[thirdparty/gcc.git] / gcc / testsuite / gcc.dg / tree-ssa / clz-complement-long-long.c

/* { dg-do run } */
/* { dg-require-effective-target clzll } */
/* { dg-options "-O2 -fdump-tree-optimized" } */

#define PREC (__CHAR_BIT__ * __SIZEOF_LONG_LONG__)

int
__attribute__ ((noinline, noclone))
foo (unsigned long long b) {
    int c = 0;

    while (b) {
	b >>= 1;
	c++;
    }

    return c;
}

int main()
{
  if (foo(0) != 0)
    __builtin_abort ();
  if (foo(5) != 3)
    __builtin_abort ();
  if (foo(1LL << (PREC - 1)) != PREC)
    __builtin_abort ();
  return 0;
}

/* { dg-final { scan-tree-dump-times "__builtin_clz|\\.CLZ" 1 "optimized" } } */
Commit	Line	Data
d347fbf7 AC	1	/* { dg-do run } */
	2	/* { dg-require-effective-target clzll } */
	3	/* { dg-options "-O2 -fdump-tree-optimized" } */
	4
	5	#define PREC (__CHAR_BIT__ * __SIZEOF_LONG_LONG__)
	6
	7	int
	8	__attribute__ ((noinline, noclone))
	9	foo (unsigned long long b) {
	10	int c = 0;
	11
	12	while (b) {
	13	b >>= 1;
	14	c++;
	15	}
	16
	17	return c;
	18	}
	19
	20	int main()
	21	{
	22	if (foo(0) != 0)
	23	__builtin_abort ();
	24	if (foo(5) != 3)
	25	__builtin_abort ();
	26	if (foo(1LL << (PREC - 1)) != PREC)
	27	__builtin_abort ();
	28	return 0;
	29	}
	30
	31	/* { dg-final { scan-tree-dump-times "__builtin_clz\|\\.CLZ" 1 "optimized" } } */