[e2e][onnx][model] onnx.Pad

[PhaneeshB]

Failing Models:

• retinanet_resnet50_fpn_vaiq_int8
• KeypointRCNN_vaiq_int8

Run any of there models in SHARK-TestSuite with

cd e2eshark
python run.py --torchmlirbuild /path_to/torch-mlir/build  --ireebuild /path-to/iree-build --cachedir /path-to/model-cache-dir -r test-onnx --tolerance .001 .001 --mode onnx --report --tests  onnx/models/<MODEL_NAME>

Error:

retinanet_resnet50_fpn_vaiq_int8.default.torch-onnx.mlir:1067:13: error: failed to legalize operation 'torch.operator' that was explicitly marked illegal
    %1063 = torch.operator "onnx.Pad"(%895, %1062, %none) {torch.onnx.mode = "constant"} : (!torch.vtensor<[?,?,?],f32>, !torch.vtensor<[?],si64>, !torch.none) -> !torch.vtensor<[?,?,?],f32> 
            ^
retinanet_resnet50_fpn_vaiq_int8.default.torch-onnx.mlir:1067:13: note: see current operation: %3330 = "torch.operator"(%2572, %3329, %0) <{name = "onnx.Pad"}> {torch.onnx.mode = "constant"} : (!torch.vtensor<[?,?,?],f32>, !torch.vtensor<[?],si64>, !torch.none) -> !torch.vtensor<[?,?,?],f32>

KeypointRCNN_vaiq_int8.default.torch-onnx.mlir:1365:13: error: failed to legalize operation 'torch.operator' that was explicitly marked illegal
    %1361 = torch.operator "onnx.Pad"(%1041, %1360, %none) {torch.onnx.mode = "constant"} : (!torch.vtensor<[?,?,?],f32>, !torch.vtensor<[?],si64>, !torch.none) -> !torch.vtensor<[?,?,?],f32> 
            ^
KeypointRCNN_vaiq_int8.default.torch-onnx.mlir:1365:13: note: see current operation: %4411 = "torch.operator"(%3040, %4410, %0) <{name = "onnx.Pad"}> {torch.onnx.mode = "constant"} : (!torch.vtensor<[?,?,?],f32>, !torch.vtensor<[?],si64>, !torch.none) -> !torch.vtensor<[?,?,?],f32>

[PhaneeshB]

llvm/torch-mlir#3214
Landed, closing the issue