C++ (Cpp) _mm_sub_si64 Examples

Example #1

File: sse2-mmx.c Project: 0day-ci/gcc

__m64
unsigned_add3 (const __m64 * a, const __m64 * b,
	       __m64 * result, unsigned int count)
{
  __m64 _a, _b, one, sum, carry, onesCarry;

  unsigned int i;

  carry = _mm_setzero_si64 ();

  one = _mm_cmpeq_pi8 (carry, carry);
  one = _mm_sub_si64 (carry, one);

  for (i = 0; i < count; i++)
    {
      _a = a[i];
      _b = b[i];

      sum = _mm_add_si64 (_a, _b);
      sum = _mm_add_si64 (sum, carry);

      result[i] = sum;

      onesCarry = _mm_and_si64 (_mm_xor_si64 (_a, _b), carry);
      onesCarry = _mm_or_si64 (_mm_and_si64 (_a, _b), onesCarry);
      onesCarry = _mm_and_si64 (onesCarry, one);

      _a = _mm_srli_si64 (_a, 1);
      _b = _mm_srli_si64 (_b, 1);

      carry = _mm_add_si64 (_mm_add_si64 (_a, _b), onesCarry);
      carry = _mm_srli_si64 (carry, 63);
    }

  return carry;
}

Example #2

File: mmx-builtins.c Project: LegalizeAdulthood/clang

__m64 test_mm_sub_si64(__m64 a, __m64 b) {
  // CHECK-LABEL: test_mm_sub_si64
  // CHECK: call x86_mmx @llvm.x86.mmx.psub.q(x86_mmx %{{.*}}, x86_mmx %{{.*}})
  return _mm_sub_si64(a, b);
}