forked from illumos/gcc
/
toplev.c
2238 lines (1848 loc) · 60.9 KB
/
toplev.c
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/* Top level of GCC compilers (cc1, cc1plus, etc.)
Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
Free Software Foundation, Inc.
This file is part of GCC.
GCC 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 3, or (at your option) any later
version.
GCC 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 GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
/* This is the top level of cc1/c++.
It parses command args, opens files, invokes the various passes
in the proper order, and counts the time used by each.
Error messages and low-level interface to malloc also handled here. */
#include "config.h"
#undef FLOAT /* This is for hpux. They should change hpux. */
#undef FFS /* Some systems define this in param.h. */
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include <signal.h>
#ifdef HAVE_SYS_RESOURCE_H
# include <sys/resource.h>
#endif
#ifdef HAVE_SYS_TIMES_H
# include <sys/times.h>
#endif
#include "line-map.h"
#include "input.h"
#include "tree.h"
#include "version.h"
#include "rtl.h"
#include "tm_p.h"
#include "flags.h"
#include "insn-attr.h"
#include "insn-config.h"
#include "insn-flags.h"
#include "hard-reg-set.h"
#include "recog.h"
#include "output.h"
#include "except.h"
#include "function.h"
#include "toplev.h"
#include "expr.h"
#include "basic-block.h"
#include "intl.h"
#include "ggc.h"
#include "graph.h"
#include "regs.h"
#include "timevar.h"
#include "diagnostic.h"
#include "params.h"
#include "reload.h"
#include "ira.h"
#include "dwarf2asm.h"
#include "integrate.h"
#include "real.h"
#include "debug.h"
#include "target.h"
#include "langhooks.h"
#include "cfglayout.h"
#include "cfgloop.h"
#include "hosthooks.h"
#include "cgraph.h"
#include "opts.h"
#include "coverage.h"
#include "value-prof.h"
#include "alloc-pool.h"
#include "tree-mudflap.h"
#include "tree-pass.h"
#include "gimple.h"
#if defined (DWARF2_UNWIND_INFO) || defined (DWARF2_DEBUGGING_INFO)
#include "dwarf2out.h"
#endif
#if defined(DBX_DEBUGGING_INFO) || defined(XCOFF_DEBUGGING_INFO)
#include "dbxout.h"
#endif
#ifdef SDB_DEBUGGING_INFO
#include "sdbout.h"
#endif
#ifdef XCOFF_DEBUGGING_INFO
#include "xcoffout.h" /* Needed for external data
declarations for e.g. AIX 4.x. */
#endif
static void general_init (const char *);
static void do_compile (void);
static void process_options (void);
static void backend_init (void);
static int lang_dependent_init (const char *);
static void init_asm_output (const char *);
static void finalize (void);
static void crash_signal (int) ATTRIBUTE_NORETURN;
static void setup_core_dumping (void);
static void compile_file (void);
/* Nonzero to dump debug info whilst parsing (-dy option). */
static int set_yydebug;
/* True if we don't need a backend (e.g. preprocessing only). */
static bool no_backend;
/* Length of line when printing switch values. */
#define MAX_LINE 75
/* Name of program invoked, sans directories. */
const char *progname;
/* Copy of argument vector to toplev_main. */
static const char **save_argv;
/* 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. */
const char *main_input_filename;
/* Used to enable -fvar-tracking, -fweb and -frename-registers according
to optimize and default_debug_hooks in process_options (). */
#define AUTODETECT_VALUE 2
/* Current position in real source file. */
location_t input_location;
struct line_maps *line_table;
/* Name to use as base of names for dump output files. */
const char *dump_base_name;
/* Name to use as a base for auxiliary output files. */
const char *aux_base_name;
/* Prefix for profile data files */
const char *profile_data_prefix;
/* A mask of target_flags that includes bit X if X was set or cleared
on the command line. */
int target_flags_explicit;
/* Debug hooks - dependent upon command line options. */
const struct gcc_debug_hooks *debug_hooks;
/* Debug hooks - target default. */
static const struct gcc_debug_hooks *default_debug_hooks;
/* Other flags saying which kinds of debugging dump have been requested. */
int rtl_dump_and_exit;
int flag_print_asm_name;
enum graph_dump_types graph_dump_format;
/* Name for output file of assembly code, specified with -o. */
const char *asm_file_name;
/* Nonzero means do optimizations. -O.
Particular numeric values stand for particular amounts of optimization;
thus, -O2 stores 2 here. However, the optimizations beyond the basic
ones are not controlled directly by this variable. Instead, they are
controlled by individual `flag_...' variables that are defaulted
based on this variable. */
int optimize = 0;
/* Nonzero means optimize for size. -Os.
The only valid values are zero and nonzero. When optimize_size is
nonzero, optimize defaults to 2, but certain individual code
bloating optimizations are disabled. */
int optimize_size = 0;
/* The FUNCTION_DECL for the function currently being compiled,
or 0 if between functions. */
tree current_function_decl;
/* Set to the FUNC_BEGIN label of the current function, or NULL
if none. */
const char * current_function_func_begin_label;
/* Nonzero means to collect statistics which might be expensive
and to print them when we are done. */
int flag_detailed_statistics = 0;
/* A random sequence of characters, unless overridden by user. */
static const char *flag_random_seed;
/* A local time stamp derived from the time of compilation. It will be
zero if the system cannot provide a time. It will be -1u, if the
user has specified a particular random seed. */
unsigned local_tick;
/* -f flags. */
/* Nonzero means `char' should be signed. */
int flag_signed_char;
/* Nonzero means give an enum type only as many bytes as it needs. A value
of 2 means it has not yet been initialized. */
int flag_short_enums;
/* Nonzero if structures and unions should be returned in memory.
This should only be defined if compatibility with another compiler or
with an ABI is needed, because it results in slower code. */
#ifndef DEFAULT_PCC_STRUCT_RETURN
#define DEFAULT_PCC_STRUCT_RETURN 1
#endif
/* Nonzero for -fpcc-struct-return: return values the same way PCC does. */
int flag_pcc_struct_return = DEFAULT_PCC_STRUCT_RETURN;
/* 0 means straightforward implementation of complex divide acceptable.
1 means wide ranges of inputs must work for complex divide.
2 means C99-like requirements for complex multiply and divide. */
int flag_complex_method = 1;
/* Nonzero means we should be saving declaration info into a .X file. */
int flag_gen_aux_info = 0;
/* Specified name of aux-info file. */
const char *aux_info_file_name;
/* Nonzero if we are compiling code for a shared library, zero for
executable. */
int flag_shlib;
/* Generate code for GNU or NeXT Objective-C runtime environment. */
#ifdef NEXT_OBJC_RUNTIME
int flag_next_runtime = 1;
#else
int flag_next_runtime = 0;
#endif
/* Set to the default thread-local storage (tls) model to use. */
enum tls_model flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC;
/* Set the default region and algorithm for the integrated register
allocator. */
enum ira_algorithm flag_ira_algorithm = IRA_ALGORITHM_CB;
enum ira_region flag_ira_region = IRA_REGION_MIXED;
/* Set the default value for -fira-verbose. */
unsigned int flag_ira_verbose = 5;
/* Nonzero means change certain warnings into errors.
Usually these are warnings about failure to conform to some standard. */
int flag_pedantic_errors = 0;
/* Nonzero means make permerror produce warnings instead of errors. */
int flag_permissive = 0;
/* -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;
/* -dP causes the rtl to be emitted as a comment in assembly. */
int flag_dump_rtl_in_asm = 0;
/* When non-NULL, indicates that whenever space is allocated on the
stack, the resulting stack pointer must not pass this
address---that is, for stacks that grow downward, the stack pointer
must always be greater than or equal to this address; for stacks
that grow upward, the stack pointer must be less than this address.
At present, the rtx may be either a REG or a SYMBOL_REF, although
the support provided depends on the backend. */
rtx stack_limit_rtx;
/* Nonzero if we should track variables. When
flag_var_tracking == AUTODETECT_VALUE it will be set according
to optimize, debug_info_level and debug_hooks in process_options (). */
int flag_var_tracking = AUTODETECT_VALUE;
/* Type of stack check. */
enum stack_check_type flag_stack_check = NO_STACK_CHECK;
/* True if the user has tagged the function with the 'section'
attribute. */
bool user_defined_section_attribute = false;
/* Values of the -falign-* flags: how much to align labels in code.
0 means `use default', 1 means `don't align'.
For each variable, there is an _log variant which is the power
of two not less than the variable, for .align output. */
int align_loops_log;
int align_loops_max_skip;
int align_jumps_log;
int align_jumps_max_skip;
int align_labels_log;
int align_labels_max_skip;
int align_functions_log;
typedef struct
{
const char *const string;
int *const variable;
const int on_value;
}
lang_independent_options;
/* Nonzero if subexpressions must be evaluated from left-to-right. */
int flag_evaluation_order = 0;
/* The user symbol prefix after having resolved same. */
const char *user_label_prefix;
static const param_info lang_independent_params[] = {
#define DEFPARAM(ENUM, OPTION, HELP, DEFAULT, MIN, MAX) \
{ OPTION, DEFAULT, false, MIN, MAX, HELP },
#include "params.def"
#undef DEFPARAM
{ NULL, 0, false, 0, 0, NULL }
};
/* Output files for assembler code (real compiler output)
and debugging dumps. */
FILE *asm_out_file;
FILE *aux_info_file;
FILE *dump_file = NULL;
const char *dump_file_name;
/* The current working directory of a translation. It's generally the
directory from which compilation was initiated, but a preprocessed
file may specify the original directory in which it was
created. */
static const char *src_pwd;
/* Initialize src_pwd with the given string, and return true. If it
was already initialized, return false. As a special case, it may
be called with a NULL argument to test whether src_pwd has NOT been
initialized yet. */
bool
set_src_pwd (const char *pwd)
{
if (src_pwd)
{
if (strcmp (src_pwd, pwd) == 0)
return true;
else
return false;
}
src_pwd = xstrdup (pwd);
return true;
}
/* Return the directory from which the translation unit was initiated,
in case set_src_pwd() was not called before to assign it a
different value. */
const char *
get_src_pwd (void)
{
if (! src_pwd)
{
src_pwd = getpwd ();
if (!src_pwd)
src_pwd = ".";
}
return src_pwd;
}
/* Called when the start of a function definition is parsed,
this function prints on stderr the name of the function. */
void
announce_function (tree decl)
{
if (!quiet_flag)
{
if (rtl_dump_and_exit)
fprintf (stderr, "%s ", IDENTIFIER_POINTER (DECL_NAME (decl)));
else
fprintf (stderr, " %s", lang_hooks.decl_printable_name (decl, 2));
fflush (stderr);
pp_needs_newline (global_dc->printer) = true;
diagnostic_set_last_function (global_dc, (diagnostic_info *) NULL);
}
}
/* Initialize local_tick with the time of day, or -1 if
flag_random_seed is set. */
static void
init_local_tick (void)
{
if (!flag_random_seed)
{
/* Get some more or less random data. */
#ifdef HAVE_GETTIMEOFDAY
{
struct timeval tv;
gettimeofday (&tv, NULL);
local_tick = tv.tv_sec * 1000 + tv.tv_usec / 1000;
}
#else
{
time_t now = time (NULL);
if (now != (time_t)-1)
local_tick = (unsigned) now;
}
#endif
}
else
local_tick = -1;
}
/* Set up a default flag_random_seed and local_tick, unless the user
already specified one. Must be called after init_local_tick. */
static void
init_random_seed (void)
{
unsigned HOST_WIDE_INT value;
static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
value = local_tick ^ getpid ();
sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
flag_random_seed = random_seed;
}
/* Obtain the random_seed string. Unless NOINIT, initialize it if
it's not provided in the command line. */
const char *
get_random_seed (bool noinit)
{
if (!flag_random_seed && !noinit)
init_random_seed ();
return flag_random_seed;
}
/* Modify the random_seed string to VAL. Return its previous
value. */
const char *
set_random_seed (const char *val)
{
const char *old = flag_random_seed;
flag_random_seed = val;
return old;
}
/* Decode the string P as an integral parameter.
If the string is indeed an integer return its numeric value else
issue an Invalid Option error for the option PNAME and return DEFVAL.
If PNAME is zero just return DEFVAL, do not call error. */
int
read_integral_parameter (const char *p, const char *pname, const int defval)
{
const char *endp = p;
while (*endp)
{
if (ISDIGIT (*endp))
endp++;
else
break;
}
if (*endp != 0)
{
if (pname != 0)
error ("invalid option argument %qs", pname);
return defval;
}
return atoi (p);
}
/* When compiling with a recent enough GCC, we use the GNU C "extern inline"
for floor_log2 and exact_log2; see toplev.h. That construct, however,
conflicts with the ISO C++ One Definition Rule. */
#if GCC_VERSION < 3004 || !defined (__cplusplus)
/* Given X, an unsigned number, return the largest int Y such that 2**Y <= X.
If X is 0, return -1. */
int
floor_log2 (unsigned HOST_WIDE_INT x)
{
int t = 0;
if (x == 0)
return -1;
#ifdef CLZ_HWI
t = HOST_BITS_PER_WIDE_INT - 1 - (int) CLZ_HWI (x);
#else
if (HOST_BITS_PER_WIDE_INT > 64)
if (x >= (unsigned HOST_WIDE_INT) 1 << (t + 64))
t += 64;
if (HOST_BITS_PER_WIDE_INT > 32)
if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 32))
t += 32;
if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 16))
t += 16;
if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 8))
t += 8;
if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 4))
t += 4;
if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 2))
t += 2;
if (x >= ((unsigned HOST_WIDE_INT) 1) << (t + 1))
t += 1;
#endif
return t;
}
/* Return the logarithm of X, base 2, considering X unsigned,
if X is a power of 2. Otherwise, returns -1. */
int
exact_log2 (unsigned HOST_WIDE_INT x)
{
if (x != (x & -x))
return -1;
#ifdef CTZ_HWI
return x ? CTZ_HWI (x) : -1;
#else
return floor_log2 (x);
#endif
}
#endif /* GCC_VERSION < 3004 || !defined (__cplusplus) */
/* Handler for fatal signals, such as SIGSEGV. These are transformed
into ICE messages, which is much more user friendly. In case the
error printer crashes, reset the signal to prevent infinite recursion. */
static void
crash_signal (int signo)
{
signal (signo, SIG_DFL);
/* If we crashed while processing an ASM statement, then be a little more
graceful. It's most likely the user's fault. */
if (this_is_asm_operands)
{
output_operand_lossage ("unrecoverable error");
exit (FATAL_EXIT_CODE);
}
internal_error ("%s", strsignal (signo));
}
/* Arrange to dump core on error. (The regular error message is still
printed first, except in the case of abort().) */
static void
setup_core_dumping (void)
{
#ifdef SIGABRT
signal (SIGABRT, SIG_DFL);
#endif
#if defined(HAVE_SETRLIMIT)
{
struct rlimit rlim;
if (getrlimit (RLIMIT_CORE, &rlim) != 0)
fatal_error ("getting core file size maximum limit: %m");
rlim.rlim_cur = rlim.rlim_max;
if (setrlimit (RLIMIT_CORE, &rlim) != 0)
fatal_error ("setting core file size limit to maximum: %m");
}
#endif
diagnostic_abort_on_error (global_dc);
}
/* Strip off a legitimate source ending from the input string NAME of
length LEN. Rather than having to know the names used by all of
our front ends, we strip off an ending of a period followed by
up to five characters. (Java uses ".class".) */
void
strip_off_ending (char *name, int len)
{
int i;
for (i = 2; i < 6 && len > i; i++)
{
if (name[len - i] == '.')
{
name[len - i] = '\0';
break;
}
}
}
/* Output a quoted string. */
void
output_quoted_string (FILE *asm_file, const char *string)
{
#ifdef OUTPUT_QUOTED_STRING
OUTPUT_QUOTED_STRING (asm_file, string);
#else
char c;
putc ('\"', asm_file);
while ((c = *string++) != 0)
{
if (ISPRINT (c))
{
if (c == '\"' || c == '\\')
putc ('\\', asm_file);
putc (c, asm_file);
}
else
fprintf (asm_file, "\\%03o", (unsigned char) c);
}
putc ('\"', asm_file);
#endif
}
/* Output a file name in the form wanted by System V. */
void
output_file_directive (FILE *asm_file, const char *input_name)
{
int len;
const char *na;
if (input_name == NULL)
input_name = "<stdin>";
else
input_name = remap_debug_filename (input_name);
len = strlen (input_name);
na = input_name + len;
/* NA gets INPUT_NAME sans directory names. */
while (na > input_name)
{
if (IS_DIR_SEPARATOR (na[-1]))
break;
na--;
}
#ifdef ASM_OUTPUT_SOURCE_FILENAME
ASM_OUTPUT_SOURCE_FILENAME (asm_file, na);
#else
fprintf (asm_file, "\t.file\t");
output_quoted_string (asm_file, na);
fputc ('\n', asm_file);
#endif
}
/* A subroutine of wrapup_global_declarations. We've come to the end of
the compilation unit. All deferred variables should be undeferred,
and all incomplete decls should be finalized. */
void
wrapup_global_declaration_1 (tree decl)
{
/* We're not deferring this any longer. Assignment is conditional to
avoid needlessly dirtying PCH pages. */
if (CODE_CONTAINS_STRUCT (TREE_CODE (decl), TS_DECL_WITH_VIS)
&& DECL_DEFER_OUTPUT (decl) != 0)
DECL_DEFER_OUTPUT (decl) = 0;
if (TREE_CODE (decl) == VAR_DECL && DECL_SIZE (decl) == 0)
lang_hooks.finish_incomplete_decl (decl);
}
/* A subroutine of wrapup_global_declarations. Decide whether or not DECL
needs to be output. Return true if it is output. */
bool
wrapup_global_declaration_2 (tree decl)
{
if (TREE_ASM_WRITTEN (decl) || DECL_EXTERNAL (decl))
return false;
/* Don't write out static consts, unless we still need them.
We also keep static consts if not optimizing (for debugging),
unless the user specified -fno-keep-static-consts.
??? They might be better written into the debug information.
This is possible when using DWARF.
A language processor that wants static constants to be always
written out (even if it is not used) is responsible for
calling rest_of_decl_compilation itself. E.g. the C front-end
calls rest_of_decl_compilation from finish_decl.
One motivation for this is that is conventional in some
environments to write things like:
static const char rcsid[] = "... version string ...";
intending to force the string to be in the executable.
A language processor that would prefer to have unneeded
static constants "optimized away" would just defer writing
them out until here. E.g. C++ does this, because static
constants are often defined in header files.
??? A tempting alternative (for both C and C++) would be
to force a constant to be written if and only if it is
defined in a main file, as opposed to an include file. */
if (TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl))
{
struct varpool_node *node;
bool needed = true;
node = varpool_node (decl);
if (node->finalized)
needed = false;
else if (node->alias)
needed = false;
else if (!cgraph_global_info_ready
&& (TREE_USED (decl)
|| TREE_USED (DECL_ASSEMBLER_NAME (decl))))
/* needed */;
else if (node->needed)
/* needed */;
else if (DECL_COMDAT (decl))
needed = false;
else if (TREE_READONLY (decl) && !TREE_PUBLIC (decl)
&& (optimize || !flag_keep_static_consts
|| DECL_ARTIFICIAL (decl)))
needed = false;
if (needed)
{
rest_of_decl_compilation (decl, 1, 1);
return true;
}
}
return false;
}
/* Do any final processing required for the declarations in VEC, of
which there are LEN. We write out inline functions and variables
that have been deferred until this point, but which are required.
Returns nonzero if anything was put out. */
bool
wrapup_global_declarations (tree *vec, int len)
{
bool reconsider, output_something = false;
int i;
for (i = 0; i < len; i++)
wrapup_global_declaration_1 (vec[i]);
/* Now emit any global variables or functions that we have been
putting off. We need to loop in case one of the things emitted
here references another one which comes earlier in the list. */
do
{
reconsider = false;
for (i = 0; i < len; i++)
reconsider |= wrapup_global_declaration_2 (vec[i]);
if (reconsider)
output_something = true;
}
while (reconsider);
return output_something;
}
/* A subroutine of check_global_declarations. Issue appropriate warnings
for the global declaration DECL. */
void
check_global_declaration_1 (tree decl)
{
/* Warn about any function declared static but not defined. We don't
warn about variables, because many programs have static variables
that exist only to get some text into the object file. */
if (TREE_CODE (decl) == FUNCTION_DECL
&& DECL_INITIAL (decl) == 0
&& DECL_EXTERNAL (decl)
&& ! DECL_ARTIFICIAL (decl)
&& ! TREE_NO_WARNING (decl)
&& ! TREE_PUBLIC (decl)
&& (warn_unused_function
|| TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl))))
{
if (TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)))
pedwarn (input_location, 0, "%q+F used but never defined", decl);
else
warning (OPT_Wunused_function, "%q+F declared %<static%> but never defined", decl);
/* This symbol is effectively an "extern" declaration now. */
TREE_PUBLIC (decl) = 1;
assemble_external (decl);
}
/* Warn about static fns or vars defined but not used. */
if (((warn_unused_function && TREE_CODE (decl) == FUNCTION_DECL)
/* We don't warn about "static const" variables because the
"rcs_id" idiom uses that construction. */
|| (warn_unused_variable
&& TREE_CODE (decl) == VAR_DECL && ! TREE_READONLY (decl)))
&& ! DECL_IN_SYSTEM_HEADER (decl)
&& ! TREE_USED (decl)
/* The TREE_USED bit for file-scope decls is kept in the identifier,
to handle multiple external decls in different scopes. */
&& ! (DECL_NAME (decl) && TREE_USED (DECL_NAME (decl)))
&& ! DECL_EXTERNAL (decl)
&& ! TREE_PUBLIC (decl)
/* A volatile variable might be used in some non-obvious way. */
&& ! TREE_THIS_VOLATILE (decl)
/* Global register variables must be declared to reserve them. */
&& ! (TREE_CODE (decl) == VAR_DECL && DECL_REGISTER (decl))
/* Otherwise, ask the language. */
&& lang_hooks.decls.warn_unused_global (decl))
warning ((TREE_CODE (decl) == FUNCTION_DECL)
? OPT_Wunused_function
: OPT_Wunused_variable,
"%q+D defined but not used", decl);
}
/* Issue appropriate warnings for the global declarations in VEC (of
which there are LEN). */
void
check_global_declarations (tree *vec, int len)
{
int i;
for (i = 0; i < len; i++)
check_global_declaration_1 (vec[i]);
}
/* Emit debugging information for all global declarations in VEC. */
void
emit_debug_global_declarations (tree *vec, int len)
{
int i;
/* Avoid confusing the debug information machinery when there are errors. */
if (errorcount != 0 || sorrycount != 0)
return;
timevar_push (TV_SYMOUT);
for (i = 0; i < len; i++)
debug_hooks->global_decl (vec[i]);
timevar_pop (TV_SYMOUT);
}
/* Warn about a use of an identifier which was marked deprecated. */
void
warn_deprecated_use (tree node)
{
if (node == 0 || !warn_deprecated_decl)
return;
if (DECL_P (node))
{
expanded_location xloc = expand_location (DECL_SOURCE_LOCATION (node));
warning (OPT_Wdeprecated_declarations,
"%qD is deprecated (declared at %s:%d)",
node, xloc.file, xloc.line);
}
else if (TYPE_P (node))
{
const char *what = NULL;
tree decl = TYPE_STUB_DECL (node);
if (TYPE_NAME (node))
{
if (TREE_CODE (TYPE_NAME (node)) == IDENTIFIER_NODE)
what = IDENTIFIER_POINTER (TYPE_NAME (node));
else if (TREE_CODE (TYPE_NAME (node)) == TYPE_DECL
&& DECL_NAME (TYPE_NAME (node)))
what = IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (node)));
}
if (decl)
{
expanded_location xloc
= expand_location (DECL_SOURCE_LOCATION (decl));
if (what)
warning (OPT_Wdeprecated_declarations,
"%qs is deprecated (declared at %s:%d)", what,
xloc.file, xloc.line);
else
warning (OPT_Wdeprecated_declarations,
"type is deprecated (declared at %s:%d)",
xloc.file, xloc.line);
}
else
{
if (what)
warning (OPT_Wdeprecated_declarations, "%qs is deprecated", what);
else
warning (OPT_Wdeprecated_declarations, "type is deprecated");
}
}
}
/* Compile an entire translation unit. Write a file of assembly
output and various debugging dumps. */
static void
compile_file (void)
{
/* Initialize yet another pass. */
ggc_protect_identifiers = true;
init_cgraph ();
init_final (main_input_filename);
coverage_init (aux_base_name);
statistics_init ();
timevar_push (TV_PARSE);
/* Call the parser, which parses the entire file (calling
rest_of_compilation for each function). */
lang_hooks.parse_file (set_yydebug);
/* Compilation is now finished except for writing
what's left of the symbol table output. */
timevar_pop (TV_PARSE);
if (flag_syntax_only)
return;
ggc_protect_identifiers = false;
lang_hooks.decls.final_write_globals ();
if (errorcount || sorrycount)
return;
varpool_assemble_pending_decls ();
finish_aliases_2 ();
/* This must occur after the loop to output deferred functions.
Else the coverage initializer would not be emitted if all the
functions in this compilation unit were deferred. */
coverage_finish ();
/* Likewise for mudflap static object registrations. */
if (flag_mudflap)
mudflap_finish_file ();
/* Likewise for emulated thread-local storage. */
if (!targetm.have_tls)
emutls_finish ();