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哪种代码更适合分支预测优化?
给定分支预测以及编译器优化的效果,哪种代码倾向于提供出色的性能? 请注意,bRareExceptionPresent表示不常见的情况。这不是逻辑的正常路径。 /* MOST COMMON path must branch around IF clause */ bool SomeFunction(bool bRareExceptionPresent) { // abort before function if(bRareExceptionPresent) { return false; } .. function primary body .. return true; } /* MOST COMMON path does NOT branch */ bool SomeFunction(bool bRareExceptionPresent) { if(!bRareExceptionPresent) { .. function primary …