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/* Compilation switch flag definitions for GNU CC.
Copyright (C) 1987, 1988 Free Software Foundation, Inc.
This file is part of GNU CC.
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 1, 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.
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, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Name of the input .c file being compiled. */
extern char *main_input_filename;
/* 1 => write gdb debugging output (using symout.c).
2 => write dbx debugging output (using dbxout.c).
3 => write sdb debugging output (using sdbout.c). */
enum debugger { NO_DEBUG = 0, GDB_DEBUG = 1, DBX_DEBUG = 2, SDB_DEBUG = 3,
EXTENDED_DBX_DEBUG = 4 };
extern enum debugger write_symbols;
/* Nonzero means use GDB-only extensions of DBX format. */
extern int use_gdb_dbx_extensions;
/* Nonzero means do optimizations. -opt. */
extern int optimize;
/* Nonzero means do stupid register allocation. -noreg.
This and `optimize' are controlled by different switches in cc1,
but normally cc controls them both with the -O switch. */
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;
/* Don't print warning messages. -w. */
extern int inhibit_warnings;
/* Do print extra warnings (such as for uninitialized variables). -W. */
extern int extra_warnings;
/* Nonzero to warn about unused local variables. */
extern int warn_unused;
/* 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. */
extern int warn_switch;
/* 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 int id_clash_len;
/* Nonzero if generating code to do profiling. */
extern int profile_flag;
/* Nonzero if generating code to do profiling on the basis of basic blocks. */
extern int profile_block_flag;
/* Nonzero for -pedantic switch: warn about anything
that standard C forbids. */
extern int pedantic;
/* Now the symbols that are set with `-f' switches. */
/* Nonzero means `char' should be signed. */
extern int flag_signed_char;
/* Nonzero means give an enum type only as many bytes as it needs. */
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 for -fcombine-regs:
allow instruction combiner to combine an insn
that just copies one reg to another. */
extern int flag_combine_regs;
/* Nonzero enables strength-reduction in loop.c. */
extern int flag_strength_reduce;
/* 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;
/* This isn't a flag, but everyone who needs flag_omit_frame_pointer
also needs this.
Nonzero means current function must be given a frame pointer.
Set in stmt.c if anything is allocated on the stack there.
Set in reload1.c if anything is allocated on the stack there. */
extern int frame_pointer_needed;
/* Nonzero to inhibit use of define_optimization peephole opts. */
extern int flag_no_peephole;
/* Nonzero means all references through pointers are volatile. */
extern int flag_volatile;
/* 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 defintion around for debugging
purposes. */
extern int flag_keep_inline_functions;
/* Nonzero if we are only using compiler to check syntax errors. */
extern int flag_syntax_only;
/* Nonzero means make the text shared if supported. */
extern int flag_shared_data;
/* Nonzero means put things in delayed-branch slots if supported. */
extern int flag_delayed_branch;
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