[mlir][python] Add python support for async dialect and passes.

since the `async` keyword is reserved in python, the dialect is called async_dialect.

Differential Revision: https://reviews.llvm.org/D101447

Author: nicolasvasilache

mlir/include/mlir-c/Dialect/Async.h

@@ -0,0 +1,28 @@
+//===-- mlir-c/Dialect/Async.h - C API for Async dialect ---------*- C -*-===//
+//
+// 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
+//
+//===---------------------------------------------------------------------===//
+
+#ifndef MLIR_C_DIALECT_ASYNC_H
+#define MLIR_C_DIALECT_ASYNC_H
+
+#include "mlir-c/Registration.h"
+#include "mlir-c/Support.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+MLIR_DECLARE_CAPI_DIALECT_REGISTRATION(Async, async);
+
+#ifdef __cplusplus
+}
+#endif
+
+#include "mlir/Dialect/Async/Passes.capi.h.inc"
+
+#endif // MLIR_C_DIALECT_ASYNC_H

mlir/include/mlir/Dialect/Async/CMakeLists.txt

@@ -2,6 +2,8 @@ add_subdirectory(IR)
 
 set(LLVM_TARGET_DEFINITIONS Passes.td)
 mlir_tablegen(Passes.h.inc -gen-pass-decls -name Async)
+mlir_tablegen(Passes.capi.h.inc -gen-pass-capi-header --prefix Async)
+mlir_tablegen(Passes.capi.cpp.inc -gen-pass-capi-impl --prefix Async)
 add_public_tablegen_target(MLIRAsyncPassIncGen)
 
 add_mlir_doc(Passes AsyncPasses ./ -gen-pass-doc)

mlir/lib/Bindings/Python/AsyncOps.td

@@ -0,0 +1,15 @@
+//===-- AsyncOps.td - Entry point async_dialect bindings --*- tablegen -*-===//
+//
+// 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
+//
+//===---------------------------------------------------------------------===//
+
+#ifndef PYTHON_BINDINGS_ASYNC_OPS
+#define PYTHON_BINDINGS_ASYNC_OPS
+
+include "mlir/Bindings/Python/Attributes.td"
+include "mlir/Dialect/Async/IR/AsyncOps.td"
+
+#endif

mlir/lib/Bindings/Python/AsyncPasses.cpp

@@ -0,0 +1,22 @@
+//===- AsyncPasses.cpp - Pybind module for the Async passes -------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "mlir-c/Dialect/Async.h"
+
+#include <pybind11/pybind11.h>
+
+// -----------------------------------------------------------------------------
+// Module initialization.
+// -----------------------------------------------------------------------------
+
+PYBIND11_MODULE(_mlirAsyncPasses, m) {
+  m.doc() = "MLIR Async Dialect Passes";
+
+  // Register all Async passes on load.
+  mlirRegisterAsyncPasses();
+}

mlir/lib/Bindings/Python/CMakeLists.txt

@@ -31,6 +31,11 @@ endforeach()
 # Generate dialect-specific bindings.
 ################################################################################
 
+add_mlir_dialect_python_bindings(MLIRBindingsPythonAsyncOps
+  TD_FILE AsyncOps.td
+  DIALECT_NAME async_dialect)
+add_dependencies(MLIRBindingsPythonSources MLIRBindingsPythonAsyncOps)
+
 add_mlir_dialect_python_bindings(MLIRBindingsPythonBuiltinOps
   TD_FILE BuiltinOps.td
   DIALECT_NAME builtin)
@@ -120,6 +125,14 @@ endif()
 add_subdirectory(Transforms)
 add_subdirectory(Conversions)
 
+add_mlir_python_extension(MLIRAsyncPassesBindingsPythonExtension _mlirAsyncPasses
+  INSTALL_DIR
+    python
+  SOURCES
+    AsyncPasses.cpp
+)
+add_dependencies(MLIRBindingsPythonExtension MLIRAsyncPassesBindingsPythonExtension)
+
 add_mlir_python_extension(MLIRLinalgPassesBindingsPythonExtension _mlirLinalgPasses
   INSTALL_DIR
     python

mlir/lib/Bindings/Python/mlir/dialects/async_dialect/__init__.py

@@ -0,0 +1,5 @@
+#  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
+
+from .._async_dialect_ops_gen import *

mlir/lib/Bindings/Python/mlir/dialects/async_dialect/passes/__init__.py

@@ -0,0 +1,6 @@
+#  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
+
+from ...._cext_loader import _load_extension
+_cextAsyncPasses = _load_extension("_mlirAsyncPasses")

mlir/lib/CAPI/Dialect/Async.cpp

@@ -0,0 +1,13 @@
+//===- Async.cpp - C Interface for Async dialect --------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "mlir/Dialect/Async/IR/Async.h"
+#include "mlir-c/Dialect/Async.h"
+#include "mlir/CAPI/Registration.h"
+
+MLIR_DEFINE_CAPI_DIALECT_REGISTRATION(Async, async, mlir::async::AsyncDialect)

mlir/lib/CAPI/Dialect/AsyncPasses.cpp

@@ -0,0 +1,26 @@
+//===- AsyncPasses.cpp - C API for Async Dialect Passes -----------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "mlir/CAPI/Pass.h"
+#include "mlir/Dialect/Async/Passes.h"
+#include "mlir/Pass/Pass.h"
+
+// Must include the declarations as they carry important visibility attributes.
+#include "mlir/Dialect/Async/Passes.capi.h.inc"
+
+using namespace mlir;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "mlir/Dialect/Async/Passes.capi.cpp.inc"
+
+#ifdef __cplusplus
+}
+#endif

mlir/lib/CAPI/Dialect/CMakeLists.txt

@@ -1,5 +1,7 @@
 # TODO: Make the check source feature optional as an argument on *_add_library.
 set(LLVM_OPTIONAL_SOURCES
+  Async.cpp
+  AsyncPasses.cpp
   Linalg.cpp
   LinalgPasses.cpp
   SCF.cpp
@@ -8,6 +10,20 @@ set(LLVM_OPTIONAL_SOURCES
   Tensor.cpp
 )
 
+add_mlir_public_c_api_library(MLIRCAPIAsync
+  Async.cpp
+  AsyncPasses.cpp
+
+  DEPENDS
+  MLIRAsyncPassIncGen
+
+  LINK_LIBS PUBLIC
+  MLIRCAPIIR
+  MLIRAsync
+  MLIRAsyncTransforms
+  MLIRPass
+)
+
 add_mlir_public_c_api_library(MLIRCAPILinalg
   Linalg.cpp
   LinalgPasses.cpp