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/* { dg-do run } */
/* { dg-options "-O3" } */
/* { dg-require-effective-target lp64 } */
#define NO_WARN_X86_INTRINSICS 1
#include <x86intrin.h>
#include "bmi2-check.h"
__attribute__((noinline))
unsigned long long
calc_bzhi_u64 (unsigned long long a, int l)
{
unsigned long long res = a;
int i;
for (i = 0; i < 64 - l; ++i)
res &= ~(1LL << (63 - i));
return res;
}
static void
bmi2_test ()
{
unsigned i;
unsigned long long src = 0xce7ace0ce7ace0ff;
unsigned long long res, res_ref;
for (i = 0; i < 5; ++i) {
src = src * (i + 1);
res_ref = calc_bzhi_u64 (src, i * 2);
res = _bzhi_u64 (src, i * 2);
if (res != res_ref)
abort();
}
}
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