Markus Westerlind e00cdd7345 Improve time complexity of equality relations ... This PR adds a `UnificationTable` to the `TypeVariableTable` type which is used store information about variable equality instead of just storing them in a vector for later processing. By using a `UnificationTable` equality relations can be resolved in O(n) (for all realistic values of n) rather than O(n!) which can give massive speedups in certain cases (see combine as an example). Link to combine: https://github.com/Marwes/combine		2016-03-21 22:40:30 +01:00
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mod.rs	Improve time complexity of equality relations	2016-03-21 22:40:30 +01:00
tests.rs	apply rustfmt to librustc_data_structures, correcting rust-lang-nursery/rustfmt#836	2016-03-05 08:40:33 -05:00