This is valuable information because you can construct expressions that can be optimized through constant folding. 这种信息非常有价值,因为可以构造出能够通过常量叠算(constantfolding)优化的表达式。
The example used above can be optimized by constant folding because the computation generating the constant is in the same control-flow block. 上面使用的那个例子能通过常数合并最优化,是因为生成常数的计算处在相同的控制流块中。
Constant folding, common subexpression elimination are effective techniques in optimizing intermediate code. 常量合并、删除公共子表达式是中间代码优化时采用的有效技术。
It stands to reason that an anti-virus technology may use constant folding to undo the obfuscation created by constant unfolding. 顺理成章地,反病毒技术可以使用常数合并来还原由常数展开造成的混淆。