/* Top level of GNU C compiler
- Copyright (C) 1987, 88, 89, 92, 93, 94, 1995 Free Software Foundation, Inc.
+ Copyright (C) 1987, 88, 89, 92-5, 1996 Free Software Foundation, Inc.
This file is part of GNU CC.
void abort ();
#endif
void set_target_switch ();
-static void print_switch_values ();
static char *decl_name ();
+void print_version ();
+int print_single_switch ();
+void print_switch_values ();
+/* Length of line when printing switch values. */
+#define MAX_LINE 75
+
+#ifdef __alpha
+extern char *sbrk ();
+#endif
+
/* Name of program invoked, sans directories. */
char *progname;
void (*interim_eh_hook) PROTO((tree));
+/* Highest label number used at the end of reload. */
+
+int max_label_num_after_reload;
+
/* Nonzero if generating code to do profiling. */
int profile_flag = 0;
int flag_omit_frame_pointer = 0;
+/* Nonzero means place each function into its own section on those platforms
+ which support arbitrary section names and unlimited numbers of sections. */
+
+int flag_function_sections = 0;
+
/* Nonzero to inhibit use of define_optimization peephole opts. */
int flag_no_peephole = 0;
int flag_pic;
-/* Nonzero means place uninitialized global data in the bss section. */
+/* Nonzero means don't place uninitialized global data in common storage
+ by default. */
int flag_no_common;
/* -fverbose-asm causes extra commentary information to be produced in
the generated assembly code (to make it more readable). This option
is generally only of use to those who actually need to read the
- generated assembly code (perhaps while debugging the compiler itself). */
+ generated assembly code (perhaps while debugging the compiler itself).
+ -fverbose-asm is the default. -fno-verbose-asm causes the extra information
+ to be omitted and is useful when comparing two assembler files. */
-int flag_verbose_asm = 0;
+int flag_verbose_asm = 1;
+
+/* -dA causes debug commentary information to be produced in
+ the generated assembly code (to make it more readable). This option
+ is generally only of use to those who actually need to read the
+ generated assembly code (perhaps while debugging the compiler itself).
+ Currently, this switch is only used by dwarfout.c; however, it is intended
+ to be a catchall for printing debug information in the assembler file. */
+
+int flag_debug_asm = 0;
/* -fgnu-linker specifies use of the GNU linker for initializations.
(Or, more generally, a linker that handles initializations.)
{"fast-math", &flag_fast_math, 1},
{"common", &flag_no_common, 0},
{"inhibit-size-directive", &flag_inhibit_size_directive, 1},
+ {"function-sections", &flag_function_sections, 1},
{"verbose-asm", &flag_verbose_asm, 1},
{"gnu-linker", &flag_gnu_linker, 1},
{"pack-struct", &flag_pack_struct, 1},
"-Wno-pointer-arith",
"-Wredundant-decls",
"-Wno-redundant-decls",
+ "-Wsign-compare",
+ "-Wno-sign-compare",
"-Wstrict-prototypes",
"-Wno-strict-prototypes",
"-Wtraditional",
fflush (dbr_sched_dump_file);
if (stack_reg_dump_file)
fflush (stack_reg_dump_file);
+ fflush (stdout);
+ fflush (stderr);
abort ();
}
(*print_error_function) (file);
if (input_file_stack && input_file_stack->next != 0
- && input_file_stack_tick != last_error_tick)
+ && input_file_stack_tick != last_error_tick
+ && file == input_filename)
{
fprintf (stderr, "In file included");
for (p = input_file_stack->next; p; p = p->next)
HOST_WIDE_INT v1 = va_arg(ap, HOST_WIDE_INT);
HOST_WIDE_INT v2 = va_arg(ap, HOST_WIDE_INT);
HOST_WIDE_INT v3 = va_arg(ap, HOST_WIDE_INT);
- fprintf (stderr, s, v1, v2, v3);
+ HOST_WIDE_INT v4 = va_arg(ap, HOST_WIDE_INT);
+ fprintf (stderr, s, v1, v2, v3, v4);
}
#endif
}
fatal ("virtual memory exhausted");
return result;
}
+
+/* Same as `strdup' but report error if no memory available. */
+
+char *
+xstrdup (s)
+ register char *s;
+{
+ register char *result = (char *) malloc (strlen (s) + 1);
+
+ if (! result)
+ fatal ("virtual memory exhausted");
+ strcpy (result, s);
+ return result;
+}
\f
/* Return the logarithm of X, base 2, considering X unsigned,
if X is a power of 2. Otherwise, returns -1.
if (!output_bytecode)
{
ASM_FILE_START (asm_out_file);
+
+#ifdef ASM_COMMENT_START
+ if (flag_verbose_asm)
+ {
+ /* Print the list of options in effect. */
+ print_version (asm_out_file, ASM_COMMENT_START);
+ print_switch_values (asm_out_file, 0, MAX_LINE,
+ ASM_COMMENT_START, " ", "\n");
+ /* Add a blank line here so it appears in assembler output but not
+ screen output. */
+ fprintf (asm_out_file, "\n");
+ }
+#endif
}
/* Output something to inform GDB that this compilation was by GCC. Also
ASM_IDENTIFY_LANGUAGE (asm_out_file);
#endif
+#ifndef ASM_OUTPUT_SECTION_NAME
+ if (flag_function_sections)
+ {
+ warning ("-ffunction-sections not supported for this target.");
+ flag_function_sections = 0;
+ }
+#endif
+
+ if (flag_function_sections
+ && (profile_flag || profile_block_flag))
+ {
+ warning ("-ffunction-sections disabled; it makes profiling impossible.");
+ flag_function_sections = 0;
+ }
+
+ if (flag_function_sections && write_symbols != NO_DEBUG)
+ warning ("-ffunction-sections may affect debugging on some targets.");
+
if (output_bytecode)
{
if (profile_flag || profile_block_flag)
|| TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
&& DECL_INITIAL (decl) == 0
&& DECL_EXTERNAL (decl)
+ && ! DECL_ARTIFICIAL (decl)
&& ! TREE_PUBLIC (decl))
{
pedwarn_with_decl (decl,
&& ! DECL_EXTERNAL (decl)
&& ! TREE_PUBLIC (decl)
&& ! TREE_USED (decl)
- && ! DECL_REGISTER (decl)
+ && (TREE_CODE (decl) == FUNCTION_DECL || ! DECL_REGISTER (decl))
/* The TREE_USED bit for file-scope decls
is kept in the identifier, to handle multiple
external decls in different scopes. */
&& (DECL_INITIAL (decl) == 0
|| DECL_INITIAL (decl) == error_mark_node)))
assemble_variable (decl, top_level, at_end, 0);
- if (decl == last_assemble_variable_decl)
+ if (!output_bytecode
+ && decl == last_assemble_variable_decl)
{
ASM_FINISH_DECLARE_OBJECT (asm_out_file, decl,
top_level, at_end);
if (DECL_SAVED_INSNS (decl) == 0)
{
- int specd = DECL_INLINE (decl);
+ int inlineable = 0;
char *lose;
/* If requested, consider whether to make this function inline. */
- if (specd || flag_inline_functions)
+ if (DECL_INLINE (decl) || flag_inline_functions)
TIMEVAR (integration_time,
{
lose = function_cannot_inline_p (decl);
- /* If not optimizing, then make sure the DECL_INLINE
- bit is off. */
if (lose || ! optimize)
{
- if (warn_inline && specd)
+ if (warn_inline && DECL_INLINE (decl))
warning_with_decl (decl, lose);
- DECL_INLINE (decl) = 0;
DECL_ABSTRACT_ORIGIN (decl) = 0;
/* Don't really compile an extern inline function.
If we can't make it inline, pretend
}
}
else
- DECL_INLINE (decl) = 1;
+ /* ??? Note that this has the effect of making it look
+ like "inline" was specified for a function if we choose
+ to inline it. This isn't quite right, but it's
+ probably not worth the trouble to fix. */
+ inlineable = DECL_INLINE (decl) = 1;
});
insns = get_insns ();
compile it by itself, defer decision till end of compilation.
finish_compilation will call rest_of_compilation again
for those functions that need to be output. Also defer those
- functions that we are supposed to defer. */
-
- if (DECL_DEFER_OUTPUT (decl)
- || ((specd || DECL_INLINE (decl))
- && ((! TREE_PUBLIC (decl) && ! TREE_ADDRESSABLE (decl)
- && ! flag_keep_inline_functions)
- || DECL_EXTERNAL (decl))))
+ functions that we are supposed to defer. We cannot defer
+ functions containing nested functions since the nested function
+ data is in our non-saved obstack. */
+
+ if (! current_function_contains_functions
+ && (DECL_DEFER_OUTPUT (decl)
+ || (DECL_INLINE (decl)
+ && ((! TREE_PUBLIC (decl) && ! TREE_ADDRESSABLE (decl)
+ && ! flag_keep_inline_functions)
+ || DECL_EXTERNAL (decl)))))
{
DECL_DEFER_OUTPUT (decl) = 1;
}
#endif
TIMEVAR (integration_time, save_for_inline_nocopy (decl));
+ RTX_INTEGRATED_P (DECL_SAVED_INSNS (decl)) = inlineable;
goto exit_rest_of_compilation;
}
}
/* If we have to compile the function now, save its rtl and subdecls
so that its compilation will not affect what others get. */
- if (DECL_INLINE (decl) || DECL_DEFER_OUTPUT (decl))
+ if (inlineable || DECL_DEFER_OUTPUT (decl))
{
#ifdef DWARF_DEBUGGING_INFO
/* Generate the DWARF info for the "abstract" instance of
saved_block_tree = DECL_INITIAL (decl);
saved_arguments = DECL_ARGUMENTS (decl);
TIMEVAR (integration_time, save_for_inline_copying (decl));
+ RTX_INTEGRATED_P (DECL_SAVED_INSNS (decl)) = inlineable;
}
/* If specified extern inline but we aren't inlining it, we are
done. */
- if (specd && DECL_EXTERNAL (decl))
+ if (DECL_INLINE (decl) && DECL_EXTERNAL (decl))
goto exit_rest_of_compilation;
}
for all references to such slots. */
/* fixup_stack_slots (); */
- /* Do jump optimization the first time, if -opt.
- Also do it if -W, but in that case it doesn't change the rtl code,
- it only computes whether control can drop off the end of the function. */
-
- if (optimize > 0 || extra_warnings || warn_return_type
- /* If function is `noreturn', we should warn if it tries to return. */
- || TREE_THIS_VOLATILE (decl))
- {
- TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0));
- TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 1));
- }
+ /* Always do one jump optimization pass to ensure that JUMP_LABEL fields
+ are initialized and to compute whether control can drop off the end
+ of the function. */
+ TIMEVAR (jump_time, reg_scan (insns, max_reg_num (), 0));
+ TIMEVAR (jump_time, jump_optimize (insns, 0, 0, 1));
/* Now is when we stop if -fsyntax-only and -Wreturn-type. */
if (rtl_dump_and_exit || flag_syntax_only || DECL_DEFER_OUTPUT (decl))
fprintf (global_reg_dump_file, "\n;; Function %s\n\n",
IDENTIFIER_POINTER (DECL_NAME (decl))));
+ /* Save the last label number used so far, so reorg can tell
+ when it's safe to kill spill regs. */
+ max_label_num_after_reload = max_label_num ();
+
/* Unless we did stupid register allocation,
allocate remaining pseudo-regs, then do the reload pass
fixing up any insns that are invalid. */
reload_completed = 0;
+ /* Clear out the insn_length contents now that they are no longer valid. */
+ init_insn_lengths ();
+
/* Clear out the real_constant_chain before some of the rtx's
it runs through become garbage. */
resume_temporary_allocation ();
+ /* Show no temporary slots allocated. */
+
+ init_temp_slots ();
+
/* The parsing time is all the time spent in yyparse
*except* what is spent in this function. */
flag_inline_functions = 1;
}
+ /* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can
+ modify it. */
+ target_flags = 0;
+ set_target_switch ("");
+
#ifdef OPTIMIZATION_OPTIONS
/* Allow default optimizations to be specified on a per-machine basis. */
OPTIMIZATION_OPTIONS (optimize);
/* Initialize register usage now so switches may override. */
init_reg_sets ();
- target_flags = 0;
- set_target_switch ("");
-
for (i = 1; i < argc; i++)
{
int j;
case 'y':
set_yydebug (1);
break;
-
case 'x':
rtl_dump_and_exit = 1;
break;
+ case 'A':
+ flag_debug_asm = 1;
+ break;
}
}
else if (str[0] == 'f')
}
else if (!strcmp (str, "p"))
{
- if (!output_bytecode)
- profile_flag = 1;
- else
- error ("profiling not supported in bytecode compilation");
+ 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;
+ profile_block_flag = (profile_block_flag < 2) ? 1 : 3;
+#endif
+ }
+ else if (!strcmp (str, "ax"))
+ {
+#if !defined (FUNCTION_BLOCK_PROFILER_EXIT) || !defined (BLOCK_PROFILER) || !defined (FUNCTION_BLOCK_PROFILER)
+ warning ("`-ax' option (jump profiling) not supported");
+#else
+ profile_block_flag = (!profile_block_flag
+ || profile_block_flag == 2) ? 2 : 3;
#endif
}
else if (str[0] == 'g')
use_gnu_debug_info_extensions = DEFAULT_GDB_EXTENSIONS;
#endif
if (write_symbols == NO_DEBUG)
- warning ("`-%s' option not supported on this version of GCC", str);
+ warning ("`-%s' not supported by this configuration of GCC",
+ str);
else if (level == 0)
write_symbols = NO_DEBUG;
else
OVERRIDE_OPTIONS;
#endif
+ if (profile_block_flag == 3)
+ {
+ warning ("`-ax' and `-a' are conflicting options. `-a' ignored.");
+ profile_block_flag = 2;
+ }
+
/* Unrolling all loops implies that standard loop unrolling must also
be done. */
if (flag_unroll_all_loops)
option flags in use. */
if (version_flag)
{
- fprintf (stderr, "%s version %s", language_string, version_string);
-#ifdef TARGET_VERSION
- TARGET_VERSION;
-#endif
-#ifdef __GNUC__
-#ifndef __VERSION__
-#define __VERSION__ "[unknown]"
-#endif
- fprintf (stderr, " compiled by GNU C version %s.\n", __VERSION__);
-#else
- fprintf (stderr, " compiled by CC.\n");
-#endif
+ print_version (stderr, "");
if (! quiet_flag)
- print_switch_values ();
+ print_switch_values (stderr, 0, MAX_LINE, "", " ", "\n");
}
compile_file (filename);
error ("Invalid option `%s'", name);
}
\f
-/* Variable used for communication between the following two routines. */
+/* Print version information to FILE.
+ Each line begins with INDENT (for the case where FILE is the
+ assembler output file). */
-static int line_position;
-
-/* Print an option value and adjust the position in the line. */
-
-static void
-print_single_switch (type, name)
- char *type, *name;
+void
+print_version (file, indent)
+ FILE *file;
+ char *indent;
{
- fprintf (stderr, " %s%s", type, name);
+ fprintf (file, "%s%s%s version %s", indent, *indent != 0 ? " " : "",
+ language_string, version_string);
+ fprintf (file, " (%s)", TARGET_NAME);
+#ifdef __GNUC__
+#ifndef __VERSION__
+#define __VERSION__ "[unknown]"
+#endif
+ fprintf (file, " compiled by GNU C version %s.\n", __VERSION__);
+#else
+ fprintf (file, " compiled by CC.\n");
+#endif
+}
- line_position += strlen (type) + strlen (name) + 1;
+/* Print an option value and return the adjusted position in the line.
+ ??? We don't handle error returns from fprintf (disk full). */
- if (line_position > 65)
+int
+print_single_switch (file, pos, max, indent, sep, term, type, name)
+ FILE *file;
+ int pos, max;
+ char *indent, *sep, *term, *type, *name;
+{
+ if (pos != 0
+ && pos + strlen (sep) + strlen (type) + strlen (name) > max)
+ {
+ fprintf (file, "%s", term);
+ pos = 0;
+ }
+ if (pos == 0)
{
- fprintf (stderr, "\n\t");
- line_position = 8;
+ pos = fprintf (file, "%s", indent);
}
+ pos += fprintf (file, "%s%s%s", sep, type, name);
+ return pos;
}
-/* Print default target switches for -version. */
+/* Print active target switches to FILE.
+ POS is the current cursor position and MAX is the size of a "line".
+ Each line begins with INDENT and ends with TERM.
+ Each switch is separated from the next by SEP. */
-static void
-print_switch_values ()
+void
+print_switch_values (file, pos, max, indent, sep, term)
+ FILE *file;
+ int pos, max;
+ char *indent, *sep, *term;
{
- register int j;
+ int j, flags;
+ char **p;
+
+ /* Print the options as passed. */
+
+ pos = print_single_switch (file, pos, max, indent, *indent ? " " : "", term,
+ "options passed: ", "");
+
+ for (p = &save_argv[1]; *p != NULL; p++)
+ if (**p == '-')
+ {
+ /* Ignore these. */
+ if (strcmp (*p, "-o") == 0)
+ {
+ if (p[1] != NULL)
+ p++;
+ continue;
+ }
+ if (strcmp (*p, "-quiet") == 0)
+ continue;
+ if (strcmp (*p, "-version") == 0)
+ continue;
+ if ((*p)[1] == 'd')
+ continue;
+
+ pos = print_single_switch (file, pos, max, indent, sep, term, *p, "");
+ }
+ if (pos > 0)
+ fprintf (file, "%s", term);
+
+ /* Print the -f and -m options that have been enabled.
+ We don't handle language specific options but printing argv
+ should suffice. */
- fprintf (stderr, "enabled:");
- line_position = 8;
+ pos = print_single_switch (file, 0, max, indent, *indent ? " " : "", term,
+ "options enabled: ", "");
for (j = 0; j < sizeof f_options / sizeof f_options[0]; j++)
if (*f_options[j].variable == f_options[j].on_value)
- print_single_switch ("-f", f_options[j].string);
+ pos = print_single_switch (file, pos, max, indent, sep, term,
+ "-f", f_options[j].string);
- for (j = 0; j < sizeof W_options / sizeof W_options[0]; j++)
- if (*W_options[j].variable == W_options[j].on_value)
- print_single_switch ("-W", W_options[j].string);
+ /* Print target specific options. */
+ flags = target_flags;
for (j = 0; j < sizeof target_switches / sizeof target_switches[0]; j++)
if (target_switches[j].name[0] != '\0'
&& target_switches[j].value > 0
&& ((target_switches[j].value & target_flags)
== target_switches[j].value))
- print_single_switch ("-m", target_switches[j].name);
+ {
+ pos = print_single_switch (file, pos, max, indent, sep, term,
+ "-m", target_switches[j].name);
+ flags &= ~ target_switches[j].value;
+ }
+
+#ifdef TARGET_OPTIONS
+ for (j = 0; j < sizeof target_options / sizeof target_options[0]; j++)
+ if (*target_options[j].variable != NULL)
+ {
+ char prefix[256];
+ sprintf (prefix, "-m%s", target_options[j].prefix);
+ pos = print_single_switch (file, pos, max, indent, sep, term,
+ prefix, *target_options[j].variable);
+ }
+#endif
- fprintf (stderr, "\n");
+ fprintf (file, "%s", term);
}
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