Commit 375c1096 authored by Yunxing Dai's avatar Yunxing Dai Committed by TensorFlower Gardener
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[XLA] Introduce input/output alias config. 

- This CL intruduces input/output alias config in HLO module that allows any HLO pass to configure it. Once the alias_config is set, each backend needs to follow the contract during execution time to make sure the input and output are indeed aliased.

- Copy insertion / buffer assignment and alias analysis has been updated to correctly honor the config and avoid any possible liveness interference.

PiperOrigin-RevId: 216299501
parent d58712b7
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