[AutoDiff upstream] Add SIL derivative function type calculation. #29396
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Add `SILFunctionType::getAutoDiffDerivativeFunctionType`. It computes the derivative `SILFunctionType` for an "original" `SILFunctionType`, given: - Differentiability parameter indices - Differentiability result index - Derivative function kind - Derivative function generic signature (optional) - Other auxiliary parameters Add doc comments explaining typing rules, preconditions, and other details. Partially resolves TF-1124. Unblocks upstreaming other SIL differentiable programming infrastructure.
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rxwei
approved these changes
Jan 23, 2020
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@swift-ci Please test |
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@jckarter: would you like to review this PR, or suggest a reviewer? I'm asking you since you seem like a SIL code owner. This PR is part of our effort to upstream differentiable programming. It adds a utility function and should be relatively non-controversial. If there's no activity, I'll merge within a day to unblock progress. Happy to address feedback at any time! |
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Makes sense to me. |
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Add
SILFunctionType::getAutoDiffDerivativeFunctionType.It computes the derivative
SILFunctionTypefor an "original"SILFunctionType, given:Add doc comments explaining typing rules, preconditions, and other details.
Partially resolves TF-1124.
Unblocks upstreaming other SIL differentiable programming infrastructure.