failed to legalize operation 'onnx.Einsum'

[Hemaprasannakc]

While compiling the detr-DocLayNet model , zDLC compilation fails with failed to legalize operation 'onnx.Einsum'

podman run --rm -v ${ZDLC_MODEL_DIR}:/workdir:z ${ZDLC_IMAGE} --EmitLib --O3 --onnx-op-stats=JSON -march=z17 --mtriple=s390x-ibm-loz ${ZDLC_MODEL_NAME}.onnx [1/6] Wed Aug 20 05:45:53 2025 (0s) Importing ONNX Model to MLIR Module from "cmarkea_detr_layout.onnx" [2/6] Wed Aug 20 05:45:53 2025 (0s) Compiling and Optimizing MLIR Module failed to legalize operation 'onnx.Einsum' { "func.func" : 1, "func.return" : 1, "onnx.Add" : 242, "onnx.Cast" : 7, "onnx.Concat" : 288, "onnx.Constant" : 967, "onnx.Conv" : 26, "onnx.Cos" : 2, "onnx.CumSum" : 2, "onnx.Dim" : 258, "onnx.Div" : 4, "onnx.Einsum" : 1, "onnx.Expand" : 8, "onnx.Flatten" : 1, "onnx.Gather" : 1, "onnx.LayerNormalization" : 36, "onnx.MatMul" : 175, "onnx.MaxPoolSingleOut" : 1, "onnx.Mul" : 97, "onnx.NoValue" : 1, "onnx.Not" : 1, "onnx.Relu" : 68, "onnx.Reshape" : 270, "onnx.Resize" : 4, "onnx.Sigmoid" : 1, "onnx.Sin" : 2, "onnx.Slice" : 11, "onnx.Softmax" : 19, "onnx.Squeeze" : 18, "onnx.Sub" : 2, "onnx.Tile" : 5, "onnx.Transpose" : 94, "onnx.Unsqueeze" : 80, "onnx.Where" : 3 }

But the same when ran with--EmitONNXIR is not failing.

podman run --rm -v ${ZDLC_MODEL_DIR}:/workdir:z ${ZDLC_IMAGE} --EmitONNXIR --O3 --onnx-op-stats=JSON -march=z17  --mtriple=s390x-ibm-loz ${ZDLC_MODEL_NAME}.onnx

Warning: --onnx-op-stats requires targets like --EmitMLIR, --EmitLLVMIR, or binary-generating emit commands.

[1/3] Wed Aug 20 05:46:48 2025 (0s) Importing ONNX Model to MLIR Module from "cmarkea_detr_layout.onnx"
[2/3] Wed Aug 20 05:46:48 2025 (0s) Compiling and Optimizing MLIR Module
[3/3] Wed Aug 20 05:46:49 2025 (1s) Compilation completed