gcc/testsuite/gcc.dg/pr107975.c

   1 /* PR tree-optimization/107975 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2" } */
   4 /* { dg-add-options ieee } */
   5
   6 double
   7 foo (double x, double y)
   8 {
   9   if (x == 42.0)
  10     return 1.0;
  11   double r = x * y;
  12   if (!__builtin_isnan (r))
  13     __builtin_unreachable ();
  14   return r;
  15 }