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copied!<p>Here's a different question</p> <blockquote> <p>Why do you think such a small optimization will matter in the greater context of your program?</p> </blockquote> <p>I find it <strong>highly</strong> unlikely that a micro-optimization such as this will have an perceivable impact on your program. You should never micro-optimize like this unless a profiler has specifically shown this to be a problem. </p> <p><strong>EDIT</strong> Adding some clarification buried in the comments</p> <p>The reason there is no great answer to this question is that the performance of that code is highly dependent upon ...</p> <ol> <li>The way in which it's used in your program</li> <li>The particular compiler you're using</li> <li>The optimization flags passed to your compiler</li> <li>The particular architecture you are running the code on </li> <li>Many other very tiny things that weren't included in the question</li> </ol> <p>Even if all of this information was included, our answers would be guesses at best. The only way to answer this question is to whip out a profiler and find out which is faster. </p> <p>However this is almost certainly not worth the effort. Micro-optimizing such a small piece of your program will almost certainly not add any noticable preformance benefits to your code. In general it's a really bad idea to optimize code like this unless the profiler specifically tells you it's a problem. Otherwise you'll spend a lot of time optimizing something for no percievable benefit. </p> <p>Yes there are cases where such an optimization could be important. But that would be only in a <strong>very special</strong> circumstances where the code was a part of a very tight highly called loop. However the only way to identify such code is to use a profiler. </p>

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