From: Richard Stallman Date: Fri, 17 Jan 1992 21:47:59 +0000 (+0000) Subject: Initial revision X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f7a296659959fcfde5db65fa71da64123431d636;p=gcc.git Initial revision From-SVN: r199 --- diff --git a/gcc/flags.h b/gcc/flags.h new file mode 100644 index 00000000000..c1a04f0209e --- /dev/null +++ b/gcc/flags.h @@ -0,0 +1,312 @@ +/* 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 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. + +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; + +enum debug_info_type +{ + NO_DEBUG, /* Write no debug info. */ + DBX_DEBUG, /* Write BSD .stabs for DBX (using dbxout.c). */ + SDB_DEBUG, /* Write COFF for (old) SDB (using sdbout.c). */ + DWARF_DEBUG /* Write Dwarf debug info (using dwarfout.c). */ +}; + +/* Specify which kind of debugging info to generate. */ +extern enum debug_info_type write_symbols; + +enum debug_info_level +{ + 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_VERBOSE /* Write normal info plus #define/#undef info. */ +}; + +/* Specify how much debugging info to generate. */ +extern enum debug_info_level debug_info_level; + +#ifdef DBX_DEBUGGING_INFO +/* Nonzero means use GDB-only extensions of DBX format. */ +extern int use_gdb_dbx_extensions; +#endif + +/* Nonzero means do optimizations. -opt. */ + +extern int optimize; + +/* 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; + +/* 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 to warn about variables used before they are initialized. */ + +extern int warn_uninitialized; + +/* 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 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; + +/* 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 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; + +/* 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. */ + +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; + +/* Temporarily suppress certain warnings. + This is set while reading code from a system header file. */ + +extern int in_system_header; + +/* Nonzero for -dp: annotate the assembly with a comment describing the + pattern and alternative used. */ + +extern int flag_print_asm_name; + +/* 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 enables strength-reduction in loop.c. */ + +extern int flag_strength_reduce; + +/* Nonzero enables loop unrolling in unroll.c. Only loops for which the + number of iterations can be calculated at compile-time (UNROLL_COMPLETELY, + UNROLL_MODULO) or at run-time (preconditioned to be UNROLL_MODULO) are + unrolled. */ + +extern int flag_unroll_loops; + +/* Nonzero enables loop unrolling in unroll.c. All loops are unrolled. + This is generally not a win. */ + +extern int flag_unroll_all_loops; + +/* Nonzero for -fcse-follow-jumps: + have cse follow jumps to do a more extensive job. */ + +extern int flag_cse_follow_jumps; + +/* Nonzero for -fexpensive-optimizations: + perform miscellaneous relatively-expensive optimizations. */ +extern int flag_expensive_optimizations; + +/* 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; + +/* 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 means that functions declared `inline' will be treated + as `static'. Prevents generation of zillions of copies of unused + static inline functions; instead, `inlines' are written out + only when actually used. Used in conjunction with -g. Also + does the right thing with #pragma interface. */ + +extern int flag_no_inline; + +/* Nonzero if we are only using compiler to check syntax errors. */ + +extern int flag_syntax_only; + +/* Nonzero means we should save auxilliary info into a .X file. */ + +extern int flag_gen_aux_info; + +/* Nonzero means make the text shared if supported. */ + +extern int flag_shared_data; + +/* flag_schedule_insns means schedule insns within basic blocks (before + local_alloc). + flag_schedule_insns_after_reload means schedule insns after + global_alloc. */ + +extern int flag_schedule_insns; +extern int flag_schedule_insns_after_reload; + +/* 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. */ + +extern int flag_pretend_float; + +/* 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. */ + +extern int flag_pic; + +/* Nonzero means place uninitialized global data in the bss section. */ + +extern int flag_no_common; + +/* -finhibit-size-directive inhibits output of .size for ELF. + This is used only for compiling crtstuff.c, + and it may be extended to other effects + needed for crtstuff.c on other systems. */ +extern int flag_inhibit_size_directive; + +/* -fgnu-linker specifies use of the GNU linker for initializations. + -fno-gnu-linker says that collect will be used. */ +extern int flag_gnu_linker; + +/* Other basic status info about current function. */ + +/* 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; + +/* Set nonzero if jump_optimize finds that control falls through + at the end of the function. */ + +extern int can_reach_end; + +/* Nonzero if function being compiled receives nonlocal gotos + from nested functions. */ + +extern int current_function_has_nonlocal_label; +