gcc/common/config/c6x/c6x-common.c

   1 /* TI C6X common hooks.
   2    Copyright (C) 2011  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 "diagnostic-core.h"
  24 #include "tm.h"
  25 #include "tm_p.h"
  26 #include "common/common-target.h"
  27 #include "common/common-target-def.h"
  28 #include "opts.h"
  29 #include "flags.h"
  30
  31 /* Implement overriding of the optimization options.  */
  32 static const struct default_options c6x_option_optimization_table[] =
  33   {
  34     { OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 },
  35     { OPT_LEVELS_1_PLUS, OPT_frename_registers, NULL, 1 },
  36     { OPT_LEVELS_ALL, OPT_freciprocal_math, NULL, 1 },
  37     { OPT_LEVELS_NONE, 0, NULL, 0 }
  38   };
  39
  40 /* Implement TARGET_EXCEPT_UNWIND_INFO.  */
  41
  42 static enum unwind_info_type
  43 c6x_except_unwind_info (struct gcc_options *opts ATTRIBUTE_UNUSED)
  44 {
  45   /* Honor the --enable-sjlj-exceptions configure switch.  */
  46 #ifdef CONFIG_SJLJ_EXCEPTIONS
  47   if (CONFIG_SJLJ_EXCEPTIONS)
  48     return UI_SJLJ;
  49 #endif
  50
  51   return UI_TARGET;
  52 }
  53
  54 #undef TARGET_DEFAULT_TARGET_FLAGS
  55 #define TARGET_DEFAULT_TARGET_FLAGS TARGET_DEFAULT
  56
  57 #undef TARGET_OPTION_OPTIMIZATION_TABLE
  58 #define TARGET_OPTION_OPTIMIZATION_TABLE c6x_option_optimization_table
  59
  60 #undef TARGET_EXCEPT_UNWIND_INFO
  61 #define TARGET_EXCEPT_UNWIND_INFO  c6x_except_unwind_info
  62
  63 struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;