gcc/flags.h

   1 /* Compilation switch flag definitions for GCC.
   2    Copyright (C) 1987, 1988, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002,
   3    2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
   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_FLAGS_H
  23 #define GCC_FLAGS_H
  24
  25 #include "flag-types.h"
  26 #include "options.h"
  27
  28 #if !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS) && !defined(IN_RTS)
  29
  30 /* Names of debug_info_type, for error messages.  */
  31 extern const char *const debug_type_names[];
  32
  33 extern void strip_off_ending (char *, int);
  34 extern int base_of_path (const char *path, const char **base_out);
  35
  36 /* Return true iff flags are set as if -ffast-math.  */
  37 extern bool fast_math_flags_set_p (const struct gcc_options *);
  38 extern bool fast_math_flags_struct_set_p (struct cl_optimization *);
  39
  40 \f
  41 /* Now the symbols that are set with `-f' switches.  */
  42
  43 /* True if printing into -fdump-final-insns= dump.  */
  44
  45 extern bool final_insns_dump_p;
  46
  47 \f
  48 /* Other basic status info about current function.  */
  49
  50 /* Target-dependent global state.  */
  51 struct target_flag_state {
  52   /* Values of the -falign-* flags: how much to align labels in code.
  53      0 means `use default', 1 means `don't align'.
  54      For each variable, there is an _log variant which is the power
  55      of two not less than the variable, for .align output.  */
  56   int x_align_loops_log;
  57   int x_align_loops_max_skip;
  58   int x_align_jumps_log;
  59   int x_align_jumps_max_skip;
  60   int x_align_labels_log;
  61   int x_align_labels_max_skip;
  62   int x_align_functions_log;
  63
  64   /* The excess precision currently in effect.  */
  65   enum excess_precision x_flag_excess_precision;
  66 };
  67
  68 extern struct target_flag_state default_target_flag_state;
  69 #if SWITCHABLE_TARGET
  70 extern struct target_flag_state *this_target_flag_state;
  71 #else
  72 #define this_target_flag_state (&default_target_flag_state)
  73 #endif
  74
  75 #define align_loops_log \
  76   (this_target_flag_state->x_align_loops_log)
  77 #define align_loops_max_skip \
  78   (this_target_flag_state->x_align_loops_max_skip)
  79 #define align_jumps_log \
  80   (this_target_flag_state->x_align_jumps_log)
  81 #define align_jumps_max_skip \
  82   (this_target_flag_state->x_align_jumps_max_skip)
  83 #define align_labels_log \
  84   (this_target_flag_state->x_align_labels_log)
  85 #define align_labels_max_skip \
  86   (this_target_flag_state->x_align_labels_max_skip)
  87 #define align_functions_log \
  88   (this_target_flag_state->x_align_functions_log)
  89 #define flag_excess_precision \
  90   (this_target_flag_state->x_flag_excess_precision)
  91
  92 /* Nonzero if we dump in VCG format, not plain text.  */
  93 extern int dump_for_graph;
  94
  95 /* Returns TRUE if generated code should match ABI version N or
  96    greater is in use.  */
  97
  98 #define abi_version_at_least(N) \
  99   (flag_abi_version == 0 || flag_abi_version >= (N))
 100
 101 /* Whether to emit an overflow warning whose code is C.  */
 102 #define issue_strict_overflow_warning(c) (warn_strict_overflow >= (int) (c))
 103
 104 #endif
 105
 106 #endif /* ! GCC_FLAGS_H */