gcc/common/config/avr/avr-common.c

   1 /* Common hooks for ATMEL AVR.
   2    Copyright (C) 1998-2018 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
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3, or (at your option)
   9    any later version.
  10
  11    GCC is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public 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 /* Implement TARGET_OPTION_OPTIMIZATION_TABLE.  */
  28 static const struct default_options avr_option_optimization_table[] =
  29   {
  30     // The only effect of -fcaller-saves might be that it triggers
  31     // a frame without need when it tries to be smart around calls.
  32     { OPT_LEVELS_ALL, OPT_fcaller_saves, NULL, 0 },
  33     { OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_mgas_isr_prologues, NULL, 1 },
  34     { OPT_LEVELS_NONE, 0, NULL, 0 }
  35   };
  36
  37 #undef TARGET_OPTION_OPTIMIZATION_TABLE
  38 #define TARGET_OPTION_OPTIMIZATION_TABLE avr_option_optimization_table
  39
  40 #undef TARGET_EXCEPT_UNWIND_INFO
  41 #define TARGET_EXCEPT_UNWIND_INFO sjlj_except_unwind_info
  42
  43 struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;