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Hi, On 01/08/2014 10:24 AM, Jonathan Wakely wrote:
I only want to add that, besides keeping compile-time under control for 4.9.0 - please investigate a bit more along the mentioned lines - we should also start experimenting with exporting the instantiations. I don't know what the other implementations are doing, but in general it definitely makes sense, for compile-time performance too. I think we already said that some time ago, but the issue seems more important now. Maybe it's really unavoidable if we need template complexity for first class run-time performance.On 7 January 2014 19:36, Tim Shen wrote:I didn't noticed that's so time consuming. I think reducing the compile time is possible (by templating several member functions instead of whole _Compiler<> class).Ouch! Yes, that's quite a bit slower, and this code is already very slow to compile. I haven't looked at the code recently, but another option that sometimes helps is to have a base class that implements the common functionality and then derive four classes from it, but minimise the amount of code in the derived classes.
Paolo.
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