/* Command line option handling.
- Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
Contributed by Neil Booth.
This file is part of GCC.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA. */
#include "config.h"
#include "system.h"
#include "tm_p.h" /* For OPTIMIZATION_OPTIONS. */
#include "insn-attr.h" /* For INSN_SCHEDULING. */
#include "target.h"
+#include "tree-pass.h"
/* Value of the -G xx switch, and whether it was passed or not. */
unsigned HOST_WIDE_INT g_switch_value;
/* The default visibility for all symbols (unless overridden) */
enum symbol_visibility default_visibility = VISIBILITY_DEFAULT;
+/* Disable unit-at-a-time for frontends that might be still broken in this
+ respect. */
+
+bool no_unit_at_a_time_default;
+
/* Global visibility options. */
struct visibility_flags visibility_options;
static bool profile_arc_flag_set, flag_profile_values_set;
static bool flag_unroll_loops_set, flag_tracer_set;
static bool flag_value_profile_transformations_set;
-bool flag_speculative_prefetching_set;
static bool flag_peel_loops_set, flag_branch_probabilities_set;
/* Input file names. */
unsigned num_in_fnames;
static size_t find_opt (const char *, int);
-static int common_handle_option (size_t scode, const char *arg, int value);
+static int common_handle_option (size_t scode, const char *arg, int value,
+ unsigned int lang_mask);
static void handle_param (const char *);
static void set_Wextra (int);
static unsigned int handle_option (const char **argv, unsigned int lang_mask);
unsigned int lang_mask);
static void handle_options (unsigned int, const char **, unsigned int);
static void wrap_help (const char *help, const char *item, unsigned int);
+static void print_target_help (void);
static void print_help (void);
static void print_param_help (void);
-static void print_filtered_help (unsigned int flag);
+static void print_filtered_help (unsigned int);
static unsigned int print_switch (const char *text, unsigned int indent);
static void set_debug_level (enum debug_info_type type, int extended,
const char *arg);
if (mask & (1U << n))
len += strlen (lang_name) + 1;
- result = xmalloc (len);
+ result = XNEWVEC (char, len);
len = 0;
for (n = 0; (lang_name = lang_names[n]) != 0; n++)
if (mask & (1U << n))
bad_lang = write_langs (lang_mask);
/* Eventually this should become a hard error IMO. */
- warning ("command line option \"%s\" is valid for %s but not for %s",
+ warning (0, "command line option \"%s\" is valid for %s but not for %s",
text, ok_langs, bad_lang);
free (ok_langs);
opt = argv[0];
- /* Drop the "no-" from negative switches. */
- if ((opt[1] == 'W' || opt[1] == 'f')
+ opt_index = find_opt (opt + 1, lang_mask | CL_COMMON | CL_TARGET);
+ if (opt_index == cl_options_count
+ && (opt[1] == 'W' || opt[1] == 'f' || opt[1] == 'm')
&& opt[2] == 'n' && opt[3] == 'o' && opt[4] == '-')
{
+ /* Drop the "no-" from negative switches. */
size_t len = strlen (opt) - 3;
- dup = xmalloc (len + 1);
+ dup = XNEWVEC (char, len + 1);
dup[0] = '-';
dup[1] = opt[1];
memcpy (dup + 2, opt + 5, len - 2 + 1);
opt = dup;
value = 0;
+ opt_index = find_opt (opt + 1, lang_mask | CL_COMMON | CL_TARGET);
}
- opt_index = find_opt (opt + 1, lang_mask | CL_COMMON);
if (opt_index == cl_options_count)
goto done;
/* We've recognized this switch. */
result = 1;
+ /* Check to see if the option is disabled for this configuration. */
+ if (option->flags & CL_DISABLED)
+ {
+ error ("command line option %qs"
+ " is not supported by this configuration", opt);
+ goto done;
+ }
+
/* Sort out any argument the switch takes. */
if (option->flags & CL_JOINED)
{
/* Now we've swallowed any potential argument, complain if this
is a switch for a different front end. */
- if (!(option->flags & (lang_mask | CL_COMMON)))
+ if (!(option->flags & (lang_mask | CL_COMMON | CL_TARGET)))
{
complain_wrong_lang (argv[0], option, lang_mask);
goto done;
}
if (option->flag_var)
- {
- if (option->has_set_value)
- {
- if (value)
- *option->flag_var = option->set_value;
- else
- *option->flag_var = !option->set_value;
- }
- else
- *option->flag_var = value;
- }
+ switch (option->var_type)
+ {
+ case CLVC_BOOLEAN:
+ *(int *) option->flag_var = value;
+ break;
+
+ case CLVC_EQUAL:
+ *(int *) option->flag_var = (value
+ ? option->var_value
+ : !option->var_value);
+ break;
+
+ case CLVC_BIT_CLEAR:
+ case CLVC_BIT_SET:
+ if ((value != 0) == (option->var_type == CLVC_BIT_SET))
+ *(int *) option->flag_var |= option->var_value;
+ else
+ *(int *) option->flag_var &= ~option->var_value;
+ if (option->flag_var == &target_flags)
+ target_flags_explicit |= option->var_value;
+ break;
+
+ case CLVC_STRING:
+ *(const char **) option->flag_var = arg;
+ break;
+ }
if (option->flags & lang_mask)
if (lang_hooks.handle_option (opt_index, arg, value) == 0)
result = 0;
if (result && (option->flags & CL_COMMON))
- if (common_handle_option (opt_index, arg, value) == 0)
+ if (common_handle_option (opt_index, arg, value, lang_mask) == 0)
+ result = 0;
+
+ if (result && (option->flags & CL_TARGET))
+ if (!targetm.handle_option (opt_index, arg, value))
result = 0;
done:
#endif
flag_guess_branch_prob = 1;
flag_cprop_registers = 1;
- flag_loop_optimize = 1;
flag_if_conversion = 1;
flag_if_conversion2 = 1;
+ flag_ipa_pure_const = 1;
+ flag_ipa_reference = 1;
flag_tree_ccp = 1;
flag_tree_dce = 1;
flag_tree_dom = 1;
flag_tree_sra = 1;
flag_tree_copyrename = 1;
flag_tree_fre = 1;
+ flag_tree_copy_prop = 1;
+ flag_tree_sink = 1;
+ flag_tree_salias = 1;
+ if (!no_unit_at_a_time_default)
+ flag_unit_at_a_time = 1;
if (!optimize_size)
{
flag_cse_skip_blocks = 1;
flag_gcse = 1;
flag_expensive_optimizations = 1;
+ flag_ipa_type_escape = 1;
flag_strength_reduce = 1;
flag_rerun_cse_after_loop = 1;
- flag_rerun_loop_opt = 1;
flag_caller_saves = 1;
- flag_force_mem = 1;
flag_peephole2 = 1;
#ifdef INSN_SCHEDULING
flag_schedule_insns = 1;
flag_delete_null_pointer_checks = 1;
flag_reorder_blocks = 1;
flag_reorder_functions = 1;
- flag_unit_at_a_time = 1;
+ flag_tree_store_ccp = 1;
+ flag_tree_store_copy_prop = 1;
+ flag_tree_vrp = 1;
if (!optimize_size)
{
/* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can
modify it. */
- target_flags = 0;
- set_target_switch ("");
+ target_flags = targetm.default_target_flags;
- /* Unwind tables are always present when a target has ABI-specified unwind
- tables, so the default should be ON. */
-#ifdef TARGET_UNWIND_INFO
- flag_unwind_tables = TARGET_UNWIND_INFO;
-#endif
+ /* Some tagets have ABI-specified unwind tables. */
+ flag_unwind_tables = targetm.unwind_tables_default;
#ifdef OPTIMIZATION_OPTIONS
/* Allow default optimizations to be specified on a per-machine basis. */
this to `2' if -Wall is used, so we can avoid giving out
lots of errors for people who don't realize what -Wall does. */
if (warn_uninitialized == 1)
- warning ("-Wuninitialized is not supported without -O");
+ warning (OPT_Wuninitialized,
+ "-Wuninitialized is not supported without -O");
}
if (flag_really_no_inline == 2)
/* The optimization to partition hot and cold basic blocks into separate
sections of the .o and executable files does not work (currently)
- with exception handling. If flag_exceptions is turned on we need to
+ with exception handling. This is because there is no support for
+ generating unwind info. If flag_exceptions is turned on we need to
turn off the partitioning optimization. */
if (flag_exceptions && flag_reorder_blocks_and_partition)
{
- warning
+ inform
("-freorder-blocks-and-partition does not work with exceptions");
flag_reorder_blocks_and_partition = 0;
flag_reorder_blocks = 1;
}
- /* The optimization to partition hot and cold basic blocks into
- separate sections of the .o and executable files does not currently
- work correctly with DWARF debugging turned on. Until this is fixed
- we will disable the optimization when DWARF debugging is set. */
-
- if (flag_reorder_blocks_and_partition && write_symbols == DWARF2_DEBUG)
+ /* If user requested unwind info, then turn off the partitioning
+ optimization. */
+
+ if (flag_unwind_tables && ! targetm.unwind_tables_default
+ && flag_reorder_blocks_and_partition)
+ {
+ inform ("-freorder-blocks-and-partition does not support unwind info");
+ flag_reorder_blocks_and_partition = 0;
+ flag_reorder_blocks = 1;
+ }
+
+ /* If the target requested unwind info, then turn off the partitioning
+ optimization with a different message. Likewise, if the target does not
+ support named sections. */
+
+ if (flag_reorder_blocks_and_partition
+ && (!targetm.have_named_sections
+ || (flag_unwind_tables && targetm.unwind_tables_default)))
{
- warning
- ("-freorder-blocks-and-partition does not work with -g (currently)");
+ inform
+ ("-freorder-blocks-and-partition does not work on this architecture");
flag_reorder_blocks_and_partition = 0;
flag_reorder_blocks = 1;
}
VALUE assigned to a variable, it happens automatically. */
static int
-common_handle_option (size_t scode, const char *arg, int value)
+common_handle_option (size_t scode, const char *arg, int value,
+ unsigned int lang_mask)
{
enum opt_code code = (enum opt_code) scode;
break;
case OPT__target_help:
- display_target_options ();
+ print_target_help ();
exit_after_options = true;
break;
set_Wextra (value);
break;
+ case OPT_Werror_:
+ {
+ char *new_option;
+ int option_index;
+ new_option = XNEWVEC (char, strlen (arg) + 2);
+ new_option[0] = 'W';
+ strcpy (new_option+1, arg);
+ option_index = find_opt (new_option, lang_mask);
+ if (option_index == N_OPTS)
+ {
+ error ("-Werror-%s: No option -%s", arg, new_option);
+ }
+ else
+ {
+ int kind = value ? DK_ERROR : DK_WARNING;
+ diagnostic_classify_diagnostic (global_dc, option_index, kind);
+
+ /* -Werror=foo implies -Wfoo. */
+ if (cl_options[option_index].var_type == CLVC_BOOLEAN
+ && cl_options[option_index].flag_var
+ && kind == DK_ERROR)
+ *(int *) cl_options[option_index].flag_var = 1;
+ free (new_option);
+ }
+ }
+ break;
+
case OPT_Wextra:
set_Wextra (value);
break;
return 0;
break;
+ case OPT_fdiagnostics_show_option:
+ global_dc->show_option_requested = true;
+ break;
+
case OPT_fdump_:
if (!dump_switch_p (arg))
return 0;
flag_tracer = value;
if (!flag_value_profile_transformations_set)
flag_value_profile_transformations = value;
-#ifdef HAVE_prefetch
- if (0 && !flag_speculative_prefetching_set)
- flag_speculative_prefetching = value;
-#endif
break;
case OPT_fprofile_generate:
flag_profile_values = value;
if (!flag_value_profile_transformations_set)
flag_value_profile_transformations = value;
- if (!flag_unroll_loops_set)
- flag_unroll_loops = value;
-#ifdef HAVE_prefetch
- if (0 && !flag_speculative_prefetching_set)
- flag_speculative_prefetching = value;
-#endif
break;
case OPT_fprofile_values:
else if (!strcmp(arg, "protected"))
default_visibility = VISIBILITY_PROTECTED;
else
- error ("unrecognised visibility value \"%s\"", arg);
+ error ("unrecognized visibility value \"%s\"", arg);
}
break;
flag_value_profile_transformations_set = true;
break;
- case OPT_fspeculative_prefetching:
- flag_speculative_prefetching_set = true;
- break;
-
case OPT_frandom_seed:
/* The real switch is -fno-random-seed. */
if (value)
else if (!strcmp (arg, "local-exec"))
flag_tls_default = TLS_MODEL_LOCAL_EXEC;
else
- warning ("unknown tls-model \"%s\"", arg);
+ warning (0, "unknown tls-model \"%s\"", arg);
break;
case OPT_ftracer:
set_debug_level (XCOFF_DEBUG, code == OPT_gxcoff_, arg);
break;
- case OPT_m:
- set_target_switch (arg);
- break;
-
case OPT_o:
asm_file_name = arg;
break;
flag_pedantic_errors = pedantic = 1;
break;
+ case OPT_fforce_mem:
+ warning (0, "-f[no-]force-mem is nop and option will be removed in 4.2");
+ break;
+
default:
/* If the flag was handled in a standard way, assume the lack of
processing here is intentional. */
- if (cl_options[scode].flag_var)
- break;
-
- abort ();
+ gcc_assert (cl_options[scode].flag_var);
+ break;
}
return 1;
{
flag_signaling_nans = 0;
flag_rounding_math = 0;
+ flag_cx_limited_range = 1;
}
}
}
if (write_symbols == NO_DEBUG)
- warning ("target system does not support debug output");
+ warning (0, "target system does not support debug output");
}
}
else
}
}
+/* Display help for target options. */
+static void
+print_target_help (void)
+{
+ unsigned int i;
+ static bool displayed = false;
+
+ /* Avoid double printing for --help --target-help. */
+ if (displayed)
+ return;
+
+ displayed = true;
+ for (i = 0; i < cl_options_count; i++)
+ if ((cl_options[i].flags & (CL_TARGET | CL_UNDOCUMENTED)) == CL_TARGET)
+ {
+ printf (_("\nTarget specific options:\n"));
+ print_filtered_help (CL_TARGET);
+ break;
+ }
+}
+
/* Output --help text. */
static void
print_help (void)
lang_names[i]);
print_filtered_help (1U << i);
}
-
- display_target_options ();
+ print_target_help ();
}
/* Print the help for --param. */
const char *help, *opt, *tab;
static char *printed;
- if (flag == CL_COMMON)
+ if (flag == CL_COMMON || flag == CL_TARGET)
{
filter = flag;
if (!printed)
}
while (remaining);
}
+
+/* Return 1 if OPTION is enabled, 0 if it is disabled, or -1 if it isn't
+ a simple on-off switch. */
+
+int
+option_enabled (int opt_idx)
+{
+ const struct cl_option *option = &(cl_options[opt_idx]);
+ if (option->flag_var)
+ switch (option->var_type)
+ {
+ case CLVC_BOOLEAN:
+ return *(int *) option->flag_var != 0;
+
+ case CLVC_EQUAL:
+ return *(int *) option->flag_var == option->var_value;
+
+ case CLVC_BIT_CLEAR:
+ return (*(int *) option->flag_var & option->var_value) == 0;
+
+ case CLVC_BIT_SET:
+ return (*(int *) option->flag_var & option->var_value) != 0;
+
+ case CLVC_STRING:
+ break;
+ }
+ return -1;
+}
+
+/* Fill STATE with the current state of option OPTION. Return true if
+ there is some state to store. */
+
+bool
+get_option_state (int option, struct cl_option_state *state)
+{
+ if (cl_options[option].flag_var == 0)
+ return false;
+
+ switch (cl_options[option].var_type)
+ {
+ case CLVC_BOOLEAN:
+ case CLVC_EQUAL:
+ state->data = cl_options[option].flag_var;
+ state->size = sizeof (int);
+ break;
+
+ case CLVC_BIT_CLEAR:
+ case CLVC_BIT_SET:
+ state->ch = option_enabled (option);
+ state->data = &state->ch;
+ state->size = 1;
+ break;
+
+ case CLVC_STRING:
+ state->data = *(const char **) cl_options[option].flag_var;
+ if (state->data == 0)
+ state->data = "";
+ state->size = strlen (state->data) + 1;
+ break;
+ }
+ return true;
+}
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