gcc/testsuite/gcc.target/i386/pr86386.c

   1 /* PR target/86386 */
   2 /* { dg-do run { target { avx_runtime && int128 } } } */
   3 /* { dg-options "-Os -fno-tree-dce -mstringop-strategy=vector_loop -mavx" } */
   4
   5 unsigned c, d, e, f;
   6
   7 unsigned __attribute__((noipa))
   8 foo (unsigned char g, unsigned short h, unsigned i, unsigned long long j,
   9      unsigned char k, unsigned short l, unsigned m, unsigned __int128 n)
  10 {
  11   __builtin_memset (&e, 0, 3);
  12   n <<= m;
  13   __builtin_memcpy (&m, 2 + (char *) &n, 1);
  14   m >>= 0;
  15   d ^= __builtin_mul_overflow (l, n, &m);
  16   return m;
  17 }
  18
  19 int
  20 main ()
  21 {
  22   unsigned __int128 x = foo (0, 0, 0, 0, 0, 4, 1, 3);
  23   if (x != 24)
  24     __builtin_abort ();
  25   return 0;
  26 }