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- /* Top level of GNU C compiler
- Copyright (C) 1987, 88, 89, 92, 93, 1994 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. */
-
-
- /* This is the top level of cc1/c++.
- It parses command args, opens files, invokes the various passes
- in the proper order, and counts the time used by each.
- Error messages and low-level interface to malloc also handled here. */
-
- #include "config.h"
- #ifdef __STDC__
- #include <stdarg.h>
- #else
- #include <varargs.h>
- #endif
- #include <stdio.h>
- #include <signal.h>
- #include <setjmp.h>
- #include <sys/types.h>
- #include <ctype.h>
- #include <sys/stat.h>
-
- #ifdef USG
- #undef FLOAT
- #include <sys/param.h>
- /* This is for hpux. It is a real screw. They should change hpux. */
- #undef FLOAT
- #include <sys/times.h>
- #include <time.h> /* Correct for hpux at least. Is it good on other USG? */
- #undef FFS /* Some systems define this in param.h. */
- #else
- #ifndef VMS
- #include <sys/time.h>
- #include <sys/resource.h>
- #endif
- #endif
-
- #include "input.h"
- #include "tree.h"
- /* #include "c-tree.h" */
- #include "rtl.h"
- #include "flags.h"
- #include "insn-attr.h"
- #include "defaults.h"
-
- #ifdef XCOFF_DEBUGGING_INFO
- #include "xcoffout.h"
- #endif
-
- #include "bytecode.h"
- #include "bc-emit.h"
-
- #ifdef VMS
- /* The extra parameters substantially improve the I/O performance. */
- static FILE *
- VMS_fopen (fname, type)
- char * fname;
- char * type;
- {
- if (strcmp (type, "w") == 0)
- return fopen (fname, type, "mbc=16", "deq=64", "fop=tef", "shr=nil");
- return fopen (fname, type, "mbc=16");
- }
- #define fopen VMS_fopen
- #endif
-
- #ifndef DEFAULT_GDB_EXTENSIONS
- #define DEFAULT_GDB_EXTENSIONS 1
- #endif
-
- extern int rtx_equal_function_value_matters;
-
- #if ! (defined (VMS) || defined (OS2))
- extern char **environ;
- #endif
- extern char *version_string, *language_string;
-
- /* Carry information from ASM_DECLARE_OBJECT_NAME
- to ASM_FINISH_DECLARE_OBJECT. */
-
- extern int size_directive_output;
- extern tree last_assemble_variable_decl;
-
- extern void init_lex ();
- extern void init_decl_processing ();
- extern void init_obstacks ();
- extern void init_tree_codes ();
- extern void init_rtl ();
- extern void init_regs ();
- extern void init_optabs ();
- extern void init_stmt ();
- extern void init_reg_sets ();
- extern void dump_flow_info ();
- extern void dump_sched_info ();
- extern void dump_local_alloc ();
-
- void rest_of_decl_compilation ();
- void error_with_file_and_line PVPROTO((char *file, int line, char *s, ...));
- void error_with_decl PVPROTO((tree decl, char *s, ...));
- void error_for_asm PVPROTO((rtx insn, char *s, ...));
- void error PVPROTO((char *s, ...));
- void fatal PVPROTO((char *s, ...));
- void warning_with_file_and_line PVPROTO((char *file, int line, char *s, ...));
- void warning_with_decl PVPROTO((tree decl, char *s, ...));
- void warning_for_asm PVPROTO((rtx insn, char *s, ...));
- void warning PVPROTO((char *s, ...));
- void pedwarn PVPROTO((char *s, ...));
- void pedwarn_with_decl PVPROTO((tree decl, char *s, ...));
- void pedwarn_with_file_and_line PVPROTO((char *file, int line, char *s, ...));
- void sorry PVPROTO((char *s, ...));
- void really_sorry PVPROTO((char *s, ...));
- void fancy_abort ();
- #ifndef abort
- void abort ();
- #endif
- void set_target_switch ();
- static void print_switch_values ();
- static char *decl_name ();
-
- /* Name of program invoked, sans directories. */
-
- char *progname;
-
- /* Copy of arguments to main. */
- int save_argc;
- char **save_argv;
-
- /* Name of current original source file (what was input to cpp).
- This comes from each #-command in the actual input. */
-
- char *input_filename;
-
- /* Name of top-level original source file (what was input to cpp).
- This comes from the #-command at the beginning of the actual input.
- If there isn't any there, then this is the cc1 input file name. */
-
- char *main_input_filename;
-
- /* Stream for reading from the input file. */
-
- FILE *finput;
-
- /* Current line number in real source file. */
-
- int lineno;
-
- /* Stack of currently pending input files. */
-
- struct file_stack *input_file_stack;
-
- /* Incremented on each change to input_file_stack. */
- int input_file_stack_tick;
-
- /* FUNCTION_DECL for function now being parsed or compiled. */
-
- extern tree current_function_decl;
-
- /* Name to use as base of names for dump output files. */
-
- char *dump_base_name;
-
- /* Bit flags that specify the machine subtype we are compiling for.
- Bits are tested using macros TARGET_... defined in the tm.h file
- and set by `-m...' switches. Must be defined in rtlanal.c. */
-
- extern int target_flags;
-
- /* Flags saying which kinds of debugging dump have been requested. */
-
- int rtl_dump = 0;
- int rtl_dump_and_exit = 0;
- int jump_opt_dump = 0;
- int cse_dump = 0;
- int loop_dump = 0;
- int cse2_dump = 0;
- int flow_dump = 0;
- int combine_dump = 0;
- int sched_dump = 0;
- int local_reg_dump = 0;
- int global_reg_dump = 0;
- int sched2_dump = 0;
- int jump2_opt_dump = 0;
- int dbr_sched_dump = 0;
- int flag_print_asm_name = 0;
- int stack_reg_dump = 0;
-
- /* Name for output file of assembly code, specified with -o. */
-
- char *asm_file_name;
-
- /* Value of the -G xx switch, and whether it was passed or not. */
- int g_switch_value;
- int g_switch_set;
-
- /* Type(s) of debugging information we are producing (if any).
- See flags.h for the definitions of the different possible
- types of debugging information. */
- enum debug_info_type write_symbols = NO_DEBUG;
-
- /* Level of debugging information we are producing. See flags.h
- for the definitions of the different possible levels. */
- enum debug_info_level debug_info_level = DINFO_LEVEL_NONE;
-
- /* Nonzero means use GNU-only extensions in the generated symbolic
- debugging information. */
- /* Currently, this only has an effect when write_symbols is set to
- DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */
- int use_gnu_debug_info_extensions = 0;
-
- /* Nonzero means do optimizations. -O.
- Particular numeric values stand for particular amounts of optimization;
- thus, -O2 stores 2 here. However, the optimizations beyond the basic
- ones are not controlled directly by this variable. Instead, they are
- controlled by individual `flag_...' variables that are defaulted
- based on this variable. */
-
- int optimize = 0;
-
- /* Number of error messages and warning messages so far. */
-
- int errorcount = 0;
- int warningcount = 0;
- int sorrycount = 0;
-
- /* Flag to output bytecode instead of native assembler */
- int output_bytecode = 0;
-
- /* Pointer to function to compute the name to use to print a declaration. */
-
- char *(*decl_printable_name) ();
-
- /* Pointer to function to compute rtl for a language-specific tree code. */
-
- struct rtx_def *(*lang_expand_expr) ();
-
- /* Pointer to function to finish handling an incomplete decl at the
- end of compilation. */
-
- void (*incomplete_decl_finalize_hook) () = 0;
-
- /* Pointer to function for interim exception handling implementation.
- This interface will change, and it is only here until a better interface
- replaces it. */
-
- void (*interim_eh_hook) PROTO((tree));
-
- /* Nonzero if generating code to do profiling. */
-
- int profile_flag = 0;
-
- /* Nonzero if generating code to do profiling on a line-by-line basis. */
-
- int profile_block_flag;
-
- /* Nonzero for -pedantic switch: warn about anything
- that standard spec forbids. */
-
- int pedantic = 0;
-
- /* Temporarily suppress certain warnings.
- This is set while reading code from a system header file. */
-
- int in_system_header = 0;
-
- /* Nonzero means do stupid register allocation.
- Currently, this is 1 if `optimize' is 0. */
-
- int obey_regdecls = 0;
-
- /* Don't print functions as they are compiled and don't print
- times taken by the various passes. -quiet. */
-
- int quiet_flag = 0;
-
- /* -f flags. */
-
- /* Nonzero means `char' should be signed. */
-
- int flag_signed_char;
-
- /* Nonzero means give an enum type only as many bytes as it needs. */
-
- 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. */
-
- #ifdef DEFAULT_CALLER_SAVES
- int flag_caller_saves = 1;
- #else
- int flag_caller_saves = 0;
- #endif
-
- /* Nonzero if structures and unions should be returned in memory.
-
- This should only be defined if compatibility with another compiler or
- with an ABI is needed, because it results in slower code. */
-
- #ifndef DEFAULT_PCC_STRUCT_RETURN
- #define DEFAULT_PCC_STRUCT_RETURN 1
- #endif
-
- /* Nonzero for -fpcc-struct-return: return values the same way PCC does. */
-
- int flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN;
-
- /* Nonzero for -fforce-mem: load memory value into a register
- before arithmetic on it. This makes better cse but slower compilation. */
-
- int flag_force_mem = 0;
-
- /* Nonzero for -fforce-addr: load memory address into a register before
- reference to memory. This makes better cse but slower compilation. */
-
- int flag_force_addr = 0;
-
- /* Nonzero for -fdefer-pop: don't pop args after each function call;
- instead save them up to pop many calls' args with one insns. */
-
- int flag_defer_pop = 0;
-
- /* Nonzero for -ffloat-store: don't allocate floats and doubles
- in extended-precision registers. */
-
- int flag_float_store = 0;
-
- /* Nonzero for -fcse-follow-jumps:
- have cse follow jumps to do a more extensive job. */
-
- int flag_cse_follow_jumps;
-
- /* Nonzero for -fcse-skip-blocks:
- have cse follow a branch around a block. */
- int flag_cse_skip_blocks;
-
- /* Nonzero for -fexpensive-optimizations:
- perform miscellaneous relatively-expensive optimizations. */
- int flag_expensive_optimizations;
-
- /* Nonzero for -fthread-jumps:
- have jump optimize output of loop. */
-
- int flag_thread_jumps;
-
- /* Nonzero enables strength-reduction in loop.c. */
-
- int flag_strength_reduce = 0;
-
- /* 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. */
-
- int flag_unroll_loops;
-
- /* Nonzero enables loop unrolling in unroll.c. All loops are unrolled.
- This is generally not a win. */
-
- int flag_unroll_all_loops;
-
- /* Nonzero for -fwritable-strings:
- store string constants in data segment and don't uniquize them. */
-
- int flag_writable_strings = 0;
-
- /* 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. */
-
- int flag_no_function_cse = 0;
-
- /* Nonzero for -fomit-frame-pointer:
- don't make a frame pointer in simple functions that don't require one. */
-
- int flag_omit_frame_pointer = 0;
-
- /* Nonzero to inhibit use of define_optimization peephole opts. */
-
- int flag_no_peephole = 0;
-
- /* Nonzero allows GCC to violate some IEEE or ANSI rules regarding math
- operations in the interest of optimization. For example it allows
- GCC to assume arguments to sqrt are nonnegative numbers, allowing
- faster code for sqrt to be generated. */
-
- int flag_fast_math = 0;
-
- /* Nonzero means all references through pointers are volatile. */
-
- int flag_volatile;
-
- /* Nonzero means treat all global and extern variables as global. */
-
- int flag_volatile_global;
-
- /* Nonzero means just do syntax checking; don't output anything. */
-
- int flag_syntax_only = 0;
-
- /* Nonzero means to rerun cse after loop optimization. This increases
- compilation time about 20% and picks up a few more common expressions. */
-
- static int flag_rerun_cse_after_loop;
-
- /* Nonzero for -finline-functions: ok to inline functions that look like
- good inline candidates. */
-
- int flag_inline_functions;
-
- /* Nonzero for -fkeep-inline-functions: even if we make a function
- go inline everywhere, keep its definition around for debugging
- purposes. */
-
- 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. */
-
- int flag_no_inline;
-
- /* Nonzero means we should be saving declaration info into a .X file. */
-
- int flag_gen_aux_info = 0;
-
- /* Specified name of aux-info file. */
-
- static char *aux_info_file_name;
-
- /* Nonzero means make the text shared if supported. */
-
- int flag_shared_data;
-
- /* Nonzero means schedule into delayed branch slots if supported. */
-
- int flag_delayed_branch;
-
- /* Nonzero means to run cleanups after CALL_EXPRs. */
-
- int flag_short_temps;
-
- /* Nonzero if we are compiling pure (sharable) code.
- Value is 1 if we are doing reasonable (i.e. simple
- offset into offset table) pic. Value is 2 if we can
- only perform register offsets. */
-
- int flag_pic;
-
- /* Nonzero means place uninitialized global data in the bss section. */
-
- int flag_no_common;
-
- /* 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. */
-
- int flag_pretend_float;
-
- /* Nonzero means change certain warnings into errors.
- Usually these are warnings about failure to conform to some standard. */
-
- int flag_pedantic_errors = 0;
-
- /* flag_schedule_insns means schedule insns within basic blocks (before
- local_alloc).
- flag_schedule_insns_after_reload means schedule insns after
- global_alloc. */
-
- int flag_schedule_insns = 0;
- int flag_schedule_insns_after_reload = 0;
-
- /* -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. */
- int flag_inhibit_size_directive = 0;
-
- /* -fverbose-asm causes extra commentary information to be produced in
- the generated assembly code (to make it more readable). This option
- is generally only of use to those who actually need to read the
- generated assembly code (perhaps while debugging the compiler itself). */
-
- int flag_verbose_asm = 0;
-
- /* -fgnu-linker specifies use of the GNU linker for initializations.
- (Or, more generally, a linker that handles initializations.)
- -fno-gnu-linker says that collect2 will be used. */
- #ifdef USE_COLLECT2
- int flag_gnu_linker = 0;
- #else
- int flag_gnu_linker = 1;
- #endif
-
- /* Table of language-independent -f options.
- STRING is the option name. VARIABLE is the address of the variable.
- ON_VALUE is the value to store in VARIABLE
- if `-fSTRING' is seen as an option.
- (If `-fno-STRING' is seen as an option, the opposite value is stored.) */
-
- struct { char *string; int *variable; int on_value;} f_options[] =
- {
- {"float-store", &flag_float_store, 1},
- {"volatile", &flag_volatile, 1},
- {"volatile-global", &flag_volatile_global, 1},
- {"defer-pop", &flag_defer_pop, 1},
- {"omit-frame-pointer", &flag_omit_frame_pointer, 1},
- {"cse-follow-jumps", &flag_cse_follow_jumps, 1},
- {"cse-skip-blocks", &flag_cse_skip_blocks, 1},
- {"expensive-optimizations", &flag_expensive_optimizations, 1},
- {"thread-jumps", &flag_thread_jumps, 1},
- {"strength-reduce", &flag_strength_reduce, 1},
- {"unroll-loops", &flag_unroll_loops, 1},
- {"unroll-all-loops", &flag_unroll_all_loops, 1},
- {"writable-strings", &flag_writable_strings, 1},
- {"peephole", &flag_no_peephole, 0},
- {"large-baserel", &flag_pic, 4},
- {"force-mem", &flag_force_mem, 1},
- {"force-addr", &flag_force_addr, 1},
- {"function-cse", &flag_no_function_cse, 0},
- {"inline-functions", &flag_inline_functions, 1},
- {"keep-inline-functions", &flag_keep_inline_functions, 1},
- {"inline", &flag_no_inline, 0},
- {"syntax-only", &flag_syntax_only, 1},
- {"shared-data", &flag_shared_data, 1},
- {"caller-saves", &flag_caller_saves, 1},
- {"pcc-struct-return", &flag_pcc_struct_return, 1},
- {"reg-struct-return", &flag_pcc_struct_return, 0},
- {"delayed-branch", &flag_delayed_branch, 1},
- {"rerun-cse-after-loop", &flag_rerun_cse_after_loop, 1},
- {"pretend-float", &flag_pretend_float, 1},
- {"schedule-insns", &flag_schedule_insns, 1},
- {"schedule-insns2", &flag_schedule_insns_after_reload, 1},
- {"pic", &flag_pic, 1},
- {"PIC", &flag_pic, 2},
- {"baserel", &flag_pic, 3},
- {"fast-math", &flag_fast_math, 1},
- {"common", &flag_no_common, 0},
- {"inhibit-size-directive", &flag_inhibit_size_directive, 1},
- {"verbose-asm", &flag_verbose_asm, 1},
- {"gnu-linker", &flag_gnu_linker, 1},
- {"bytecode", &output_bytecode, 1}
- };
-
- /* Table of language-specific options. */
-
- char *lang_options[] =
- {
- "-ansi",
- "-fallow-single-precision",
-
- "-fsigned-bitfields",
- "-funsigned-bitfields",
- "-fno-signed-bitfields",
- "-fno-unsigned-bitfields",
- "-fsigned-char",
- "-funsigned-char",
- "-fno-signed-char",
- "-fno-unsigned-char",
-
- "-ftraditional",
- "-traditional",
- "-fnotraditional",
- "-fno-traditional",
-
- "-fasm",
- "-fno-asm",
- "-fbuiltin",
- "-fno-builtin",
- "-fcond-mismatch",
- "-fno-cond-mismatch",
- "-fdollars-in-identifiers",
- "-fno-dollars-in-identifiers",
- "-fident",
- "-fno-ident",
- "-fshort-double",
- "-fno-short-double",
- "-fshort-enums",
- "-fno-short-enums",
-
- "-Wall",
- "-Wbad-function-cast",
- "-Wno-bad-function-cast",
- "-Wcast-qual",
- "-Wno-cast-qual",
- "-Wchar-subscripts",
- "-Wno-char-subscripts",
- "-Wcomment",
- "-Wno-comment",
- "-Wcomments",
- "-Wno-comments",
- "-Wconversion",
- "-Wno-conversion",
- "-Wformat",
- "-Wno-format",
- "-Wimport",
- "-Wno-import",
- "-Wimplicit",
- "-Wno-implicit",
- "-Wmissing-braces",
- "-Wno-missing-braces",
- "-Wmissing-declarations",
- "-Wno-missing-declarations",
- "-Wmissing-prototypes",
- "-Wno-missing-prototypes",
- "-Wnested-externs",
- "-Wno-nested-externs",
- "-Wparentheses",
- "-Wno-parentheses",
- "-Wpointer-arith",
- "-Wno-pointer-arith",
- "-Wredundant-decls",
- "-Wno-redundant-decls",
- "-Wstrict-prototypes",
- "-Wno-strict-prototypes",
- "-Wtraditional",
- "-Wno-traditional",
- "-Wtrigraphs",
- "-Wno-trigraphs",
- "-Wwrite-strings",
- "-Wno-write-strings",
-
- /* These are for C++. */
- "-+e0", /* gcc.c tacks the `-' on the front. */
- "-+e1",
- "-+e2",
- "-fall-virtual",
- "-fno-all-virtual",
- "-falt-external-templates",
- "-fno-alt-external-templates",
- "-fansi-overloading",
- "-fno-ansi-overloading",
- "-fcadillac",
- "-fno-cadillac",
- "-fconserve-space",
- "-fno-conserve-space",
- "-fdefault-inline",
- "-fno-default-inline",
- "-fdossier",
- "-fno-dossier",
- "-felide-constructors",
- "-fno-elide-constructors",
- "-fenum-int-equiv",
- "-fno-enum-int-equiv",
- "-fexternal-templates",
- "-fno-external-templates",
- "-fgc",
- "-fno-gc",
- "-fhandle-exceptions",
- "-fno-handle-exceptions",
- "-fhandle-signatures",
- "-fno-handle-signatures",
- "-fhuge-objects",
- "-fno-huge-objects",
- "-fimplement-inlines",
- "-fno-implement-inlines",
- "-fimplicit-templates",
- "-fno-implicit-templates",
- "-flabels-ok",
- "-fno-labels-ok",
- "-fmemoize-lookups",
- "-fno-memoize-lookups",
- "-fnonnull-objects",
- "-fno-nonnull-objects",
- "-fsave-memoized",
- "-fno-save-memoized",
- "-fshort-temps",
- "-fno-short-temps",
- "-fstats",
- "-fno-stats",
- "-fstrict-prototype",
- "-fno-strict-prototype",
- "-fthis-is-variable",
- "-fno-this-is-variable",
- "-fvtable-thunks",
- "-fno-vtable-thunks",
- "-fxref",
- "-fno-xref",
-
- "-Wreturn-type",
- "-Wno-return-type",
- "-Woverloaded-virtual",
- "-Wno-overloaded-virtual",
- "-Wenum-clash",
- "-Wno-enum-clash",
- "-Wtemplate-debugging",
- "-Wno-template-debugging",
- "-Wctor-dtor-privacy",
- "-Wno-ctor-dtor-privacy",
- "-Wnon-virtual-dtor",
- "-Wno-non-virtual-dtor",
- "-Wextern-inline",
- "-Wno-extern-inline",
-
- /* these are for obj c */
- "-lang-objc",
- "-gen-decls",
- "-fgnu-runtime",
- "-fno-gnu-runtime",
- "-fnext-runtime",
- "-fno-next-runtime",
- "-Wselector",
- "-Wno-selector",
- "-Wprotocol",
- "-Wno-protocol",
-
- /* This is for GNAT and is temporary. */
- "-gnat",
- 0
- };
-
- /* Options controlling warnings */
-
- /* Don't print warning messages. -w. */
-
- int inhibit_warnings = 0;
-
- /* Print various extra warnings. -W. */
-
- int extra_warnings = 0;
-
- /* Treat warnings as errors. -Werror. */
-
- int warnings_are_errors = 0;
-
- /* Nonzero to warn about unused local variables. */
-
- int warn_unused;
-
- /* Nonzero to warn about variables used before they are initialized. */
-
- int warn_uninitialized;
-
- /* Nonzero means warn about all declarations which shadow others. */
-
- int warn_shadow;
-
- /* Warn if a switch on an enum fails to have a case for every enum value. */
-
- 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. */
-
- 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). */
-
- 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'. */
-
- int warn_id_clash;
- unsigned 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'. */
-
- int warn_larger_than;
- unsigned larger_than_size;
-
- /* Nonzero means warn if inline function is too large. */
-
- int warn_inline;
-
- /* Warn if a function returns an aggregate,
- since there are often incompatible calling conventions for doing this. */
-
- int warn_aggregate_return;
-
- /* Likewise for -W. */
-
- struct { char *string; int *variable; int on_value;} W_options[] =
- {
- {"unused", &warn_unused, 1},
- {"error", &warnings_are_errors, 1},
- {"shadow", &warn_shadow, 1},
- {"switch", &warn_switch, 1},
- {"aggregate-return", &warn_aggregate_return, 1},
- {"cast-align", &warn_cast_align, 1},
- {"uninitialized", &warn_uninitialized, 1},
- {"inline", &warn_inline, 1}
- };
-
- /* Output files for assembler code (real compiler output)
- and debugging dumps. */
-
- FILE *asm_out_file;
- FILE *aux_info_file;
- FILE *rtl_dump_file;
- FILE *jump_opt_dump_file;
- FILE *cse_dump_file;
- FILE *loop_dump_file;
- FILE *cse2_dump_file;
- FILE *flow_dump_file;
- FILE *combine_dump_file;
- FILE *sched_dump_file;
- FILE *local_reg_dump_file;
- FILE *global_reg_dump_file;
- FILE *sched2_dump_file;
- FILE *jump2_opt_dump_file;
- FILE *dbr_sched_dump_file;
- FILE *stack_reg_dump_file;
-
- /* Time accumulators, to count the total time spent in various passes. */
-
- int parse_time;
- int varconst_time;
- int integration_time;
- int jump_time;
- int cse_time;
- int loop_time;
- int cse2_time;
- int flow_time;
- int combine_time;
- int sched_time;
- int local_alloc_time;
- int global_alloc_time;
- int sched2_time;
- int dbr_sched_time;
- int shorten_branch_time;
- int stack_reg_time;
- int final_time;
- int symout_time;
- int dump_time;
-
- /* Return time used so far, in microseconds. */
-
- int
- get_run_time ()
- {
- #ifdef USG
- struct tms tms;
- #else
- #ifndef VMS
- struct rusage rusage;
- #else /* VMS */
- struct
- {
- int proc_user_time;
- int proc_system_time;
- int child_user_time;
- int child_system_time;
- } vms_times;
- #endif
- #endif
-
- if (quiet_flag)
- return 0;
-
- #ifdef USG
- times (&tms);
- return (tms.tms_utime + tms.tms_stime) * (1000000 / HZ);
- #else
- #ifndef VMS
- getrusage (0, &rusage);
- return (rusage.ru_utime.tv_sec * 1000000 + rusage.ru_utime.tv_usec
- + rusage.ru_stime.tv_sec * 1000000 + rusage.ru_stime.tv_usec);
- #else /* VMS */
- times (&vms_times);
- return (vms_times.proc_user_time + vms_times.proc_system_time) * 10000;
- #endif
- #endif
- }
-
- #define TIMEVAR(VAR, BODY) \
- do { int otime = get_run_time (); BODY; VAR += get_run_time () - otime; } while (0)
-
- void
- print_time (str, total)
- char *str;
- int total;
- {
- fprintf (stderr,
- "time in %s: %d.%06d\n",
- str, total / 1000000, total % 1000000);
- }
-
- /* Count an error or warning. Return 1 if the message should be printed. */
-
- int
- count_error (warningp)
- int warningp;
- {
- if (warningp && inhibit_warnings)
- return 0;
-
- if (warningp && !warnings_are_errors)
- warningcount++;
- else
- {
- static int warning_message = 0;
-
- if (warningp && !warning_message)
- {
- fprintf (stderr, "%s: warnings being treated as errors\n", progname);
- warning_message = 1;
- }
- errorcount++;
- }
-
- return 1;
- }
-
- /* Print a fatal error message. NAME is the text.
- Also include a system error message based on `errno'. */
-
- void
- pfatal_with_name (name)
- char *name;
- {
- fprintf (stderr, "%s: ", progname);
- perror (name);
- exit (35);
- }
-
- void
- fatal_io_error (name)
- char *name;
- {
- fprintf (stderr, "%s: %s: I/O error\n", progname, name);
- exit (35);
- }
-
- /* Called to give a better error message when we don't have an insn to match
- what we are looking for or if the insn's constraints aren't satisfied,
- rather than just calling abort(). */
-
- void
- fatal_insn_not_found (insn)
- rtx insn;
- {
- if (!output_bytecode)
- {
- if (INSN_CODE (insn) < 0)
- error ("internal error--unrecognizable insn:");
- else
- error ("internal error--insn does not satisfy its constraints:");
- debug_rtx (insn);
- }
- if (asm_out_file)
- fflush (asm_out_file);
- if (aux_info_file)
- fflush (aux_info_file);
- if (rtl_dump_file)
- fflush (rtl_dump_file);
- if (jump_opt_dump_file)
- fflush (jump_opt_dump_file);
- if (cse_dump_file)
- fflush (cse_dump_file);
- if (loop_dump_file)
- fflush (loop_dump_file);
- if (cse2_dump_file)
- fflush (cse2_dump_file);
- if (flow_dump_file)
- fflush (flow_dump_file);
- if (combine_dump_file)
- fflush (combine_dump_file);
- if (sched_dump_file)
- fflush (sched_dump_file);
- if (local_reg_dump_file)
- fflush (local_reg_dump_file);
- if (global_reg_dump_file)
- fflush (global_reg_dump_file);
- if (sched2_dump_file)
- fflush (sched2_dump_file);
- if (jump2_opt_dump_file)
- fflush (jump2_opt_dump_file);
- if (dbr_sched_dump_file)
- fflush (dbr_sched_dump_file);
- if (stack_reg_dump_file)
- fflush (stack_reg_dump_file);
- abort ();
- }
-
- /* This is the default decl_printable_name function. */
-
- static char *
- decl_name (decl, kind)
- tree decl;
- char **kind;
- {
- return IDENTIFIER_POINTER (DECL_NAME (decl));
- }
-
- /* This is the default interim_eh_hook function. */
-
- void
- interim_eh (finalization)
- tree finalization;
- {
- /* Don't do anything by default. */
- }
-
- static int need_error_newline;
-
- /* Function of last error message;
- more generally, function such that if next error message is in it
- then we don't have to mention the function name. */
- static tree last_error_function = NULL;
-
- /* Used to detect when input_file_stack has changed since last described. */
- static int last_error_tick;
-
- /* Called when the start of a function definition is parsed,
- this function prints on stderr the name of the function. */
-
- void
- announce_function (decl)
- tree decl;
- {
- if (! quiet_flag)
- {
- char *junk;
- if (rtl_dump_and_exit)
- fprintf (stderr, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl)));
- else
- fprintf (stderr, " %s", (*decl_printable_name) (decl, &junk));
- fflush (stderr);
- need_error_newline = 1;
- last_error_function = current_function_decl;
- }
- }
-
- /* Prints out, if necessary, the name of the current function
- which caused an error. Called from all error and warning functions. */
-
- void
- report_error_function (file)
- char *file;
- {
- struct file_stack *p;
-
- if (need_error_newline)
- {
- fprintf (stderr, "\n");
- need_error_newline = 0;
- }
-
- if (last_error_function != current_function_decl)
- {
- char *kind = "function";
- if (current_function_decl != 0
- && TREE_CODE (TREE_TYPE (current_function_decl)) == METHOD_TYPE)
- kind = "method";
-
- if (file)
- fprintf (stderr, "%s: ", file);
-
- if (current_function_decl == NULL)
- fprintf (stderr, "At top level:\n");
- else
- {
- char *name = (*decl_printable_name) (current_function_decl, &kind);
- fprintf (stderr, "In %s `%s':\n", kind, name);
- }
-
- last_error_function = current_function_decl;
- }
- if (input_file_stack && input_file_stack->next != 0
- && input_file_stack_tick != last_error_tick)
- {
- fprintf (stderr, "In file included");
- for (p = input_file_stack->next; p; p = p->next)
- {
- fprintf (stderr, " from %s:%d", p->name, p->line);
- if (p->next)
- fprintf (stderr, ",\n ");
- }
- fprintf (stderr, ":\n");
- last_error_tick = input_file_stack_tick;
- }
- }
-
- /* Print a message. */
-
- static void
- vmessage (prefix, s, ap)
- char *prefix;
- char *s;
- va_list ap;
- {
- if (prefix)
- fprintf (stderr, "%s: ", prefix);
-
- #ifdef HAVE_VPRINTF
- vfprintf (stderr, s, ap);
- #else
- {
- HOST_WIDE_INT v1 = va_arg(ap, HOST_WIDE_INT);
- HOST_WIDE_INT v2 = va_arg(ap, HOST_WIDE_INT);
- HOST_WIDE_INT v3 = va_arg(ap, HOST_WIDE_INT);
- fprintf (stderr, s, v1, v2, v3);
- }
- #endif
- }
-
- /* Print a message relevant to line LINE of file FILE. */
-
- static void
- v_message_with_file_and_line (file, line, prefix, s, ap)
- char *file;
- int line;
- char *prefix;
- char *s;
- va_list ap;
- {
- if (file)
- fprintf (stderr, "%s:%d: ", file, line);
- else
- fprintf (stderr, "%s: ", progname);
-
- vmessage (prefix, s, ap);
- fputc ('\n', stderr);
- }
-
- /* Print a message relevant to the given DECL. */
-
- static void
- v_message_with_decl (decl, prefix, s, ap)
- tree decl;
- char *prefix;
- char *s;
- va_list ap;
- {
- char *n, *p, *junk;
-
- fprintf (stderr, "%s:%d: ",
- DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl));
-
- if (prefix)
- fprintf (stderr, "%s: ", prefix);
-
- /* Do magic to get around lack of varargs support for insertion
- of arguments into existing list. We know that the decl is first;
- we ass_u_me that it will be printed with "%s". */
-
- for (p = s; *p; ++p)
- {
- if (*p == '%')
- {
- if (*(p + 1) == '%')
- ++p;
- else
- break;
- }
- }
-
- if (p > s) /* Print the left-hand substring. */
- {
- char fmt[sizeof "%.255s"];
- long width = p - s;
-
- if (width > 255L) width = 255L; /* arbitrary */
- sprintf (fmt, "%%.%lds", width);
- fprintf (stderr, fmt, s);
- }
-
- if (*p == '%') /* Print the name. */
- {
- char *n = (DECL_NAME (decl)
- ? (*decl_printable_name) (decl, &junk)
- : "((anonymous))");
- fputs (n, stderr);
- while (*p)
- {
- ++p;
- if (isalpha (*(p - 1) & 0xFF))
- break;
- }
- }
-
- if (*p) /* Print the rest of the message. */
- vmessage ((char *)NULL, p, ap);
-
- fputc ('\n', stderr);
- }
-
- /* Figure file and line of the given INSN. */
-
- static void
- file_and_line_for_asm (insn, pfile, pline)
- rtx insn;
- char **pfile;
- int *pline;
- {
- rtx body = PATTERN (insn);
- rtx asmop;
-
- /* Find the (or one of the) ASM_OPERANDS in the insn. */
- if (GET_CODE (body) == SET && GET_CODE (SET_SRC (body)) == ASM_OPERANDS)
- asmop = SET_SRC (body);
- else if (GET_CODE (body) == ASM_OPERANDS)
- asmop = body;
- else if (GET_CODE (body) == PARALLEL
- && GET_CODE (XVECEXP (body, 0, 0)) == SET)
- asmop = SET_SRC (XVECEXP (body, 0, 0));
- else if (GET_CODE (body) == PARALLEL
- && GET_CODE (XVECEXP (body, 0, 0)) == ASM_OPERANDS)
- asmop = XVECEXP (body, 0, 0);
- else
- asmop = NULL;
-
- if (asmop)
- {
- *pfile = ASM_OPERANDS_SOURCE_FILE (asmop);
- *pline = ASM_OPERANDS_SOURCE_LINE (asmop);
- }
- else
- {
- *pfile = input_filename;
- *pline = lineno;
- }
- }
-
- /* Report an error at line LINE of file FILE. */
-
- static void
- v_error_with_file_and_line (file, line, s, ap)
- char *file;
- int line;
- char *s;
- va_list ap;
- {
- count_error (0);
- report_error_function (file);
- v_message_with_file_and_line (file, line, (char *)NULL, s, ap);
- }
-
- void
- error_with_file_and_line VPROTO((char *file, int line, char *s, ...))
- {
- #ifndef __STDC__
- char *file;
- int line;
- char *s;
- #endif
- va_list ap;
-
- VA_START (ap, s);
-
- #ifndef __STDC__
- file = va_arg (ap, char *);
- line = va_arg (ap, int);
- s = va_arg (ap, char *);
- #endif
-
- v_error_with_file_and_line (file, line, s, ap);
- va_end (ap);
- }
-
- /* Report an error at the declaration DECL.
- S is a format string which uses %s to substitute the declaration
- name; subsequent substitutions are a la printf. */
-
- static void
- v_error_with_decl (decl, s, ap)
- tree decl;
- char *s;
- va_list ap;
- {
- count_error (0);
- report_error_function (DECL_SOURCE_FILE (decl));
- v_message_with_decl (decl, (char *)NULL, s, ap);
- }
-
- void
- error_with_decl VPROTO((tree decl, char *s, ...))
- {
- #ifndef __STDC__
- tree decl;
- char *s;
- #endif
- va_list ap;
-
- VA_START (ap, s);
-
- #ifndef __STDC__
- decl = va_arg (ap, tree);
- s = va_arg (ap, char *);
- #endif
-
- v_error_with_decl (decl, s, ap);
- va_end (ap);
- }
-
- /* Report an error at the line number of the insn INSN.
- This is used only when INSN is an `asm' with operands,
- and each ASM_OPERANDS records its own source file and line. */
-
- static void
- v_error_for_asm (insn, s, ap)
- rtx insn;
- char *s;
- va_list ap;
- {
- char *file;
- int line;
-
- count_error (0);
- file_and_line_for_asm (insn, &file, &line);
- report_error_function (file);
- v_message_with_file_and_line (file, line, (char *)NULL, s, ap);
- }
-
- void
- error_for_asm VPROTO((rtx insn, char *s, ...))
- {
- #ifndef __STDC__
- rtx insn;
- char *s;
- #endif
- va_list ap;
-
- VA_START (ap, s);
-
- #ifndef __STDC__
- insn = va_arg (ap, rtx);
- s = va_arg (ap, char *);
- #endif
-
- v_error_for_asm (insn, s, ap);
- va_end (ap);
- }
-
- /* Report an error at the current line number. */
-
- static void
- verror (s, ap)
- char *s;
- va_list ap;
- {
- v_error_with_file_and_line (input_filename, lineno, s, ap);
- }
-
- void
- error VPROTO((char *s, ...))
- {
- #ifndef __STDC__
- char *s;
- #endif
- va_list ap;
-
- VA_START (ap, s);
-
- #ifndef __STDC__
- s = va_arg (ap, char *);
- #endif
-
- verror (s, ap);
- va_end (ap);
- }
-
- /* Report a fatal error at the current line number. */
-
- static void
- vfatal (s, ap)
- char *s;
- va_list ap;
- {
- verror (s, ap);
- exit (34);
- }
-
- void
- fatal VPROTO((char *s, ...))
- {
- #ifndef __STDC__
- char *s;
- #endif
- va_list ap;
-
- VA_START (ap, s);
-
- #ifndef __STDC__
- s = va_arg (ap, char *);
- #endif
-
- vfatal (s, ap);
- va_end (ap);
- }
-
- /* Report a warning at line LINE of file FILE. */
-
- static void
- v_warning_with_file_and_line (file, line, s, ap)
- char *file;
- int line;
- char *s;
- va_list ap;
- {
- if (count_error (1))
- {
- report_error_function (file);
- v_message_with_file_and_line (file, line, "warning", s, ap);
- }
- }
-
- void
- warning_with_file_and_line VPROTO((char *file, int line, char *s, ...))
- {
- #ifndef __STDC__
- char *file;
- int line;
- char *s;
- #endif
- va_list ap;
-
- VA_START (ap, s);
-
- #ifndef __STDC__
- file = va_arg (ap, char *);
- line = va_arg (ap, int);
- s = va_arg (ap, char *);
- #endif
-
- v_warning_with_file_and_line (file, line, s, ap);
- va_end (ap);
- }
-
- /* Report a warning at the declaration DECL.
- S is a format string which uses %s to substitute the declaration
- name; subsequent substitutions are a la printf. */
-
- static void
- v_warning_with_decl (decl, s, ap)
- tree decl;
- char *s;
- va_list ap;
- {
- if (count_error (1))
- {
- report_error_function (DECL_SOURCE_FILE (decl));
- v_message_with_decl (decl, "warning", s, ap);
- }
- }
-
- void
- warning_with_decl VPROTO((tree decl, char *s, ...))
- {
- #ifndef __STDC__
- tree decl;
- char *s;
- #endif
- va_list ap;
-
- VA_START (ap, s);
-
- #ifndef __STDC__
- decl = va_arg (ap, tree);
- s = va_arg (ap, char *);
- #endif
-
- v_warning_with_decl (decl, s, ap);
- va_end (ap);
- }
-
- /* Report a warning at the line number of the insn INSN.
- This is used only when INSN is an `asm' with operands,
- and each ASM_OPERANDS records its own source file and line. */
-
- static void
- v_warning_for_asm (insn, s, ap)
- rtx insn;
- char *s;
- va_list ap;
- {
- if (count_error (1))
- {
- char *file;
- int line;
-
- file_and_line_for_asm (insn, &file, &line);
- report_error_function (file);
- v_message_with_file_and_line (file, line, "warning", s, ap);
- }
- }
-
- void
- warning_for_asm VPROTO((rtx insn, char *s, ...))
- {
- #ifndef __STDC__
- rtx insn;
- char *s;
- #endif
- va_list ap;
-
- VA_START (ap, s);
-
- #ifndef __STDC__
- insn = va_arg (ap, rtx);
- s = va_arg (ap, char *);
- #endif
-
- v_warning_for_asm (insn, s, ap);
- va_end (ap);
- }
-
- /* Report a warning at the current line number. */
-
- static void
- vwarning (s, ap)
- char *s;
- va_list ap;
- {
- v_warning_with_file_and_line (input_filename, lineno, s, ap);
- }
-
- void
- warning VPROTO((char *s, ...))
- {
- #ifndef __STDC__
- char *s;
- #endif
- va_list ap;
-
- VA_START (ap, s);
-
- #ifndef __STDC__
- s = va_arg (ap, char *);
- #endif
-
- vwarning (s, ap);
- va_end (ap);
- }
-
- /* These functions issue either warnings or errors depending on
- -pedantic-errors. */
-
- static void
- vpedwarn (s, ap)
- char *s;
- va_list ap;
- {
- if (flag_pedantic_errors)
- verror (s, ap);
- else
- vwarning (s, ap);
- }
-
- void
- pedwarn VPROTO((char *s, ...))
- {
- #ifndef __STDC__
- char *s;
- #endif
- va_list ap;
-
- VA_START (ap, s);
-
- #ifndef __STDC__
- s = va_arg (ap, char *);
- #endif
-
- vpedwarn (s, ap);
- va_end (ap);
- }
-
- static void
- v_pedwarn_with_decl (decl, s, ap)
- tree decl;
- char *s;
- va_list ap;
- {
- /* We don't want -pedantic-errors to cause the compilation to fail from
- "errors" in system header files. Sometimes fixincludes can't fix what's
- broken (eg: unsigned char bitfields - fixing it may change the alignment
- which will cause programs to mysteriously fail because the C library
- or kernel uses the original layout). There's no point in issuing a
- warning either, it's just unnecessary noise. */
-
- if (! DECL_IN_SYSTEM_HEADER (decl))
- {
- if (flag_pedantic_errors)
- v_error_with_decl (decl, s, ap);
- else
- v_warning_with_decl (decl, s, ap);
- }
- }
-
- void
- pedwarn_with_decl VPROTO((tree decl, char *s, ...))
- {
- #ifndef __STDC__
- tree decl;
- char *s;
- #endif
- va_list ap;
-
- VA_START (ap, s);
-
- #ifndef __STDC__
- decl = va_arg (ap, tree);
- s = va_arg (ap, char *);
- #endif
-
- v_pedwarn_with_decl (decl, s, ap);
- va_end (ap);
- }
-
- static void
- v_pedwarn_with_file_and_line (file, line, s, ap)
- char *file;
- int line;
- char *s;
- va_list ap;
- {
- if (flag_pedantic_errors)
- v_error_with_file_and_line (file, line, s, ap);
- else
- v_warning_with_file_and_line (file, line, s, ap);
- }
-
- void
- pedwarn_with_file_and_line VPROTO((char *file, int line, char *s, ...))
- {
- #ifndef __STDC__
- char *file;
- int line;
- char *s;
- #endif
- va_list ap;
-
- VA_START (ap, s);
-
- #ifndef __STDC__
- file = va_arg (ap, char *);
- line = va_arg (ap, int);
- s = va_arg (ap, char *);
- #endif
-
- v_pedwarn_with_file_and_line (file, line, s, ap);
- va_end (ap);
- }
-
- /* Apologize for not implementing some feature. */
-
- static void
- vsorry (s, ap)
- char *s;
- va_list ap;
- {
- sorrycount++;
- if (input_filename)
- fprintf (stderr, "%s:%d: ", input_filename, lineno);
- else
- fprintf (stderr, "%s: ", progname);
- vmessage ("sorry, not implemented", s, ap);
- fputc ('\n', stderr);
- }
-
- void
- sorry VPROTO((char *s, ...))
- {
- #ifndef __STDC__
- char *s;
- #endif
- va_list ap;
-
- VA_START (ap, s);
-
- #ifndef __STDC__
- s = va_arg (ap, char *);
- #endif
-
- vsorry (s, ap);
- va_end (ap);
- }
-
- /* Apologize for not implementing some feature, then quit. */
-
- static void
- v_really_sorry (s, ap)
- char *s;
- va_list ap;
- {
- sorrycount++;
- if (input_filename)
- fprintf (stderr, "%s:%d: ", input_filename, lineno);
- else
- fprintf (stderr, "%s: ", progname);
- vmessage ("sorry, not implemented", s, ap);
- fatal (" (fatal)\n");
- }
-
- void
- really_sorry VPROTO((char *s, ...))
- {
- #ifndef __STDC__
- char *s;
- #endif
- va_list ap;
-
- VA_START (ap, s);
-
- #ifndef __STDC__
- s = va_arg (ap, char *);
- #endif
-
- v_really_sorry (s, ap);
- va_end (ap);
- }
-
- /* More 'friendly' abort that prints the line and file.
- config.h can #define abort fancy_abort if you like that sort of thing.
-
- I don't think this is actually a good idea.
- Other sorts of crashes will look a certain way.
- It is a good thing if crashes from calling abort look the same way.
- -- RMS */
-
- void
- fancy_abort ()
- {
- fatal ("internal gcc abort");
- }
-
- /* This calls abort and is used to avoid problems when abort if a macro.
- It is used when we need to pass the address of abort. */
-
- void
- do_abort ()
- {
- abort ();
- }
-
- /* When `malloc.c' is compiled with `rcheck' defined,
- it calls this function to report clobberage. */
-
- void
- botch (s)
- {
- abort ();
- }
-
- /* Same as `malloc' but report error if no memory available. */
-
- char *
- xmalloc (size)
- unsigned size;
- {
- register char *value = (char *) malloc (size);
- if (value == 0)
- fatal ("virtual memory exhausted");
- return value;
- }
-
- /* Same as `realloc' but report error if no memory available. */
-
- char *
- xrealloc (ptr, size)
- char *ptr;
- int size;
- {
- char *result = (char *) realloc (ptr, size);
- if (!result)
- fatal ("virtual memory exhausted");
- return result;
- }
-
- /* Return the logarithm of X, base 2, considering X unsigned,
- if X is a power of 2. Otherwise, returns -1.
-
- This should be used via the `exact_log2' macro. */
-
- int
- exact_log2_wide (x)
- register unsigned HOST_WIDE_INT x;
- {
- register int log = 0;
- /* Test for 0 or a power of 2. */
- if (x == 0 || x != (x & -x))
- return -1;
- while ((x >>= 1) != 0)
- log++;
- return log;
- }
-
- /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X.
- If X is 0, return -1.
-
- This should be used via the floor_log2 macro. */
-
- int
- floor_log2_wide (x)
- register unsigned HOST_WIDE_INT x;
- {
- register int log = -1;
- while (x != 0)
- log++,
- x >>= 1;
- return log;
- }
-
- int float_handled;
- jmp_buf float_handler;
-
- /* Specify where to longjmp to when a floating arithmetic error happens.
- If HANDLER is 0, it means don't handle the errors any more. */
-
- void
- set_float_handler (handler)
- jmp_buf handler;
- {
- float_handled = (handler != 0);
- if (handler)
- bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler));
- }
-
- /* Specify, in HANDLER, where to longjmp to when a floating arithmetic
- error happens, pushing the previous specification into OLD_HANDLER.
- Return an indication of whether there was a previous handler in effect. */
-
- int
- push_float_handler (handler, old_handler)
- jmp_buf handler, old_handler;
- {
- int was_handled = float_handled;
-
- float_handled = 1;
- if (was_handled)
- bcopy ((char *) float_handler, (char *) old_handler,
- sizeof (float_handler));
-
- bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler));
- return was_handled;
- }
-
- /* Restore the previous specification of whether and where to longjmp to
- when a floating arithmetic error happens. */
-
- void
- pop_float_handler (handled, handler)
- int handled;
- jmp_buf handler;
- {
- float_handled = handled;
- if (handled)
- bcopy ((char *) handler, (char *) float_handler, sizeof (float_handler));
- }
-
- /* Signals actually come here. */
-
- static void
- float_signal (signo)
- /* If this is missing, some compilers complain. */
- int signo;
- {
- if (float_handled == 0)
- abort ();
- #if defined (USG) || defined (hpux)
- signal (SIGFPE, float_signal); /* re-enable the signal catcher */
- #endif
- float_handled = 0;
- signal (SIGFPE, float_signal);
- longjmp (float_handler, 1);
- }
-
- /* Handler for SIGPIPE. */
-
- static void
- pipe_closed (signo)
- /* If this is missing, some compilers complain. */
- int signo;
- {
- fatal ("output pipe has been closed");
- }
-
- /* Strip off a legitimate source ending from the input string NAME of
- length LEN. */
-
- void
- strip_off_ending (name, len)
- char *name;
- int len;
- {
- if (len > 2 && ! strcmp (".c", name + len - 2))
- name[len - 2] = 0;
- else if (len > 2 && ! strcmp (".m", name + len - 2))
- name[len - 2] = 0;
- else if (len > 2 && ! strcmp (".i", name + len - 2))
- name[len - 2] = 0;
- else if (len > 3 && ! strcmp (".ii", name + len - 3))
- name[len - 3] = 0;
- else if (len > 3 && ! strcmp (".co", name + len - 3))
- name[len - 3] = 0;
- else if (len > 3 && ! strcmp (".cc", name + len - 3))
- name[len - 3] = 0;
- else if (len > 2 && ! strcmp (".C", name + len - 2))
- name[len - 2] = 0;
- else if (len > 4 && ! strcmp (".cxx", name + len - 4))
- name[len - 4] = 0;
- else if (len > 4 && ! strcmp (".cpp", name + len - 4))
- name[len - 4] = 0;
- else if (len > 2 && ! strcmp (".f", name + len - 2))
- name[len - 2] = 0;
- /* Ada will use extensions like .ada, .adb, and .ads, so just test
- for "ad". */
- else if (len > 4 && ! strncmp (".ad", name + len - 4, 3))
- name[len - 4] = 0;
- else if (len > 4 && ! strcmp (".atr", name + len - 4))
- name[len - 4] = 0;
- }
-
- /* Output a quoted string. */
- void
- output_quoted_string (asm_file, string)
- FILE *asm_file;
- char *string;
- {
- char c;
-
- putc ('\"', asm_file);
- while ((c = *string++) != 0)
- {
- if (c == '\"' || c == '\\')
- putc ('\\', asm_file);
- putc (c, asm_file);
- }
- putc ('\"', asm_file);
- }
-
- /* Output a file name in the form wanted by System V. */
-
- void
- output_file_directive (asm_file, input_name)
- FILE *asm_file;
- char *input_name;
- {
- #ifdef FILE_NAME_NONDIRECTORY
- char *na = FILE_NAME_NONDIRECTORY (input_name);
- #else
- int len = strlen (input_name);
- char *na = input_name + len;
-
- /* NA gets INPUT_NAME sans directory names. */
- while (na > input_name)
- {
- if (na[-1] == '/')
- break;
- na--;
- }
- #endif
-
- #ifdef ASM_OUTPUT_MAIN_SOURCE_FILENAME
- ASM_OUTPUT_MAIN_SOURCE_FILENAME (asm_file, na);
- #else
- #ifdef ASM_OUTPUT_SOURCE_FILENAME
- ASM_OUTPUT_SOURCE_FILENAME (asm_file, na);
- #else
- fprintf (asm_file, "\t.file\t");
- output_quoted_string (asm_file, na);
- fputc ('\n', asm_file);
- #endif
- #endif
- }
-
- /* Routine to build language identifier for object file. */
- static void
- output_lang_identify (asm_out_file)
- FILE *asm_out_file;
- {
- int len = strlen (lang_identify ()) + sizeof ("__gnu_compiled_") + 1;
- char *s = (char *) alloca (len);
- sprintf (s, "__gnu_compiled_%s", lang_identify ());
- ASM_OUTPUT_LABEL (asm_out_file, s);
- }
-
- /* Routine to open a dump file. */
- static FILE *
- open_dump_file (base_name, suffix)
- char *base_name;
- char *suffix;
- {
- FILE *f;
- char *dumpname = (char *) alloca (strlen (base_name) + strlen (suffix) + 1);
-
- strcpy (dumpname, base_name);
- strcat (dumpname, suffix);
- f = fopen (dumpname, "w");
- if (f == 0)
- pfatal_with_name (dumpname);
- return f;
- }
-
- /* Compile an entire file of output from cpp, named NAME.
- Write a file of assembly output and various debugging dumps. */
-
- static void
- compile_file (name)
- char *name;
- {
- tree globals;
- int start_time;
-
- int name_specified = name != 0;
-
- if (dump_base_name == 0)
- dump_base_name = name ? name : "gccdump";
-
- parse_time = 0;
- varconst_time = 0;
- integration_time = 0;
- jump_time = 0;
- cse_time = 0;
- loop_time = 0;
- cse2_time = 0;
- flow_time = 0;
- combine_time = 0;
- sched_time = 0;
- local_alloc_time = 0;
- global_alloc_time = 0;
- sched2_time = 0;
- dbr_sched_time = 0;
- shorten_branch_time = 0;
- stack_reg_time = 0;
- final_time = 0;
- symout_time = 0;
- dump_time = 0;
-
- /* Open input file. */
-
- if (name == 0 || !strcmp (name, "-"))
- {
- finput = stdin;
- name = "stdin";
- }
- else
- finput = fopen (name, "r");
- if (finput == 0)
- pfatal_with_name (name);
-
- #ifdef IO_BUFFER_SIZE
- setvbuf (finput, (char *) xmalloc (IO_BUFFER_SIZE), _IOFBF, IO_BUFFER_SIZE);
- #endif
-
- /* Initialize data in various passes. */
-
- init_obstacks ();
- init_tree_codes ();
- init_lex ();
- /* Some of these really don't need to be called when generating bytecode,
- but the options would have to be parsed first to know that. -bson */
- init_rtl ();
- init_emit_once (debug_info_level == DINFO_LEVEL_NORMAL
- || debug_info_level == DINFO_LEVEL_VERBOSE);
- init_regs ();
- init_decl_processing ();
- init_optabs ();
- init_stmt ();
- init_expmed ();
- init_expr_once ();
- init_loop ();
- init_reload ();
-
- if (flag_caller_saves)
- init_caller_save ();
-
- /* If auxiliary info generation is desired, open the output file.
- This goes in the same directory as the source file--unlike
- all the other output files. */
- if (flag_gen_aux_info)
- {
- aux_info_file = fopen (aux_info_file_name, "w");
- if (aux_info_file == 0)
- pfatal_with_name (aux_info_file_name);
- }
-
- /* If rtl dump desired, open the output file. */
- if (rtl_dump)
- rtl_dump_file = open_dump_file (dump_base_name, ".rtl");
-
- /* If jump_opt dump desired, open the output file. */
- if (jump_opt_dump)
- jump_opt_dump_file = open_dump_file (dump_base_name, ".jump");
-
- /* If cse dump desired, open the output file. */
- if (cse_dump)
- cse_dump_file = open_dump_file (dump_base_name, ".cse");
-
- /* If loop dump desired, open the output file. */
- if (loop_dump)
- loop_dump_file = open_dump_file (dump_base_name, ".loop");
-
- /* If cse2 dump desired, open the output file. */
- if (cse2_dump)
- cse2_dump_file = open_dump_file (dump_base_name, ".cse2");
-
- /* If flow dump desired, open the output file. */
- if (flow_dump)
- flow_dump_file = open_dump_file (dump_base_name, ".flow");
-
- /* If combine dump desired, open the output file. */
- if (combine_dump)
- combine_dump_file = open_dump_file (dump_base_name, ".combine");
-
- /* If scheduling dump desired, open the output file. */
- if (sched_dump)
- sched_dump_file = open_dump_file (dump_base_name, ".sched");
-
- /* If local_reg dump desired, open the output file. */
- if (local_reg_dump)
- local_reg_dump_file = open_dump_file (dump_base_name, ".lreg");
-
- /* If global_reg dump desired, open the output file. */
- if (global_reg_dump)
- global_reg_dump_file = open_dump_file (dump_base_name, ".greg");
-
- /* If 2nd scheduling dump desired, open the output file. */
- if (sched2_dump)
- sched2_dump_file = open_dump_file (dump_base_name, ".sched2");
-
- /* If jump2_opt dump desired, open the output file. */
- if (jump2_opt_dump)
- jump2_opt_dump_file = open_dump_file (dump_base_name, ".jump2");
-
- /* If dbr_sched dump desired, open the output file. */
- if (dbr_sched_dump)
- dbr_sched_dump_file = open_dump_file (dump_base_name, ".dbr");
-
- #ifdef STACK_REGS
-
- /* If stack_reg dump desired, open the output file. */
- if (stack_reg_dump)
- stack_reg_dump_file = open_dump_file (dump_base_name, ".stack");
-
- #endif
-
- /* Open assembler code output file. */
-
- if (! name_specified && asm_file_name == 0)
- asm_out_file = stdout;
- else
- {
- int len = strlen (dump_base_name);
- register char *dumpname = (char *) xmalloc (len + 6);
- strcpy (dumpname, dump_base_name);
- strip_off_ending (dumpname, len);
- strcat (dumpname, ".s");
- if (asm_file_name == 0)
- {
- asm_file_name = (char *) xmalloc (strlen (dumpname) + 1);
- strcpy (asm_file_name, dumpname);
- }
- if (!strcmp (asm_file_name, "-"))
- asm_out_file = stdout;
- else
- asm_out_file = fopen (asm_file_name, "w");
- if (asm_out_file == 0)
- pfatal_with_name (asm_file_name);
- }
-
- #ifdef IO_BUFFER_SIZE
- setvbuf (asm_out_file, (char *) xmalloc (IO_BUFFER_SIZE),
- _IOFBF, IO_BUFFER_SIZE);
- #endif
-
- input_filename = name;
-
- /* Perform language-specific initialization.
- This may set main_input_filename. */
- lang_init ();
-
- /* If the input doesn't start with a #line, use the input name
- as the official input file name. */
- if (main_input_filename == 0)
- main_input_filename = name;
-
- /* Put an entry on the input file stack for the main input file. */
- input_file_stack
- = (struct file_stack *) xmalloc (sizeof (struct file_stack));
- input_file_stack->next = 0;
- input_file_stack->name = input_filename;
-
- if (!output_bytecode)
- {
- ASM_FILE_START (asm_out_file);
- }
-
- /* Output something to inform GDB that this compilation was by GCC. Also
- serves to tell GDB file consists of bytecodes. */
- if (output_bytecode)
- fprintf (asm_out_file, "bc_gcc2_compiled.:\n");
- else
- {
- #ifndef ASM_IDENTIFY_GCC
- fprintf (asm_out_file, "gcc2_compiled.:\n");
- #else
- ASM_IDENTIFY_GCC (asm_out_file);
- #endif
- }
-
- /* Output something to identify which front-end produced this file. */
- #ifdef ASM_IDENTIFY_LANGUAGE
- ASM_IDENTIFY_LANGUAGE (asm_out_file);
- #endif
-
- if (output_bytecode)
- {
- if (profile_flag || profile_block_flag)
- error ("profiling not supported in bytecode compilation");
- }
- else
- {
- /* ??? Note: There used to be a conditional here
- to call assemble_zeros without fail if DBX_DEBUGGING_INFO is defined.
- This was to guarantee separation between gcc_compiled. and
- the first function, for the sake of dbx on Suns.
- However, having the extra zero here confused the Emacs
- code for unexec, and might confuse other programs too.
- Therefore, I took out that change.
- In future versions we should find another way to solve
- that dbx problem. -- rms, 23 May 93. */
-
- /* Don't let the first function fall at the same address
- as gcc_compiled., if profiling. */
- if (profile_flag || profile_block_flag)
- assemble_zeros (UNITS_PER_WORD);
- }
-
- /* If dbx symbol table desired, initialize writing it
- and output the predefined types. */
- #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
- if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
- TIMEVAR (symout_time, dbxout_init (asm_out_file, main_input_filename,
- getdecls ()));
- #endif
- #ifdef SDB_DEBUGGING_INFO
- if (write_symbols == SDB_DEBUG)
- TIMEVAR (symout_time, sdbout_init (asm_out_file, main_input_filename,
- getdecls ()));
- #endif
- #ifdef DWARF_DEBUGGING_INFO
- if (write_symbols == DWARF_DEBUG)
- TIMEVAR (symout_time, dwarfout_init (asm_out_file, main_input_filename));
- #endif
-
- /* Initialize yet another pass. */
-
- if (!output_bytecode)
- init_final (main_input_filename);
-
- start_time = get_run_time ();
-
- /* Call the parser, which parses the entire file
- (calling rest_of_compilation for each function). */
-
- if (yyparse () != 0)
- {
- if (errorcount == 0)
- fprintf (stderr, "Errors detected in input file (your bison.simple is out of date)");
-
- /* In case there were missing closebraces,
- get us back to the global binding level. */
- while (! global_bindings_p ())
- poplevel (0, 0, 0);
- }
-
- /* Compilation is now finished except for writing
- what's left of the symbol table output. */
-
- parse_time += get_run_time () - start_time;
-
- parse_time -= integration_time;
- parse_time -= varconst_time;
-
- globals = getdecls ();
-
- /* Really define vars that have had only a tentative definition.
- Really output inline functions that must actually be callable
- and have not been output so far. */
-
- {
- int len = list_length (globals);
- tree *vec = (tree *) alloca (sizeof (tree) * len);
- int i;
- tree decl;
- int reconsider = 1;
-
- /* Process the decls in reverse order--earliest first.
- Put them into VEC from back to front, then take out from front. */
-
- for (i = 0, decl = globals; i < len; i++, decl = TREE_CHAIN (decl))
- vec[len - i - 1] = decl;
-
- for (i = 0; i < len; i++)
- {
- decl = vec[i];
-
- /* We're not deferring this any longer. */
- DECL_DEFER_OUTPUT (decl) = 0;
-
- if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0
- && incomplete_decl_finalize_hook != 0)
- (*incomplete_decl_finalize_hook) (decl);
- }
-
- /* Now emit any global variables or functions that we have been putting
- off. We need to loop in case one of the things emitted here
- references another one which comes earlier in the list. */
- while (reconsider)
- {
- reconsider = 0;
- for (i = 0; i < len; i++)
- {
- decl = vec[i];
-
- if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl))
- continue;
-
- /* Don't write out static consts, unless we still need them.
-
- We also keep static consts if not optimizing (for debugging).
- ??? They might be better written into the debug information.
- This is possible when using DWARF.
-
- A language processor that wants static constants to be always
- written out (even if it is not used) is responsible for
- calling rest_of_decl_compilation itself. E.g. the C front-end
- calls rest_of_decl_compilation from finish_decl.
- One motivation for this is that is conventional in some
- environments to write things like:
- static const char rcsid[] = "... version string ...";
- intending to force the string to be in the executable.
-
- A language processor that would prefer to have unneeded
- static constants "optimized away" would just defer writing
- them out until here. E.g. C++ does this, because static
- constants are often defined in header files.
-
- ??? A tempting alternative (for both C and C++) would be
- to force a constant to be written if and only if it is
- defined in a main file, as opposed to an include file. */
-
- if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)
- && (! TREE_READONLY (decl)
- || TREE_PUBLIC (decl)
- || !optimize
- || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
- {
- reconsider = 1;
- rest_of_decl_compilation (decl, NULL_PTR, 1, 1);
- }
-
- if (TREE_CODE (decl) == FUNCTION_DECL
- && DECL_INITIAL (decl) != 0
- && DECL_SAVED_INSNS (decl) != 0
- && (flag_keep_inline_functions
- || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
- {
- reconsider = 1;
- temporary_allocation ();
- output_inline_function (decl);
- permanent_allocation (1);
- }
- }
- }
-
- for (i = 0; i < len; i++)
- {
- decl = vec[i];
-
- if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)
- && ! TREE_ASM_WRITTEN (decl))
- /* Cancel the RTL for this decl so that, if debugging info
- output for global variables is still to come,
- this one will be omitted. */
- DECL_RTL (decl) = NULL;
-
- /* Warn about any function
- declared static but not defined.
- We don't warn about variables,
- because many programs have static variables
- that exist only to get some text into the object file. */
- if (TREE_CODE (decl) == FUNCTION_DECL
- && (warn_unused
- || TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
- && DECL_INITIAL (decl) == 0
- && DECL_EXTERNAL (decl)
- && ! TREE_PUBLIC (decl))
- {
- pedwarn_with_decl (decl,
- "`%s' declared `static' but never defined");
- /* This symbol is effectively an "extern" declaration now. */
- TREE_PUBLIC (decl) = 1;
- assemble_external (decl);
- }
-
- /* Warn about static fns or vars defined but not used,
- but not about inline functions or static consts
- since defining those in header files is normal practice. */
- if (warn_unused
- && ((TREE_CODE (decl) == FUNCTION_DECL && ! DECL_INLINE (decl))
- || (TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl)))
- && ! DECL_IN_SYSTEM_HEADER (decl)
- && ! DECL_EXTERNAL (decl)
- && ! TREE_PUBLIC (decl)
- && ! TREE_USED (decl)
- && ! DECL_REGISTER (decl)
- /* The TREE_USED bit for file-scope decls
- is kept in the identifier, to handle multiple
- external decls in different scopes. */
- && ! TREE_USED (DECL_NAME (decl)))
- warning_with_decl (decl, "`%s' defined but not used");
-
- #ifdef SDB_DEBUGGING_INFO
- /* The COFF linker can move initialized global vars to the end.
- And that can screw up the symbol ordering.
- By putting the symbols in that order to begin with,
- we avoid a problem. mcsun!unido!fauern!tumuc!pes@uunet.uu.net. */
- if (write_symbols == SDB_DEBUG && TREE_CODE (decl) == VAR_DECL
- && TREE_PUBLIC (decl) && DECL_INITIAL (decl)
- && ! DECL_EXTERNAL (decl)
- && DECL_RTL (decl) != 0)
- TIMEVAR (symout_time, sdbout_symbol (decl, 0));
-
- /* Output COFF information for non-global
- file-scope initialized variables. */
- if (write_symbols == SDB_DEBUG
- && TREE_CODE (decl) == VAR_DECL
- && DECL_INITIAL (decl)
- && ! DECL_EXTERNAL (decl)
- && DECL_RTL (decl) != 0
- && GET_CODE (DECL_RTL (decl)) == MEM)
- TIMEVAR (symout_time, sdbout_toplevel_data (decl));
- #endif /* SDB_DEBUGGING_INFO */
- #ifdef DWARF_DEBUGGING_INFO
- /* Output DWARF information for file-scope tentative data object
- declarations, file-scope (extern) function declarations (which
- had no corresponding body) and file-scope tagged type declarations
- and definitions which have not yet been forced out. */
-
- if (write_symbols == DWARF_DEBUG
- && (TREE_CODE (decl) != FUNCTION_DECL || !DECL_INITIAL (decl)))
- TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 1));
- #endif
- }
- }
-
- /* Do dbx symbols */
- #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
- if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
- TIMEVAR (symout_time,
- {
- dbxout_finish (asm_out_file, main_input_filename);
- });
- #endif
-
- #ifdef DWARF_DEBUGGING_INFO
- if (write_symbols == DWARF_DEBUG)
- TIMEVAR (symout_time,
- {
- dwarfout_finish ();
- });
- #endif
-
- /* Output some stuff at end of file if nec. */
-
- if (!output_bytecode)
- {
- end_final (main_input_filename);
-
- #ifdef ASM_FILE_END
- ASM_FILE_END (asm_out_file);
- #endif
- }
-
- /* Language-specific end of compilation actions. */
-
- lang_finish ();
-
- if (output_bytecode)
- bc_write_file (asm_out_file);
-
- /* Close the dump files. */
-
- if (flag_gen_aux_info)
- {
- fclose (aux_info_file);
- if (errorcount)
- unlink (aux_info_file_name);
- }
-
- if (rtl_dump)
- fclose (rtl_dump_file);
-
- if (jump_opt_dump)
- fclose (jump_opt_dump_file);
-
- if (cse_dump)
- fclose (cse_dump_file);
-
- if (loop_dump)
- fclose (loop_dump_file);
-
- if (cse2_dump)
- fclose (cse2_dump_file);
-
- if (flow_dump)
- fclose (flow_dump_file);
-
- if (combine_dump)
- {
- dump_combine_total_stats (combine_dump_file);
- fclose (combine_dump_file);
- }
-
- if (sched_dump)
- fclose (sched_dump_file);
-
- if (local_reg_dump)
- fclose (local_reg_dump_file);
-
- if (global_reg_dump)
- fclose (global_reg_dump_file);
-
- if (sched2_dump)
- fclose (sched2_dump_file);
-
- if (jump2_opt_dump)
- fclose (jump2_opt_dump_file);
-
- if (dbr_sched_dump)
- fclose (dbr_sched_dump_file);
-
- #ifdef STACK_REGS
- if (stack_reg_dump)
- fclose (stack_reg_dump_file);
- #endif
-
- /* Close non-debugging input and output files. Take special care to note
- whether fclose returns an error, since the pages might still be on the
- buffer chain while the file is open. */
-
- fclose (finput);
- if (ferror (asm_out_file) != 0 || fclose (asm_out_file) != 0)
- fatal_io_error (asm_file_name);
-
- /* Print the times. */
-
- if (! quiet_flag)
- {
- fprintf (stderr,"\n");
- print_time ("parse", parse_time);
-
- if (!output_bytecode)
- {
- print_time ("integration", integration_time);
- print_time ("jump", jump_time);
- print_time ("cse", cse_time);
- print_time ("loop", loop_time);
- print_time ("cse2", cse2_time);
- print_time ("flow", flow_time);
- print_time ("combine", combine_time);
- print_time ("sched", sched_time);
- print_time ("local-alloc", local_alloc_time);
- print_time ("global-alloc", global_alloc_time);
- print_time ("sched2", sched2_time);
- print_time ("dbranch", dbr_sched_time);
- print_time ("shorten-branch", shorten_branch_time);
- print_time ("stack-reg", stack_reg_time);
- print_time ("final", final_time);
- print_time ("varconst", varconst_time);
- print_time ("symout", symout_time);
- print_time ("dump", dump_time);
- }
- }
- }
-
- /* This is called from various places for FUNCTION_DECL, VAR_DECL,
- and TYPE_DECL nodes.
-
- This does nothing for local (non-static) variables.
- Otherwise, it sets up the RTL and outputs any assembler code
- (label definition, storage allocation and initialization).
-
- DECL is the declaration. If ASMSPEC is nonzero, it specifies
- the assembler symbol name to be used. TOP_LEVEL is nonzero
- if this declaration is not within a function. */
-
- void
- rest_of_decl_compilation (decl, asmspec, top_level, at_end)
- tree decl;
- char *asmspec;
- int top_level;
- int at_end;
- {
- /* Declarations of variables, and of functions defined elsewhere. */
-
- /* The most obvious approach, to put an #ifndef around where
- this macro is used, doesn't work since it's inside a macro call. */
- #ifndef ASM_FINISH_DECLARE_OBJECT
- #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP, END)
- #endif
-
- /* Forward declarations for nested functions are not "external",
- but we need to treat them as if they were. */
- if (TREE_STATIC (decl) || DECL_EXTERNAL (decl)
- || TREE_CODE (decl) == FUNCTION_DECL)
- TIMEVAR (varconst_time,
- {
- make_decl_rtl (decl, asmspec, top_level);
- /* Initialized extern variable exists to be replaced
- with its value, or represents something that will be
- output in another file. */
- if (! (TREE_CODE (decl) == VAR_DECL
- && DECL_EXTERNAL (decl) && TREE_READONLY (decl)
- && DECL_INITIAL (decl) != 0
- && DECL_INITIAL (decl) != error_mark_node))
- /* Don't output anything
- when a tentative file-scope definition is seen.
- But at end of compilation, do output code for them. */
- if (! (! at_end && top_level
- && (DECL_INITIAL (decl) == 0
- || DECL_INITIAL (decl) == error_mark_node)))
- assemble_variable (decl, top_level, at_end, 0);
- if (decl == last_assemble_variable_decl)
- {
- ASM_FINISH_DECLARE_OBJECT (asm_out_file, decl,
- top_level, at_end);
- }
- });
- else if (DECL_REGISTER (decl) && asmspec != 0)
- {
- if (decode_reg_name (asmspec) >= 0)
- {
- DECL_RTL (decl) = 0;
- make_decl_rtl (decl, asmspec, top_level);
- }
- else
- error ("invalid register name `%s' for register variable", asmspec);
- }
- #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
- else if ((write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
- && TREE_CODE (decl) == TYPE_DECL)
- TIMEVAR (symout_time, dbxout_symbol (decl, 0));
- #endif
- #ifdef SDB_DEBUGGING_INFO
- else if (write_symbols == SDB_DEBUG && top_level
- && TREE_CODE (decl) == TYPE_DECL)
- TIMEVAR (symout_time, sdbout_symbol (decl, 0));
- #endif
- }
-
- /* Called after finishing a record, union or enumeral type. */
-
- void
- rest_of_type_compilation (type, toplev)
- tree type;
- int toplev;
- {
- #if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
- if (write_symbols == DBX_DEBUG || write_symbols == XCOFF_DEBUG)
- TIMEVAR (symout_time, dbxout_symbol (TYPE_STUB_DECL (type), !toplev));
- #endif
- #ifdef SDB_DEBUGGING_INFO
- if (write_symbols == SDB_DEBUG)
- TIMEVAR (symout_time, sdbout_symbol (TYPE_STUB_DECL (type), !toplev));
- #endif
- }
-
- /* This is called from finish_function (within yyparse)
- after each top-level definition is parsed.
- It is supposed to compile that function or variable
- and output the assembler code for it.
- After we return, the tree storage is freed. */
-
- void
- rest_of_compilation (decl)
- tree decl;
- {
- register rtx insns;
- int start_time = get_run_time ();
- int tem;
- /* Nonzero if we have saved the original DECL_INITIAL of the function,
- to be restored after we finish compiling the function
- (for use when compiling inline calls to this function). */
- tree saved_block_tree = 0;
- /* Likewise, for DECL_ARGUMENTS. */
- tree saved_arguments = 0;
- int failure = 0;
-
- if (output_bytecode)
- return;
-
- /* If we are reconsidering an inline function
- at the end of compilation, skip the stuff for making it inline. */
-
- if (DECL_SAVED_INSNS (decl) == 0)
- {
- int specd = DECL_INLINE (decl);
- char *lose;
-
- /* If requested, consider whether to make this function inline. */
- if (specd || flag_inline_functions)
- TIMEVAR (integration_time,
- {
- lose = function_cannot_inline_p (decl);
- /* If not optimzing, then make sure the DECL_INLINE
- bit is off. */
- if (lose || ! optimize)
- {
- if (warn_inline && specd)
- warning_with_decl (decl, lose);
- DECL_INLINE (decl) = 0;
- /* Don't really compile an extern inline function.
- If we can't make it inline, pretend
- it was only declared. */
- if (DECL_EXTERNAL (decl))
- {
- DECL_INITIAL (decl) = 0;
- goto exit_rest_of_compilation;
- }
- }
- else
- DECL_INLINE (decl) = 1;
- });
-
- insns = get_insns ();
-
- /* Dump the rtl code if we are dumping rtl. */
-
- if (rtl_dump)
- TIMEVAR (dump_time,
- {
- fprintf (rtl_dump_file, "\n;; Function %s\n\n",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- if (DECL_SAVED_INSNS (decl))
- fprintf (rtl_dump_file, ";; (integrable)\n\n");
- print_rtl (rtl_dump_file, insns);
- fflush (rtl_dump_file);
- });
-
- /* If function is inline, and we don't yet know whether to
- compile it by itself, defer decision till end of compilation.
- finish_compilation will call rest_of_compilation again
- for those functions that need to be output. Also defer those
- functions that were marked inline but weren't inlined; they
- may never be used. */
-
- if ((specd || DECL_INLINE (decl))
- && ((! TREE_PUBLIC (decl) && ! TREE_ADDRESSABLE (decl)
- && ! flag_keep_inline_functions)
- || DECL_DEFER_OUTPUT (decl)
- || DECL_EXTERNAL (decl)))
- {
- #ifdef DWARF_DEBUGGING_INFO
- /* Generate the DWARF info for the "abstract" instance
- of a function which we may later generate inlined and/or
- out-of-line instances of. */
- if (write_symbols == DWARF_DEBUG)
- {
- set_decl_abstract_flags (decl, 1);
- TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0));
- set_decl_abstract_flags (decl, 0);
- }
- #endif
- TIMEVAR (integration_time, save_for_inline_nocopy (decl));
- goto exit_rest_of_compilation;
- }
-
- /* If we have to compile the function now, save its rtl and subdecls
- so that its compilation will not affect what others get. */
- if (DECL_INLINE (decl))
- {
- #ifdef DWARF_DEBUGGING_INFO
- /* Generate the DWARF info for the "abstract" instance of
- a function which we will generate an out-of-line instance
- of almost immediately (and which we may also later generate
- various inlined instances of). */
- if (write_symbols == DWARF_DEBUG)
- {
- set_decl_abstract_flags (decl, 1);
- TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0));
- set_decl_abstract_flags (decl, 0);
- }
- #endif
- saved_block_tree = DECL_INITIAL (decl);
- saved_arguments = DECL_ARGUMENTS (decl);
- TIMEVAR (integration_time, save_for_inline_copying (decl));
- }
- }
-
- if (DECL_DEFER_OUTPUT (decl))
- goto exit_rest_of_compilation;
-
- TREE_ASM_WRITTEN (decl) = 1;
-
- /* Now that integrate will no longer see our rtl, we need not distinguish
- between the return value of this function and the return value of called
- functions. */
- rtx_equal_function_value_matters = 0;
-
- /* Don't return yet if -Wreturn-type; we need to do jump_optimize. */
- if ((rtl_dump_and_exit || flag_syntax_only) && !warn_return_type)
- {
- goto exit_rest_of_compilation;
- }
-
- /* From now on, allocate rtl in current_obstack, not in saveable_obstack.
- Note that that may have been done above, in save_for_inline_copying.
- The call to resume_temporary_allocation near the end of this function
- goes back to the usual state of affairs. */
-
- rtl_in_current_obstack ();
-
- #ifdef FINALIZE_PIC
- /* If we are doing position-independent code generation, now
- is the time to output special prologues and epilogues.
- We do not want to do this earlier, because it just clutters
- up inline functions with meaningless insns. */
- if (flag_pic)
- FINALIZE_PIC;
- #endif
-
- insns = get_insns ();
-
- /* Copy any shared structure that should not be shared. */
-
- unshare_all_rtl (insns);
-
- /* Instantiate all virtual registers. */
-
- instantiate_virtual_regs (current_function_decl, get_insns ());
-
- /* See if we have allocated stack slots that are not directly addressable.
- If so, scan all the insns and create explicit address computation
- for all references to such slots. */
- /* fixup_stack_slots (); */
-
- /* Do jump optimization the first time, if -opt.
- Also do it if -W, but in that case it doesn't change the rtl code,
- it only computes whether control can drop off the end of the function. */
-
- if (optimize > 0 || extra_warnings || warn_return_type
- /* If function is `noreturn', we should warn if it tries to return. */
- || TREE_THIS_VOLATILE (decl))
- {
- TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0));
- TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 1));
- }
-
- /* Now is when we stop if -fsyntax-only and -Wreturn-type. */
- if (rtl_dump_and_exit || flag_syntax_only)
- goto exit_rest_of_compilation;
-
- /* Dump rtl code after jump, if we are doing that. */
-
- if (jump_opt_dump)
- TIMEVAR (dump_time,
- {
- fprintf (jump_opt_dump_file, "\n;; Function %s\n\n",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- print_rtl (jump_opt_dump_file, insns);
- fflush (jump_opt_dump_file);
- });
-
- /* Perform common subexpression elimination.
- Nonzero value from `cse_main' means that jumps were simplified
- and some code may now be unreachable, so do
- jump optimization again. */
-
- if (cse_dump)
- TIMEVAR (dump_time,
- {
- fprintf (cse_dump_file, "\n;; Function %s\n\n",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- });
-
- if (optimize > 0)
- {
- TIMEVAR (cse_time, reg_scan (insns, max_reg_num (), 1));
-
- if (flag_thread_jumps)
- /* Hacks by tiemann & kenner. */
- TIMEVAR (jump_time, thread_jumps (insns, max_reg_num (), 1));
-
- TIMEVAR (cse_time, tem = cse_main (insns, max_reg_num (),
- 0, cse_dump_file));
- TIMEVAR (cse_time, delete_dead_from_cse (insns, max_reg_num ()));
-
- if (tem)
- TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 0));
- }
-
- /* Dump rtl code after cse, if we are doing that. */
-
- if (cse_dump)
- TIMEVAR (dump_time,
- {
- print_rtl (cse_dump_file, insns);
- fflush (cse_dump_file);
- });
-
- if (loop_dump)
- TIMEVAR (dump_time,
- {
- fprintf (loop_dump_file, "\n;; Function %s\n\n",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- });
-
- /* Move constant computations out of loops. */
-
- if (optimize > 0)
- {
- TIMEVAR (loop_time,
- {
- loop_optimize (insns, loop_dump_file);
- });
- }
-
- /* Dump rtl code after loop opt, if we are doing that. */
-
- if (loop_dump)
- TIMEVAR (dump_time,
- {
- print_rtl (loop_dump_file, insns);
- fflush (loop_dump_file);
- });
-
- if (cse2_dump)
- TIMEVAR (dump_time,
- {
- fprintf (cse2_dump_file, "\n;; Function %s\n\n",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- });
-
- if (optimize > 0 && flag_rerun_cse_after_loop)
- {
- /* Running another jump optimization pass before the second
- cse pass sometimes simplifies the RTL enough to allow
- the second CSE pass to do a better job. Jump_optimize can change
- max_reg_num so we must rerun reg_scan afterwards.
- ??? Rework to not call reg_scan so often. */
- TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0));
- TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 1));
-
- TIMEVAR (cse2_time, reg_scan (insns, max_reg_num (), 0));
- TIMEVAR (cse2_time, tem = cse_main (insns, max_reg_num (),
- 1, cse2_dump_file));
- if (tem)
- TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 0));
- }
-
- if (optimize > 0 && flag_thread_jumps)
- /* This pass of jump threading straightens out code
- that was kinked by loop optimization. */
- TIMEVAR (jump_time, thread_jumps (insns, max_reg_num (), 0));
-
- /* Dump rtl code after cse, if we are doing that. */
-
- if (cse2_dump)
- TIMEVAR (dump_time,
- {
- print_rtl (cse2_dump_file, insns);
- fflush (cse2_dump_file);
- });
-
- /* We are no longer anticipating cse in this function, at least. */
-
- cse_not_expected = 1;
-
- /* Now we choose between stupid (pcc-like) register allocation
- (if we got the -noreg switch and not -opt)
- and smart register allocation. */
-
- if (optimize > 0) /* Stupid allocation probably won't work */
- obey_regdecls = 0; /* if optimizations being done. */
-
- regclass_init ();
-
- /* Print function header into flow dump now
- because doing the flow analysis makes some of the dump. */
-
- if (flow_dump)
- TIMEVAR (dump_time,
- {
- fprintf (flow_dump_file, "\n;; Function %s\n\n",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- });
-
- if (obey_regdecls)
- {
- TIMEVAR (flow_time,
- {
- regclass (insns, max_reg_num ());
- stupid_life_analysis (insns, max_reg_num (),
- flow_dump_file);
- });
- }
- else
- {
- /* Do control and data flow analysis,
- and write some of the results to dump file. */
-
- TIMEVAR (flow_time, flow_analysis (insns, max_reg_num (),
- flow_dump_file));
- if (warn_uninitialized)
- {
- uninitialized_vars_warning (DECL_INITIAL (decl));
- setjmp_args_warning ();
- }
- }
-
- /* Dump rtl after flow analysis. */
-
- if (flow_dump)
- TIMEVAR (dump_time,
- {
- print_rtl (flow_dump_file, insns);
- fflush (flow_dump_file);
- });
-
- /* If -opt, try combining insns through substitution. */
-
- if (optimize > 0)
- TIMEVAR (combine_time, combine_instructions (insns, max_reg_num ()));
-
- /* Dump rtl code after insn combination. */
-
- if (combine_dump)
- TIMEVAR (dump_time,
- {
- fprintf (combine_dump_file, "\n;; Function %s\n\n",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- dump_combine_stats (combine_dump_file);
- print_rtl (combine_dump_file, insns);
- fflush (combine_dump_file);
- });
-
- /* Print function header into sched dump now
- because doing the sched analysis makes some of the dump. */
-
- if (sched_dump)
- TIMEVAR (dump_time,
- {
- fprintf (sched_dump_file, "\n;; Function %s\n\n",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- });
-
- if (optimize > 0 && flag_schedule_insns)
- {
- /* Do control and data sched analysis,
- and write some of the results to dump file. */
-
- TIMEVAR (sched_time, schedule_insns (sched_dump_file));
- }
-
- /* Dump rtl after instruction scheduling. */
-
- if (sched_dump)
- TIMEVAR (dump_time,
- {
- print_rtl (sched_dump_file, insns);
- fflush (sched_dump_file);
- });
-
- /* Unless we did stupid register allocation,
- allocate pseudo-regs that are used only within 1 basic block. */
-
- if (!obey_regdecls)
- TIMEVAR (local_alloc_time,
- {
- regclass (insns, max_reg_num ());
- local_alloc ();
- });
-
- /* Dump rtl code after allocating regs within basic blocks. */
-
- if (local_reg_dump)
- TIMEVAR (dump_time,
- {
- fprintf (local_reg_dump_file, "\n;; Function %s\n\n",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- dump_flow_info (local_reg_dump_file);
- dump_local_alloc (local_reg_dump_file);
- print_rtl (local_reg_dump_file, insns);
- fflush (local_reg_dump_file);
- });
-
- if (global_reg_dump)
- TIMEVAR (dump_time,
- fprintf (global_reg_dump_file, "\n;; Function %s\n\n",
- IDENTIFIER_POINTER (DECL_NAME (decl))));
-
- /* Unless we did stupid register allocation,
- allocate remaining pseudo-regs, then do the reload pass
- fixing up any insns that are invalid. */
-
- TIMEVAR (global_alloc_time,
- {
- if (!obey_regdecls)
- failure = global_alloc (global_reg_dump_file);
- else
- failure = reload (insns, 0, global_reg_dump_file);
- });
-
- if (global_reg_dump)
- TIMEVAR (dump_time,
- {
- dump_global_regs (global_reg_dump_file);
- print_rtl (global_reg_dump_file, insns);
- fflush (global_reg_dump_file);
- });
-
- if (failure)
- goto exit_rest_of_compilation;
-
- reload_completed = 1;
-
- /* On some machines, the prologue and epilogue code, or parts thereof,
- can be represented as RTL. Doing so lets us schedule insns between
- it and the rest of the code and also allows delayed branch
- scheduling to operate in the epilogue. */
-
- thread_prologue_and_epilogue_insns (insns);
-
- if (optimize > 0 && flag_schedule_insns_after_reload)
- {
- if (sched2_dump)
- TIMEVAR (dump_time,
- {
- fprintf (sched2_dump_file, "\n;; Function %s\n\n",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- });
-
- /* Do control and data sched analysis again,
- and write some more of the results to dump file. */
-
- TIMEVAR (sched2_time, schedule_insns (sched2_dump_file));
-
- /* Dump rtl after post-reorder instruction scheduling. */
-
- if (sched2_dump)
- TIMEVAR (dump_time,
- {
- print_rtl (sched2_dump_file, insns);
- fflush (sched2_dump_file);
- });
- }
-
- #ifdef LEAF_REGISTERS
- leaf_function = 0;
- if (optimize > 0 && only_leaf_regs_used () && leaf_function_p ())
- leaf_function = 1;
- #endif
-
- /* One more attempt to remove jumps to .+1
- left by dead-store-elimination.
- Also do cross-jumping this time
- and delete no-op move insns. */
-
- if (optimize > 0)
- {
- TIMEVAR (jump_time, jump_optimize (insns, 1, 1, 0));
- }
-
- /* Dump rtl code after jump, if we are doing that. */
-
- if (jump2_opt_dump)
- TIMEVAR (dump_time,
- {
- fprintf (jump2_opt_dump_file, "\n;; Function %s\n\n",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- print_rtl (jump2_opt_dump_file, insns);
- fflush (jump2_opt_dump_file);
- });
-
- /* If a machine dependent reorganization is needed, call it. */
- #ifdef MACHINE_DEPENDENT_REORG
- MACHINE_DEPENDENT_REORG (insns);
- #endif
-
- /* If a scheduling pass for delayed branches is to be done,
- call the scheduling code. */
-
- #ifdef DELAY_SLOTS
- if (optimize > 0 && flag_delayed_branch)
- {
- TIMEVAR (dbr_sched_time, dbr_schedule (insns, dbr_sched_dump_file));
- if (dbr_sched_dump)
- {
- TIMEVAR (dump_time,
- {
- fprintf (dbr_sched_dump_file, "\n;; Function %s\n\n",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- print_rtl (dbr_sched_dump_file, insns);
- fflush (dbr_sched_dump_file);
- });
- }
- }
- #endif
-
- if (optimize > 0)
- /* Shorten branches. */
- TIMEVAR (shorten_branch_time,
- {
- shorten_branches (get_insns ());
- });
-
- #ifdef STACK_REGS
- TIMEVAR (stack_reg_time, reg_to_stack (insns, stack_reg_dump_file));
- if (stack_reg_dump)
- {
- TIMEVAR (dump_time,
- {
- fprintf (stack_reg_dump_file, "\n;; Function %s\n\n",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- print_rtl (stack_reg_dump_file, insns);
- fflush (stack_reg_dump_file);
- });
- }
- #endif
-
- /* Now turn the rtl into assembler code. */
-
- TIMEVAR (final_time,
- {
- rtx x;
- char *fnname;
-
- /* Get the function's name, as described by its RTL.
- This may be different from the DECL_NAME name used
- in the source file. */
-
- x = DECL_RTL (decl);
- if (GET_CODE (x) != MEM)
- abort ();
- x = XEXP (x, 0);
- if (GET_CODE (x) != SYMBOL_REF)
- abort ();
- fnname = XSTR (x, 0);
-
- assemble_start_function (decl, fnname);
- final_start_function (insns, asm_out_file, optimize);
- final (insns, asm_out_file, optimize, 0);
- final_end_function (insns, asm_out_file, optimize);
- assemble_end_function (decl, fnname);
- fflush (asm_out_file);
- });
-
- /* Write DBX symbols if requested */
-
- /* Note that for those inline functions where we don't initially
- know for certain that we will be generating an out-of-line copy,
- the first invocation of this routine (rest_of_compilation) will
- skip over this code by doing a `goto exit_rest_of_compilation;'.
- Later on, finish_compilation will call rest_of_compilation again
- for those inline functions that need to have out-of-line copies
- generated. During that call, we *will* be routed past here. */
-
- #ifdef DBX_DEBUGGING_INFO
- if (write_symbols == DBX_DEBUG)
- TIMEVAR (symout_time, dbxout_function (decl));
- #endif
-
- #ifdef DWARF_DEBUGGING_INFO
- if (write_symbols == DWARF_DEBUG)
- TIMEVAR (symout_time, dwarfout_file_scope_decl (decl, 0));
- #endif
-
- exit_rest_of_compilation:
-
- /* In case the function was not output,
- don't leave any temporary anonymous types
- queued up for sdb output. */
- #ifdef SDB_DEBUGGING_INFO
- if (write_symbols == SDB_DEBUG)
- sdbout_types (NULL_TREE);
- #endif
-
- /* Put back the tree of subblocks and list of arguments
- from before we copied them.
- Code generation and the output of debugging info may have modified
- the copy, but the original is unchanged. */
-
- if (saved_block_tree != 0)
- DECL_INITIAL (decl) = saved_block_tree;
- if (saved_arguments != 0)
- DECL_ARGUMENTS (decl) = saved_arguments;
-
- reload_completed = 0;
-
- /* Clear out the real_constant_chain before some of the rtx's
- it runs through become garbage. */
-
- clear_const_double_mem ();
-
- /* Cancel the effect of rtl_in_current_obstack. */
-
- resume_temporary_allocation ();
-
- /* The parsing time is all the time spent in yyparse
- *except* what is spent in this function. */
-
- parse_time -= get_run_time () - start_time;
- }
-
- /* Entry point of cc1/c++. Decode command args, then call compile_file.
- Exit code is 35 if can't open files, 34 if fatal error,
- 33 if had nonfatal errors, else success. */
-
- int
- main (argc, argv, envp)
- int argc;
- char **argv;
- char **envp;
- {
- register int i;
- char *filename = 0;
- int flag_print_mem = 0;
- int version_flag = 0;
- char *p;
-
- /* save in case md file wants to emit args as a comment. */
- save_argc = argc;
- save_argv = argv;
-
- p = argv[0] + strlen (argv[0]);
- while (p != argv[0] && p[-1] != '/') --p;
- progname = p;
-
- #ifdef RLIMIT_STACK
- /* Get rid of any avoidable limit on stack size. */
- {
- struct rlimit rlim;
-
- /* Set the stack limit huge so that alloca does not fail. */
- getrlimit (RLIMIT_STACK, &rlim);
- rlim.rlim_cur = rlim.rlim_max;
- setrlimit (RLIMIT_STACK, &rlim);
- }
- #endif /* RLIMIT_STACK */
-
- signal (SIGFPE, float_signal);
-
- #ifdef SIGPIPE
- signal (SIGPIPE, pipe_closed);
- #endif
-
- decl_printable_name = decl_name;
- lang_expand_expr = (struct rtx_def *(*)()) do_abort;
- interim_eh_hook = interim_eh;
-
- /* Initialize whether `char' is signed. */
- flag_signed_char = DEFAULT_SIGNED_CHAR;
- #ifdef DEFAULT_SHORT_ENUMS
- /* Initialize how much space enums occupy, by default. */
- flag_short_enums = DEFAULT_SHORT_ENUMS;
- #endif
-
- /* Scan to see what optimization level has been specified. That will
- determine the default value of many flags. */
- for (i = 1; i < argc; i++)
- {
- if (!strcmp (argv[i], "-O"))
- {
- optimize = 1;
- }
- else if (argv[i][0] == '-' && argv[i][1] == 'O')
- {
- /* Handle -O2, -O3, -O69, ... */
- char *p = &argv[i][2];
- int c;
-
- while (c = *p++)
- if (! (c >= '0' && c <= '9'))
- break;
- if (c == 0)
- optimize = atoi (&argv[i][2]);
- }
- }
-
- obey_regdecls = (optimize == 0);
- if (optimize == 0)
- {
- flag_no_inline = 1;
- warn_inline = 0;
- }
-
- if (optimize >= 1)
- {
- flag_defer_pop = 1;
- flag_thread_jumps = 1;
- #ifdef DELAY_SLOTS
- flag_delayed_branch = 1;
- #endif
- #ifdef CAN_DEBUG_WITHOUT_FP
- flag_omit_frame_pointer = 1;
- #endif
- }
-
- if (optimize >= 2)
- {
- flag_cse_follow_jumps = 1;
- flag_cse_skip_blocks = 1;
- flag_expensive_optimizations = 1;
- flag_strength_reduce = 1;
- flag_rerun_cse_after_loop = 1;
- flag_caller_saves = 1;
- #ifdef INSN_SCHEDULING
- flag_schedule_insns = 1;
- flag_schedule_insns_after_reload = 1;
- #endif
- }
-
- if (optimize >= 3)
- {
- flag_inline_functions = 1;
- }
-
- #ifdef OPTIMIZATION_OPTIONS
- /* Allow default optimizations to be specified on a per-machine basis. */
- OPTIMIZATION_OPTIONS (optimize);
- #endif
-
- /* Initialize register usage now so switches may override. */
- init_reg_sets ();
-
- target_flags = 0;
- set_target_switch ("");
-
- for (i = 1; i < argc; i++)
- {
- int j;
- /* If this is a language-specific option,
- decode it in a language-specific way. */
- for (j = 0; lang_options[j] != 0; j++)
- if (!strncmp (argv[i], lang_options[j],
- strlen (lang_options[j])))
- break;
- if (lang_options[j] != 0)
- /* If the option is valid for *some* language,
- treat it as valid even if this language doesn't understand it. */
- lang_decode_option (argv[i]);
- else if (argv[i][0] == '-' && argv[i][1] != 0)
- {
- register char *str = argv[i] + 1;
- if (str[0] == 'Y')
- str++;
-
- if (str[0] == 'm')
- set_target_switch (&str[1]);
- else if (!strcmp (str, "dumpbase"))
- {
- dump_base_name = argv[++i];
- }
- else if (str[0] == 'd')
- {
- register char *p = &str[1];
- while (*p)
- switch (*p++)
- {
- case 'a':
- combine_dump = 1;
- dbr_sched_dump = 1;
- flow_dump = 1;
- global_reg_dump = 1;
- jump_opt_dump = 1;
- jump2_opt_dump = 1;
- local_reg_dump = 1;
- loop_dump = 1;
- rtl_dump = 1;
- cse_dump = 1, cse2_dump = 1;
- sched_dump = 1;
- sched2_dump = 1;
- stack_reg_dump = 1;
- break;
- case 'k':
- stack_reg_dump = 1;
- break;
- case 'c':
- combine_dump = 1;
- break;
- case 'd':
- dbr_sched_dump = 1;
- break;
- case 'f':
- flow_dump = 1;
- break;
- case 'g':
- global_reg_dump = 1;
- break;
- case 'j':
- jump_opt_dump = 1;
- break;
- case 'J':
- jump2_opt_dump = 1;
- break;
- case 'l':
- local_reg_dump = 1;
- break;
- case 'L':
- loop_dump = 1;
- break;
- case 'm':
- flag_print_mem = 1;
- break;
- case 'p':
- flag_print_asm_name = 1;
- break;
- case 'r':
- rtl_dump = 1;
- break;
- case 's':
- cse_dump = 1;
- break;
- case 't':
- cse2_dump = 1;
- break;
- case 'S':
- sched_dump = 1;
- break;
- case 'R':
- sched2_dump = 1;
- break;
- case 'y':
- set_yydebug (1);
- break;
-
- case 'x':
- rtl_dump_and_exit = 1;
- break;
- }
- }
- else if (str[0] == 'f')
- {
- register char *p = &str[1];
- int found = 0;
-
- /* Some kind of -f option.
- P's value is the option sans `-f'.
- Search for it in the table of options. */
-
- for (j = 0;
- !found && j < sizeof (f_options) / sizeof (f_options[0]);
- j++)
- {
- if (!strcmp (p, f_options[j].string))
- {
- *f_options[j].variable = f_options[j].on_value;
- /* A goto here would be cleaner,
- but breaks the vax pcc. */
- found = 1;
- }
- if (p[0] == 'n' && p[1] == 'o' && p[2] == '-'
- && ! strcmp (p+3, f_options[j].string))
- {
- *f_options[j].variable = ! f_options[j].on_value;
- found = 1;
- }
- }
-
- if (found)
- ;
- else if (!strncmp (p, "fixed-", 6))
- fix_register (&p[6], 1, 1);
- else if (!strncmp (p, "call-used-", 10))
- fix_register (&p[10], 0, 1);
- else if (!strncmp (p, "call-saved-", 11))
- fix_register (&p[11], 0, 0);
- else
- error ("Invalid option `%s'", argv[i]);
- }
- else if (str[0] == 'O')
- {
- register char *p = str+1;
- while (*p && *p >= '0' && *p <= '9')
- p++;
- if (*p == '\0')
- ;
- else
- error ("Invalid option `%s'", argv[i]);
- }
- else if (!strcmp (str, "pedantic"))
- pedantic = 1;
- else if (!strcmp (str, "pedantic-errors"))
- flag_pedantic_errors = pedantic = 1;
- else if (!strcmp (str, "quiet"))
- quiet_flag = 1;
- else if (!strcmp (str, "version"))
- version_flag = 1;
- else if (!strcmp (str, "w"))
- inhibit_warnings = 1;
- else if (!strcmp (str, "W"))
- {
- extra_warnings = 1;
- /* We save the value of warn_uninitialized, since if they put
- -Wuninitialized on the command line, we need to generate a
- warning about not using it without also specifying -O. */
- if (warn_uninitialized != 1)
- warn_uninitialized = 2;
- }
- else if (str[0] == 'W')
- {
- register char *p = &str[1];
- int found = 0;
-
- /* Some kind of -W option.
- P's value is the option sans `-W'.
- Search for it in the table of options. */
-
- for (j = 0;
- !found && j < sizeof (W_options) / sizeof (W_options[0]);
- j++)
- {
- if (!strcmp (p, W_options[j].string))
- {
- *W_options[j].variable = W_options[j].on_value;
- /* A goto here would be cleaner,
- but breaks the vax pcc. */
- found = 1;
- }
- if (p[0] == 'n' && p[1] == 'o' && p[2] == '-'
- && ! strcmp (p+3, W_options[j].string))
- {
- *W_options[j].variable = ! W_options[j].on_value;
- found = 1;
- }
- }
-
- if (found)
- ;
- else if (!strncmp (p, "id-clash-", 9))
- {
- char *endp = p + 9;
-
- while (*endp)
- {
- if (*endp >= '0' && *endp <= '9')
- endp++;
- else
- {
- error ("Invalid option `%s'", argv[i]);
- goto id_clash_lose;
- }
- }
- warn_id_clash = 1;
- id_clash_len = atoi (str + 10);
- id_clash_lose: ;
- }
- else if (!strncmp (p, "larger-than-", 12))
- {
- char *endp = p + 12;
-
- while (*endp)
- {
- if (*endp >= '0' && *endp <= '9')
- endp++;
- else
- {
- error ("Invalid option `%s'", argv[i]);
- goto larger_than_lose;
- }
- }
- warn_larger_than = 1;
- larger_than_size = atoi (str + 13);
- larger_than_lose: ;
- }
- else
- error ("Invalid option `%s'", argv[i]);
- }
- else if (!strcmp (str, "p"))
- {
- if (!output_bytecode)
- profile_flag = 1;
- else
- error ("profiling not supported in bytecode compilation");
- }
- else if (!strcmp (str, "a"))
- {
- #if !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
- warning ("`-a' option (basic block profile) not supported");
- #else
- profile_block_flag = 1;
- #endif
- }
- else if (str[0] == 'g')
- {
- char *p = str + 1;
- char *q;
- unsigned len;
- unsigned level;
-
- while (*p && (*p < '0' || *p > '9'))
- p++;
- len = p - str;
- q = p;
- while (*q && (*q >= '0' && *q <= '9'))
- q++;
- if (*p)
- level = atoi (p);
- else
- level = 2; /* default debugging info level */
- if (*q || level > 3)
- {
- warning ("invalid debug level specification in option: `-%s'",
- str);
- warning ("no debugging information will be generated");
- level = 0;
- }
-
- /* If more than one debugging type is supported,
- you must define PREFERRED_DEBUGGING_TYPE
- to choose a format in a system-dependent way. */
- /* This is one long line cause VAXC can't handle a \-newline. */
- #if 1 < (defined (DBX_DEBUGGING_INFO) + defined (SDB_DEBUGGING_INFO) + defined (DWARF_DEBUGGING_INFO) + defined (XCOFF_DEBUGGING_INFO))
- #ifdef PREFERRED_DEBUGGING_TYPE
- if (!strncmp (str, "ggdb", len))
- write_symbols = PREFERRED_DEBUGGING_TYPE;
- #else /* no PREFERRED_DEBUGGING_TYPE */
- You Lose! You must define PREFERRED_DEBUGGING_TYPE!
- #endif /* no PREFERRED_DEBUGGING_TYPE */
- #endif /* More than one debugger format enabled. */
- #ifdef DBX_DEBUGGING_INFO
- if (write_symbols != NO_DEBUG)
- ;
- else if (!strncmp (str, "ggdb", len))
- write_symbols = DBX_DEBUG;
- else if (!strncmp (str, "gstabs", len))
- write_symbols = DBX_DEBUG;
- else if (!strncmp (str, "gstabs+", len))
- write_symbols = DBX_DEBUG;
-
- /* Always enable extensions for -ggdb or -gstabs+,
- always disable for -gstabs.
- For plain -g, use system-specific default. */
- if (write_symbols == DBX_DEBUG && !strncmp (str, "ggdb", len)
- && len >= 2)
- use_gnu_debug_info_extensions = 1;
- else if (write_symbols == DBX_DEBUG && !strncmp (str, "gstabs+", len)
- && len >= 7)
- use_gnu_debug_info_extensions = 1;
- else if (write_symbols == DBX_DEBUG
- && !strncmp (str, "gstabs", len) && len >= 2)
- use_gnu_debug_info_extensions = 0;
- else
- use_gnu_debug_info_extensions = DEFAULT_GDB_EXTENSIONS;
- #endif /* DBX_DEBUGGING_INFO */
- #ifdef DWARF_DEBUGGING_INFO
- if (write_symbols != NO_DEBUG)
- ;
- else if (!strncmp (str, "g", len))
- write_symbols = DWARF_DEBUG;
- else if (!strncmp (str, "ggdb", len))
- write_symbols = DWARF_DEBUG;
- else if (!strncmp (str, "gdwarf", len))
- write_symbols = DWARF_DEBUG;
-
- /* Always enable extensions for -ggdb or -gdwarf+,
- always disable for -gdwarf.
- For plain -g, use system-specific default. */
- if (write_symbols == DWARF_DEBUG && !strncmp (str, "ggdb", len)
- && len >= 2)
- use_gnu_debug_info_extensions = 1;
- else if (write_symbols == DWARF_DEBUG && !strcmp (str, "gdwarf+"))
- use_gnu_debug_info_extensions = 1;
- else if (write_symbols == DWARF_DEBUG
- && !strncmp (str, "gdwarf", len) && len >= 2)
- use_gnu_debug_info_extensions = 0;
- else
- use_gnu_debug_info_extensions = DEFAULT_GDB_EXTENSIONS;
- #endif
- #ifdef SDB_DEBUGGING_INFO
- if (write_symbols != NO_DEBUG)
- ;
- else if (!strncmp (str, "g", len))
- write_symbols = SDB_DEBUG;
- else if (!strncmp (str, "gdb", len))
- write_symbols = SDB_DEBUG;
- else if (!strncmp (str, "gcoff", len))
- write_symbols = SDB_DEBUG;
- #endif /* SDB_DEBUGGING_INFO */
- #ifdef XCOFF_DEBUGGING_INFO
- if (write_symbols != NO_DEBUG)
- ;
- else if (!strncmp (str, "g", len))
- write_symbols = XCOFF_DEBUG;
- else if (!strncmp (str, "ggdb", len))
- write_symbols = XCOFF_DEBUG;
- else if (!strncmp (str, "gxcoff", len))
- write_symbols = XCOFF_DEBUG;
-
- /* Always enable extensions for -ggdb or -gxcoff+,
- always disable for -gxcoff.
- For plain -g, use system-specific default. */
- if (write_symbols == XCOFF_DEBUG && !strncmp (str, "ggdb", len)
- && len >= 2)
- use_gnu_debug_info_extensions = 1;
- else if (write_symbols == XCOFF_DEBUG && !strcmp (str, "gxcoff+"))
- use_gnu_debug_info_extensions = 1;
- else if (write_symbols == XCOFF_DEBUG
- && !strncmp (str, "gxcoff", len) && len >= 2)
- use_gnu_debug_info_extensions = 0;
- else
- use_gnu_debug_info_extensions = DEFAULT_GDB_EXTENSIONS;
- #endif
- if (write_symbols == NO_DEBUG)
- warning ("`-%s' option not supported on this version of GCC", str);
- else if (level == 0)
- write_symbols = NO_DEBUG;
- else
- debug_info_level = (enum debug_info_level) level;
- }
- else if (!strcmp (str, "o"))
- {
- asm_file_name = argv[++i];
- }
- else if (str[0] == 'G')
- {
- g_switch_set = TRUE;
- g_switch_value = atoi ((str[1] != '\0') ? str+1 : argv[++i]);
- }
- else if (!strncmp (str, "aux-info", 8))
- {
- flag_gen_aux_info = 1;
- aux_info_file_name = (str[8] != '\0' ? str+8 : argv[++i]);
- }
- else
- error ("Invalid option `%s'", argv[i]);
- }
- else if (argv[i][0] == '+')
- error ("Invalid option `%s'", argv[i]);
- else
- filename = argv[i];
- }
-
- /* Initialize for bytecode output. A good idea to do this as soon as
- possible after the "-f" options have been parsed. */
- if (output_bytecode)
- {
- #ifndef TARGET_SUPPORTS_BYTECODE
- /* Just die with a fatal error if not supported */
- fatal ("-fbytecode not supporter for this target");
- #else
- bc_initialize ();
- #endif
- }
-
- if (optimize == 0)
- {
- /* Inlining does not work if not optimizing,
- so force it not to be done. */
- flag_no_inline = 1;
- warn_inline = 0;
-
- /* The c_decode_option and lang_decode_option functions set
- this to `2' if -Wall is used, so we can avoid giving out
- lots of errors for people who don't realize what -Wall does. */
- if (warn_uninitialized == 1)
- warning ("-Wuninitialized is not supported without -O");
- }
-
- #if defined(DWARF_DEBUGGING_INFO)
- if (write_symbols == DWARF_DEBUG
- && strcmp (language_string, "GNU C++") == 0)
- {
- warning ("-g option not supported for C++ on SVR4 systems");
- write_symbols = NO_DEBUG;
- }
- #endif /* defined(DWARF_DEBUGGING_INFO) */
-
- #ifdef OVERRIDE_OPTIONS
- /* Some machines may reject certain combinations of options. */
- OVERRIDE_OPTIONS;
- #endif
-
- /* Unrolling all loops implies that standard loop unrolling must also
- be done. */
- if (flag_unroll_all_loops)
- flag_unroll_loops = 1;
- /* Loop unrolling requires that strength_reduction be on also. Silently
- turn on strength reduction here if it isn't already on. Also, the loop
- unrolling code assumes that cse will be run after loop, so that must
- be turned on also. */
- if (flag_unroll_loops)
- {
- flag_strength_reduce = 1;
- flag_rerun_cse_after_loop = 1;
- }
-
- /* Warn about options that are not supported on this machine. */
- #ifndef INSN_SCHEDULING
- if (flag_schedule_insns || flag_schedule_insns_after_reload)
- warning ("instruction scheduling not supported on this target machine");
- #endif
- #ifndef DELAY_SLOTS
- if (flag_delayed_branch)
- warning ("this target machine does not have delayed branches");
- #endif
-
- /* If we are in verbose mode, write out the version and maybe all the
- option flags in use. */
- if (version_flag)
- {
- fprintf (stderr, "%s version %s", language_string, version_string);
- #ifdef TARGET_VERSION
- TARGET_VERSION;
- #endif
- #ifdef __GNUC__
- #ifndef __VERSION__
- #define __VERSION__ "[unknown]"
- #endif
- fprintf (stderr, " compiled by GNU C version %s.\n", __VERSION__);
- #else
- fprintf (stderr, " compiled by CC.\n");
- #endif
- if (! quiet_flag)
- print_switch_values ();
- }
-
- compile_file (filename);
-
- #ifndef OS2
- #ifndef VMS
- #ifndef amigados
- if (flag_print_mem)
- {
- #ifdef __alpha
- char *sbrk ();
- #endif
- char *lim = (char *) sbrk (0);
-
- fprintf (stderr, "Data size %d.\n",
- lim - (char *) &environ);
- fflush (stderr);
-
- #ifdef USG
- system ("ps -l 1>&2");
- #else /* not USG */
- system ("ps v");
- #endif /* not USG */
- }
- #endif /* not amigados */
- #endif /* not VMS */
- #endif /* not OS2 */
-
- if (errorcount)
- exit (FATAL_EXIT_CODE);
- if (sorrycount)
- exit (FATAL_EXIT_CODE);
- exit (SUCCESS_EXIT_CODE);
- return 34;
- }
-
- /* Decode -m switches. */
-
- /* Here is a table, controlled by the tm.h file, listing each -m switch
- and which bits in `target_switches' it should set or clear.
- If VALUE is positive, it is bits to set.
- If VALUE is negative, -VALUE is bits to clear.
- (The sign bit is not used so there is no confusion.) */
-
- struct {char *name; int value;} target_switches []
- = TARGET_SWITCHES;
-
- /* This table is similar, but allows the switch to have a value. */
-
- #ifdef TARGET_OPTIONS
- struct {char *prefix; char ** variable;} target_options []
- = TARGET_OPTIONS;
- #endif
-
- /* Decode the switch -mNAME. */
-
- void
- set_target_switch (name)
- char *name;
- {
- register int j;
- int valid = 0;
-
- for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++)
- if (!strcmp (target_switches[j].name, name))
- {
- if (target_switches[j].value < 0)
- target_flags &= ~-target_switches[j].value;
- else
- target_flags |= target_switches[j].value;
- valid = 1;
- }
-
- #ifdef TARGET_OPTIONS
- if (!valid)
- for (j = 0; j < sizeof target_options / sizeof target_options[0]; j++)
- {
- int len = strlen (target_options[j].prefix);
- if (!strncmp (target_options[j].prefix, name, len))
- {
- *target_options[j].variable = name + len;
- valid = 1;
- }
- }
- #endif
-
- if (!valid)
- error ("Invalid option `%s'", name);
- }
-
- /* Variable used for communication between the following two routines. */
-
- static int line_position;
-
- /* Print an option value and adjust the position in the line. */
-
- static void
- print_single_switch (type, name)
- char *type, *name;
- {
- fprintf (stderr, " %s%s", type, name);
-
- line_position += strlen (type) + strlen (name) + 1;
-
- if (line_position > 65)
- {
- fprintf (stderr, "\n\t");
- line_position = 8;
- }
- }
-
- /* Print default target switches for -version. */
-
- static void
- print_switch_values ()
- {
- register int j;
-
- fprintf (stderr, "enabled:");
- line_position = 8;
-
- for (j = 0; j < sizeof f_options / sizeof f_options[0]; j++)
- if (*f_options[j].variable == f_options[j].on_value)
- print_single_switch ("-f", f_options[j].string);
-
- for (j = 0; j < sizeof W_options / sizeof W_options[0]; j++)
- if (*W_options[j].variable == W_options[j].on_value)
- print_single_switch ("-W", W_options[j].string);
-
- for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++)
- if (target_switches[j].name[0] != '\0'
- && target_switches[j].value > 0
- && ((target_switches[j].value & target_flags)
- == target_switches[j].value))
- print_single_switch ("-m", target_switches[j].name);
-
- fprintf (stderr, "\n");
- }
-