gcc/testsuite/gcc.c-torture/execute/pr84169.c

   1 /* PR rtl-optimization/84169 */
   2
   3 #ifdef __SIZEOF_INT128__
   4 typedef unsigned __int128 T;
   5 #else
   6 typedef unsigned long long T;
   7 #endif
   8
   9 T b;
  10
  11 static __attribute__ ((noipa)) T
  12 foo (T c, T d, T e, T f, T g, T h)
  13 {
  14   __builtin_mul_overflow ((unsigned char) h, -16, &h);
  15   return b + h;
  16 }
  17
  18 int
  19 main ()
  20 {
  21   T x = foo (0, 0, 0, 0, 0, 4);
  22   if (x != -64)
  23     __builtin_abort ();
  24   return 0;
  25 }