Does the .NET CLR Really Optimize for the Current Processor

Posted by dewald on Stack Overflow See other posts from Stack Overflow or by dewald
Published on 2010-03-08T22:39:18Z Indexed on 2010/03/08 22:51 UTC
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Filed under:

clr

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.NET

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optimization

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c#

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jit

When I read about the performance of JITted languages like C# or Java, authors usually say that they should/could theoretically outperform many native-compiled applications. The theory being that native applications are usually just compiled for a processor family (like x86), so the compiler cannot make certain optimizations as they may not truly be optimizations on all processors. On the other hand, the CLR can make processor-specific optimizations during the JIT process.

Does anyone know if Microsoft's (or Mono's) CLR actually performs processor-specific optimizations during the JIT process? If so, what kind of optimizations?

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