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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;
-