gcc/flags.h

   1 /* Compilation switch flag definitions for GCC.
   2    Copyright (C) 1987-2017 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   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
   9 version.
  10
  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
  14 for more details.
  15
  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/>.  */
  19
  20 #ifndef GCC_FLAGS_H
  21 #define GCC_FLAGS_H
  22
  23 #if !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS) && !defined(IN_RTS)
  24
  25 /* Names of debug_info_type, for error messages.  */
  26 extern const char *const debug_type_names[];
  27
  28 extern void strip_off_ending (char *, int);
  29 extern int base_of_path (const char *path, const char **base_out);
  30
  31 /* Return true iff flags are set as if -ffast-math.  */
  32 extern bool fast_math_flags_set_p (const struct gcc_options *);
  33 extern bool fast_math_flags_struct_set_p (struct cl_optimization *);
  34
  35 \f
  36 /* Now the symbols that are set with `-f' switches.  */
  37
  38 /* True if printing into -fdump-final-insns= dump.  */
  39
  40 extern bool final_insns_dump_p;
  41
  42 \f
  43 /* Other basic status info about current function.  */
  44
  45 /* Target-dependent global state.  */
  46 struct target_flag_state {
  47   /* Values of the -falign-* flags: how much to align labels in code.
  48      0 means `use default', 1 means `don't align'.
  49      For each variable, there is an _log variant which is the power
  50      of two not less than the variable, for .align output.  */
  51   int x_align_loops_log;
  52   int x_align_loops_max_skip;
  53   int x_align_jumps_log;
  54   int x_align_jumps_max_skip;
  55   int x_align_labels_log;
  56   int x_align_labels_max_skip;
  57   int x_align_functions_log;
  58
  59   /* The excess precision currently in effect.  */
  60   enum excess_precision x_flag_excess_precision;
  61 };
  62
  63 extern struct target_flag_state default_target_flag_state;
  64 #if SWITCHABLE_TARGET
  65 extern struct target_flag_state *this_target_flag_state;
  66 #else
  67 #define this_target_flag_state (&default_target_flag_state)
  68 #endif
  69
  70 #define align_loops_log \
  71   (this_target_flag_state->x_align_loops_log)
  72 #define align_loops_max_skip \
  73   (this_target_flag_state->x_align_loops_max_skip)
  74 #define align_jumps_log \
  75   (this_target_flag_state->x_align_jumps_log)
  76 #define align_jumps_max_skip \
  77   (this_target_flag_state->x_align_jumps_max_skip)
  78 #define align_labels_log \
  79   (this_target_flag_state->x_align_labels_log)
  80 #define align_labels_max_skip \
  81   (this_target_flag_state->x_align_labels_max_skip)
  82 #define align_functions_log \
  83   (this_target_flag_state->x_align_functions_log)
  84 #define flag_excess_precision \
  85   (this_target_flag_state->x_flag_excess_precision)
  86
  87 /* Returns TRUE if generated code should match ABI version N or
  88    greater is in use.  */
  89
  90 #define abi_version_at_least(N) \
  91   (flag_abi_version == 0 || flag_abi_version >= (N))
  92
  93 /* Whether to emit an overflow warning whose code is C.  */
  94 #define issue_strict_overflow_warning(c) (warn_strict_overflow >= (int) (c))
  95
  96 #endif
  97
  98 #endif /* ! GCC_FLAGS_H */