[cfe-dev] Fibonacci template metaprogram performance

[Douglas Gregor]

Here are some quick-n-dirty performance results for template  
instantiation in Clang and GCC 4.2. The test is very simple: measure  
compilation time (-fsyntax-only) for a translation unit that computes  
the Nth Fibonacci number via a template metaprogram. Clang appears to  
be scaling linearly (or close to it) with the number of  
instantiations. And, although you can't see it in the chart, Clang is  
a little over 2x faster than GCC at the beginning (Fibonacci<100>).

	- Doug

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