/* Compilation switch flag definitions for GNU CC.
- Copyright (C) 1987, 88, 94-98, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1988, 1994, 1995, 1996, 1997, 1998, 1999, 2000
+ Free Software Foundation, Inc.
This file is part of GNU CC.
Boston, MA 02111-1307, USA. */
/* Name of the input .c file being compiled. */
-extern char *main_input_filename;
+extern const char *main_input_filename;
enum debug_info_type
{
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 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_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;
+extern int 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;
+/* 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;
+
/* Nonzero if generating code to do profiling. */
extern int profile_flag;
extern int flag_fast_math;
+/* 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, unless overridden by flag_fast_math. */
+
+extern int flag_errno_math;
+
+/* 0 means straightforward implementation of complex divide acceptable.
+ 1 means wide ranges of inputs must work for complex divide.
+ 2 means C9X-like requirements for complex divide (not yet implemented). */
+
+extern int flag_complex_divide_method;
+
/* Nonzero means to run loop optimizations twice. */
extern int flag_rerun_loop_opt;
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:
extern int flag_schedule_speculative;
extern int flag_schedule_speculative_load;
extern int flag_schedule_speculative_load_dangerous;
-#endif /* HAIFA */
/* flag_on_branch_count_reg means try to replace add-1,compare,branch tupple
by a cheaper branch, on a count register. */
extern int flag_new_exceptions;
+/* Nonzero means generate frame unwind info table when supported */
+
+extern int flag_unwind_tables;
+
/* Nonzero means don't place uninitialized global data in common storage
by default. */
if alias analysis (in general) is enabled. */
extern int flag_strict_aliasing;
-/* Emit code to check for stack overflow; also may cause large objects
- to be allocated dynamically. */
+/* 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. */
/* 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;
+
+/* -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 Java: defaults to on.
+ For Fortran: defaults to off.
+ For CHILL: defaults to off. */
+extern int flag_bounds_check;
+
+/* 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 can_reach_end;
-/* Nonzero if function being compiled receives nonlocal gotos
- from nested functions. */
-
-extern int current_function_has_nonlocal_label;
-
-/* Nonzero if function being compiled has nonlocal gotos to parent
- function. */
-
-extern int current_function_has_nonlocal_goto;
-
-/* Nonzero if this function has a computed goto.
-
- It is computed during find_basic_blocks or during stupid life
- analysis. */
-
-extern int current_function_has_computed_jump;
-
/* Nonzero if GCC must add code to check memory access (used by Checker). */
extern int flag_check_memory_usage;
flag_check_memory_usage). */
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;
/* Value of the -G xx switch, and whether it was passed or not. */
extern int g_switch_value;
extern int g_switch_set;
+/* Value of the -finline-limit flag. */
+
+extern int inline_max_insns;
+
+/* 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_jumps;
+extern int align_jumps_log;
+extern int align_labels;
+extern int align_labels_log;
+extern int align_functions;
+extern int align_functions_log;
+
/* Nonzero if we dump in VCG format, not plain text. */
extern int dump_for_graph;
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