Temp workaround for arch optimizations on Apple M1

Author: ruberith

CMake/Common.cmake

@@ -63,6 +63,9 @@ if (UNIX OR MINGW)
 	if (CI_BUILD)
 		set(CMAKE_CXX_FLAGS_RELEASE "-O3 -DNDEBUG -march=x86-64")
 		set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O3 -DNDEBUG -march=x86-64")
+	elseif (APPLE AND CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL "arm64")
+		set(CMAKE_CXX_FLAGS_RELEASE "-O3 -DNDEBUG -mcpu=apple-m1")
+		set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O3 -DNDEBUG -mcpu=apple-m1")
 	else()
 		set(CMAKE_CXX_FLAGS_RELEASE "-O3 -DNDEBUG -march=native")
 		set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O3 -DNDEBUG -march=native")