[llvm-objcopy] Allow 'protected' visibility to be set when using
add-symbol

Reviewers: Maskray, rupprecht

Differential Revision: https://reviews.llvm.org/D65891

llvm-svn: 368982
diff --git a/llvm/tools/llvm-objcopy/CopyConfig.cpp b/llvm/tools/llvm-objcopy/CopyConfig.cpp
index 3cd9566..67ba38b 100644
--- a/llvm/tools/llvm-objcopy/CopyConfig.cpp
+++ b/llvm/tools/llvm-objcopy/CopyConfig.cpp
@@ -232,6 +232,7 @@
             .CaseLower("weak", [&SI] { SI.Bind = ELF::STB_WEAK; })
             .CaseLower("default", [&SI] { SI.Visibility = ELF::STV_DEFAULT; })
             .CaseLower("hidden", [&SI] { SI.Visibility = ELF::STV_HIDDEN; })
+            .CaseLower("protected", [&SI] { SI.Visibility = ELF::STV_PROTECTED; })
             .CaseLower("file", [&SI] { SI.Type = ELF::STT_FILE; })
             .CaseLower("section", [&SI] { SI.Type = ELF::STT_SECTION; })
             .CaseLower("object", [&SI] { SI.Type = ELF::STT_OBJECT; })