[libclc] Revise IDE folder structure (#89746)

Summary:
Reviewers of #89153 suggested to break up the patch into per-subproject
patches. This is the libclc part. See #89153 for the entire series and
motivation.

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.

Test Plan: 

Reviewers: 

Subscribers: 

Tasks: 

Tags: 


Differential Revision: https://phabricator.intern.facebook.com/D60250967

Author: Meinersbur

libclc/CMakeLists.txt

@@ -3,6 +3,7 @@ cmake_minimum_required(VERSION 3.20.0)
 if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
   project(libclc VERSION 0.2.0 LANGUAGES CXX C)
 endif()
+set(LLVM_SUBPROJECT_TITLE "libclc")
 
 set(CMAKE_CXX_STANDARD 17)
 
@@ -230,12 +231,14 @@ add_custom_command(
   COMMAND ${Python3_EXECUTABLE} ${script_loc} > convert.cl
   DEPENDS ${script_loc} )
 add_custom_target( "generate_convert.cl" DEPENDS convert.cl )
+set_target_properties( "generate_convert.cl" PROPERTIES FOLDER "libclc/Sourcegenning" )
 
 add_custom_command(
   OUTPUT clspv-convert.cl
   COMMAND ${Python3_EXECUTABLE} ${script_loc} --clspv > clspv-convert.cl
   DEPENDS ${script_loc} )
 add_custom_target( "clspv-generate_convert.cl" DEPENDS clspv-convert.cl )
+set_target_properties( "clspv-generate_convert.cl" PROPERTIES FOLDER "libclc/Sourcegenning" )
 
 enable_testing()
 
@@ -388,6 +391,7 @@ foreach( t ${LIBCLC_TARGETS_TO_BUILD} )
     add_custom_target( ${builtins_comp_lib_tgt}
       DEPENDS ${bytecode_files}
     )
+    set_target_properties( ${builtins_comp_lib_tgt} PROPERTIES FOLDER "libclc/Device IR/Comp" )
 
     set( builtins_link_lib_tgt builtins.link.${arch_suffix} )
     link_bc(
@@ -405,6 +409,7 @@ foreach( t ${LIBCLC_TARGETS_TO_BUILD} )
         DEPENDS ${builtins_link_lib} ${builtins_link_lib_tgt}
       )
       add_custom_target( "prepare-${spv_suffix}" ALL DEPENDS "${spv_suffix}" )
+      set_target_properties( "prepare-${spv_suffix}" PROPERTIES FOLDER "libclc/Device IR/Prepare" )
       install( FILES ${CMAKE_CURRENT_BINARY_DIR}/${spv_suffix}
          DESTINATION "${CMAKE_INSTALL_DATADIR}/clc" )
     else()
@@ -421,6 +426,7 @@ foreach( t ${LIBCLC_TARGETS_TO_BUILD} )
       )
       set_target_properties( ${builtins_opt_lib_tgt}
         PROPERTIES TARGET_FILE ${builtins_opt_lib_tgt}.bc
+                   FOLDER "libclc/Device IR/Opt"
       )
 
       set( builtins_opt_lib $<TARGET_PROPERTY:${builtins_opt_lib_tgt},TARGET_FILE> )
@@ -431,6 +437,7 @@ foreach( t ${LIBCLC_TARGETS_TO_BUILD} )
         COMMAND ${prepare_builtins_exe} -o ${obj_suffix} ${builtins_opt_lib}
         DEPENDS ${builtins_opt_lib} ${builtins_opt_lib_tgt} ${prepare_builtins_target} )
       add_custom_target( prepare-${obj_suffix} ALL DEPENDS ${obj_suffix} )
+      set_target_properties( "prepare-${obj_suffix}" PROPERTIES FOLDER "libclc/Device IR/Prepare" )
 
       # nvptx-- targets don't include workitem builtins
       if( NOT clang_triple MATCHES ".*ptx.*--$" )
@@ -445,6 +452,7 @@ foreach( t ${LIBCLC_TARGETS_TO_BUILD} )
         add_custom_target( ${alias_suffix} ALL
           COMMAND ${CMAKE_COMMAND} -E create_symlink ${obj_suffix} ${alias_suffix}
           DEPENDS prepare-${obj_suffix} )
+        set_target_properties( "${alias_suffix}" PROPERTIES FOLDER "libclc/Device IR/Aliases" )
         install( FILES ${CMAKE_CURRENT_BINARY_DIR}/${alias_suffix} DESTINATION "${CMAKE_INSTALL_DATADIR}/clc" )
       endforeach( a )
     endif()

libclc/cmake/modules/AddLibclc.cmake

@@ -112,7 +112,10 @@ function(link_bc)
   )
 
   add_custom_target( ${ARG_TARGET} ALL DEPENDS ${ARG_TARGET}.bc )
-  set_target_properties( ${ARG_TARGET} PROPERTIES TARGET_FILE ${ARG_TARGET}.bc )
+  set_target_properties( ${ARG_TARGET} PROPERTIES
+    TARGET_FILE ${ARG_TARGET}.bc
+    FOLDER "libclc/Device IR/Linking"
+  )
 endfunction()
 
 # Decomposes and returns variables based on a libclc triple and architecture