MasterJH5574 commented on code in PR #11088:
URL: https://github.com/apache/tvm/pull/11088#discussion_r855853168
##########
python/tvm/meta_schedule/schedule_rule/multi_level_tiling.py:
##########
@@ -82,3 +82,37 @@ def __init__(
reuse_read.as_dict() if reuse_read is not None else None,
reuse_write.as_dict() if reuse_write is not None else None,
)
+
+
+@register_object("meta_schedule.MultiLevelTilingWithIntrin")
+class MultiLevelTilingWithIntrin(ScheduleRule):
+ """Multi-level tiling with reuse.
+
+ Parameters
+ ----------
+ intrin_name : str
+ The name of a tensor intrinsic, must be registerd via
TensorIntrin.register(...) beforehand
Review Comment:
Should we have the documents for other parameters here?
##########
src/meta_schedule/schedule_rule/multi_level_tiling_with_intrin.cc:
##########
@@ -0,0 +1,79 @@
+/*
+ * 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.
+ */
+
+#include "../../tir/schedule/transform.h"
+#include "../utils.h"
+#include "multi_level_tiling.h"
+
+namespace tvm {
+namespace meta_schedule {
+
+/*!
+ * \brief Tile a subset of loops in the block according to the given tensor
intrinsic, and annotate
+ * the tiled block for tensorization by postproc rewrite.
+ */
+tir::BlockRV TileForIntrin(tir::Schedule sch, tir::BlockRV block, const
std::string& intrin_name) {
+ Optional<tir::LoopRV> tiled_loop_rv = TileWithTensorIntrin(sch, block,
intrin_name);
+ ICHECK(tiled_loop_rv.defined());
+ tir::BlockRV outer_block = sch->Blockize(tiled_loop_rv.value());
+ sch->Annotate(outer_block, tir::attr::meta_schedule_auto_tensorize,
String(intrin_name));
+ return outer_block;
+}
+
+/*!
+ * \brief Extension of MultiLevelTiling for auto-tensorizing with a single
intrinsic.
+ */
+class MultiLevelTilingWithIntrinNode : public MultiLevelTilingNode {
+ protected:
+ // Override ApplySubRules to tile the inner loops according to the given
tensor intrinsic, then
+ // tile the outerloops.
+ virtual std::vector<State> ApplySubRules(std::vector<State> states) {
+ states = SubRule(std::move(states), [&](State state) {
+ state.block_rv = TileForIntrin(state.sch, state.block_rv, intrin_name);
+ return std::vector<State>(1, state);
+ });
+ return MultiLevelTilingNode::ApplySubRules(states);
+ }
+
+ public:
+ /*! \brief The name of a tensor intrinsic. */
+ String intrin_name;
+
+ static constexpr const char* _type_key =
"meta_schedule.MultiLevelTilingWithIntrin";
+ TVM_DECLARE_FINAL_OBJECT_INFO(MultiLevelTilingWithIntrinNode,
MultiLevelTilingNode);
+};
+
+ScheduleRule 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) {
+ ICHECK(tir::TensorIntrin::Get(intrin_name).defined())
+ << "Provided tensor intrinsic " << intrin_name << " is not registered.";
+ auto node = MultiLevelTilingInitCommon<MultiLevelTilingWithIntrinNode>(
+ structure, tile_binds, max_innermost_factor, vector_load_lens,
reuse_read, reuse_write);
Review Comment:
I’m a little bit confused: where are the loops tiled according to the tiling
structure in this rule?
##########
src/meta_schedule/schedule_rule/multi_level_tiling.cc:
##########
@@ -25,6 +25,7 @@
#include <vector>
#include "../utils.h"
+#include "tvm/meta_schedule/schedule_rule.h"
Review Comment:
Hmmm what’s this line intended for?
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