[mlir] Linalg: add vector transfer lowering patterns to the contraction lowering

This fixes a performance regression in vec-mat vectorization

Reviewed By: asaadaldien

Differential Revision: https://reviews.llvm.org/D101795

mlir/lib/Dialect/Linalg/Transforms/CodegenStrategy.cpp

@@ -89,6 +89,8 @@ void mlir::linalg::CodegenStrategy::transform(FuncOp func) const {
         .add<ContractionOpToOuterProductOpLowering,
              ContractionOpToMatmulOpLowering, ContractionOpLowering>(
             vectorTransformsOptions, context);
+    vector::populateVectorTransferLoweringPatterns(
+        vectorContractLoweringPatterns);
     (void)applyPatternsAndFoldGreedily(
         func, std::move(vectorContractLoweringPatterns));
   }