gcc/flags.h

   1 /* Compilation switch flag definitions for GCC.
   2    Copyright (C) 1987-2013 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 #include "flag-types.h"
  24 #include "options.h"
  25
  26 #if !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS) && !defined(IN_RTS)
  27
  28 /* Names of debug_info_type, for error messages.  */
  29 extern const char *const debug_type_names[];
  30
  31 extern void strip_off_ending (char *, int);
  32 extern int base_of_path (const char *path, const char **base_out);
  33
  34 /* Nonzero means use UPC extensions in the generated symbolic
  35    debugging information (DWARF2 only).  */
  36 extern int use_upc_dwarf2_extensions;
  37
  38 /* Return true iff flags are set as if -ffast-math.  */
  39 extern bool fast_math_flags_set_p (const struct gcc_options *);
  40 extern bool fast_math_flags_struct_set_p (struct cl_optimization *);
  41
  42 \f
  43 /* Now the symbols that are set with `-f' switches.  */
  44
  45 /* True if printing into -fdump-final-insns= dump.  */
  46
  47 extern bool final_insns_dump_p;
  48
  49 \f
  50 /* Other basic status info about current function.  */
  51
  52 /* Target-dependent global state.  */
  53 struct target_flag_state {
  54   /* Values of the -falign-* flags: how much to align labels in code.
  55      0 means `use default', 1 means `don't align'.
  56      For each variable, there is an _log variant which is the power
  57      of two not less than the variable, for .align output.  */
  58   int x_align_loops_log;
  59   int x_align_loops_max_skip;
  60   int x_align_jumps_log;
  61   int x_align_jumps_max_skip;
  62   int x_align_labels_log;
  63   int x_align_labels_max_skip;
  64   int x_align_functions_log;
  65
  66   /* The excess precision currently in effect.  */
  67   enum excess_precision x_flag_excess_precision;
  68 };
  69
  70 extern struct target_flag_state default_target_flag_state;
  71 #if SWITCHABLE_TARGET
  72 extern struct target_flag_state *this_target_flag_state;
  73 #else
  74 #define this_target_flag_state (&default_target_flag_state)
  75 #endif
  76
  77 #define align_loops_log \
  78   (this_target_flag_state->x_align_loops_log)
  79 #define align_loops_max_skip \
  80   (this_target_flag_state->x_align_loops_max_skip)
  81 #define align_jumps_log \
  82   (this_target_flag_state->x_align_jumps_log)
  83 #define align_jumps_max_skip \
  84   (this_target_flag_state->x_align_jumps_max_skip)
  85 #define align_labels_log \
  86   (this_target_flag_state->x_align_labels_log)
  87 #define align_labels_max_skip \
  88   (this_target_flag_state->x_align_labels_max_skip)
  89 #define align_functions_log \
  90   (this_target_flag_state->x_align_functions_log)
  91 #define flag_excess_precision \
  92   (this_target_flag_state->x_flag_excess_precision)
  93
  94 /* Returns TRUE if generated code should match ABI version N or
  95    greater is in use.  */
  96
  97 #define abi_version_at_least(N) \
  98   (flag_abi_version == 0 || flag_abi_version >= (N))
  99
 100 /* Whether to emit an overflow warning whose code is C.  */
 101 #define issue_strict_overflow_warning(c) (warn_strict_overflow >= (int) (c))
 102
 103 #endif
 104
 105 #endif /* ! GCC_FLAGS_H */