Pavel Yaskevich 298bf2aed4 [CSBindings] Cleanup literal binding inference ...

Don't attempt to store literal bindings directly to `PotentialBindings`
since they might get superseded by non-literal bindings deduced from
other constraints, also don't attempt to check literal protocol conformance
on type variables or member types since such types would always end-up
returning trivial conformance which results in removal of viable literal types.

Resolves: rdar://problem/38535743

2018-03-27 22:51:37 -07:00

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