gcc/testsuite/gcc.dg/torture/pr91656-3.c

   1 /* { dg-do run { target int128 } } */
   2 /* { dg-additional-options "-fgcse-after-reload" } */
   3
   4 typedef unsigned char u8;
   5 typedef unsigned short u16;
   6 typedef unsigned int u32;
   7 typedef unsigned long long u64;
   8 int a, b, c;
   9 int
  10 d (u16 e, u64 f)
  11 {
  12   b |= e;
  13 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
  14   __builtin_memset (&f, e, 2);
  15 #elif (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ \
  16        || __BYTE_ORDER__ == __ORDER_PDP_ENDIAN__)
  17   __builtin_memset ((char *) &f + sizeof (f) - 2, e, 2);
  18 #else
  19 #error "endian unknown?"
  20 #endif
  21   a = (u16) - e >= 2 ? : __builtin_popcountll (f);
  22   return a + c;
  23 }
  24
  25 int
  26 main (void)
  27 {
  28   __int128 x = d (~0, 0);
  29   if (x != 16)
  30     __builtin_abort ();
  31   return 0;
  32 }