introduce TileForIntrin

Author: masahi

src/meta_schedule/schedule_rule/auto_tensorize.cc

@@ -87,5 +87,13 @@ Optional<LoopRV> TilingwithTensorIntrin(const tir::Schedule& sch, const tir::Blo
   return reorder_suffix[0];
 }
 
+tir::BlockRV TileForIntrin(tir::Schedule sch, tir::BlockRV block, const std::string& intrin_name) {
+  Optional<tir::LoopRV> tiled_loop_rv = TilingwithTensorIntrin(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;
+}
+
 }  // namespace meta_schedule
 }  // namespace tvm

src/meta_schedule/schedule_rule/auto_tensorize.h

@@ -26,6 +26,9 @@ namespace meta_schedule {
 
 Optional<tir::LoopRV> TilingwithTensorIntrin(const tir::Schedule& sch, const tir::BlockRV& block_rv,
                                              const String& intrin_name);
+
+tir::BlockRV TileForIntrin(tir::Schedule sch, tir::BlockRV block, const std::string& intrin_name);
+
 }  // namespace meta_schedule
 }  // namespace tvm
 

src/meta_schedule/schedule_rule/multi_level_tiling_vnni.cc

@@ -24,20 +24,13 @@
 namespace tvm {
 namespace meta_schedule {
 
-std::vector<State> TileForVNNI(State state) {
-  const std::string intrin_name = "dot_16x4_vnni";
-  Optional<tir::LoopRV> tiled_loop_rv =
-      TilingwithTensorIntrin(state.sch, state.block_rv, intrin_name);
-  ICHECK(tiled_loop_rv.defined());
-  state.block_rv = state.sch->Blockize(tiled_loop_rv.value());
-  state.sch->Annotate(state.block_rv, tir::attr::meta_schedule_auto_tensorize, String(intrin_name));
-  return {state};
-}
-
 class MultiLevelTilingVNNINode : public MultiLevelTilingNode {
  protected:
   virtual std::vector<State> ApplySubRules(std::vector<State> states) {
-    states = SubRule(std::move(states), [&](State state) { return TileForVNNI(state); });
+    states = SubRule(std::move(states), [&](State state) {
+      state.block_rv = TileForIntrin(state.sch, state.block_rv, "dot_16x4_vnni");
+      return std::vector<State>(1, state);
+    });
     return MultiLevelTilingNode::ApplySubRules(states);
   }