213 lines
6.0 KiB
C
213 lines
6.0 KiB
C
/* Compilation switch flag definitions for GNU CC.
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Copyright (C) 1987, 1988 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* Name of the input .c file being compiled. */
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extern char *main_input_filename;
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/* 1 => write gdb debugging output (using symout.c).
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2 => write dbx debugging output (using dbxout.c).
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3 => write sdb debugging output (using sdbout.c). */
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enum debugger { NO_DEBUG = 0, GDB_DEBUG = 1, DBX_DEBUG = 2, SDB_DEBUG = 3,
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EXTENDED_DBX_DEBUG = 4, LINENO_DEBUG };
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extern enum debugger write_symbols;
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/* Nonzero means use GDB-only extensions of DBX format. */
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extern int use_gdb_dbx_extensions;
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/* Nonzero means do optimizations. -opt. */
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extern int optimize;
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/* Nonzero means do stupid register allocation. -noreg.
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Currently, this is 1 if `optimize' is 0. */
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extern int obey_regdecls;
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/* Don't print functions as they are compiled and don't print
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times taken by the various passes. -quiet. */
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extern int quiet_flag;
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/* Don't print warning messages. -w. */
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extern int inhibit_warnings;
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/* Do print extra warnings (such as for uninitialized variables). -W. */
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extern int extra_warnings;
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/* Nonzero to warn about unused local variables. */
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extern int warn_unused;
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/* Nonzero means warn about all declarations which shadow others. */
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extern int warn_shadow;
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/* Warn if a switch on an enum fails to have a case for every enum value. */
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extern int warn_switch;
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/* Warn if a type conversion is done that might have confusing results. */
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extern int warn_conversion;
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/* Nonzero means warn about any identifiers that match in the first N
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characters. The value N is in `id_clash_len'. */
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extern int warn_id_clash;
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extern int id_clash_len;
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/* Nonzero means warn if inline function is too large. */
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extern int warn_inline;
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/* Nonzero if generating code to do profiling. */
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extern int profile_flag;
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/* Nonzero if generating code to do profiling on the basis of basic blocks. */
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extern int profile_block_flag;
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/* Nonzero for -pedantic switch: warn about anything
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that standard C or C++ forbids. */
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extern int pedantic;
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/* Now the symbols that are set with `-f' switches. */
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/* Nonzero means `char' should be signed. */
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extern int flag_signed_char;
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/* Nonzero means give an enum type only as many bytes as it needs. */
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extern int flag_short_enums;
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/* Nonzero for -fcaller-saves: allocate values in regs that need to
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be saved across function calls, if that produces overall better code.
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Optional now, so people can test it. */
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extern int flag_caller_saves;
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/* Nonzero for -fpcc-struct-return: return values the same way PCC does. */
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extern int flag_pcc_struct_return;
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/* Nonzero for -fforce-mem: load memory value into a register
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before arithmetic on it. This makes better cse but slower compilation. */
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extern int flag_force_mem;
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/* Nonzero for -fforce-addr: load memory address into a register before
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reference to memory. This makes better cse but slower compilation. */
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extern int flag_force_addr;
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/* Nonzero for -fdefer-pop: don't pop args after each function call;
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instead save them up to pop many calls' args with one insns. */
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extern int flag_defer_pop;
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/* Nonzero for -ffloat-store: don't allocate floats and doubles
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in extended-precision registers. */
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extern int flag_float_store;
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/* Nonzero for -fcombine-regs:
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allow instruction combiner to combine an insn
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that just copies one reg to another. */
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extern int flag_combine_regs;
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/* Nonzero enables strength-reduction in loop.c. */
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extern int flag_strength_reduce;
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/* Nonzero for -fcse-follow-jumps:
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have cse follow jumps to do a more extensive job. */
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extern int flag_cse_follow_jumps;
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/* Nonzero for -fwritable-strings:
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store string constants in data segment and don't uniquize them. */
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extern int flag_writable_strings;
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/* Nonzero means don't put addresses of constant functions in registers.
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Used for compiling the Unix kernel, where strange substitutions are
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done on the assembly output. */
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extern int flag_no_function_cse;
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/* Nonzero for -fomit-frame-pointer:
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don't make a frame pointer in simple functions that don't require one. */
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extern int flag_omit_frame_pointer;
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/* Nonzero to inhibit use of define_optimization peephole opts. */
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extern int flag_no_peephole;
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/* Nonzero means all references through pointers are volatile. */
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extern int flag_volatile;
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/* Nonzero means make functions that look like good inline candidates
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go inline. */
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extern int flag_inline_functions;
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/* Nonzero for -fkeep-inline-functions: even if we make a function
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go inline everywhere, keep its defintion around for debugging
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purposes. */
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extern int flag_keep_inline_functions;
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/* Nonzero if we are only using compiler to check syntax errors. */
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extern int flag_syntax_only;
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/* Nonzero means make the text shared if supported. */
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extern int flag_shared_data;
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/* Nonzero means put things in delayed-branch slots if supported. */
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extern int flag_delayed_branch;
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/* Nonzero means do basic-block instruction scheduling. */
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extern int flag_schedule_insns;
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/* Other basic status info about current function. */
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/* Nonzero means current function must be given a frame pointer.
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Set in stmt.c if anything is allocated on the stack there.
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Set in reload1.c if anything is allocated on the stack there. */
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extern int frame_pointer_needed;
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/* Nonzero if function being compiled receives nonlocal gotos
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from nested functions. */
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extern int current_function_has_nonlocal_label;
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