/* Compilation switch flag definitions for GCC.
- Copyright (C) 1987, 1988, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002
+ Copyright (C) 1987, 1988, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002,
+ 2003, 2004, 2005
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;
+#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). */
- DWARF_DEBUG, /* Write Dwarf debug info (using dwarfout.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). */
/* 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 do optimizations. -opt. */
-
-extern int optimize;
-
-/* Nonzero means optimize for size. -Os. */
-
-extern int optimize_size;
-
-/* Don't print functions as they are compiled and don't print
- times taken by the various passes. -quiet. */
-
-extern int quiet_flag;
-
-/* Print times taken by the various passes. -ftime-report. */
+/* Enumerate visibility settings. */
+#ifndef SYMBOL_VISIBILITY_DEFINED
+#define SYMBOL_VISIBILITY_DEFINED
+enum symbol_visibility
+{
+ VISIBILITY_DEFAULT,
+ VISIBILITY_INTERNAL,
+ VISIBILITY_HIDDEN,
+ VISIBILITY_PROTECTED
+};
+#endif
-extern int time_report;
+/* The default visibility for all symbols (unless overridden). */
+extern enum symbol_visibility default_visibility;
-/* Print memory still in use at end of compilation (which may have little
- to do with peak memory consumption). -fmem-report. */
+struct visibility_flags
+{
+ unsigned inpragma : 1; /* True when in #pragma GCC visibility. */
+ unsigned inlines_hidden : 1; /* True when -finlineshidden in effect. */
+};
-extern int mem_report;
+/* Global visibility options. */
+extern struct visibility_flags visibility_options;
-/* Don't print warning messages. -w. */
+/* Nonzero means do optimizations. -opt. */
-extern int inhibit_warnings;
+extern int optimize;
-/* Don't suppress warnings from system headers. -Wsystem-headers. */
+/* Nonzero means optimize for size. -Os. */
-extern int warn_system_headers;
+extern int optimize_size;
/* Do print extra warnings (such as for uninitialized variables).
-W/-Wextra. */
-extern int extra_warnings;
+extern bool extra_warnings;
/* 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 int warn_unused_function;
-extern int warn_unused_label;
-extern int warn_unused_parameter;
-extern int warn_unused_variable;
-extern int warn_unused_value;
-
-/* Nonzero to warn about code which is never reached. */
-
-extern int warn_notreached;
-
-/* Nonzero means warn if inline function is too large. */
-
-extern int 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. */
-
-extern int warn_unknown_pragmas;
-
-/* Nonzero means warn about all declarations which shadow others. */
-
-extern int warn_shadow;
-
-/* 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_switch;
-
-/* Warn if a switch does not have a default case. */
-
-extern int 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 int 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. */
-
-extern int warn_return_type;
-
-/* Warn about functions which might be candidates for attribute noreturn. */
-
-extern int 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 void set_Wunused (int setting);
/* 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;
-
-/* Warn if packed attribute on struct is unnecessary and inefficient. */
-
-extern int warn_packed;
-
-/* Warn when gcc pads a structure to an alignment boundary. */
-
-extern int warn_padded;
-
-/* Warn when an optimization pass is disabled. */
-
-extern int warn_disabled_optimization;
-
-/* Nonzero means warn about uses of __attribute__((deprecated))
- declarations. */
-
-extern int warn_deprecated_decl;
-
/* Nonzero means warn about constructs which might not be strict
aliasing safe. */
extern int warn_strict_aliasing;
-/* Nonzero if generating code to do profiling. */
-
-extern int profile_flag;
-
-/* Nonzero if generating code to profile program flow graph arcs. */
-
-extern int profile_arc_flag;
-
-/* Nonzero if generating info for gcov to calculate line test coverage. */
-
-extern int flag_test_coverage;
-
-/* Nonzero indicates that branch taken probabilities should be calculated. */
-
-extern int flag_branch_probabilities;
-
-/* Nonzero if basic blocks should be reordered. */
-
-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;
-
-/* Nonzero for -pedantic switch: warn about anything
- that standard C forbids. */
-
-extern int pedantic;
-
/* Temporarily suppress certain warnings.
This is set while reading code from a system header file. */
extern int flag_signed_char;
-/* Nonzero means give an enum type only as many bytes as it needs. */
+/* 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 -fcaller-saves: allocate values in regs that need to
- be saved across function calls, if that produces overall better code.
- Optional now, so people can test it. */
-
-extern int flag_caller_saves;
-
/* Nonzero for -fpcc-struct-return: return values the same way PCC does. */
extern int flag_pcc_struct_return;
-/* Nonzero for -fforce-mem: load memory value into a register
- before arithmetic on it. This makes better cse but slower compilation. */
-
-extern int flag_force_mem;
-
-/* Nonzero for -fforce-addr: load memory address into a register before
- reference to memory. This makes better cse but slower compilation. */
-
-extern int flag_force_addr;
-
-/* Nonzero for -fdefer-pop: don't pop args after each function call;
- instead save them up to pop many calls' args with one insns. */
-
-extern int flag_defer_pop;
-
-/* Nonzero for -ffloat-store: don't allocate floats and doubles
- in extended-precision registers. */
-
-extern int flag_float_store;
-
-/* Nonzero enables strength-reduction in loop.c. */
-
-extern int flag_strength_reduce;
-
-/* Nonzero enables loop unrolling in unroll.c. Only loops for which the
- number of iterations can be calculated at compile-time (UNROLL_COMPLETELY,
- UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are
- unrolled. */
-
-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_old_unroll_all_loops;
-
-/* Nonzero forces all invariant computations in loops to be moved
- outside the loop. */
-
-extern int flag_move_all_movables;
-
-/* Nonzero enables prefetch optimizations for arrays in loops. */
-
-extern int flag_prefetch_loop_arrays;
-
-/* Nonzero forces all general induction variables in loops to be
- strength reduced. */
-
-extern int flag_reduce_all_givs;
-
-/* Nonzero for -fcse-follow-jumps:
- have cse follow jumps to do a more extensive job. */
-
-extern int flag_cse_follow_jumps;
-
-/* Nonzero for -fcse-skip-blocks:
- have cse follow a branch around a block. */
-
-extern int flag_cse_skip_blocks;
-
-/* Nonzero for -fexpensive-optimizations:
- perform miscellaneous relatively-expensive optimizations. */
-extern int flag_expensive_optimizations;
-
-/* Nonzero for -fwritable-strings:
- store string constants in data segment and don't uniquize them. */
-
-extern int flag_writable_strings;
-
-/* Nonzero means don't put addresses of constant functions in registers.
- Used for compiling the Unix kernel, where strange substitutions are
- done on the assembly output. */
-
-extern int flag_no_function_cse;
-
-/* Nonzero for -fomit-frame-pointer:
- don't make a frame pointer in simple functions that don't require one. */
-
-extern int flag_omit_frame_pointer;
-
-/* Nonzero to inhibit use of define_optimization peephole opts. */
-
-extern int flag_no_peephole;
-
-/* Nonzero allows GCC to optimize sibling and tail recursive calls. */
-
-extern int flag_optimize_sibling_calls;
-
-/* Nonzero means the front end generally wants `errno' maintained by math
- operations, like built-in SQRT. */
-
-extern int flag_errno_math;
-
-/* Nonzero means that unsafe floating-point math optimizations are allowed
- for the sake of speed. IEEE compliance is not guaranteed, and operations
- are allowed to assume that their arguments and results are "normal"
- (e.g., nonnegative for SQRT). */
-
-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;
-
/* 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_complex_divide_method;
+ 2 means C99-like requirements for complex multiply and divide. */
-/* Nonzero means to run loop optimizations twice. */
-
-extern int flag_rerun_loop_opt;
-
-/* Nonzero means make functions that look like good inline candidates
- go inline. */
-
-extern int flag_inline_functions;
-
-/* Nonzero for -fkeep-inline-functions: even if we make a function
- go inline everywhere, keep its definition around for debugging
- purposes. */
-
-extern int flag_keep_inline_functions;
-
-/* Nonzero means that functions declared `inline' will be treated
- as `static'. Prevents generation of zillions of copies of unused
- static inline functions; instead, `inlines' are written out
- only when actually used. Used in conjunction with -g. Also
- does the right thing with #pragma interface. */
-
-extern int flag_no_inline;
+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. */
/* Nonzero if we are only using compiler to check syntax errors. */
-extern int flag_syntax_only;
+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 make the text shared if supported. */
-
-extern int flag_shared_data;
-
-/* flag_schedule_insns means schedule insns within basic blocks (before
- local_alloc).
- flag_schedule_insns_after_reload means schedule insns after
- global_alloc. */
-
-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 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.
- flag_schedule_speculative_load_dangerous allows speculative motion of more
- load insns. */
-
-extern int flag_schedule_interblock;
-extern int flag_schedule_speculative;
-extern int flag_schedule_speculative_load;
-extern int flag_schedule_speculative_load_dangerous;
-
-/* 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;
-
-/* This option is set to 1 on -fsingle-precision-constant option which is
- used to convert the floating point constants to single precision
- constants. */
-
-extern int flag_single_precision_constant;
-
-/* Nonzero means put things in delayed-branch slots if supported. */
-
-extern int flag_delayed_branch;
-
/* Nonzero means suppress output of instruction numbers and line number
notes in debugging dumps. */
extern int flag_pedantic_errors;
-/* Nonzero means generate position-independent code. 1 vs 2 for a
- target-dependent "small" or "large" mode. */
-
-extern int flag_pic;
-
-/* Nonzero means generate extra code for exception handling and enable
- exception handling. */
-
-extern int flag_exceptions;
+/* Nonzero if we are compiling code for a shared library, zero for
+ executable. */
-/* 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 */
-
-extern int flag_asynchronous_unwind_tables;
-
-/* Nonzero means allow for forced unwinding. */
-
-extern int flag_forced_unwind_exceptions;
-
-/* Nonzero means don't place uninitialized global data in common storage
- by default. */
-
-extern int flag_no_common;
-
-/* -finhibit-size-directive inhibits output of .size for ELF.
- This is used only for compiling crtstuff.c,
- and it may be extended to other effects
- needed for crtstuff.c on other systems. */
-extern int flag_inhibit_size_directive;
-
-/* Nonzero means place each function into its own section on those platforms
- which support arbitrary section names and unlimited numbers of sections. */
-
-extern int flag_function_sections;
-
-/* ... and similar for data. */
-
-extern int flag_data_sections;
-
-/* -fverbose-asm causes extra commentary 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
- generated assembly code (perhaps while debugging the compiler itself).
- -fno-verbose-asm, the default, causes the extra information
- to not be added and is useful when comparing two assembler files. */
-
-extern int flag_verbose_asm;
+extern int flag_shlib;
/* -dA causes debug information to be produced in
the generated assembly code (to make it more readable). This option
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;
-
-/* Tag all structures with __attribute__(packed) */
-extern int flag_pack_struct;
-
-/* This flag is only tested if alias checking is enabled.
- 0 if pointer arguments may alias each other. True in C.
- 1 if pointer arguments may not alias each other but may alias
- global variables.
- 2 if pointer arguments may not alias each other and may not
- alias global variables. True in Fortran.
- The value is ignored if flag_alias_check is 0. */
-extern int flag_argument_noalias;
-
-/* Nonzero if we should do (language-dependent) alias analysis.
- Typically, this analysis will assume that expressions of certain
- types do not alias expressions of certain other types. Only used
- if alias analysis (in general) is enabled. */
-extern int flag_strict_aliasing;
-
-/* Emit code to probe the stack, to help detect stack overflow; also
- may cause large objects to be allocated dynamically. */
-extern int flag_stack_check;
-
-/* Do the full regmove optimization pass. */
-extern int flag_regmove;
-
-/* Instrument functions with calls at entry and exit, for profiling. */
-extern int flag_instrument_function_entry_exit;
-
-/* Perform a peephole pass before sched2. */
-extern int flag_peephole2;
-
-/* Try to guess branch probabilities. */
-extern int flag_guess_branch_prob;
-
-/* -fcheck-bounds causes gcc to generate array bounds checks.
- For C, C++ and ObjC: defaults off.
- For Java: defaults to on.
- For Fortran: defaults to off. */
-extern int flag_bounds_check;
-
-/* This will attempt to merge constant section constants, if 1 only
- string constants and constants from constant pool, if 2 also constant
- variables. */
-extern int flag_merge_constants;
-
/* If one, renumber instruction UIDs to reduce the number of
unused UIDs if there are a lot of instructions. If greater than
one, unconditionally renumber instruction UIDs. */
extern int frame_pointer_needed;
-/* Nonzero if the generated code should trap on signed overflow
- for PLUS / SUB / MULT. */
-extern int flag_trapv;
+/* 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'.
For each variable, there is an _log variant which is the power
of two not less than the variable, for .align output. */
-extern int align_loops;
extern int align_loops_log;
extern int align_loops_max_skip;
-extern int align_jumps;
extern int align_jumps_log;
extern int align_jumps_max_skip;
-extern int align_labels;
extern int align_labels_log;
extern int align_labels_max_skip;
-extern int align_functions;
extern int align_functions_log;
/* Like align_functions_log above, but used by front-ends to force the
};
extern enum graph_dump_types graph_dump_format;
-/* Nonzero means ignore `#ident' directives. 0 means handle them.
- On SVR4 targets, it also controls whether or not to emit a
- string identifying the compiler. */
-
-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;
-
-/* Nonzero if we want to perform store motion after gcse. */
-
-extern int flag_gcse_sm;
-
-
-/* Nonzero means we should do dwarf2 duplicate elimination. */
-
-extern int flag_eliminate_dwarf2_dups;
-
-/* 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 that we defer emitting functions until they are actually
+ used. */
+extern int flag_remove_unreachable_functions;
-/* Nonzero means disable transformations observable by signaling NaNs. */
-extern int flag_signaling_nans;
+/* Nonzero if we should track variables. */
+extern int flag_var_tracking;
-extern int flag_unit_at_a_time;
+/* 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;
/* A string that's used when a random name is required. NULL means
to make it really random. */
extern const char *flag_random_seed;
+/* 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 x, are not correct for NaN operands, and are normally
/* 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_unsafe_math_optimizations)
+ (MODE_HAS_SIGN_DEPENDENT_ROUNDING (MODE) && flag_rounding_math)
#endif /* ! GCC_FLAGS_H */