[mlir] [llvm] [MLIR][CAPI] Add MemRef pass bindings to the C API (PR #73949)

[Adam Paszke via llvm-commits]

https://github.com/apaszke created https://github.com/llvm/llvm-project/pull/73949

None

>From b43e1c9fbd50829f795b22077ac5a7c2cd806624 Mon Sep 17 00:00:00 2001
From: Adam Paszke <apaszke at google.com>
Date: Thu, 30 Nov 2023 15:03:03 +0000
Subject: [PATCH] [MLIR][CAPI] Add MemRef pass bindings to the C API

---
 mlir/include/mlir-c/Dialect/MemRef.h          |  2 ++
 mlir/lib/CAPI/Dialect/CMakeLists.txt          |  1 +
 mlir/lib/CAPI/Dialect/MemRefPasses.cpp        | 27 +++++++++++++++++++
 .../llvm-project-overlay/mlir/BUILD.bazel     | 22 ++++++++++++++-
 4 files changed, 51 insertions(+), 1 deletion(-)
 create mode 100644 mlir/lib/CAPI/Dialect/MemRefPasses.cpp

diff --git a/mlir/include/mlir-c/Dialect/MemRef.h b/mlir/include/mlir-c/Dialect/MemRef.h
index 087a4b3f85b1d80..327fe25143f8e8e 100644
--- a/mlir/include/mlir-c/Dialect/MemRef.h
+++ b/mlir/include/mlir-c/Dialect/MemRef.h
@@ -30,4 +30,6 @@ MLIR_DECLARE_CAPI_DIALECT_REGISTRATION(MemRef, memref);
 }
 #endif
 
+#include "mlir/Dialect/MemRef/Transforms/Passes.capi.h.inc"
+
 #endif // MLIR_C_DIALECT_MEMREF_H
diff --git a/mlir/lib/CAPI/Dialect/CMakeLists.txt b/mlir/lib/CAPI/Dialect/CMakeLists.txt
index d815eba48d9b9df..b9cafcd299b94f6 100644
--- a/mlir/lib/CAPI/Dialect/CMakeLists.txt
+++ b/mlir/lib/CAPI/Dialect/CMakeLists.txt
@@ -51,6 +51,7 @@ add_mlir_upstream_c_api_library(MLIRCAPIMath
 
 add_mlir_upstream_c_api_library(MLIRCAPIMemRef
   MemRef.cpp
+  MemRefPasses.cpp
 
   PARTIAL_SOURCES_INTENDED
   LINK_LIBS PUBLIC
diff --git a/mlir/lib/CAPI/Dialect/MemRefPasses.cpp b/mlir/lib/CAPI/Dialect/MemRefPasses.cpp
new file mode 100644
index 000000000000000..ddc95a4f7733526
--- /dev/null
+++ b/mlir/lib/CAPI/Dialect/MemRefPasses.cpp
@@ -0,0 +1,27 @@
+//===- MemRefPasses.cpp - C API for MemRef 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/MemRef/Transforms/Passes.h"
+#include "mlir/Pass/Pass.h"
+
+// Must include the declarations as they carry important visibility attributes.
+#include "mlir/Dialect/MemRef/Transforms/Passes.capi.h.inc"
+
+using namespace mlir::memref;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "mlir/Dialect/MemRef/Transforms/Passes.capi.cpp.inc"
+
+#ifdef __cplusplus
+}
+#endif
+
diff --git a/utils/bazel/llvm-project-overlay/mlir/BUILD.bazel b/utils/bazel/llvm-project-overlay/mlir/BUILD.bazel
index 6ecf28424ba4a5c..1f20bb4f5aaf428 100644
--- a/utils/bazel/llvm-project-overlay/mlir/BUILD.bazel
+++ b/utils/bazel/llvm-project-overlay/mlir/BUILD.bazel
@@ -551,14 +551,20 @@ mlir_c_api_cc_library(
 
 mlir_c_api_cc_library(
     name = "CAPIMemRef",
-    srcs = ["lib/CAPI/Dialect/MemRef.cpp"],
+    srcs = [
+        "lib/CAPI/Dialect/MemRef.cpp",
+        "lib/CAPI/Dialect/MemRefPasses.cpp",
+    ],
     hdrs = ["include/mlir-c/Dialect/MemRef.h"],
     capi_deps = [
         ":CAPIIR",
     ],
+    header_deps = [":MemRefPassIncGen"],
     includes = ["include"],
     deps = [
         ":MemRefDialect",
+        ":MemRefTransforms",
+        ":Pass",
     ],
 )
 
@@ -12382,6 +12388,20 @@ gentbl_cc_library(
             ],
             "include/mlir/Dialect/MemRef/Transforms/Passes.h.inc",
         ),
+        (
+            [
+                "-gen-pass-capi-header",
+                "--prefix=MemRef",
+            ],
+            "include/mlir/Dialect/MemRef/Transforms/Passes.capi.h.inc",
+        ),
+        (
+            [
+                "-gen-pass-capi-impl",
+                "--prefix=MemRef",
+            ],
+            "include/mlir/Dialect/MemRef/Transforms/Passes.capi.cpp.inc",
+        ),
     ],
     tblgen = ":mlir-tblgen",
     td_file = "include/mlir/Dialect/MemRef/Transforms/Passes.td",