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/* Common hooks for Synopsys DesignWare ARC
Copyright (C) 1994-2015 Free Software Foundation, Inc.
Contributor: Joern Rennecke <joern.rennecke@embecosm.com>
on behalf of Synopsys 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 "opts.h"
#include "flags.h"
static void
arc_option_init_struct (struct gcc_options *opts)
{
opts->x_flag_no_common = 255; /* Mark as not user-initialized. */
/* Which cpu we're compiling for (ARC600, ARC601, ARC700, ARCv2). */
arc_cpu = PROCESSOR_NONE;
}
/* Set default optimization options. */
/* The conditions are incomplete, so we rely on the evaluation order here,
which goes from first to last, i.e. the last match prevails. */
/* ??? But this trick only works for reject_negative options. Approximate
missing option combination. */
#define OPT_LEVELS_3_PLUS_SPEED_ONLY OPT_LEVELS_3_PLUS
static const struct default_options arc_option_optimization_table[] =
{
{ OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 },
{ OPT_LEVELS_ALL, OPT_mRcq, NULL, 1 },
{ OPT_LEVELS_ALL, OPT_mRcw, NULL, 1 },
{ OPT_LEVELS_ALL, OPT_msize_level_, NULL, 1 },
{ OPT_LEVELS_3_PLUS_SPEED_ONLY, OPT_msize_level_, NULL, 0 },
{ OPT_LEVELS_SIZE, OPT_msize_level_, NULL, 3 },
{ OPT_LEVELS_3_PLUS_SPEED_ONLY, OPT_malign_call, NULL, 1 },
{ OPT_LEVELS_ALL, OPT_mearly_cbranchsi, NULL, 1 },
{ OPT_LEVELS_ALL, OPT_mbbit_peephole, NULL, 1 },
{ OPT_LEVELS_SIZE, OPT_mq_class, NULL, 1 },
{ OPT_LEVELS_SIZE, OPT_mcase_vector_pcrel, NULL, 1 },
{ OPT_LEVELS_SIZE, OPT_mcompact_casesi, NULL, 1 },
{ OPT_LEVELS_NONE, 0, NULL, 0 }
};
/* Process options. */
static bool
arc_handle_option (struct gcc_options *opts, struct gcc_options *opts_set,
const struct cl_decoded_option *decoded,
location_t loc)
{
size_t code = decoded->opt_index;
int value = decoded->value;
const char *arg = decoded->arg;
switch (code)
{
static int mcpu_seen = PROCESSOR_NONE;
case OPT_mcpu_:
/* N.B., at this point arc_cpu has already been set to its new value by
our caller, so comparing arc_cpu with PROCESSOR_NONE is pointless. */
if (mcpu_seen != PROCESSOR_NONE && mcpu_seen != value)
warning_at (loc, 0, "multiple -mcpu= options specified.");
mcpu_seen = value;
switch (value)
{
case PROCESSOR_ARC600:
case PROCESSOR_ARC700:
if (! (opts_set->x_target_flags & MASK_BARREL_SHIFTER) )
opts->x_target_flags |= MASK_BARREL_SHIFTER;
break;
case PROCESSOR_ARC601:
if (! (opts_set->x_target_flags & MASK_BARREL_SHIFTER) )
opts->x_target_flags &= ~MASK_BARREL_SHIFTER;
break;
case PROCESSOR_ARCHS:
if ( !(opts_set->x_target_flags & MASK_BARREL_SHIFTER))
opts->x_target_flags |= MASK_BARREL_SHIFTER; /* Default: on. */
if ( !(opts_set->x_target_flags & MASK_CODE_DENSITY))
opts->x_target_flags |= MASK_CODE_DENSITY; /* Default: on. */
if ( !(opts_set->x_target_flags & MASK_NORM_SET))
opts->x_target_flags |= MASK_NORM_SET; /* Default: on. */
if ( !(opts_set->x_target_flags & MASK_SWAP_SET))
opts->x_target_flags |= MASK_SWAP_SET; /* Default: on. */
if ( !(opts_set->x_target_flags & MASK_DIVREM))
opts->x_target_flags |= MASK_DIVREM; /* Default: on. */
break;
case PROCESSOR_ARCEM:
if ( !(opts_set->x_target_flags & MASK_BARREL_SHIFTER))
opts->x_target_flags |= MASK_BARREL_SHIFTER; /* Default: on. */
if ( !(opts_set->x_target_flags & MASK_CODE_DENSITY))
opts->x_target_flags &= ~MASK_CODE_DENSITY; /* Default: off. */
if ( !(opts_set->x_target_flags & MASK_NORM_SET))
opts->x_target_flags &= ~MASK_NORM_SET; /* Default: off. */
if ( !(opts_set->x_target_flags & MASK_SWAP_SET))
opts->x_target_flags &= ~MASK_SWAP_SET; /* Default: off. */
if ( !(opts_set->x_target_flags & MASK_DIVREM))
opts->x_target_flags &= ~MASK_DIVREM; /* Default: off. */
break;
default:
gcc_unreachable ();
}
break;
case OPT_mmpy_option_:
if (value < 0 || value > 9)
error_at (loc, "bad value %qs for -mmpy-option switch", arg);
break;
}
return true;
}
#define TARGET_OPTION_INIT_STRUCT arc_option_init_struct
#define TARGET_OPTION_OPTIMIZATION_TABLE arc_option_optimization_table
#define TARGET_HANDLE_OPTION arc_handle_option
#define DEFAULT_NO_SDATA (TARGET_SDATA_DEFAULT ? 0 : MASK_NO_SDATA_SET)
/* We default to ARC700, which has the barrel shifter enabled. */
#define TARGET_DEFAULT_TARGET_FLAGS \
(MASK_BARREL_SHIFTER|MASK_VOLATILE_CACHE_SET|DEFAULT_NO_SDATA)
#include "common/common-target-def.h"
struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;
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