1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -fdump-tree-optimized" } */
       3  int a (int x) {
       4  	return ~x + 1; /* -x */
       5  }
       6  
       7  int b (int x) {
       8  	return -x -1; /* ~x */
       9  }
      10  
      11  /* { dg-final { scan-tree-dump "~x_..D.;" "optimized" } } */
      12  /* { dg-final { scan-tree-dump "-x_..D.;" "optimized" } } */