/* Compilation switch flag definitions for GCC.
- Copyright (C) 1987, 1988, 1994, 1995, 1996, 1997, 1998, 1999, 2000
+ Copyright (C) 1987, 1988, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002,
+ 2003
Free Software Foundation, Inc.
This file is part of GCC.
#ifndef GCC_FLAGS_H
#define GCC_FLAGS_H
-/* Name of the input .c file being compiled. */
-extern const char *main_input_filename;
-
enum debug_info_type
{
NO_DEBUG, /* Write no debug info. */
/* 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. */
/* Nonzero means use GNU-only extensions in the generated symbolic
debugging information. */
-extern int use_gnu_debug_info_extensions;
+extern bool use_gnu_debug_info_extensions;
+
+/* Nonzero means emit debugging information only for symbols which are used. */
+extern int flag_debug_only_used_symbols;
/* Nonzero means do optimizations. -opt. */
extern int quiet_flag;
-/* Print times taken by the various passes. -ftime-report. */
-
-extern int time_report;
-
/* Print memory still in use at end of compilation (which may have little
to do with peak memory consumption). -fmem-report. */
/* Don't print warning messages. -w. */
-extern int inhibit_warnings;
+extern bool inhibit_warnings;
/* Don't suppress warnings from system headers. -Wsystem-headers. */
-extern int warn_system_headers;
+extern bool warn_system_headers;
-/* Do print extra warnings (such as for uninitialized variables). -W. */
+/* Do print extra warnings (such as for uninitialized variables).
+ -W/-Wextra. */
-extern int extra_warnings;
+extern bool extra_warnings;
+
+/* If -Werror. */
+
+extern bool warnings_are_errors;
/* Nonzero to warn about unused variables, functions et.al. Use
set_Wunused() to update the -Wunused-* flags that correspond to the
-Wunused option. */
-extern void set_Wunused PARAMS ((int setting));
+extern void set_Wunused (int setting);
-extern int warn_unused_function;
-extern int warn_unused_label;
-extern int warn_unused_parameter;
-extern int warn_unused_variable;
-extern int warn_unused_value;
+extern bool warn_unused_function;
+extern bool warn_unused_label;
+extern bool warn_unused_parameter;
+extern bool warn_unused_variable;
+extern bool warn_unused_value;
/* Nonzero to warn about code which is never reached. */
-extern int warn_notreached;
+extern bool warn_notreached;
/* Nonzero means warn if inline function is too large. */
-extern int warn_inline;
+extern bool warn_inline;
/* Nonzero to warn about variables used before they are initialized. */
extern int warn_uninitialized;
-/* Zero if unknown pragmas are ignored
- One if the compiler should warn about an unknown pragma not in
- a system include file.
- Greater than one if the compiler should warn for all unknown
- pragmas. */
+/* Nonzero means warn about all declarations which shadow others. */
-extern int warn_unknown_pragmas;
+extern bool warn_shadow;
-/* Nonzero means warn about all declarations which shadow others. */
+/* Warn if a switch on an enum, that does not have a default case,
+ fails to have a case for every enum value. */
-extern int warn_shadow;
+extern bool warn_switch;
-/* Warn if a switch on an enum fails to have a case for every enum value. */
+/* Warn if a switch does not have a default case. */
-extern int warn_switch;
+extern bool warn_switch_default;
+
+/* Warn if a switch on an enum fails to have a case for every enum
+ value (regardless of the presence or otherwise of a default case). */
+
+extern bool warn_switch_enum;
/* Nonzero means warn about function definitions that default the return type
or that use a null return and have a return-type other than void. */
/* Warn about functions which might be candidates for attribute noreturn. */
-extern int warn_missing_noreturn;
+extern bool warn_missing_noreturn;
/* Nonzero means warn about pointer casts that increase the required
alignment of the target type (and might therefore lead to a crash
due to a misaligned access). */
-extern int warn_cast_align;
+extern bool warn_cast_align;
/* 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 int warn_larger_than;
+extern bool warn_larger_than;
extern HOST_WIDE_INT larger_than_size;
/* Warn if a function returns an aggregate,
since there are often incompatible calling conventions for doing this. */
-extern int warn_aggregate_return;
+extern bool warn_aggregate_return;
/* Warn if packed attribute on struct is unnecessary and inefficient. */
-extern int warn_packed;
+extern bool warn_packed;
/* Warn when gcc pads a structure to an alignment boundary. */
-extern int warn_padded;
+extern bool warn_padded;
/* Warn when an optimization pass is disabled. */
-extern int warn_disabled_optimization;
+extern bool warn_disabled_optimization;
+
+/* Nonzero means warn about uses of __attribute__((deprecated))
+ declarations. */
+
+extern bool warn_deprecated_decl;
+
+/* Nonzero means warn about constructs which might not be strict
+ aliasing safe. */
+
+extern bool warn_strict_aliasing;
/* Nonzero if generating code to do profiling. */
extern int profile_arc_flag;
+/* Nonzero if value profile should be measured. */
+
+extern int flag_profile_values;
+
/* Nonzero if generating info for gcov to calculate line test coverage. */
extern int flag_test_coverage;
extern int flag_reorder_blocks;
+/* Nonzero if functions should be reordered. */
+
+extern int flag_reorder_functions;
+
/* Nonzero if registers should be renamed. */
extern int flag_rename_registers;
UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are
unrolled. */
-extern int flag_unroll_loops;
+extern int flag_old_unroll_loops;
/* Nonzero enables loop unrolling in unroll.c. All loops are unrolled.
This is generally not a win. */
-extern int flag_unroll_all_loops;
+extern int flag_old_unroll_all_loops;
/* Nonzero forces all invariant computations in loops to be moved
outside the loop. */
extern int flag_no_peephole;
-/* Nonzero means all references through pointers are volatile. */
-
-extern int flag_volatile;
-
-/* Nonzero means treat all global and extern variables as volatile. */
-
-extern int flag_volatile_global;
-
-/* Nonzero means treat all static variables as volatile. */
-
-extern int flag_volatile_static;
-
/* Nonzero allows GCC to optimize sibling and tail recursive calls. */
extern int flag_optimize_sibling_calls;
extern int flag_unsafe_math_optimizations;
+/* Nonzero means that no NaNs or +-Infs are expected. */
+
+extern int flag_finite_math_only;
+
/* Zero means that floating-point math operations cannot generate a
(user-visible) trap. This is the case, for example, in nonstop
IEEE 754 arithmetic. */
extern int flag_trapping_math;
+/* Nonzero means disable transformations that assume default floating
+ point rounding behavior. */
+
+extern int flag_rounding_math;
+
/* 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 divide (not yet implemented). */
extern int flag_no_inline;
+/* 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 flag_syntax_only;
extern int flag_schedule_insns;
extern int flag_schedule_insns_after_reload;
+extern int flag_sched2_use_superblocks;
+extern int flag_sched2_use_traces;
/* The following flags have effect only for scheduling before register
allocation:
- flag_schedule_interblock means schedule insns accross basic blocks.
+ flag_schedule_interblock means schedule insns across basic blocks.
flag_schedule_speculative means allow speculative motion of non-load insns.
flag_schedule_speculative_load means allow speculative motion of some
load insns.
extern int flag_schedule_speculative_load;
extern int flag_schedule_speculative_load_dangerous;
+/* The following flags have an effect during scheduling after register
+ allocation:
+
+ sched_stalled_insns means that insns can be moved prematurely from the queue
+ of stalled insns into the ready list.
+
+ sched_stalled_insns_dep controls how many recently scheduled cycles will
+ be examined for a dependency on a stalled insn that is candidate for
+ premature removal from the queue of stalled insns into the ready list (has
+ an effect only if the flag 'sched_stalled_insns' is set). */
+
+extern int flag_sched_stalled_insns;
+extern int flag_sched_stalled_insns_dep;
+
/* flag_branch_on_count_reg means try to replace add-1,compare,branch tupple
by a cheaper branch, on a count register. */
extern int flag_branch_on_count_reg;
extern int flag_dump_unnumbered;
-/* Nonzero means pretend it is OK to examine bits of target floats,
- even if that isn't true. The resulting code will have incorrect constants,
- but the same series of instructions that the native compiler would make. */
-
-extern int flag_pretend_float;
-
/* Nonzero means change certain warnings into errors.
Usually these are warnings about failure to conform to some standard. */
extern int flag_pedantic_errors;
-/* Nonzero means generate position-independent code.
- This is not fully implemented yet. */
+/* Nonzero means generate position-independent code. 1 vs 2 for a
+ target-dependent "small" or "large" mode. */
extern int flag_pic;
+/* Nonzero if we are compiling position independent code for executable.
+ 1 vs 2 for a target-dependent "small" or "large" mode. */
+
+extern int flag_pie;
+
+/* Nonzero if we are compiling code for a shared library, zero for
+ executable. */
+
+extern int flag_shlib;
+
/* Nonzero means generate extra code for exception handling and enable
exception handling. */
extern int flag_exceptions;
-/* Nonzero means generate frame unwind info table when supported */
+/* Nonzero means generate frame unwind info table when supported. */
extern int flag_unwind_tables;
-/* Nonzero means generate frame unwind info table exact at each insn boundary */
+/* Nonzero means generate frame unwind info table exact at each insn boundary. */
extern int flag_asynchronous_unwind_tables;
extern int flag_dump_rtl_in_asm;
+/* Greater than zero if user symbols are prepended by a leading underscore
+ in generated assembly code. */
+extern int flag_leading_underscore;
+
/* -fgnu-linker specifies use of the GNU linker for initializations.
-fno-gnu-linker says that collect will be used. */
extern int flag_gnu_linker;
/* Perform a peephole pass before sched2. */
extern int flag_peephole2;
-/* Try to guess branch probablities. */
+/* Try to guess branch probabilities. */
extern int flag_guess_branch_prob;
-/* -fbounded-pointers causes gcc to compile pointers as composite
- objects occupying three words: the pointer value, the base address
- of the referent object, and the address immediately beyond the end
- of the referent object. The base and extent allow us to perform
- runtime bounds checking. -fbounded-pointers implies -fcheck-bounds. */
-extern int flag_bounded_pointers;
-
/* -fcheck-bounds causes gcc to generate array bounds checks.
- For C, C++: defaults to value of flag_bounded_pointers.
- For ObjC: defaults to off.
+ For C, C++ and ObjC: defaults off.
For Java: defaults to on.
- For Fortran: defaults to off.
- For CHILL: defaults to off. */
+ For Fortran: defaults to off. */
extern int flag_bounds_check;
/* This will attempt to merge constant section constants, if 1 only
for PLUS / SUB / MULT. */
extern int flag_trapv;
+/* Nonzero if the signed arithmetic overflow should wrap around. */
+extern int flag_wrapv;
+
+/* 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 int g_switch_value;
-extern int g_switch_set;
+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'.
extern int align_functions;
extern int align_functions_log;
+/* 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;
+
/* Nonzero if we dump in VCG format, not plain text. */
extern int dump_for_graph;
extern int flag_no_ident;
+/* Nonzero means perform global CSE. */
+
+extern int flag_gcse;
+
/* Nonzero if we want to perform enhanced load motion during gcse. */
extern int flag_gcse_lm;
extern int flag_gcse_sm;
+/* Nonzero if we want to perform redundant load-after-store elimination
+ in gcse. */
+
+extern int flag_gcse_las;
+
+/* Nonzero if value histograms should be used to optimize code. */
+extern int flag_value_profile_transformations;
+
+/* Perform branch target register optimization before prologue / epilogue
+ threading. */
+
+extern int flag_branch_target_load_optimize;
+
+/* Perform branch target register optimization after prologue / epilogue
+ threading and jump2. */
+
+extern int flag_branch_target_load_optimize2;
+
/* Nonzero means we should do dwarf2 duplicate elimination. */
extern int flag_eliminate_dwarf2_dups;
-/* Non-zero means to collect statistics which might be expensive
+/* Nonzero means we should do unused type elimination. */
+
+extern int flag_eliminate_unused_debug_types;
+
+/* Nonzero means to collect statistics which might be expensive
and to print them when we are done. */
extern int flag_detailed_statistics;
/* Nonzero means enable synchronous exceptions for non-call instructions. */
extern int flag_non_call_exceptions;
+/* Nonzero means put zero initialized data in the bss section. */
+extern int flag_zero_initialized_in_bss;
+
+/* Nonzero means disable transformations observable by signaling NaNs. */
+extern int flag_signaling_nans;
+
+extern int flag_unit_at_a_time;
+
+extern int flag_web;
+
+/* A string that's used when a random name is required. NULL means
+ to make it really random. */
+
+extern const char *flag_random_seed;
+
+/* 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 x, 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_unsafe_math_optimizations)
+
+/* 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)
+
#endif /* ! GCC_FLAGS_H */