gcc/testsuite/gcc.dg/tree-ssa/recip-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -funsafe-math-optimizations -fdump-tree-recip" } */
   3
   4 float e(float *x, float *y, float *z)
   5 {
   6   float m = __builtin_sqrt (*x * *x + *y * *y + *z * *z);
   7   *x /= m;
   8   *y /= m;
   9   *z /= m;
  10 }
  11
  12 /* Look for only one division.  */
  13 /* { dg-final { scan-tree-dump-times "= .* /" 1 "recip" } } */
  14 /* { dg-final { cleanup-tree-dump "recip" } } */