[InlineAdvisor] Restructure advisor plugin unittest cmake

Move the plugin used in the unittest to test Inline Advisor Plugins
into a separate folder to clean up the cmake file for the analysis
tests.

Differential Revision: https://reviews.llvm.org/D140559

llvm/unittests/Analysis/CMakeLists.txt

@@ -52,11 +52,6 @@ set(ANALYSIS_TEST_SOURCES
   VectorUtilsTest.cpp
   )
 
-# The unit tests target does not use InlineAdvisorPlugin.cpp
-# so if not added to LLVM_OPTIONAL_SOURCES, FileCheck will
-# complain about unused file.
-set(LLVM_OPTIONAL_SOURCES InlineAdvisorPlugin.cpp)
-
 set(MLGO_TESTS TFUtilsTest.cpp TrainingLoggerTest.cpp)
 if (LLVM_HAVE_TFLITE)
   LIST(APPEND ANALYSIS_TEST_SOURCES ${MLGO_TESTS})
@@ -70,35 +65,4 @@ add_llvm_unittest_with_input_files(AnalysisTests
 
 target_link_libraries(AnalysisTests PRIVATE LLVMTestingSupport)
 
-# The advisor plugin expects to not link against the Analysis, Support and Core 
-# libraries, but expects them to exist in the process loading the plugin. This 
-# doesn't work with DLLs on Windows (where a shared library can't have undefined
-# references), so just skip this testcase on Windows.
-if (NOT WIN32)
-  # On AIX, enable run-time linking to allow symbols from the plugins shared
-  # objects to be properly bound.
-  if(CMAKE_SYSTEM_NAME STREQUAL "AIX")
-    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-brtl")
-  endif()
-
-  # This plugin is built as a stand-alone plugin, so since we don't use the
-  # ANALYSIS_TEST_SOURCES files, we have to add them to LLVM_OPTIONAL_SOURCES
-  # so that FileCheck doesn't complain about unsued files.
-  LIST(APPEND LLVM_OPTIONAL_SOURCES ${ANALYSIS_TEST_SOURCES})
-
-  unset(LLVM_LINK_COMPONENTS)
-  add_llvm_library(InlineAdvisorPlugin MODULE BUILDTREE_ONLY InlineAdvisorPlugin.cpp)
-  # Put PLUGIN next to the unit test executable.
-  set_output_directory(InlineAdvisorPlugin
-      BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}
-      LIBRARY_DIR ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}
-      )
-  set_target_properties(InlineAdvisorPlugin PROPERTIES FOLDER "Tests")
-
-  export_executable_symbols_for_plugins(AnalysisTests)
-  # The plugin depends on some of the output files of intrinsics_gen, so make sure
-  # it is built before the plugin.
-  add_dependencies(InlineAdvisorPlugin intrinsics_gen)
-  add_dependencies(AnalysisTests InlineAdvisorPlugin)
-  set_property(TARGET InlineAdvisorPlugin PROPERTY FOLDER "Tests/UnitTests/AnalysisTests")
-endif()
+add_subdirectory(InlineAdvisorPlugin)

llvm/unittests/Analysis/InlineAdvisorPlugin/CMakeLists.txt

@@ -0,0 +1,27 @@
+# The advisor plugin expects to not link against the Analysis, Support and Core 
+# libraries, but expects them to exist in the process loading the plugin. This 
+# doesn't work with DLLs on Windows (where a shared library can't have undefined
+# references), so just skip this testcase on Windows.
+if (NOT WIN32)
+  # On AIX, enable run-time linking to allow symbols from the plugins shared
+  # objects to be properly bound.
+  if(CMAKE_SYSTEM_NAME STREQUAL "AIX")
+    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-brtl")
+  endif()
+
+  unset(LLVM_LINK_COMPONENTS)
+  add_llvm_library(InlineAdvisorPlugin MODULE BUILDTREE_ONLY InlineAdvisorPlugin.cpp)
+  # Put PLUGIN next to the unit test executable.
+  set_output_directory(InlineAdvisorPlugin
+      BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/../
+      LIBRARY_DIR ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/../
+      )
+  set_target_properties(InlineAdvisorPlugin PROPERTIES FOLDER "Tests")
+
+  export_executable_symbols_for_plugins(AnalysisTests)
+  # The plugin depends on some of the output files of intrinsics_gen, so make sure
+  # it is built before the plugin.
+  add_dependencies(InlineAdvisorPlugin intrinsics_gen)
+  add_dependencies(AnalysisTests InlineAdvisorPlugin)
+  set_property(TARGET InlineAdvisorPlugin PROPERTY FOLDER "Tests/UnitTests/AnalysisTests")
+endif()