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 m, n, o;
   9
  10 void f(int x, double z, double w)
  11 {
  12   double b, c, d, e, f;
  13   double y = h ();
  14
  15   if (x)
  16     b = 1 / y, c = z / y;
  17   else
  18     b = 3 / y, c = w / y;
  19
  20   d = b / y;
  21   e = c / y;
  22   f = 1 / y;
  23
  24   m = d;
  25   n = e;
  26   o = f;
  27 }
  28
  29 /* { dg-final { scan-tree-dump-times " / " 1 "recip" } } */
  30 /* { dg-final { cleanup-tree-dump "recip" } } */
  31