gcc/testsuite/gcc.dg/tree-ssa/recip-7.c

   1 /* { dg-options "-O1 -funsafe-math-optimizations -fno-trapping-math -fdump-tree-recip" } */
   2 /* { dg-do compile } */
   3
   4 /* Test inserting in a block that does not contain a division.  */
   5
   6 extern double h();
   7
   8 double f(int x, double z, double w)
   9 {
  10   double b, c, d, e, f;
  11   double y = h ();
  12
  13   if (x)
  14     b = 1 / y, c = z / y;
  15   else
  16     b = 3 / y, c = w / y;
  17
  18   d = b / y;
  19   e = c / y;
  20   f = 1 / y;
  21
  22   return d + e + f;
  23 }
  24
  25 /* { dg-final { scan-tree-dump-times " / " 1 "recip" } } */
  26 /* { dg-final { cleanup-tree-dump "recip" } } */
  27