There is a major difference between performing profile-generated optimizations a... | Hacker News

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		pbiggar on Oct 8, 2012 \| parent \| context \| favorite \| on: Faster than C? Parsing binary data in JavaScript. There is a major difference between performing profile-generated optimizations at compile-time based on sample data, and performing it at run-time based on real data. It is one pretty good way in which JITs could beat programs implemented directly in C.

gillianseed on Oct 8, 2012 [–]

Not really since the 'sample' data is 'real' data which has been gathered during run-time.

pbiggar on Oct 9, 2012 | [–]

That is the most optimistic statement about profile-directed optimization that I have ever read.

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