[TRACKER] Onnx Op' Torch->Linalg Lowering

[vivekkhandelwal1]

Below is the list of Onnx Ops for which Onnx->Torch lowering exists but they fail during Torch->Linag lowering phase. The aim is to prioritize these ops based on the models that are affected. If you're working on any of these ops then please create a tracker issue for the same and add your name to the owner.

Repro Instructions:
In order to reproduce the issue just take out the unit test for the concerned op from any of these files:

• https://github.com/llvm/torch-mlir/blob/main/test/Conversion/TorchOnnxToTorch/simple_ops_a_to_f.mlir
• https://github.com/llvm/torch-mlir/blob/main/test/Conversion/TorchOnnxToTorch/simple_ops_g_to_p.mlir
• https://github.com/llvm/torch-mlir/blob/main/test/Conversion/TorchOnnxToTorch/simple_ops_q_to_z.mlir

and run the below command:

torch-mlir-opt --convert-torch-onnx-to-torch --torch-decompose-complex-ops -torch-backend-to-linalg-on-tensors-backend-pipeline --split-input-file test.mlir

Note: The list might not be exhaustive so if you find any such Onnx op which fails during Torch->Linalg lowering then please do add this to the tracker.

Op Name	Owner	Models Affected	Tracker Issue
CumSum	@marbre		#662, llvm/torch-mlir#2845
SplitToSequence
SequenceMap
CenterCropPad
RoiAlign
DeformConv
Optional
OptionalGetElement
NegativeLogLikelihoodLoss
Col2Im
MaxRoiPool
MaxUnpool
SequenceAt
SequenceErase
SequenceEmpty
SequenceInsert
SequenceConstruct
SequenceLength

[jinchen62]

@vivekkhandelwal1 Is this for the same issue as #450? Both are for the ops that have onnx->torch support but fail on torch->linalg.

[vivekkhandelwal1]

@vivekkhandelwal1 Is this for the same issue as #450? Both are for the ops that have onnx->torch support but fail on torch->linalg.

That was created way back for making the failing lit tests pass, the purpose was different. That issue now seems stale, I will close it for now.