1  /* { dg-do compile } */
       2  /* { dg-options "-O -g -fdump-tree-backprop-details" }  */
       3  
       4  /* Test a loop that does both a multiplication and addition.  The addition
       5     should prevent any sign ops from being removed.  */
       6  #define TEST_FUNCTION(TYPE, SUFFIX)			\
       7    TYPE							\
       8    test##SUFFIX (TYPE x, TYPE y, TYPE *array, int n)	\
       9    {							\
      10      x = __builtin_copysign##SUFFIX (x, y);		\
      11      for (int i = 0; i < n; ++i)				\
      12        x = (x + 1) * array[i];				\
      13      return __builtin_hypot##SUFFIX (x, y);		\
      14    }
      15  
      16  TEST_FUNCTION (float, f)
      17  TEST_FUNCTION (double, )
      18  TEST_FUNCTION (long double, l)
      19  
      20  /* { dg-final { scan-tree-dump-times {Deleting[^\n]* = __builtin_copysign} 0 "backprop" } } */