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#ifdef __INT16_TYPE__
typedef __INT16_TYPE__ int16_t;
#else
typedef short int16_t;
#endif
#ifdef __UINT32_TYPE__
typedef __UINT32_TYPE__ uint32_t;
#else
typedef unsigned uint32_t;
#endif
#define __fake_const_swab32(x) ((uint32_t)( \
(((uint32_t) (x) & (uint32_t)0x000000ffUL) << 24) | \
(((uint32_t)(int16_t)(x) & (uint32_t)0x00ffff00UL) << 8) | \
(((uint32_t) (x) & (uint32_t)0x00ff0000UL) >> 8) | \
(((uint32_t) (x) & (uint32_t)0xff000000UL) >> 24)))
/* Previous version of bswap optimization failed to consider sign extension
and as a result would replace an expression *not* doing a bswap by a
bswap. */
__attribute__ ((noinline, noclone)) uint32_t
fake_bswap32 (uint32_t in)
{
return __fake_const_swab32 (in);
}
int
main(void)
{
if (sizeof (uint32_t) * __CHAR_BIT__ != 32)
return 0;
if (sizeof (int16_t) * __CHAR_BIT__ != 16)
return 0;
if (fake_bswap32 (0x81828384) != 0xff838281)
__builtin_abort ();
return 0;
}
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