schedule_rule.h

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 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
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 *
 *   http://www.apache.org/licenses/LICENSE-2.0
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 * 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
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#ifndef TVM_META_SCHEDULE_SCHEDULE_RULE_H_
#define TVM_META_SCHEDULE_SCHEDULE_RULE_H_

#include <tvm/ir/expr.h>
#include <tvm/node/reflection.h>
#include <tvm/runtime/container/array.h>
#include <tvm/runtime/container/map.h>
#include <tvm/runtime/container/optional.h>
#include <tvm/runtime/container/string.h>
#include <tvm/runtime/object.h>
#include <tvm/runtime/packed_func.h>
#include <tvm/tir/schedule/schedule.h>

namespace tvm {
namespace meta_schedule {

class TuneContext;

class ScheduleRuleNode : public runtime::Object {
 public:
  virtual ~ScheduleRuleNode() = default;

  void VisitAttrs(tvm::AttrVisitor* v) {}

  virtual void InitializeWithTuneContext(const TuneContext& context) = 0;

  virtual runtime::Array<tir::Schedule> Apply(const tir::Schedule& sch,
                                              const tir::BlockRV& block) = 0;

  static constexpr const char* _type_key = "meta_schedule.ScheduleRule";
  TVM_DECLARE_BASE_OBJECT_INFO(ScheduleRuleNode, Object);
};

class PyScheduleRuleNode : public ScheduleRuleNode {
 public:
  using FInitializeWithTuneContext = runtime::TypedPackedFunc<void(const TuneContext&)>;
  using FApply =
      runtime::TypedPackedFunc<Array<tir::Schedule>(const tir::Schedule&, const tir::BlockRV&)>;
  using FAsString = runtime::TypedPackedFunc<String()>;

  FInitializeWithTuneContext f_initialize_with_tune_context;
  FApply f_apply;
  FAsString f_as_string;

  void VisitAttrs(tvm::AttrVisitor* v) {
    // `f_initialize_with_tune_context` is not visited
    // `f_apply` is not visited
    // `f_as_string` is not visited
  }

  void InitializeWithTuneContext(const TuneContext& context) final;
  Array<tir::Schedule> Apply(const tir::Schedule& sch, const tir::BlockRV& block) final;

  static constexpr const char* _type_key = "meta_schedule.PyScheduleRule";
  TVM_DECLARE_FINAL_OBJECT_INFO(PyScheduleRuleNode, ScheduleRuleNode);
};

class ScheduleRule : public runtime::ObjectRef {
 public:
  TVM_DLL static ScheduleRule AutoInline(bool into_producer,          //
                                         bool into_consumer,          //
                                         bool inline_const_tensor,    //
                                         bool disallow_if_then_else,  //
                                         bool require_injective,      //
                                         bool require_ordered,        //
                                         Optional<Array<String>> disallow_op);
  TVM_DLL static ScheduleRule MultiLevelTiling(String structure,                             //
                                               Optional<Array<String>> tile_binds,           //
                                               Optional<Integer> max_innermost_factor,       //
                                               Optional<Array<Integer>> vector_load_lens,    //
                                               Optional<Map<String, ObjectRef>> reuse_read,  //
                                               Optional<Map<String, ObjectRef>> reuse_write);

  TVM_DLL static ScheduleRule MultiLevelTilingWithIntrin(
      String intrin_name, String structure, Optional<Array<String>> tile_binds,
      Optional<Integer> max_innermost_factor, Optional<Array<Integer>> vector_load_lens,
      Optional<Map<String, ObjectRef>> reuse_read, Optional<Map<String, ObjectRef>> reuse_write);

  TVM_DLL static ScheduleRule AddRFactor(int max_jobs_per_core,  //
                                         Optional<Integer> max_innermost_factor);
  TVM_DLL static ScheduleRule CrossThreadReduction(Array<Integer> thread_extents);
  TVM_DLL static ScheduleRule RandomComputeLocation();
  TVM_DLL static ScheduleRule ParallelizeVectorizeUnroll(int max_jobs_per_core,            //
                                                         int max_vectorize_extent,         //
                                                         Array<Integer> unroll_max_steps,  //
                                                         bool unroll_explicit);
  TVM_DLL static ScheduleRule AutoBind(int max_threadblocks, Array<Integer> thread_extents);
  TVM_DLL static ScheduleRule PyScheduleRule(
      PyScheduleRuleNode::FInitializeWithTuneContext f_initialize_with_tune_context,  //
      PyScheduleRuleNode::FApply f_apply,                                             //
      PyScheduleRuleNode::FAsString f_as_string);
  TVM_DEFINE_MUTABLE_OBJECT_REF_METHODS(ScheduleRule, ObjectRef, ScheduleRuleNode);
};

}  // namespace meta_schedule
}  // namespace tvm

#endif  // TVM_META_SCHEDULE_SCHEDULE_RULE_H_