opts.h (cl_option_state): New structure.

	* opts.h (cl_option_state): New structure.
	(get_option_state): Declare.
	* opts.c (get_option_state): New function.
	* toplev.c (option_affects_pch_p): New function.
	(default_get_pch_validity): Store the state of all options for which
	option_affects_pch_p returns true.
	(default_pch_valid_p): Check the state of those options here.
	Only check target_flags separately if targetm.check_pch_target_Flags
	is nonnull or if TARGET_SWITCHES is defined.

From-SVN: r100430

1 files changed, 34 insertions, 0 deletions

diff --git a/gcc/opts.c b/gcc/opts.c
index 44ed37b..6e73561 100644
--- a/gcc/opts.c
+++ b/gcc/opts.c
@@ -1442,3 +1442,37 @@ option_enabled (int opt_idx)
       }
   return -1;
 }
+
+/* Fill STATE with the current state of option OPTION.  Return true if
+   there is some state to store.  */
+
+bool
+get_option_state (int option, struct cl_option_state *state)
+{
+  if (cl_options[option].flag_var == 0)
+    return false;
+
+  switch (cl_options[option].var_type)
+    {
+    case CLVC_BOOLEAN:
+    case CLVC_EQUAL:
+      state->data = cl_options[option].flag_var;
+      state->size = sizeof (int);
+      break;
+
+    case CLVC_BIT_CLEAR:
+    case CLVC_BIT_SET:
+      state->ch = option_enabled (option);
+      state->data = &state->ch;
+      state->size = 1;
+      break;
+
+    case CLVC_STRING:
+      state->data = *(const char **) cl_options[option].flag_var;
+      if (state->data == 0)
+	state->data = "";
+      state->size = strlen (state->data) + 1;
+      break;
+    }
+  return true;
+}