/* 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 flag_unroll_loops_set, flag_tracer_set;
static bool flag_value_profile_transformations_set;
static bool flag_peel_loops_set, flag_branch_probabilities_set;
-static bool flag_loop_optimize_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,
unsigned int lang_mask);
static void handle_param (const char *);
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
- (cl_options_count) on failure.
-
- This routine is quite subtle. A normal binary search is not good
- enough because some options can be suffixed with an argument, and
- multiple sub-matches can occur, e.g. input of "-pedantic" matching
- the initial substring of "-pedantic-errors".
-
- A more complicated example is -gstabs. It should match "-g" with
- an argument of "stabs". Suppose, however, that the number and list
- of switches are such that the binary search tests "-gen-decls"
- before having tested "-g". This doesn't match, and as "-gen-decls"
- is less than "-gstabs", it will become the lower bound of the
- binary search range, and "-g" will never be seen. To resolve this
- issue, opts.sh makes "-gen-decls" point, via the back_chain member,
- to "-g" so that failed searches that end between "-gen-decls" and
- the lexicographically subsequent switch know to go back and see if
- "-g" causes a match (which it does in this example).
-
- This search is done in such a way that the longest match for the
- front end in question wins. If there is no match for the current
- front end, the longest match for a different front end is returned
- (or N_OPTS if none) and the caller emits an error message. */
-static size_t
-find_opt (const char *input, int lang_mask)
-{
- size_t mn, mx, md, opt_len;
- size_t match_wrong_lang;
- int comp;
-
- mn = 0;
- mx = cl_options_count;
-
- /* Find mn such this lexicographical inequality holds:
- cl_options[mn] <= input < cl_options[mn + 1]. */
- while (mx - mn > 1)
- {
- md = (mn + mx) / 2;
- opt_len = cl_options[md].opt_len;
- comp = strncmp (input, cl_options[md].opt_text + 1, opt_len);
-
- if (comp < 0)
- mx = md;
- else
- mn = md;
- }
-
- /* This is the switch that is the best match but for a different
- front end, or cl_options_count if there is no match at all. */
- match_wrong_lang = cl_options_count;
-
- /* Backtrace the chain of possible matches, returning the longest
- one, if any, that fits best. With current GCC switches, this
- loop executes at most twice. */
- do
- {
- const struct cl_option *opt = &cl_options[mn];
-
- /* Is the input either an exact match or a prefix that takes a
- joined argument? */
- if (!strncmp (input, opt->opt_text + 1, opt->opt_len)
- && (input[opt->opt_len] == '\0' || (opt->flags & CL_JOINED)))
- {
- /* If language is OK, return it. */
- if (opt->flags & lang_mask)
- return mn;
-
- /* If we haven't remembered a prior match, remember this
- one. Any prior match is necessarily better. */
- if (match_wrong_lang == cl_options_count)
- match_wrong_lang = mn;
- }
-
- /* Try the next possibility. This is cl_options_count if there
- are no more. */
- mn = opt->back_chain;
- }
- while (mn != cl_options_count);
-
- /* Return the best wrong match, or cl_options_count if none. */
- return match_wrong_lang;
-}
-
/* If ARG is a non-negative integer made up solely of digits, return its
value, otherwise return -1. */
static int
#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_tree_copy_prop = 1;
flag_tree_sink = 1;
flag_tree_salias = 1;
- flag_unit_at_a_time = 1;
+ if (!no_unit_at_a_time_default)
+ flag_unit_at_a_time = 1;
if (!optimize_size)
{
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_peephole2 = 1;
#ifdef INSN_SCHEDULING
option_index = find_opt (new_option, lang_mask);
if (option_index == N_OPTS)
{
- error("-Werror-%s: No option -%s", arg, new_option);
+ error ("-Werror-%s: No option -%s", arg, new_option);
}
else
{
&& cl_options[option_index].flag_var
&& kind == DK_ERROR)
*(int *) cl_options[option_index].flag_var = 1;
+ free (new_option);
}
}
break;
flag_branch_probabilities_set = true;
break;
- case OPT_floop_optimize:
- flag_loop_optimize_set = true;
- break;
-
case OPT_fcall_used_:
fix_register (arg, 0, 1);
break;
flag_tracer = value;
if (!flag_value_profile_transformations_set)
flag_value_profile_transformations = value;
- /* Old loop optimizer is incompatible with tree profiling. */
- if (!flag_loop_optimize_set)
- flag_loop_optimize = 0;
break;
case OPT_fprofile_generate:
warning (0, "-f[no-]force-mem is nop and option will be removed in 4.2");
break;
+ case OPT_floop_optimize:
+ case OPT_frerun_loop_opt:
+ case OPT_fstrength_reduce:
+ /* These are no-ops, preserved for backward compatibility. */
+ break;
+
default:
/* If the flag was handled in a standard way, assume the lack of
processing here is intentional. */
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