gcc/testsuite/gcc.dg/tree-ssa/recip-8.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -ffast-math -fdump-tree-optimized" } */
   3
   4 double bar (double, double, double, double, double);
   5
   6 double
   7 foo (double a)
   8 {
   9   return bar (1.0/a, 2.0/a, 4.0/a, 8.0/a, 16.0/a);
  10 }
  11
  12 /* { dg-final { scan-tree-dump-times "/" 1 "optimized"  } } */