Commit 04348511 authored by Nick Desaulniers's avatar Nick Desaulniers Committed by TensorFlower Gardener
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[XLA] Add reproducer that shows perf issues in... 

[XLA] Add reproducer that shows perf issues in HloDataflowAnalysis::UpdateTupleValueSet, then optimize that method.

HloDataflowAnalysis::UpdateTupleValueSet starts to show up in profiles for while bodies that have many GetTupleElement nodes.

Use a set to keep track of which HloInstructions we need to propagate DFA for.

PiperOrigin-RevId: 185739365
parent c5c0ec07
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