Merge pull request #78667 from edymtt/edymtt/change-minsize-rel-flags-for-apple-platforms

[CMake] Update MinSizeRel configuration for Apple platforms...

Author: edymtt

Runtimes/Core/cmake/caches/Vendors/Apple/apple-common.cmake

@@ -12,3 +12,7 @@ set(SwiftCore_ENABLE_VECTOR_TYPES ON CACHE BOOL "")
 set(SwiftCore_ENABLE_RUNTIME_FUNCTION_COUNTERS ON CACHE BOOL "")
 set(SwiftCore_ENABLE_BACKDEPLOYMENT_SUPPORT ON CACHE BOOL "")
 set(SwiftCore_ENABLE_FILESYSTEM_SUPPORT ON CACHE BOOL "")
+
+set(CMAKE_CXX_FLAGS_MINSIZEREL "-Os -g -DNDEBUG" CACHE STRING "")
+set(CMAKE_C_FLAGS_MINSIZEREL "-Os -g -DNDEBUG" CACHE STRING "")
+set(CMAKE_Swift_FLAGS_MINSIZEREL "-Osize -g" CACHE STRING "")

Runtimes/Core/cmake/caches/Vendors/Apple/arm64-BridgeOS.cmake

@@ -8,5 +8,6 @@ set(CMAKE_Swift_COMPILER_TARGET "arm64-apple-bridgeos${CMAKE_OSX_DEPLOYMENT_TARG
 
 set(SwiftCore_ARCH_SUBDIR arm64)
 set(SwiftCore_PLATFORM_SUBDIR freestanding)
+set(CMAKE_BUILD_TYPE MinSizeRel CACHE STRING "")
 
 include("${CMAKE_CURRENT_LIST_DIR}/apple-common.cmake")

Runtimes/Core/core/CMakeLists.txt

@@ -283,9 +283,14 @@ target_compile_options(swiftCore PRIVATE
   "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-Xfrontend -disable-autolinking-runtime-compatibility-concurrency>"
   "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-Xfrontend -disable-objc-attr-requires-foundation-module>"
   "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-Xfrontend -require-explicit-availability=ignore>"
-  "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-Xfrontend -prespecialize-generic-metadata>"
-  "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-Xllvm -sil-inline-generics>"
-  "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-Xllvm -sil-partial-specialization>")
+  "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-Xfrontend -prespecialize-generic-metadata>")
+
+if(NOT "${CMAKE_BUILD_TYPE}" STREQUAL "MinSizeRel")
+  # Using these in MinSizeRel would result in a 15% increase in the binary size
+  target_compile_options(swiftCore PRIVATE
+    "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-Xllvm -sil-inline-generics>"
+    "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-Xllvm -sil-partial-specialization>")
+endif()
 
 target_compile_definitions(swiftCore PRIVATE
   $<$<BOOL:${SwiftCore_ENABLE_REFLECTION}>:-DSWIFT_ENABLE_REFLECTION>