gcc/testsuite/gcc.target/arm/builtin_usubll.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2" }  */
   3 /* { dg-require-effective-target arm32 } */
   4 extern void overflow_handler ();
   5
   6 unsigned long long overflow_sub (unsigned long long x, unsigned long long y)
   7 {
   8   unsigned long long r;
   9
  10   int ovr = __builtin_usubll_overflow (x, y, &r);
  11   if (ovr)
  12     overflow_handler ();
  13
  14   return r;
  15 }
  16
  17 /* { dg-final { scan-assembler "subs" } } */
  18 /* { dg-final { scan-assembler "sbcs" } } */