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/* Common hooks for IA64.
   Copyright (C) 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 "tm_p.h"
#include "common/common-target.h"
#include "common/common-target-def.h"
#include "opts.h"
#include "flags.h"
#include "params.h"
 
/* Implement overriding of the optimization options.  */
static const struct default_options ia64_option_optimization_table[] =
  {
    { OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 },
#ifdef SUBTARGET_OPTIMIZATION_OPTIONS
    SUBTARGET_OPTIMIZATION_OPTIONS,
#endif
    { OPT_LEVELS_NONE, 0, NULL, 0 }
  };
 
/* Implement TARGET_HANDLE_OPTION.  */
 
static bool
ia64_handle_option (struct gcc_options *opts ATTRIBUTE_UNUSED,
		    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_mtls_size_:
      if (value != 14 && value != 22 && value != 64)
	error_at (loc, "bad value %<%s%> for -mtls-size= switch", arg);
      return true;
 
    default:
      return true;
    }
}
 
/* Implement TARGET_EXCEPT_UNWIND_INFO.  */
 
enum unwind_info_type
ia64_except_unwind_info (struct gcc_options *opts)
{
  /* Honor the --enable-sjlj-exceptions configure switch.  */
#ifdef CONFIG_UNWIND_EXCEPTIONS
  if (CONFIG_UNWIND_EXCEPTIONS)
    return UI_SJLJ;
#endif
 
  /* For simplicity elsewhere in this file, indicate that all unwind
     info is disabled if we're not emitting unwind tables.  */
  if (!opts->x_flag_exceptions && !opts->x_flag_unwind_tables)
    return UI_NONE;
 
  return UI_TARGET;
}
 
/* Implement TARGET_OPTION_DEFAULT_PARAMS.  */
 
static void
ia64_option_default_params (void)
{
  /* Let the scheduler form additional regions.  */
  set_default_param_value (PARAM_MAX_SCHED_EXTEND_REGIONS_ITERS, 2);
 
  /* Set the default values for cache-related parameters.  */
  set_default_param_value (PARAM_SIMULTANEOUS_PREFETCHES, 6);
  set_default_param_value (PARAM_L1_CACHE_LINE_SIZE, 32);
 
  set_default_param_value (PARAM_SCHED_MEM_TRUE_DEP_COST, 4);
}
 
#undef TARGET_OPTION_OPTIMIZATION_TABLE
#define TARGET_OPTION_OPTIMIZATION_TABLE ia64_option_optimization_table
#undef TARGET_OPTION_DEFAULT_PARAMS
#define TARGET_OPTION_DEFAULT_PARAMS ia64_option_default_params
 
#undef TARGET_EXCEPT_UNWIND_INFO
#define TARGET_EXCEPT_UNWIND_INFO  ia64_except_unwind_info
 
#undef TARGET_DEFAULT_TARGET_FLAGS
#define TARGET_DEFAULT_TARGET_FLAGS (TARGET_DEFAULT | TARGET_CPU_DEFAULT)
#undef TARGET_HANDLE_OPTION
#define TARGET_HANDLE_OPTION ia64_handle_option
 
struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;