[flang] Revise IDE folder structure (#89745)

Update the folder titles for targets in the monorepository that have not
seen taken care of for some time. These are the folders that targets are
organized in Visual Studio and XCode (`set_property(TARGET <target>
PROPERTY FOLDER "<title>")`) when using the respective CMake's IDE
generator.

 * Ensure that every target is in a folder
 * Use a folder hierarchy with each LLVM subproject as a top-level folder
 * Use consistent folder names between subprojects
 * When using target-creating functions from AddLLVM.cmake, automatically
deduce the folder. This reduces the number of
`set_property`/`set_target_property`, but are still necessary when
`add_custom_target`, `add_executable`, `add_library`, etc. are used. A
LLVM_SUBPROJECT_TITLE definition is used for that in each subproject's
root CMakeLists.txt.

Author: Meinersbur

flang/CMakeLists.txt

@@ -1,4 +1,5 @@
 cmake_minimum_required(VERSION 3.20.0)
+set(LLVM_SUBPROJECT_TITLE "Flang")
 
 if(NOT DEFINED LLVM_COMMON_CMAKE_UTILS)
   set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake)
@@ -481,7 +482,7 @@ endif()
 
 # Custom target to install Flang libraries.
 add_custom_target(flang-libraries)
-set_target_properties(flang-libraries PROPERTIES FOLDER "Misc")
+set_target_properties(flang-libraries PROPERTIES FOLDER "Flang/Meta")
 
 if (NOT LLVM_ENABLE_IDE)
   add_llvm_install_targets(install-flang-libraries

flang/cmake/modules/AddFlang.cmake

@@ -94,13 +94,12 @@ function(add_flang_library name)
     add_custom_target(${name})
   endif()
 
-  set_target_properties(${name} PROPERTIES FOLDER "Flang libraries")
+  set_target_properties(${name} PROPERTIES FOLDER "Flang/Libraries")
   set_flang_windows_version_resource_properties(${name})
 endfunction(add_flang_library)
 
 macro(add_flang_executable name)
   add_llvm_executable(${name} ${ARGN})
-  set_target_properties(${name} PROPERTIES FOLDER "Flang executables")
   set_flang_windows_version_resource_properties(${name})
 endmacro(add_flang_executable)
 

flang/docs/CMakeLists.txt

@@ -79,7 +79,7 @@ if (LLVM_ENABLE_DOXYGEN)
     COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/doxygen.cfg
     WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
     COMMENT "Generating flang doxygen documentation." VERBATIM)
-
+  set_target_properties(doxygen-flang PROPERTIES FOLDER "Flang/Docs")
   if (LLVM_BUILD_DOCS)
    add_dependencies(doxygen doxygen-flang)
   endif()

flang/include/flang/Optimizer/Dialect/CMakeLists.txt

@@ -33,6 +33,7 @@ mlir_tablegen(CanonicalizationPatterns.inc -gen-rewriters)
 add_public_tablegen_target(CanonicalizationPatternsIncGen)
 
 add_custom_target(flang-doc)
+set_target_properties(flang-doc PROPERTIES FOLDER "Flang/Docs")
 set(dialect_doc_filename "FIRLangRef")
 
 set(LLVM_TARGET_DEFINITIONS FIROps.td)
@@ -45,4 +46,5 @@ add_custom_command(
                 ${GEN_DOC_FILE}
         DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${dialect_doc_filename}.md)
 add_custom_target(${dialect_doc_filename}DocGen DEPENDS ${GEN_DOC_FILE})
+set_target_properties(${dialect_doc_filename}DocGen PROPERTIES FOLDER "Flang/Tablegenning/Docs")
 add_dependencies(flang-doc ${dialect_doc_filename}DocGen)

flang/runtime/CMakeLists.txt

@@ -271,21 +271,26 @@ else()
     LINK_LIBS
     FortranDecimal.static
     INSTALL_WITH_TOOLCHAIN)
+  set_target_properties(FortranRuntime.static PROPERTIES FOLDER "Flang/Runtime Libraries")
   set(CMAKE_MSVC_RUNTIME_LIBRARY MultiThreadedDLL)
   add_flang_library(FortranRuntime.dynamic ${sources}
     LINK_LIBS
     FortranDecimal.dynamic
     INSTALL_WITH_TOOLCHAIN)
+  set_target_properties(FortranRuntime.dynamic PROPERTIES FOLDER "Flang/Runtime Libraries")
   set(CMAKE_MSVC_RUNTIME_LIBRARY MultiThreadedDebug)
   add_flang_library(FortranRuntime.static_dbg ${sources}
     LINK_LIBS
     FortranDecimal.static_dbg
     INSTALL_WITH_TOOLCHAIN)
+  set_target_properties(FortranRuntime.static_dbg PROPERTIES FOLDER "Flang/Runtime Libraries")
   set(CMAKE_MSVC_RUNTIME_LIBRARY MultiThreadedDebugDLL)
   add_flang_library(FortranRuntime.dynamic_dbg ${sources}
     LINK_LIBS
     FortranDecimal.dynamic_dbg
     INSTALL_WITH_TOOLCHAIN)
+  set_target_properties(FortranRuntime.dynamic_dbg PROPERTIES FOLDER "Flang/Runtime Libraries")
   add_dependencies(FortranRuntime FortranRuntime.static FortranRuntime.dynamic
     FortranRuntime.static_dbg FortranRuntime.dynamic_dbg)
 endif()
+set_target_properties(FortranRuntime PROPERTIES FOLDER "Flang/Runtime Libraries")

flang/test/CMakeLists.txt

@@ -83,13 +83,14 @@ if (LLVM_BUILD_EXAMPLES)
 endif ()
 
 add_custom_target(flang-test-depends DEPENDS ${FLANG_TEST_DEPENDS})
+set_target_properties(flang-test-depends PROPERTIES FOLDER "Flang/Meta")
 
 add_lit_testsuite(check-flang "Running the Flang regression tests"
   ${CMAKE_CURRENT_BINARY_DIR}
   PARAMS ${FLANG_TEST_PARAMS}
   DEPENDS ${FLANG_TEST_DEPENDS}
 )
-set_target_properties(check-flang PROPERTIES FOLDER "Tests")
+set_target_properties(check-flang PROPERTIES FOLDER "Flang/Meta")
 
 # In case of standalone builds.
 if (FLANG_STANDALONE_BUILD)

flang/tools/f18/CMakeLists.txt

@@ -96,6 +96,7 @@ if (NOT CMAKE_CROSSCOMPILING)
 endif()
 
 add_custom_target(module_files ALL DEPENDS ${MODULE_FILES})
+set_target_properties(module_files PROPERTIES FOLDER "Flang/Resources")
 
 # TODO Move this to a more suitable location
 # Copy the generated omp_lib.h header file, if OpenMP support has been configured.

flang/unittests/CMakeLists.txt

@@ -8,7 +8,7 @@ if (FLANG_EXPERIMENTAL_CUDA_RUNTIME)
 endif()
 
 add_custom_target(FlangUnitTests)
-set_target_properties(FlangUnitTests PROPERTIES FOLDER "Flang Unit Tests")
+set_target_properties(FlangUnitTests PROPERTIES FOLDER "Flang/Tests")
 
 function(add_flang_unittest_offload_properties target)
   # Set CUDA_RESOLVE_DEVICE_SYMBOLS.
@@ -55,6 +55,7 @@ function(add_flang_nongtest_unittest test_name)
   endif()
 
   add_executable(${test_name}${suffix} ${test_name}.cpp)
+  set_target_properties(${test_name}${suffix} PROPERTIES FOLDER "Flang/Tests/Unit")
 
   if (LLVM_LINK_LLVM_DYLIB AND NOT ARG_DISABLE_LLVM_LINK_LLVM_DYLIB)
     set(llvm_libs LLVM)

flang/unittests/Evaluate/CMakeLists.txt

@@ -3,6 +3,7 @@ add_library(FortranEvaluateTesting
   testing.cpp
   fp-testing.cpp
 )
+set_target_properties(FortranEvaluateTesting PROPERTIES FOLDER "Flang/Tests")
 if (LLVM_LINK_LLVM_DYLIB)
   set(llvm_libs LLVM)
 else()