diff options
Diffstat (limited to 'contrib/gcc/opts.c')
| -rw-r--r-- | contrib/gcc/opts.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/contrib/gcc/opts.c b/contrib/gcc/opts.c index 1ded3c711b74..87f8984a1a9b 100644 --- a/contrib/gcc/opts.c +++ b/contrib/gcc/opts.c @@ -59,6 +59,11 @@ bool extra_warnings; bool warn_larger_than; HOST_WIDE_INT larger_than_size; +/* True to warn about any function whose frame size is larger + * than N bytes. */ +bool warn_frame_larger_than; +HOST_WIDE_INT frame_larger_than_size; + /* Nonzero means warn about constructs which might not be strict-aliasing safe. */ int warn_strict_aliasing; @@ -358,6 +363,15 @@ 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; +/* Functions excluded from profiling. */ + +typedef char *char_p; /* For DEF_VEC_P. */ +DEF_VEC_P(char_p); +DEF_VEC_ALLOC_P(char_p,heap); + +static VEC(char_p,heap) *flag_instrument_functions_exclude_functions; +static VEC(char_p,heap) *flag_instrument_functions_exclude_files; + /* Input file names. */ const char **in_fnames; unsigned num_in_fnames; @@ -604,6 +618,87 @@ add_input_filename (const char *filename) in_fnames[num_in_fnames - 1] = filename; } +/* Add functions or file names to a vector of names to exclude from + instrumentation. */ + +static void +add_instrument_functions_exclude_list (VEC(char_p,heap) **pvec, + const char* arg) +{ + char *tmp; + char *r; + char *w; + char *token_start; + + /* We never free this string. */ + tmp = xstrdup (arg); + + r = tmp; + w = tmp; + token_start = tmp; + + while (*r != '\0') + { + if (*r == ',') + { + *w++ = '\0'; + ++r; + VEC_safe_push (char_p, heap, *pvec, token_start); + token_start = w; + } + if (*r == '\\' && r[1] == ',') + { + *w++ = ','; + r += 2; + } + else + *w++ = *r++; + } + if (*token_start != '\0') + VEC_safe_push (char_p, heap, *pvec, token_start); +} + +/* Return whether we should exclude FNDECL from instrumentation. */ + +bool +flag_instrument_functions_exclude_p (tree fndecl) +{ + if (VEC_length (char_p, flag_instrument_functions_exclude_functions) > 0) + { + const char *name; + int i; + char *s; + + name = lang_hooks.decl_printable_name (fndecl, 0); + for (i = 0; + VEC_iterate (char_p, flag_instrument_functions_exclude_functions, + i, s); + ++i) + { + if (strstr (name, s) != NULL) + return true; + } + } + + if (VEC_length (char_p, flag_instrument_functions_exclude_files) > 0) + { + const char *name; + int i; + char *s; + + name = DECL_SOURCE_FILE (fndecl); + for (i = 0; + VEC_iterate (char_p, flag_instrument_functions_exclude_files, i, s); + ++i) + { + if (strstr (name, s) != NULL) + return true; + } + } + + return false; +} + /* Decode and handle the vector of command line options. LANG_MASK contains has a single bit set representing the current language. */ @@ -979,7 +1074,15 @@ common_handle_option (size_t scode, const char *arg, int value, warn_larger_than = value != -1; break; + case OPT_Wframe_larger_than_: + frame_larger_than_size = value; + warn_frame_larger_than = value != -1; + break; + case OPT_Wstrict_aliasing: + set_warn_strict_aliasing (value); + break; + case OPT_Wstrict_aliasing_: warn_strict_aliasing = value; break; @@ -1086,6 +1189,16 @@ common_handle_option (size_t scode, const char *arg, int value, set_param_value ("max-inline-insns-auto", value / 2); break; + case OPT_finstrument_functions_exclude_function_list_: + add_instrument_functions_exclude_list + (&flag_instrument_functions_exclude_functions, arg); + break; + + case OPT_finstrument_functions_exclude_file_list_: + add_instrument_functions_exclude_list + (&flag_instrument_functions_exclude_files, arg); + break; + case OPT_fmessage_length_: pp_set_line_maximum_length (global_dc->printer, value); break; @@ -1348,6 +1461,20 @@ set_Wunused (int setting) warn_unused_value = setting; } +/* Used to set the level of strict aliasing warnings, + when no level is specified (i.e., when -Wstrict-aliasing, and not + -Wstrict-aliasing=level was given). + ONOFF is assumed to take value 1 when -Wstrict-aliasing is specified, + and 0 otherwise. After calling this function, wstrict_aliasing will be + set to the default value of -Wstrict_aliasing=level, currently 3. */ +void +set_warn_strict_aliasing (int onoff) +{ + gcc_assert (onoff == 0 || onoff == 1); + if (onoff != 0) + warn_strict_aliasing = 3; +} + /* The following routines are useful in setting all the flags that -ffast-math and -fno-fast-math imply. */ void |