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d4ee3920c9
LTO was always creating an empty llvm.compiler.used. With this patch we now first check if there is anything to be added first. Unfortunately, there is no good way to test libLTO in isolation as it needs gold or ld64, but there are bots doing LTO builds that found this problem. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180202 91177308-0d34-0410-b5e6-96231b3b80d8
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