/* Compilation switch flag definitions for GCC.
Copyright (C) 1987, 1988, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002,
- 2003, 2004, 2005, 2006, 2007
+ 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 2, or (at your option) any later
+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
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+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"
-enum debug_info_type
-{
- NO_DEBUG, /* Write no debug info. */
- DBX_DEBUG, /* Write BSD .stabs for DBX (using dbxout.c). */
- SDB_DEBUG, /* Write COFF for (old) SDB (using sdbout.c). */
- DWARF2_DEBUG, /* Write Dwarf v2 debug info (using dwarf2out.c). */
- XCOFF_DEBUG, /* Write IBM/Xcoff debug info (using dbxout.c). */
- VMS_DEBUG, /* Write VMS debug info (using vmsdbgout.c). */
- VMS_AND_DWARF2_DEBUG /* Write VMS debug info (using vmsdbgout.c).
- and DWARF v2 debug info (using dwarf2out.c). */
-};
+#if !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS) && !defined(IN_RTS)
/* Specify which kind of debugging info to generate. */
extern enum debug_info_type write_symbols;
/* Names of debug_info_type, for error messages. */
extern const char *const debug_type_names[];
-enum debug_info_level
-{
- DINFO_LEVEL_NONE, /* Write no debugging info. */
- DINFO_LEVEL_TERSE, /* Write minimal info to support tracebacks only. */
- DINFO_LEVEL_NORMAL, /* Write info for all declarations (and line table). */
- DINFO_LEVEL_VERBOSE /* Write normal info plus #define/#undef info. */
-};
-
/* Specify how much debugging info to generate. */
extern enum debug_info_level debug_info_level;
+extern int base_of_path (const char *path, const char **base_out);
+extern void set_struct_debug_option (struct gcc_options *opts,
+ const char *value);
+
/* Nonzero means use GNU-only extensions in the generated symbolic
debugging information. */
extern bool use_gnu_debug_info_extensions;
-/* Enumerate visibility settings. This is deliberately ordered from most
- to least visibility. */
-#ifndef SYMBOL_VISIBILITY_DEFINED
-#define SYMBOL_VISIBILITY_DEFINED
-enum symbol_visibility
-{
- VISIBILITY_DEFAULT,
- VISIBILITY_PROTECTED,
- VISIBILITY_HIDDEN,
- VISIBILITY_INTERNAL
-};
-#endif
-
-/* The default visibility for all symbols (unless overridden). */
-extern enum symbol_visibility default_visibility;
-
-struct visibility_flags
-{
- unsigned inpragma : 1; /* True when in #pragma GCC visibility. */
- unsigned inlines_hidden : 1; /* True when -finlineshidden in effect. */
-};
+/* Run the second compilation of -fcompare-debug. Not defined using
+ Var in common.opt because this is used in Ada code and so must be
+ an actual variable not a macro. */
+extern int flag_compare_debug;
/* Global visibility options. */
extern struct visibility_flags visibility_options;
-/* Nonzero means do optimizations. -opt. */
-
-extern int optimize;
-
-/* Nonzero means optimize for size. -Os. */
-
-extern int optimize_size;
-
-/* Do print extra warnings (such as for uninitialized variables).
- -W/-Wextra. */
-
-extern bool extra_warnings;
+/* 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. */
-/* Nonzero to warn about unused variables, functions et.al. Use
- set_Wunused() to update the -Wunused-* flags that correspond to the
- -Wunused option. */
+extern bool in_lto_p;
-extern void set_Wunused (int setting);
+/* 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. */
-/* Nonzero means warn about any objects definitions whose size is larger
- than N bytes. Also want about function definitions whose returned
- values are larger than N bytes. The value N is in `larger_than_size'. */
-
-extern bool warn_larger_than;
-extern HOST_WIDE_INT larger_than_size;
-
-/* Nonzero means warn about constructs which might not be strict
- aliasing safe. */
-
-extern int warn_strict_aliasing;
-
-/* Nonzero means warn about optimizations which rely on undefined
- signed overflow. */
-
-extern int warn_strict_overflow;
-
-/* Temporarily suppress certain warnings.
- This is set while reading code from a system header file. */
-
-extern int in_system_header;
+extern void set_Wstrict_aliasing (struct gcc_options *opts, int onoff);
/* Nonzero for -dp: annotate the assembly with a comment describing the
pattern and alternative used. */
\f
/* Now the symbols that are set with `-f' switches. */
-/* Nonzero means `char' should be signed. */
-
-extern int flag_signed_char;
-
-/* Nonzero means give an enum type only as many bytes as it needs. A value
- of 2 means it has not yet been initialized. */
-
-extern int flag_short_enums;
-
-/* Nonzero for -fpcc-struct-return: return values the same way PCC does. */
-
-extern int flag_pcc_struct_return;
-
-/* 0 means straightforward implementation of complex divide acceptable.
- 1 means wide ranges of inputs must work for complex divide.
- 2 means C99-like requirements for complex multiply and divide. */
-
-extern int flag_complex_method;
-
-/* Nonzero means that we don't want inlining by virtue of -fno-inline,
- not just because the tree inliner turned us off. */
-
-extern int flag_really_no_inline;
-
/* Nonzero if we are only using compiler to check syntax errors. */
extern int rtl_dump_and_exit;
-/* Nonzero means we should save auxiliary info into a .X file. */
-
-extern int flag_gen_aux_info;
-
-/* Nonzero means suppress output of instruction numbers and line number
- notes in debugging dumps. */
-
-extern int flag_dump_unnumbered;
+/* True if printing into -fdump-final-insns= dump. */
-/* Nonzero means change certain warnings into errors.
- Usually these are warnings about failure to conform to some standard. */
+extern bool final_insns_dump_p;
-extern int flag_pedantic_errors;
+/* Nonzero means make permerror produce warnings instead of errors. */
-/* Nonzero if we are compiling code for a shared library, zero for
- executable. */
-
-extern int flag_shlib;
+extern int flag_permissive;
/* -dA causes debug information to be produced in
the generated assembly code (to make it more readable). This option
\f
/* Other basic status info about current function. */
-/* Nonzero means current function must be given a frame pointer.
- Set in stmt.c if anything is allocated on the stack there.
- Set in reload1.c if anything is allocated on the stack there. */
-
-extern int frame_pointer_needed;
-
-/* Nonzero if subexpressions must be evaluated from left-to-right. */
-extern int flag_evaluation_order;
-
-/* Value of the -G xx switch, and whether it was passed or not. */
-extern unsigned HOST_WIDE_INT g_switch_value;
-extern bool g_switch_set;
-
-/* 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. */
+/* 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 int align_loops_log;
-extern int align_loops_max_skip;
-extern int align_jumps_log;
-extern int align_jumps_max_skip;
-extern int align_labels_log;
-extern int align_labels_max_skip;
-extern int align_functions_log;
+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
-/* Like align_functions_log above, but used by front-ends to force the
- minimum function alignment. Zero means no alignment is forced. */
-extern int force_align_functions_log;
+#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;
-/* Selection of the graph form. */
-enum graph_dump_types
-{
- no_graph = 0,
- vcg
-};
extern enum graph_dump_types graph_dump_format;
-/* Nonzero means to collect statistics which might be expensive
- and to print them when we are done. */
-extern int flag_detailed_statistics;
-
-/* Nonzero means that we defer emitting functions until they are actually
- used. */
-extern int flag_remove_unreachable_functions;
-
-/* Nonzero if we should track variables. */
-extern int flag_var_tracking;
-
-/* True if flag_speculative_prefetching was set by user. Used to suppress
- warning message in case flag was set by -fprofile-{generate,use}. */
-extern bool flag_speculative_prefetching_set;
+extern enum stack_check_type flag_stack_check;
/* 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 the given mode has a NaN representation and the treatment of
- NaN operands is important. Certain optimizations, such as folding
- x * 0 into 0, are not correct for NaN operands, and are normally
- disabled for modes with NaNs. The user can ask for them to be
- done anyway using the -funsafe-math-optimizations switch. */
-#define HONOR_NANS(MODE) \
- (MODE_HAS_NANS (MODE) && !flag_finite_math_only)
-
-/* Like HONOR_NANs, but true if we honor signaling NaNs (or sNaNs). */
-#define HONOR_SNANS(MODE) (flag_signaling_nans && HONOR_NANS (MODE))
-
-/* As for HONOR_NANS, but true if the mode can represent infinity and
- the treatment of infinite values is important. */
-#define HONOR_INFINITIES(MODE) \
- (MODE_HAS_INFINITIES (MODE) && !flag_finite_math_only)
-
-/* Like HONOR_NANS, but true if the given mode distinguishes between
- positive and negative zero, and the sign of zero is important. */
-#define HONOR_SIGNED_ZEROS(MODE) \
- (MODE_HAS_SIGNED_ZEROS (MODE) && flag_signed_zeros)
-
-/* Like HONOR_NANS, but true if given mode supports sign-dependent rounding,
- and the rounding mode is important. */
-#define HONOR_SIGN_DEPENDENT_ROUNDING(MODE) \
- (MODE_HAS_SIGN_DEPENDENT_ROUNDING (MODE) && flag_rounding_math)
-
/* True if overflow wraps around for the given integral type. That
is, TYPE_MAX + 1 == TYPE_MIN. */
#define TYPE_OVERFLOW_WRAPS(TYPE) \
#define TYPE_OVERFLOW_TRAPS(TYPE) \
(!TYPE_UNSIGNED (TYPE) && flag_trapv)
-/* Names for the different levels of -Wstrict-overflow=N. The numeric
- values here correspond to N. */
-
-enum warn_strict_overflow_code
-{
- /* Overflow warning that should be issued with -Wall: a questionable
- construct that is easy to avoid even when using macros. Example:
- folding (x + CONSTANT > x) to 1. */
- WARN_STRICT_OVERFLOW_ALL = 1,
- /* Overflow warning about folding a comparison to a constant because
- of undefined signed overflow, other than cases covered by
- WARN_STRICT_OVERFLOW_ALL. Example: folding (abs (x) >= 0) to 1
- (this is false when x == INT_MIN). */
- WARN_STRICT_OVERFLOW_CONDITIONAL = 2,
- /* Overflow warning about changes to comparisons other than folding
- them to a constant. Example: folding (x + 1 > 1) to (x > 0). */
- WARN_STRICT_OVERFLOW_COMPARISON = 3,
- /* Overflow warnings not covered by the above cases. Example:
- folding ((x * 10) / 5) to (x * 2). */
- WARN_STRICT_OVERFLOW_MISC = 4,
- /* Overflow warnings about reducing magnitude of constants in
- comparison. Example: folding (x + 2 > y) to (x + 1 >= y). */
- WARN_STRICT_OVERFLOW_MAGNITUDE = 5
-};
+/* 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 */
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