[mlir][tensor][transform][python] Add mix-in class.

This patch adds a mix-in class for the only transform op of the tensor
dialect that can benefit from one: the MakeLoopIndependentOp. It adds an
overload that makes providing the return type optional.

Reviewed By: ftynse

Differential Revision: https://reviews.llvm.org/D156918

mlir/python/CMakeLists.txt

@@ -207,6 +207,7 @@ declare_mlir_dialect_extension_python_bindings(
   ROOT_DIR "${CMAKE_CURRENT_SOURCE_DIR}/mlir"
   TD_FILE dialects/TensorTransformOps.td
   SOURCES
+    dialects/_tensor_transform_ops_ext.py
     dialects/transform/tensor.py
   DIALECT_NAME transform
   EXTENSION_NAME tensor_transform)

mlir/python/mlir/dialects/_tensor_transform_ops_ext.py

@@ -0,0 +1,64 @@
+#  Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+#  See https://llvm.org/LICENSE.txt for license information.
+#  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+try:
+    from ..ir import *
+    from ..dialects import transform
+except ImportError as e:
+    raise RuntimeError("Error loading imports from extension module") from e
+
+from typing import Optional, overload, Union
+
+
+class MakeLoopIndependentOp:
+    """Specialization for MakeLoopIndependentOp class."""
+
+    @overload
+    def __init__(
+        self,
+        transformed_type: Type,
+        target: Union[Operation, OpView, Value],
+        num_loops: Union[int, IntegerAttr],
+        *,
+        loc=None,
+        ip=None
+    ):
+        ...
+
+    @overload
+    def __init__(
+        self,
+        target: Union[Operation, OpView, Value],
+        num_loops: Union[int, IntegerAttr],
+        *,
+        loc=None,
+        ip=None
+    ):
+        ...
+
+    def __init__(
+        self,
+        transformed_type_or_target: Type,
+        target_or_num_loops: Union[int, IntegerAttr, Operation, OpView, Value] = None,
+        num_loops_or_none: Optional[Union[int, IntegerAttr]] = None,
+        *,
+        loc=None,
+        ip=None
+    ):
+        if isinstance(transformed_type_or_target, Type):
+            transformed_type = transformed_type_or_target
+            target = target_or_num_loops
+            num_loops = num_loops_or_none
+        else:
+            transformed_type = transform.AnyOpType.get()
+            target = transformed_type_or_target
+            num_loops = target_or_num_loops
+
+        super().__init__(
+            transformed_type,
+            target,
+            num_loops,
+            loc=loc,
+            ip=ip,
+        )

mlir/test/python/dialects/transform_tensor_ext.py

@@ -0,0 +1,40 @@
+# RUN: %PYTHON %s | FileCheck %s
+
+from mlir.ir import *
+from mlir.dialects import transform
+from mlir.dialects.transform import tensor
+
+
+def run(f):
+    print("\nTEST:", f.__name__)
+    with Context(), Location.unknown():
+        module = Module.create()
+        with InsertionPoint(module.body):
+            sequence = transform.SequenceOp(
+                transform.FailurePropagationMode.PROPAGATE,
+                [],
+                transform.AnyOpType.get(),
+            )
+            with InsertionPoint(sequence.body):
+                f(sequence.bodyTarget)
+                transform.YieldOp()
+        print(module)
+    return f
+
+
+@run
+def testMakeLoopIndependentOpCompact(target):
+    tensor.MakeLoopIndependentOp(target, 4)
+    # CHECK-LABEL: TEST: testMakeLoopIndependentOpCompact
+    # CHECK: = transform.tensor.make_loop_independent
+    # CHECK-SAME: num_loops = 4 : i64
+    # CHECK-SAME: (!transform.any_op) -> !transform.any_op
+
+
+@run
+def testMakeLoopIndependentOpTyped(target):
+    tensor.MakeLoopIndependentOp(transform.OperationType.get("test.dummy"), target, 4)
+    # CHECK-LABEL: TEST: testMakeLoopIndependentOpTyped
+    # CHECK: = transform.tensor.make_loop_independent
+    # CHECK-SAME: num_loops = 4 : i64
+    # CHECK-SAME: (!transform.any_op) -> !transform.op<"test.dummy">

utils/bazel/llvm-project-overlay/mlir/python/BUILD.bazel

@@ -975,6 +975,7 @@ filegroup(
         "mlir/dialects/_loop_transform_ops_ext.py",
         "mlir/dialects/_memref_transform_ops_ext.py",
         "mlir/dialects/_structured_transform_ops_ext.py",
+        "mlir/dialects/_tensor_ops_ext.py",
         "mlir/dialects/_transform_ops_ext.py",
         "mlir/dialects/_transform_pdl_extension_ops_ext.py",
         ":BufferizationTransformOpsPyGen",