[openmp] Revise IDE folder structure (llvm#89750)

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.

openmp/CMakeLists.txt

@@ -1,4 +1,5 @@
 cmake_minimum_required(VERSION 3.20.0)
+set(LLVM_SUBPROJECT_TITLE "OpenMP")
 
 set(LLVM_COMMON_CMAKE_UTILS ${CMAKE_CURRENT_SOURCE_DIR}/../cmake)
 

openmp/docs/CMakeLists.txt

@@ -78,6 +78,7 @@ if (LLVM_ENABLE_DOXYGEN)
     COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/doxygen.cfg
     WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
     COMMENT "Generating openmp doxygen documentation." VERBATIM)
+  set_target_properties(doxygen-openmp PROPERTIES FOLDER "OpenMP/Docs")
 
   if (LLVM_BUILD_DOCS)
     add_dependencies(doxygen doxygen-openmp)

openmp/runtime/cmake/LibompMicroTests.cmake

@@ -126,6 +126,7 @@ macro(libomp_test_touch_recipe test_touch_dir)
 endmacro()
 libomp_append(libomp_test_touch_env "KMP_VERSION=1")
 add_custom_target(libomp-test-touch DEPENDS ${libomp_test_touch_targets})
+set_target_properties(libomp-test-touch PROPERTIES FOLDER "OpenMP/Tests")
 if(WIN32)
   libomp_test_touch_recipe(test-touch-mt)
   libomp_test_touch_recipe(test-touch-md)
@@ -135,6 +136,7 @@ endif()
 
 # test-relo
 add_custom_target(libomp-test-relo DEPENDS test-relo/.success)
+set_target_properties(libomp-test-relo PROPERTIES FOLDER "OpenMP/Tests")
 add_custom_command(
   OUTPUT  test-relo/.success test-relo/readelf.log
   COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/test-relo
@@ -146,6 +148,7 @@ add_custom_command(
 
 # test-execstack
 add_custom_target(libomp-test-execstack DEPENDS test-execstack/.success)
+set_target_properties(libomp-test-execstack PROPERTIES FOLDER "OpenMP/Tests")
 add_custom_command(
   OUTPUT  test-execstack/.success
   COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/test-execstack
@@ -157,6 +160,7 @@ add_custom_command(
 
 # test-instr
 add_custom_target(libomp-test-instr DEPENDS test-instr/.success)
+set_target_properties(libomp-test-instr PROPERTIES FOLDER "OpenMP/Tests")
 add_custom_command(
   OUTPUT  test-instr/.success
   COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/test-instr
@@ -168,6 +172,7 @@ add_custom_command(
 
 # test-deps
 add_custom_target(libomp-test-deps DEPENDS test-deps/.success)
+set_target_properties(libomp-test-deps PROPERTIES FOLDER "OpenMP/Tests")
 set(libomp_expected_library_deps)
 if(CMAKE_SYSTEM_NAME MATCHES "FreeBSD")
   set(libomp_expected_library_deps libc.so.7 libthr.so.3 libm.so.5)

openmp/runtime/src/CMakeLists.txt

@@ -170,6 +170,7 @@ libomp_get_libflags(LIBOMP_CONFIGURED_LIBFLAGS)
 # Build libomp library. Add LLVMSupport dependency if building in-tree with libomptarget profiling enabled.
 if(OPENMP_STANDALONE_BUILD OR (NOT OPENMP_ENABLE_LIBOMP_PROFILING))
   add_library(omp ${LIBOMP_LIBRARY_KIND} ${LIBOMP_SOURCE_FILES})
+  set_property(TARGET omp PROPERTY FOLDER "OpenMP/Libraries")
   # Linking command will include libraries in LIBOMP_CONFIGURED_LIBFLAGS
   target_link_libraries(omp ${LIBOMP_CONFIGURED_LIBFLAGS} ${LIBOMP_DL_LIBS})
 else()
@@ -251,6 +252,7 @@ set(LIBOMPTARGET_OPENMP_HOST_RTL_FOLDER "${LIBOMP_LIBRARY_DIR}" CACHE STRING
 # Create *.inc before compiling any sources
 # objects depend on : .inc files
 add_custom_target(libomp-needed-headers DEPENDS kmp_i18n_id.inc kmp_i18n_default.inc)
+set_target_properties(libomp-needed-headers PROPERTIES FOLDER "OpenMP/Sourcegenning")
 add_dependencies(omp libomp-needed-headers)
 
 # Windows specific build rules
@@ -292,6 +294,7 @@ if(WIN32)
   set(LIBOMP_IMP_LIB_TARGET omp)
   set(LIBOMP_GENERATED_DEF_FILE ${LIBOMP_LIB_NAME}.def)
   add_custom_target(libomp-needed-def-file DEPENDS ${LIBOMP_GENERATED_DEF_FILE})
+  set_target_properties(libomp-needed-def-file PROPERTIES FOLDER "OpenMP/Sourcegenning")
   add_dependencies(omp libomp-needed-def-file)
 
   # Create the main def file with ordinals to use for building the runtime dll to maintain backwards compatible exports order
@@ -310,6 +313,7 @@ if(WIN32)
     # Create the auxiliary def file without ordinals to use for building the import library to import by name
     set(LIBOMPIMP_GENERATED_DEF_FILE ${LIBOMP_LIB_NAME}.imp.def)
     add_custom_target(libompimp-needed-def-file DEPENDS ${LIBOMPIMP_GENERATED_DEF_FILE})
+    set_target_properties(libompimp-needed-def-file PROPERTIES FOLDER "OpenMP/Resources")
     add_custom_command(
       OUTPUT  ${LIBOMPIMP_GENERATED_DEF_FILE}
       COMMAND ${PERL_EXECUTABLE} ${LIBOMP_TOOLS_DIR}/generate-def.pl ${LIBOMP_GDFLAGS} -D NAME=${LIBOMP_LIB_FILE} -D NOORDINALS
@@ -319,6 +323,7 @@ if(WIN32)
     # while this merely generates an import library off a def file, CMAKE still requires it to have a "source" so feed it a dummy one,
     # making it a .txt which CMAKE will filter out from the librarian (a .cpp will make lib.exe punt trying to resolve the .def symbols)
     add_library(${LIBOMP_IMP_LIB_TARGET} STATIC kmp_dummy.txt)
+    set_target_properties(${LIBOMP_IMP_LIB_TARGET} PROPERTIES FOLDER "OpenMP/Libraries")
     set_target_properties(${LIBOMP_IMP_LIB_TARGET} PROPERTIES
         PREFIX "" SUFFIX "" OUTPUT_NAME "${LIBOMP_IMP_LIB_FILE}" LINKER_LANGUAGE ${LIBOMP_LINKER_LANGUAGE}
         STATIC_LIBRARY_OPTIONS "${CMAKE_LINK_DEF_FILE_FLAG}${CMAKE_CURRENT_BINARY_DIR}/${LIBOMPIMP_GENERATED_DEF_FILE}")
@@ -354,6 +359,7 @@ elseif(${LIBOMP_FORTRAN_MODULES})
     set(ADDITIONAL_Fortran_FLAGS "-fno-range-check")
   endif()
   add_custom_target(libomp-mod ALL DEPENDS omp_lib.mod omp_lib_kinds.mod)
+  set_target_properties(libomp-mod PROPERTIES FOLDER "OpenMP/Misc")
   libomp_get_fflags(LIBOMP_CONFIGURED_FFLAGS)
   if(CMAKE_Fortran_COMPILER_SUPPORTS_F90)
     set(LIBOMP_FORTRAN_SOURCE_FILE omp_lib.F90)
@@ -379,6 +385,7 @@ endif()
 # Micro test rules for after library has been built (cmake/LibompMicroTests.cmake)
 include(LibompMicroTests)
 add_custom_target(libomp-micro-tests)
+set_target_properties(libomp-micro-tests PROPERTIES FOLDER "OpenMP/Tests")
 if(NOT ${MIC} AND NOT CMAKE_CROSSCOMPILING)
   add_dependencies(libomp-micro-tests libomp-test-touch)
 endif()