Added gccHEADmaster

1 files changed, 2072 insertions, 0 deletions

diff --git a/gcc-1.40/toplev.c b/gcc-1.40/toplev.c
new file mode 100644
index 0000000..da23df7
--- /dev/null
+++ b/gcc-1.40/toplev.c
@@ -0,0 +1,2072 @@
+/* Top level of GNU C compiler
+   Copyright (C) 1987, 1988, 1989 Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+GNU CC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 1, or (at your option)
+any later version.
+
+GNU CC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+
+/* 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 <sys/types.h>
+#include <stdio.h>
+#include <signal.h>
+#include <setjmp.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"
+
+extern int yydebug;
+
+extern FILE *finput;
+
+extern int reload_completed;
+extern int rtx_equal_function_value_matters;
+
+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 fancy_abort ();
+void set_target_switch ();
+void print_target_switch_defaults ();
+
+/* 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 #-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;
+
+/* 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;
+
+/* 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;
+int dbr_sched_dump = 0;
+
+/* 1 => write gdb debugging output (using symout.c).  -g
+   2 => write dbx debugging output (using dbxout.c).  -G
+   3 => write sdb debugging output (using sdbout.c).  -g.  */
+
+enum debugger write_symbols = NO_DEBUG;
+
+/* Nonzero means can use our own extensions to DBX format.
+   Relevant only with write_symbols == DBX_DEBUG.  */
+
+int use_gdb_dbx_extensions;
+
+/* Nonzero means do optimizations.  -opt.  */
+
+int optimize = 0;
+
+/* 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 for -fpcc-struct-return: return values the same way PCC does.  */
+
+int flag_pcc_struct_return = 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 enables strength-reduction in loop.c.  */
+
+int flag_strength_reduce = 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 all references through pointers are volatile.  */
+
+int flag_volatile;
+
+/* Nonzero means just do syntax checking; don't output anything.  */
+
+int flag_syntax_only = 0;
+
+/* 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;
+
+/* Nonzero to warn about unused local variables.  */
+
+int warn_unused;
+
+/* 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 any identifiers that match in the first N
+   characters.  The value N is in `id_clash_len'.  */
+
+int warn_id_clash;
+int id_clash_len;
+
+/* Number of error messages and warning messages so far.  */
+
+int errorcount = 0;
+int warningcount = 0;
+int sorrycount = 0;
+
+/* Name of program invoked, sans directories.  */
+
+char *progname;
+
+/* 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;
+
+/* 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;
+
+/* 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;
+
+/* Copy of arguments to main.  */
+int save_argc;
+char **save_argv;
+
+/* 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;
+
+/* 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},
+  {"defer-pop", &flag_defer_pop, 1},
+  {"omit-frame-pointer", &flag_omit_frame_pointer, 1},
+  {"strength-reduce", &flag_strength_reduce, 1},
+  {"writable-strings", &flag_writable_strings, 1},
+  {"peephole", &flag_no_peephole, 0},
+  {"force-mem", &flag_force_mem, 1},
+  {"force-addr", &flag_force_addr, 1},
+  {"combine-regs", &flag_combine_regs, 1},
+  {"function-cse", &flag_no_function_cse, 0},
+  {"inline-functions", &flag_inline_functions, 1},
+  {"keep-inline-functions", &flag_keep_inline_functions, 1},
+  {"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},
+  {"delayed-branch", &flag_delayed_branch, 1}
+};
+
+/* 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;
+FILE *dbr_sched_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 dbr_sched_time;
+int final_time;
+int symout_time;
+int dump_time;
+
+/* Return time used so far, in microseconds.  */
+
+int
+gettime ()
+{
+#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 = 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, "%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);
+}
+
+void
+fatal (s, v)
+     char *s;
+     int v;
+{
+  error (s, v);
+  exit (34);
+}
+
+/* Called from insn-extract to give a better error message when we
+   don't have an insn to match what we are looking for, rather
+   than just calling abort().  */
+
+void
+fatal_insn_not_found (insn)
+     rtx insn;
+{
+  error ("The following insn was not recognizable:", 0);
+  debug_rtx (insn);
+  abort ();
+}
+
+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)
+    {
+      fprintf (stderr, " %s", DECL_PRINT_NAME (decl));
+      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)
+    {
+      if (file)
+	fprintf (stderr, "%s: ", file);
+
+      if (current_function_decl == NULL)
+	fprintf (stderr, "At top level:\n");
+      else if (TREE_CODE (TREE_TYPE (current_function_decl)) == METHOD_TYPE)
+	fprintf (stderr, "In method %s:\n",
+		 DECL_PRINT_NAME (current_function_decl));
+      else
+	fprintf (stderr, "In function %s:\n",
+		 DECL_PRINT_NAME (current_function_decl));
+
+      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, ",");
+	}
+      fprintf (stderr, ":\n");
+      last_error_tick = input_file_stack_tick;
+    }
+}
+
+/* Report an error at the current line number.
+   S and V are a string and an arg for `printf'.  */
+
+void
+error (s, v, v2)
+     char *s;
+     int v;			/* @@also used as pointer */
+     int v2;			/* @@also used as pointer */
+{
+  error_with_file_and_line (input_filename, lineno, s, v, v2);
+}
+
+/* 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, v2)
+     char *file;
+     int line;
+     char *s;
+     int v;
+     int v2;
+{
+  count_error (0);
+
+  report_error_function (file);
+
+  if (file)
+    fprintf (stderr, "%s:%d: ", file, line);
+  else
+    fprintf (stderr, "%s: ", progname);
+  fprintf (stderr, s, v, v2);
+  fprintf (stderr, "\n");
+}
+
+/* Report an error at the declaration DECL.
+   S and V are a string and an arg which uses %s to substitute the declaration name.  */
+
+void
+error_with_decl (decl, s, v)
+     tree decl;
+     char *s;
+     int v;
+{
+  count_error (0);
+
+  report_error_function (DECL_SOURCE_FILE (decl));
+
+  fprintf (stderr, "%s:%d: ",
+	   DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl));
+
+  if (DECL_PRINT_NAME (decl))
+    fprintf (stderr, s, DECL_PRINT_NAME (decl), v);
+  else if (DECL_NAME (decl))
+    fprintf (stderr, s, IDENTIFIER_POINTER (DECL_NAME (decl)), v);
+  else
+    fprintf (stderr, s, "((anonymous))", v);
+  fprintf (stderr, "\n");
+}
+
+/* Report an error at the line number of the insn INSN.
+   S and V are a string and an arg for `printf'.
+   This is used only when INSN is an `asm' with operands,
+   and each ASM_OPERANDS records its own source file and line.  */
+
+void
+error_for_asm (insn, s, v, v2)
+     rtx insn;
+     char *s;
+     int v;			/* @@also used as pointer */
+     int v2;			/* @@also used as pointer */
+{
+  rtx temp;
+  char *filename;
+  int line;
+  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);
+
+  filename = ASM_OPERANDS_SOURCE_FILE (asmop);
+  line = ASM_OPERANDS_SOURCE_LINE (asmop);
+
+  error_with_file_and_line (filename, line, s, v, v2);
+}
+
+/* Report a warning at line LINE.
+   S and V are a string and an arg for `printf'.  */
+
+void
+warning_with_file_and_line (file, line, s, v, v2)
+     char *file;
+     int line;
+     char *s;
+     int v;
+     int v2;
+{
+  if (count_error (1) == 0)
+    return;
+
+  report_error_function (file);
+
+  if (file)
+    fprintf (stderr, "%s:%d: ", file, line);
+  else
+    fprintf (stderr, "%s: ", progname);
+
+  fprintf (stderr, "warning: ");
+  fprintf (stderr, s, v, v2);
+  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, v2)
+     char *s;
+     int v;			/* @@also used as pointer */
+     int v2;
+{
+  warning_with_file_and_line (input_filename, lineno, s, v, v2);
+}
+
+/* Report a warning at the declaration DECL.
+   S is string which uses %s to substitute the declaration name.
+   V is a second parameter that S can refer to.  */
+
+void
+warning_with_decl (decl, s, v)
+     tree decl;
+     char *s;
+     int v;
+{
+  if (count_error (1) == 0)
+    return;
+
+  report_error_function (DECL_SOURCE_FILE (decl));
+
+  fprintf (stderr, "%s:%d: ",
+	   DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl));
+
+  fprintf (stderr, "warning: ");
+  if (DECL_PRINT_NAME (decl))
+    fprintf (stderr, s, DECL_PRINT_NAME (decl), v);
+  else if (DECL_NAME (decl))
+    fprintf (stderr, s, IDENTIFIER_POINTER (DECL_NAME (decl)), v);
+  else
+    fprintf (stderr, s, "((anonymous))", v);
+  fprintf (stderr, "\n");
+}
+
+/* Apologize for not implementing some feature.
+   S, V, and V2 are a string and args for `printf'.  */
+
+void
+sorry (s, v, v2)
+     char *s;
+     int v, v2;
+{
+  sorrycount++;
+  if (input_filename)
+    fprintf (stderr, "%s:%d: ", input_filename, lineno);
+  else
+    fprintf (stderr, "%s: ", progname);
+
+  fprintf (stderr, "sorry, not implemented: ");
+  fprintf (stderr, s, v, v2);
+  fprintf (stderr, "\n");
+}
+
+/* Apologize for not implementing some feature, then quit.
+   S, V, and V2 are a string and args for `printf'.  */
+
+void
+really_sorry (s, v, v2)
+     char *s;
+     int v, v2;
+{
+  if (input_filename)
+    fprintf (stderr, "%s:%d: ", input_filename, lineno);
+  else
+    fprintf (stderr, "c++: ");
+
+  fprintf (stderr, "sorry, not implemented: ");
+  fprintf (stderr, s, v, v2);
+  fatal (" (fatal)\n");
+}
+
+/* More 'friendly' abort that prints the line and file.
+   config.h can #define abort fancy_abort if you like that sort of thing.  */
+
+void
+fancy_abort ()
+{
+  fatal ("Internal gcc 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.  */
+
+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;
+}
+
+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 (handler, float_handler, sizeof (float_handler));
+}
+
+/* Signals actually come here.  */
+
+static void
+float_signal ()
+{
+  if (float_handled == 0)
+    abort ();
+  float_handled = 0;
+  longjmp (float_handler, 1);
+}
+
+/* Handler for SIGPIPE.  */
+
+static void
+pipe_closed ()
+{
+  fatal ("output pipe has been closed");
+}
+
+/* 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;
+
+  int name_specified = name != 0;
+
+  if (dump_base_name == 0)
+    dump_base_name = name ? name : "gccdump";
+  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;
+  dbr_sched_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);
+
+  /* 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);
+    }
+
+  /* If dbr_sched dump desired, open the output file.  */
+  if (dbr_sched_dump)
+    {
+      register char *dumpname = (char *) xmalloc (dump_base_name_length + 7);
+      strcpy (dumpname, dump_base_name);
+      strcat (dumpname, ".dbr");
+      dbr_sched_dump_file = fopen (dumpname, "w");
+      if (dbr_sched_dump_file == 0)
+	pfatal_with_name (dumpname);
+    }
+
+  /* Open assembler code output file.  */
+
+  if (! name_specified && asm_file_name == 0)
+    asm_out_file = stdout;
+  else
+    {
+      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 > 2 && ! strcmp (".i", 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);
+	}
+      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);
+    }
+
+  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);
+
+  /* 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;
+
+  ASM_FILE_START (asm_out_file);
+
+  /* Output something to inform GDB that this compilation was by GCC.  */
+#ifndef ASM_IDENTIFY_GCC
+  fprintf (asm_out_file, "gcc_compiled.:\n");
+#else
+  ASM_IDENTIFY_GCC (asm_out_file);
+#endif
+
+  /* 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 > 2 && ! strcmp (".i", 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 -= 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.  */
+
+  {
+    tree decl;
+    for (decl = globals; decl; decl = TREE_CHAIN (decl))
+      {
+	if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl)
+	    && ! TREE_ASM_WRITTEN (decl))
+	  {
+	    /* Don't write out static consts, unless we used them.
+	       (This used to write them out only if the address was
+	       taken, but that was wrong; if the variable was simply
+	       referred to, it still needs to exist or else it will
+	       be undefined in the linker.)  */
+	    if (! TREE_READONLY (decl)
+		|| TREE_USED (decl)
+		|| TREE_PUBLIC (decl)
+		|| TREE_ADDRESSABLE (decl))
+	      rest_of_decl_compilation (decl, 0, 1, 1);
+	    /* Otherwise maybe mention them just for the debugger.  */
+#ifdef DBX_DEBUGGING_INFO
+	    else if (DECL_INITIAL (decl) && write_symbols == DBX_DEBUG)
+	      TIMEVAR (varconst_time, dbxout_symbol (decl, 0));
+#endif
+#ifdef SDB_DEBUGGING_INFO
+	    else if (DECL_INITIAL (decl) && write_symbols == SDB_DEBUG)
+	      TIMEVAR (varconst_time, sdbout_symbol (decl, 0));
+#endif
+	  }
+	if (TREE_CODE (decl) == FUNCTION_DECL
+	    && ! TREE_ASM_WRITTEN (decl)
+	    && DECL_INITIAL (decl) != 0
+	    && TREE_ADDRESSABLE (decl)
+	    && ! TREE_EXTERNAL (decl))
+	  output_inline_function (decl);
+
+	/* Warn about any function declared static but not defined.  */
+	if (warn_unused
+	    && TREE_CODE (decl) == FUNCTION_DECL
+	    && DECL_INITIAL (decl) == 0
+	    && TREE_EXTERNAL (decl)
+	    && ! TREE_PUBLIC (decl))
+	  warning_with_decl (decl, "`%s' declared but never defined");
+	/* Warn about statics fns or vars defined but not used,
+	   but not about inline functions
+	   since unused inline statics is normal practice.  */
+	if (warn_unused
+	    && (TREE_CODE (decl) == FUNCTION_DECL
+		|| TREE_CODE (decl) == VAR_DECL)
+	    && ! TREE_EXTERNAL (decl)
+	    && ! TREE_PUBLIC (decl)
+	    && ! TREE_USED (decl)
+	    && ! TREE_INLINE (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");
+      }
+  }
+
+  /* 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;
+	       fstat (fileno (finput), &statbuf);
+	       symout_types (get_permanent_types ());
+	       symout_top_blocks (globals, gettags ());
+	       symout_finish (name, statbuf.st_ctime);
+	     });
+
+  /* Output some stuff at end of file if nec.  */
+
+  end_final (main_input_filename);
+
+#ifdef ASM_FILE_END
+  ASM_FILE_END (asm_out_file);
+#endif
+
+  /* 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);
+
+  if (dbr_sched_dump)
+    fclose (dbr_sched_dump_file);
+
+  /* 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);
+      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 ("dbranch", dbr_sched_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;
+     char *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,
+	     {
+	       make_decl_rtl (decl, asmspec, top_level);
+	       /* 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, write_symbols, at_end);
+	     });
+  else if (TREE_REGDECL (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);
+    }
+#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 && top_level
+	   && 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) && ! TREE_ADDRESSABLE (decl)
+	    && ! flag_keep_inline_functions)
+	   || TREE_EXTERNAL (decl))
+	  && TREE_INLINE (decl))
+	goto exit_rest_of_compilation;
+    }
+
+  if (rtl_dump_and_exit || flag_syntax_only)
+    {
+      get_temporary_types ();
+      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
+      /* If function is `volatile', we should warn if it tries to return.  */
+      || TREE_THIS_VOLATILE (decl))
+    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, 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);
+	     });
+
+  rtx_equal_function_value_matters = 1;
+  reload_completed = 1;
+
+  /* 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);
+	     });
+
+  /* If a scheduling pass for delayed branches is to be done,
+     call the scheduling code. */
+
+#ifdef HAVE_DELAYED_BRANCH
+  if (optimize && 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
+
+  /* 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, 0);
+	     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);
+		 symout_function_end ();
+	       });
+    }
+  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:
+
+  rtx_equal_function_value_matters = 0;
+  reload_completed = 0;
+
+  /* Clear out the real_constant_chain before some of the rtx's
+     it runs through become garbage.  */
+
+  clear_const_double_mem ();
+
+  /* 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;
+  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);
+
+  signal (SIGPIPE, pipe_closed);
+
+  /* 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
+
+  /* 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] == '-' && 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 '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':
+		  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')
+	  {
+	    int j;
+	    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 if (! lang_decode_option (argv[i]))
+	      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 (lang_decode_option (argv[i]))
+	  ;
+	else if (!strcmp (str, "quiet"))
+	  quiet_flag = 1;
+	else if (!strcmp (str, "version"))
+	  {
+	    extern char *version_string, *language_string;
+	    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
+	    print_target_switch_defaults ();
+	  }
+	else if (!strcmp (str, "w"))
+	  inhibit_warnings = 1;
+	else if (!strcmp (str, "W"))
+	  extra_warnings = 1;
+	else if (!strcmp (str, "Wunused"))
+	  warn_unused = 1;
+	else if (!strcmp (str, "Wshadow"))
+	  warn_shadow = 1;
+	else if (!strcmp (str, "Wswitch"))
+	  warn_switch = 1;
+	else if (!strncmp (str, "Wid-clash-", 10))
+	  {
+	    char *endp = str + 10;
+
+	    while (*endp)
+	      {
+		if (*endp >= '0' && *endp <= '9')
+		  endp++;
+		else
+		  error ("Invalid option `%s'", argv[i]);
+	      }
+	    warn_id_clash = 1;
+	    id_clash_len = atoi (str + 10);
+	  }
+	else if (!strcmp (str, "p"))
+	  profile_flag = 1;
+	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 (!strcmp (str, "gg"))
+	  write_symbols = GDB_DEBUG;
+#ifdef DBX_DEBUGGING_INFO
+	else if (!strcmp (str, "g0"))
+	  write_symbols = DBX_DEBUG;
+	else if (!strcmp (str, "G0"))
+	  write_symbols = DBX_DEBUG;
+	else if (!strcmp (str, "g"))
+	  {
+	    write_symbols = DBX_DEBUG;
+	    use_gdb_dbx_extensions = 1;
+	  }
+	else if (!strcmp (str, "G"))
+	  {
+	    write_symbols = DBX_DEBUG;
+	    use_gdb_dbx_extensions = 1;
+	  }
+#endif
+#ifdef SDB_DEBUGGING_INFO
+	else if (!strcmp (str, "g"))
+	  write_symbols = SDB_DEBUG;
+	else if (!strcmp (str, "G"))
+	  write_symbols = SDB_DEBUG;
+	else if (!strcmp (str, "g0"))
+	  write_symbols = SDB_DEBUG;
+	else if (!strcmp (str, "G0"))
+	  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 option `%s'", argv[i]);
+      }
+    else
+      filename = argv[i];
+
+#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 USG
+#ifndef VMS
+  if (print_mem_flag)
+    {
+      extern char **environ;
+      char *lim = (char *) sbrk (0);
+
+      fprintf (stderr, "Data size %d.\n",
+	       (int) lim - (int) &environ);
+      fflush (stderr);
+
+      system ("ps v");
+    }
+#endif /* not VMS */
+#endif /* not USG */
+
+  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;
+
+/* 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;
+	return;
+      }
+  error ("Invalid option `%s'", name);
+}
+
+/* Print default target switches for -version.  */
+
+void
+print_target_switch_defaults ()
+{
+  register int j;
+  register int mask = TARGET_DEFAULT;
+  fprintf (stderr, "default target switches:");
+  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 & mask) == target_switches[j].value)
+
+      fprintf (stderr, " -m%s", target_switches[j].name);
+
+  fprintf (stderr, "\n");
+}