Add support for linking SwiftSwiftDirectRuntime in Overlay build system

Addresses rdar://164174616

Author: edymtt

Runtimes/Overlay/CMakeLists.txt

@@ -59,6 +59,8 @@ option(SwiftOverlay_ENABLE_LIBRARY_EVOLUTION "Generate ABI resilient runtime lib
   ${SwiftCore_ENABLE_LIBRARY_EVOLUTION})
 option(SwiftOverlay_ENABLE_BACKDEPLOYMENT_SUPPORT "Add symbols for runtime backdeployment"
   ${SwiftCore_ENABLE_BACKDEPLOYMENT_SUPPORT})
+option(${PROJECT_NAME}_ENABLE_DIRECT_RETAIN_RELEASE "Use direct retain release in overlays"
+  ${SwiftCore_ENABLE_DIRECT_RETAIN_RELEASE})
 
 add_compile_definitions(
   $<$<BOOL:${SwiftOverlay_ENABLE_BACKDEPLOYMENT_SUPPORT}>:SWIFT_STDLIB_SUPPORT_BACK_DEPLOYMENT>)
@@ -74,6 +76,11 @@ add_compile_options(
   "$<$<AND:$<BOOL:${${PROJECT_NAME}_ENABLE_LIBRARY_EVOLUTION}>,$<COMPILE_LANGUAGE:Swift>>:-enable-library-evolution>"
   "$<$<AND:$<BOOL:${${PROJECT_NAME}_ENABLE_PRESPECIALIZATION}>,$<COMPILE_LANGUAGE:Swift>>:SHELL:-Xfrontend -prespecialize-generic-metadata>")
 
+if(${PROJECT_NAME}_ENABLE_DIRECT_RETAIN_RELEASE)
+  find_package(SwiftSwiftDirectRuntime REQUIRED)
+  add_compile_options("$<$<COMPILE_LANGUAGE:Swift>:SHELL:-Xfrontend -enable-direct-retain-release>")
+endif()
+
 include(ExperimentalFeatures)
 
 # LNK4049: symbol 'symbol' defined in 'filename.obj' is imported

Runtimes/Overlay/Cxx/CMakeLists.txt

@@ -36,6 +36,7 @@ target_compile_options(swiftCxx PRIVATE
   "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-enable-experimental-feature BuiltinModule>"
   "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-enable-experimental-feature Lifetimes>")
 target_link_libraries(swiftCxx PRIVATE
+  $<$<BOOL:${SwiftSwiftDirectRuntime_FOUND}>:swiftSwiftDirectRuntime>
   swiftCore)
 
 install(TARGETS swiftCxx

Runtimes/Overlay/Cxx/std/CMakeLists.txt

@@ -25,6 +25,7 @@ target_compile_options(swiftCxxStdlib PRIVATE
 target_link_libraries(swiftCxxStdlib PRIVATE
   $<$<BOOL:${HAVE___GLIBCXX__}>:libstdcxx>
   $<$<NOT:$<PLATFORM_ID:Darwin>>:cxxshim>
+  $<$<BOOL:${SwiftSwiftDirectRuntime_FOUND}>:swiftSwiftDirectRuntime>
   swiftCxx
   swiftCore
   swift_Builtin_float

Runtimes/Overlay/clang/CMakeLists.txt

@@ -12,6 +12,7 @@ target_compile_options(swift_Builtin_float PRIVATE
   $<$<COMPILE_LANGUAGE:Swift>:-autolink-force-load>)
 target_link_libraries(swift_Builtin_float PRIVATE
   $<$<PLATFORM_ID:Windows>:ClangModules>
+  $<$<BOOL:${SwiftSwiftDirectRuntime_FOUND}>:swiftSwiftDirectRuntime>
   swiftCore)
 
 install(TARGETS swift_Builtin_float