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- /* Top level of GNU C compiler
- Copyright (C) 1987, 1988 Free Software Foundation, Inc.
-
- This file is part of GNU CC.
-
- GNU CC is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY. No author or distributor
- accepts responsibility to anyone for the consequences of using it
- or for whether it serves any particular purpose or works at all,
- unless he says so in writing. Refer to the GNU CC General Public
- License for full details.
-
- Everyone is granted permission to copy, modify and redistribute
- GNU CC, but only under the conditions described in the
- GNU CC General Public License. A copy of this license is
- supposed to have been given to you along with GNU CC so you
- can know your rights and responsibilities. It should be in a
- file named COPYING. Among other things, the copyright notice
- and this notice must be preserved on all copies. */
-
-
- /* This is the top level of cc1.
- 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"
- #include <stdio.h>
-
- #ifdef atarist
- #include <signal.h>
- #include <types.h>
- #include <stat.h>
-
- extern long _stksize = 500000; /* enough to compile -O gas */
-
- #else
-
- #include <signal.h>
-
- #include <sys/types.h>
- #include <sys/stat.h>
-
- #ifdef USG
- #include <sys/param.h>
- #include <sys/times.h>
- #include <time.h> /* Correct for hpux at least. Is it good on other USG? */
- #else
- #ifndef VMS
- #include <sys/time.h>
- #include <sys/resource.h>
- #endif
- #endif
-
- #endif /* atarist */
-
- #include "tree.h"
- #include "c-tree.h"
- #include "rtl.h"
- #include "flags.h"
-
- extern int yydebug;
-
- extern FILE *finput;
-
- extern void init_lex ();
- extern void init_decl_processing ();
- extern void init_tree ();
- extern void init_rtl ();
- extern void init_optabs ();
- extern void init_reg_sets ();
- extern void dump_flow_info ();
- extern void dump_local_alloc ();
-
- void rest_of_decl_compilation ();
- void error ();
- void error_with_file_and_line ();
- void set_target_switch ();
-
- /* 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. */
-
- int target_flags;
-
- /* 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 first #-command in the actual input. */
-
- char *main_input_filename;
-
- /* Current line number in real source file. */
-
- extern int lineno;
-
- /* 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;
-
- /* 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 flow_dump = 0;
- int combine_dump = 0;
- int local_reg_dump = 0;
- int global_reg_dump = 0;
- int jump2_opt_dump = 0;
-
- /* 1 => write gdb debugging output (using symout.c). -g
- 2 => write dbx debugging output (using dbxout.c). -G */
-
- enum debugger write_symbols = NO_DEBUG;
-
- /* Nonzero means do optimizations. -opt. */
-
- int optimize = 0;
-
- /* 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 = 1;
-
- /* Nonzero for -ffloat-store: don't allocate floats and doubles
- in extended-precision registers. */
-
- int flag_float_store = 0;
-
- /* Nonzero for -fcombine-regs:
- allow instruction combiner to combine an insn
- that just copies one reg to another. */
-
- int flag_combine_regs = 0;
-
- /* 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 means `char' should be signed. */
-
- int flag_signed_char;
-
- /* Nonzero means allow type mismatches in conditional expressions;
- just make their values `void'. */
-
- int flag_cond_mismatch;
-
- /* Nonzero means don't recognize the keyword `asm'. */
-
- int flag_no_asm;
-
- /* Nonzero means warn about implicit declarations. */
-
- int warn_implicit;
-
- /* 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 do some things the same way PCC does. */
-
- int flag_traditional;
-
- /* Nonzero means all references through pointers are volatile. */
-
- int flag_volatile;
-
- /* Nonzero means do stupid register allocation. -noreg.
- This and `optimize' are controlled by different switches in cc1,
- but normally cc controls them both with the -O switch. */
-
- 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;
-
- /* Don't print warning messages. -w. */
-
- int inhibit_warnings = 0;
-
- /* Do print extra warnings (such as for uninitialized variables). -W. */
-
- int extra_warnings = 0;
-
- /* Number of error messages and warning messages so far. */
-
- int errorcount = 0;
- int warningcount = 0;
-
- /* Nonzero if generating code to do profiling. */
-
- int profile_flag = 0;
-
- /* Nonzero for -pedantic switch: warn about anything
- that standard C forbids. */
-
- int pedantic = 0;
-
- /* Nonzero means `$' can be in an identifier.
- See cccp.c for reasons why this breaks some obscure ANSI C programs. */
-
- #ifndef DOLLARS_IN_IDENTIFIERS
- #define DOLLARS_IN_IDENTIFIERS 0
- #endif
- int dollars_in_ident = DOLLARS_IN_IDENTIFIERS;
-
- /* 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 defintion around for debugging
- purposes. */
-
- int flag_keep_inline_functions;
-
- /* Name for output file of assembly code, specified with -o. */
-
- char *asm_file_name;
-
- /* Name for output file of GDB symbol segment, specified with -symout. */
-
- char *sym_file_name;
-
- /* Output files for assembler code (real compiler output)
- and debugging dumps. */
-
- FILE *asm_out_file;
- FILE *rtl_dump_file;
- FILE *jump_opt_dump_file;
- FILE *cse_dump_file;
- FILE *loop_dump_file;
- FILE *flow_dump_file;
- FILE *combine_dump_file;
- FILE *local_reg_dump_file;
- FILE *global_reg_dump_file;
- FILE *jump2_opt_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 flow_time;
- int combine_time;
- int local_alloc_time;
- int global_alloc_time;
- int final_time;
- int symout_time;
- int dump_time;
-
- /* Return time used so far, in microseconds. */
-
- int
- gettime ()
- {
- #ifdef atarist
- long now;
- #else
- #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
- #endif /* atarist */
-
- if (quiet_flag)
- return 0;
-
- #ifdef atarist
- return(time(NULL) * 1000000);
- #else
- #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
- #endif /* atarist */
- }
-
- #define TIMEVAR(VAR, BODY) \
- do { int otime = gettime (); BODY; VAR += gettime () - 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)
- warningcount++;
- else
- 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, "cc1: ");
- perror (name);
- exit (35);
- }
-
- void
- fatal_io_error (name)
- char *name;
- {
- fprintf (stderr, "cc1:%s: I/O error\n", name);
- exit (35);
- }
-
- void
- fatal (s)
- char *s;
- {
- error (s, 0);
- exit (34);
- }
-
- /* 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)
- {
- fprintf (stderr, " %s", IDENTIFIER_POINTER (DECL_NAME (decl)));
- fflush (stderr);
- }
- }
-
- /* 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()
- {
- static tree last_error_function = NULL;
-
- if (last_error_function != current_function_decl)
- {
- if (current_function_decl == NULL)
- {
- if (!quiet_flag)
- fprintf (stderr, "\n");
- fprintf (stderr, "At top level:\n");
- }
- else
- {
- if (!quiet_flag)
- /* We already know this info. Don't print it twice.
- But make sure we are at the beginning of a line. */
- fprintf (stderr, "\n");
- else
- fprintf (stderr, "In function %s:\n",
- IDENTIFIER_POINTER (DECL_NAME (current_function_decl)));
- }
- last_error_function = current_function_decl;
- }
- }
-
- /* Report an error at the current line number.
- S and V are a string and an arg for `printf'. */
-
- void
- error (s, v)
- char *s;
- int v; /* @@also used as pointer */
- {
- error_with_file_and_line (input_filename, lineno, s, v);
- }
-
- /* Report an error at line LINE of file FILE.
- S and V are a string and an arg for `printf'. */
-
- void
- error_with_file_and_line (file, line, s, v)
- char *file;
- int line;
- char *s;
- int v;
- {
- count_error (0);
-
- report_error_function ();
-
- if (file)
- fprintf (stderr, "%s:%d: ", file, line);
- else
- fprintf (stderr, "cc1: ");
- fprintf (stderr, s, v);
- fprintf (stderr, "\n");
- }
-
- /* Report an error at the declaration DECL.
- S is string which uses %s to substitute the declaration name. */
-
- void
- error_with_decl (decl, s)
- tree decl;
- char *s;
- {
- count_error (0);
-
- report_error_function ();
-
- fprintf (stderr, "%s:%d: ",
- DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl));
-
- if (DECL_NAME (decl))
- fprintf (stderr, s, IDENTIFIER_POINTER (DECL_NAME (decl)));
- else
- fprintf (stderr, s, "((anonymous))");
- fprintf (stderr, "\n");
- }
-
- /* Report a warning at line LINE.
- S and V are a string and an arg for `printf'. */
-
- void
- warning_with_line (line, s, v)
- int line;
- char *s;
- int v;
- {
- if (count_error (1) == 0)
- return;
-
- report_error_function ();
-
- if (input_filename)
- fprintf (stderr, "%s:%d: ", input_filename, line);
- else
- fprintf (stderr, "cc1: ");
-
- fprintf (stderr, "warning: ");
- fprintf (stderr, s, v);
- fprintf (stderr, "\n");
- }
-
- /* Report a warning at the current line number.
- S and V are a string and an arg for `printf'. */
-
- void
- warning (s, v)
- char *s;
- int v; /* @@also used as pointer */
- {
- warning_with_line (lineno, s, v);
- }
-
- /* Report a warning at the declaration DECL.
- S is string which uses %s to substitute the declaration name. */
-
- void
- warning_with_decl (decl, s)
- tree decl;
- char *s;
- {
- if (count_error (1) == 0)
- return;
-
- report_error_function ();
-
- fprintf (stderr, "%s:%d: ",
- DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl));
-
- fprintf (stderr, "warning: ");
- if (DECL_NAME (decl))
- fprintf (stderr, s, IDENTIFIER_POINTER (DECL_NAME (decl)));
- else
- fprintf (stderr, s, "((anonymous))");
- fprintf (stderr, "\n");
- }
-
- /* 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. */
-
- int
- xmalloc (size)
- unsigned size;
- {
- register int value = (int) malloc (size);
- if (value == 0)
- fatal ("Virtual memory exhausted.");
- return value;
- }
-
- /* Same as `realloc' but report error if no memory available. */
-
- int
- xrealloc (ptr, size)
- char *ptr;
- int size;
- {
- int result = 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. */
-
- int
- exact_log2 (x)
- register unsigned int x;
- {
- register int log = 0;
- for (log = 0; log < HOST_BITS_PER_INT; log++)
- if (x == (1 << log))
- return log;
- return -1;
- }
-
- /* Given X, an unsigned number, return the largest int Y such that 2**Y <= X.
- If X is 0, return -1. */
-
- int
- floor_log2 (x)
- register unsigned int x;
- {
- register int log = 0;
- for (log = 0; log < HOST_BITS_PER_INT; log++)
- if ((x & ((-1) << log)) == 0)
- return log - 1;
- return HOST_BITS_PER_INT - 1;
- }
-
- /* 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 dump_base_name_length = strlen (dump_base_name);
-
- parse_time = 0;
- varconst_time = 0;
- integration_time = 0;
- jump_time = 0;
- cse_time = 0;
- loop_time = 0;
- flow_time = 0;
- combine_time = 0;
- local_alloc_time = 0;
- global_alloc_time = 0;
- final_time = 0;
- symout_time = 0;
- dump_time = 0;
-
- /* Open input file. */
-
- finput = fopen (name, "r");
- if (finput == 0)
- pfatal_with_name (name);
-
- /* Initialize data in various passes. */
-
- init_tree ();
- init_lex ();
- init_rtl ();
- init_emit_once ();
- init_decl_processing ();
- init_optabs ();
-
- /* If rtl dump desired, open the output file. */
- if (rtl_dump)
- {
- register char *dumpname = (char *) xmalloc (dump_base_name_length + 6);
- strcpy (dumpname, dump_base_name);
- strcat (dumpname, ".rtl");
- rtl_dump_file = fopen (dumpname, "w");
- if (rtl_dump_file == 0)
- pfatal_with_name (dumpname);
- }
-
- /* If jump_opt dump desired, open the output file. */
- if (jump_opt_dump)
- {
- register char *dumpname = (char *) xmalloc (dump_base_name_length + 6);
- strcpy (dumpname, dump_base_name);
- strcat (dumpname, ".jump");
- jump_opt_dump_file = fopen (dumpname, "w");
- if (jump_opt_dump_file == 0)
- pfatal_with_name (dumpname);
- }
-
- /* If cse dump desired, open the output file. */
- if (cse_dump)
- {
- register char *dumpname = (char *) xmalloc (dump_base_name_length + 6);
- strcpy (dumpname, dump_base_name);
- strcat (dumpname, ".cse");
- cse_dump_file = fopen (dumpname, "w");
- if (cse_dump_file == 0)
- pfatal_with_name (dumpname);
- }
-
- /* If loop dump desired, open the output file. */
- if (loop_dump)
- {
- register char *dumpname = (char *) xmalloc (dump_base_name_length + 6);
- strcpy (dumpname, dump_base_name);
- strcat (dumpname, ".loop");
- loop_dump_file = fopen (dumpname, "w");
- if (loop_dump_file == 0)
- pfatal_with_name (dumpname);
- }
-
- /* If flow dump desired, open the output file. */
- if (flow_dump)
- {
- register char *dumpname = (char *) xmalloc (dump_base_name_length + 6);
- strcpy (dumpname, dump_base_name);
- strcat (dumpname, ".flow");
- flow_dump_file = fopen (dumpname, "w");
- if (flow_dump_file == 0)
- pfatal_with_name (dumpname);
- }
-
- /* If combine dump desired, open the output file. */
- if (combine_dump)
- {
- register char *dumpname = (char *) xmalloc (dump_base_name_length + 10);
- strcpy (dumpname, dump_base_name);
- strcat (dumpname, ".combine");
- combine_dump_file = fopen (dumpname, "w");
- if (combine_dump_file == 0)
- pfatal_with_name (dumpname);
- }
-
- /* If local_reg dump desired, open the output file. */
- if (local_reg_dump)
- {
- register char *dumpname = (char *) xmalloc (dump_base_name_length + 6);
- strcpy (dumpname, dump_base_name);
- strcat (dumpname, ".lreg");
- local_reg_dump_file = fopen (dumpname, "w");
- if (local_reg_dump_file == 0)
- pfatal_with_name (dumpname);
- }
-
- /* If global_reg dump desired, open the output file. */
- if (global_reg_dump)
- {
- register char *dumpname = (char *) xmalloc (dump_base_name_length + 6);
- strcpy (dumpname, dump_base_name);
- strcat (dumpname, ".greg");
- global_reg_dump_file = fopen (dumpname, "w");
- if (global_reg_dump_file == 0)
- pfatal_with_name (dumpname);
- }
-
- /* If jump2_opt dump desired, open the output file. */
- if (jump2_opt_dump)
- {
- register char *dumpname = (char *) xmalloc (dump_base_name_length + 7);
- strcpy (dumpname, dump_base_name);
- strcat (dumpname, ".jump2");
- jump2_opt_dump_file = fopen (dumpname, "w");
- if (jump2_opt_dump_file == 0)
- pfatal_with_name (dumpname);
- }
-
- /* Open assembler code output file. */
-
- {
- register char *dumpname = (char *) xmalloc (dump_base_name_length + 6);
- int len = strlen (dump_base_name);
- strcpy (dumpname, dump_base_name);
- if (len > 2 && ! strcmp (".c", dumpname + len - 2))
- dumpname[len - 2] = 0;
- else if (len > 3 && ! strcmp (".co", dumpname + len - 3))
- dumpname[len - 3] = 0;
- strcat (dumpname, ".s");
- if (asm_file_name == 0)
- {
- asm_file_name = (char *) malloc (strlen (dumpname) + 1);
- strcpy (asm_file_name, dumpname);
- }
- asm_out_file = fopen (asm_file_name, "w");
- if (asm_out_file == 0)
- pfatal_with_name (asm_file_name ? asm_file_name : dumpname);
- }
-
- input_filename = name;
-
- /* the beginning of the file is a new line; check for # */
- /* With luck, we discover the real source file's name from that
- and put it in input_filename. */
- ungetc (check_newline (), finput);
-
- ASM_FILE_START (asm_out_file);
-
- /* If GDB symbol table desired, open the GDB symbol output file. */
- if (write_symbols == GDB_DEBUG)
- {
- register char *dumpname = (char *) xmalloc (dump_base_name_length + 6);
- int len = strlen (dump_base_name);
- strcpy (dumpname, dump_base_name);
- if (len > 2 && ! strcmp (".c", dumpname + len - 2))
- dumpname[len - 2] = 0;
- else if (len > 3 && ! strcmp (".co", dumpname + len - 3))
- dumpname[len - 3] = 0;
- strcat (dumpname, ".sym");
- if (sym_file_name == 0)
- sym_file_name = dumpname;
- symout_init (sym_file_name, asm_out_file, main_input_filename);
- }
-
- /* If dbx symbol table desired, initialize writing it
- and output the predefined types. */
- #ifdef DBX_DEBUGGING_INFO
- if (write_symbols == DBX_DEBUG)
- dbxout_init (asm_out_file, main_input_filename);
- #endif
- #ifdef SDB_DEBUGGING_INFO
- if (write_symbols == SDB_DEBUG)
- sdbout_init (asm_out_file, main_input_filename);
- #endif
-
- /* Initialize yet another pass. */
-
- init_final (main_input_filename);
-
- start_time = gettime ();
-
- /* Call the parser, which parses the entire file
- (calling rest_of_compilation for each function). */
-
- yyparse ();
-
- /* Compilation is now finished except for writing
- what's left of the symbol table output. */
-
- parse_time += gettime () - start_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. */
-
- {
- tree decl;
- for (decl = globals; decl; decl = TREE_CHAIN (decl))
- {
- if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)
- && ! TREE_ASM_WRITTEN (decl))
- rest_of_decl_compilation (decl, 0, 1, 1);
- if (TREE_CODE (decl) == FUNCTION_DECL
- && ! TREE_ASM_WRITTEN (decl)
- && DECL_INITIAL (decl) != 0
- && TREE_ADDRESSABLE (decl))
- output_inline_function (decl);
- }
- }
-
- /* Do dbx symbols */
- #ifdef DBX_DEBUGGING_INFO
- if (write_symbols == DBX_DEBUG)
- TIMEVAR (symout_time,
- {
- dbxout_tags (gettags ());
- dbxout_types (get_permanent_types ());
- });
- #endif
-
- #ifdef SDB_DEBUGGING_INFO
- if (write_symbols == SDB_DEBUG)
- TIMEVAR (symout_time,
- {
- sdbout_tags (gettags ());
- sdbout_types (get_permanent_types ());
- });
- #endif
-
- /* Do gdb symbols */
- if (write_symbols == GDB_DEBUG)
- TIMEVAR (symout_time,
- {
- struct stat statbuf;
- #ifdef atarist
- stat (name, &statbuf);
- #else
- fstat (fileno (finput), &statbuf);
- #endif
- symout_types (get_permanent_types ());
- symout_top_blocks (globals, gettags ());
- symout_finish (name, statbuf.st_ctime);
- });
-
- /* Close the dump files. */
-
- 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 (flow_dump)
- fclose (flow_dump_file);
-
- if (combine_dump)
- {
- dump_combine_total_stats (combine_dump_file);
- fclose (combine_dump_file);
- }
-
- if (local_reg_dump)
- fclose (local_reg_dump_file);
-
- if (global_reg_dump)
- fclose (global_reg_dump_file);
-
- if (jump2_opt_dump)
- fclose (jump2_opt_dump_file);
-
- /* Close non-debugging input and output files. */
-
- fclose (finput);
- if (ferror (asm_out_file) != 0)
- fatal_io_error (asm_file_name);
- fclose (asm_out_file);
-
- /* Print the times. */
-
- if (! quiet_flag)
- {
- fprintf (stderr,"\n");
- print_time ("parse", parse_time);
- print_time ("integration", integration_time);
- print_time ("jump", jump_time);
- print_time ("cse", cse_time);
- print_time ("loop", loop_time);
- print_time ("flow", flow_time);
- print_time ("combine", combine_time);
- print_time ("local-alloc", local_alloc_time);
- print_time ("global-alloc", global_alloc_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 finish_decl (within yyparse)
- for each declaration of a function or variable.
- This does nothing for automatic 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;
- tree asmspec;
- int top_level;
- int at_end;
- {
- /* Declarations of variables, and of functions defined elsewhere. */
-
- if (TREE_STATIC (decl) || TREE_EXTERNAL (decl))
- TIMEVAR (varconst_time,
- {
- assemble_variable (decl, asmspec, top_level, write_symbols, at_end);
- });
- #ifdef DBX_DEBUGGING_INFO
- else if (write_symbols == DBX_DEBUG && TREE_CODE (decl) == TYPE_DECL)
- TIMEVAR (varconst_time, dbxout_symbol (decl, 0));
- #endif
- #ifdef SDB_DEBUGGING_INFO
- else if (write_symbols == SDB_DEBUG && TREE_CODE (decl) == TYPE_DECL)
- TIMEVAR (varconst_time, sdbout_symbol (decl, 0));
- #endif
-
- if (top_level)
- {
- if (write_symbols == GDB_DEBUG)
- {
- TIMEVAR (symout_time,
- {
- /* The initizations make types when they contain
- string constants. The types are on the temporary
- obstack, so output them now before they go away. */
- symout_types (get_temporary_types ());
- });
- }
- else
- /* Clean out the temporary type list, since the types will go away. */
- get_temporary_types ();
- }
- }
-
- /* 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 = gettime ();
- int tem;
-
- /* 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)
- {
-
- /* If requested, consider whether to make this function inline. */
- if (flag_inline_functions || TREE_INLINE (decl))
- {
- TIMEVAR (integration_time,
- {
- int specd = TREE_INLINE (decl);
- char *lose = function_cannot_inline_p (decl);
- if (lose != 0 && specd)
- warning_with_decl (decl, lose);
- if (lose == 0)
- save_for_inline (decl);
- else
- TREE_INLINE (decl) = 0;
- });
- }
-
- 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. */
-
- if (TREE_PUBLIC (decl) == 0
- && TREE_INLINE (decl)
- && ! flag_keep_inline_functions)
- goto exit_rest_of_compilation;
- }
-
- if (rtl_dump_and_exit)
- goto exit_rest_of_compilation;
-
- TREE_ASM_WRITTEN (decl) = 1;
-
- insns = get_insns ();
-
- /* Copy any shared structure that should not be shared. */
-
- unshare_all_rtl (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 || extra_warnings || warn_return_type)
- TIMEVAR (jump_time, jump_optimize (insns, 0, 0));
-
- /* 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 (optimize)
- {
- TIMEVAR (cse_time, reg_scan (insns, max_reg_num (), 0));
-
- TIMEVAR (cse_time, tem = cse_main (insns, max_reg_num ()));
-
- if (tem)
- TIMEVAR (jump_time, jump_optimize (insns, 0, 0));
- }
-
- /* Dump rtl code after cse, if we are doing that. */
-
- if (cse_dump)
- TIMEVAR (dump_time,
- {
- fprintf (cse_dump_file, "\n;; Function %s\n\n",
- IDENTIFIER_POINTER (DECL_NAME (decl)));
- 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)
- {
- TIMEVAR (loop_time,
- {
- reg_scan (insns, max_reg_num (), 1);
- loop_optimize (insns, max_reg_num (),
- loop_dump ? loop_dump_file : 0);
- });
- }
-
- /* 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);
- });
-
- /* Now we choose between stupid (pcc-like) register allocation
- (if we got the -noreg switch and not -opt)
- and smart register allocation. */
-
- if (optimize) /* 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 (extra_warnings)
- uninitialized_vars_warning (DECL_INITIAL (decl));
- }
-
- /* 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)
- 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);
- });
-
- /* 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)
- global_alloc (global_reg_dump ? global_reg_dump_file : 0);
- else
- reload (insns, 0,
- global_reg_dump ? global_reg_dump_file : 0);
- });
-
- 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);
- });
-
- /* 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)
- {
- TIMEVAR (jump_time, jump_optimize (insns, 1, 1));
- }
-
- /* 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);
- });
-
- /* Now turn the rtl into assembler code. */
-
- TIMEVAR (final_time,
- {
- assemble_function (decl);
- final_start_function (insns, asm_out_file,
- write_symbols, optimize);
- final (insns, asm_out_file,
- write_symbols, optimize);
- final_end_function (insns, asm_out_file,
- write_symbols, optimize);
- fflush (asm_out_file);
- });
-
- /* Write GDB symbols if requested */
-
- if (write_symbols == GDB_DEBUG)
- {
- TIMEVAR (symout_time,
- {
- symout_types (get_permanent_types ());
- symout_types (get_temporary_types ());
-
- DECL_BLOCK_SYMTAB_ADDRESS (decl)
- = symout_function (DECL_INITIAL (decl),
- DECL_ARGUMENTS (decl), 0);
- });
- }
- else
- get_temporary_types ();
-
- /* Write DBX symbols if requested */
-
- #ifdef DBX_DEBUGGING_INFO
- if (write_symbols == DBX_DEBUG)
- TIMEVAR (symout_time, dbxout_function (decl));
- #endif
-
- exit_rest_of_compilation:
-
- /* The parsing time is all the time spent in yyparse
- *except* what is spent in this function. */
-
- parse_time -= gettime () - start_time;
- }
-
- /* Entry point of cc1. 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 print_mem_flag = 0;
-
- #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 */
-
- /* Initialize whether `char' is signed. */
- flag_signed_char = DEFAULT_SIGNED_CHAR;
-
- /* This is zeroed by -O. */
- obey_regdecls = 1;
-
- /* Initialize register usage now so switches may override. */
- init_reg_sets ();
-
- target_flags = 0;
- set_target_switch ("");
-
- for (i = 1; i < argc; i++)
- if (argv[i][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];
- #ifdef atarist
- /* dump_base_name will typically be 'foo.c' here. Need to truncate at the '.',
- cause dots mean something here */
- {
- char * n = dump_base_name;
- for ( ; ((*n) && (*n != '.')) ; )
- n++;
- *n = '\0';
- }
- #endif
- }
- else if (str[0] == 'd')
- {
- register char *p = &str[1];
- while (*p)
- switch (*p++)
- {
- case 'c':
- combine_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':
- print_mem_flag = 1;
- break;
- case 'r':
- rtl_dump = 1;
- break;
- case 's':
- cse_dump = 1;
- break;
- case 'y':
- yydebug = 1;
- break;
- }
- }
- else if (str[0] == 'f')
- {
- register char *p = &str[1];
- if (!strcmp (p, "float-store"))
- flag_float_store = 1;
- else if (!strcmp (p, "traditional"))
- flag_traditional = 1, dollars_in_ident = 1;
- else if (!strcmp (p, "volatile"))
- flag_volatile = 1;
- else if (!strcmp (p, "defer-pop"))
- flag_defer_pop = 1;
- else if (!strcmp (p, "no-defer-pop"))
- flag_defer_pop = 0;
- else if (!strcmp (p, "omit-frame-pointer"))
- flag_omit_frame_pointer = 1;
- else if (!strcmp (p, "no-omit-frame-pointer"))
- flag_omit_frame_pointer = 0;
- else if (!strcmp (p, "no-peephole"))
- flag_no_peephole = 1;
- else if (!strcmp (p, "signed-char"))
- flag_signed_char = 1;
- else if (!strcmp (p, "unsigned-char"))
- flag_signed_char = 0;
- else if (!strcmp (p, "force-mem"))
- flag_force_mem = 1;
- else if (!strcmp (p, "force-addr"))
- flag_force_addr = 1;
- else if (!strcmp (p, "combine-regs"))
- flag_combine_regs = 1;
- else if (!strcmp (p, "writable-strings"))
- flag_writable_strings = 1;
- else if (!strcmp (p, "no-function-cse"))
- flag_no_function_cse = 1;
- else if (!strcmp (p, "cond-mismatch"))
- flag_cond_mismatch = 1;
- else if (!strcmp (p, "no-asm"))
- flag_no_asm = 1;
- 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 if (!strcmp (p, "inline-functions"))
- flag_inline_functions = 1;
- else if (!strcmp (p, "keep-inline-functions"))
- flag_keep_inline_functions = 1;
- else
- error ("Invalid option, `%s'", argv[i]);
- }
- else if (!strcmp (str, "noreg"))
- ;
- else if (!strcmp (str, "opt"))
- optimize = 1, obey_regdecls = 0;
- else if (!strcmp (str, "O"))
- optimize = 1, obey_regdecls = 0;
- else if (!strcmp (str, "pedantic"))
- pedantic = 1;
- else if (!strcmp (str, "traditional"))
- flag_traditional = 1, dollars_in_ident = 1;
- else if (!strcmp (str, "ansi"))
- flag_no_asm = 1, dollars_in_ident = 0;
- else if (!strcmp (str, "quiet"))
- quiet_flag = 1;
- else if (!strcmp (str, "version"))
- {
- extern char *version_string;
- printf ("GNU C version %s", version_string);
- #ifdef TARGET_VERSION
- TARGET_VERSION;
- #endif
- #ifdef __GNUC__
- #ifndef __VERSION__
- #define __VERSION__ "[unknown]"
- #endif
- printf (" compiled by GNU C version %s.\n", __VERSION__);
- #else
- printf (" compiled by CC.\n");
- #endif
- }
- else if (!strcmp (str, "w"))
- inhibit_warnings = 1;
- else if (!strcmp (str, "W"))
- extra_warnings = 1;
- else if (!strcmp (str, "Wimplicit"))
- warn_implicit = 1;
- else if (!strcmp (str, "Wreturn-type"))
- warn_return_type = 1;
- else if (!strcmp (str, "Wcomment"))
- ; /* cpp handles this one. */
- else if (!strcmp (str, "Wtrigraphs"))
- ; /* cpp handles this one. */
- else if (!strcmp (str, "Wall"))
- {
- extra_warnings = 1;
- warn_implicit = 1;
- warn_return_type = 1;
- }
- else if (!strcmp (str, "p"))
- profile_flag = 1;
- else if (!strcmp (str, "gg"))
- write_symbols = GDB_DEBUG;
- #ifdef DBX_DEBUGGING_INFO
- else if (!strcmp (str, "g"))
- write_symbols = DBX_DEBUG;
- else if (!strcmp (str, "G"))
- write_symbols = DBX_DEBUG;
- #endif
- #ifdef SDB_DEBUGGING_INFO
- else if (!strcmp (str, "g"))
- write_symbols = SDB_DEBUG;
- else if (!strcmp (str, "G"))
- write_symbols = SDB_DEBUG;
- #endif
- else if (!strcmp (str, "symout"))
- {
- if (write_symbols == NO_DEBUG)
- write_symbols = GDB_DEBUG;
- sym_file_name = argv[++i];
- }
- else if (!strcmp (str, "o"))
- {
- asm_file_name = argv[++i];
- }
- else
- error ("Invalid switch, %s.", argv[i]);
- }
- else
- filename = argv[i];
-
- if (filename == 0)
- fatal ("no input file specified");
-
- if (dump_base_name == 0)
- dump_base_name = filename;
-
- #ifdef OVERRIDE_OPTIONS
- /* Some machines may reject certain combinations of options. */
- OVERRIDE_OPTIONS;
- #endif
-
- /* Now that register usage is specified, convert it to HARD_REG_SETs. */
- init_reg_sets_1 ();
-
- compile_file (filename);
-
- #ifndef atarist
- #ifndef USG
- #ifndef VMS
- if (print_mem_flag)
- {
- extern char **environ;
- caddr_t lim = (caddr_t) sbrk (0);
-
- fprintf (stderr, "Data size %d.\n",
- (int) lim - (int) &environ);
- fflush (stderr);
-
- system ("ps v");
- }
- #endif /* not VMS */
- #endif /* not USG */
- #endif /* not atarist */
-
- if (errorcount)
- 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;
-
- /* Decode the switch -mNAME. */
-
- void
- set_target_switch (name)
- char *name;
- {
- register int j;
- 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;
- break;
- }
- }
-