1 #include <cstdint>
2 
3 struct alignas(16) vec_t {
4   uint64_t a, b;
5 };
6 
7 int main() {
8   constexpr uint32_t gprs[] = {
9     0x00010203,
10     0x10111213,
11     0x20212223,
12     0x30313233,
13     0x40414243,
14     0x50515253,
15     0x60616263,
16     0x70717273,
17   };
18 
19   constexpr vec_t vecs[] = {
20     { 0x0F0E0D0C0B0A0908, 0x1716151413121110, },
21     { 0x100F0E0D0C0B0A09, 0x1817161514131211, },
22     { 0x11100F0E0D0C0B0A, 0x1918171615141312, },
23     { 0x1211100F0E0D0C0B, 0x1A19181716151413, },
24   };
25   const vec_t *vec_ptr = vecs;
26 
27   asm volatile(
28     "ldrd     r0,  r1,  [%1]\n\t"
29     "ldrd     r2,  r3,  [%1, #8]\n\t"
30     "ldrd     r4,  r5,  [%1, #16]\n\t"
31     "ldrd     r6,  r7,  [%1, #24]\n\t"
32     "\n\t"
33     "vld1.64  {q0, q1}, [%0]!\n\t"
34     "vld1.64  {q2, q3}, [%0]!\n\t"
35     "\n\t"
36     "bkpt     #0\n\t"
37     : "+r"(vec_ptr)
38     : "r"(gprs)
39     : "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
40       "q0", "q1", "q2", "q3"
41   );
42 
43   return 0;
44 }
45