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[ONNX][MLIR] add Identity op support (#2754)

pull/2592/merge snapshot-20240117.1086
Phaneesh Barwaria 2024-01-16 19:06:54 +05:30 committed by GitHub
parent a8538e1e3f
commit eed144bfbc
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2 changed files with 21 additions and 0 deletions
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13
lib/Conversion/TorchOnnxToTorch/DefaultDomainGtoP.cpp
View File

@ -560,4 +560,17 @@ void mlir::torch::onnx_c::populateDefaultDomainGtoP(
binder.op, resultType, lhs, rhs);
return success();
});
patterns.onOp(
"Identity", 14, [](OpBinder binder, ConversionPatternRewriter &rewriter) {
Torch::ValueTensorType resultType;
Value tensor;
if (binder.tensorOperand(tensor) ||
binder.tensorResultType(resultType)) {
return failure();
}
Value noneVal = rewriter.create<Torch::ConstantNoneOp>(binder.getLoc());
rewriter.replaceOpWithNewOp<Torch::AtenCloneOp>(
binder.op, resultType, tensor, /*memory_format=*/noneVal);
return success();
});
}

8
test/Conversion/TorchOnnxToTorch/simple_ops_g_to_p.mlir
View File

@ -456,3 +456,11 @@ func.func @test_not_2d(%arg0: !torch.vtensor<[3,4],i1>) -> !torch.vtensor<[3,4],
%0 = torch.operator "onnx.Or"(%arg0, %arg1) : (!torch.vtensor<[3,4],i1>, !torch.vtensor<[3,4],i1>) -> !torch.vtensor<[3,4],i1>
return %0 : !torch.vtensor<[3,4],i1>
}
// CHECK-LABEL: func.func @test_identity
func.func @test_identity(%arg0: !torch.vtensor<[3,4], f32>) -> !torch.vtensor<[3,4], f32> attributes {torch.onnx_meta.ir_version = 14 : si64, torch.onnx_meta.opset_version = 14 : si64, torch.onnx_meta.producer_name = "backend-test", torch.onnx_meta.producer_version = ""} {
// CHECK: %[[NONE:.*]] = torch.constant.none
// CHECK: %0 = torch.aten.clone %arg0, %[[NONE]] : !torch.vtensor<[3,4],f32>, !torch.none -> !torch.vtensor<[3,4],f32>
%0 = torch.operator "onnx.Identity"(%arg0) : (!torch.vtensor<[3,4], f32>) -> !torch.vtensor<[3,4], f32>
return %0 : !torch.vtensor<[3,4], f32>
}