gcc/

	* Makefile.in (gcse.o, target-globals.o): Depend on gcse.h..
	* gcse.h: New file.
	* gcse.c: Include gcse.h.
	(default_target_gcse): New variable.
	(this_target_gcse): New conditional variable.
	(can_copy): Redefine as a macro.
	(can_copy_init_p): New macro.
	(can_copy_p): Remove can_copy_init_p.
	* target-globals.h (this_target_gcse): Declare.
	(target_globals): Add a gcse field.
	(restore_target_globals): Copy the gcse field to
	this_target_gcse.
	* target-globals.c: Include gcse.h.
	(default_target_globals): Initialize the gcse field.
	(save_target_globals): Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@162108 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 43 insertions, 0 deletions

diff --git a/gcc/gcse.h b/gcc/gcse.h
new file mode 100644
index 00000000000..b4ed7f22fa1
--- /dev/null
+++ b/gcc/gcse.h
@@ -0,0 +1,43 @@
+/* Global common subexpression elimination/Partial redundancy elimination
+   and global constant/copy propagation for GNU compiler.
+   Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
+   2006, 2007, 2008, 2009, 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 GCC_GCSE_H
+#define GCC_GCSE_H
+
+/* Target-dependent globals.  */
+struct target_gcse {
+  /* Nonzero for each mode that supports (set (reg) (reg)).
+     This is trivially true for integer and floating point values.
+     It may or may not be true for condition codes.  */
+  char x_can_copy[(int) NUM_MACHINE_MODES];
+
+  /* True if the previous field has been initialized.  */
+  bool x_can_copy_init_p;
+};
+
+extern GTY(()) struct target_gcse default_target_gcse;
+#if SWITCHABLE_TARGET
+extern struct target_gcse *this_target_gcse;
+#else
+#define this_target_gcse (&default_target_gcse)
+#endif
+
+#endif