Commit 8dfb7532 authored by A. Unique TensorFlower's avatar A. Unique TensorFlower Committed by TensorFlower Gardener
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Improve the implementation of HloSharding::GetSubSharding 

The new implementation iterates the ShapeIndex and the flat HloSharding
directly instead of constructing a ShapeTree what provides a significant
performance benefit for large tuple shapes.

PiperOrigin-RevId: 210705719
parent a15f91d2
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