/* 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
+ 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
This file is part of GCC.
#define GCC_FLAGS_H
#include "coretypes.h"
+#include "flag-types.h"
#include "options.h"
-#include "real.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). */
-};
-/* Specify which kind of debugging info to generate. */
-extern enum debug_info_type write_symbols;
+#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[];
-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. */
-};
+extern void strip_off_ending (char *, int);
+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);
-/* Specify how much debugging info to generate. */
-extern enum debug_info_level debug_info_level;
-
-/* A major contribution to object and executable size is debug
- information size. A major contribution to debug information
- size is struct descriptions replicated in several object files.
- The following function determines whether or not debug information
- should be generated for a given struct. The indirect parameter
- indicates that the struct is being handled indirectly, via
- a pointer. See opts.c for the implementation. */
-
-enum debug_info_usage
-{
- DINFO_USAGE_DFN, /* A struct definition. */
- DINFO_USAGE_DIR_USE, /* A direct use, such as the type of a variable. */
- DINFO_USAGE_IND_USE, /* An indirect use, such as through a pointer. */
- DINFO_USAGE_NUM_ENUMS /* The number of enumerators. */
-};
-
-extern bool should_emit_struct_debug (tree type_decl, enum debug_info_usage);
-extern void set_struct_debug_option (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;
+/* 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 means do optimizations. -opt. */
+extern bool in_lto_p;
-extern int optimize;
+/* 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 *);
-/* Nonzero means optimize for size. -Os. */
-
-extern int optimize_size;
-
-/* Used to set the level of -Wstrict-aliasing, when no level is specified.
- The external way to set the default level is to use
- -Wstrict-aliasing=level.
+/* 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 (int onoff);
-
-/* 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 any function whose frame size is larger
- than N bytes. */
-
-extern bool warn_frame_larger_than;
-extern HOST_WIDE_INT frame_larger_than_size;
+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 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. */
+/* True if printing into -fdump-final-insns= dump. */
-extern int flag_dump_unnumbered;
-
-/* Nonzero means change certain warnings into errors.
- Usually these are warnings about failure to conform to some standard. */
-
-extern int flag_pedantic_errors;
+extern bool final_insns_dump_p;
/* Nonzero means make permerror produce warnings instead of errors. */
extern int flag_permissive;
-/* Nonzero if we are compiling code for a shared library, zero for
- executable. */
-
-extern int flag_shlib;
-
/* -dA causes debug information to be produced in
the generated assembly code (to make it more readable). This option
is generally only of use to those who actually need to read the
extern int flag_next_runtime;
extern int flag_dump_rtl_in_asm;
-
-/* The algorithm used for the integrated register allocator (IRA). */
-enum ira_algorithm
-{
- IRA_ALGORITHM_CB,
- IRA_ALGORITHM_PRIORITY
-};
-
-extern enum ira_algorithm flag_ira_algorithm;
-
-/* The regions used for the integrated register allocator (IRA). */
-enum ira_region
-{
- IRA_REGION_ONE,
- IRA_REGION_ALL,
- IRA_REGION_MIXED
-};
-
-extern enum ira_region flag_ira_region;
-
-extern unsigned int flag_ira_verbose;
-
-/* The options for excess precision. */
-enum excess_precision
-{
- EXCESS_PRECISION_DEFAULT,
- EXCESS_PRECISION_FAST,
- EXCESS_PRECISION_STANDARD
-};
-
-/* The excess precision specified on the command line, or defaulted by
- the front end. */
-extern enum excess_precision flag_excess_precision_cmdline;
-
-/* The excess precision currently in effect. */
-extern enum excess_precision flag_excess_precision;
-
\f
/* Other basic status info about current function. */
-/* 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;
-
-/* Same for selective scheduling. */
-extern bool sel_sched_switch_set;
-
-/* Whether to run the warn_unused_result attribute pass. */
-extern bool flag_warn_unused_result;
+/* 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;
+};
-/* 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. */
+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
-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;
+#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;
-
-/* Type of stack check. */
-enum stack_check_type
-{
- /* Do not check the stack. */
- NO_STACK_CHECK = 0,
-
- /* Check the stack generically, i.e. assume no specific support
- from the target configuration files. */
- GENERIC_STACK_CHECK,
-
- /* Check the stack and rely on the target configuration files to
- check the static frame of functions, i.e. use the generic
- mechanism only for dynamic stack allocations. */
- STATIC_BUILTIN_STACK_CHECK,
-
- /* Check the stack and entirely rely on the target configuration
- files, i.e. do not use the generic mechanism at all. */
- FULL_BUILTIN_STACK_CHECK
-};
extern enum stack_check_type flag_stack_check;
/* Returns TRUE if generated code should match ABI version N or
#define abi_version_at_least(N) \
(flag_abi_version == 0 || flag_abi_version >= (N))
-/* Return whether the function should be excluded from
- instrumentation. */
-extern bool flag_instrument_functions_exclude_p (tree fndecl);
-
-/* 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) \
/* True if pointer types have undefined overflow. */
#define POINTER_TYPE_OVERFLOW_UNDEFINED (flag_strict_overflow)
-/* 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
-};
-
/* 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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