gcc/

	* doc/tm.texi.in (SWITCHABLE_TARGET): Document.
	* doc/tm.texi: Regenerate.
	* Makefile.in (OBJS-common): Add target-globals.o.
	(gtype-desc.o): Depend on $(IPA_PROP_H), $(LTO_STREAMER_H)
	and target-globals.h.
	(target-globals.o): New rule.
	(GTFILES): Include $(srcdir)/target-globals.h.
	* defaults.h (SWITCHABLE_TARGET): Define.
	* gengtype.c (open_base_files): Add target-globals.h to the
	list of includes.
	* target-globals.h: New file.
	* target-globals.c: Likewise.

	* Makefile.in (target-globals.o): Depend on $(FLAGS_H).
	* flags.h (target_flag_state): New structure.
	(default_target_flag_state): Declare.
	(this_target_flag_state): Declare as a variable or define as a macro.
	(align_loops_log): Redefine as a macro.
	(align_loops_max_skip, align_jumps_log): Likewise.
	(align_jumps_max_skip, align_labels_log): Likewise.
	(align_labels_max_skip, align_functions_log): Likewise.
	* toplev.c (default_target_flag_state): New variable.
	(this_target_flag_state): New conditional variable.
	(align_loops_log): Delete.
	(align_loops_max_skip, align_jumps_log): Likewise.
	(align_jumps_max_skip, align_labels_log): Likewise.
	(align_labels_max_skip, align_functions_log): Likewise.
	* target-globals.h (this_target_flag_state): Declare.
	(target_globals): Add a flag_state field.
	(restore_target_globals): Copy the flag_state field to
	this_target_flag_state.
	* target-globals.c: Include flags.h.
	(default_target_globals): Initialize the flag_state field.
	(save_target_globals): Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@162086 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 41 insertions, 0 deletions

diff --git a/gcc/target-globals.h b/gcc/target-globals.h
new file mode 100644
index 00000000000..496a50706c6
--- /dev/null
+++ b/gcc/target-globals.h
@@ -0,0 +1,41 @@
+/* Target-dependent globals.
+   Copyright (C) 2010  Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef TARGET_GLOBALS_H
+#define TARGET_GLOBALS_H 1
+
+#if SWITCHABLE_TARGET
+extern struct target_flag_state *this_target_flag_state;
+
+struct GTY(()) target_globals {
+  struct target_flag_state *GTY((skip)) flag_state;
+};
+
+extern struct target_globals default_target_globals;
+
+extern struct target_globals *save_target_globals (void);
+
+static inline void
+restore_target_globals (struct target_globals *g)
+{
+  this_target_flag_state = g->flag_state;
+}
+#endif
+
+#endif