cppfiles.c (stack_include_file): Don't optimize zero-length files.

	* cppfiles.c (stack_include_file): Don't optimize zero-length
	files.
	(read_include_file): NUL-terminate read files.
	* cpplex.c (handle_newline, skip_escaped_newlines,
	get_effective_char, skip_whitespace, parse_identifier,
	parse_identifier_slow, parse_number, parse_string,
	_cpp_lex_direct): Optimize for the fact that buffers are guaranteed
	NUL-terminated.
	* cpplib.c (destringize_and_run, cpp_define, handle_assertion):
	Be sure buffers are NUL terminated.
	* cppmacro.c (warn_of_redefinition): Kill compile warning.

	* c-common.c: Include tree-inline.h.
	(c_language): Move separate definitions here.
	(c_common_init_options, c_common_post_options): New.
	(c_common_lang_init): Rename c_common_init.
	* c-common.h (c_common_lang_init): Similarly.
	(c_common_init_options, c_common_post_options): New.
	* c-lang.c (c_post_options): Move body to c_common_post_options.
	(c_init_options): Use c_common_init_options.
	(c_init): Update.
	* langhooks.def: Rearrange.
	* langhooks.h: Rearrange, and improve comments.
	* toplev.c (do_compile): New function.
	(toplev_main): Use it.
	(lang_independent_f_options, parse_options_and_default_flags,
	process_options): Remove trailing periods.
	* Makefile.in: Update.
cp:	* decl2.c (c_language): Move to c-common.c.
	* lex.c (cxx_post_options, cxx_init_options): Use c-common.c
	functions.
	(cxx_init): Update.
objc:	* objc-act.c (objc_post_options, objc_init_options): Use c-common.c
	functions.
	(ojbc_init): Update.

From-SVN: r47362

1 files changed, 3 insertions, 22 deletions

diff --git a/gcc/c-lang.c b/gcc/c-lang.c
index 9f0fb28..a5c8662 100644
--- a/gcc/c-lang.c
+++ b/gcc/c-lang.c
@@ -88,32 +88,13 @@ static varray_type deferred_fns;
 static void
 c_post_options ()
 {
-  cpp_post_options (parse_in);
-
-  /* Use tree inlining if possible.  Function instrumentation is only
-     done in the RTL level, so we disable tree inlining.  */
-  if (! flag_instrument_function_entry_exit)
-    {
-      if (!flag_no_inline)
-	{
-	  flag_inline_trees = 1;
-	  flag_no_inline = 1;
-	}
-      if (flag_inline_functions)
-	{
-	  flag_inline_trees = 2;
-	  flag_inline_functions = 0;
-	}
-    }
+  c_common_post_options ();
 }
 
 static void
 c_init_options ()
 {
-  parse_in = cpp_create_reader (CLK_GNUC89);
-
-  /* Mark as "unspecified".  */
-  flag_bounds_check = -1;
+  c_common_init_options (clk_c);
 }
 
 static const char *
@@ -122,7 +103,7 @@ c_init (filename)
 {
   c_init_decl_processing ();
 
-  filename = c_common_lang_init (filename);
+  filename = c_common_init (filename);
 
   add_c_tree_codes ();