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/* Common hooks for DEC Alpha.

   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,

   2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011

   Free Software Foundation, Inc.

This file is part of GCC.

GCC 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.

GCC 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 GCC; see the file COPYING3.  If not see

<http://www.gnu.org/licenses/>.  */

#include "config.h"

#include "system.h"

#include "coretypes.h"

#include "diagnostic-core.h"

#include "tm.h"

#include "common/common-target.h"

#include "common/common-target-def.h"

#include "opts.h"

#include "flags.h"

/* Implement TARGET_OPTION_OPTIMIZATION_TABLE.  */

static const struct default_options alpha_option_optimization_table[] =

  {

    { OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 },

    /* Enable redundant extension instructions removal at -O2 and higher.  */

    { OPT_LEVELS_2_PLUS, OPT_free, NULL, 1 },

    { OPT_LEVELS_NONE, 0, NULL, 0 }

  };

/* Implement TARGET_OPTION_INIT_STRUCT.  */

static void

alpha_option_init_struct (struct gcc_options *opts ATTRIBUTE_UNUSED)

{

#if TARGET_ABI_OPEN_VMS

  /* Enable section anchors by default.  */

  opts->x_flag_section_anchors = 1;

#endif

}

/* Implement TARGET_HANDLE_OPTION.  */

static bool

alpha_handle_option (struct gcc_options *opts,

                     struct gcc_options *opts_set ATTRIBUTE_UNUSED,

                     const struct cl_decoded_option *decoded,

                     location_t loc)

{

  size_t code = decoded->opt_index;

  const char *arg = decoded->arg;

  int value = decoded->value;

  switch (code)

    {

    case OPT_mfp_regs:

      if (value == 0)

        opts->x_target_flags |= MASK_SOFT_FP;

      break;

    case OPT_mieee:

    case OPT_mieee_with_inexact:

      opts->x_target_flags |= MASK_IEEE_CONFORMANT;

      break;

    case OPT_mtls_size_:

      if (value != 16 && value != 32 && value != 64)

        error_at (loc, "bad value %qs for -mtls-size switch", arg);

      break;

    }

  return true;

}

#undef TARGET_DEFAULT_TARGET_FLAGS

#define TARGET_DEFAULT_TARGET_FLAGS \

  (TARGET_DEFAULT | TARGET_CPU_DEFAULT | TARGET_DEFAULT_EXPLICIT_RELOCS)

#undef TARGET_HANDLE_OPTION

#define TARGET_HANDLE_OPTION alpha_handle_option

#undef TARGET_OPTION_INIT_STRUCT

#define TARGET_OPTION_INIT_STRUCT alpha_option_init_struct

#undef TARGET_OPTION_OPTIMIZATION_TABLE

#define TARGET_OPTION_OPTIMIZATION_TABLE alpha_option_optimization_table

struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;