Commit 5d013e9d authored by A. Unique TensorFlower's avatar A. Unique TensorFlower Committed by TensorFlower Gardener
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This CL avoids superfluous construction of backwards graphs for nested... 

This CL avoids superfluous construction of backwards graphs for nested function calls. It delays construction of backwards graph to when a tape is actually used to compute a gradient.

PiperOrigin-RevId: 222916814
parent b84cc997
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