[Offload] Do not link every target for JIT (#92013)

Summary:
The offload library supports basic JIT functionality, however we
currently link against every single target even though only AMDGPU and
NVPTX are supported. This somewhat bloats the dynamic library list, so
we should constrain it to what's actually used.

Author: jhuber6

offload/plugins-nextgen/CMakeLists.txt

@@ -16,7 +16,6 @@ add_subdirectory(common)
 function(add_target_library target_name lib_name)
   add_llvm_library(${target_name} STATIC
     LINK_COMPONENTS
-      ${LLVM_TARGETS_TO_BUILD}
       AggressiveInstCombine
       Analysis
       BinaryFormat

offload/plugins-nextgen/common/CMakeLists.txt

@@ -22,9 +22,13 @@ add_library(PluginCommon OBJECT
 add_dependencies(PluginCommon intrinsics_gen)
 
 # Only enable JIT for those targets that LLVM can support.
-string(TOUPPER "${LLVM_TARGETS_TO_BUILD}" TargetsSupported)
-foreach(Target ${TargetsSupported})
-	target_compile_definitions(PluginCommon PRIVATE "LIBOMPTARGET_JIT_${Target}")
+set(supported_jit_targets AMDGPU NVPTX)
+foreach(target IN LISTS supported_jit_targets)
+  if("${target}" IN_LIST LLVM_TARGETS_TO_BUILD)
+	  target_compile_definitions(PluginCommon PRIVATE "LIBOMPTARGET_JIT_${target}")
+    llvm_map_components_to_libnames(llvm_libs ${target})
+    target_link_libraries(PluginCommon PRIVATE ${llvm_libs})
+  endif()
 endforeach()
 
 # Include the RPC server from the `libc` project if availible.