comparison gcc/flags.h @ 16:04ced10e8804

gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
parents f6334be47118
children 84e7813d76e9
comparison
equal deleted inserted replaced
15:561a7518be6b 16:04ced10e8804
1 /* Compilation switch flag definitions for GCC. 1 /* Compilation switch flag definitions for GCC.
2 Copyright (C) 1987, 1988, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002, 2 Copyright (C) 1987-2017 Free Software Foundation, Inc.
3 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
4 Free Software Foundation, Inc.
5 3
6 This file is part of GCC. 4 This file is part of GCC.
7 5
8 GCC is free software; you can redistribute it and/or modify it under 6 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 7 the terms of the GNU General Public License as published by the Free
20 <http://www.gnu.org/licenses/>. */ 18 <http://www.gnu.org/licenses/>. */
21 19
22 #ifndef GCC_FLAGS_H 20 #ifndef GCC_FLAGS_H
23 #define GCC_FLAGS_H 21 #define GCC_FLAGS_H
24 22
25 #include "coretypes.h"
26 #include "flag-types.h"
27 #include "options.h"
28
29 #if !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS) && !defined(IN_RTS) 23 #if !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS) && !defined(IN_RTS)
30 24
31 /* Names of debug_info_type, for error messages. */ 25 /* Names of debug_info_type, for error messages. */
32 extern const char *const debug_type_names[]; 26 extern const char *const debug_type_names[];
33 27
34 extern void strip_off_ending (char *, int); 28 extern void strip_off_ending (char *, int);
35 extern int base_of_path (const char *path, const char **base_out); 29 extern int base_of_path (const char *path, const char **base_out);
36 30
37 /* True if this is the LTO front end (lto1). This is used to disable
38 gimple generation and lowering passes that are normally run on the
39 output of a front end. These passes must be bypassed for lto since
40 they have already been done before the gimple was written. */
41
42 extern bool in_lto_p;
43
44 /* Return true iff flags are set as if -ffast-math. */ 31 /* Return true iff flags are set as if -ffast-math. */
45 extern bool fast_math_flags_set_p (const struct gcc_options *); 32 extern bool fast_math_flags_set_p (const struct gcc_options *);
46 extern bool fast_math_flags_struct_set_p (struct cl_optimization *); 33 extern bool fast_math_flags_struct_set_p (struct cl_optimization *);
47 34
48 /* Used to set the level of -Wstrict-aliasing in OPTS, when no level
49 is specified. The external way to set the default level is to use
50 -Wstrict-aliasing=level.
51 ONOFF is assumed to take value 1 when -Wstrict-aliasing is specified,
52 and 0 otherwise. After calling this function, wstrict_aliasing will be
53 set to the default value of -Wstrict_aliasing=level. */
54
55 extern void set_Wstrict_aliasing (struct gcc_options *opts, int onoff);
56 35
57 /* Now the symbols that are set with `-f' switches. */ 36 /* Now the symbols that are set with `-f' switches. */
58 37
59 /* True if printing into -fdump-final-insns= dump. */ 38 /* True if printing into -fdump-final-insns= dump. */
60 39
61 extern bool final_insns_dump_p; 40 extern bool final_insns_dump_p;
62 41
63 /* Nonzero means make permerror produce warnings instead of errors. */
64
65 extern int flag_permissive;
66
67 /* Generate code for GNU or NeXT Objective-C runtime environment. */
68
69 extern int flag_next_runtime;
70 42
71 /* Other basic status info about current function. */ 43 /* Other basic status info about current function. */
72 44
73 /* Target-dependent global state. */ 45 /* Target-dependent global state. */
74 struct target_flag_state { 46 struct target_flag_state {
110 #define align_functions_log \ 82 #define align_functions_log \
111 (this_target_flag_state->x_align_functions_log) 83 (this_target_flag_state->x_align_functions_log)
112 #define flag_excess_precision \ 84 #define flag_excess_precision \
113 (this_target_flag_state->x_flag_excess_precision) 85 (this_target_flag_state->x_flag_excess_precision)
114 86
115 /* Nonzero if we dump in VCG format, not plain text. */
116 extern int dump_for_graph;
117
118 /* Returns TRUE if generated code should match ABI version N or 87 /* Returns TRUE if generated code should match ABI version N or
119 greater is in use. */ 88 greater is in use. */
120 89
121 #define abi_version_at_least(N) \ 90 #define abi_version_at_least(N) \
122 (flag_abi_version == 0 || flag_abi_version >= (N)) 91 (flag_abi_version == 0 || flag_abi_version >= (N))
123
124 /* True if overflow wraps around for the given integral type. That
125 is, TYPE_MAX + 1 == TYPE_MIN. */
126 #define TYPE_OVERFLOW_WRAPS(TYPE) \
127 (TYPE_UNSIGNED (TYPE) || flag_wrapv)
128
129 /* True if overflow is undefined for the given integral type. We may
130 optimize on the assumption that values in the type never overflow.
131
132 IMPORTANT NOTE: Any optimization based on TYPE_OVERFLOW_UNDEFINED
133 must issue a warning based on warn_strict_overflow. In some cases
134 it will be appropriate to issue the warning immediately, and in
135 other cases it will be appropriate to simply set a flag and let the
136 caller decide whether a warning is appropriate or not. */
137 #define TYPE_OVERFLOW_UNDEFINED(TYPE) \
138 (!TYPE_UNSIGNED (TYPE) && !flag_wrapv && !flag_trapv && flag_strict_overflow)
139
140 /* True if overflow for the given integral type should issue a
141 trap. */
142 #define TYPE_OVERFLOW_TRAPS(TYPE) \
143 (!TYPE_UNSIGNED (TYPE) && flag_trapv)
144
145 /* True if pointer types have undefined overflow. */
146 #define POINTER_TYPE_OVERFLOW_UNDEFINED (flag_strict_overflow)
147 92
148 /* Whether to emit an overflow warning whose code is C. */ 93 /* Whether to emit an overflow warning whose code is C. */
149 #define issue_strict_overflow_warning(c) (warn_strict_overflow >= (int) (c)) 94 #define issue_strict_overflow_warning(c) (warn_strict_overflow >= (int) (c))
150 95
151 #endif 96 #endif