#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "rtl.h"
#include "rtlhooks-def.h"
#include "expr.h"
const struct rtl_hooks general_rtl_hooks = RTL_HOOKS_INITIALIZER;
struct rtl_hooks rtl_hooks = RTL_HOOKS_INITIALIZER;
rtx
gen_lowpart_general (enum machine_mode mode, rtx x)
{
rtx result = gen_lowpart_common (mode, x);
if (result)
return result;
else if (REG_P (x))
{
result = gen_lowpart_common (mode, copy_to_reg (x));
gcc_assert (result != 0);
return result;
}
else
{
int offset = 0;
gcc_assert (MEM_P (x));
if (GET_MODE_SIZE (GET_MODE (x)) <= UNITS_PER_WORD
&& SCALAR_INT_MODE_P (GET_MODE (x))
&& TRULY_NOOP_TRUNCATION (GET_MODE_BITSIZE (mode),
GET_MODE_BITSIZE (GET_MODE (x)))
&& ! no_new_pseudos)
return gen_lowpart_general (mode, force_reg (GET_MODE (x), x));
if (WORDS_BIG_ENDIAN)
offset = (MAX (GET_MODE_SIZE (GET_MODE (x)), UNITS_PER_WORD)
- MAX (GET_MODE_SIZE (mode), UNITS_PER_WORD));
if (BYTES_BIG_ENDIAN)
offset -= (MIN (UNITS_PER_WORD, GET_MODE_SIZE (mode))
- MIN (UNITS_PER_WORD, GET_MODE_SIZE (GET_MODE (x))));
return adjust_address (x, mode, offset);
}
}
rtx
reg_num_sign_bit_copies_general (rtx x ATTRIBUTE_UNUSED,
enum machine_mode mode ATTRIBUTE_UNUSED,
rtx known_x ATTRIBUTE_UNUSED,
enum machine_mode known_mode ATTRIBUTE_UNUSED,
unsigned int known_ret ATTRIBUTE_UNUSED,
unsigned int *result ATTRIBUTE_UNUSED)
{
return NULL;
}
rtx
reg_nonzero_bits_general (rtx x ATTRIBUTE_UNUSED,
enum machine_mode mode ATTRIBUTE_UNUSED,
rtx known_x ATTRIBUTE_UNUSED,
enum machine_mode known_mode ATTRIBUTE_UNUSED,
unsigned HOST_WIDE_INT known_ret ATTRIBUTE_UNUSED,
unsigned HOST_WIDE_INT *nonzero ATTRIBUTE_UNUSED)
{
return NULL;
}