/* Command line option handling.
- Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
Contributed by Neil Booth.
This file is part of GCC.
/* Hack for cooperation between set_Wunused and set_Wextra. */
static bool maybe_warn_unused_parameter;
+/* Type(s) of debugging information we are producing (if any). See
+ flags.h for the definitions of the different possible types of
+ debugging information. */
+enum debug_info_type write_symbols = NO_DEBUG;
+
+/* Level of debugging information we are producing. See flags.h for
+ the definitions of the different possible levels. */
+enum debug_info_level debug_info_level = DINFO_LEVEL_NONE;
+
+/* Nonzero means use GNU-only extensions in the generated symbolic
+ debugging information. Currently, this only has an effect when
+ write_symbols is set to DBX_DEBUG, XCOFF_DEBUG, or DWARF_DEBUG. */
+bool use_gnu_debug_info_extensions;
+
/* Columns of --help display. */
static unsigned int columns = 80;
/* What to print when a switch has no documentation. */
static const char undocumented_msg[] = N_("This switch lacks documentation");
+/* Used for bookkeeping on whether user set these flags so
+ -fprofile-use/-fprofile-generate does not use them. */
+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;
+static bool flag_peel_loops_set, flag_branch_probabilities_set;
+
+/* Input file names. */
+const char **in_fnames;
+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 void handle_param (const char *);
static void print_param_help (void);
static void print_filtered_help (unsigned int flag);
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);
/* Perform a binary search to find which option the command-line INPUT
matches. Returns its index in the option array, and N_OPTS
/* Interpret "-" or a non-switch as a file name. */
if (opt[0] != '-' || opt[1] == '\0')
{
- main_input_filename = opt;
- (*lang_hooks.handle_filename) (opt);
+ if (main_input_filename == NULL)
+ main_input_filename = opt;
+ add_input_filename (opt);
n = 1;
continue;
}
}
}
+/* Handle FILENAME from the command line. */
+void
+add_input_filename (const char *filename)
+{
+ num_in_fnames++;
+ in_fnames = xrealloc (in_fnames, num_in_fnames * sizeof (in_fnames[0]));
+ in_fnames[num_in_fnames - 1] = filename;
+}
+
/* Parse command line options and set default flag values. Do minimal
options processing. */
void
/* Perform language-specific options initialization. */
lang_mask = (*lang_hooks.init_options) (argc, argv);
+ lang_hooks.initialize_diagnostics (global_dc);
+
/* Scan to see what optimization level has been specified. That will
determine the default value of many flags. */
for (i = 1; i < argc; i++)
flag_guess_branch_prob = 1;
flag_cprop_registers = 1;
flag_loop_optimize = 1;
- flag_crossjumping = 1;
flag_if_conversion = 1;
flag_if_conversion2 = 1;
}
if (optimize >= 2)
{
+ flag_crossjumping = 1;
flag_optimize_sibling_calls = 1;
flag_cse_follow_jumps = 1;
flag_cse_skip_blocks = 1;
flag_delete_null_pointer_checks = 1;
flag_reorder_blocks = 1;
flag_reorder_functions = 1;
+ flag_unit_at_a_time = 1;
}
if (optimize >= 3)
flag_inline_functions = 1;
flag_rename_registers = 1;
flag_unswitch_loops = 1;
- flag_unit_at_a_time = 1;
+ flag_web = 1;
}
if (optimize < 2 || optimize_size)
/* 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
/* Initialize target_flags before OPTIMIZATION_OPTIONS so the latter can
modify it. */
flag_pie = value + value;
break;
+ case OPT_fabi_version_:
+ flag_abi_version = value;
+ break;
+
case OPT_falign_functions:
align_functions = !value;
break;
break;
case OPT_fbranch_probabilities:
+ flag_branch_probabilities_set = true;
flag_branch_probabilities = value;
break;
flag_branch_target_load_optimize2 = value;
break;
+ case OPT_fbtr_bb_exclusive:
+ flag_btr_bb_exclusive = value;
+ break;
+
case OPT_fcall_used_:
fix_register (arg, 0, 1);
break;
flag_gcse_sm = value;
break;
- case OPT_fgnu_linker:
- flag_gnu_linker = value;
+ case OPT_fgcse_las:
+ flag_gcse_las = value;
break;
case OPT_fguess_branch_probability:
case OPT_finline_limit_:
case OPT_finline_limit_eq:
- set_param_value ("max-inline-insns", value);
set_param_value ("max-inline-insns-single", value / 2);
set_param_value ("max-inline-insns-auto", value / 2);
set_param_value ("max-inline-insns-rtl", value);
- if (value / 4 < MIN_INLINE_INSNS)
- {
- if (value / 4 > 10)
- set_param_value ("min-inline-insns", value / 4);
- else
- set_param_value ("min-inline-insns", 10);
- }
break;
case OPT_finstrument_functions:
break;
case OPT_fpeel_loops:
+ flag_peel_loops_set = true;
flag_peel_loops = value;
break;
break;
case OPT_fprofile_arcs:
+ profile_arc_flag_set = true;
profile_arc_flag = value;
break;
+ case OPT_fprofile_use:
+ if (!flag_branch_probabilities_set)
+ flag_branch_probabilities = value;
+ if (!flag_profile_values_set)
+ flag_profile_values = value;
+ if (!flag_unroll_loops_set)
+ flag_unroll_loops = value;
+ if (!flag_peel_loops_set)
+ flag_peel_loops = value;
+ if (!flag_tracer_set)
+ flag_tracer = value;
+ if (!flag_value_profile_transformations_set)
+ flag_value_profile_transformations = value;
+ break;
+
+ case OPT_fprofile_generate:
+ if (!profile_arc_flag_set)
+ profile_arc_flag = value;
+ if (!flag_profile_values_set)
+ flag_profile_values = value;
+ if (!flag_value_profile_transformations_set)
+ flag_value_profile_transformations = value;
+ break;
+
+ case OPT_fprofile_values:
+ flag_profile_values_set = true;
+ flag_profile_values = value;
+ break;
+
+ case OPT_fvpt:
+ flag_value_profile_transformations_set = value;
+ flag_value_profile_transformations = value;
+ break;
+
case OPT_frandom_seed:
/* The real switch is -fno-random-seed. */
if (value)
flag_rerun_loop_opt = value;
break;
+ case OPT_frounding_math:
+ flag_rounding_math = value;
+ break;
+
case OPT_fsched_interblock:
- flag_schedule_interblock= value;
+ flag_schedule_interblock = value;
break;
case OPT_fsched_spec:
flag_schedule_insns_after_reload = value;
break;
- case OPT_fshared_data:
- flag_shared_data = value;
+ case OPT_fsched_stalled_insns:
+ flag_sched_stalled_insns = value;
break;
- case OPT_fsignaling_nans:
- flag_signaling_nans = value;
+ case OPT_fsched_stalled_insns_:
+ flag_sched_stalled_insns = value;
+ if (flag_sched_stalled_insns == 0)
+ flag_sched_stalled_insns = -1;
break;
- case OPT_fsingle_precision_constant:
- flag_single_precision_constant = value;
+ case OPT_fsched_stalled_insns_dep:
+ flag_sched_stalled_insns_dep = 1;
break;
- case OPT_fssa:
- flag_ssa = value;
+ case OPT_fsched_stalled_insns_dep_:
+ flag_sched_stalled_insns_dep = value;
break;
- case OPT_fssa_ccp:
- flag_ssa_ccp = value;
+ case OPT_fshared_data:
+ flag_shared_data = value;
+ break;
+
+ case OPT_fsignaling_nans:
+ flag_signaling_nans = value;
break;
- case OPT_fssa_dce:
- flag_ssa_dce = value;
+ case OPT_fsingle_precision_constant:
+ flag_single_precision_constant = value;
break;
case OPT_fstack_check:
break;
case OPT_ftracer:
+ flag_tracer_set = true;
flag_tracer = value;
break;
break;
case OPT_funroll_loops:
+ flag_unroll_loops_set = true;
flag_unroll_loops = value;
break;
flag_unwind_tables = value;
break;
+ case OPT_fvar_tracking:
+ flag_var_tracking = value;
+ break;
+
case OPT_fverbose_asm:
flag_verbose_asm = value;
break;
+
+ case OPT_fweb:
+ flag_web = value;
+ break;
case OPT_fwrapv:
flag_wrapv = value;
break;
case OPT_g:
- decode_g_option (arg);
+ set_debug_level (NO_DEBUG, DEFAULT_GDB_EXTENSIONS, arg);
+ break;
+
+ case OPT_gcoff:
+ set_debug_level (SDB_DEBUG, false, arg);
+ break;
+
+ case OPT_gdwarf_2:
+ set_debug_level (DWARF2_DEBUG, false, arg);
+ break;
+
+ case OPT_ggdb:
+ set_debug_level (NO_DEBUG, 2, arg);
+ break;
+
+ case OPT_gstabs:
+ case OPT_gstabs_:
+ set_debug_level (DBX_DEBUG, code == OPT_gstabs_, arg);
+ break;
+
+ case OPT_gvms:
+ set_debug_level (VMS_DEBUG, false, arg);
+ break;
+
+ case OPT_gxcoff:
+ case OPT_gxcoff_:
+ set_debug_level (XCOFF_DEBUG, code == OPT_gxcoff_, arg);
break;
case OPT_m:
flag_finite_math_only = set;
flag_errno_math = !set;
if (set)
- flag_signaling_nans = 0;
+ {
+ flag_signaling_nans = 0;
+ flag_rounding_math = 0;
+ }
}
/* Return true iff flags are set as if -ffast-math. */
&& !flag_errno_math);
}
+/* Handle a debug output -g switch. EXTENDED is true or false to support
+ extended output (2 is special and means "-ggdb" was given). */
+static void
+set_debug_level (enum debug_info_type type, int extended, const char *arg)
+{
+ static bool type_explicit;
+
+ use_gnu_debug_info_extensions = extended;
+
+ if (type == NO_DEBUG)
+ {
+ if (write_symbols == NO_DEBUG)
+ {
+ write_symbols = PREFERRED_DEBUGGING_TYPE;
+
+ if (extended == 2)
+ {
+#ifdef DWARF2_DEBUGGING_INFO
+ write_symbols = DWARF2_DEBUG;
+#elif defined DBX_DEBUGGING_INFO
+ write_symbols = DBX_DEBUG;
+#endif
+ }
+
+ if (write_symbols == NO_DEBUG)
+ warning ("target system does not support debug output");
+ }
+ }
+ else
+ {
+ /* Does it conflict with an already selected type? */
+ if (type_explicit && write_symbols != NO_DEBUG && type != write_symbols)
+ error ("debug format \"%s\" conflicts with prior selection",
+ debug_type_names[type]);
+ write_symbols = type;
+ type_explicit = true;
+ }
+
+ /* A debug flag without a level defaults to level 2. */
+ if (*arg == '\0')
+ {
+ if (!debug_info_level)
+ debug_info_level = 2;
+ }
+ else
+ {
+ debug_info_level = integral_argument (arg);
+ if (debug_info_level == (unsigned int) -1)
+ error ("unrecognised debug output level \"%s\"", arg);
+ else if (debug_info_level > 3)
+ error ("debug output level %s is too high", arg);
+ }
+}
+
/* Output --help text. */
static void
print_help (void)
print_filtered_help (1U << i);
}
- display_help ();
+ display_target_options ();
}
/* Print the help for --param. */
len = i;
else if ((help[i] == '-' || help[i] == '/')
&& help[i + 1] != ' '
- && ISALPHA (help[i - 1]))
+ && i > 0 && ISALPHA (help[i - 1]))
len = i + 1;
}
}
OSDN Git Service
