2 /* { dg-options "-O2 -msse2" } */
3 /* { dg-require-effective-target sse2 } */
5 #include "sse2-check.h"
11 unsigned long long a[N], b[N], result[N];
13 unsigned long long check[N] =
14 { 0x101010101010100full,
15 0x1010101010101010ull,
16 0x1010101010101010ull,
17 0x1010101010101010ull };
20 unsigned_add3 (const __m64 * a, const __m64 * b,
21 __m64 * result, unsigned int count)
23 __m64 _a, _b, one, sum, carry, onesCarry;
27 carry = _mm_setzero_si64 ();
29 one = _mm_cmpeq_pi8 (carry, carry);
30 one = _mm_sub_si64 (carry, one);
32 for (i = 0; i < count; i++)
37 sum = _mm_add_si64 (_a, _b);
38 sum = _mm_add_si64 (sum, carry);
42 onesCarry = _mm_and_si64 (_mm_xor_si64 (_a, _b), carry);
43 onesCarry = _mm_or_si64 (_mm_and_si64 (_a, _b), onesCarry);
44 onesCarry = _mm_and_si64 (onesCarry, one);
46 _a = _mm_srli_si64 (_a, 1);
47 _b = _mm_srli_si64 (_b, 1);
49 carry = _mm_add_si64 (_mm_add_si64 (_a, _b), onesCarry);
50 carry = _mm_srli_si64 (carry, 63);
56 void __attribute__((noinline))
59 unsigned long long carry;
62 /* Really long numbers. */
63 a[3] = a[2] = a[1] = a[0] = 0xd3d3d3d3d3d3d3d3ull;
64 b[3] = b[2] = b[1] = b[0] = 0x3c3c3c3c3c3c3c3cull;
66 carry = (unsigned long long) unsigned_add3
67 ((__m64 *)a, (__m64 *)b, (__m64 *)result, N);
74 for (i = 0; i < N; i++)
75 if (result [i] != check[i])