global_info.h

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/*
 * 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.
 */
 
#ifndef TVM_IR_GLOBAL_INFO_H_
#define TVM_IR_GLOBAL_INFO_H_
 
#include <tvm/ir/expr.h>
#include <tvm/target/target.h>
 
namespace tvm {
 
using MemoryScope = String;
 
class GlobalInfoNode : public Object {
 public:
  static constexpr const char* _type_key = "GlobalInfo";
  static constexpr const bool _type_has_method_sequal_reduce = true;
  static constexpr const bool _type_has_method_shash_reduce = true;
  TVM_DECLARE_BASE_OBJECT_INFO(GlobalInfoNode, Object);
};
 
class GlobalInfo : public ObjectRef {
 public:
  TVM_DEFINE_OBJECT_REF_METHODS(GlobalInfo, ObjectRef, GlobalInfoNode);
};
 
class VDeviceNode : public GlobalInfoNode {
 public:
  Target target;
  int vdevice_id;
  MemoryScope memory_scope;
  void VisitAttrs(tvm::AttrVisitor* v) {
    v->Visit("target", &target);
    v->Visit("vdevice_id", &vdevice_id);
    v->Visit("memory_scope", &memory_scope);
  }
 
  TVM_DLL bool SEqualReduce(const VDeviceNode* other, SEqualReducer equal) const {
    return equal(target, other->target) && equal(vdevice_id, other->vdevice_id) &&
           equal(memory_scope, other->memory_scope);
  }
 
  TVM_DLL void SHashReduce(SHashReducer hash_reduce) const {
    hash_reduce(target);
    hash_reduce(vdevice_id);
    hash_reduce(memory_scope);
  }
  static constexpr const char* _type_key = "VDevice";
  TVM_DECLARE_FINAL_OBJECT_INFO(VDeviceNode, GlobalInfoNode);
};
 
class VDevice : public GlobalInfo {
 public:
  TVM_DLL explicit VDevice(Target tgt, int dev_id, MemoryScope mem_scope);
  TVM_DEFINE_OBJECT_REF_METHODS(VDevice, GlobalInfo, VDeviceNode);
};
 
class DummyGlobalInfoNode : public GlobalInfoNode {
 public:
  void VisitAttrs(tvm::AttrVisitor* v) {}
  static constexpr const char* _type_key = "DummyGlobalInfo";
 
  TVM_DLL bool SEqualReduce(const DummyGlobalInfoNode* other, SEqualReducer equal) const {
    return true;
  }
 
  TVM_DLL void SHashReduce(SHashReducer hash_reduce) const {}
  TVM_DECLARE_FINAL_OBJECT_INFO(DummyGlobalInfoNode, GlobalInfoNode);
};
 
class DummyGlobalInfo : public GlobalInfo {
 public:
  TVM_DEFINE_OBJECT_REF_METHODS(DummyGlobalInfo, GlobalInfo, DummyGlobalInfoNode);
};
 
}  // namespace tvm
 
#endif  // TVM_IR_GLOBAL_INFO_H_