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[Shepherd] Add documentation to _DependenceToken #28417

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Merged
CodaFi merged 1 commit into from
Nov 21, 2019
Merged

[Shepherd] Add documentation to _DependenceToken #28417

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8 changes: 7 additions & 1 deletion stdlib/public/core/ArrayShared.swift
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Expand Up @@ -9,8 +9,14 @@
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//

/// This type is used as a result of the _checkSubscript call to associate the
/// This type is used as a result of the `_checkSubscript` call to associate the
/// call with the array access call it guards.
///
/// In order for the optimizer see that a call to `_checkSubscript` is semantically
/// associated with an array access, a value of this type is returned and later passed
/// to the accessing function. For example, a typical call to `_getElement` looks like
/// let token = _checkSubscript(index, ...)
/// return _getElement(index, ... , matchingSubscriptCheck: token)
@frozen
public struct _DependenceToken {
@inlinable
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