diff options
Diffstat (limited to 'gcc/c-common.c')
| -rw-r--r-- | gcc/c-common.c | 106 |
1 files changed, 39 insertions, 67 deletions
diff --git a/gcc/c-common.c b/gcc/c-common.c index 4438abe..57c191a 100644 --- a/gcc/c-common.c +++ b/gcc/c-common.c @@ -2456,7 +2456,7 @@ c_common_truthvalue_conversion (expr) static tree builtin_function_2 PARAMS ((const char *, const char *, tree, tree, int, enum built_in_class, int, int, - int)); + tree)); /* Make a variant type in the proper way for C/C++, propagating qualifiers down to the element type of an array. */ @@ -2681,6 +2681,30 @@ c_alignof_expr (expr) return fold (build1 (NOP_EXPR, c_size_type_node, t)); } +/* Handle C and C++ default attributes. */ + +enum built_in_attribute +{ +#define DEF_ATTR_NULL_TREE(ENUM) ENUM, +#define DEF_ATTR_INT(ENUM, VALUE) ENUM, +#define DEF_ATTR_IDENT(ENUM, STRING) ENUM, +#define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN) ENUM, +#define DEF_FN_ATTR(NAME, ATTRS, PREDICATE) /* No entry needed in enum. */ +#include "builtin-attrs.def" +#undef DEF_ATTR_NULL_TREE +#undef DEF_ATTR_INT +#undef DEF_ATTR_IDENT +#undef DEF_ATTR_TREE_LIST +#undef DEF_FN_ATTR + ATTR_LAST +}; + +static GTY(()) tree built_in_attributes[(int) ATTR_LAST]; + +static bool c_attrs_initialized = false; + +static void c_init_attributes PARAMS ((void)); + /* Build tree nodes and builtin functions common to both C and C++ language frontends. */ @@ -3041,8 +3065,11 @@ c_common_nodes_and_builtins () #undef DEF_FUNCTION_TYPE_VAR_1 #undef DEF_POINTER_TYPE -#define DEF_BUILTIN(ENUM, NAME, CLASS, \ - TYPE, LIBTYPE, BOTH_P, FALLBACK_P, NONANSI_P) \ + if (!c_attrs_initialized) + c_init_attributes (); + +#define DEF_BUILTIN(ENUM, NAME, CLASS, TYPE, LIBTYPE, \ + BOTH_P, FALLBACK_P, NONANSI_P, ATTRS) \ if (NAME) \ { \ tree decl; \ @@ -3055,7 +3082,8 @@ c_common_nodes_and_builtins () CLASS, \ (FALLBACK_P \ ? (NAME + strlen ("__builtin_")) \ - : NULL), NULL_TREE); \ + : NULL), \ + built_in_attributes[(int) ATTRS]); \ else \ decl = builtin_function_2 (NAME, \ NAME + strlen ("__builtin_"), \ @@ -3065,35 +3093,13 @@ c_common_nodes_and_builtins () CLASS, \ FALLBACK_P, \ NONANSI_P, \ - /*noreturn_p=*/0); \ + built_in_attributes[(int) ATTRS]); \ \ built_in_decls[(int) ENUM] = decl; \ } #include "builtins.def" #undef DEF_BUILTIN - /* Declare _exit and _Exit just to mark them as non-returning. */ - builtin_function_2 (NULL, "_exit", NULL_TREE, - builtin_types[BT_FN_VOID_INT], - 0, NOT_BUILT_IN, 0, 1, 1); - builtin_function_2 (NULL, "_Exit", NULL_TREE, - builtin_types[BT_FN_VOID_INT], - 0, NOT_BUILT_IN, 0, !flag_isoc99, 1); - - /* Declare these functions non-returning - to avoid spurious "control drops through" warnings. */ - builtin_function_2 (NULL, "abort", - NULL_TREE, ((c_language == clk_cplusplus) - ? builtin_types[BT_FN_VOID] - : builtin_types[BT_FN_VOID_VAR]), - 0, NOT_BUILT_IN, 0, 0, 1); - - builtin_function_2 (NULL, "exit", - NULL_TREE, ((c_language == clk_cplusplus) - ? builtin_types[BT_FN_VOID_INT] - : builtin_types[BT_FN_VOID_VAR]), - 0, NOT_BUILT_IN, 0, 0, 1); - main_identifier_node = get_identifier ("main"); } @@ -3161,15 +3167,15 @@ builtin_function_disabled_p (name) conflicts with headers. FUNCTION_CODE and CLASS are as for builtin_function. If LIBRARY_NAME_P is nonzero, NAME is passed as the LIBRARY_NAME parameter to builtin_function when declaring BUILTIN_NAME. - If NONANSI_P is nonzero, the name NAME is treated as a non-ANSI name; if - NORETURN_P is nonzero, the function is marked as non-returning. + If NONANSI_P is nonzero, the name NAME is treated as a non-ANSI name; + ATTRS is the tree list representing the builtin's function attributes. Returns the declaration of BUILTIN_NAME, if any, otherwise the declaration of NAME. Does not declare NAME if flag_no_builtin, or if NONANSI_P and flag_no_nonansi_builtin. */ static tree builtin_function_2 (builtin_name, name, builtin_type, type, function_code, - class, library_name_p, nonansi_p, noreturn_p) + class, library_name_p, nonansi_p, attrs) const char *builtin_name; const char *name; tree builtin_type; @@ -3178,7 +3184,7 @@ builtin_function_2 (builtin_name, name, builtin_type, type, function_code, enum built_in_class class; int library_name_p; int nonansi_p; - int noreturn_p; + tree attrs; { tree bdecl = NULL_TREE; tree decl = NULL_TREE; @@ -3186,25 +3192,15 @@ builtin_function_2 (builtin_name, name, builtin_type, type, function_code, { bdecl = builtin_function (builtin_name, builtin_type, function_code, class, library_name_p ? name : NULL, - NULL_TREE); - if (noreturn_p) - { - TREE_THIS_VOLATILE (bdecl) = 1; - TREE_SIDE_EFFECTS (bdecl) = 1; - } + attrs); } if (name != 0 && !flag_no_builtin && !builtin_function_disabled_p (name) && !(nonansi_p && flag_no_nonansi_builtin)) { decl = builtin_function (name, type, function_code, class, NULL, - NULL_TREE); + attrs); if (nonansi_p) DECL_BUILT_IN_NONANSI (decl) = 1; - if (noreturn_p) - { - TREE_THIS_VOLATILE (decl) = 1; - TREE_SIDE_EFFECTS (decl) = 1; - } } return (bdecl != 0 ? bdecl : decl); } @@ -4232,30 +4228,6 @@ boolean_increment (code, arg) return val; } -/* Handle C and C++ default attributes. */ - -enum built_in_attribute -{ -#define DEF_ATTR_NULL_TREE(ENUM) ENUM, -#define DEF_ATTR_INT(ENUM, VALUE) ENUM, -#define DEF_ATTR_IDENT(ENUM, STRING) ENUM, -#define DEF_ATTR_TREE_LIST(ENUM, PURPOSE, VALUE, CHAIN) ENUM, -#define DEF_FN_ATTR(NAME, ATTRS, PREDICATE) /* No entry needed in enum. */ -#include "builtin-attrs.def" -#undef DEF_ATTR_NULL_TREE -#undef DEF_ATTR_INT -#undef DEF_ATTR_IDENT -#undef DEF_ATTR_TREE_LIST -#undef DEF_FN_ATTR - ATTR_LAST -}; - -static GTY(()) tree built_in_attributes[(int) ATTR_LAST]; - -static bool c_attrs_initialized = false; - -static void c_init_attributes PARAMS ((void)); - /* Common initialization before parsing options. */ void c_common_init_options (lang) |