gcc/testsuite/gcc.dg/bitint-107.c

   1 /* PR tree-optimization/115544 */
   2 /* { dg-do compile { target bitint } } */
   3 /* { dg-options "-O -fno-tree-fre -fno-tree-ccp -fno-tree-forwprop" } */
   4
   5 #if __BITINT_MAXWIDTH__ >= 129
   6 typedef _BitInt(129) B;
   7 #else
   8 typedef _BitInt(63) B;
   9 #endif
  10 B a, b;
  11
  12 int
  13 foo (void)
  14 {
  15   return __builtin_mul_overflow (a, 1, &b);
  16 }