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Diffstat (limited to 'gcc/flags.h')
| -rw-r--r-- | gcc/flags.h | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/gcc/flags.h b/gcc/flags.h new file mode 100644 index 000000000..41049557e --- /dev/null +++ b/gcc/flags.h @@ -0,0 +1,153 @@ +/* Compilation switch flag definitions for GCC. + Copyright (C) 1987, 1988, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002, + 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 + Free Software Foundation, Inc. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received a copy of the GNU General Public License +along with GCC; see the file COPYING3. If not see +<http://www.gnu.org/licenses/>. */ + +#ifndef GCC_FLAGS_H +#define GCC_FLAGS_H + +#include "coretypes.h" +#include "flag-types.h" +#include "options.h" + +#if !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS) && !defined(IN_RTS) + +/* Names of debug_info_type, for error messages. */ +extern const char *const debug_type_names[]; + +extern void strip_off_ending (char *, int); +extern int base_of_path (const char *path, const char **base_out); + +/* True if this is the LTO front end (lto1). This is used to disable + gimple generation and lowering passes that are normally run on the + output of a front end. These passes must be bypassed for lto since + they have already been done before the gimple was written. */ + +extern bool in_lto_p; + +/* Return true iff flags are set as if -ffast-math. */ +extern bool fast_math_flags_set_p (const struct gcc_options *); +extern bool fast_math_flags_struct_set_p (struct cl_optimization *); + +/* Used to set the level of -Wstrict-aliasing in OPTS, when no level + is specified. The external way to set the default level is to use + -Wstrict-aliasing=level. + ONOFF is assumed to take value 1 when -Wstrict-aliasing is specified, + and 0 otherwise. After calling this function, wstrict_aliasing will be + set to the default value of -Wstrict_aliasing=level. */ + +extern void set_Wstrict_aliasing (struct gcc_options *opts, int onoff); + +/* Now the symbols that are set with `-f' switches. */ + +/* True if printing into -fdump-final-insns= dump. */ + +extern bool final_insns_dump_p; + +/* Nonzero means make permerror produce warnings instead of errors. */ + +extern int flag_permissive; + +/* Generate code for GNU or NeXT Objective-C runtime environment. */ + +extern int flag_next_runtime; + +/* Other basic status info about current function. */ + +/* Target-dependent global state. */ +struct target_flag_state { + /* Values of the -falign-* flags: how much to align labels in code. + 0 means `use default', 1 means `don't align'. + For each variable, there is an _log variant which is the power + of two not less than the variable, for .align output. */ + int x_align_loops_log; + int x_align_loops_max_skip; + int x_align_jumps_log; + int x_align_jumps_max_skip; + int x_align_labels_log; + int x_align_labels_max_skip; + int x_align_functions_log; + + /* The excess precision currently in effect. */ + enum excess_precision x_flag_excess_precision; +}; + +extern struct target_flag_state default_target_flag_state; +#if SWITCHABLE_TARGET +extern struct target_flag_state *this_target_flag_state; +#else +#define this_target_flag_state (&default_target_flag_state) +#endif + +#define align_loops_log \ + (this_target_flag_state->x_align_loops_log) +#define align_loops_max_skip \ + (this_target_flag_state->x_align_loops_max_skip) +#define align_jumps_log \ + (this_target_flag_state->x_align_jumps_log) +#define align_jumps_max_skip \ + (this_target_flag_state->x_align_jumps_max_skip) +#define align_labels_log \ + (this_target_flag_state->x_align_labels_log) +#define align_labels_max_skip \ + (this_target_flag_state->x_align_labels_max_skip) +#define align_functions_log \ + (this_target_flag_state->x_align_functions_log) +#define flag_excess_precision \ + (this_target_flag_state->x_flag_excess_precision) + +/* Nonzero if we dump in VCG format, not plain text. */ +extern int dump_for_graph; + +/* Returns TRUE if generated code should match ABI version N or + greater is in use. */ + +#define abi_version_at_least(N) \ + (flag_abi_version == 0 || flag_abi_version >= (N)) + +/* True if overflow wraps around for the given integral type. That + is, TYPE_MAX + 1 == TYPE_MIN. */ +#define TYPE_OVERFLOW_WRAPS(TYPE) \ + (TYPE_UNSIGNED (TYPE) || flag_wrapv) + +/* True if overflow is undefined for the given integral type. We may + optimize on the assumption that values in the type never overflow. + + IMPORTANT NOTE: Any optimization based on TYPE_OVERFLOW_UNDEFINED + must issue a warning based on warn_strict_overflow. In some cases + it will be appropriate to issue the warning immediately, and in + other cases it will be appropriate to simply set a flag and let the + caller decide whether a warning is appropriate or not. */ +#define TYPE_OVERFLOW_UNDEFINED(TYPE) \ + (!TYPE_UNSIGNED (TYPE) && !flag_wrapv && !flag_trapv && flag_strict_overflow) + +/* True if overflow for the given integral type should issue a + trap. */ +#define TYPE_OVERFLOW_TRAPS(TYPE) \ + (!TYPE_UNSIGNED (TYPE) && flag_trapv) + +/* True if pointer types have undefined overflow. */ +#define POINTER_TYPE_OVERFLOW_UNDEFINED (flag_strict_overflow) + +/* Whether to emit an overflow warning whose code is C. */ +#define issue_strict_overflow_warning(c) (warn_strict_overflow >= (int) (c)) + +#endif + +#endif /* ! GCC_FLAGS_H */ |