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

   1 /* { dg-do compile } */
   2
   3 typedef unsigned char uint8_t;
   4 typedef uint8_t footype __attribute__((vector_size(4)));
   5
   6 void test(uint8_t *ptr, uint8_t *mask)
   7 {
   8   footype mv;
   9   ptr = __builtin_assume_aligned (ptr, __alignof__ (footype));
  10   mask = __builtin_assume_aligned (mask, __alignof__ (footype));
  11   __builtin_memcpy(&mv, mask, sizeof(mv));
  12   for (unsigned i = 0; i < 16; i += 4)
  13     {
  14       footype temp;
  15       __builtin_memcpy(&temp, &ptr[i], sizeof(temp));
  16       temp ^= mv;
  17       __builtin_memcpy(&ptr[i], &temp, sizeof(temp));
  18     }
  19 }