用于进行gcc测试

				/* { dg-do compile } */				/* { dg-options "-fno-strict-overflow -O2 -fdump-tree-final_cleanup" } */								/* Source: Ian Lance Taylor.  Dual of strict-overflow-3.c.  */								/* We can only simplify the conditional when using strict overflow				   semantics.  */								int				foo (int i, int j)				{				  return i + 100 < j + 1000;				}								/* { dg-final { scan-tree-dump "1000" "final_cleanup" } } */				/* { dg-final { cleanup-tree-dump "final_cleanup" } } */