gcc/testsuite/gcc.dg/vect/pr71264.c


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/* { dg-do compile } */

typedef unsigned char uint8_t;
typedef uint8_t footype __attribute__((vector_size(4)));

void test(uint8_t *ptr, uint8_t *mask)
{
  footype mv;
  ptr = __builtin_assume_aligned (ptr, __alignof__ (footype));
  mask = __builtin_assume_aligned (mask, __alignof__ (footype));
  __builtin_memcpy(&mv, mask, sizeof(mv));
  for (unsigned i = 0; i < 16; i += 4)
    {
      footype temp;
      __builtin_memcpy(&temp, &ptr[i], sizeof(temp));
      temp ^= mv;
      __builtin_memcpy(&ptr[i], &temp, sizeof(temp));
    }
}