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[5.9][CMake] Use WMO for release builds #1699

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[5.9][CMake] Use WMO for release builds #1699

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7 changes: 7 additions & 0 deletions cmake/modules/AddSwiftHostLibrary.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -56,6 +56,13 @@ function(add_swift_host_library name)
-emit-module-interface-path;${module_interface_file}
>)

if(NOT CMAKE_BUILD_TYPE STREQUAL "Debug")
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Please pull in #1705 if this is going to be merged.

target_compile_options(${name} PRIVATE
$<$<COMPILE_LANGUAGE:Swift>:
-wmo
>)
endif()

# NOTE: workaround for CMake not setting up include flags yet
set_target_properties(${name} PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES ${module_dir}
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