SIL: Don't DFE functions referenced from KeyPath patterns. #9194
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Fixes rdar://problem/31776015.
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@swift-ci Please test |
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Here's the 4.0 branch version, @eeckstein. |
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Explanation: Adds awareness of KeyPath instructions to the DeadFunctionElimination pass, so that accessor functions referenced by key path literals do not get optimized away.
Scope: Fixes use of key paths in optimized builds
Issue: rdar://problem/31776015
Risk: Low
Testing: Swift CI