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;
#define MAX_LINE 75
/* Decoded options, and number of such options. */
-static struct cl_decoded_option *save_decoded_options;
-static unsigned int save_decoded_options_count;
+struct cl_decoded_option *save_decoded_options;
+unsigned int save_decoded_options_count;
/* Name of top-level original source file (what was input to cpp).
This comes from the #-command at the beginning of the actual input.
const char *main_input_filename;
+/* Pointer to base name in main_input_filename, with directories and a
+ single final extension removed, and the length of this base
+ name. */
+const char *main_input_basename;
+int main_input_baselength;
+
/* Used to enable -fvar-tracking, -fweb and -frename-registers according
to optimize in process_options (). */
#define AUTODETECT_VALUE 2
-/* Name to use as base of names for dump output files. */
-
-const char *dump_base_name;
-
-/* Directory used for dump output files. */
-
-const char *dump_dir_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;
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;
-
/* True if this is the lto front end. This is used to disable
gimple generation and lowering passes that are normally run on the
output of a front end. These passes must be bypassed for lto since
bool in_lto_p = false;
-/* Nonzero if we should write GIMPLE bytecode for link-time optimization. */
-
-int flag_generate_lto;
-
/* The FUNCTION_DECL for the function currently being compiled,
or 0 if between functions. */
tree current_function_decl;
/* -f flags. */
-/* 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 = 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 for excess precision. */
-
-enum excess_precision flag_excess_precision_cmdline = EXCESS_PRECISION_DEFAULT;
-
-/* 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;
the support provided depends on the backend. */
rtx stack_limit_rtx;
-/* Positive if we should track variables, negative if we should run
- the var-tracking pass only to discard debug annotations, zero if
- we're not to run it. 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;
-
-/* Positive if we should track variables at assignments, negative if
- we should run the var-tracking pass only to discard debug
- annotations. When flag_var_tracking_assignments ==
- AUTODETECT_VALUE it will be set according to flag_var_tracking. */
-int flag_var_tracking_assignments = AUTODETECT_VALUE;
-
-/* Nonzero if we should toggle flag_var_tracking_assignments after
- processing options and computing its default. */
-int flag_var_tracking_assignments_toggle = 0;
-
/* Type of stack check. */
enum stack_check_type flag_stack_check = NO_STACK_CHECK;
}
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 },
+ { OPTION, DEFAULT, MIN, MAX, HELP },
#include "params.def"
#undef DEFPARAM
- { NULL, 0, false, 0, 0, NULL }
+ { NULL, 0, 0, 0, NULL }
};
/* Output files for assembler code (real compiler output)
FILE *asm_out_file;
FILE *aux_info_file;
+FILE *stack_usage_file = NULL;
FILE *dump_file = NULL;
const char *dump_file_name;
#if GCC_VERSION < 3004
-/* The functions floor_log2 and exact_log2 are defined as inline
- functions in toplev.h if GCC_VERSION >= 3004. The definitions here
- are used for older versions of gcc. */
+/* The functions clz_hwi, ctz_hwi, ffs_hwi, floor_log2 and exact_log2
+ are defined as inline functions in toplev.h if GCC_VERSION >= 3004.
+ The definitions here are used for older versions of gcc. */
/* Given X, an unsigned number, return the largest int Y such that 2**Y <= X.
If X is 0, return -1. */
return floor_log2 (x);
}
+/* Given X, an unsigned number, return the number of least significant bits
+ that are zero. When X == 0, the result is the word size. */
+
+int
+ctz_hwi (unsigned HOST_WIDE_INT x)
+{
+ return x ? floor_log2 (x & -x) : HOST_BITS_PER_WIDE_INT;
+}
+
+/* Similarly for most significant bits. */
+
+int
+clz_hwi (unsigned HOST_WIDE_INT x)
+{
+ return HOST_BITS_PER_WIDE_INT - 1 - floor_log2(x);
+}
+
+/* Similar to ctz_hwi, except that the least significant bit is numbered
+ starting from 1, and X == 0 yields 0. */
+
+int
+ffs_hwi (unsigned HOST_WIDE_INT x)
+{
+ return 1 + floor_log2 (x & -x);
+}
+
#endif /* GCC_VERSION < 3004 */
/* Handler for fatal signals, such as SIGSEGV. These are transformed
/* Call the parser, which parses the entire file (calling
rest_of_compilation for each function). */
- lang_hooks.parse_file (set_yydebug);
+ lang_hooks.parse_file ();
/* Compilation is now finished except for writing
what's left of the symbol table output. */
if (seen_error ())
return;
- /* Ensure that emulated TLS control vars are finalized and build
- a static constructor for them, when it is required. */
- if (!targetm.have_tls)
- emutls_finish ();
-
varpool_assemble_pending_decls ();
finish_aliases_2 ();
case 'x':
rtl_dump_and_exit = 1;
break;
- case 'y':
- set_yydebug = 1;
- break;
case 'D': /* These are handled by the preprocessor. */
case 'I':
case 'M':
for (j = 0; j < cl_options_count; j++)
if ((cl_options[j].flags & CL_REPORT)
- && option_enabled (j) > 0)
+ && option_enabled (j, &global_options) > 0)
pos = print_single_switch (print_fn, pos,
SWITCH_TYPE_ENABLED, cl_options[j].opt_text);
{
if ((cl_options[option].flags & CL_TARGET) == 0)
return false;
- if (cl_options[option].flag_var == &target_flags)
+ if (option_flag_var (option, &global_options) == &target_flags)
if (targetm.check_pch_target_flags)
return false;
- return get_option_state (option, state);
+ return get_option_state (&global_options, option, state);
}
/* Default version of get_pch_validity.
return ggc_alloc_atomic (len);
}
+/* Output stack usage information. */
+void
+output_stack_usage (void)
+{
+ static bool warning_issued = false;
+ enum stack_usage_kind_type { STATIC = 0, DYNAMIC, DYNAMIC_BOUNDED };
+ const char *stack_usage_kind_str[] = {
+ "static",
+ "dynamic",
+ "dynamic,bounded"
+ };
+ HOST_WIDE_INT stack_usage = current_function_static_stack_size;
+ enum stack_usage_kind_type stack_usage_kind;
+ expanded_location loc;
+ const char *raw_id, *id;
+
+ if (stack_usage < 0)
+ {
+ if (!warning_issued)
+ {
+ warning (0, "-fstack-usage not supported for this target");
+ warning_issued = true;
+ }
+ return;
+ }
+
+ stack_usage_kind = STATIC;
+
+ /* Add the maximum amount of space pushed onto the stack. */
+ if (current_function_pushed_stack_size > 0)
+ {
+ stack_usage += current_function_pushed_stack_size;
+ stack_usage_kind = DYNAMIC_BOUNDED;
+ }
+
+ /* Now on to the tricky part: dynamic stack allocation. */
+ if (current_function_allocates_dynamic_stack_space)
+ {
+ if (current_function_has_unbounded_dynamic_stack_size)
+ stack_usage_kind = DYNAMIC;
+ else
+ stack_usage_kind = DYNAMIC_BOUNDED;
+
+ /* Add the size even in the unbounded case, this can't hurt. */
+ stack_usage += current_function_dynamic_stack_size;
+ }
+
+ loc = expand_location (DECL_SOURCE_LOCATION (current_function_decl));
+
+ /* Strip the scope prefix if any. */
+ raw_id = lang_hooks.decl_printable_name (current_function_decl, 2);
+ id = strrchr (raw_id, '.');
+ if (id)
+ id++;
+ else
+ id = raw_id;
+
+ fprintf (stack_usage_file,
+ "%s:%d:%d:%s\t"HOST_WIDE_INT_PRINT_DEC"\t%s\n",
+ lbasename (loc.file),
+ loc.line,
+ loc.column,
+ id,
+ stack_usage,
+ stack_usage_kind_str[stack_usage_kind]);
+}
+
+/* Open an auxiliary output file. */
+static FILE *
+open_auxiliary_file (const char *ext)
+{
+ char *filename;
+ FILE *file;
+
+ filename = concat (aux_base_name, ".", ext, NULL);
+ file = fopen (filename, "w");
+ if (!file)
+ fatal_error ("can%'t open %s for writing: %m", filename);
+ free (filename);
+ return file;
+}
+
/* Initialization of the front end environment, before command line
options are parsed. Signal handlers, internationalization etc.
ARGV0 is main's argv[0]. */
/* Set a default printer. Language specific initializations will
override it later. */
pp_format_decoder (global_dc->printer) = &default_tree_printer;
- global_dc->show_option_requested = flag_diagnostics_show_option;
- global_dc->show_column = flag_show_column;
+ global_dc->show_option_requested
+ = global_options_init.x_flag_diagnostics_show_option;
+ global_dc->show_column
+ = global_options_init.x_flag_show_column;
global_dc->internal_error = plugins_internal_error_function;
global_dc->option_enabled = option_enabled;
+ global_dc->option_state = &global_options;
global_dc->option_name = option_name;
/* Trap fatal signals, e.g. SIGSEGV, and convert them to ICE messages. */
/* Register the language-independent parameters. */
add_params (lang_independent_params, LAST_PARAM);
+ targetm.target_option.default_params ();
/* This must be done after add_params but before argument processing. */
init_ggc_heuristics();
init_optimization_passes ();
statistics_early_init ();
+ finish_params ();
}
/* Return true if the current target supports -fsection-anchors. */
if (flag_unroll_all_loops)
flag_unroll_loops = 1;
- /* The loop unrolling code assumes that cse will be run after loop.
- web and rename-registers also help when run after loop unrolling. */
- if (flag_rerun_cse_after_loop == AUTODETECT_VALUE)
- flag_rerun_cse_after_loop = flag_unroll_loops || flag_peel_loops;
-
+ /* web and rename-registers help when run after loop unrolling. */
if (flag_web == AUTODETECT_VALUE)
flag_web = flag_unroll_loops || flag_peel_loops;
flag_var_tracking_uninit = 0;
}
+ /* The debug hooks are used to implement -fdump-go-spec because it
+ gives a simple and stable API for all the information we need to
+ dump. */
+ if (flag_dump_go_spec != NULL)
+ debug_hooks = dump_go_spec_init (flag_dump_go_spec, debug_hooks);
+
/* If the user specifically requested variable tracking with tagging
uninitialized variables, we need to turn on variable tracking.
(We already determined above that variable tracking is feasible.) */
init_asm_output (name);
+ /* If stack usage information is desired, open the output file. */
+ if (flag_stack_usage)
+ stack_usage_file = open_auxiliary_file ("su");
+
/* This creates various _DECL nodes, so needs to be called after the
front end is initialized. */
init_eh ();
unlink_if_ordinary (asm_file_name);
}
+ if (stack_usage_file)
+ fclose (stack_usage_file);
+
statistics_fini ();
finish_optimization_passes ();
/* Initialization of GCC's environment, and diagnostics. */
general_init (argv[0]);
+ /* One-off initialization of options that does not need to be
+ repeated when options are added for particular functions. */
+ init_options_once ();
+
+ /* Initialize global options structures; this must be repeated for
+ each structure used for parsing options. */
+ init_options_struct (&global_options, &global_options_set);
+ lang_hooks.init_options_struct (&global_options);
+
+ /* Convert the options to an array. */
+ decode_cmdline_options_to_array_default_mask (argc,
+ CONST_CAST2 (const char **,
+ char **, argv),
+ &save_decoded_options,
+ &save_decoded_options_count);
+
+ /* Perform language-specific options initialization. */
+ lang_hooks.init_options (save_decoded_options_count, save_decoded_options);
+
/* Parse the options and do minimal processing; basically just
enough to default flags appropriately. */
- decode_options (argc, CONST_CAST2 (const char **, char **, argv),
- &save_decoded_options, &save_decoded_options_count);
+ decode_options (&global_options, &global_options_set,
+ save_decoded_options, save_decoded_options_count,
+ UNKNOWN_LOCATION, global_dc);
+
+ handle_common_deferred_options ();
init_local_tick ();
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