Add gcc-4.6. Synced to @180989

Change-Id: Ie3676586e1d8e3c8cd9f07d022f450d05fa08439
svn://gcc.gnu.org/svn/gcc/branches/google/gcc-4_6-mobile

1 files changed, 384 insertions, 0 deletions

diff --git a/gcc-4.6/gcc/hooks.c b/gcc-4.6/gcc/hooks.c
new file mode 100644
index 000000000..15abd8552
--- /dev/null
+++ b/gcc-4.6/gcc/hooks.c
@@ -0,0 +1,384 @@
+/* General-purpose hooks.
+   Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010
+   Free Software Foundation, Inc.
+
+   This program 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.
+
+   This program 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 this program; see the file COPYING3.  If not see
+   <http://www.gnu.org/licenses/>.
+
+   In other words, you are welcome to use, share and improve this program.
+   You are forbidden to forbid anyone else to use, share and improve
+   what you give them.   Help stamp out software-hoarding!  */
+
+/* This file contains generic hooks that can be used as defaults for
+   target or language-dependent hook initializers.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "hooks.h"
+
+/* Generic hook that does absolutely zappo.  */
+void
+hook_void_void (void)
+{
+}
+
+/* Generic hook that takes no arguments and returns false.  */
+bool
+hook_bool_void_false (void)
+{
+  return false;
+}
+
+/* Generic hook that takes no arguments and returns true.  */
+bool
+hook_bool_void_true (void)
+{
+  return true;
+}
+
+/* Generic hook that takes (bool) and returns false.  */
+bool
+hook_bool_bool_false (bool a ATTRIBUTE_UNUSED)
+{
+  return false;
+}
+
+/* Generic hook that takes (bool, struct gcc_options *) and returns false.  */
+bool
+hook_bool_bool_gcc_optionsp_false (bool a ATTRIBUTE_UNUSED,
+				   struct gcc_options *opts ATTRIBUTE_UNUSED)
+{
+  return false;
+}
+
+/* Generic hook that takes const int, const int) and returns true.  */
+bool hook_bool_const_int_const_int_true (const int a ATTRIBUTE_UNUSED,
+                                         const int b ATTRIBUTE_UNUSED)
+{
+  return true;
+}
+
+/* Generic hook that takes (enum machine_mode) and returns false.  */
+bool
+hook_bool_mode_false (enum machine_mode mode ATTRIBUTE_UNUSED)
+{
+  return false;
+}
+
+/* Generic hook that takes (enum machine_mode) and returns true.  */
+bool
+hook_bool_mode_true (enum machine_mode mode ATTRIBUTE_UNUSED)
+{
+  return true;
+}
+
+/* Generic hook that takes (enum machine_mode, rtx) and returns false.  */
+bool
+hook_bool_mode_const_rtx_false (enum machine_mode mode ATTRIBUTE_UNUSED,
+				const_rtx value ATTRIBUTE_UNUSED)
+{
+  return false;
+}
+
+/* Generic hook that takes (enum machine_mode, rtx) and returns true.  */
+bool
+hook_bool_mode_const_rtx_true (enum machine_mode mode ATTRIBUTE_UNUSED,
+			       const_rtx value ATTRIBUTE_UNUSED)
+{
+  return true;
+}
+
+/* Generic hook that takes (FILE *, const char *) and does nothing.  */
+void
+hook_void_FILEptr_constcharptr (FILE *a ATTRIBUTE_UNUSED, const char *b ATTRIBUTE_UNUSED)
+{
+}
+
+/* Used for the TARGET_ASM_CAN_OUTPUT_MI_THUNK hook.  */
+bool
+hook_bool_const_tree_hwi_hwi_const_tree_false (const_tree a ATTRIBUTE_UNUSED,
+					       HOST_WIDE_INT b ATTRIBUTE_UNUSED,
+					       HOST_WIDE_INT c ATTRIBUTE_UNUSED,
+					       const_tree d ATTRIBUTE_UNUSED)
+{
+  return false;
+}
+
+bool
+hook_bool_const_tree_hwi_hwi_const_tree_true (const_tree a ATTRIBUTE_UNUSED,
+					      HOST_WIDE_INT b ATTRIBUTE_UNUSED,
+					      HOST_WIDE_INT c ATTRIBUTE_UNUSED,
+					      const_tree d ATTRIBUTE_UNUSED)
+{
+  return true;
+}
+
+bool
+hook_bool_size_t_constcharptr_int_true (size_t a ATTRIBUTE_UNUSED,
+					const char *b ATTRIBUTE_UNUSED,
+					int c ATTRIBUTE_UNUSED)
+{
+  return true;
+}
+
+bool
+default_can_output_mi_thunk_no_vcall (const_tree a ATTRIBUTE_UNUSED,
+				      HOST_WIDE_INT b ATTRIBUTE_UNUSED,
+				      HOST_WIDE_INT c,
+				      const_tree d ATTRIBUTE_UNUSED)
+{
+  return c == 0;
+}
+
+int
+hook_int_const_tree_0 (const_tree a ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+/* ??? Used for comp_type_attributes, which ought to return bool.  */
+int
+hook_int_const_tree_const_tree_1 (const_tree a ATTRIBUTE_UNUSED, const_tree b ATTRIBUTE_UNUSED)
+{
+  return 1;
+}
+
+int
+hook_int_rtx_0 (rtx a ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+int
+hook_int_rtx_bool_0 (rtx a ATTRIBUTE_UNUSED, bool b ATTRIBUTE_UNUSED)
+{
+  return 0;
+}
+
+unsigned int
+hook_uint_void_0 (void)
+{
+  return 0;
+}
+
+void
+hook_void_tree (tree a ATTRIBUTE_UNUSED)
+{
+}
+
+void
+hook_void_constcharptr (const char *a ATTRIBUTE_UNUSED)
+{
+}
+
+void
+hook_void_tree_treeptr (tree a ATTRIBUTE_UNUSED, tree *b ATTRIBUTE_UNUSED)
+{
+}
+
+void
+hook_void_int_int (int a ATTRIBUTE_UNUSED, int b ATTRIBUTE_UNUSED)
+{
+}
+
+bool
+hook_bool_tree_false (tree a ATTRIBUTE_UNUSED)
+{
+  return false;
+}
+
+bool
+hook_bool_const_tree_false (const_tree a ATTRIBUTE_UNUSED)
+{
+  return false;
+}
+
+bool
+hook_bool_tree_true (tree a ATTRIBUTE_UNUSED)
+{
+  return true;
+}
+
+bool
+hook_bool_const_tree_true (const_tree a ATTRIBUTE_UNUSED)
+{
+  return true;
+}
+
+bool
+hook_bool_tree_tree_false (tree a ATTRIBUTE_UNUSED, tree b ATTRIBUTE_UNUSED)
+{
+  return false;
+}
+
+bool
+hook_bool_tree_tree_true (tree a ATTRIBUTE_UNUSED, tree b ATTRIBUTE_UNUSED)
+{
+  return true;
+}
+
+bool
+hook_bool_tree_bool_false (tree a ATTRIBUTE_UNUSED, bool b ATTRIBUTE_UNUSED)
+{
+  return false;
+}
+
+bool
+hook_bool_rtx_false (rtx a ATTRIBUTE_UNUSED)
+{
+  return false;
+}
+
+bool
+hook_bool_uintp_uintp_false (unsigned int *a ATTRIBUTE_UNUSED,
+			     unsigned int *b ATTRIBUTE_UNUSED)
+{
+  return false;
+}
+
+bool
+hook_bool_rtx_int_int_intp_bool_false (rtx a ATTRIBUTE_UNUSED,
+				       int b ATTRIBUTE_UNUSED,
+				       int c ATTRIBUTE_UNUSED,
+				       int *d ATTRIBUTE_UNUSED,
+				       bool speed_p ATTRIBUTE_UNUSED)
+{
+  return false;
+}
+
+/* Generic hook that takes an rtx and returns it.  */
+rtx
+hook_rtx_rtx_identity (rtx x)
+{
+  return x;
+}
+
+/* Generic hook that takes an rtx and returns NULL_RTX.  */
+rtx
+hook_rtx_rtx_null (rtx x ATTRIBUTE_UNUSED)
+{
+  return NULL;
+}
+
+/* Generic hook that takes a tree and an int and returns NULL_RTX.  */
+rtx
+hook_rtx_tree_int_null (tree a ATTRIBUTE_UNUSED, int b ATTRIBUTE_UNUSED)
+{
+  return NULL;
+}
+
+/* Generic hook that returns NULL_RTX. */
+rtx
+hook_rtx_void_null (void)
+{
+  return NULL;
+}
+
+/* Generic hook that takes three trees and returns the last one as is.  */
+tree
+hook_tree_tree_tree_tree_3rd_identity (tree a ATTRIBUTE_UNUSED,
+				       tree b ATTRIBUTE_UNUSED, tree c)
+{
+  return c;
+}
+
+/* Generic hook that takes a tree and returns a NULL string.  */
+const char *
+hook_constcharptr_const_tree_null (const_tree t ATTRIBUTE_UNUSED)
+{
+  return NULL;
+}
+
+tree
+hook_tree_tree_int_treep_bool_null (tree t0 ATTRIBUTE_UNUSED,
+				    int i ATTRIBUTE_UNUSED,
+				    tree *p ATTRIBUTE_UNUSED,
+				    bool ignore ATTRIBUTE_UNUSED)
+{
+  return NULL;
+}
+
+tree
+hook_tree_tree_tree_null (tree t0 ATTRIBUTE_UNUSED, tree t1 ATTRIBUTE_UNUSED)
+{
+  return NULL;
+}
+
+tree
+hook_tree_tree_tree_tree_null (tree t0 ATTRIBUTE_UNUSED,
+			       tree t1 ATTRIBUTE_UNUSED,
+			       tree t2 ATTRIBUTE_UNUSED)
+{
+  return NULL;
+}
+
+/* Generic hook that takes a rtx and returns a NULL string.  */
+const char *
+hook_constcharptr_const_rtx_null (const_rtx r ATTRIBUTE_UNUSED)
+{
+  return NULL;
+}
+
+const char *
+hook_constcharptr_const_tree_const_tree_null (const_tree t0 ATTRIBUTE_UNUSED,
+					      const_tree t1 ATTRIBUTE_UNUSED)
+{
+  return NULL;
+}
+
+const char *
+hook_constcharptr_int_const_tree_null (int i ATTRIBUTE_UNUSED,
+				       const_tree t0 ATTRIBUTE_UNUSED)
+{
+  return NULL;
+}
+
+const char *
+hook_constcharptr_int_const_tree_const_tree_null (int i ATTRIBUTE_UNUSED,
+						  const_tree t0 ATTRIBUTE_UNUSED,
+						  const_tree t1 ATTRIBUTE_UNUSED)
+{
+  return NULL;
+}
+
+/* Generic hook that takes a const_tree and returns NULL_TREE.  */
+tree
+hook_tree_const_tree_null (const_tree t ATTRIBUTE_UNUSED)
+{
+  return NULL;
+}
+
+/* Generic hook that takes a rtx and an int and returns a bool.  */
+
+bool
+hook_bool_rtx_int_false (rtx insn ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED)
+{
+  return false;
+}
+
+/* Generic hook that takes a rtx and an int and returns void.  */
+
+void
+hook_void_rtx_int (rtx insn ATTRIBUTE_UNUSED, int mode ATTRIBUTE_UNUSED)
+{
+}
+
+/* Generic hook that takes a struct gcc_options * and returns void.  */
+
+void
+hook_void_gcc_optionsp (struct gcc_options *opts ATTRIBUTE_UNUSED)
+{
+}