[CIR] Add cir-lsp-server

Author: mmha

clang/tools/CMakeLists.txt

@@ -6,6 +6,7 @@ add_clang_subdirectory(apinotes-test)
 if(CLANG_ENABLE_CIR)
   add_clang_subdirectory(cir-opt)
   add_clang_subdirectory(cir-translate)
+  add_clang_subdirectory(cir-lsp-server)
 endif()
 add_clang_subdirectory(clang-diff)
 add_clang_subdirectory(clang-format)

clang/tools/cir-lsp-server/CMakeLists.txt

@@ -0,0 +1,34 @@
+get_property(dialect_libs GLOBAL PROPERTY MLIR_DIALECT_LIBS)
+get_property(conversion_libs GLOBAL PROPERTY MLIR_CONVERSION_LIBS)
+
+include_directories(${LLVM_MAIN_SRC_DIR}/../mlir/include)
+include_directories(${CMAKE_BINARY_DIR}/tools/mlir/include)
+
+set(LIBS
+  ${dialect_libs}
+  ${conversion_libs}
+  ${test_libs}
+  clangCIR
+  clangCIRLoweringDirectToLLVM
+  MLIRCIR
+  MLIRAffineAnalysis
+  MLIRAnalysis
+  MLIRDialect
+  MLIRLspServerLib
+  MLIRParser
+  MLIRPass
+  MLIRTransforms
+  MLIRTransformUtils
+  MLIRSupport
+  MLIRIR
+  )
+
+add_mlir_tool(cir-lsp-server
+  cir-lsp-server.cpp
+
+  DEPENDS
+  ${LIBS}
+)
+
+target_link_libraries(cir-lsp-server PRIVATE ${LIBS})
+llvm_update_compile_flags(cir-lsp-server)

clang/tools/cir-lsp-server/cir-lsp-server.cpp

@@ -0,0 +1,24 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+// A language server for ClangIR
+//
+//===----------------------------------------------------------------------===//
+
+#include "mlir/IR/Dialect.h"
+#include "mlir/IR/MLIRContext.h"
+#include "mlir/InitAllDialects.h"
+#include "mlir/Tools/mlir-lsp-server/MlirLspServerMain.h"
+#include "clang/CIR/Dialect/IR/CIRDialect.h"
+
+int main(int argc, char **argv) {
+  mlir::DialectRegistry registry;
+  mlir::registerAllDialects(registry);
+  registry.insert<cir::CIRDialect>();
+  return failed(mlir::MlirLspServerMain(argc, argv, registry));
+}