Squashed commit

[Meta Schedule][M3c] Schedule Rules, Mutator & Postprocs (apache#485)

[Meta Schedule][M3c] PostOrderApply (apache#486)

Fix Post Order Apply (apache#490)

[MetaSchedule] Relay Integration (apache#489)

[M3c][Meta Schedule] Add Trace Correctness Test for PostOrderApply (apache#492)

Fix replay trace. (apache#493)

[M3c][Meta Schedule] Implement the Replay Func class. (apache#495)

[PR] Test script for meta-schedule task extraction. Interface to load… (apache#494)

[Meta Schedule Refactor] Get child blocks (apache#500)

Read-at && Write-at (apache#497)

[M3c][Meta Schedule] Measure Callbacks (apache#498)

[Bug] Fix Infinite Loop Caused When Calling Methods Not Overrided In PyClass (apache#496)

[MetaSchedule] Sample-Perfect-Tile (apache#501)

[MetaSchedule] TE Workloads (apache#502)

[TensorIR] GetProducer, GetConsumer (apache#506)

[MetaScheduleRefactor] Annotate&Unannotate (apache#505)

[MetaSchedule] Multi-Level-Tiling & Auto-Inline (apache#503)

[Tests] Add unittests for auto-inline and multi-level-tiling (apache#508)

[Meta Schedule] Minor Fixes (apache#507)

[MetaSchedule] Rewrite Cooperative-Fetching / Unbound-Block / Reduction-Block (apache#509)

[MetaSchedule] Rewrite Parallel-Vectorize-Unroll / Verify-GPU / Disallow-Dynamic-Loops (apache#499)

[Meta Schedule] Add Helper Function & Minor Modification (apache#512)

[MetaSchedule] Test for Rewrite Parallel-Vectorize-Unroll  (apache#513)

[Meta Schedule] Feature Extractor & Cost Model (apache#510)

Blockize & Tensorize (apache#514)

Layout Rewriting: Suggest-Index-Map (apache#520)

[MetaSchedule] Parallel-Vectorize-Unroll & Random-Compute-Location (apache#516)

[Meta Schedule] Per-Store-Feature (apache#521)

Add traced schedule for blockize & tensorize (apache#526)

[Meta Schedule] Add XGBoost Model & Random Model (apache#519)

User-Interface: Tune-TIR (apache#525)

User-Interface: Tune-TE (apache#527)

[Minor] More logging on python (apache#528)

Get CUDA tuning working (apache#529)

[MetaSchedule] TensorRT BYOC (apache#518)

[BugFix] LocalBuilder API (apache#531)

[Meta Schedule] Add Cost Model Update Measure Callback (apache#530)

[Bugfix] BuilderInput with default params (apache#532)

[MetaSchedule] Mutator-Tile-Size, Mutate-Parallel, Mutate-Unroll (apache#534)

[Meta Schedule] Evolutionary Search (apache#522)

[BugFix] Remove duplicated definition of MakeMultinomialSampler (apache#535)

[Meta Schedule] Fix some bugs (apache#537)

Initiate Experiments for CPU Performance Alignment with Ansor (apache#538)

[Meta Schedule] Tweak experiment scripts (apache#539)

[Meta Schedule] Initiate experiments on CUDA (apache#540)

[TIR][Schedule] Buffer transform (apache#523)

Auto Tensor Core (apache#524)

Working on Evo Search (apache#542)

[Meta Schedule] Add Replay Tuning Interface (apache#543)

Evolutionary Search on CPU (apache#544)

Misc improvement over the error message (apache#545)

[TIR][Schedule] Software pipelining (apache#533)

[Meta Schedule Refactor] fixing unit tests (apache#547)

[MetaSchedule] Mutator-Compute-Location (apache#548)

Misc Improvement of Evolutionary Search (apache#549)

Hotfix for software pipeline (apache#552)

Misc Improvement (apache#550)

[Cherry-Pick][TensorIR] Primitive "SetScope" (apache#9738) (apache#555)

Rule RFactor (apache#551)

[MemHammer] Rewrite Rules (apache#554)

[MetaSchedule] Schedule Rule: Cross-Thread Reduction (apache#556)

[MetaSchedule] Performance Alignment - NRM and SFM (CUDA) (apache#559)

[MetaSchedule] Perf Alignment - NRM on CUDA (apache#560)

[TIR] Reorder the block iters of the blocks generated by RFactor (apache#561)

Removing 2 unit tests for software pipelining (apache#562)

[MemHammer] Lower Pass + Unittests (apache#557)

Perf Align: Remove Auto-inline before Multi-level-tiling (apache#564)

Fix Sketch Generation Unittests (apache#565)

speed up VerifyGpuCode (apache#568)

[Performance Align] fixing codegen problems (apache#569)

[Meta schedule] improve search space (#1)

Hot fix for bound predicate (#3)

[Meta Schedule] Update Tune Relay (#4)

[Performance Align] fixing codegen problems (#5)

[PerfAlign] NRM & SFM on Raspi Aligned (#6)

[BugFix] Apply bound predicate directly to loops when possible (#12)

[BugFix] Fix CrossThreadReduction on CUDA (#13)

[MetaSchedule] Enable BertTuning with MetaScheduler (#11)

[Minor][MemHammer] Minor tweaks in code review (#14)

[Meta Schedule] Add customizable search space to PostOrderApply. (#16)

Fix cooperative fetching (#17)

Fixes for codegen (#18)

[Hotfix] A unittest (#19)

Fix for GRP sketch gen (#21)

Add threadIdx filtering in Multi-Level-Tiling and Verify-GPU-Code (#20)

[BugFix][TIR] Fix cross-thread reduction when single reduction loop with predicate (apache#10016) (#22)

[MemHammer][Refactor] Code Review (#15)

[Meta Schedule] Add Winograd Test for Customizable Search Space (#24)

Import & Cache Mechanism (#26)

[BugFix] Fix Winograd Test Script (#25)

Add task extraction & caching (#27)

A few fixes for task extraction (#28)

Co-authored-by: Siyuan Feng <Hzfengsy@sjtu.edu.cn>
Co-authored-by: Bohan Hou <32121147+spectrometerHBH@users.noreply.github.com>
Co-authored-by: Hongyi Jin <3231950289@qq.com>
Co-authored-by: Ruihang Lai <lairuihangdongdong@qq.com>
Co-authored-by: Junru Shao <junrushao1994@gmail.com>
Co-authored-by: Wuwei Lin <wuwei@apache.org>
Co-authored-by: Sunghyun Park <49998730+sunggg@users.noreply.github.com>
Co-authored-by: Xiyou Zhou <xiyou@octoml.ai>

.github/CODEOWNERS

@@ -1,158 +0,0 @@
-# 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.
-
-# Github code owners file
-# This file is used as a convenient tool to map
-# committers' areas of expertise and faciliate the review process.
-#
-# This may not be the non-comprehensive list and is meant to be
-# updated over time.
-
-# Per ASF policy, committer have global write permission.
-# We normally recommend committers to shepherd code in their area of expertise.
-*        @apache/tvm-committers
-
-# Order is important; the last matching pattern takes the most precedence.
-# The sub modules should be ordered first by depth.
-# Making sure we append new sub-module rules after exisiting modules rules.
-
-##############################
-# Top-level Fallbacks
-##############################
-include/**  @tqchen @jroesch @yzhliu @icemelon @junrushao1994 @comaniac @zhiics
-src/** @tqchen @jroesch @yzhliu @icemelon @junrushao1994 @comaniac @zhiics
-apps/** @tqchen @jroesch @yzhliu @icemelon @junrushao1994 @comaniac @zhiics
-python/** @tqchen @jroesch @yzhliu @icemelon @junrushao1994 @comaniac @zhiics
-
-# Thirdparty license audit
-3rdparty/**  @tqchen @jroesch
-licenses/**  @tqchen @jroesch
-
-# JVM language
-jvm/**   @yzhliu
-
-# Golang
-golang/** @srkreddy1238
-
-# WASM
-web/** @tqchen @jroesch
-
-# Docker
-docker/** @areusch @leandron @jroesch
-
-# Conda
-conda/** @tqchen @junrushao1994 @comaniac
-
-# CMake
-cmake/** @jroesch @tqchen @areusch @junrushao1994 @comaniac
-
-# rust bindings
-rust/** @jroesch @nhynes @nhynes
-
-# vta
-vta/**    @tmoreau89 @vegaluisjose
-
-# docs
-docs/**  @comaniac @junrushao1994 @tqchen @jroesch @areusch @yzhliu @merrymercy @icemelon
-tutorials/**  @comaniac @junrushao1994 @tqchen @jroesch @areusch @yzhliu @merrymercy @icemelon
-
-# tests
-tests/**  @comaniac @junrushao1994 @tqchen @jroesch @areusch @yzhliu @merrymercy @icemelon
-
-##############################
-# Specific modules
-##############################
-
-# automation related
-src/auto_scheduler/**  @merrymercy @jcf94 @comaniac @junrushao1994 @vinx13 @Hzfengsy
-include/tvm/auto_scheduler/**  @merrymercy @jcf94 @comaniac @junrushao1994 @vinx13 @Hzfengsy
-python/tvm/auto_scheduler/**  @merrymercy @jcf94 @comaniac @junrushao1994 @vinx13 @Hzfengsy
-
-python/tvm/autotvm/**  @merrymercy @jcf94 @comaniac @junrushao1994 @vinx13
-
-# node system and reflection
-src/node/**      @junrushao1994 @vinx13 @tqchen @jroesch @comaniac
-include/tvm/node/**      @junrushao1994 @vinx13 @tqchen @jroesch @comaniac
-
-# ir: Common IR
-src/ir/**      @junrushao1994 @vinx13 @tqchen @jroesch @comaniac
-include/tvm/ir/**      @junrushao1994 @vinx13 @tqchen @jroesch @comaniac
-python/tvm/ir/**      @junrushao1994 @vinx13 @tqchen @jroesch @comaniac
-
-# tir
-src/tir/**      @junrushao1994 @vinx13 @tqchen @kparzysz-quic @ZihengJiang @masahi @were @Hzfengsy
-include/tvm/tir/**      @junrushao1994 @vinx13 @tqchen @kparzysz-quic @ZihengJiang @masahi @were @Hzfengsy
-python/tvm/tir/**      @junrushao1994 @vinx13 @tqchen @kparzysz-quic @ZihengJiang @masahi @were @Hzfengsy
-
-# te
-src/te/**      @junrushao1994 @vinx13 @tqchen @kparzysz-quic @ZihengJiang @masahi @were
-include/tvm/te/**      @junrushao1994 @vinx13 @tqchen @kparzysz-quic @ZihengJiang @masahi @were
-python/tvm/te/**      @junrushao1994 @vinx13 @tqchen @kparzysz-quic @ZihengJiang @masahi @were
-
-# target
-src/target/**  @junrushao1994 @vinx13 @tqchen @kparzysz-quic @ZihengJiang @masahi
-include/tvm/target/**  @junrushao1994 @vinx13 @tqchen @kparzysz-quic @ZihengJiang @masahi
-python/tvm/target/**  @junrushao1994 @vinx13 @tqchen @kparzysz-quic @ZihengJiang @masahi
-
-# arith: Arithmetic module and simplifiers
-src/arith/** @tqchen @junrushao1994 @vinx13
-include/tvm/arith/** @tqchen @junrushao1994 @vinx13
-python/tvm/arith/** @tqchen @junrushao1994 @vinx13
-
-# parser
-src/parser/** @jroesch @slyubomirsky
-
-# runtime
-src/runtime/**  @vinx13 @tqchen @FronzenGene @liangfu @areusch @tmoreau89 @ajtulloch @masahi @kazum @ZihengJiang  @junrushao1994
-include/tvm/runtime/**  @vinx13 @tqchen @FronzenGene @liangfu @areusch @tmoreau89 @ajtulloch @masahi @kazum @ZihengJiang  @junrushao1994
-python/tvm/runtime/**  @vinx13 @tqchen @FronzenGene @liangfu @areusch @tmoreau89 @ajtulloch @masahi @kazum @ZihengJiang  @junrushao1994
-
-# runtime/micro
-src/runtime/micro/** @areusch @liangfu @tmoreau89 @manupa-arm
-src/runtime/crt/** @areusch @liangfu @tmoreau89 @manupa-arm
-include/tvm/runtime/crt/** @areusch @liangfu @tmoreau89 @manupa-arm
-include/tvm/runtime/micro/** @areusch @liangfu @tmoreau89 @manupa-arm
-python/tvm/micro/** @areusch @liangfu @tmoreau89 @manupa-arm
-
-# relay
-src/relay/** @jroesch @slyubomirsky @icemelon @MarisaKirisame @ZihengJiang @yzhliu @vinx13 @mbrookhart @jwfromm @zhiics @anijain2305 @wweic @eqy @junrushao1994
-include/tvm/relay/** @jroesch @slyubomirsky @icemelon @MarisaKirisame @ZihengJiang @yzhliu @vinx13 @mbrookhart @jwfromm @zhiics @anijain2305 @wweic @eqy @junrushao1994
-python/tvm/relay/** @jroesch @slyubomirsky @icemelon @MarisaKirisame @ZihengJiang @yzhliu @vinx13 @mbrookhart @jwfromm @zhiics @anijain2305 @wweic @eqy @junrushao1994
-
-
-# relay/qnn
-src/relay/qnn/**  @jwfromm @anijain2305 @ZihengJiang
-inlcude/tvm/relay/qnn/**  @jwfromm @anijain2305 @ZihengJiang
-python/tvm/relay/qnn/**  @jwfromm @anijain2305 @ZihengJiang
-
-# relay/backend/contrib: BYOC
-src/relay/backend/contrib/** @zhiics @trevor-m @comaniac @mbaret @manupa-arm
-
-# relay/frontends
-python/tvm/relay/frontend/**  @jwfromm @mbrookhart @srkreddy1238 @siju-samuel @Huyuwei @hlu1 @kazum @PariksheetPinjari909
-
-# topi: Operator definitions
-src/topi/**  @Laurawly @Huyuwei @kevinthesun @jwfromm @vinx13 @masahi @FronzenGene @yzhliu @mbrookhart @ZihengJiang @jcf94
-include/tvm/topi/**  @Laurawly @Huyuwei @kevinthesun @jwfromm @vinx13 @masahi @FronzenGene @yzhliu @mbrookhart @ZihengJiang @jcf94
-python/tvm/topi/**  @Laurawly @Huyuwei @kevinthesun @jwfromm @vinx13 @masahi @FronzenGene @yzhliu @mbrookhart @ZihengJiang @jcf94
-
-
-# tvm/driver/
-python/tvm/driver/**  @leandron @jwfromm @tqchen @jroesch
-
-# tvm/driver/tvmc
-python/tvm/driver/tvmc/**  @leandron @jwfromm

include/tvm/arith/int_set.h

@@ -169,6 +169,14 @@ Map<Var, IntSet> ConvertDomMap(const std::unordered_map<const VarNode*, IntSet>&
  * \return An integer set that can cover all the possible values of e.
  */
 IntSet EvalSet(PrimExpr e, const Map<IterVar, IntSet>& dom_map);
+/*!
+ * \brief Same as EvalSet, but takes Map<Var, IntSet>
+ *
+ * \param e The expression to be evaluated.
+ * \param dom_map The domain of each variable.
+ * \return An integer set that can cover all the possible values of e.
+ */
+IntSet EvalSet(PrimExpr e, const Map<Var, IntSet>& dom_map);
 /*!
  * \brief Same as EvalSet, but takes unordered_map
  *
@@ -177,6 +185,15 @@ IntSet EvalSet(PrimExpr e, const Map<IterVar, IntSet>& dom_map);
  * \return An integer set that can cover all the possible values of e.
  */
 IntSet EvalSet(PrimExpr e, const std::unordered_map<const tir::VarNode*, IntSet>& dom_map);
+/*!
+ * \brief Same as EvalSet, but takes Array<PrimExpr>
+ *
+ * \param exprs The expressions to be evaluated.
+ * \param dom_map The domain of each variable.
+ * \return An array of integer sets that can cover all the possible values.
+ */
+Array<IntSet> EvalSet(const Array<PrimExpr>& exprs, const Map<Var, IntSet>& dom_map);
+
 /*!
  * \brief Find an symbolic integer set that contains is union over
  *  all the possible conditional values in dom_map.

include/tvm/meta_schedule/builder.h

@@ -32,7 +32,7 @@ class BuilderInputNode : public runtime::Object {
   IRModule mod;
   /*! \brief The target to be built for. */
   Target target;
-  /*! \brief The optional parameters used for build */
+  /*! \brief Parameters for Relay build module. */
   Optional<Map<String, runtime::NDArray>> params;
 
   void VisitAttrs(tvm::AttrVisitor* v) {
@@ -55,7 +55,7 @@ class BuilderInput : public runtime::ObjectRef {
    * \brief Constructor of BuilderInput.
    * \param mod The IRModule to be built.
    * \param target The target to be built for.
-   * \param params The optional parameters used for build
+   * \param params Parameters for Relay build module.
    */
   TVM_DLL explicit BuilderInput(IRModule mod, Target target,
                                 Optional<Map<String, runtime::NDArray>> params = NullOpt);

include/tvm/meta_schedule/schedule_rule.h

@@ -137,6 +137,7 @@ class ScheduleRule : public runtime::ObjectRef {
    * \param tile_binds For each level of tiles, which thread axis it is bound to. Recommended:
    * - NullOpt on CPU
    * - [blockIdx.x, vthread.x, threadIdx.x] on GPU
+   * \param use_tensor_core Whether to apply tensor core wmma intrinsic for the computation
    * \param max_innermost_factor The maximum size of the innermost factor. NullOpt means no limit
    * \param vector_load_lens The length of vector lane in vectorized cooperative fetching.
    * NullOpt means disable vectorization
@@ -146,6 +147,7 @@ class ScheduleRule : public runtime::ObjectRef {
    */
   TVM_DLL static ScheduleRule MultiLevelTiling(String structure,                             //
                                                Optional<Array<String>> tile_binds,           //
+                                               bool use_tensor_core,                         //
                                                Optional<Integer> max_innermost_factor,       //
                                                Optional<Array<Integer>> vector_load_lens,    //
                                                Optional<Map<String, ObjectRef>> reuse_read,  //

include/tvm/meta_schedule/tune_context.h

@@ -82,6 +82,8 @@ class TuneContextNode : public runtime::Object {
     v->Visit("rand_state", &rand_state);
     v->Visit("num_threads", &num_threads);
     v->Visit("is_stopped", &is_stopped);
+    v->Visit("builder_results", &builder_results);
+    v->Visit("runner_futures", &runner_futures);
     v->Visit("measure_candidates", &measure_candidates);
   }
 

include/tvm/tir/function.h

@@ -187,6 +187,65 @@ class LinkedParam : public ObjectRef {
   TVM_DEFINE_OBJECT_REF_COW_METHOD(LinkedParamNode);
 };
 
+/*! \brief A mapping from multi-dimensional indices to another set of multi-dimensional indices */
+class IndexMapNode : public Object {
+ public:
+  /*! \brief The source indices */
+  Array<Var> src_iters;
+  /*! \brief The target indices */
+  Array<PrimExpr> tgt_iters;
+
+  void VisitAttrs(tvm::AttrVisitor* v) {
+    v->Visit("src_iters", &src_iters);
+    v->Visit("tgt_iters", &tgt_iters);
+  }
+
+  /*!
+   * \brief Take `inputs` as the source indices and return the corresponding target indices.
+   * \param inputs The source indices.
+   * \return The target indices.
+   */
+  Array<PrimExpr> Apply(const Array<PrimExpr>& inputs) const;
+
+  /*!
+   * \brief Map a shape to the output space
+   * \param shape The shape in the source space
+   * \return The shape in the target space
+   */
+  Array<PrimExpr> MapShape(const Array<PrimExpr>& shape) const;
+
+  /*!
+   * \brief Convert to string representation in Python.
+   * \return The stringified lambda expression in Python.
+   */
+  String ToPythonString() const;
+
+  static constexpr const char* _type_key = "tir.IndexMap";
+  TVM_DECLARE_FINAL_OBJECT_INFO(IndexMapNode, Object);
+};
+
+/*!
+ * \brief Managed reference to IndexMapNode.
+ * \sa IndexMapNode
+ */
+class IndexMap : public ObjectRef {
+ public:
+  /*!
+   * \brief Constructor.
+   * \param src_iters The source indices.
+   * \param tgt_iters The target indices.
+   */
+  explicit IndexMap(Array<Var> src_iters, Array<PrimExpr> tgt_iters);
+  /*!
+   * \brief Create an index map from a packed function
+   * \param ndim The number of dimensions
+   * \param func The function to be applied
+   * \return The created index map
+   */
+  static IndexMap FromFunc(int ndim, runtime::TypedPackedFunc<Array<PrimExpr>(Array<Var>)> func);
+  TVM_DEFINE_OBJECT_REF_METHODS(IndexMap, ObjectRef, IndexMapNode);
+};
+
 /*!
  * \brief Tensor intrinsics for tensorization
  */

include/tvm/tir/schedule/schedule.h

@@ -355,6 +355,11 @@ class ScheduleNode : public runtime::Object {
    */
   virtual BlockRV CacheWrite(const BlockRV& block_rv, int write_buffer_index,
                              const String& storage_scope) = 0;
+  /******** Schedule: Data movement ********/
+  virtual BlockRV ReadAt(const LoopRV& loop_rv, const BlockRV& block_rv, int read_buffer_index,
+                         const String& storage_scope) = 0;
+  virtual BlockRV WriteAt(const LoopRV& loop_rv, const BlockRV& block_rv, int write_buffer_index,
+                          const String& storage_scope) = 0;
   /******** Schedule: Compute location ********/
   /*!
    * \brief Move a producer block under the specific loop, and regenerate the
@@ -521,6 +526,21 @@ class ScheduleNode : public runtime::Object {
    */
   virtual void Unannotate(const BlockRV& block_rv, const String& ann_key) = 0;
 
+  /******** Schedule: Layout transformation ********/
+  /*!
+   * \brief Apply a transformation represented by IndexMap to buffer
+   * \details The indices and the access region to the target buffer is transformed by the given
+   * index_map. The index_map is used to infer the new shape of the buffer. Buffer must be either
+   * a function parameter, or allocated in a block (it cannot be a buffer subregion created via
+   * 'match_buffer').
+   * \param block_rv The block that accesses the target buffer.
+   * \param buffer_index The index of the buffer in block's read or write region.
+   * \param is_write_index Whether the buffer_index is the index of the block's write region.
+   * \param index_map The transformation to apply.
+   */
+  virtual void TransformLayout(const BlockRV& block_rv, int buffer_index, bool is_write_index,
+                               const IndexMap& index_map) = 0;
+
   /******** Schedule: Misc ********/
   /*! \brief A no-op that marks the start of postprocessing phase of scheduling */
   virtual void EnterPostproc() = 0;

include/tvm/tir/stmt.h

@@ -1224,7 +1224,7 @@ class BlockRealize : public Stmt {
   TVM_DEFINE_OBJECT_REF_COW_METHOD(BlockRealizeNode);
 };
 
-/*! \brief namespace of possible attribute sin AttrStmt.attr_key */
+/*! \brief namespace of possible attributes in AttrStmt.attr_key */
 namespace attr {
 // The above attr does not pass to ir stage.
 /*! \brief Mark launching extent of thread, used by device API. */
@@ -1394,6 +1394,54 @@ constexpr const char* meta_schedule_unroll_explicit = "meta_schedule.unroll_expl
 /*! \brief Mark auto-unroll setting on the block. */
 constexpr const char* meta_schedule_unroll_implicit = "meta_schedule.unroll_implicit";
 
+/*!
+ * \brief Mark that the block need to add predicate for block var bounds during lowering
+ */
+constexpr const char* require_block_var_bound_predicate = "require_bound_predicate";
+
+/*!
+ * \brief Mark that the block should be further rewritten using tensorization.
+ */
+constexpr const char* meta_schedule_auto_tensorize = "meta_schedule.auto_tensorize";
+
+/*! \brief Mark that tensor core is enabled in the PrimExpr */
+constexpr const char* meta_schedule_tensor_core_enabled = "meta_schedule.tensor_core_enabled";
+
+/*!
+ * \brief Mark a block as generated by cache_read or cache_write block.
+ * 0 means cache_read; 1 means cache_write.
+ * \sa meta_schedule_cache_type_read
+ * \sa meta_schedule_cache_type_write
+ */
+constexpr const char* meta_schedule_cache_type = "meta_schedule.cache_type";
+
+/*! \sa meta_schedule_cache_type */
+constexpr const int meta_schedule_cache_type_read = 0;
+
+/*! \sa meta_schedule_cache_type */
+constexpr const int meta_schedule_cache_type_write = 1;
+
+/*! \brief Mark the scope of the software pipeline */
+constexpr const char* software_pipeline_scope = "software_pipeline_scope";
+
+/*! \brief Mark the stage of a statement in the software pipeline */
+constexpr const char* software_pipeline_stage = "software_pipeline_stage";
+
+/*! \brief Mark the order of a statement in the software pipeline */
+constexpr const char* software_pipeline_order = "software_pipeline_order";
+
+/*! \brief Mark the stage of the result of the software pipeline lowering. This is used to specify
+ * the behavior of nested software pipelines. Should be a 3-tuple consisting of the stage of the
+ * prologue, the body, and the epilogue of the software pipeline.
+ */
+constexpr const char* nested_software_pipeline_stage = "nested_software_pipeline_stage";
+
+/*! \brief Mark the stage of the result of the software pipeline lowering. This is used to specify
+ * the behavior of nested software pipelines. Should be a 3-tuple consisting of the stage of the
+ * prologue, the body, and the epilogue of the software pipeline.
+ */
+constexpr const char* nested_software_pipeline_order = "nested_software_pipeline_order";
+
 /*!
  * \brief Check if attr_key is a pragma key extension
  * \param attr_key The attr key to be compared