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/* Common hooks for IBM RS/6000.
Copyright (C) 1991-2014 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"
#include "params.h"
/* Implement TARGET_OPTION_OPTIMIZATION_TABLE. */
static const struct default_options rs6000_option_optimization_table[] =
{
{ OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 },
{ OPT_LEVELS_NONE, 0, NULL, 0 }
};
/* Implement TARGET_OPTION_INIT_STRUCT. */
static void
rs6000_option_init_struct (struct gcc_options *opts)
{
if (DEFAULT_ABI == ABI_DARWIN)
/* The Darwin libraries never set errno, so we might as well
avoid calling them when that's the only reason we would. */
opts->x_flag_errno_math = 0;
/* Enable section anchors by default. */
if (!TARGET_MACHO)
opts->x_flag_section_anchors = 1;
}
/* Implement TARGET_OPTION_DEFAULT_PARAMS. */
static void
rs6000_option_default_params (void)
{
/* Double growth factor to counter reduced min jump length. */
set_default_param_value (PARAM_MAX_GROW_COPY_BB_INSNS, 16);
}
/* If not otherwise specified by a target, make 'long double' equivalent to
'double'. */
#ifndef RS6000_DEFAULT_LONG_DOUBLE_SIZE
#define RS6000_DEFAULT_LONG_DOUBLE_SIZE 64
#endif
/* Implement TARGET_HANDLE_OPTION. */
static bool
rs6000_handle_option (struct gcc_options *opts, struct gcc_options *opts_set,
const struct cl_decoded_option *decoded,
location_t loc)
{
enum fpu_type_t fpu_type = FPU_NONE;
char *p, *q;
size_t code = decoded->opt_index;
const char *arg = decoded->arg;
int value = decoded->value;
switch (code)
{
case OPT_mfull_toc:
opts->x_rs6000_isa_flags &= ~OPTION_MASK_MINIMAL_TOC;
opts->x_TARGET_NO_FP_IN_TOC = 0;
opts->x_TARGET_NO_SUM_IN_TOC = 0;
opts_set->x_rs6000_isa_flags |= OPTION_MASK_MINIMAL_TOC;
#ifdef TARGET_USES_SYSV4_OPT
/* Note, V.4 no longer uses a normal TOC, so make -mfull-toc, be
just the same as -mminimal-toc. */
opts->x_rs6000_isa_flags |= OPTION_MASK_MINIMAL_TOC;
opts_set->x_rs6000_isa_flags |= OPTION_MASK_MINIMAL_TOC;
#endif
break;
#ifdef TARGET_USES_SYSV4_OPT
case OPT_mtoc:
/* Make -mtoc behave like -mminimal-toc. */
opts->x_rs6000_isa_flags |= OPTION_MASK_MINIMAL_TOC;
opts_set->x_rs6000_isa_flags |= OPTION_MASK_MINIMAL_TOC;
break;
#endif
#ifdef TARGET_USES_AIX64_OPT
case OPT_maix64:
#else
case OPT_m64:
#endif
opts->x_rs6000_isa_flags |= OPTION_MASK_POWERPC64;
opts->x_rs6000_isa_flags |= (~opts_set->x_rs6000_isa_flags
& OPTION_MASK_PPC_GFXOPT);
opts_set->x_rs6000_isa_flags |= OPTION_MASK_POWERPC64;
break;
#ifdef TARGET_USES_AIX64_OPT
case OPT_maix32:
#else
case OPT_m32:
#endif
opts->x_rs6000_isa_flags &= ~OPTION_MASK_POWERPC64;
opts_set->x_rs6000_isa_flags |= OPTION_MASK_POWERPC64;
break;
case OPT_mminimal_toc:
if (value == 1)
{
opts->x_TARGET_NO_FP_IN_TOC = 0;
opts->x_TARGET_NO_SUM_IN_TOC = 0;
}
break;
case OPT_mpowerpc_gpopt:
case OPT_mpowerpc_gfxopt:
break;
case OPT_mdebug_:
p = ASTRDUP (arg);
opts->x_rs6000_debug = 0;
while ((q = strtok (p, ",")) != NULL)
{
unsigned mask = 0;
bool invert;
p = NULL;
if (*q == '!')
{
invert = true;
q++;
}
else
invert = false;
if (! strcmp (q, "all"))
mask = MASK_DEBUG_ALL;
else if (! strcmp (q, "stack"))
mask = MASK_DEBUG_STACK;
else if (! strcmp (q, "arg"))
mask = MASK_DEBUG_ARG;
else if (! strcmp (q, "reg"))
mask = MASK_DEBUG_REG;
else if (! strcmp (q, "addr"))
mask = MASK_DEBUG_ADDR;
else if (! strcmp (q, "cost"))
mask = MASK_DEBUG_COST;
else if (! strcmp (q, "target"))
mask = MASK_DEBUG_TARGET;
else if (! strcmp (q, "builtin"))
mask = MASK_DEBUG_BUILTIN;
else
error_at (loc, "unknown -mdebug-%s switch", q);
if (invert)
opts->x_rs6000_debug &= ~mask;
else
opts->x_rs6000_debug |= mask;
}
break;
#ifdef TARGET_USES_SYSV4_OPT
case OPT_mrelocatable:
if (value == 1)
{
opts->x_rs6000_isa_flags |= OPTION_MASK_MINIMAL_TOC;
opts_set->x_rs6000_isa_flags |= OPTION_MASK_MINIMAL_TOC;
opts->x_TARGET_NO_FP_IN_TOC = 1;
}
break;
case OPT_mrelocatable_lib:
if (value == 1)
{
opts->x_rs6000_isa_flags |= (OPTION_MASK_RELOCATABLE
| OPTION_MASK_MINIMAL_TOC);
opts_set->x_rs6000_isa_flags |= (OPTION_MASK_RELOCATABLE
| OPTION_MASK_MINIMAL_TOC);
opts->x_TARGET_NO_FP_IN_TOC = 1;
}
else
{
opts->x_rs6000_isa_flags &= ~OPTION_MASK_RELOCATABLE;
opts_set->x_rs6000_isa_flags |= OPTION_MASK_RELOCATABLE;
}
break;
#endif
case OPT_mabi_altivec:
/* Enabling the AltiVec ABI turns off the SPE ABI. */
opts->x_rs6000_spe_abi = 0;
break;
case OPT_mabi_spe:
opts->x_rs6000_altivec_abi = 0;
break;
case OPT_mlong_double_:
if (value != 64 && value != 128)
{
error_at (loc, "unknown switch -mlong-double-%s", arg);
opts->x_rs6000_long_double_type_size
= RS6000_DEFAULT_LONG_DOUBLE_SIZE;
return false;
}
break;
case OPT_msingle_float:
if (!TARGET_SINGLE_FPU)
warning_at (loc, 0,
"-msingle-float option equivalent to -mhard-float");
/* -msingle-float implies -mno-double-float and TARGET_HARD_FLOAT. */
opts->x_rs6000_double_float = 0;
opts->x_rs6000_isa_flags &= ~OPTION_MASK_SOFT_FLOAT;
opts_set->x_rs6000_isa_flags |= OPTION_MASK_SOFT_FLOAT;
break;
case OPT_mdouble_float:
/* -mdouble-float implies -msingle-float and TARGET_HARD_FLOAT. */
opts->x_rs6000_single_float = 1;
opts->x_rs6000_isa_flags &= ~OPTION_MASK_SOFT_FLOAT;
opts_set->x_rs6000_isa_flags |= OPTION_MASK_SOFT_FLOAT;
break;
case OPT_msimple_fpu:
if (!TARGET_SINGLE_FPU)
warning_at (loc, 0, "-msimple-fpu option ignored");
break;
case OPT_mhard_float:
/* -mhard_float implies -msingle-float and -mdouble-float. */
opts->x_rs6000_single_float = opts->x_rs6000_double_float = 1;
break;
case OPT_msoft_float:
/* -msoft_float implies -mnosingle-float and -mnodouble-float. */
opts->x_rs6000_single_float = opts->x_rs6000_double_float = 0;
break;
case OPT_mfpu_:
fpu_type = (enum fpu_type_t) value;
if (fpu_type != FPU_NONE)
{
/* If -mfpu is not none, then turn off SOFT_FLOAT, turn on
HARD_FLOAT. */
opts->x_rs6000_isa_flags &= ~OPTION_MASK_SOFT_FLOAT;
opts_set->x_rs6000_isa_flags |= OPTION_MASK_SOFT_FLOAT;
opts->x_rs6000_xilinx_fpu = 1;
if (fpu_type == FPU_SF_LITE || fpu_type == FPU_SF_FULL)
opts->x_rs6000_single_float = 1;
if (fpu_type == FPU_DF_LITE || fpu_type == FPU_DF_FULL)
opts->x_rs6000_single_float = opts->x_rs6000_double_float = 1;
if (fpu_type == FPU_SF_LITE || fpu_type == FPU_DF_LITE)
opts->x_rs6000_simple_fpu = 1;
}
else
{
/* -mfpu=none is equivalent to -msoft-float. */
opts->x_rs6000_isa_flags |= OPTION_MASK_SOFT_FLOAT;
opts_set->x_rs6000_isa_flags |= OPTION_MASK_SOFT_FLOAT;
opts->x_rs6000_single_float = opts->x_rs6000_double_float = 0;
}
break;
case OPT_mrecip:
opts->x_rs6000_recip_name = (value) ? "default" : "none";
break;
}
return true;
}
#undef TARGET_HANDLE_OPTION
#define TARGET_HANDLE_OPTION rs6000_handle_option
#undef TARGET_OPTION_INIT_STRUCT
#define TARGET_OPTION_INIT_STRUCT rs6000_option_init_struct
#undef TARGET_OPTION_DEFAULT_PARAMS
#define TARGET_OPTION_DEFAULT_PARAMS rs6000_option_default_params
#undef TARGET_OPTION_OPTIMIZATION_TABLE
#define TARGET_OPTION_OPTIMIZATION_TABLE rs6000_option_optimization_table
struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;
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