gcc/testsuite/gcc.dg/tree-ssa/recip-6.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 int f2();
   7
   8 double m, n, o;
   9
  10 void f1(double y, double z, double w)
  11 {
  12   double b, c, d, e, f;
  13
  14   if (g ())
  15     b = 1 / y, c = z / y;
  16   else
  17     b = 3 / y, c = w / y;
  18
  19   d = b / y;
  20   e = c / y;
  21   f = 1 / y;
  22
  23   m = d;
  24   n = e;
  25   o = f;
  26 }
  27
  28 /* { dg-final { scan-tree-dump-times " / " 1 "recip" } } */
  29 /* { dg-final { cleanup-tree-dump "recip" } } */
  30