[mlir][vector] Add a new TD op to wrap unit-dim collapsing patterns (#157507)

Adds a new TD Op,
  * `apply_patterns.vector.drop_inner_most_unit_dims_from_xfer_ops`,

which wraps the following Vector patterns:

  * `DropInnerMostUnitDimsTransferRead`
  * `DropInnerMostUnitDimsTransferWrite`

This complements other existing unit-dimension–related patterns.

To reduce duplication, the
`TestVectorTransferCollapseInnerMostContiguousDims`
pass has been removed. That pass was only used for testing, and its
functionality is now covered by the newly added TD Op.

1 files changed, 0 insertions, 32 deletions

diff --git a/mlir/test/lib/Dialect/Vector/TestVectorTransforms.cpp b/mlir/test/lib/Dialect/Vector/TestVectorTransforms.cpp
index d6596cd341df..c2d184626818 100644
--- a/mlir/test/lib/Dialect/Vector/TestVectorTransforms.cpp
+++ b/mlir/test/lib/Dialect/Vector/TestVectorTransforms.cpp
@@ -344,36 +344,6 @@ struct TestVectorTransferOpt
   }
 };
 
-struct TestVectorTransferCollapseInnerMostContiguousDims
-    : public PassWrapper<TestVectorTransferCollapseInnerMostContiguousDims,
-                         OperationPass<func::FuncOp>> {
-  MLIR_DEFINE_EXPLICIT_INTERNAL_INLINE_TYPE_ID(
-      TestVectorTransferCollapseInnerMostContiguousDims)
-
-  TestVectorTransferCollapseInnerMostContiguousDims() = default;
-  TestVectorTransferCollapseInnerMostContiguousDims(
-      const TestVectorTransferCollapseInnerMostContiguousDims &pass) = default;
-
-  void getDependentDialects(DialectRegistry &registry) const override {
-    registry.insert<memref::MemRefDialect, affine::AffineDialect>();
-  }
-
-  StringRef getArgument() const final {
-    return "test-vector-transfer-collapse-inner-most-dims";
-  }
-
-  StringRef getDescription() const final {
-    return "Test lowering patterns that reduces the rank of the vector "
-           "transfer memory and vector operands.";
-  }
-
-  void runOnOperation() override {
-    RewritePatternSet patterns(&getContext());
-    populateDropInnerMostUnitDimsXferOpPatterns(patterns);
-    (void)applyPatternsGreedily(getOperation(), std::move(patterns));
-  }
-};
-
 struct TestVectorSinkPatterns
     : public PassWrapper<TestVectorSinkPatterns, OperationPass<func::FuncOp>> {
   MLIR_DEFINE_EXPLICIT_INTERNAL_INLINE_TYPE_ID(TestVectorSinkPatterns)
@@ -1079,8 +1049,6 @@ void registerTestVectorLowerings() {
 
   PassRegistration<TestVectorTransferOpt>();
 
-  PassRegistration<TestVectorTransferCollapseInnerMostContiguousDims>();
-
   PassRegistration<TestVectorSinkPatterns>();
 
   PassRegistration<TestVectorReduceToContractPatternsPatterns>();