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swift-mirror/stdlib/core/Optional.swift
Joe Groff c556d92ccd SILGen: Implement codegen for lvalue ForceValueExprs. 
Add a set of _preconditionOptionalHasValue intrinsics that merely test that an optional has a case. Emit an lvalue ForceValueExpr as a physical lvalue, first asserting the precondition then projecting out the Some payload.

Swift SVN r20188
2014-07-18 22:49:49 +00:00

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