[mlir-hlo]The following operations cannot be legalized: tf.VariableV2

[GipsonLeo]

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System information

• TensorFlow version (you are using): 2.6.0
• Are you willing to contribute it (Yes/No): No, i want to but i don't know how to

Describe the feature and the current behavior/state. feature: lower the op tf.VariableV2/tf.VarHandleOp/tf.ReadVariableOp/tf.AssignVariableOp of tf.dialect into mlir-hlo or other dialect.

the current behavior: when i trying to do the translation as follow: tf-opt --tf-to-hlo-pipeline target-func.mlir -o target-mhlo.mlir i get the following error message: target-func.mlir:2:3: error: The following operations cannot be legalized: tf.Assign (count: 1); tf.AssignAdd (count: 1); tf.VariableV2 (count: 1). These legalization failure(s) may be due to missing TF to HLO lowerings and/or unsupported attributes, etc. func @main() attributes {tf.entry_function = {control_outputs = "Variable/Assign,AssignAdd", inputs = "", outputs = ""}} {

Will this change the current api? How? yes. convertion should be add to the file legalize_hlo_patterns.td or else

Who will benefit with this feature? MLIR users, all tensorflow IR users

Any Other info. is there any feature similar completed ？

[Venkat6871]

Hi,

Thank you for opening this issue. Since this issue has been open for a long time, the code/debug information for this issue may not be relevant with the current state of the code base.

The Tensorflow team is constantly improving the framework by fixing bugs and adding new features. We suggest you try the latest TensorFlow version with the latest compatible hardware configuration which could potentially resolve the issue. If you are still facing the issue, please create a new GitHub issue with your latest findings, with all the debugging information which could help us investigate.

Please follow the release notes to stay up to date with the latest developments which are happening in the Tensorflow space.

[github-actions[bot]]

This issue is stale because it has been open for 7 days with no activity. It will be closed if no further activity occurs. Thank you.

[github-actions[bot]]

This issue was closed because it has been inactive for 7 days since being marked as stale. Please reopen if you'd like to work on this further.