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-rw-r--r--llvm/cmake/modules/HandleLLVMOptions.cmake7
1 files changed, 7 insertions, 0 deletions
diff --git a/llvm/cmake/modules/HandleLLVMOptions.cmake b/llvm/cmake/modules/HandleLLVMOptions.cmake
index 9b6a590920e..99b23180bbb 100644
--- a/llvm/cmake/modules/HandleLLVMOptions.cmake
+++ b/llvm/cmake/modules/HandleLLVMOptions.cmake
@@ -656,6 +656,13 @@ append_if(LLVM_BUILD_INSTRUMENTED "-fprofile-instr-generate"
CMAKE_EXE_LINKER_FLAGS
CMAKE_SHARED_LINKER_FLAGS)
+option(LLVM_ENABLE_LTO "Enable link-time optimization" OFF)
+append_if(LLVM_ENABLE_LTO "-flto"
+ CMAKE_CXX_FLAGS
+ CMAKE_C_FLAGS
+ CMAKE_EXE_LINKER_FLAGS
+ CMAKE_SHARED_LINKER_FLAGS)
+
# Plugin support
# FIXME: Make this configurable.
if(WIN32 OR CYGWIN)
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