【PaddlePaddle Hackathon 4】add paddle flip op

[Asthestarsfalll]

Details:

add flip operation in Paddle front end

Reverse the order of a n-D tensor along given axis in axis.

Tickets:

• ticket-id

Reference:

https://www.paddlepaddle.org.cn/documentation/docs/en/api/paddle/flip_en.html
https://github.com/PaddlePaddle/Paddle/blob/release/2.4/python/paddle/tensor/manipulation.py#L1327
https://github.com/PaddlePaddle/Paddle2ONNX/blob/develop/paddle2onnx/legacy/op_mapper/tensor.py#L2018

Test Result

[rkazants]

One comment left. Other LGTM.

[mvafin]

Looks good from my side, but would like to see approve from @ceciliapeng2011

[Asthestarsfalll]

@ceciliapeng2011 PTAL

[Asthestarsfalll]

@ceciliapeng2011 PTAL

[Asthestarsfalll]

@OpenVINO-dev-contest PTAL

[yuxu42]

@ceciliapeng2011 could you please review?

[openvino-comment-bot]

Can one of the admins verify this patch?

[itikhono]

@Asthestarsfalll I have a question here. flip is an alias of reverse, right? If so, why not map it using Reverse IR. refer to #17525

As I can see, Reverse op was deleted in opset2. We don't have this operator in opset2+
It's better to fix reverse op convertor (translator) to use ReverseSequence op or similar approach like in this PR if possible

[xczhai]

@Asthestarsfalll I have a question here. flip is an alias of reverse, right? If so, why not map it using Reverse IR. refer to #17525

As I can see, Reverse op was deleted in opset2. We don't have this operator in opset2+ It's better to fix reverse op convertor (translator) to use ReverseSequence op or similar approach like in this PR if possible

PD reverse op executes the same operation. It is better to unify the two mappings instead of two separate implement.

[itikhono]

@Asthestarsfalll I have a question here. flip is an alias of reverse, right? If so, why not map it using Reverse IR. refer to #17525

As I can see, Reverse op was deleted in opset2. We don't have this operator in opset2+ It's better to fix reverse op convertor (translator) to use ReverseSequence op or similar approach like in this PR if possible

PD reverse op executes the same operation. It is better to unify the two mappings instead of two separate implement.

Yes, I agree. But the current pd reverse op translator uses OV Reverse op that was deleted from officially supported opsets (from opset2 and later). We need to fix reverse op translator in this case

[xczhai]

@Asthestarsfalll I have a question here. flip is an alias of reverse, right? If so, why not map it using Reverse IR. refer to #17525

As I can see, Reverse op was deleted in opset2. We don't have this operator in opset2+ It's better to fix reverse op convertor (translator) to use ReverseSequence op or similar approach like in this PR if possible

PD reverse op executes the same operation. It is better to unify the two mappings instead of two separate implement.

Yes, I agree. But the current pd reverse op translator uses OV Reverse op that was deleted from officially supported opsets (from opset2 and later). We need to fix reverse op translator in this case

@Asthestarsfalll Hi, it is much appreciated if you can help unify reverse and flip implements together.

[Asthestarsfalll]

@Asthestarsfalll Hi, it is much appreciated if you can help unify reverse and flip implements together.

I will update code latter.