[mlir][linalg] Add test case: vectorize tensor.pad and bufferize to allocation

[springerm]

Summary

Add a test case that first vectorizes a tensor.pad op, then bufferizes it to a new allocation with a specified memory space.

Depends On: D154081

mlir/test/Dialect/Linalg/pad-to-specific-memory-space.mlir

%padded, %pad = transform.structured.pad %0 {
     padding_values=[0.0 : f32, 0.0 : f32, 0.0 : f32],
     padding_dimensions=[0, 1, 2],
     pack_paddings=[1, 1, 1]
   } : (!transform.any_op) -> (!transform.any_op, !transform.any_op)
   %buffer = transform.structured.bufferize_to_allocation %pad {memory_space = 3} : !transform.any_op
   %2 = transform.bufferization.one_shot_bufferize %arg1 {bufferize_function_boundaries=true} : (!transform.any_op) -> !transform.any_op
 
 }
+
+// -----
+
+#map = affine_map<()[s0] -> (-s0 + 12, 7)>
+
+// CHECK-LABEL: func @vectorize_and_bufferize_pad(
+//  CHECK-SAME:     %[[arg0:.*]]: memref<24x12xf32, strided<[?, ?], offset: ?>>,
+//  CHECK-SAME:     %[[arg1:.*]]: memref<12x25xf32, strided<[?, ?], offset: ?>>,
+//  CHECK-SAME:     %[[arg2:.*]]: memref<24x25xf32, strided<[?, ?], offset: ?>>,
+func.func @vectorize_and_bufferize_pad(%arg0: tensor<24x12xf32>,
+                                       %arg1: tensor<12x25xf32>,
+                                       %arg2: tensor<24x25xf32>,
+                                       %iv0 : index, %iv1 : index,
+                                       %iv2 : index) -> tensor<24x25xf32> {
+  %0 = affine.min #map()[%iv2]
+
+  // CHECK: %[[s0:.*]] = memref.subview %[[arg0]]
+  %1 = tensor.extract_slice %arg0[%iv0, %iv2] [4, %0] [1, 1] : tensor<24x12xf32> to tensor<4x?xf32>
+  // CHECK: %[[s1:.*]] = memref.subview %[[arg1]]
+  %2 = tensor.extract_slice %arg1[%iv2, %iv1] [%0, 5] [1, 1] : tensor<12x25xf32> to tensor<?x5xf32>
+  // CHECK: %[[s2:.*]] = memref.subview %[[arg2]]
+  %3 = tensor.extract_slice %arg2[%iv0, %iv1] [4, 5] [1, 1] : tensor<24x25xf32> to tensor<4x5xf32>
+
+  // CHECK: %[[v0:.*]] = vector.mask {{.*}} { vector.transfer_read %[[s0]]
+  // CHECK: %[[alloc0:.*]] = memref.alloc() : memref<4x7xf32, 3>
+  // CHECK: vector.mask {{.*}} { vector.transfer_write %[[v0]], %[[alloc0]]
+
+  // CHECK: %[[v1:.*]] = vector.mask {{.*}} { vector.transfer_read %[[s1]]
+  // CHECK: %[[alloc1:.*]] = memref.alloc() : memref<7x5xf32, 3>
+  // CHECK: vector.mask {{.*}} { vector.transfer_write %[[v1]], %[[alloc1]]
+
+  // CHECK: %[[v2:.*]] = vector.mask {{.*}} { vector.transfer_read %[[s2]]
+  // CHECK: %[[alloc2:.*]] = memref.alloc() : memref<4x5xf32, 3>
+  // CHECK: vector.mask {{.*}} { vector.transfer_write %[[v2]], %[[alloc0]]
+
+  // CHECK: linalg.matmul ins(%[[alloc0]], %[[alloc1]] : {{.*}}) outs(%[[alloc2]] : {{.*}})
+  // Copy back result.
+  // CHECK: memref.copy %[[alloc2]], %[[s2]]
+  %4 = linalg.matmul ins(%1, %2 : tensor<4x?xf32>, tensor<?x5xf32>) outs(%3 : tensor<4x5xf32>) -> tensor<4x5xf32>
+
+  // insert_slice bufferizes to a no-op.
+  %5 = tensor.insert_slice %4 into %arg2[%iv0, %iv1] [4, 5] [1, 1] : tensor<4x5xf32> into tensor<24x25xf32>
+  func.return %5 : tensor<24x25xf32>
+}
+
+transform.sequence failures(propagate) {
+^bb1(%arg1: !transform.any_op):
+  %0 = transform.structured.match ops{["linalg.matmul"]} in %arg1 : (!transform.any_op) -> !transform.any_op
+  %padded, %pad = transform.structured.pad %0 {
+    padding_values=[0.0 : f32, 0.0 : f32, 0.0 : f32],
+    padding_dimensions=[0, 1, 2],
+    pack_paddings=[1, 1, 1]
+  } : (!transform.any_op) -> (!transform.any_op, !transform.any_op)
+  transform.structured.masked_vectorize %pad vector_sizes [10, 12] : !transform.any_op
+  %vector_write = transform.structured.match ops{["vector.transfer_write"]} in %arg1 : (!transform.any_op) -> !transform.any_op
+  %mask_op = transform.get_parent_op %vector_write {op_name = "vector.mask"} : (!transform.any_op) -> !transform.any_op
+  %buffer = transform.structured.bufferize_to_allocation %mask_op {memory_space = 3} : !transform.any_op
+  %2 = transform.bufferization.one_shot_bufferize %arg1 {bufferize_function_boundaries=true} : (!transform.any_op) -> !transform.any_op
+}