1 /* { dg-do compile } */ 2 /* { dg-options "-O2 -fdump-tree-optimized" } */ a(int x)3int a (int x) { 4 return ~x + 1; /* -x */ 5 } 6 b(int x)7int 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" } } */ 13