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annotate gcc/flags.h @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
parents f6334be47118
children 84e7813d76e9
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1 /* Compilation switch flag definitions for GCC.
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2 Copyright (C) 1987-2017 Free Software Foundation, Inc.
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3
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4 This file is part of GCC.
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5
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6 GCC is free software; you can redistribute it and/or modify it under
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7 the terms of the GNU General Public License as published by the Free
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8 Software Foundation; either version 3, or (at your option) any later
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9 version.
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10
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11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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16 You should have received a copy of the GNU General Public License
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17 along with GCC; see the file COPYING3. If not see
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18 <http://www.gnu.org/licenses/>. */
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19
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20 #ifndef GCC_FLAGS_H
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21 #define GCC_FLAGS_H
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23 #if !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS) && !defined(IN_RTS)
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25 /* Names of debug_info_type, for error messages. */
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26 extern const char *const debug_type_names[];
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28 extern void strip_off_ending (char *, int);
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29 extern int base_of_path (const char *path, const char **base_out);
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31 /* Return true iff flags are set as if -ffast-math. */
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32 extern bool fast_math_flags_set_p (const struct gcc_options *);
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33 extern bool fast_math_flags_struct_set_p (struct cl_optimization *);
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36 /* Now the symbols that are set with `-f' switches. */
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38 /* True if printing into -fdump-final-insns= dump. */
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39
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40 extern bool final_insns_dump_p;
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43 /* Other basic status info about current function. */
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45 /* Target-dependent global state. */
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46 struct target_flag_state {
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47 /* Values of the -falign-* flags: how much to align labels in code.
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48 0 means `use default', 1 means `don't align'.
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49 For each variable, there is an _log variant which is the power
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50 of two not less than the variable, for .align output. */
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51 int x_align_loops_log;
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52 int x_align_loops_max_skip;
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53 int x_align_jumps_log;
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54 int x_align_jumps_max_skip;
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55 int x_align_labels_log;
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56 int x_align_labels_max_skip;
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57 int x_align_functions_log;
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59 /* The excess precision currently in effect. */
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60 enum excess_precision x_flag_excess_precision;
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61 };
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63 extern struct target_flag_state default_target_flag_state;
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64 #if SWITCHABLE_TARGET
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65 extern struct target_flag_state *this_target_flag_state;
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66 #else
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67 #define this_target_flag_state (&default_target_flag_state)
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68 #endif
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70 #define align_loops_log \
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71 (this_target_flag_state->x_align_loops_log)
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72 #define align_loops_max_skip \
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73 (this_target_flag_state->x_align_loops_max_skip)
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74 #define align_jumps_log \
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75 (this_target_flag_state->x_align_jumps_log)
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76 #define align_jumps_max_skip \
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77 (this_target_flag_state->x_align_jumps_max_skip)
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78 #define align_labels_log \
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79 (this_target_flag_state->x_align_labels_log)
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80 #define align_labels_max_skip \
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82 #define align_functions_log \
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83 (this_target_flag_state->x_align_functions_log)
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84 #define flag_excess_precision \
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85 (this_target_flag_state->x_flag_excess_precision)
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87 /* Returns TRUE if generated code should match ABI version N or
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88 greater is in use. */
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89
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90 #define abi_version_at_least(N) \
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91 (flag_abi_version == 0 || flag_abi_version >= (N))
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92
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93 /* Whether to emit an overflow warning whose code is C. */
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94 #define issue_strict_overflow_warning(c) (warn_strict_overflow >= (int) (c))
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96 #endif
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98 #endif /* ! GCC_FLAGS_H */