[sourcekit] Identify xpc service by toolchain instead of sdk

rdar://72310494

Author: benlangmuir

tools/SourceKit/CMakeLists.txt

@@ -31,9 +31,10 @@ configure_file(
 set(SOURCEKIT_DEPLOYMENT_OS "${SWIFT_HOST_VARIANT}")
 set(SOURCEKIT_DEPLOYMENT_TARGET "${SWIFT_SDK_${SWIFT_HOST_VARIANT_SDK}_DEPLOYMENT_VERSION}")
 
-STRING(TOLOWER "${SWIFT_PRIMARY_VARIANT_SDK}" SOURCEKIT_PLATFORM_NAME)
-# Remove '_simulator' from the name if it exists
-STRING(REPLACE "_simulator" "" SOURCEKIT_PLATFORM_NAME "${SOURCEKIT_PLATFORM_NAME}")
+set(SOURCEKIT_TOOLCHAIN_NAME "${SWIFT_DARWIN_XCRUN_TOOLCHAIN}")
+if("${SOURCEKIT_TOOLCHAIN_NAME}" MATCHES "XcodeDefault")
+  set(SOURCEKIT_TOOLCHAIN_NAME "default")
+endif()
 
 if("${CMAKE_SYSTEM_NAME}" STREQUAL "Darwin" AND NOT CMAKE_CROSSCOMPILING)
   set(CMAKE_OSX_SYSROOT "${SWIFT_SDK_${SWIFT_HOST_VARIANT_SDK}_PATH}")

tools/SourceKit/cmake/modules/AddSwiftSourceKit.cmake

@@ -333,7 +333,7 @@ macro(add_sourcekit_xpc_service name framework_target)
   endif()
 
   set(XPCSERVICE_NAME ${name})
-  set(XPCSERVICE_IDENTIFIER "com.apple.${name}.${SOURCEKIT_VERSION_STRING}_${SOURCEKIT_PLATFORM_NAME}")
+  set(XPCSERVICE_IDENTIFIER "com.apple.${name}.${SOURCEKIT_VERSION_STRING}_${SOURCEKIT_TOOLCHAIN_NAME}")
   set(XPCSERVICE_BUNDLE_VERSION "${SOURCEKIT_VERSION_STRING}")
   set(XPCSERVICE_SHORT_VERSION_STRING "1.0")
   configure_file(

tools/SourceKit/tools/sourcekitd/bin/XPC/Client/CMakeLists.txt

@@ -16,7 +16,7 @@ add_sourcekit_framework(sourcekitd
 )
 target_link_libraries(sourcekitd PRIVATE sourcekitdAPI)
 
-add_definitions(-DSOURCEKIT_XPCSERVICE_IDENTIFIER="com.apple.SourceKitService.${SOURCEKIT_VERSION_STRING}_${SOURCEKIT_PLATFORM_NAME}")
+add_definitions(-DSOURCEKIT_XPCSERVICE_IDENTIFIER="com.apple.SourceKitService.${SOURCEKIT_VERSION_STRING}_${SOURCEKIT_TOOLCHAIN_NAME}")
 
 if (SOURCEKIT_BUILT_STANDALONE)
   # Create the symlink necessary to find the swift stdlib.