[AutoDiff] make differentiable array ops inlinable #31704
Merged
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A solver in https://github.com/borglab/SwiftFusion that had some
differentiableMap
anddifferentiableReduce
in its inner loop was spending ~50% of its time in these two operations. Switching the solver to usemap
andreduce
changed this to ~0%.Making
differentiableMap
anddifferentiableReduce
@inlinable
should fix this. (Though I haven't actually built a toolchain to confirm. This isn't urgent enough that I want to spend time building a toolchain to confirm it, so I'll just wait until this makes its way into a toolchain before confirming.)