tree, tree, int, bool *); -static tree handle_artificial_attribute (tree *, tree, tree, int, bool *); -static tree handle_flatten_attribute (tree *, tree, tree, int, bool *); -static tree handle_error_attribute (tree *, tree, tree, int, bool *); -static tree handle_used_attribute (tree *, tree, tree, int, bool *); -static tree handle_externally_visible_attribute (tree *, tree, tree, int, - bool *); -static tree handle_no_reorder_attribute (tree *, tree, tree, int, - bool *); -static tree handle_const_attribute (tree *, tree, tree, int, bool *); -static tree handle_transparent_union_attribute (tree *, tree, tree, - int, bool *); -static tree handle_scalar_storage_order_attribute (tree *, tree, tree, - int, bool *); -static tree handle_constructor_attribute (tree *, tree, tree, int, bool *); -static tree handle_destructor_attribute (tree *, tree, tree, int, bool *); -static tree handle_mode_attribute (tree *, tree, tree, int, bool *); -static tree handle_section_attribute (tree *, tree, tree, int, bool *); -static tree handle_aligned_attribute (tree *, tree, tree, int, bool *); -static tree handle_weak_attribute (tree *, tree, tree, int, bool *) ; -static tree handle_noplt_attribute (tree *, tree, tree, int, bool *) ; -static tree handle_alias_ifunc_attribute (bool, tree *, tree, tree, bool *); -static tree handle_ifunc_attribute (tree *, tree, tree, int, bool *); -static tree handle_alias_attribute (tree *, tree, tree, int, bool *); -static tree handle_weakref_attribute (tree *, tree, tree, int, bool *) ; -static tree handle_visibility_attribute (tree *, tree, tree, int, - bool *); -static tree handle_tls_model_attribute (tree *, tree, tree, int, - bool *); -static tree handle_no_instrument_function_attribute (tree *, tree, - tree, int, bool *); -static tree handle_no_profile_instrument_function_attribute (tree *, tree, - tree, int, bool *); -static tree handle_malloc_attribute (tree *, tree, tree, int, bool *); -static tree handle_returns_twice_attribute (tree *, tree, tree, int, bool *); -static tree handle_no_limit_stack_attribute (tree *, tree, tree, int, - bool *); -static tree handle_pure_attribute (tree *, tree, tree, int, bool *); -static tree handle_tm_attribute (tree *, tree, tree, int, bool *); -static tree handle_tm_wrap_attribute (tree *, tree, tree, int, bool *); -static tree handle_novops_attribute (tree *, tree, tree, int, bool *); -static tree handle_deprecated_attribute (tree *, tree, tree, int, - bool *); -static tree handle_vector_size_attribute (tree *, tree, tree, int, - bool *); -static tree handle_nonnull_attribute (tree *, tree, tree, int, bool *); -static tree handle_nothrow_attribute (tree *, tree, tree, int, bool *); -static tree handle_cleanup_attribute (tree *, tree, tree, int, bool *); -static tree handle_warn_unused_result_attribute (tree *, tree, tree, int, - bool *); -static tree handle_sentinel_attribute (tree *, tree, tree, int, bool *); -static tree handle_type_generic_attribute (tree *, tree, tree, int, bool *); -static tree handle_alloc_size_attribute (tree *, tree, tree, int, bool *); -static tree handle_alloc_align_attribute (tree *, tree, tree, int, bool *); -static tree handle_assume_aligned_attribute (tree *, tree, tree, int, bool *); -static tree handle_target_attribute (tree *, tree, tree, int, bool *); -static tree handle_target_clones_attribute (tree *, tree, tree, int, bool *); -static tree handle_optimize_attribute (tree *, tree, tree, int, bool *); -static tree ignore_attribute (tree *, tree, tree, int, bool *); -static tree handle_no_split_stack_attribute (tree *, tree, tree, int, bool *); -static tree handle_fnspec_attribute (tree *, tree, tree, int, bool *); -static tree handle_warn_unused_attribute (tree *, tree, tree, int, bool *); -static tree handle_returns_nonnull_attribute (tree *, tree, tree, int, bool *); -static tree handle_omp_declare_simd_attribute (tree *, tree, tree, int, - bool *); -static tree handle_simd_attribute (tree *, tree, tree, int, bool *); -static tree handle_omp_declare_target_attribute (tree *, tree, tree, int, - bool *); -static tree handle_designated_init_attribute (tree *, tree, tree, int, bool *); -static tree handle_bnd_variable_size_attribute (tree *, tree, tree, int, bool *); -static tree handle_bnd_legacy (tree *, tree, tree, int, bool *); -static tree handle_bnd_instrument (tree *, tree, tree, int, bool *); -static tree handle_fallthrough_attribute (tree *, tree, tree, int, bool *); static void check_nonnull_arg (void *, tree, unsigned HOST_WIDE_INT); static bool nonnull_check_p (tree, unsigned HOST_WIDE_INT); -static bool get_nonnull_operand (tree, unsigned HOST_WIDE_INT *); static int resort_field_decl_cmp (const void *, const void *); /* Reserved words. The third field is a mask: keywords are disabled @@ -652,229 +559,6 @@ const struct c_common_resword c_common_reswords[] = const unsigned int num_c_common_reswords = sizeof c_common_reswords / sizeof (struct c_common_resword); -/* Table of machine-independent attributes common to all C-like languages. - - All attributes referencing arguments should be additionally processed - in chkp_copy_function_type_adding_bounds for correct instrumentation - by Pointer Bounds Checker. - Current list of processed common attributes: nonnull. */ -const struct attribute_spec c_common_attribute_table[] = -{ - /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler, - affects_type_identity } */ - { "packed", 0, 0, false, false, false, - handle_packed_attribute , false}, - { "nocommon", 0, 0, true, false, false, - handle_nocommon_attribute, false}, - { "common", 0, 0, true, false, false, - handle_common_attribute, false }, - /* FIXME: logically, noreturn attributes should be listed as - "false, true, true" and apply to function types. But implementing this - would require all the places in the compiler that use TREE_THIS_VOLATILE - on a decl to identify non-returning functions to be located and fixed - to check the function type instead. */ - { "noreturn", 0, 0, true, false, false, - handle_noreturn_attribute, false }, - { "volatile", 0, 0, true, false, false, - handle_noreturn_attribute, false }, - { "stack_protect", 0, 0, true, false, false, - handle_stack_protect_attribute, false }, - { "noinline", 0, 0, true, false, false, - handle_noinline_attribute, false }, - { "noclone", 0, 0, true, false, false, - handle_noclone_attribute, false }, - { "no_icf", 0, 0, true, false, false, - handle_noicf_attribute, false }, - { "leaf", 0, 0, true, false, false, - handle_leaf_attribute, false }, - { "always_inline", 0, 0, true, false, false, - handle_always_inline_attribute, false }, - { "gnu_inline", 0, 0, true, false, false, - handle_gnu_inline_attribute, false }, - { "artificial", 0, 0, true, false, false, - handle_artificial_attribute, false }, - { "flatten", 0, 0, true, false, false, - handle_flatten_attribute, false }, - { "used", 0, 0, true, false, false, - handle_used_attribute, false }, - { "unused", 0, 0, false, false, false, - handle_unused_attribute, false }, - { "externally_visible", 0, 0, true, false, false, - handle_externally_visible_attribute, false }, - { "no_reorder", 0, 0, true, false, false, - handle_no_reorder_attribute, false }, - /* The same comments as for noreturn attributes apply to const ones. */ - { "const", 0, 0, true, false, false, - handle_const_attribute, false }, - { "scalar_storage_order", 1, 1, false, false, false, - handle_scalar_storage_order_attribute, false }, - { "transparent_union", 0, 0, false, false, false, - handle_transparent_union_attribute, false }, - { "constructor", 0, 1, true, false, false, - handle_constructor_attribute, false }, - { "destructor", 0, 1, true, false, false, - handle_destructor_attribute, false }, - { "mode", 1, 1, false, true, false, - handle_mode_attribute, false }, - { "section", 1, 1, true, false, false, - handle_section_attribute, false }, - { "aligned", 0, 1, false, false, false, - handle_aligned_attribute, false }, - { "weak", 0, 0, true, false, false, - handle_weak_attribute, false }, - { "noplt", 0, 0, true, false, false, - handle_noplt_attribute, false }, - { "ifunc", 1, 1, true, false, false, - handle_ifunc_attribute, false }, - { "alias", 1, 1, true, false, false, - handle_alias_attribute, false }, - { "weakref", 0, 1, true, false, false, - handle_weakref_attribute, false }, - { "no_instrument_function", 0, 0, true, false, false, - handle_no_instrument_function_attribute, - false }, - { "no_profile_instrument_function", 0, 0, true, false, false, - handle_no_profile_instrument_function_attribute, - false }, - { "malloc", 0, 0, true, false, false, - handle_malloc_attribute, false }, - { "returns_twice", 0, 0, true, false, false, - handle_returns_twice_attribute, false }, - { "no_stack_limit", 0, 0, true, false, false, - handle_no_limit_stack_attribute, false }, - { "pure", 0, 0, true, false, false, - handle_pure_attribute, false }, - { "transaction_callable", 0, 0, false, true, false, - handle_tm_attribute, false }, - { "transaction_unsafe", 0, 0, false, true, false, - handle_tm_attribute, true }, - { "transaction_safe", 0, 0, false, true, false, - handle_tm_attribute, true }, - { "transaction_safe_dynamic", 0, 0, true, false, false, - handle_tm_attribute, false }, - { "transaction_may_cancel_outer", 0, 0, false, true, false, - handle_tm_attribute, false }, - /* ??? These two attributes didn't make the transition from the - Intel language document to the multi-vendor language document. */ - { "transaction_pure", 0, 0, false, true, false, - handle_tm_attribute, false }, - { "transaction_wrap", 1, 1, true, false, false, - handle_tm_wrap_attribute, false }, - /* For internal use (marking of builtins) only. The name contains space - to prevent its usage in source code. */ - { "no vops", 0, 0, true, false, false, - handle_novops_attribute, false }, - { "deprecated", 0, 1, false, false, false, - handle_deprecated_attribute, false }, - { "vector_size", 1, 1, false, true, false, - handle_vector_size_attribute, true }, - { "visibility", 1, 1, false, false, false, - handle_visibility_attribute, false }, - { "tls_model", 1, 1, true, false, false, - handle_tls_model_attribute, false }, - { "nonnull", 0, -1, false, true, true, - handle_nonnull_attribute, false }, - { "nothrow", 0, 0, true, false, false, - handle_nothrow_attribute, false }, - { "may_alias", 0, 0, false, true, false, NULL, false }, - { "cleanup", 1, 1, true, false, false, - handle_cleanup_attribute, false }, - { "warn_unused_result", 0, 0, false, true, true, - handle_warn_unused_result_attribute, false }, - { "sentinel", 0, 1, false, true, true, - handle_sentinel_attribute, false }, - /* For internal use (marking of builtins) only. The name contains space - to prevent its usage in source code. */ - { "type generic", 0, 0, false, true, true, - handle_type_generic_attribute, false }, - { "alloc_size", 1, 2, false, true, true, - handle_alloc_size_attribute, false }, - { "cold", 0, 0, true, false, false, - handle_cold_attribute, false }, - { "hot", 0, 0, true, false, false, - handle_hot_attribute, false }, - { "no_address_safety_analysis", - 0, 0, true, false, false, - handle_no_address_safety_analysis_attribute, - false }, - { "no_sanitize_address", 0, 0, true, false, false, - handle_no_sanitize_address_attribute, - false }, - { "no_sanitize_thread", 0, 0, true, false, false, - handle_no_sanitize_address_attribute, - false }, - { "no_sanitize_undefined", 0, 0, true, false, false, - handle_no_sanitize_undefined_attribute, - false }, - { "warning", 1, 1, true, false, false, - handle_error_attribute, false }, - { "error", 1, 1, true, false, false, - handle_error_attribute, false }, - { "target", 1, -1, true, false, false, - handle_target_attribute, false }, - { "target_clones", 1, -1, true, false, false, - handle_target_clones_attribute, false }, - { "optimize", 1, -1, true, false, false, - handle_optimize_attribute, false }, - /* For internal use only. The leading '*' both prevents its usage in - source code and signals that it may be overridden by machine tables. */ - { "*tm regparm", 0, 0, false, true, true, - ignore_attribute, false }, - { "no_split_stack", 0, 0, true, false, false, - handle_no_split_stack_attribute, false }, - /* For internal use (marking of builtins and runtime functions) only. - The name contains space to prevent its usage in source code. */ - { "fn spec", 1, 1, false, true, true, - handle_fnspec_attribute, false }, - { "warn_unused", 0, 0, false, false, false, - handle_warn_unused_attribute, false }, - { "returns_nonnull", 0, 0, false, true, true, - handle_returns_nonnull_attribute, false }, - { "omp declare simd", 0, -1, true, false, false, - handle_omp_declare_simd_attribute, false }, - { "cilk simd function", 0, -1, true, false, false, - handle_omp_declare_simd_attribute, false }, - { "simd", 0, 1, true, false, false, - handle_simd_attribute, false }, - { "omp declare target", 0, 0, true, false, false, - handle_omp_declare_target_attribute, false }, - { "omp declare target link", 0, 0, true, false, false, - handle_omp_declare_target_attribute, false }, - { "alloc_align", 1, 1, false, true, true, - handle_alloc_align_attribute, false }, - { "assume_aligned", 1, 2, false, true, true, - handle_assume_aligned_attribute, false }, - { "designated_init", 0, 0, false, true, false, - handle_designated_init_attribute, false }, - { "bnd_variable_size", 0, 0, true, false, false, - handle_bnd_variable_size_attribute, false }, - { "bnd_legacy", 0, 0, true, false, false, - handle_bnd_legacy, false }, - { "bnd_instrument", 0, 0, true, false, false, - handle_bnd_instrument, false }, - { "fallthrough", 0, 0, false, false, false, - handle_fallthrough_attribute, false }, - { NULL, 0, 0, false, false, false, NULL, false } -}; - -/* Give the specifications for the format attributes, used by C and all - descendants. - - All attributes referencing arguments should be additionally processed - in chkp_copy_function_type_adding_bounds for correct instrumentation - by Pointer Bounds Checker. - Current list of processed format attributes: format, format_arg. */ -const struct attribute_spec c_common_format_attribute_table[] = -{ - /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler, - affects_type_identity } */ - { "format", 3, 3, false, true, true, - handle_format_attribute, false }, - { "format_arg", 1, 1, false, true, true, - handle_format_arg_attribute, false }, - { NULL, 0, 0, false, false, false, NULL, false } -}; - /* Return identifier for address space AS. */ const char * @@ -5471,1130 +5155,6 @@ c_init_attributes (void) #undef DEF_ATTR_TREE_LIST } -/* Returns TRUE iff the attribute indicated by ATTR_ID takes a plain - identifier as an argument, so the front end shouldn't look it up. */ - -bool -attribute_takes_identifier_p (const_tree attr_id) -{ - const struct attribute_spec *spec = lookup_attribute_spec (attr_id); - if (spec == NULL) - /* Unknown attribute that we'll end up ignoring, return true so we - don't complain about an identifier argument. */ - return true; - else if (!strcmp ("mode", spec->name) - || !strcmp ("format", spec->name) - || !strcmp ("cleanup", spec->name)) - return true; - else - return targetm.attribute_takes_identifier_p (attr_id); -} - -/* Attribute handlers common to C front ends. */ - -/* Handle a "packed" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_packed_attribute (tree *node, tree name, tree ARG_UNUSED (args), - int flags, bool *no_add_attrs) -{ - if (TYPE_P (*node)) - { - if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE)) - *node = build_variant_type_copy (*node); - TYPE_PACKED (*node) = 1; - } - else if (TREE_CODE (*node) == FIELD_DECL) - { - if (TYPE_ALIGN (TREE_TYPE (*node)) <= BITS_PER_UNIT - /* Still pack bitfields. */ - && ! DECL_INITIAL (*node)) - warning (OPT_Wattributes, - "%qE attribute ignored for field of type %qT", - name, TREE_TYPE (*node)); - else - DECL_PACKED (*node) = 1; - } - /* We can't set DECL_PACKED for a VAR_DECL, because the bit is - used for DECL_REGISTER. It wouldn't mean anything anyway. - We can't set DECL_PACKED on the type of a TYPE_DECL, because - that changes what the typedef is typing. */ - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "nocommon" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_nocommon_attribute (tree *node, tree name, - tree ARG_UNUSED (args), - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - if (VAR_P (*node)) - DECL_COMMON (*node) = 0; - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "common" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_common_attribute (tree *node, tree name, tree ARG_UNUSED (args), - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - if (VAR_P (*node)) - DECL_COMMON (*node) = 1; - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "noreturn" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_noreturn_attribute (tree *node, tree name, tree ARG_UNUSED (args), - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - tree type = TREE_TYPE (*node); - - /* See FIXME comment in c_common_attribute_table. */ - if (TREE_CODE (*node) == FUNCTION_DECL - || objc_method_decl (TREE_CODE (*node))) - TREE_THIS_VOLATILE (*node) = 1; - else if (TREE_CODE (type) == POINTER_TYPE - && TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE) - TREE_TYPE (*node) - = (build_qualified_type - (build_pointer_type - (build_type_variant (TREE_TYPE (type), - TYPE_READONLY (TREE_TYPE (type)), 1)), - TYPE_QUALS (type))); - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "hot" and attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_hot_attribute (tree *node, tree name, tree ARG_UNUSED (args), - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - if (TREE_CODE (*node) == FUNCTION_DECL - || TREE_CODE (*node) == LABEL_DECL) - { - if (lookup_attribute ("cold", DECL_ATTRIBUTES (*node)) != NULL) - { - warning (OPT_Wattributes, "%qE attribute ignored due to conflict " - "with attribute %qs", name, "cold"); - *no_add_attrs = true; - } - /* Most of the rest of the hot processing is done later with - lookup_attribute. */ - } - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "cold" and attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_cold_attribute (tree *node, tree name, tree ARG_UNUSED (args), - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - if (TREE_CODE (*node) == FUNCTION_DECL - || TREE_CODE (*node) == LABEL_DECL) - { - if (lookup_attribute ("hot", DECL_ATTRIBUTES (*node)) != NULL) - { - warning (OPT_Wattributes, "%qE attribute ignored due to conflict " - "with attribute %qs", name, "hot"); - *no_add_attrs = true; - } - /* Most of the rest of the cold processing is done later with - lookup_attribute. */ - } - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "no_sanitize_address" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_no_sanitize_address_attribute (tree *node, tree name, tree, int, - bool *no_add_attrs) -{ - if (TREE_CODE (*node) != FUNCTION_DECL) - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "no_address_safety_analysis" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_no_address_safety_analysis_attribute (tree *node, tree name, tree, int, - bool *no_add_attrs) -{ - if (TREE_CODE (*node) != FUNCTION_DECL) - warning (OPT_Wattributes, "%qE attribute ignored", name); - else if (!lookup_attribute ("no_sanitize_address", DECL_ATTRIBUTES (*node))) - DECL_ATTRIBUTES (*node) - = tree_cons (get_identifier ("no_sanitize_address"), - NULL_TREE, DECL_ATTRIBUTES (*node)); - *no_add_attrs = true; - return NULL_TREE; -} - -/* Handle a "no_sanitize_undefined" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_no_sanitize_undefined_attribute (tree *node, tree name, tree, int, - bool *no_add_attrs) -{ - if (TREE_CODE (*node) != FUNCTION_DECL) - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "stack_protect" attribute; arguments as in - struct attribute_spec.handler. */ -static tree -handle_stack_protect_attribute (tree *node, tree name, tree, int, - bool *no_add_attrs) -{ - if (TREE_CODE (*node) != FUNCTION_DECL) - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - else - DECL_ATTRIBUTES (*node) - = tree_cons (get_identifier ("stack_protect"), - NULL_TREE, DECL_ATTRIBUTES (*node)); - - return NULL_TREE; -} - -/* Handle a "noinline" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_noinline_attribute (tree *node, tree name, - tree ARG_UNUSED (args), - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - if (TREE_CODE (*node) == FUNCTION_DECL) - { - if (lookup_attribute ("always_inline", DECL_ATTRIBUTES (*node))) - { - warning (OPT_Wattributes, "%qE attribute ignored due to conflict " - "with attribute %qs", name, "always_inline"); - *no_add_attrs = true; - } - else - DECL_UNINLINABLE (*node) = 1; - } - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "noclone" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_noclone_attribute (tree *node, tree name, - tree ARG_UNUSED (args), - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - if (TREE_CODE (*node) != FUNCTION_DECL) - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "no_icf" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_noicf_attribute (tree *node, tree name, - tree ARG_UNUSED (args), - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - if (TREE_CODE (*node) != FUNCTION_DECL) - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - - -/* Handle a "always_inline" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_always_inline_attribute (tree *node, tree name, - tree ARG_UNUSED (args), - int ARG_UNUSED (flags), - bool *no_add_attrs) -{ - if (TREE_CODE (*node) == FUNCTION_DECL) - { - if (lookup_attribute ("noinline", DECL_ATTRIBUTES (*node))) - { - warning (OPT_Wattributes, "%qE attribute ignored due to conflict " - "with %qs attribute", name, "noinline"); - *no_add_attrs = true; - } - else if (lookup_attribute ("target_clones", DECL_ATTRIBUTES (*node))) - { - warning (OPT_Wattributes, "%qE attribute ignored due to conflict " - "with %qs attribute", name, "target_clones"); - *no_add_attrs = true; - } - else - /* Set the attribute and mark it for disregarding inline - limits. */ - DECL_DISREGARD_INLINE_LIMITS (*node) = 1; - } - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "gnu_inline" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_gnu_inline_attribute (tree *node, tree name, - tree ARG_UNUSED (args), - int ARG_UNUSED (flags), - bool *no_add_attrs) -{ - if (TREE_CODE (*node) == FUNCTION_DECL && DECL_DECLARED_INLINE_P (*node)) - { - /* Do nothing else, just set the attribute. We'll get at - it later with lookup_attribute. */ - } - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "leaf" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_leaf_attribute (tree *node, tree name, - tree ARG_UNUSED (args), - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - if (TREE_CODE (*node) != FUNCTION_DECL) - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - if (!TREE_PUBLIC (*node)) - { - warning (OPT_Wattributes, "%qE attribute has no effect on unit local functions", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle an "artificial" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_artificial_attribute (tree *node, tree name, - tree ARG_UNUSED (args), - int ARG_UNUSED (flags), - bool *no_add_attrs) -{ - if (TREE_CODE (*node) == FUNCTION_DECL && DECL_DECLARED_INLINE_P (*node)) - { - /* Do nothing else, just set the attribute. We'll get at - it later with lookup_attribute. */ - } - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "flatten" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_flatten_attribute (tree *node, tree name, - tree args ATTRIBUTE_UNUSED, - int flags ATTRIBUTE_UNUSED, bool *no_add_attrs) -{ - if (TREE_CODE (*node) == FUNCTION_DECL) - /* Do nothing else, just set the attribute. We'll get at - it later with lookup_attribute. */ - ; - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "warning" or "error" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_error_attribute (tree *node, tree name, tree args, - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - if (TREE_CODE (*node) == FUNCTION_DECL - && TREE_CODE (TREE_VALUE (args)) == STRING_CST) - /* Do nothing else, just set the attribute. We'll get at - it later with lookup_attribute. */ - ; - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "used" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_used_attribute (tree *pnode, tree name, tree ARG_UNUSED (args), - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - tree node = *pnode; - - if (TREE_CODE (node) == FUNCTION_DECL - || (VAR_P (node) && TREE_STATIC (node)) - || (TREE_CODE (node) == TYPE_DECL)) - { - TREE_USED (node) = 1; - DECL_PRESERVE_P (node) = 1; - if (VAR_P (node)) - DECL_READ_P (node) = 1; - } - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "unused" attribute; arguments as in - struct attribute_spec.handler. */ - -tree -handle_unused_attribute (tree *node, tree name, tree ARG_UNUSED (args), - int flags, bool *no_add_attrs) -{ - if (DECL_P (*node)) - { - tree decl = *node; - - if (TREE_CODE (decl) == PARM_DECL - || VAR_OR_FUNCTION_DECL_P (decl) - || TREE_CODE (decl) == LABEL_DECL - || TREE_CODE (decl) == CONST_DECL - || TREE_CODE (decl) == TYPE_DECL) - { - TREE_USED (decl) = 1; - if (VAR_P (decl) || TREE_CODE (decl) == PARM_DECL) - DECL_READ_P (decl) = 1; - } - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - } - else - { - if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE)) - *node = build_variant_type_copy (*node); - TREE_USED (*node) = 1; - } - - return NULL_TREE; -} - -/* Handle a "externally_visible" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_externally_visible_attribute (tree *pnode, tree name, - tree ARG_UNUSED (args), - int ARG_UNUSED (flags), - bool *no_add_attrs) -{ - tree node = *pnode; - - if (VAR_OR_FUNCTION_DECL_P (node)) - { - if ((!TREE_STATIC (node) && TREE_CODE (node) != FUNCTION_DECL - && !DECL_EXTERNAL (node)) || !TREE_PUBLIC (node)) - { - warning (OPT_Wattributes, - "%qE attribute have effect only on public objects", name); - *no_add_attrs = true; - } - } - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle the "no_reorder" attribute. Arguments as in - struct attribute_spec.handler. */ - -static tree -handle_no_reorder_attribute (tree *pnode, - tree name, - tree, - int, - bool *no_add_attrs) -{ - tree node = *pnode; - - if (!VAR_OR_FUNCTION_DECL_P (node) - && !(TREE_STATIC (node) || DECL_EXTERNAL (node))) - { - warning (OPT_Wattributes, - "%qE attribute only affects top level objects", - name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "const" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_const_attribute (tree *node, tree name, tree ARG_UNUSED (args), - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - tree type = TREE_TYPE (*node); - - /* See FIXME comment on noreturn in c_common_attribute_table. */ - if (TREE_CODE (*node) == FUNCTION_DECL) - TREE_READONLY (*node) = 1; - else if (TREE_CODE (type) == POINTER_TYPE - && TREE_CODE (TREE_TYPE (type)) == FUNCTION_TYPE) - TREE_TYPE (*node) - = (build_qualified_type - (build_pointer_type - (build_type_variant (TREE_TYPE (type), 1, - TREE_THIS_VOLATILE (TREE_TYPE (type)))), - TYPE_QUALS (type))); - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "scalar_storage_order" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_scalar_storage_order_attribute (tree *node, tree name, tree args, - int flags, bool *no_add_attrs) -{ - tree id = TREE_VALUE (args); - tree type; - - if (TREE_CODE (*node) == TYPE_DECL - && ! (flags & ATTR_FLAG_CXX11)) - node = &TREE_TYPE (*node); - type = *node; - - if (BYTES_BIG_ENDIAN != WORDS_BIG_ENDIAN) - { - error ("scalar_storage_order is not supported because endianness " - "is not uniform"); - return NULL_TREE; - } - - if (RECORD_OR_UNION_TYPE_P (type) && !c_dialect_cxx ()) - { - bool reverse = false; - - if (TREE_CODE (id) == STRING_CST - && strcmp (TREE_STRING_POINTER (id), "big-endian") == 0) - reverse = !BYTES_BIG_ENDIAN; - else if (TREE_CODE (id) == STRING_CST - && strcmp (TREE_STRING_POINTER (id), "little-endian") == 0) - reverse = BYTES_BIG_ENDIAN; - else - { - error ("scalar_storage_order argument must be one of \"big-endian\"" - " or \"little-endian\""); - return NULL_TREE; - } - - if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE)) - { - if (reverse) - /* A type variant isn't good enough, since we don't want a cast - to such a type to be removed as a no-op. */ - *node = type = build_duplicate_type (type); - } - - TYPE_REVERSE_STORAGE_ORDER (type) = reverse; - return NULL_TREE; - } - - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - return NULL_TREE; -} - -/* Handle a "transparent_union" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_transparent_union_attribute (tree *node, tree name, - tree ARG_UNUSED (args), int flags, - bool *no_add_attrs) -{ - tree type; - - *no_add_attrs = true; - - if (TREE_CODE (*node) == TYPE_DECL - && ! (flags & ATTR_FLAG_CXX11)) - node = &TREE_TYPE (*node); - type = *node; - - if (TREE_CODE (type) == UNION_TYPE) - { - /* Make sure that the first field will work for a transparent union. - If the type isn't complete yet, leave the check to the code in - finish_struct. */ - if (TYPE_SIZE (type)) - { - tree first = first_field (type); - if (first == NULL_TREE - || DECL_ARTIFICIAL (first) - || TYPE_MODE (type) != DECL_MODE (first)) - goto ignored; - } - - if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE)) - { - /* If the type isn't complete yet, setting the flag - on a variant wouldn't ever be checked. */ - if (!TYPE_SIZE (type)) - goto ignored; - - /* build_duplicate_type doesn't work for C++. */ - if (c_dialect_cxx ()) - goto ignored; - - /* A type variant isn't good enough, since we don't want a cast - to such a type to be removed as a no-op. */ - *node = type = build_duplicate_type (type); - } - - for (tree t = TYPE_MAIN_VARIANT (type); t; t = TYPE_NEXT_VARIANT (t)) - TYPE_TRANSPARENT_AGGR (t) = 1; - return NULL_TREE; - } - - ignored: - warning (OPT_Wattributes, "%qE attribute ignored", name); - return NULL_TREE; -} - -/* Subroutine of handle_{con,de}structor_attribute. Evaluate ARGS to - get the requested priority for a constructor or destructor, - possibly issuing diagnostics for invalid or reserved - priorities. */ - -static priority_type -get_priority (tree args, bool is_destructor) -{ - HOST_WIDE_INT pri; - tree arg; - - if (!args) - return DEFAULT_INIT_PRIORITY; - - if (!SUPPORTS_INIT_PRIORITY) - { - if (is_destructor) - error ("destructor priorities are not supported"); - else - error ("constructor priorities are not supported"); - return DEFAULT_INIT_PRIORITY; - } - - arg = TREE_VALUE (args); - if (TREE_CODE (arg) == IDENTIFIER_NODE) - goto invalid; - if (arg == error_mark_node) - return DEFAULT_INIT_PRIORITY; - arg = default_conversion (arg); - if (!tree_fits_shwi_p (arg) - || !INTEGRAL_TYPE_P (TREE_TYPE (arg))) - goto invalid; - - pri = tree_to_shwi (arg); - if (pri < 0 || pri > MAX_INIT_PRIORITY) - goto invalid; - - if (pri <= MAX_RESERVED_INIT_PRIORITY) - { - if (is_destructor) - warning (0, - "destructor priorities from 0 to %d are reserved " - "for the implementation", - MAX_RESERVED_INIT_PRIORITY); - else - warning (0, - "constructor priorities from 0 to %d are reserved " - "for the implementation", - MAX_RESERVED_INIT_PRIORITY); - } - return pri; - - invalid: - if (is_destructor) - error ("destructor priorities must be integers from 0 to %d inclusive", - MAX_INIT_PRIORITY); - else - error ("constructor priorities must be integers from 0 to %d inclusive", - MAX_INIT_PRIORITY); - return DEFAULT_INIT_PRIORITY; -} - -/* Handle a "constructor" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_constructor_attribute (tree *node, tree name, tree args, - int ARG_UNUSED (flags), - bool *no_add_attrs) -{ - tree decl = *node; - tree type = TREE_TYPE (decl); - - if (TREE_CODE (decl) == FUNCTION_DECL - && TREE_CODE (type) == FUNCTION_TYPE - && decl_function_context (decl) == 0) - { - priority_type priority; - DECL_STATIC_CONSTRUCTOR (decl) = 1; - priority = get_priority (args, /*is_destructor=*/false); - SET_DECL_INIT_PRIORITY (decl, priority); - TREE_USED (decl) = 1; - } - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "destructor" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_destructor_attribute (tree *node, tree name, tree args, - int ARG_UNUSED (flags), - bool *no_add_attrs) -{ - tree decl = *node; - tree type = TREE_TYPE (decl); - - if (TREE_CODE (decl) == FUNCTION_DECL - && TREE_CODE (type) == FUNCTION_TYPE - && decl_function_context (decl) == 0) - { - priority_type priority; - DECL_STATIC_DESTRUCTOR (decl) = 1; - priority = get_priority (args, /*is_destructor=*/true); - SET_DECL_FINI_PRIORITY (decl, priority); - TREE_USED (decl) = 1; - } - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Nonzero if the mode is a valid vector mode for this architecture. - This returns nonzero even if there is no hardware support for the - vector mode, but we can emulate with narrower modes. */ - -static bool -vector_mode_valid_p (machine_mode mode) -{ - enum mode_class mclass = GET_MODE_CLASS (mode); - machine_mode innermode; - - /* Doh! What's going on? */ - if (mclass != MODE_VECTOR_INT - && mclass != MODE_VECTOR_FLOAT - && mclass != MODE_VECTOR_FRACT - && mclass != MODE_VECTOR_UFRACT - && mclass != MODE_VECTOR_ACCUM - && mclass != MODE_VECTOR_UACCUM) - return false; - - /* Hardware support. Woo hoo! */ - if (targetm.vector_mode_supported_p (mode)) - return true; - - innermode = GET_MODE_INNER (mode); - - /* We should probably return 1 if requesting V4DI and we have no DI, - but we have V2DI, but this is probably very unlikely. */ - - /* If we have support for the inner mode, we can safely emulate it. - We may not have V2DI, but me can emulate with a pair of DIs. */ - return targetm.scalar_mode_supported_p (innermode); -} - - -/* Handle a "mode" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_mode_attribute (tree *node, tree name, tree args, - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - tree type = *node; - tree ident = TREE_VALUE (args); - - *no_add_attrs = true; - - if (TREE_CODE (ident) != IDENTIFIER_NODE) - warning (OPT_Wattributes, "%qE attribute ignored", name); - else - { - int j; - const char *p = IDENTIFIER_POINTER (ident); - int len = strlen (p); - machine_mode mode = VOIDmode; - tree typefm; - bool valid_mode; - - if (len > 4 && p[0] == '_' && p[1] == '_' - && p[len - 1] == '_' && p[len - 2] == '_') - { - char *newp = (char *) alloca (len - 1); - - strcpy (newp, &p[2]); - newp[len - 4] = '\0'; - p = newp; - } - - /* Change this type to have a type with the specified mode. - First check for the special modes. */ - if (!strcmp (p, "byte")) - mode = byte_mode; - else if (!strcmp (p, "word")) - mode = word_mode; - else if (!strcmp (p, "pointer")) - mode = ptr_mode; - else if (!strcmp (p, "libgcc_cmp_return")) - mode = targetm.libgcc_cmp_return_mode (); - else if (!strcmp (p, "libgcc_shift_count")) - mode = targetm.libgcc_shift_count_mode (); - else if (!strcmp (p, "unwind_word")) - mode = targetm.unwind_word_mode (); - else - for (j = 0; j < NUM_MACHINE_MODES; j++) - if (!strcmp (p, GET_MODE_NAME (j))) - { - mode = (machine_mode) j; - break; - } - - if (mode == VOIDmode) - { - error ("unknown machine mode %qE", ident); - return NULL_TREE; - } - - valid_mode = false; - switch (GET_MODE_CLASS (mode)) - { - case MODE_INT: - case MODE_PARTIAL_INT: - case MODE_FLOAT: - case MODE_DECIMAL_FLOAT: - case MODE_FRACT: - case MODE_UFRACT: - case MODE_ACCUM: - case MODE_UACCUM: - valid_mode = targetm.scalar_mode_supported_p (mode); - break; - - case MODE_COMPLEX_INT: - case MODE_COMPLEX_FLOAT: - valid_mode = targetm.scalar_mode_supported_p (GET_MODE_INNER (mode)); - break; - - case MODE_VECTOR_INT: - case MODE_VECTOR_FLOAT: - case MODE_VECTOR_FRACT: - case MODE_VECTOR_UFRACT: - case MODE_VECTOR_ACCUM: - case MODE_VECTOR_UACCUM: - warning (OPT_Wattributes, "specifying vector types with " - "__attribute__ ((mode)) is deprecated"); - warning (OPT_Wattributes, - "use __attribute__ ((vector_size)) instead"); - valid_mode = vector_mode_valid_p (mode); - break; - - default: - break; - } - if (!valid_mode) - { - error ("unable to emulate %qs", p); - return NULL_TREE; - } - - if (POINTER_TYPE_P (type)) - { - addr_space_t as = TYPE_ADDR_SPACE (TREE_TYPE (type)); - tree (*fn)(tree, machine_mode, bool); - - if (!targetm.addr_space.valid_pointer_mode (mode, as)) - { - error ("invalid pointer mode %qs", p); - return NULL_TREE; - } - - if (TREE_CODE (type) == POINTER_TYPE) - fn = build_pointer_type_for_mode; - else - fn = build_reference_type_for_mode; - typefm = fn (TREE_TYPE (type), mode, false); - } - else - { - /* For fixed-point modes, we need to test if the signness of type - and the machine mode are consistent. */ - if (ALL_FIXED_POINT_MODE_P (mode) - && TYPE_UNSIGNED (type) != UNSIGNED_FIXED_POINT_MODE_P (mode)) - { - error ("signedness of type and machine mode %qs don%'t match", p); - return NULL_TREE; - } - /* For fixed-point modes, we need to pass saturating info. */ - typefm = lang_hooks.types.type_for_mode (mode, - ALL_FIXED_POINT_MODE_P (mode) ? TYPE_SATURATING (type) - : TYPE_UNSIGNED (type)); - } - - if (typefm == NULL_TREE) - { - error ("no data type for mode %qs", p); - return NULL_TREE; - } - else if (TREE_CODE (type) == ENUMERAL_TYPE) - { - /* For enumeral types, copy the precision from the integer - type returned above. If not an INTEGER_TYPE, we can't use - this mode for this type. */ - if (TREE_CODE (typefm) != INTEGER_TYPE) - { - error ("cannot use mode %qs for enumeral types", p); - return NULL_TREE; - } - - if (flags & ATTR_FLAG_TYPE_IN_PLACE) - { - TYPE_PRECISION (type) = TYPE_PRECISION (typefm); - typefm = type; - } - else - { - /* We cannot build a type variant, as there's code that assumes - that TYPE_MAIN_VARIANT has the same mode. This includes the - debug generators. Instead, create a subrange type. This - results in all of the enumeral values being emitted only once - in the original, and the subtype gets them by reference. */ - if (TYPE_UNSIGNED (type)) - typefm = make_unsigned_type (TYPE_PRECISION (typefm)); - else - typefm = make_signed_type (TYPE_PRECISION (typefm)); - TREE_TYPE (typefm) = type; - } - } - else if (VECTOR_MODE_P (mode) - ? TREE_CODE (type) != TREE_CODE (TREE_TYPE (typefm)) - : TREE_CODE (type) != TREE_CODE (typefm)) - { - error ("mode %qs applied to inappropriate type", p); - return NULL_TREE; - } - - *node = typefm; - } - - return NULL_TREE; -} - -/* Handle a "section" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_section_attribute (tree *node, tree ARG_UNUSED (name), tree args, - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - tree decl = *node; - - if (!targetm_common.have_named_sections) - { - error_at (DECL_SOURCE_LOCATION (*node), - "section attributes are not supported for this target"); - goto fail; - } - - user_defined_section_attribute = true; - - if (!VAR_OR_FUNCTION_DECL_P (decl)) - { - error ("section attribute not allowed for %q+D", *node); - goto fail; - } - - if (TREE_CODE (TREE_VALUE (args)) != STRING_CST) - { - error ("section attribute argument not a string constant"); - goto fail; - } - - if (VAR_P (decl) - && current_function_decl != NULL_TREE - && !TREE_STATIC (decl)) - { - error_at (DECL_SOURCE_LOCATION (decl), - "section attribute cannot be specified for local variables"); - goto fail; - } - - /* The decl may have already been given a section attribute - from a previous declaration. Ensure they match. */ - if (DECL_SECTION_NAME (decl) != NULL - && strcmp (DECL_SECTION_NAME (decl), - TREE_STRING_POINTER (TREE_VALUE (args))) != 0) - { - error ("section of %q+D conflicts with previous declaration", *node); - goto fail; - } - - if (VAR_P (decl) - && !targetm.have_tls && targetm.emutls.tmpl_section - && DECL_THREAD_LOCAL_P (decl)) - { - error ("section of %q+D cannot be overridden", *node); - goto fail; - } - - set_decl_section_name (decl, TREE_STRING_POINTER (TREE_VALUE (args))); - return NULL_TREE; - -fail: - *no_add_attrs = true; - return NULL_TREE; -} - /* Check whether ALIGN is a valid user-specified alignment. If so, return its base-2 log; if not, output an error and return -1. If ALLOW_ZERO then 0 is valid and should result in a return of -1 with @@ -6628,478 +5188,6 @@ check_user_alignment (const_tree align, bool allow_zero) return i; } -/* If in c++-11, check if the c++-11 alignment constraint with respect - to fundamental alignment (in [dcl.align]) are satisfied. If not in - c++-11 mode, does nothing. - - [dcl.align]2/ says: - - [* if the constant expression evaluates to a fundamental alignment, - the alignment requirement of the declared entity shall be the - specified fundamental alignment. - - * if the constant expression evaluates to an extended alignment - and the implementation supports that alignment in the context - of the declaration, the alignment of the declared entity shall - be that alignment - - * if the constant expression evaluates to an extended alignment - and the implementation does not support that alignment in the - context of the declaration, the program is ill-formed]. */ - -static bool -check_cxx_fundamental_alignment_constraints (tree node, - unsigned align_log, - int flags) -{ - bool alignment_too_large_p = false; - unsigned requested_alignment = (1U << align_log) * BITS_PER_UNIT; - unsigned max_align = 0; - - if ((!(flags & ATTR_FLAG_CXX11) && !warn_cxx_compat) - || (node == NULL_TREE || node == error_mark_node)) - return true; - - if (cxx_fundamental_alignment_p (requested_alignment)) - return true; - - if (VAR_P (node)) - { - if (TREE_STATIC (node) || DECL_EXTERNAL (node)) - /* For file scope variables and static members, the target supports - alignments that are at most MAX_OFILE_ALIGNMENT. */ - max_align = MAX_OFILE_ALIGNMENT; - else - /* For stack variables, the target supports at most - MAX_STACK_ALIGNMENT. */ - max_align = MAX_STACK_ALIGNMENT; - if (requested_alignment > max_align) - alignment_too_large_p = true; - } - /* Let's be liberal for types and fields; don't limit their alignment any - more than check_user_alignment already did. */ - - if (alignment_too_large_p) - pedwarn (input_location, OPT_Wattributes, - "requested alignment %d is larger than %d", - requested_alignment / BITS_PER_UNIT, max_align / BITS_PER_UNIT); - - return !alignment_too_large_p; -} - -/* Handle a "aligned" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_aligned_attribute (tree *node, tree ARG_UNUSED (name), tree args, - int flags, bool *no_add_attrs) -{ - tree decl = NULL_TREE; - tree *type = NULL; - int is_type = 0; - tree align_expr; - int i; - - if (args) - { - align_expr = TREE_VALUE (args); - if (align_expr && TREE_CODE (align_expr) != IDENTIFIER_NODE - && TREE_CODE (align_expr) != FUNCTION_DECL) - align_expr = default_conversion (align_expr); - } - else - align_expr = size_int (ATTRIBUTE_ALIGNED_VALUE / BITS_PER_UNIT); - - if (DECL_P (*node)) - { - decl = *node; - type = &TREE_TYPE (decl); - is_type = TREE_CODE (*node) == TYPE_DECL; - } - else if (TYPE_P (*node)) - type = node, is_type = 1; - - if ((i = check_user_alignment (align_expr, true)) == -1 - || !check_cxx_fundamental_alignment_constraints (*node, i, flags)) - *no_add_attrs = true; - else if (is_type) - { - if ((flags & (int) ATTR_FLAG_TYPE_IN_PLACE)) - /* OK, modify the type in place. */; - /* If we have a TYPE_DECL, then copy the type, so that we - don't accidentally modify a builtin type. See pushdecl. */ - else if (decl && TREE_TYPE (decl) != error_mark_node - && DECL_ORIGINAL_TYPE (decl) == NULL_TREE) - { - tree tt = TREE_TYPE (decl); - *type = build_variant_type_copy (*type); - DECL_ORIGINAL_TYPE (decl) = tt; - TYPE_NAME (*type) = decl; - TREE_USED (*type) = TREE_USED (decl); - TREE_TYPE (decl) = *type; - } - else - *type = build_variant_type_copy (*type); - - SET_TYPE_ALIGN (*type, (1U << i) * BITS_PER_UNIT); - TYPE_USER_ALIGN (*type) = 1; - } - else if (! VAR_OR_FUNCTION_DECL_P (decl) - && TREE_CODE (decl) != FIELD_DECL) - { - error ("alignment may not be specified for %q+D", decl); - *no_add_attrs = true; - } - else if (DECL_USER_ALIGN (decl) - && DECL_ALIGN (decl) > (1U << i) * BITS_PER_UNIT) - /* C++-11 [dcl.align/4]: - - When multiple alignment-specifiers are specified for an - entity, the alignment requirement shall be set to the - strictest specified alignment. - - This formally comes from the c++11 specification but we are - doing it for the GNU attribute syntax as well. */ - *no_add_attrs = true; - else if (TREE_CODE (decl) == FUNCTION_DECL - && DECL_ALIGN (decl) > (1U << i) * BITS_PER_UNIT) - { - if (DECL_USER_ALIGN (decl)) - error ("alignment for %q+D was previously specified as %d " - "and may not be decreased", decl, - DECL_ALIGN (decl) / BITS_PER_UNIT); - else - error ("alignment for %q+D must be at least %d", decl, - DECL_ALIGN (decl) / BITS_PER_UNIT); - *no_add_attrs = true; - } - else - { - SET_DECL_ALIGN (decl, (1U << i) * BITS_PER_UNIT); - DECL_USER_ALIGN (decl) = 1; - } - - return NULL_TREE; -} - -/* Handle a "weak" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_weak_attribute (tree *node, tree name, - tree ARG_UNUSED (args), - int ARG_UNUSED (flags), - bool * ARG_UNUSED (no_add_attrs)) -{ - if (TREE_CODE (*node) == FUNCTION_DECL - && DECL_DECLARED_INLINE_P (*node)) - { - warning (OPT_Wattributes, "inline function %q+D declared weak", *node); - *no_add_attrs = true; - } - else if (lookup_attribute ("ifunc", DECL_ATTRIBUTES (*node))) - { - error ("indirect function %q+D cannot be declared weak", *node); - *no_add_attrs = true; - return NULL_TREE; - } - else if (VAR_OR_FUNCTION_DECL_P (*node)) - declare_weak (*node); - else - warning (OPT_Wattributes, "%qE attribute ignored", name); - - return NULL_TREE; -} - -/* Handle a "noplt" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_noplt_attribute (tree *node, tree name, - tree ARG_UNUSED (args), - int ARG_UNUSED (flags), - bool * ARG_UNUSED (no_add_attrs)) -{ - if (TREE_CODE (*node) != FUNCTION_DECL) - { - warning (OPT_Wattributes, - "%qE attribute is only applicable on functions", name); - *no_add_attrs = true; - return NULL_TREE; - } - return NULL_TREE; -} - -/* Handle an "alias" or "ifunc" attribute; arguments as in - struct attribute_spec.handler, except that IS_ALIAS tells us - whether this is an alias as opposed to ifunc attribute. */ - -static tree -handle_alias_ifunc_attribute (bool is_alias, tree *node, tree name, tree args, - bool *no_add_attrs) -{ - tree decl = *node; - - if (TREE_CODE (decl) != FUNCTION_DECL - && (!is_alias || !VAR_P (decl))) - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - else if ((TREE_CODE (decl) == FUNCTION_DECL && DECL_INITIAL (decl)) - || (TREE_CODE (decl) != FUNCTION_DECL - && TREE_PUBLIC (decl) && !DECL_EXTERNAL (decl)) - /* A static variable declaration is always a tentative definition, - but the alias is a non-tentative definition which overrides. */ - || (TREE_CODE (decl) != FUNCTION_DECL - && ! TREE_PUBLIC (decl) && DECL_INITIAL (decl))) - { - error ("%q+D defined both normally and as %qE attribute", decl, name); - *no_add_attrs = true; - return NULL_TREE; - } - else if (!is_alias - && (lookup_attribute ("weak", DECL_ATTRIBUTES (decl)) - || lookup_attribute ("weakref", DECL_ATTRIBUTES (decl)))) - { - error ("weak %q+D cannot be defined %qE", decl, name); - *no_add_attrs = true; - return NULL_TREE; - } - - /* Note that the very first time we process a nested declaration, - decl_function_context will not be set. Indeed, *would* never - be set except for the DECL_INITIAL/DECL_EXTERNAL frobbery that - we do below. After such frobbery, pushdecl would set the context. - In any case, this is never what we want. */ - else if (decl_function_context (decl) == 0 && current_function_decl == NULL) - { - tree id; - - id = TREE_VALUE (args); - if (TREE_CODE (id) != STRING_CST) - { - error ("attribute %qE argument not a string", name); - *no_add_attrs = true; - return NULL_TREE; - } - id = get_identifier (TREE_STRING_POINTER (id)); - /* This counts as a use of the object pointed to. */ - TREE_USED (id) = 1; - - if (TREE_CODE (decl) == FUNCTION_DECL) - DECL_INITIAL (decl) = error_mark_node; - else - TREE_STATIC (decl) = 1; - - if (!is_alias) - /* ifuncs are also aliases, so set that attribute too. */ - DECL_ATTRIBUTES (decl) - = tree_cons (get_identifier ("alias"), args, DECL_ATTRIBUTES (decl)); - } - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - if (decl_in_symtab_p (*node)) - { - struct symtab_node *n = symtab_node::get (decl); - if (n && n->refuse_visibility_changes) - { - if (is_alias) - error ("%+D declared alias after being used", decl); - else - error ("%+D declared ifunc after being used", decl); - } - } - - - return NULL_TREE; -} - -/* Handle an "alias" or "ifunc" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_ifunc_attribute (tree *node, tree name, tree args, - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - return handle_alias_ifunc_attribute (false, node, name, args, no_add_attrs); -} - -/* Handle an "alias" or "ifunc" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_alias_attribute (tree *node, tree name, tree args, - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - return handle_alias_ifunc_attribute (true, node, name, args, no_add_attrs); -} - -/* Handle a "weakref" attribute; arguments as in struct - attribute_spec.handler. */ - -static tree -handle_weakref_attribute (tree *node, tree ARG_UNUSED (name), tree args, - int flags, bool *no_add_attrs) -{ - tree attr = NULL_TREE; - - /* We must ignore the attribute when it is associated with - local-scoped decls, since attribute alias is ignored and many - such symbols do not even have a DECL_WEAK field. */ - if (decl_function_context (*node) - || current_function_decl - || !VAR_OR_FUNCTION_DECL_P (*node)) - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - return NULL_TREE; - } - - if (lookup_attribute ("ifunc", DECL_ATTRIBUTES (*node))) - { - error ("indirect function %q+D cannot be declared weakref", *node); - *no_add_attrs = true; - return NULL_TREE; - } - - /* The idea here is that `weakref("name")' mutates into `weakref, - alias("name")', and weakref without arguments, in turn, - implicitly adds weak. */ - - if (args) - { - attr = tree_cons (get_identifier ("alias"), args, attr); - attr = tree_cons (get_identifier ("weakref"), NULL_TREE, attr); - - *no_add_attrs = true; - - decl_attributes (node, attr, flags); - } - else - { - if (lookup_attribute ("alias", DECL_ATTRIBUTES (*node))) - error_at (DECL_SOURCE_LOCATION (*node), - "weakref attribute must appear before alias attribute"); - - /* Can't call declare_weak because it wants this to be TREE_PUBLIC, - and that isn't supported; and because it wants to add it to - the list of weak decls, which isn't helpful. */ - DECL_WEAK (*node) = 1; - } - - if (decl_in_symtab_p (*node)) - { - struct symtab_node *n = symtab_node::get (*node); - if (n && n->refuse_visibility_changes) - error ("%+D declared weakref after being used", *node); - } - - return NULL_TREE; -} - -/* Handle an "visibility" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_visibility_attribute (tree *node, tree name, tree args, - int ARG_UNUSED (flags), - bool *ARG_UNUSED (no_add_attrs)) -{ - tree decl = *node; - tree id = TREE_VALUE (args); - enum symbol_visibility vis; - - if (TYPE_P (*node)) - { - if (TREE_CODE (*node) == ENUMERAL_TYPE) - /* OK */; - else if (!RECORD_OR_UNION_TYPE_P (*node)) - { - warning (OPT_Wattributes, "%qE attribute ignored on non-class types", - name); - return NULL_TREE; - } - else if (TYPE_FIELDS (*node)) - { - error ("%qE attribute ignored because %qT is already defined", - name, *node); - return NULL_TREE; - } - } - else if (decl_function_context (decl) != 0 || !TREE_PUBLIC (decl)) - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - return NULL_TREE; - } - - if (TREE_CODE (id) != STRING_CST) - { - error ("visibility argument not a string"); - return NULL_TREE; - } - - /* If this is a type, set the visibility on the type decl. */ - if (TYPE_P (decl)) - { - decl = TYPE_NAME (decl); - if (!decl) - return NULL_TREE; - if (TREE_CODE (decl) == IDENTIFIER_NODE) - { - warning (OPT_Wattributes, "%qE attribute ignored on types", - name); - return NULL_TREE; - } - } - - if (strcmp (TREE_STRING_POINTER (id), "default") == 0) - vis = VISIBILITY_DEFAULT; - else if (strcmp (TREE_STRING_POINTER (id), "internal") == 0) - vis = VISIBILITY_INTERNAL; - else if (strcmp (TREE_STRING_POINTER (id), "hidden") == 0) - vis = VISIBILITY_HIDDEN; - else if (strcmp (TREE_STRING_POINTER (id), "protected") == 0) - vis = VISIBILITY_PROTECTED; - else - { - error ("visibility argument must be one of \"default\", \"hidden\", \"protected\" or \"internal\""); - vis = VISIBILITY_DEFAULT; - } - - if (DECL_VISIBILITY_SPECIFIED (decl) - && vis != DECL_VISIBILITY (decl)) - { - tree attributes = (TYPE_P (*node) - ? TYPE_ATTRIBUTES (*node) - : DECL_ATTRIBUTES (decl)); - if (lookup_attribute ("visibility", attributes)) - error ("%qD redeclared with different visibility", decl); - else if (TARGET_DLLIMPORT_DECL_ATTRIBUTES - && lookup_attribute ("dllimport", attributes)) - error ("%qD was declared %qs which implies default visibility", - decl, "dllimport"); - else if (TARGET_DLLIMPORT_DECL_ATTRIBUTES - && lookup_attribute ("dllexport", attributes)) - error ("%qD was declared %qs which implies default visibility", - decl, "dllexport"); - } - - DECL_VISIBILITY (decl) = vis; - DECL_VISIBILITY_SPECIFIED (decl) = 1; - - /* Go ahead and attach the attribute to the node as well. This is needed - so we can determine whether we have VISIBILITY_DEFAULT because the - visibility was not specified, or because it was explicitly overridden - from the containing scope. */ - - return NULL_TREE; -} - /* Determine the ELF symbol visibility for DECL, which is either a variable or a function. It is an error to use this function if a definition of DECL is not available in this translation unit. @@ -7145,892 +5233,6 @@ c_determine_visibility (tree decl) return false; } -/* Handle an "tls_model" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_tls_model_attribute (tree *node, tree name, tree args, - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - tree id; - tree decl = *node; - enum tls_model kind; - - *no_add_attrs = true; - - if (!VAR_P (decl) || !DECL_THREAD_LOCAL_P (decl)) - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - return NULL_TREE; - } - - kind = DECL_TLS_MODEL (decl); - id = TREE_VALUE (args); - if (TREE_CODE (id) != STRING_CST) - { - error ("tls_model argument not a string"); - return NULL_TREE; - } - - if (!strcmp (TREE_STRING_POINTER (id), "local-exec")) - kind = TLS_MODEL_LOCAL_EXEC; - else if (!strcmp (TREE_STRING_POINTER (id), "initial-exec")) - kind = TLS_MODEL_INITIAL_EXEC; - else if (!strcmp (TREE_STRING_POINTER (id), "local-dynamic")) - kind = optimize ? TLS_MODEL_LOCAL_DYNAMIC : TLS_MODEL_GLOBAL_DYNAMIC; - else if (!strcmp (TREE_STRING_POINTER (id), "global-dynamic")) - kind = TLS_MODEL_GLOBAL_DYNAMIC; - else - error ("tls_model argument must be one of \"local-exec\", \"initial-exec\", \"local-dynamic\" or \"global-dynamic\""); - - set_decl_tls_model (decl, kind); - return NULL_TREE; -} - -/* Handle a "no_instrument_function" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_no_instrument_function_attribute (tree *node, tree name, - tree ARG_UNUSED (args), - int ARG_UNUSED (flags), - bool *no_add_attrs) -{ - tree decl = *node; - - if (TREE_CODE (decl) != FUNCTION_DECL) - { - error_at (DECL_SOURCE_LOCATION (decl), - "%qE attribute applies only to functions", name); - *no_add_attrs = true; - } - else - DECL_NO_INSTRUMENT_FUNCTION_ENTRY_EXIT (decl) = 1; - - return NULL_TREE; -} - -/* Handle a "no_profile_instrument_function" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_no_profile_instrument_function_attribute (tree *node, tree name, tree, - int, bool *no_add_attrs) -{ - if (TREE_CODE (*node) != FUNCTION_DECL) - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "malloc" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_malloc_attribute (tree *node, tree name, tree ARG_UNUSED (args), - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - if (TREE_CODE (*node) == FUNCTION_DECL - && POINTER_TYPE_P (TREE_TYPE (TREE_TYPE (*node)))) - DECL_IS_MALLOC (*node) = 1; - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "alloc_size" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_alloc_size_attribute (tree *node, tree ARG_UNUSED (name), tree args, - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - unsigned arg_count = type_num_arguments (*node); - for (; args; args = TREE_CHAIN (args)) - { - tree position = TREE_VALUE (args); - if (position && TREE_CODE (position) != IDENTIFIER_NODE - && TREE_CODE (position) != FUNCTION_DECL) - position = default_conversion (position); - - if (!tree_fits_uhwi_p (position) - || !arg_count - || !IN_RANGE (tree_to_uhwi (position), 1, arg_count)) - { - warning (OPT_Wattributes, - "alloc_size parameter outside range"); - *no_add_attrs = true; - return NULL_TREE; - } - } - return NULL_TREE; -} - -/* Handle a "alloc_align" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_alloc_align_attribute (tree *node, tree, tree args, int, - bool *no_add_attrs) -{ - unsigned arg_count = type_num_arguments (*node); - tree position = TREE_VALUE (args); - if (position && TREE_CODE (position) != IDENTIFIER_NODE - && TREE_CODE (position) != FUNCTION_DECL) - position = default_conversion (position); - - if (!tree_fits_uhwi_p (position) - || !arg_count - || !IN_RANGE (tree_to_uhwi (position), 1, arg_count)) - { - warning (OPT_Wattributes, - "alloc_align parameter outside range"); - *no_add_attrs = true; - return NULL_TREE; - } - return NULL_TREE; -} - -/* Handle a "assume_aligned" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_assume_aligned_attribute (tree *, tree, tree args, int, - bool *no_add_attrs) -{ - for (; args; args = TREE_CHAIN (args)) - { - tree position = TREE_VALUE (args); - if (position && TREE_CODE (position) != IDENTIFIER_NODE - && TREE_CODE (position) != FUNCTION_DECL) - position = default_conversion (position); - - if (TREE_CODE (position) != INTEGER_CST) - { - warning (OPT_Wattributes, - "assume_aligned parameter not integer constant"); - *no_add_attrs = true; - return NULL_TREE; - } - } - return NULL_TREE; -} - -/* Handle a "fn spec" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_fnspec_attribute (tree *node ATTRIBUTE_UNUSED, tree ARG_UNUSED (name), - tree args, int ARG_UNUSED (flags), - bool *no_add_attrs ATTRIBUTE_UNUSED) -{ - gcc_assert (args - && TREE_CODE (TREE_VALUE (args)) == STRING_CST - && !TREE_CHAIN (args)); - return NULL_TREE; -} - -/* Handle a "bnd_variable_size" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_bnd_variable_size_attribute (tree *node, tree name, tree ARG_UNUSED (args), - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - if (TREE_CODE (*node) != FIELD_DECL) - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "bnd_legacy" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_bnd_legacy (tree *node, tree name, tree ARG_UNUSED (args), - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - if (TREE_CODE (*node) != FUNCTION_DECL) - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "bnd_instrument" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_bnd_instrument (tree *node, tree name, tree ARG_UNUSED (args), - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - if (TREE_CODE (*node) != FUNCTION_DECL) - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "warn_unused" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_warn_unused_attribute (tree *node, tree name, - tree args ATTRIBUTE_UNUSED, - int flags ATTRIBUTE_UNUSED, bool *no_add_attrs) -{ - if (TYPE_P (*node)) - /* Do nothing else, just set the attribute. We'll get at - it later with lookup_attribute. */ - ; - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle an "omp declare simd" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_omp_declare_simd_attribute (tree *, tree, tree, int, bool *) -{ - return NULL_TREE; -} - -/* Handle a "simd" attribute. */ - -static tree -handle_simd_attribute (tree *node, tree name, tree args, int, bool *no_add_attrs) -{ - if (TREE_CODE (*node) == FUNCTION_DECL) - { - if (lookup_attribute ("cilk simd function", - DECL_ATTRIBUTES (*node)) != NULL) - { - error_at (DECL_SOURCE_LOCATION (*node), - "%<__simd__%> attribute cannot be used in the same " - "function marked as a Cilk Plus SIMD-enabled function"); - *no_add_attrs = true; - } - else - { - tree t = get_identifier ("omp declare simd"); - tree attr = NULL_TREE; - if (args) - { - tree id = TREE_VALUE (args); - - if (TREE_CODE (id) != STRING_CST) - { - error ("attribute %qE argument not a string", name); - *no_add_attrs = true; - return NULL_TREE; - } - - if (strcmp (TREE_STRING_POINTER (id), "notinbranch") == 0) - attr = build_omp_clause (DECL_SOURCE_LOCATION (*node), - OMP_CLAUSE_NOTINBRANCH); - else - if (strcmp (TREE_STRING_POINTER (id), "inbranch") == 0) - attr = build_omp_clause (DECL_SOURCE_LOCATION (*node), - OMP_CLAUSE_INBRANCH); - else - { - error ("only %<inbranch%> and %<notinbranch%> flags are " - "allowed for %<__simd__%> attribute"); - *no_add_attrs = true; - return NULL_TREE; - } - } - - DECL_ATTRIBUTES (*node) = tree_cons (t, - build_tree_list (NULL_TREE, - attr), - DECL_ATTRIBUTES (*node)); - } - } - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle an "omp declare target" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_omp_declare_target_attribute (tree *, tree, tree, int, bool *) -{ - return NULL_TREE; -} - -/* Handle a "returns_twice" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_returns_twice_attribute (tree *node, tree name, tree ARG_UNUSED (args), - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - if (TREE_CODE (*node) == FUNCTION_DECL) - DECL_IS_RETURNS_TWICE (*node) = 1; - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "no_limit_stack" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_no_limit_stack_attribute (tree *node, tree name, - tree ARG_UNUSED (args), - int ARG_UNUSED (flags), - bool *no_add_attrs) -{ - tree decl = *node; - - if (TREE_CODE (decl) != FUNCTION_DECL) - { - error_at (DECL_SOURCE_LOCATION (decl), - "%qE attribute applies only to functions", name); - *no_add_attrs = true; - } - else if (DECL_INITIAL (decl)) - { - error_at (DECL_SOURCE_LOCATION (decl), - "can%'t set %qE attribute after definition", name); - *no_add_attrs = true; - } - else - DECL_NO_LIMIT_STACK (decl) = 1; - - return NULL_TREE; -} - -/* Handle a "pure" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_pure_attribute (tree *node, tree name, tree ARG_UNUSED (args), - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - if (TREE_CODE (*node) == FUNCTION_DECL) - DECL_PURE_P (*node) = 1; - /* ??? TODO: Support types. */ - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Digest an attribute list destined for a transactional memory statement. - ALLOWED is the set of attributes that are allowed for this statement; - return the attribute we parsed. Multiple attributes are never allowed. */ - -int -parse_tm_stmt_attr (tree attrs, int allowed) -{ - tree a_seen = NULL; - int m_seen = 0; - - for ( ; attrs ; attrs = TREE_CHAIN (attrs)) - { - tree a = TREE_PURPOSE (attrs); - int m = 0; - - if (is_attribute_p ("outer", a)) - m = TM_STMT_ATTR_OUTER; - - if ((m & allowed) == 0) - { - warning (OPT_Wattributes, "%qE attribute directive ignored", a); - continue; - } - - if (m_seen == 0) - { - a_seen = a; - m_seen = m; - } - else if (m_seen == m) - warning (OPT_Wattributes, "%qE attribute duplicated", a); - else - warning (OPT_Wattributes, "%qE attribute follows %qE", a, a_seen); - } - - return m_seen; -} - -/* Transform a TM attribute name into a maskable integer and back. - Note that NULL (i.e. no attribute) is mapped to UNKNOWN, corresponding - to how the lack of an attribute is treated. */ - -int -tm_attr_to_mask (tree attr) -{ - if (attr == NULL) - return 0; - if (is_attribute_p ("transaction_safe", attr)) - return TM_ATTR_SAFE; - if (is_attribute_p ("transaction_callable", attr)) - return TM_ATTR_CALLABLE; - if (is_attribute_p ("transaction_pure", attr)) - return TM_ATTR_PURE; - if (is_attribute_p ("transaction_unsafe", attr)) - return TM_ATTR_IRREVOCABLE; - if (is_attribute_p ("transaction_may_cancel_outer", attr)) - return TM_ATTR_MAY_CANCEL_OUTER; - return 0; -} - -tree -tm_mask_to_attr (int mask) -{ - const char *str; - switch (mask) - { - case TM_ATTR_SAFE: - str = "transaction_safe"; - break; - case TM_ATTR_CALLABLE: - str = "transaction_callable"; - break; - case TM_ATTR_PURE: - str = "transaction_pure"; - break; - case TM_ATTR_IRREVOCABLE: - str = "transaction_unsafe"; - break; - case TM_ATTR_MAY_CANCEL_OUTER: - str = "transaction_may_cancel_outer"; - break; - default: - gcc_unreachable (); - } - return get_identifier (str); -} - -/* Return the first TM attribute seen in LIST. */ - -tree -find_tm_attribute (tree list) -{ - for (; list ; list = TREE_CHAIN (list)) - { - tree name = TREE_PURPOSE (list); - if (tm_attr_to_mask (name) != 0) - return name; - } - return NULL_TREE; -} - -/* Handle the TM attributes; arguments as in struct attribute_spec.handler. - Here we accept only function types, and verify that none of the other - function TM attributes are also applied. */ -/* ??? We need to accept class types for C++, but not C. This greatly - complicates this function, since we can no longer rely on the extra - processing given by function_type_required. */ - -static tree -handle_tm_attribute (tree *node, tree name, tree args, - int flags, bool *no_add_attrs) -{ - /* Only one path adds the attribute; others don't. */ - *no_add_attrs = true; - - switch (TREE_CODE (*node)) - { - case RECORD_TYPE: - case UNION_TYPE: - /* Only tm_callable and tm_safe apply to classes. */ - if (tm_attr_to_mask (name) & ~(TM_ATTR_SAFE | TM_ATTR_CALLABLE)) - goto ignored; - /* FALLTHRU */ - - case FUNCTION_TYPE: - case METHOD_TYPE: - { - tree old_name = find_tm_attribute (TYPE_ATTRIBUTES (*node)); - if (old_name == name) - ; - else if (old_name != NULL_TREE) - error ("type was previously declared %qE", old_name); - else - *no_add_attrs = false; - } - break; - - case FUNCTION_DECL: - { - /* transaction_safe_dynamic goes on the FUNCTION_DECL, but we also - want to set transaction_safe on the type. */ - gcc_assert (is_attribute_p ("transaction_safe_dynamic", name)); - if (!TYPE_P (DECL_CONTEXT (*node))) - error_at (DECL_SOURCE_LOCATION (*node), - "%<transaction_safe_dynamic%> may only be specified for " - "a virtual function"); - *no_add_attrs = false; - decl_attributes (&TREE_TYPE (*node), - build_tree_list (get_identifier ("transaction_safe"), - NULL_TREE), - 0); - break; - } - - case POINTER_TYPE: - { - enum tree_code subcode = TREE_CODE (TREE_TYPE (*node)); - if (subcode == FUNCTION_TYPE || subcode == METHOD_TYPE) - { - tree fn_tmp = TREE_TYPE (*node); - decl_attributes (&fn_tmp, tree_cons (name, args, NULL), 0); - *node = build_pointer_type (fn_tmp); - break; - } - } - /* FALLTHRU */ - - default: - /* If a function is next, pass it on to be tried next. */ - if (flags & (int) ATTR_FLAG_FUNCTION_NEXT) - return tree_cons (name, args, NULL); - - ignored: - warning (OPT_Wattributes, "%qE attribute ignored", name); - break; - } - - return NULL_TREE; -} - -/* Handle the TM_WRAP attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_tm_wrap_attribute (tree *node, tree name, tree args, - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - tree decl = *node; - - /* We don't need the attribute even on success, since we - record the entry in an external table. */ - *no_add_attrs = true; - - if (TREE_CODE (decl) != FUNCTION_DECL) - warning (OPT_Wattributes, "%qE attribute ignored", name); - else - { - tree wrap_decl = TREE_VALUE (args); - if (error_operand_p (wrap_decl)) - ; - else if (TREE_CODE (wrap_decl) != IDENTIFIER_NODE - && !VAR_OR_FUNCTION_DECL_P (wrap_decl)) - error ("%qE argument not an identifier", name); - else - { - if (TREE_CODE (wrap_decl) == IDENTIFIER_NODE) - wrap_decl = lookup_name (wrap_decl); - if (wrap_decl && TREE_CODE (wrap_decl) == FUNCTION_DECL) - { - if (lang_hooks.types_compatible_p (TREE_TYPE (decl), - TREE_TYPE (wrap_decl))) - record_tm_replacement (wrap_decl, decl); - else - error ("%qD is not compatible with %qD", wrap_decl, decl); - } - else - error ("%qE argument is not a function", name); - } - } - - return NULL_TREE; -} - -/* Ignore the given attribute. Used when this attribute may be usefully - overridden by the target, but is not used generically. */ - -static tree -ignore_attribute (tree * ARG_UNUSED (node), tree ARG_UNUSED (name), - tree ARG_UNUSED (args), int ARG_UNUSED (flags), - bool *no_add_attrs) -{ - *no_add_attrs = true; - return NULL_TREE; -} - -/* Handle a "no vops" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_novops_attribute (tree *node, tree ARG_UNUSED (name), - tree ARG_UNUSED (args), int ARG_UNUSED (flags), - bool *ARG_UNUSED (no_add_attrs)) -{ - gcc_assert (TREE_CODE (*node) == FUNCTION_DECL); - DECL_IS_NOVOPS (*node) = 1; - return NULL_TREE; -} - -/* Handle a "deprecated" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_deprecated_attribute (tree *node, tree name, - tree args, int flags, - bool *no_add_attrs) -{ - tree type = NULL_TREE; - int warn = 0; - tree what = NULL_TREE; - - if (!args) - *no_add_attrs = true; - else if (TREE_CODE (TREE_VALUE (args)) != STRING_CST) - { - error ("deprecated message is not a string"); - *no_add_attrs = true; - } - - if (DECL_P (*node)) - { - tree decl = *node; - type = TREE_TYPE (decl); - - if (TREE_CODE (decl) == TYPE_DECL - || TREE_CODE (decl) == PARM_DECL - || VAR_OR_FUNCTION_DECL_P (decl) - || TREE_CODE (decl) == FIELD_DECL - || TREE_CODE (decl) == CONST_DECL - || objc_method_decl (TREE_CODE (decl))) - TREE_DEPRECATED (decl) = 1; - else - warn = 1; - } - else if (TYPE_P (*node)) - { - if (!(flags & (int) ATTR_FLAG_TYPE_IN_PLACE)) - *node = build_variant_type_copy (*node); - TREE_DEPRECATED (*node) = 1; - type = *node; - } - else - warn = 1; - - if (warn) - { - *no_add_attrs = true; - if (type && TYPE_NAME (type)) - { - if (TREE_CODE (TYPE_NAME (type)) == IDENTIFIER_NODE) - what = TYPE_NAME (*node); - else if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL - && DECL_NAME (TYPE_NAME (type))) - what = DECL_NAME (TYPE_NAME (type)); - } - if (what) - warning (OPT_Wattributes, "%qE attribute ignored for %qE", name, what); - else - warning (OPT_Wattributes, "%qE attribute ignored", name); - } - - return NULL_TREE; -} - -/* Handle a "vector_size" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_vector_size_attribute (tree *node, tree name, tree args, - int ARG_UNUSED (flags), - bool *no_add_attrs) -{ - unsigned HOST_WIDE_INT vecsize, nunits; - machine_mode orig_mode; - tree type = *node, new_type, size; - - *no_add_attrs = true; - - size = TREE_VALUE (args); - if (size && TREE_CODE (size) != IDENTIFIER_NODE - && TREE_CODE (size) != FUNCTION_DECL) - size = default_conversion (size); - - if (!tree_fits_uhwi_p (size)) - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - return NULL_TREE; - } - - /* Get the vector size (in bytes). */ - vecsize = tree_to_uhwi (size); - - /* We need to provide for vector pointers, vector arrays, and - functions returning vectors. For example: - - __attribute__((vector_size(16))) short *foo; - - In this case, the mode is SI, but the type being modified is - HI, so we need to look further. */ - - while (POINTER_TYPE_P (type) - || TREE_CODE (type) == FUNCTION_TYPE - || TREE_CODE (type) == METHOD_TYPE - || TREE_CODE (type) == ARRAY_TYPE - || TREE_CODE (type) == OFFSET_TYPE) - type = TREE_TYPE (type); - - /* Get the mode of the type being modified. */ - orig_mode = TYPE_MODE (type); - - if ((!INTEGRAL_TYPE_P (type) - && !SCALAR_FLOAT_TYPE_P (type) - && !FIXED_POINT_TYPE_P (type)) - || (!SCALAR_FLOAT_MODE_P (orig_mode) - && GET_MODE_CLASS (orig_mode) != MODE_INT - && !ALL_SCALAR_FIXED_POINT_MODE_P (orig_mode)) - || !tree_fits_uhwi_p (TYPE_SIZE_UNIT (type)) - || TREE_CODE (type) == BOOLEAN_TYPE) - { - error ("invalid vector type for attribute %qE", name); - return NULL_TREE; - } - - if (vecsize % tree_to_uhwi (TYPE_SIZE_UNIT (type))) - { - error ("vector size not an integral multiple of component size"); - return NULL; - } - - if (vecsize == 0) - { - error ("zero vector size"); - return NULL; - } - - /* Calculate how many units fit in the vector. */ - nunits = vecsize / tree_to_uhwi (TYPE_SIZE_UNIT (type)); - if (nunits & (nunits - 1)) - { - error ("number of components of the vector not a power of two"); - return NULL_TREE; - } - - new_type = build_vector_type (type, nunits); - - /* Build back pointers if needed. */ - *node = lang_hooks.types.reconstruct_complex_type (*node, new_type); - - return NULL_TREE; -} - -/* Handle the "nonnull" attribute. */ -static tree -handle_nonnull_attribute (tree *node, tree ARG_UNUSED (name), - tree args, int ARG_UNUSED (flags), - bool *no_add_attrs) -{ - tree type = *node; - unsigned HOST_WIDE_INT attr_arg_num; - - /* If no arguments are specified, all pointer arguments should be - non-null. Verify a full prototype is given so that the arguments - will have the correct types when we actually check them later. - Avoid diagnosing type-generic built-ins since those have no - prototype. */ - if (!args) - { - if (!prototype_p (type) - && (!TYPE_ATTRIBUTES (type) - || !lookup_attribute ("type generic", TYPE_ATTRIBUTES (type)))) - { - error ("nonnull attribute without arguments on a non-prototype"); - *no_add_attrs = true; - } - return NULL_TREE; - } - - /* Argument list specified. Verify that each argument number references - a pointer argument. */ - for (attr_arg_num = 1; args; attr_arg_num++, args = TREE_CHAIN (args)) - { - unsigned HOST_WIDE_INT arg_num = 0, ck_num; - - tree arg = TREE_VALUE (args); - if (arg && TREE_CODE (arg) != IDENTIFIER_NODE - && TREE_CODE (arg) != FUNCTION_DECL) - arg = default_conversion (arg); - - if (!get_nonnull_operand (arg, &arg_num)) - { - error ("nonnull argument has invalid operand number (argument %lu)", - (unsigned long) attr_arg_num); - *no_add_attrs = true; - return NULL_TREE; - } - - if (prototype_p (type)) - { - function_args_iterator iter; - tree argument; - - function_args_iter_init (&iter, type); - for (ck_num = 1; ; ck_num++, function_args_iter_next (&iter)) - { - argument = function_args_iter_cond (&iter); - if (argument == NULL_TREE || ck_num == arg_num) - break; - } - - if (!argument - || TREE_CODE (argument) == VOID_TYPE) - { - error ("nonnull argument with out-of-range operand number (argument %lu, operand %lu)", - (unsigned long) attr_arg_num, (unsigned long) arg_num); - *no_add_attrs = true; - return NULL_TREE; - } - - if (TREE_CODE (argument) != POINTER_TYPE) - { - error ("nonnull argument references non-pointer operand (argument %lu, operand %lu)", - (unsigned long) attr_arg_num, (unsigned long) arg_num); - *no_add_attrs = true; - return NULL_TREE; - } - } - } - - return NULL_TREE; -} - /* Check the argument list of a function call for null in argument slots that are marked as requiring a non-null pointer argument. The NARGS arguments are passed in the array ARGARRAY. */ @@ -8177,7 +5379,7 @@ check_nonnull_arg (void *ctx, tree param, unsigned HOST_WIDE_INT param_num) /* Helper for nonnull attribute handling; fetch the operand number from the attribute argument list. */ -static bool +bool get_nonnull_operand (tree arg_num_expr, unsigned HOST_WIDE_INT *valp) { /* Verify the arg number is a small constant. */ @@ -8190,211 +5392,6 @@ get_nonnull_operand (tree arg_num_expr, unsigned HOST_WIDE_INT *valp) return false; } -/* Handle a "nothrow" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_nothrow_attribute (tree *node, tree name, tree ARG_UNUSED (args), - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - if (TREE_CODE (*node) == FUNCTION_DECL) - TREE_NOTHROW (*node) = 1; - /* ??? TODO: Support types. */ - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "cleanup" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_cleanup_attribute (tree *node, tree name, tree args, - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - tree decl = *node; - tree cleanup_id, cleanup_decl; - - /* ??? Could perhaps support cleanups on TREE_STATIC, much like we do - for global destructors in C++. This requires infrastructure that - we don't have generically at the moment. It's also not a feature - we'd be missing too much, since we do have attribute constructor. */ - if (!VAR_P (decl) || TREE_STATIC (decl)) - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - return NULL_TREE; - } - - /* Verify that the argument is a function in scope. */ - /* ??? We could support pointers to functions here as well, if - that was considered desirable. */ - cleanup_id = TREE_VALUE (args); - if (TREE_CODE (cleanup_id) != IDENTIFIER_NODE) - { - error ("cleanup argument not an identifier"); - *no_add_attrs = true; - return NULL_TREE; - } - cleanup_decl = lookup_name (cleanup_id); - if (!cleanup_decl || TREE_CODE (cleanup_decl) != FUNCTION_DECL) - { - error ("cleanup argument not a function"); - *no_add_attrs = true; - return NULL_TREE; - } - - /* That the function has proper type is checked with the - eventual call to build_function_call. */ - - return NULL_TREE; -} - -/* Handle a "warn_unused_result" attribute. No special handling. */ - -static tree -handle_warn_unused_result_attribute (tree *node, tree name, - tree ARG_UNUSED (args), - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - /* Ignore the attribute for functions not returning any value. */ - if (VOID_TYPE_P (TREE_TYPE (*node))) - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "sentinel" attribute. */ - -static tree -handle_sentinel_attribute (tree *node, tree name, tree args, - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - if (!prototype_p (*node)) - { - warning (OPT_Wattributes, - "%qE attribute requires prototypes with named arguments", name); - *no_add_attrs = true; - } - else - { - if (!stdarg_p (*node)) - { - warning (OPT_Wattributes, - "%qE attribute only applies to variadic functions", name); - *no_add_attrs = true; - } - } - - if (args) - { - tree position = TREE_VALUE (args); - if (position && TREE_CODE (position) != IDENTIFIER_NODE - && TREE_CODE (position) != FUNCTION_DECL) - position = default_conversion (position); - - if (TREE_CODE (position) != INTEGER_CST - || !INTEGRAL_TYPE_P (TREE_TYPE (position))) - { - warning (OPT_Wattributes, - "requested position is not an integer constant"); - *no_add_attrs = true; - } - else - { - if (tree_int_cst_lt (position, integer_zero_node)) - { - warning (OPT_Wattributes, - "requested position is less than zero"); - *no_add_attrs = true; - } - } - } - - return NULL_TREE; -} - -/* Handle a "type_generic" attribute. */ - -static tree -handle_type_generic_attribute (tree *node, tree ARG_UNUSED (name), - tree ARG_UNUSED (args), int ARG_UNUSED (flags), - bool * ARG_UNUSED (no_add_attrs)) -{ - /* Ensure we have a function type. */ - gcc_assert (TREE_CODE (*node) == FUNCTION_TYPE); - - /* Ensure we have a variadic function. */ - gcc_assert (!prototype_p (*node) || stdarg_p (*node)); - - return NULL_TREE; -} - -/* Handle a "target" attribute. */ - -static tree -handle_target_attribute (tree *node, tree name, tree args, int flags, - bool *no_add_attrs) -{ - /* Ensure we have a function type. */ - if (TREE_CODE (*node) != FUNCTION_DECL) - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - else if (lookup_attribute ("target_clones", DECL_ATTRIBUTES (*node))) - { - warning (OPT_Wattributes, "%qE attribute ignored due to conflict " - "with %qs attribute", name, "target_clones"); - *no_add_attrs = true; - } - else if (! targetm.target_option.valid_attribute_p (*node, name, args, - flags)) - *no_add_attrs = true; - - return NULL_TREE; -} - -/* Handle a "target_clones" attribute. */ - -static tree -handle_target_clones_attribute (tree *node, tree name, tree ARG_UNUSED (args), - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - /* Ensure we have a function type. */ - if (TREE_CODE (*node) == FUNCTION_DECL) - { - if (lookup_attribute ("always_inline", DECL_ATTRIBUTES (*node))) - { - warning (OPT_Wattributes, "%qE attribute ignored due to conflict " - "with %qs attribute", name, "always_inline"); - *no_add_attrs = true; - } - else if (lookup_attribute ("target", DECL_ATTRIBUTES (*node))) - { - warning (OPT_Wattributes, "%qE attribute ignored due to conflict " - "with %qs attribute", name, "target"); - *no_add_attrs = true; - } - else - /* Do not inline functions with multiple clone targets. */ - DECL_UNINLINABLE (*node) = 1; - } - else - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - return NULL_TREE; -} - /* Arguments being collected for optimization. */ typedef const char *const_char_p; /* For DEF_VEC_P. */ static GTY(()) vec<const_char_p, va_gc> *optimize_args; @@ -8539,115 +5536,6 @@ parse_optimize_options (tree args, bool attr_p) return ret; } -/* For handling "optimize" attribute. arguments as in - struct attribute_spec.handler. */ - -static tree -handle_optimize_attribute (tree *node, tree name, tree args, - int ARG_UNUSED (flags), bool *no_add_attrs) -{ - /* Ensure we have a function type. */ - if (TREE_CODE (*node) != FUNCTION_DECL) - { - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - } - else - { - struct cl_optimization cur_opts; - tree old_opts = DECL_FUNCTION_SPECIFIC_OPTIMIZATION (*node); - - /* Save current options. */ - cl_optimization_save (&cur_opts, &global_options); - - /* If we previously had some optimization options, use them as the - default. */ - if (old_opts) - cl_optimization_restore (&global_options, - TREE_OPTIMIZATION (old_opts)); - - /* Parse options, and update the vector. */ - parse_optimize_options (args, true); - DECL_FUNCTION_SPECIFIC_OPTIMIZATION (*node) - = build_optimization_node (&global_options); - - /* Restore current options. */ - cl_optimization_restore (&global_options, &cur_opts); - } - - return NULL_TREE; -} - -/* Handle a "no_split_stack" attribute. */ - -static tree -handle_no_split_stack_attribute (tree *node, tree name, - tree ARG_UNUSED (args), - int ARG_UNUSED (flags), - bool *no_add_attrs) -{ - tree decl = *node; - - if (TREE_CODE (decl) != FUNCTION_DECL) - { - error_at (DECL_SOURCE_LOCATION (decl), - "%qE attribute applies only to functions", name); - *no_add_attrs = true; - } - else if (DECL_INITIAL (decl)) - { - error_at (DECL_SOURCE_LOCATION (decl), - "can%'t set %qE attribute after definition", name); - *no_add_attrs = true; - } - - return NULL_TREE; -} - -/* Handle a "returns_nonnull" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_returns_nonnull_attribute (tree *node, tree, tree, int, - bool *no_add_attrs) -{ - // Even without a prototype we still have a return type we can check. - if (TREE_CODE (TREE_TYPE (*node)) != POINTER_TYPE) - { - error ("returns_nonnull attribute on a function not returning a pointer"); - *no_add_attrs = true; - } - return NULL_TREE; -} - -/* Handle a "designated_init" attribute; arguments as in - struct attribute_spec.handler. */ - -static tree -handle_designated_init_attribute (tree *node, tree name, tree, int, - bool *no_add_attrs) -{ - if (TREE_CODE (*node) != RECORD_TYPE) - { - error ("%qE attribute is only valid on %<struct%> type", name); - *no_add_attrs = true; - } - return NULL_TREE; -} - - -/* Handle a "fallthrough" attribute; arguments as in struct - attribute_spec.handler. */ - -static tree -handle_fallthrough_attribute (tree *, tree name, tree, int, - bool *no_add_attrs) -{ - warning (OPT_Wattributes, "%qE attribute ignored", name); - *no_add_attrs = true; - return NULL_TREE; -} - /* Check whether ATTR is a valid attribute fallthrough. */ bool |