re PR lto/44143 (-fdump-tree-all for lto does not work as expected)

2010-05-18  Richard Guenther  <rguenther@suse.de>

	PR lto/44143
	* lto-wrapper.c (verbose): New variable.  Initialize from -v.
	(debug): Initialize from -save-temps.
	(collect_execute): Print command-line when verbose.
	(run_gcc): Always use COLLECT_GCC_OPTIONS.  Use fork_execute
	for ltrans invocation.  Produce -dumpbase flag again.
	(process_args): Remove.
	(main): Simplify.
	* collect2.c (maybe_run_lto_and_relink): Only pass object
	files to lto-wrapper.
	* gcc.c (LINK_COMMAND_SPEC): Likewise.

From-SVN: r159536

gcc/ChangeLog

+2010-05-18  Richard Guenther  <rguenther@suse.de>
+
+	PR lto/44143
+	* lto-wrapper.c (verbose): New variable.  Initialize from -v.
+	(debug): Initialize from -save-temps.
+	(collect_execute): Print command-line when verbose.
+	(run_gcc): Always use COLLECT_GCC_OPTIONS.  Use fork_execute
+	for ltrans invocation.  Produce -dumpbase flag again.
+	(process_args): Remove.
+	(main): Simplify.
+	* collect2.c (maybe_run_lto_and_relink): Only pass object
+	files to lto-wrapper.
+	* gcc.c (LINK_COMMAND_SPEC): Likewise.
+
 2010-05-18  Jan Hubicka  <jh@suse.cz>
 
 	* opts.c (decode_options): Do not disable whopr at ipa_cp.

gcc/collect2.c

@@ -940,10 +940,8 @@ maybe_run_lto_and_relink (char **lto_ld_argv, char **object_lst,
 
   if (lto_objects.first)
     {
-      const char *opts;
       char **lto_c_argv;
       const char **lto_c_ptr;
-      const char *cp;
       const char **p, **q, **r;
       const char **lto_o_ptr;
       struct lto_object *list;
@@ -954,52 +952,15 @@ maybe_run_lto_and_relink (char **lto_ld_argv, char **object_lst,
       if (!lto_wrapper)
 	fatal ("COLLECT_LTO_WRAPPER must be set.");
 
-      /* There is at least one object file containing LTO info,
-         so we need to run the LTO back end and relink.  */
-
-      /* Get compiler options passed down from the parent `gcc' command.
-         These must be passed to the LTO back end.  */
-      opts = getenv ("COLLECT_GCC_OPTIONS");
-
-      /* Increment the argument count by the number of inherited options.
-         Some arguments may be filtered out later.  Again, an upper bound
-         suffices.  */
-
-      cp = opts;
-
-      while (cp && *cp)
-        {
-          extract_string (&cp);
-          num_lto_c_args++;
-        }
-      obstack_free (&temporary_obstack, temporary_firstobj);
-
-      if (debug)
       num_lto_c_args++;
 
-      /* Increment the argument count by the number of initial
-	 arguments added below.  */
-      num_lto_c_args += 9;
+      /* There is at least one object file containing LTO info,
+         so we need to run the LTO back end and relink.  */
 
       lto_c_argv = (char **) xcalloc (sizeof (char *), num_lto_c_args);
       lto_c_ptr = CONST_CAST2 (const char **, char **, lto_c_argv);
 
       *lto_c_ptr++ = lto_wrapper;
-      *lto_c_ptr++ = c_file_name;
-
-      cp = opts;
-
-      while (cp && *cp)
-        {
-          const char *s = extract_string (&cp);
-
-	  /* Pass the option or argument to the wrapper.  */
-	  *lto_c_ptr++ = xstrdup (s);
-        }
-      obstack_free (&temporary_obstack, temporary_firstobj);
-
-      if (debug)
-	*lto_c_ptr++ = xstrdup ("-debug");
 
       /* Add LTO objects to the wrapper command line.  */
       for (list = lto_objects.first; list; list = list->next)

gcc/gcc.c

@@ -781,15 +781,9 @@ proper position among the other output files.  */
     %{fuse-linker-plugin: \
     -plugin %(linker_plugin_file) \
     -plugin-opt=%(lto_wrapper) \
-    -plugin-opt=%(lto_gcc) \
     -plugin-opt=-fresolution=%u.res \
     %{static|static-libgcc:-plugin-opt=-pass-through=%(lto_libgcc)}	\
     %{static:-plugin-opt=-pass-through=-lc}	\
-    %{O*:-plugin-opt=-O%*} \
-    %{w:-plugin-opt=-w} \
-    %{f*:-plugin-opt=-f%*} \
-    %{m*:-plugin-opt=-m%*} \
-    %{v:-plugin-opt=-v} \
     } \
     %{flto} %{fwhopr} %l " LINK_PIE_SPEC \
    "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\