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cmake: Enable the lto cache when building with -flto=thin on darwin

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285450 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Justin Bogner 2016-10-28 20:48:47 +00:00
parent 0e18bbf16a
commit 10df7e9f9c
1 changed files with 5 additions and 0 deletions
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5
cmake/modules/HandleLLVMOptions.cmake
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@ -647,6 +647,11 @@ string(TOUPPER "${LLVM_ENABLE_LTO}" uppercase_LLVM_ENABLE_LTO)
if(uppercase_LLVM_ENABLE_LTO STREQUAL "THIN")
append("-flto=thin" CMAKE_CXX_FLAGS CMAKE_C_FLAGS
CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS)
# On darwin, enable the lto cache. This improves initial build time a little
# since we re-link a lot of the same objects, and significantly improves
# incremental build time.
append_if(APPLE "-Wl,-cache_path_lto,${PROJECT_BINARY_DIR}/lto.cache"
CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS)
elseif(uppercase_LLVM_ENABLE_LTO STREQUAL "FULL")
append("-flto=full" CMAKE_CXX_FLAGS CMAKE_C_FLAGS
CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS)