[llvm-dev] TableGen enhancements

[Simon Pilgrim via llvm-dev]

Thanks Paul - Its awesome to have someone looking at tblgen build 
performance!

Something that I've looked at every so often is the poor choice of 
containers - e.g. passing a const std::vector& around when ArrayRef<> 
would be a lot cheaper (no expensive iterator bounds checks....).

Another is using map/set everywhere - they are great when data is being 
parsed/collected, but once its sorted transfering to an array/vector 
could be a lot cheaper if really we spend more time sequentially 
iterating across the data many times.

Simon.

On 20/10/2020 23:31, Paul C. Anagnostopoulos via llvm-dev wrote:
> I just saw this post. I'm certainly looking for areas to improve. I will investigate the example you provided.
>
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