1  /* { dg-do compile } */
       2  /* { dg-options "-O -fdump-tree-optimized -frounding-math" } */
       3  
       4  void bar(float x);
       5  void foo(double x)
       6  {
       7    bar(-x);
       8  }
       9  
      10  /* { dg-final { scan-tree-dump-not "-\\(float\\)" "optimized" } } */