Refactor the LowerVectorTransfers pass to use the RewritePattern infra - NFC

This is step 1/n in refactoring infrastructure along the Vector dialect to make it ready for retargetability and composable progressive lowering.

PiperOrigin-RevId: 280529784

2 files changed, 45 insertions, 0 deletions

diff --git a/mlir/test/lib/Transforms/CMakeLists.txt b/mlir/test/lib/Transforms/CMakeLists.txt
index 8669dfed1d7..675b695aa7c 100644
--- a/mlir/test/lib/Transforms/CMakeLists.txt
+++ b/mlir/test/lib/Transforms/CMakeLists.txt
@@ -5,6 +5,7 @@ add_llvm_library(MLIRTestTransforms
   TestInlining.cpp
   TestLoopMapping.cpp
   TestLoopParametricTiling.cpp
+  TestLowerVectorTransfers.cpp
   TestOpaqueLoc.cpp
   TestMemRefStrideCalculation.cpp
   TestVectorizationUtils.cpp
diff --git a/mlir/test/lib/Transforms/TestLowerVectorTransfers.cpp b/mlir/test/lib/Transforms/TestLowerVectorTransfers.cpp
new file mode 100644
index 00000000000..8341777f6a4
--- /dev/null
+++ b/mlir/test/lib/Transforms/TestLowerVectorTransfers.cpp
@@ -0,0 +1,44 @@
+//===- TestLowerVectorTransfers.cpp - Test VectorTransfers lowering -------===//
+//
+// Copyright 2019 The MLIR Authors.
+//
+// Licensed 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 <type_traits>
+
+#include "mlir/Conversion/VectorConversions/VectorConversions.h"
+#include "mlir/IR/PatternMatch.h"
+#include "mlir/Pass/Pass.h"
+#include "mlir/Transforms/Passes.h"
+
+using namespace mlir;
+
+namespace {
+
+struct TestLowerVectorTransfersPass
+    : public FunctionPass<TestLowerVectorTransfersPass> {
+  void runOnFunction() override {
+    OwningRewritePatternList patterns;
+    auto *context = &getContext();
+    populateVectorToAffineLoopsConversionPatterns(context, patterns);
+    applyPatternsGreedily(getFunction(), patterns);
+  }
+};
+
+} // end anonymous namespace
+
+static PassRegistration<TestLowerVectorTransfersPass>
+    pass("test-affine-lower-vector-transfers",
+         "Materializes vector transfer ops to a "
+         "proper abstraction for the hardware");