PR target/35491
[official-gcc/alias-decl.git] / gcc / toplev.h
blob44920ed7a009d3c6e5f49bafc292421652c6b2fb
1 /* toplev.h - Various declarations for functions found in toplev.c
2 Copyright (C) 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006, 2007,
3 2008, 2009, 2010
4 Free Software Foundation, Inc.
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
11 version.
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 for more details.
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
22 #ifndef GCC_TOPLEV_H
23 #define GCC_TOPLEV_H
24 #include "input.h"
25 #include "bversion.h"
27 /* If non-NULL, return one past-the-end of the matching SUBPART of
28 the WHOLE string. */
29 #define skip_leading_substring(whole, part) \
30 (strncmp (whole, part, strlen (part)) ? NULL : whole + strlen (part))
32 extern int toplev_main (int, char **);
33 extern void strip_off_ending (char *, int);
34 extern void rest_of_decl_compilation (tree, int, int);
35 extern void rest_of_type_compilation (tree, int);
36 extern void tree_rest_of_compilation (tree);
37 extern void init_optimization_passes (void);
38 extern void finish_optimization_passes (void);
39 extern bool enable_rtl_dump_file (void);
41 /* In except.c. Initialize exception handling. This is used by the Ada
42 and LTO front ends to initialize EH "on demand". See lto-streamer-in.c
43 and ada/gcc-interface/misc.c. */
44 extern void init_eh (void);
46 extern void announce_function (tree);
48 extern void warn_deprecated_use (tree, tree);
49 extern bool parse_optimize_options (tree, bool);
51 #ifdef BUFSIZ
52 extern void output_quoted_string (FILE *, const char *);
53 #endif
55 extern void wrapup_global_declaration_1 (tree);
56 extern bool wrapup_global_declaration_2 (tree);
57 extern bool wrapup_global_declarations (tree *, int);
58 extern void check_global_declaration_1 (tree);
59 extern void check_global_declarations (tree *, int);
60 extern void emit_debug_global_declarations (tree *, int);
61 extern void write_global_declarations (void);
63 extern void dump_memory_report (bool);
65 extern void target_reinit (void);
67 /* A unique local time stamp, might be zero if none is available. */
68 extern unsigned local_tick;
70 /* Top-level source file. */
71 extern const char *main_input_filename;
73 extern const char *dump_base_name;
74 extern const char *dump_dir_name;
75 extern const char *aux_base_name;
76 extern const char *aux_info_file_name;
77 extern const char *profile_data_prefix;
78 extern const char *asm_file_name;
79 extern bool exit_after_options;
81 /* True if the user has tagged the function with the 'section'
82 attribute. */
84 extern bool user_defined_section_attribute;
86 /* See toplev.c. */
87 extern int flag_rerun_cse_after_global_opts;
89 /* Things to do with target switches. */
90 extern void print_version (FILE *, const char *);
91 extern void * default_get_pch_validity (size_t *);
92 extern const char * default_pch_valid_p (const void *, size_t);
94 /* The hashtable, so that the C front ends can pass it to cpplib. */
95 extern struct ht *ident_hash;
97 /* This function can be used by targets to set the flags originally
98 implied by -ffast-math and -fno-fast-math. */
100 extern void set_fast_math_flags (int);
102 extern void set_unsafe_math_optimizations_flags (int);
104 /* Handle -d switch. */
105 extern void decode_d_option (const char *);
107 /* Return true iff flags are set as if -ffast-math. */
108 extern bool fast_math_flags_set_p (void);
109 extern bool fast_math_flags_struct_set_p (struct cl_optimization *);
111 /* Inline versions of the above for speed. */
112 #if GCC_VERSION < 3004
114 /* Return log2, or -1 if not exact. */
115 extern int exact_log2 (unsigned HOST_WIDE_INT);
117 /* Return floor of log2, with -1 for zero. */
118 extern int floor_log2 (unsigned HOST_WIDE_INT);
120 #else /* GCC_VERSION >= 3004 */
122 # if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
123 # define CLZ_HWI __builtin_clzl
124 # define CTZ_HWI __builtin_ctzl
125 # elif HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONGLONG
126 # define CLZ_HWI __builtin_clzll
127 # define CTZ_HWI __builtin_ctzll
128 # else
129 # define CLZ_HWI __builtin_clz
130 # define CTZ_HWI __builtin_ctz
131 # endif
133 static inline int
134 floor_log2 (unsigned HOST_WIDE_INT x)
136 return x ? HOST_BITS_PER_WIDE_INT - 1 - (int) CLZ_HWI (x) : -1;
139 static inline int
140 exact_log2 (unsigned HOST_WIDE_INT x)
142 return x == (x & -x) && x ? (int) CTZ_HWI (x) : -1;
145 #endif /* GCC_VERSION >= 3004 */
147 /* Functions used to get and set GCC's notion of in what directory
148 compilation was started. */
150 extern const char *get_src_pwd (void);
151 extern bool set_src_pwd (const char *);
153 /* Functions used to manipulate the random seed. */
155 extern const char *get_random_seed (bool);
156 extern const char *set_random_seed (const char *);
158 #endif /* ! GCC_TOPLEV_H */