[AutoDiff] Generate transparent ossa reabstraction thunks. #33897
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@swift-ci Please test tensorflow |
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CI machines are down, but internal CI passed. Merging to unblock progress. |
dabrahams
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Sep 14, 2020
* 'tensorflow' of github.com:apple/swift: [AutoDiff] Generate transparent ossa reabstraction thunks. (swiftlang#33897)
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Cherry-pick of #33854 to
tensorflowbranch.Unblocks building tensorflow/swift-apis with forward-mode differentiation enabled.
Make the differentiation transform generate transparent, ossa
reabstraction thunks.
This enables these thunks to be inlined into other ossa functions (e.g.
generated VJP and pullback functions) during mandatory inlining.
Resolves TF-989.
Unblocks further autodiff-related optimizations: SR-13390.