mbs-octoml commented on a change in pull request #9038: URL: https://github.com/apache/tvm/pull/9038#discussion_r717094674
########## File path: src/relay/op/memory/device_copy.cc ########## @@ -0,0 +1,117 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +/*! + * \file relay/op/memory/device_copy.cc + * \brief Helpers for working with "device_copy" attributes. + */ + +#include "./device_copy.h" + +#include <tvm/relay/attrs/device_copy.h> +#include <tvm/relay/expr.h> +#include <tvm/relay/op.h> +#include <tvm/relay/op_attr_types.h> +#include <tvm/topi/elemwise.h> + +#include "../../transforms/infer_layout_utils.h" +#include "../type_relations.h" + +namespace tvm { +namespace relay { + +// relay.device_copy +TVM_REGISTER_NODE_TYPE(DeviceCopyAttrs); + +const Op& DeviceCopyOp() { + static const Op& op = Op::Get("device_copy"); + return op; +} + +Expr DeviceCopy(Expr expr, DLDeviceType src_dev_type, DLDeviceType dst_dev_type) { + auto attrs = make_object<DeviceCopyAttrs>(); + attrs->src_dev_type = src_dev_type; + attrs->dst_dev_type = dst_dev_type; + Span span = expr->span; + return Call(DeviceCopyOp(), {std::move(expr)}, Attrs(attrs), /*type_args=*/{}, span); +} + +Expr OptDeviceCopy(Expr expr, DLDeviceType src_dev_type, DLDeviceType dst_dev_type) { + if (src_dev_type == dst_dev_type) { + return expr; + } + ICHECK_NE(src_dev_type, kInvalidDeviceType); + ICHECK_NE(dst_dev_type, kInvalidDeviceType); + return DeviceCopy(expr, src_dev_type, dst_dev_type); +} + +TVM_REGISTER_GLOBAL("relay.op._make.device_copy") + .set_body_typed([](Expr expr, int src_dev_type, int dst_dev_type) { + return DeviceCopy(expr, static_cast<DLDeviceType>(src_dev_type), + static_cast<DLDeviceType>(dst_dev_type)); + }); + +RELAY_REGISTER_OP("device_copy") + .describe(R"code( +Copy data from one tensor to another. The source and destination might be Review comment: This should show up as a branch from memory.cc, sorry. The operator is not new, and can appear is user programs. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
