/* 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.
extern int optimize_size;
-/* Do print extra warnings (such as for uninitialized variables).
- -W/-Wextra. */
+/* 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 extra_warnings;
+extern bool in_lto_p;
-/* Nonzero to warn about unused variables, functions et.al. Use
- set_Wunused() to update the -Wunused-* flags that correspond to the
- -Wunused option. */
+/* Nonzero if we should write GIMPLE bytecode for link-time optimization. */
-extern void set_Wunused (int setting);
+extern int flag_generate_lto;
-/* Used to set the level of -Wstrict-aliasing, when no level is specified.
+/* 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.
+ -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 bool warn_frame_larger_than;
extern HOST_WIDE_INT frame_larger_than_size;
-/* Temporarily suppress certain warnings.
- This is set while reading code from a system header file. */
-
-extern int in_system_header;
-
/* Nonzero for -dp: annotate the assembly with a comment describing the
pattern and alternative used. */
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;
extern int flag_dump_unnumbered;
+/* True if printing into -fdump-final-insns= dump. */
+
+extern bool final_insns_dump_p;
+
/* Nonzero means change certain warnings into errors.
Usually these are warnings about failure to conform to some standard. */
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. */
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'.
+/* 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;
+
+/* 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. */
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
greater is in use. */
instrumentation. */
extern bool flag_instrument_functions_exclude_p (tree fndecl);
-/* Emit warning if the function call is disallowed under
- -Wdisallowed-function-list=... */
-extern void warn_if_disallowed_function_p (const_tree fncall);
-
-/* True, if the -Wdisallowed-function-list=... option has been specified. */
-extern bool warn_disallowed_functions;
-
-/* 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) \
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