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• Graydon Hoare’s swift-dev email: https://lists.swift.org/pipermail/swift-dev/Week-of-Mon-20171113/006001.html
• Compiler Performance doc: https://github.com/apple/swift/blob/master/docs/CompilerPerformance.md
• Brian Gesiak's swift-dev email: https://lists.swift.org/pipermail/swift-dev/Week-of-Mon-20171106/005934.html

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