gcc/common/config/mcore/mcore-common.cc

   1 /* Common hooks for Motorola MCore.
   2    Copyright (C) 1993-2024 Free Software Foundation, Inc.
   3
   4    This file is part of GCC.
   5
   6    GCC is free software; you can redistribute it and/or modify it
   7    under the terms of the GNU General Public License as published
   8    by the Free Software Foundation; either version 3, or (at your
   9    option) any later version.
  10
  11    GCC is distributed in the hope that it will be useful, but WITHOUT
  12    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  14    License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with GCC; see the file COPYING3.  If not see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include "config.h"
  21 #include "system.h"
  22 #include "coretypes.h"
  23 #include "tm.h"
  24 #include "common/common-target.h"
  25 #include "common/common-target-def.h"
  26
  27 /* What options are we going to default to specific settings when
  28    -O* happens; the user can subsequently override these settings.
  29
  30    Omitting the frame pointer is a very good idea on the MCore.
  31    Scheduling isn't worth anything on the current MCore implementation.  */
  32
  33 static const struct default_options mcore_option_optimization_table[] =
  34   {
  35     { OPT_LEVELS_1_PLUS, OPT_ffunction_cse, NULL, 0 },
  36     { OPT_LEVELS_ALL, OPT_fcaller_saves, NULL, 0 },
  37     { OPT_LEVELS_ALL, OPT_fschedule_insns, NULL, 0 },
  38     { OPT_LEVELS_ALL, OPT_fschedule_insns2, NULL, 0 },
  39     { OPT_LEVELS_SIZE, OPT_mhardlit, NULL, 0 },
  40     { OPT_LEVELS_NONE, 0, NULL, 0 }
  41   };
  42
  43 #undef  TARGET_DEFAULT_TARGET_FLAGS
  44 #define TARGET_DEFAULT_TARGET_FLAGS     TARGET_DEFAULT
  45
  46 #undef TARGET_OPTION_OPTIMIZATION_TABLE
  47 #define TARGET_OPTION_OPTIMIZATION_TABLE mcore_option_optimization_table
  48
  49 #undef TARGET_EXCEPT_UNWIND_INFO
  50 #define TARGET_EXCEPT_UNWIND_INFO sjlj_except_unwind_info
  51
  52 struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;