gcc/toplev.h

   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.
   5
   6 This file is part of GCC.
   7
   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.
  12
  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.
  17
  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/>.  */
  21
  22 #ifndef GCC_TOPLEV_H
  23 #define GCC_TOPLEV_H
  24 #include "input.h"
  25 #include "bversion.h"
  26 #include "diagnostic-core.h"
  27
  28 /* If non-NULL, return one past-the-end of the matching SUBPART of
  29    the WHOLE string.  */
  30 #define skip_leading_substring(whole,  part) \
  31    (strncmp (whole, part, strlen (part)) ? NULL : whole + strlen (part))
  32
  33 extern int toplev_main (int, char **);
  34 extern void strip_off_ending (char *, int);
  35 extern void rest_of_decl_compilation (tree, int, int);
  36 extern void rest_of_type_compilation (tree, int);
  37 extern void tree_rest_of_compilation (tree);
  38 extern void init_optimization_passes (void);
  39 extern void finish_optimization_passes (void);
  40 extern bool enable_rtl_dump_file (void);
  41
  42 /* In except.c.  Initialize exception handling.  This is used by the Ada
  43    and LTO front ends to initialize EH "on demand".  See lto-streamer-in.c
  44    and ada/gcc-interface/misc.c.  */
  45 extern void init_eh (void);
  46
  47 extern void announce_function (tree);
  48
  49 extern void warn_deprecated_use (tree, tree);
  50 extern bool parse_optimize_options (tree, bool);
  51
  52 #ifdef BUFSIZ
  53 extern void output_quoted_string        (FILE *, const char *);
  54 extern void output_file_directive       (FILE *, const char *);
  55 #endif
  56
  57 extern void wrapup_global_declaration_1 (tree);
  58 extern bool wrapup_global_declaration_2 (tree);
  59 extern bool wrapup_global_declarations (tree *, int);
  60 extern void check_global_declaration_1 (tree);
  61 extern void check_global_declarations (tree *, int);
  62 extern void emit_debug_global_declarations (tree *, int);
  63 extern void write_global_declarations (void);
  64
  65 extern void dump_memory_report (bool);
  66
  67 extern void target_reinit (void);
  68
  69 /* A unique local time stamp, might be zero if none is available.  */
  70 extern unsigned local_tick;
  71
  72 /* Top-level source file.  */
  73 extern const char *main_input_filename;
  74
  75 extern const char *dump_base_name;
  76 extern const char *dump_dir_name;
  77 extern const char *aux_base_name;
  78 extern const char *aux_info_file_name;
  79 extern const char *profile_data_prefix;
  80 extern const char *asm_file_name;
  81 extern bool exit_after_options;
  82
  83 /* True if the user has tagged the function with the 'section'
  84    attribute.  */
  85
  86 extern bool user_defined_section_attribute;
  87
  88 /* See toplev.c.  */
  89 extern int flag_rerun_cse_after_global_opts;
  90
  91 /* Things to do with target switches.  */
  92 extern void print_version (FILE *, const char *);
  93 extern void * default_get_pch_validity (size_t *);
  94 extern const char * default_pch_valid_p (const void *, size_t);
  95
  96 /* The hashtable, so that the C front ends can pass it to cpplib.  */
  97 extern struct ht *ident_hash;
  98
  99 /* This function can be used by targets to set the flags originally
 100     implied by -ffast-math and -fno-fast-math.  */
 101
 102 extern void set_fast_math_flags         (int);
 103
 104 extern void set_unsafe_math_optimizations_flags (int);
 105
 106 /* Handle -d switch.  */
 107 extern void decode_d_option             (const char *);
 108
 109 /* Return true iff flags are set as if -ffast-math.  */
 110 extern bool fast_math_flags_set_p       (void);
 111 extern bool fast_math_flags_struct_set_p (struct cl_optimization *);
 112
 113 /* Inline versions of the above for speed.  */
 114 #if GCC_VERSION < 3004
 115
 116 /* Return log2, or -1 if not exact.  */
 117 extern int exact_log2                  (unsigned HOST_WIDE_INT);
 118
 119 /* Return floor of log2, with -1 for zero.  */
 120 extern int floor_log2                  (unsigned HOST_WIDE_INT);
 121
 122 #else /* GCC_VERSION >= 3004 */
 123
 124 # if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
 125 #  define CLZ_HWI __builtin_clzl
 126 #  define CTZ_HWI __builtin_ctzl
 127 # elif HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONGLONG
 128 #  define CLZ_HWI __builtin_clzll
 129 #  define CTZ_HWI __builtin_ctzll
 130 # else
 131 #  define CLZ_HWI __builtin_clz
 132 #  define CTZ_HWI __builtin_ctz
 133 # endif
 134
 135 static inline int
 136 floor_log2 (unsigned HOST_WIDE_INT x)
 137 {
 138   return x ? HOST_BITS_PER_WIDE_INT - 1 - (int) CLZ_HWI (x) : -1;
 139 }
 140
 141 static inline int
 142 exact_log2 (unsigned HOST_WIDE_INT x)
 143 {
 144   return x == (x & -x) && x ? (int) CTZ_HWI (x) : -1;
 145 }
 146
 147 #endif /* GCC_VERSION >= 3004 */
 148
 149 /* Functions used to get and set GCC's notion of in what directory
 150    compilation was started.  */
 151
 152 extern const char *get_src_pwd         (void);
 153 extern bool set_src_pwd                (const char *);
 154
 155 /* Functions used to manipulate the random seed.  */
 156
 157 extern const char *get_random_seed (bool);
 158 extern const char *set_random_seed (const char *);
 159
 160 #endif /* ! GCC_TOPLEV_H */