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f12b58b3 | 1 | /* Compilation switch flag definitions for GCC. |
bc233f0c | 2 | Copyright (C) 1987, 1988, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002, |
1eb1b33f | 3 | 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
b278476e | 4 | Free Software Foundation, Inc. |
addd8f36 | 5 | |
f12b58b3 | 6 | This file is part of GCC. |
addd8f36 | 7 | |
f12b58b3 | 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 | |
8c4c00c1 | 10 | Software Foundation; either version 3, or (at your option) any later |
f12b58b3 | 11 | version. |
addd8f36 | 12 | |
f12b58b3 | 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. | |
addd8f36 | 17 | |
18 | You should have received a copy of the GNU General Public License | |
8c4c00c1 | 19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
addd8f36 | 21 | |
518796ad | 22 | #ifndef GCC_FLAGS_H |
23 | #define GCC_FLAGS_H | |
24 | ||
0e4744ac | 25 | #include "coretypes.h" |
a317e77e | 26 | #include "flag-types.h" |
27 | #include "options.h" | |
f3f006ad | 28 | |
29 | #if !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS) && !defined(IN_RTS) | |
2e9da478 | 30 | |
cc4ca723 | 31 | /* Names of debug_info_type, for error messages. */ |
32 | extern const char *const debug_type_names[]; | |
33 | ||
d7175aef | 34 | extern int base_of_path (const char *path, const char **base_out); |
35 | extern void set_struct_debug_option (struct gcc_options *opts, | |
36 | const char *value); | |
0e4744ac | 37 | |
5ae82d58 | 38 | /* Run the second compilation of -fcompare-debug. Not defined using |
39 | Var in common.opt because this is used in Ada code and so must be | |
40 | an actual variable not a macro. */ | |
41 | extern int flag_compare_debug; | |
42 | ||
b212f378 | 43 | /* Global visibility options. */ |
44 | extern struct visibility_flags visibility_options; | |
45 | ||
7bfefa9d | 46 | /* True if this is the LTO front end (lto1). This is used to disable |
47 | gimple generation and lowering passes that are normally run on the | |
48 | output of a front end. These passes must be bypassed for lto since | |
48e1416a | 49 | they have already been done before the gimple was written. */ |
7bfefa9d | 50 | |
51 | extern bool in_lto_p; | |
52 | ||
6bd9d862 | 53 | /* Used to set the level of -Wstrict-aliasing in OPTS, when no level |
54 | is specified. The external way to set the default level is to use | |
48e1416a | 55 | -Wstrict-aliasing=level. |
e6fa0ea6 | 56 | ONOFF is assumed to take value 1 when -Wstrict-aliasing is specified, |
57 | and 0 otherwise. After calling this function, wstrict_aliasing will be | |
58 | set to the default value of -Wstrict_aliasing=level. */ | |
59 | ||
6bd9d862 | 60 | extern void set_Wstrict_aliasing (struct gcc_options *opts, int onoff); |
6fdade09 | 61 | |
addd8f36 | 62 | /* Nonzero for -dp: annotate the assembly with a comment describing the |
63 | pattern and alternative used. */ | |
64 | ||
65 | extern int flag_print_asm_name; | |
66 | \f | |
67 | /* Now the symbols that are set with `-f' switches. */ | |
68 | ||
addd8f36 | 69 | /* Nonzero if we are only using compiler to check syntax errors. */ |
70 | ||
a49a878f | 71 | extern int rtl_dump_and_exit; |
addd8f36 | 72 | |
090bd40b | 73 | /* True if printing into -fdump-final-insns= dump. */ |
74 | ||
75 | extern bool final_insns_dump_p; | |
76 | ||
07317e69 | 77 | /* Nonzero means make permerror produce warnings instead of errors. */ |
78 | ||
79 | extern int flag_permissive; | |
80 | ||
4f96aab5 | 81 | /* -dA causes debug information to be produced in |
82 | the generated assembly code (to make it more readable). This option | |
83 | is generally only of use to those who actually need to read the | |
84 | generated assembly code (perhaps while debugging the compiler itself). | |
85 | Currently, this switch is only used by dwarfout.c; however, it is intended | |
86 | to be a catchall for printing debug information in the assembler file. */ | |
87 | ||
88 | extern int flag_debug_asm; | |
89 | ||
66575a0b | 90 | /* Generate code for GNU or NeXT Objective-C runtime environment. */ |
91 | ||
92 | extern int flag_next_runtime; | |
93 | ||
af5e5fd0 | 94 | extern int flag_dump_rtl_in_asm; |
addd8f36 | 95 | \f |
96 | /* Other basic status info about current function. */ | |
97 | ||
821d4118 | 98 | /* Target-dependent global state. */ |
99 | struct target_flag_state { | |
100 | /* Values of the -falign-* flags: how much to align labels in code. | |
101 | 0 means `use default', 1 means `don't align'. | |
102 | For each variable, there is an _log variant which is the power | |
103 | of two not less than the variable, for .align output. */ | |
104 | int x_align_loops_log; | |
105 | int x_align_loops_max_skip; | |
106 | int x_align_jumps_log; | |
107 | int x_align_jumps_max_skip; | |
108 | int x_align_labels_log; | |
109 | int x_align_labels_max_skip; | |
110 | int x_align_functions_log; | |
0f60a834 | 111 | |
112 | /* The excess precision currently in effect. */ | |
113 | enum excess_precision x_flag_excess_precision; | |
821d4118 | 114 | }; |
115 | ||
116 | extern struct target_flag_state default_target_flag_state; | |
117 | #if SWITCHABLE_TARGET | |
118 | extern struct target_flag_state *this_target_flag_state; | |
119 | #else | |
120 | #define this_target_flag_state (&default_target_flag_state) | |
121 | #endif | |
122 | ||
123 | #define align_loops_log \ | |
124 | (this_target_flag_state->x_align_loops_log) | |
125 | #define align_loops_max_skip \ | |
126 | (this_target_flag_state->x_align_loops_max_skip) | |
127 | #define align_jumps_log \ | |
128 | (this_target_flag_state->x_align_jumps_log) | |
129 | #define align_jumps_max_skip \ | |
130 | (this_target_flag_state->x_align_jumps_max_skip) | |
131 | #define align_labels_log \ | |
132 | (this_target_flag_state->x_align_labels_log) | |
133 | #define align_labels_max_skip \ | |
134 | (this_target_flag_state->x_align_labels_max_skip) | |
135 | #define align_functions_log \ | |
136 | (this_target_flag_state->x_align_functions_log) | |
0f60a834 | 137 | #define flag_excess_precision \ |
138 | (this_target_flag_state->x_flag_excess_precision) | |
821d4118 | 139 | |
3eaf50a4 | 140 | /* Nonzero if we dump in VCG format, not plain text. */ |
141 | extern int dump_for_graph; | |
142 | ||
3eaf50a4 | 143 | extern enum graph_dump_types graph_dump_format; |
5bbb9f06 | 144 | |
4852b829 | 145 | extern enum stack_check_type flag_stack_check; |
146 | ||
e100aadc | 147 | /* Returns TRUE if generated code should match ABI version N or |
148 | greater is in use. */ | |
149 | ||
150 | #define abi_version_at_least(N) \ | |
151 | (flag_abi_version == 0 || flag_abi_version >= (N)) | |
152 | ||
981eb798 | 153 | /* True if overflow wraps around for the given integral type. That |
154 | is, TYPE_MAX + 1 == TYPE_MIN. */ | |
155 | #define TYPE_OVERFLOW_WRAPS(TYPE) \ | |
156 | (TYPE_UNSIGNED (TYPE) || flag_wrapv) | |
157 | ||
158 | /* True if overflow is undefined for the given integral type. We may | |
add6ee5e | 159 | optimize on the assumption that values in the type never overflow. |
160 | ||
161 | IMPORTANT NOTE: Any optimization based on TYPE_OVERFLOW_UNDEFINED | |
162 | must issue a warning based on warn_strict_overflow. In some cases | |
163 | it will be appropriate to issue the warning immediately, and in | |
164 | other cases it will be appropriate to simply set a flag and let the | |
165 | caller decide whether a warning is appropriate or not. */ | |
981eb798 | 166 | #define TYPE_OVERFLOW_UNDEFINED(TYPE) \ |
167 | (!TYPE_UNSIGNED (TYPE) && !flag_wrapv && !flag_trapv && flag_strict_overflow) | |
168 | ||
169 | /* True if overflow for the given integral type should issue a | |
170 | trap. */ | |
171 | #define TYPE_OVERFLOW_TRAPS(TYPE) \ | |
172 | (!TYPE_UNSIGNED (TYPE) && flag_trapv) | |
173 | ||
e867fa7f | 174 | /* True if pointer types have undefined overflow. */ |
175 | #define POINTER_TYPE_OVERFLOW_UNDEFINED (flag_strict_overflow) | |
176 | ||
add6ee5e | 177 | /* Whether to emit an overflow warning whose code is C. */ |
184c9ca9 | 178 | #define issue_strict_overflow_warning(c) (warn_strict_overflow >= (int) (c)) |
add6ee5e | 179 | |
f3f006ad | 180 | #endif |
181 | ||
2a281353 | 182 | #endif /* ! GCC_FLAGS_H */ |