Revert "Implement Pass and Dialect plugins for mlir-opt"

This reverts commit e9b4158.

This landed without the right authorship.

mlir/examples/standalone/CMakeLists.txt

@@ -52,5 +52,4 @@ if(MLIR_ENABLE_BINDINGS_PYTHON)
 endif()
 add_subdirectory(test)
 add_subdirectory(standalone-opt)
-add_subdirectory(standalone-plugin)
 add_subdirectory(standalone-translate)

mlir/examples/standalone/include/Standalone/CMakeLists.txt

@@ -1,7 +1,3 @@
 add_mlir_dialect(StandaloneOps standalone)
 add_mlir_doc(StandaloneDialect StandaloneDialect Standalone/ -gen-dialect-doc)
 add_mlir_doc(StandaloneOps StandaloneOps Standalone/ -gen-op-doc)
-
-set(LLVM_TARGET_DEFINITIONS StandalonePasses.td)
-mlir_tablegen(StandalonePasses.h.inc --gen-pass-decls)
-add_public_tablegen_target(MLIRStandalonePassesIncGen)

mlir/examples/standalone/lib/Standalone/CMakeLists.txt

@@ -2,17 +2,14 @@ add_mlir_dialect_library(MLIRStandalone
         StandaloneTypes.cpp
         StandaloneDialect.cpp
         StandaloneOps.cpp
-        StandalonePasses.cpp
 
         ADDITIONAL_HEADER_DIRS
         ${PROJECT_SOURCE_DIR}/include/Standalone
 
         DEPENDS
         MLIRStandaloneOpsIncGen
-        MLIRStandalonePassesIncGen
 
 	LINK_LIBS PUBLIC
 	MLIRIR
         MLIRInferTypeOpInterface
-        MLIRFuncDialect
 	)

mlir/examples/standalone/standalone-opt/standalone-opt.cpp

@@ -21,11 +21,9 @@
 #include "llvm/Support/ToolOutputFile.h"
 
 #include "Standalone/StandaloneDialect.h"
-#include "Standalone/StandalonePasses.h"
 
 int main(int argc, char **argv) {
   mlir::registerAllPasses();
-  mlir::standalone::registerPasses();
   // TODO: Register standalone passes here.
 
   mlir::DialectRegistry registry;

mlir/examples/standalone/test/lit.cfg.py

@@ -44,16 +44,12 @@
 # test_exec_root: The root path where tests should be run.
 config.test_exec_root = os.path.join(config.standalone_obj_root, 'test')
 config.standalone_tools_dir = os.path.join(config.standalone_obj_root, 'bin')
-config.standalone_libs_dir = os.path.join(config.standalone_obj_root, 'lib')
-
-config.substitutions.append(('%standalone_libs', config.standalone_libs_dir))
 
 # Tweak the PATH to include the tools dir.
 llvm_config.with_environment('PATH', config.llvm_tools_dir, append_path=True)
 
 tool_dirs = [config.standalone_tools_dir, config.llvm_tools_dir]
 tools = [
-    'mlir-opt',
     'standalone-capi-test',
     'standalone-opt',
     'standalone-translate',