================
@@ -1621,8 +1621,15 @@ function(add_unittest test_suite test_name)
# The runtime benefits of LTO don't outweight the compile time costs for
tests.
if(LLVM_ENABLE_LTO)
if((UNIX OR MINGW) AND LINKER_IS_LLD)
- set_property(TARGET ${test_name} APPEND_STRING PROPERTY
- LINK_FLAGS " -Wl,--lto-O0")
+ if(LLVM_ENABLE_FATLTO)
+ # When using FatLTO, just use relocatable linking.
+ set_property(TARGET ${test_name} APPEND_STRING PROPERTY
+ LINK_FLAGS " -Wl,--no-fat-lto-objects")
+ set_property(TARGET ${test_name} APPEND_STRING PROPERTY COMPILE_FLAGS
" -fno-lto")
----------------
petrhosek wrote:
What's the motivation for including `-fno-lto` in compile flags here?
https://github.com/llvm/llvm-project/pull/80480
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