1  /* PR tree-optimization/90356 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O2 -fno-rounding-math -fsignaling-nans -fsigned-zeros -fdump-tree-optimized" } */
       4  /* { dg-final { scan-tree-dump-times "x_\[0-9]*.D. \\+ 0.0;" 12 "optimized" } } */
       5  /* { dg-final { scan-tree-dump-times "y_\[0-9]*.D. - 0.0;" 4 "optimized" } } */
       6  /* { dg-final { scan-tree-dump-times " \[+-] 0.0;" 16 "optimized" } } */
       7  
       8  double f1 (double x) { return (x + 0.0) + 0.0; }
       9  double f2 (double y) { return (y + (-0.0)) + (-0.0); }
      10  double f3 (double y) { return (y - 0.0) - 0.0; }
      11  double f4 (double x) { return (x - (-0.0)) - (-0.0); }
      12  double f5 (double x) { return (x + 0.0) - 0.0; }
      13  double f6 (double x) { return (x + (-0.0)) - (-0.0); }
      14  double f7 (double x) { return (x - 0.0) + 0.0; }
      15  double f8 (double x) { return (x - (-0.0)) + (-0.0); }
      16  double f9 (double x) { double t = x + 0.0; return t + 0.0; }
      17  double f10 (double y) { double t = y + (-0.0); return t + (-0.0); }
      18  double f11 (double y) { double t = y - 0.0; return t - 0.0; }
      19  double f12 (double x) { double t = x - (-0.0); return t - (-0.0); }
      20  double f13 (double x) { double t = x + 0.0; return t - 0.0; }
      21  double f14 (double x) { double t = x + (-0.0); return t - (-0.0); }
      22  double f15 (double x) { double t = x - 0.0; return t + 0.0; }
      23  double f16 (double x) { double t = x - (-0.0); return t + (-0.0); }