-/* Compilation switch flag definitions for GNU CC.
- Copyright (C) 1987, 88, 94-97, 1998 Free Software Foundation, Inc.
+/* Compilation switch flag definitions for GCC.
+ Copyright (C) 1987, 1988, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002
+ Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC 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 version.
+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
+version.
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+along with GCC; see the file COPYING. If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA. */
+
+#ifndef GCC_FLAGS_H
+#define GCC_FLAGS_H
/* Name of the input .c file being compiled. */
-extern char *main_input_filename;
+extern const char *main_input_filename;
enum debug_info_type
{
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). */
+ 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. */
{
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_NORMAL, /* Write info for all declarations (and line table). */
DINFO_LEVEL_VERBOSE /* Write normal info plus #define/#undef info. */
};
extern int optimize_size;
-/* Nonzero means do stupid register allocation. -noreg.
- Currently, this is 1 if `optimize' is 0. */
-
-extern int obey_regdecls;
-
/* 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. */
+
+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. */
+
+extern int mem_report;
+
/* Don't print warning messages. -w. */
extern int inhibit_warnings;
+/* Don't suppress warnings from system headers. -Wsystem-headers. */
+
+extern int warn_system_headers;
+
/* Do print extra warnings (such as for uninitialized variables). -W. */
extern int extra_warnings;
-/* Nonzero to warn about unused local variables. */
+/* 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;
-extern int warn_unused;
+/* 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_unknown_pragmas;
-/* Nonzero means warn about all declarations which shadow others. */
+/* Nonzero means warn about all declarations which shadow others. */
extern int warn_shadow;
-/* Warn if a switch on an enum fails to have a case for every enum value. */
+/* 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;
-/* Nonzero means warn that dbx info for template class methods isn't fully
- supported yet. */
-
-extern int warn_template_debugging;
-
-/* Nonzero means warn about any identifiers that match in the first N
- characters. The value N is in `id_clash_len'. */
-
-extern int warn_id_clash;
-extern unsigned id_clash_len;
-
/* 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 unsigned larger_than_size;
+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;
-/* Nonzero if generating code to do profiling. */
+/* Warn if packed attribute on struct is unnecessary and inefficient. */
-extern int profile_flag;
+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. */
-/* Nonzero if generating code to do profiling on the basis of basic blocks. */
+extern int warn_disabled_optimization;
-extern int profile_block_flag;
+/* Nonzero means warn about uses of __attribute__((deprecated))
+ declarations. */
-/* Nonzero if generating code to profile program flow graph arcs. */
+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. */
+/* 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. */
+/* 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 flag_unroll_all_loops;
/* Nonzero forces all invariant computations in loops to be moved
- outside the loop. */
+ 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. */
+ strength reduced. */
extern int flag_reduce_all_givs;
extern int flag_volatile;
-/* Nonzero means treat all global and extern variables as global. */
+/* Nonzero means treat all global and extern variables as volatile. */
extern int flag_volatile_global;
-/* Nonzero allows GCC to violate some IEEE or ANSI rules regarding math
- operations in the interest of optimization. For example it allows
- GCC to assume arguments to sqrt are nonnegative numbers, allowing
- faster code for sqrt to be generated. */
+/* Nonzero means treat all static variables as volatile. */
-extern int flag_fast_math;
+extern int flag_volatile_static;
+
+/* 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;
/* Nonzero means to run loop optimizations twice. */
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;
-#ifdef HAIFA
/* 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;
-/* flag_on_branch_count_reg means try to replace add-1,compare,branch tupple
- by a cheaper branch, on a count register. */
+/* 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;
-#endif /* HAIFA */
+/* This option is set to 1 on -fsingle-precision-constant option which is
+ used to convert the floating point constants to single precision
+ constants. */
-/* Nonzero means put things in delayed-branch slots if supported. */
+extern int flag_single_precision_constant;
+
+/* Nonzero means put things in delayed-branch slots if supported. */
extern int flag_delayed_branch;
-/* 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. */
+/* Nonzero means suppress output of instruction numbers and line number
+ notes in debugging dumps. */
-extern int flag_pretend_float;
+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;
-/* 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;
extern int flag_exceptions;
-/* Nonzero means use the new model for exception handling. Replaces
- -DNEW_EH_MODEL as a compile option. */
+/* Nonzero means generate frame unwind info table when supported */
+
+extern int flag_unwind_tables;
-extern int flag_new_exceptions;
+/* Nonzero means generate frame unwind info table exact at each insn boundary */
+
+extern int flag_asynchronous_unwind_tables;
/* Nonzero means don't place uninitialized global data in common storage
by default. */
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
extern int flag_debug_asm;
+extern int flag_dump_rtl_in_asm;
+
/* -fgnu-linker specifies use of the GNU linker for initializations.
-fno-gnu-linker says that collect will be used. */
extern int flag_gnu_linker;
The value is ignored if flag_alias_check is 0. */
extern int flag_argument_noalias;
-/* Emit code to check for stack overflow; also may cause large objects
- to be allocated dynamically. */
+/* 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 probablities. */
+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 flag_renumber_insns;
\f
/* Other basic status info about current function. */
extern int frame_pointer_needed;
-/* Set nonzero if jump_optimize finds that control falls through
- at the end of the function. */
+/* Nonzero if the generated code should trap on signed overflow
+ for PLUS / SUB / MULT. */
+extern int flag_trapv;
-extern int can_reach_end;
+/* Value of the -G xx switch, and whether it was passed or not. */
+extern int g_switch_value;
+extern int g_switch_set;
-/* Nonzero if function being compiled receives nonlocal gotos
- from nested functions. */
+/* 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
+ 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;
+
+/* Selection of the graph form. */
+enum graph_dump_types
+{
+ no_graph = 0,
+ vcg
+};
+extern enum graph_dump_types graph_dump_format;
-extern int current_function_has_nonlocal_label;
+/* 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. */
-/* Nonzero if function being compiled has nonlocal gotos to parent
- function. */
+extern int flag_no_ident;
-extern int current_function_has_nonlocal_goto;
+/* Nonzero if we want to perform enhanced load motion during gcse. */
-/* Nonzero if this function has a computed goto.
+extern int flag_gcse_lm;
- It is computed during find_basic_blocks or during stupid life
- analysis. */
+/* Nonzero if we want to perform store motion after gcse. */
-extern int current_function_has_computed_jump;
+extern int flag_gcse_sm;
-/* Nonzero if GCC must add code to check memory access (used by Checker). */
-extern int flag_check_memory_usage;
+/* Nonzero means we should do dwarf2 duplicate elimination. */
-/* Nonzero if GCC must prefix function names (used with
- flag_check_memory_usage). */
+extern int flag_eliminate_dwarf2_dups;
-extern int flag_prefix_function_name;
-/* Nonzero if the current function is a thunk, so we should try to cut
- corners where we can. */
-extern int current_function_is_thunk;
+/* Nonzero means to collect statistics which might be expensive
+ and to print them when we are done. */
+extern int flag_detailed_statistics;
-/* Value of the -G xx switch, and whether it was passed or not. */
-extern int g_switch_value;
-extern int g_switch_set;
+/* 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;
+
+/* 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
+ postive 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_unsafe_math_optimizations)
+
+#endif /* ! GCC_FLAGS_H */
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