Add forward/reverse mode counterpart helpers to EnzymeCore#3302
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rsenne wants to merge 5 commits into
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wsmoses
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Jul 9, 2026
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As discussed here, I've implemented the forward/reverse counterparts into EnzymeCore so that upstream changes will not break the usage in DI.
This adds two unexported helpers alongside the existing
Split``/Combined:forward_counterpart(::Mode): mapsReverseMode/ReverseModeSplitto aForwardMode, preservingReturnPrimal,ABI,ErrIfFuncWritten,RuntimeActivity, andStrongZero(dropsHolomorphicand split-specific parameters). Identity onForwardMode.reverse_counterpart(::Mode): mapsForwardModeto aReverseModepreserving the same settings, withHolomorphic = false. Identity onReverseMode/ReverseModeSplit.Happy to rename or adjust semantics as you see fit.
Also bumpsEnzymeCoreto 0.8.22.cc @wsmoses @gdalle