[llvm] [mlir] Add ContractionOpInterface utility functions for vector matrix multiplication (PR #68945)

[Diego Caballero via llvm-commits]

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@@ -49,6 +49,24 @@ bool isColumnMajorMatmul(ArrayAttr indexingMaps);
 /// the reduction.
 bool isRowMajorBatchMatmul(ArrayAttr indexingMaps);
 
+/// Tests whether the given maps describe a vector matrix multiplication. The
+/// test is permutation-invariant. Note that this only checks the affine maps
+/// from an operation, so does not perform any checks on the math being
+/// performed within the reduction.
+bool isVecmat(ArrayAttr indexingMaps);
+
+/// Tests whether the given maps describe a matrix vector multiplication. The
+/// test is permutation-invariant. Note that this only checks the affine maps
+/// from an operation, so does not perform any checks on the math being
+/// performed within the reduction.
+bool isMatvec(ArrayAttr indexingMaps);
+
+/// Tests whether the given maps describe a batch matrix vector multiplication.
+/// The test is permutation-invariant. Note that this only checks the affine
+/// maps from an operation, so does not perform any checks on the math being
+/// performed within the reduction.
+bool isBatchMatvec(ArrayAttr indexingMaps);
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dcaballe wrote:

nit: rename to `VecMatMul`/`MatVecMul`,  `VectorMatrixMult`/`MatrixVectorMult` or similar?

https://github.com/llvm/llvm-project/pull/68945