Pavel Yaskevich aa9b3d8474 [TypeChecker] SE-0213: Implement literal init via coercion ...

Implementation is as follows: In `preCheckExpression` try to
detect if there is `T(literal)` call in the AST, replace it with
implicit `literal as T`, while trying to form type-checked AST,
after constraint solving, restore source information and drop
unnecessary coercion expression.

Resolves: rdar://problem/17088188
Resolves: rdar://problem/39120081
Resolves: rdar://problem/23672697
Resolves: rdar://problem/40379985

2018-07-17 12:08:59 -07:00

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