[thirdparty/gcc.git] / gcc / testsuite / gcc.dg / pr40501.c

/* { dg-do compile { target alpha*-*-* ia64*-*-* i?86-*-* x86_64-*-* s390x-*-* } } */
/* { dg-options "-O2 -Wno-shift-overflow" } */
/* { dg-require-effective-target lp64 } */

/* PR middle-end/40501 */

/* This once failed due to the bswap pass missing to add the type
   casts of the signed argument and result to the proper unsigned
   types.  */

typedef long int int64_t;

int64_t
swap64 (int64_t n)
{
  return (((n & (((int64_t) 0xff) )) << 56) |
	  ((n & (((int64_t) 0xff) << 8)) << 40) |
	  ((n & (((int64_t) 0xff) << 16)) << 24) |
	  ((n & (((int64_t) 0xff) << 24)) << 8) |
	  ((n & (((int64_t) 0xff) << 32)) >> 8) |
	  ((n & (((int64_t) 0xff) << 40)) >> 24) |
	  ((n & (((int64_t) 0xff) << 48)) >> 40) |
	  ((n & (((int64_t) 0xff) << 56)) >> 56));
}
Commit	Line	Data
100a5180	1	/* { dg-do compile { target alpha--* ia64--* i?86-- x86_64-- s390x-- } } */
451b5e48	2	/* { dg-options "-O2 -Wno-shift-overflow" } */
fb6234e0 AK	3	/* { dg-require-effective-target lp64 } */
	4
	5	/* PR middle-end/40501 */
	6
	7	/* This once failed due to the bswap pass missing to add the type
	8	casts of the signed argument and result to the proper unsigned
	9	types. */
	10
	11	typedef long int int64_t;
	12
	13	int64_t
	14	swap64 (int64_t n)
	15	{
	16	return (((n & (((int64_t) 0xff) )) << 56) \|
	17	((n & (((int64_t) 0xff) << 8)) << 40) \|
	18	((n & (((int64_t) 0xff) << 16)) << 24) \|
	19	((n & (((int64_t) 0xff) << 24)) << 8) \|
	20	((n & (((int64_t) 0xff) << 32)) >> 8) \|
	21	((n & (((int64_t) 0xff) << 40)) >> 24) \|
	22	((n & (((int64_t) 0xff) << 48)) >> 40) \|
	23	((n & (((int64_t) 0xff) << 56)) >> 56));
	24	}