1 /* Some code common to C and ObjC front ends.
2 Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify it under
7 the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 2, or (at your option) any later
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING. If not, write to the Free
18 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
23 #include "coretypes.h"
27 #include "insn-config.h"
28 #include "integrate.h"
34 #include "diagnostic.h"
35 #include "tree-inline.h"
38 #include "langhooks.h"
42 static bool c_tree_printer (pretty_printer
*, text_info
*);
43 static tree
start_cdtor (int);
44 static void finish_cdtor (tree
);
47 c_missing_noreturn_ok_p (tree decl
)
49 /* A missing noreturn is not ok for freestanding implementations and
50 ok for the `main' function in hosted implementations. */
51 return flag_hosted
&& MAIN_NAME_P (DECL_ASSEMBLER_NAME (decl
));
54 /* We want to inline `extern inline' functions even if this would
55 violate inlining limits. Some glibc and linux constructs depend on
56 such functions always being inlined when optimizing. */
59 c_disregard_inline_limits (tree fn
)
61 if (lookup_attribute ("always_inline", DECL_ATTRIBUTES (fn
)) != NULL
)
64 return (!flag_really_no_inline
&& DECL_DECLARED_INLINE_P (fn
)
65 && DECL_EXTERNAL (fn
));
69 c_cannot_inline_tree_fn (tree
*fnp
)
73 bool do_warning
= (warn_inline
75 && DECL_DECLARED_INLINE_P (fn
)
76 && !DECL_IN_SYSTEM_HEADER (fn
));
78 if (flag_really_no_inline
79 && lookup_attribute ("always_inline", DECL_ATTRIBUTES (fn
)) == NULL
)
82 warning ("%Jfunction '%F' can never be inlined because it "
83 "is suppressed using -fno-inline", fn
, fn
);
87 /* Don't auto-inline anything that might not be bound within
88 this unit of translation. */
89 if (!DECL_DECLARED_INLINE_P (fn
) && !targetm
.binds_local_p (fn
))
92 warning ("%Jfunction '%F' can never be inlined because it might not "
93 "be bound within this unit of translation", fn
, fn
);
97 if (! function_attribute_inlinable_p (fn
))
100 warning ("%Jfunction '%F' can never be inlined because it uses "
101 "attributes conflicting with inlining", fn
, fn
);
105 /* If a function has pending sizes, we must not defer its
106 compilation, and we can't inline it as a tree. */
107 if (fn
== current_function_decl
)
109 t
= get_pending_sizes ();
110 put_pending_sizes (t
);
115 warning ("%Jfunction '%F' can never be inlined because it has "
116 "pending sizes", fn
, fn
);
121 if (! DECL_FILE_SCOPE_P (fn
))
123 /* If a nested function has pending sizes, we may have already
125 if (DECL_LANG_SPECIFIC (fn
)->pending_sizes
)
128 warning ("%Jnested function '%F' can never be inlined because it "
129 "has possibly saved pending sizes", fn
, fn
);
137 DECL_UNINLINABLE (fn
) = 1;
141 /* Called from check_global_declarations. */
144 c_warn_unused_global_decl (tree decl
)
146 if (TREE_CODE (decl
) == FUNCTION_DECL
&& DECL_DECLARED_INLINE_P (decl
))
148 if (DECL_IN_SYSTEM_HEADER (decl
))
154 /* Initialization common to C and Objective-C front ends. */
156 c_objc_common_init (void)
158 static const enum tree_code stmt_codes
[] = {
162 INIT_STATEMENT_CODES (stmt_codes
);
164 c_init_decl_processing ();
166 if (c_common_init () == false)
169 lang_expand_decl_stmt
= c_expand_decl_stmt
;
171 /* These were not defined in the Objective-C front end, but I'm
172 putting them here anyway. The diagnostic format decoder might
173 want an enhanced ObjC implementation. */
174 diagnostic_format_decoder (global_dc
) = &c_tree_printer
;
175 lang_missing_noreturn_ok_p
= &c_missing_noreturn_ok_p
;
177 /* If still unspecified, make it match -std=c99
178 (allowing for -pedantic-errors). */
179 if (mesg_implicit_function_declaration
< 0)
182 mesg_implicit_function_declaration
= flag_pedantic_errors
? 2 : 1;
184 mesg_implicit_function_declaration
= 0;
191 start_cdtor (int method_type
)
193 tree fnname
= get_file_function_name (method_type
);
194 tree void_list_node_1
= build_tree_list (NULL_TREE
, void_type_node
);
197 start_function (void_list_node_1
,
198 build_nt (CALL_EXPR
, fnname
,
199 tree_cons (NULL_TREE
, NULL_TREE
, void_list_node_1
),
204 current_function_cannot_inline
205 = "static constructors and destructors cannot be inlined";
207 body
= c_begin_compound_stmt ();
211 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
217 finish_cdtor (tree body
)
222 scope
= add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
223 block
= pop_scope ();
224 SCOPE_STMT_BLOCK (TREE_PURPOSE (scope
)) = block
;
225 SCOPE_STMT_BLOCK (TREE_VALUE (scope
)) = block
;
227 RECHAIN_STMTS (body
, COMPOUND_BODY (body
));
232 /* Called at end of parsing, but before end-of-file processing. */
235 c_objc_common_finish_file (void)
238 c_common_write_pch ();
240 cgraph_finalize_compilation_unit ();
245 tree body
= start_cdtor ('I');
247 for (; static_ctors
; static_ctors
= TREE_CHAIN (static_ctors
))
248 c_expand_expr_stmt (build_function_call (TREE_VALUE (static_ctors
),
256 tree body
= start_cdtor ('D');
258 for (; static_dtors
; static_dtors
= TREE_CHAIN (static_dtors
))
259 c_expand_expr_stmt (build_function_call (TREE_VALUE (static_dtors
),
266 /* Called during diagnostic message formatting process to print a
267 source-level entity onto BUFFER. The meaning of the format specifiers
271 %F: a function declaration,
274 These format specifiers form a subset of the format specifiers set used
275 by the C++ front-end.
276 Please notice when called, the `%' part was already skipped by the
277 diagnostic machinery. */
279 c_tree_printer (pretty_printer
*pp
, text_info
*text
)
281 tree t
= va_arg (*text
->args_ptr
, tree
);
282 const char *n
= "({anonymous})";
284 switch (*text
->format_spec
)
289 n
= lang_hooks
.decl_printable_name (t
, 2);
293 if (TREE_CODE (t
) == TYPE_DECL
)
296 n
= lang_hooks
.decl_printable_name (t
, 2);
302 n
= IDENTIFIER_POINTER (t
);
307 if (TREE_CODE (t
) == IDENTIFIER_NODE
)
308 n
= IDENTIFIER_POINTER (t
);
322 c_objc_common_truthvalue_conversion (tree expr
)
325 switch (TREE_CODE (TREE_TYPE (expr
)))
328 expr
= default_conversion (expr
);
329 if (TREE_CODE (TREE_TYPE (expr
)) != ARRAY_TYPE
)
332 error ("used array that cannot be converted to pointer where scalar is required");
333 return error_mark_node
;
336 error ("used struct type value where scalar is required");
337 return error_mark_node
;
340 error ("used union type value where scalar is required");
341 return error_mark_node
;
346 return c_common_truthvalue_conversion (expr
);