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[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [hooks.c] - Blame information for rev 867

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/* General-purpose hooks.
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   Copyright (C) 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
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   This program is free software; you can redistribute it and/or modify it
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   under the terms of the GNU General Public License as published by the
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   Free Software Foundation; either version 3, or (at your option) any
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   later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program; see the file COPYING3.  If not see
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   <http://www.gnu.org/licenses/>.
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   In other words, you are welcome to use, share and improve this program.
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   You are forbidden to forbid anyone else to use, share and improve
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   what you give them.   Help stamp out software-hoarding!  */
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/* This file contains generic hooks that can be used as defaults for
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   target or language-dependent hook initializers.  */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "tm.h"
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#include "hooks.h"
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/* Generic hook that does absolutely zappo.  */
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void
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hook_void_void (void)
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{
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}
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/* Generic hook that takes no arguments and returns false.  */
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bool
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hook_bool_void_false (void)
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{
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  return false;
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}
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/* Generic hook that takes no arguments and returns true.  */
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bool
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hook_bool_void_true (void)
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{
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  return true;
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}
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/* Generic hook that takes no arguments and returns NO_REGS.  */
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int
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hook_int_void_no_regs (void)
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{
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  return NO_REGS;
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}
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/* Generic hook that takes (bool) and returns false.  */
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bool
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hook_bool_bool_false (bool a ATTRIBUTE_UNUSED)
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{
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  return false;
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}
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/* Generic hook that takes (enum machine_mode) and returns false.  */
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bool
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hook_bool_mode_false (enum machine_mode mode ATTRIBUTE_UNUSED)
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{
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  return false;
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}
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/* Generic hook that takes (enum machine_mode, rtx) and returns false.  */
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bool
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hook_bool_mode_rtx_false (enum machine_mode mode ATTRIBUTE_UNUSED,
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                          rtx value ATTRIBUTE_UNUSED)
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{
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  return false;
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}
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/* Generic hook that takes (enum machine_mode, rtx) and returns true.  */
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bool
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hook_bool_mode_rtx_true (enum machine_mode mode ATTRIBUTE_UNUSED,
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                         rtx value ATTRIBUTE_UNUSED)
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{
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  return true;
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}
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/* Generic hook that takes (FILE *, const char *) and does nothing.  */
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void
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hook_void_FILEptr_constcharptr (FILE *a ATTRIBUTE_UNUSED, const char *b ATTRIBUTE_UNUSED)
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{
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}
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/* Used for the TARGET_ASM_CAN_OUTPUT_MI_THUNK hook.  */
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bool
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hook_bool_tree_hwi_hwi_tree_false (tree a ATTRIBUTE_UNUSED,
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                                   HOST_WIDE_INT b ATTRIBUTE_UNUSED,
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                                   HOST_WIDE_INT c ATTRIBUTE_UNUSED,
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                                   tree d ATTRIBUTE_UNUSED)
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{
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  return false;
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}
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bool
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hook_bool_tree_hwi_hwi_tree_true (tree a ATTRIBUTE_UNUSED,
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                                  HOST_WIDE_INT b ATTRIBUTE_UNUSED,
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                                  HOST_WIDE_INT c ATTRIBUTE_UNUSED,
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                                  tree d ATTRIBUTE_UNUSED)
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{
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  return true;
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}
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bool
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hook_bool_constcharptr_size_t_false (const char *a ATTRIBUTE_UNUSED,
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                                     size_t b ATTRIBUTE_UNUSED)
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{
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  return false;
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}
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bool
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hook_bool_size_t_constcharptr_int_true (size_t a ATTRIBUTE_UNUSED,
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                                        const char *b ATTRIBUTE_UNUSED,
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                                        int c ATTRIBUTE_UNUSED)
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{
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  return true;
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}
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bool
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default_can_output_mi_thunk_no_vcall (tree a ATTRIBUTE_UNUSED,
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                                      HOST_WIDE_INT b ATTRIBUTE_UNUSED,
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                                      HOST_WIDE_INT c,
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                                      tree d ATTRIBUTE_UNUSED)
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{
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  return c == 0;
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}
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int
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hook_int_tree_0 (tree a ATTRIBUTE_UNUSED)
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{
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  return 0;
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}
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/* ??? Used for comp_type_attributes, which ought to return bool.  */
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int
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hook_int_tree_tree_1 (tree a ATTRIBUTE_UNUSED, tree b ATTRIBUTE_UNUSED)
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{
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  return 1;
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}
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int
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hook_int_rtx_0 (rtx a ATTRIBUTE_UNUSED)
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{
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  return 0;
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}
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int
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hook_int_size_t_constcharptr_int_0 (size_t a ATTRIBUTE_UNUSED,
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                                    const char *b ATTRIBUTE_UNUSED,
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                                    int c ATTRIBUTE_UNUSED)
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{
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  return 0;
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}
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unsigned int
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hook_uint_uint_constcharptrptr_0 (unsigned int a ATTRIBUTE_UNUSED,
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                                  const char **b ATTRIBUTE_UNUSED)
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{
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  return 0;
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}
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void
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hook_void_tree (tree a ATTRIBUTE_UNUSED)
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{
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}
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void
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hook_void_constcharptr (const char *a ATTRIBUTE_UNUSED)
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{
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}
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void
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hook_void_tree_treeptr (tree a ATTRIBUTE_UNUSED, tree *b ATTRIBUTE_UNUSED)
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{
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}
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bool
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hook_bool_tree_false (tree a ATTRIBUTE_UNUSED)
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{
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  return false;
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}
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bool
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hook_bool_tree_true (tree a ATTRIBUTE_UNUSED)
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{
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  return true;
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}
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bool
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hook_bool_tree_tree_false (tree a ATTRIBUTE_UNUSED, tree b ATTRIBUTE_UNUSED)
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{
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  return false;
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}
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bool
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hook_bool_tree_bool_false (tree a ATTRIBUTE_UNUSED, bool b ATTRIBUTE_UNUSED)
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{
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  return false;
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}
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bool
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hook_bool_rtx_false (rtx a ATTRIBUTE_UNUSED)
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{
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  return false;
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}
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bool
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hook_bool_uintp_uintp_false (unsigned int *a ATTRIBUTE_UNUSED,
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                             unsigned int *b ATTRIBUTE_UNUSED)
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{
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  return false;
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}
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bool
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hook_bool_rtx_int_int_intp_false (rtx a ATTRIBUTE_UNUSED,
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                                  int b ATTRIBUTE_UNUSED,
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                                  int c ATTRIBUTE_UNUSED,
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                                  int *d ATTRIBUTE_UNUSED)
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{
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  return false;
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}
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/* Generic hook that takes an rtx and returns it.  */
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rtx
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hook_rtx_rtx_identity (rtx x)
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{
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  return x;
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}
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/* Generic hook that takes an rtx and returns NULL_RTX.  */
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rtx
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hook_rtx_rtx_null (rtx x ATTRIBUTE_UNUSED)
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{
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  return NULL;
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}
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/* Generic hook that takes a tree and an int and returns NULL_RTX.  */
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rtx
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hook_rtx_tree_int_null (tree a ATTRIBUTE_UNUSED, int b ATTRIBUTE_UNUSED)
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{
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  return NULL;
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}
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/* Generic hook that takes three trees and returns the last one as is.  */
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tree
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hook_tree_tree_tree_tree_3rd_identity (tree a ATTRIBUTE_UNUSED,
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                                       tree b ATTRIBUTE_UNUSED, tree c)
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{
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  return c;
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}
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/* Generic hook that takes a tree and returns a NULL string.  */
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const char *
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hook_constcharptr_tree_null (tree t ATTRIBUTE_UNUSED)
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{
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  return NULL;
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}
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tree
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hook_tree_tree_tree_bool_null (tree t0 ATTRIBUTE_UNUSED, tree t1 ATTRIBUTE_UNUSED,
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                               bool ignore ATTRIBUTE_UNUSED)
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{
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  return NULL;
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}
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tree
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hook_tree_tree_tree_null (tree t0 ATTRIBUTE_UNUSED, tree t1 ATTRIBUTE_UNUSED)
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{
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  return NULL;
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}
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/* Generic hook that takes a rtx and returns a NULL string.  */
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const char *
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hook_constcharptr_rtx_null (rtx r ATTRIBUTE_UNUSED)
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{
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  return NULL;
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}
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const char *
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hook_constcharptr_tree_tree_null (tree t0 ATTRIBUTE_UNUSED,
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                                  tree t1 ATTRIBUTE_UNUSED)
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{
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  return NULL;
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}
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const char *
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hook_constcharptr_int_tree_null (int i ATTRIBUTE_UNUSED,
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                                 tree t0 ATTRIBUTE_UNUSED)
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{
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  return NULL;
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}
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const char *
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hook_constcharptr_int_tree_tree_null (int i ATTRIBUTE_UNUSED,
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                                      tree t0 ATTRIBUTE_UNUSED,
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                                      tree t1 ATTRIBUTE_UNUSED)
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{
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  return NULL;
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}

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