Stop pessimizing print performance for no reason. #14076
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As pointed out in Ole Begeman's blog: https://oleb.net/blog/2016/09/playground-print-hook/ The playground print hook is being initialized a a non-null noop hook, which causes the fast paths in the print functions to be unused, and forcing the creation of a tee stream for things that have nothing to do with playgrounds. It is sad that no one noticed this...
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@swift-ci please test and merge |
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@ole fyi. |
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@lattner Thanks! |
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As pointed out in Ole Begeman's blog:
https://oleb.net/blog/2016/09/playground-print-hook/
The playground print hook is being initialized a a non-null noop hook,
which causes the fast paths in the print functions to be unused, and
forcing the creation of a tee stream for things that have nothing to
do with playgrounds. It is sad that no one noticed this...