Add file omitted from last checkin.

[pf3gnuchains/gcc-fork.git] / gcc / opts.c

diff --git a/gcc/opts.c b/gcc/opts.c
index 8b8a1a9..b03c5a7 100644 (file)
--- a/gcc/opts.c
+++ b/gcc/opts.c
@@ -365,6 +365,12 @@ 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;
 
+typedef const char *const_char_p; /* For DEF_VEC_P.  */
+DEF_VEC_P(const_char_p);
+DEF_VEC_ALLOC_P(const_char_p,heap);
+
+static VEC(const_char_p,heap) *ignored_options;
+
 /* Input file names.  */
 const char **in_fnames;
 unsigned num_in_fnames;
@@ -443,6 +449,33 @@ complain_wrong_lang (const char *text, const struct cl_option *option,
   free (bad_lang);
 }
 
+/* Buffer the unknown option described by the string OPT.  Currently,
+   we only complain about unknown -Wno-* options if they may have
+   prevented a diagnostic. Otherwise, we just ignore them.  */
+
+static void postpone_unknown_option_error(const char *opt)
+{
+  VEC_safe_push (const_char_p, heap, ignored_options, opt);
+}
+
+/* Produce an error for each option previously buffered.  */
+
+void print_ignored_options (void)
+{
+  location_t saved_loc = input_location;
+
+  input_location = 0;
+
+  while (!VEC_empty (const_char_p, ignored_options))
+    {
+      const char *opt;
+      opt = VEC_pop (const_char_p, ignored_options);
+      error ("unrecognized command line option \"%s\"", opt);
+    }
+
+  input_location = saved_loc;
+}
+
 /* Handle the switch beginning at ARGV for the language indicated by
    LANG_MASK.  Returns the number of switches consumed.  */
 static unsigned int
@@ -472,6 +505,14 @@ handle_option (const char **argv, unsigned int lang_mask)
       opt = dup;
       value = 0;
       opt_index = find_opt (opt + 1, lang_mask | CL_COMMON | CL_TARGET);
+      if (opt_index == cl_options_count && opt[1] == 'W')
+       {
+         /* We don't generate errors for unknown -Wno-* options
+             unless we issue diagnostics.  */
+         postpone_unknown_option_error (argv[0]);
+         result = 1;
+         goto done;
+       }
     }
 
   if (opt_index == cl_options_count)
@@ -807,7 +848,6 @@ decode_options (unsigned int argc, const char **argv)
       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;
 
@@ -846,6 +886,7 @@ decode_options (unsigned int argc, const char **argv)
       flag_reorder_functions = 1;
       flag_tree_store_ccp = 1;
       flag_tree_vrp = 1;
+      flag_tree_builtin_dce = 1;
 
       if (!optimize_size)
        {
@@ -1499,6 +1540,11 @@ common_handle_option (size_t scode, const char *arg, int value,
       break;
 
     case OPT_Wlarger_than_:
+      /* This form corresponds to -Wlarger-than-.  
+        Kept for backward compatibility. 
+        Don't use it as the first argument of warning().  */
+
+    case OPT_Wlarger_than_eq:
       larger_than_size = value;
       warn_larger_than = value != -1;
       break;
@@ -1670,6 +1716,15 @@ common_handle_option (size_t scode, const char *arg, int value,
       flag_inline_functions_set = true;
       break;
 
+    case OPT_fprofile_dir_:
+      profile_data_prefix = xstrdup (arg);
+      break;
+
+    case OPT_fprofile_use_:
+      profile_data_prefix = xstrdup (arg);
+      flag_profile_use = true;
+      value = true;
+      /* No break here - do -fprofile-use processing. */
     case OPT_fprofile_use:
       if (!flag_branch_probabilities_set)
         flag_branch_probabilities = value;
@@ -1687,6 +1742,10 @@ common_handle_option (size_t scode, const char *arg, int value,
         flag_inline_functions = value;
       break;
 
+    case OPT_fprofile_generate_:
+      profile_data_prefix = xstrdup (arg);
+      value = true;
+      /* No break here - do -fprofile-generate processing. */
     case OPT_fprofile_generate:
       if (!profile_arc_flag_set)
         profile_arc_flag = value;
@@ -1839,6 +1898,7 @@ common_handle_option (size_t scode, const char *arg, int value,
     case OPT_fstrength_reduce:
     case OPT_ftree_store_copy_prop:
     case OPT_fforce_addr:
+    case OPT_ftree_salias:
       /* These are no-ops, preserved for backward compatibility.  */
       break;
 
@@ -1923,6 +1983,8 @@ set_Wstrict_aliasing (int onoff)
   gcc_assert (onoff == 0 || onoff == 1);
   if (onoff != 0)
     warn_strict_aliasing = 3;
+  else
+    warn_strict_aliasing = 0;
 }
 
 /* The following routines are useful in setting all the flags that