Slava Pestov d03ff29a46 RequirementMachine: Protocol atoms order before associated type atoms ...

If you have a same-type requirement like 'Self.Foo == Self' inside a
protocol P, we add a rewrite rule:

[P].Foo => [P]

Simplification turns this into

[P:Foo] => [P]

Previously, the order was backwards so we would end up with

[P] => [P:Foo]

Which would mess up the conformance information in the equivalence class map.

2021-06-29 13:09:11 -04:00

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