1 /* Some code common to C and ObjC front ends.
2 Copyright (C) 2001, 2002, 2003, 2004, 2005, 2007 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 3, 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 COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
22 #include "coretypes.h"
26 #include "insn-config.h"
27 #include "integrate.h"
29 #include "c-pretty-print.h"
33 #include "diagnostic.h"
34 #include "tree-inline.h"
37 #include "langhooks.h"
38 #include "tree-mudflap.h"
40 #include "c-objc-common.h"
42 static bool c_tree_printer (pretty_printer *, text_info *, const char *,
43 int, bool, bool, bool);
46 c_missing_noreturn_ok_p (tree decl)
48 /* A missing noreturn is not ok for freestanding implementations and
49 ok for the `main' function in hosted implementations. */
50 return flag_hosted && MAIN_NAME_P (DECL_ASSEMBLER_NAME (decl));
53 /* We want to inline `extern inline' functions even if this would
54 violate inlining limits. Some glibc and linux constructs depend on
55 such functions always being inlined when optimizing. */
58 c_disregard_inline_limits (tree fn)
60 if (lookup_attribute ("always_inline", DECL_ATTRIBUTES (fn)) != NULL)
63 return (!flag_really_no_inline && DECL_DECLARED_INLINE_P (fn)
64 && DECL_EXTERNAL (fn));
68 c_cannot_inline_tree_fn (tree *fnp)
71 bool do_warning = (warn_inline
73 && DECL_DECLARED_INLINE_P (fn)
74 && !DECL_IN_SYSTEM_HEADER (fn));
75 tree always_inline = lookup_attribute ("always_inline", DECL_ATTRIBUTES (fn));
77 if (flag_really_no_inline && always_inline == NULL)
80 warning (OPT_Winline, "function %q+F can never be inlined because it "
81 "is suppressed using -fno-inline", fn);
85 /* Don't auto-inline anything that might not be bound within
86 this unit of translation. */
87 if (always_inline == NULL
88 && !DECL_DECLARED_INLINE_P (fn)
89 && !targetm.binds_local_p (fn))
92 warning (OPT_Winline, "function %q+F can never be inlined because it "
93 "might not be bound within this unit of translation", fn);
97 if (!function_attribute_inlinable_p (fn))
100 warning (OPT_Winline, "function %q+F can never be inlined because it "
101 "uses attributes conflicting with inlining", fn);
108 DECL_UNINLINABLE (fn) = 1;
112 /* Called from check_global_declarations. */
115 c_warn_unused_global_decl (tree decl)
117 if (TREE_CODE (decl) == FUNCTION_DECL && DECL_DECLARED_INLINE_P (decl))
119 if (DECL_IN_SYSTEM_HEADER (decl))
125 /* Initialization common to C and Objective-C front ends. */
127 c_objc_common_init (void)
129 c_init_decl_processing ();
131 if (c_common_init () == false)
134 /* These were not defined in the Objective-C front end, but I'm
135 putting them here anyway. The diagnostic format decoder might
136 want an enhanced ObjC implementation. */
137 diagnostic_format_decoder (global_dc) = &c_tree_printer;
142 /* Called during diagnostic message formatting process to print a
143 source-level entity onto BUFFER. The meaning of the format specifiers
146 %E: an identifier or expression,
147 %F: a function declaration,
150 These format specifiers form a subset of the format specifiers set used
151 by the C++ front-end.
152 Please notice when called, the `%' part was already skipped by the
153 diagnostic machinery. */
155 c_tree_printer (pretty_printer *pp, text_info *text, const char *spec,
156 int precision, bool wide, bool set_locus, bool hash)
158 tree t = va_arg (*text->args_ptr, tree);
160 const char *n = "({anonymous})";
161 c_pretty_printer *cpp = (c_pretty_printer *) pp;
162 pp->padding = pp_none;
164 if (precision != 0 || wide || hash)
167 if (set_locus && text->locus)
168 *text->locus = DECL_SOURCE_LOCATION (t);
173 if (DECL_DEBUG_EXPR_IS_FROM (t) && DECL_DEBUG_EXPR (t))
175 t = DECL_DEBUG_EXPR (t);
178 pp_c_expression (cpp, t);
186 n = lang_hooks.decl_printable_name (t, 2);
190 gcc_assert (TYPE_P (t));
191 name = TYPE_NAME (t);
193 if (name && TREE_CODE (name) == TYPE_DECL)
195 if (DECL_NAME (name))
196 pp_string (cpp, lang_hooks.decl_printable_name (name, 2));
209 if (TREE_CODE (t) == IDENTIFIER_NODE)
210 n = IDENTIFIER_POINTER (t);
213 pp_expression (cpp, t);
226 /* In C and ObjC, all decls have "C" linkage. */
228 has_c_linkage (tree decl ATTRIBUTE_UNUSED)
234 c_initialize_diagnostics (diagnostic_context *context)
236 pretty_printer *base = context->printer;
237 c_pretty_printer *pp = XNEW (c_pretty_printer);
238 memcpy (pp_base (pp), base, sizeof (pretty_printer));
239 pp_c_pretty_printer_init (pp);
240 context->printer = (pretty_printer *) pp;
242 /* It is safe to free this object because it was previously XNEW()'d. */
247 c_types_compatible_p (tree x, tree y)
249 return comptypes (TYPE_MAIN_VARIANT (x), TYPE_MAIN_VARIANT (y));
252 /* Determine if the type is a vla type for the backend. */
255 c_vla_unspec_p (tree x, tree fn ATTRIBUTE_UNUSED)
257 return c_vla_type_p (x);