Add plumbing for the `linker_private' linkage type. This type is meant for

"private" symbols which the assember shouldn't strip, but which the linker may
remove after evaluation. This is mostly useful for Objective-C metadata.

This is plumbing, so we don't have a use of it yet. More to come, etc.

llvm-svn: 76385

1 files changed, 3 insertions, 0 deletions

diff --git a/llvm/lib/Linker/LinkModules.cpp b/llvm/lib/Linker/LinkModules.cpp
index 85ba9330737..afc06e4e47a 100644
--- a/llvm/lib/Linker/LinkModules.cpp
+++ b/llvm/lib/Linker/LinkModules.cpp
@@ -709,6 +709,9 @@ CalculateAliasLinkage(const GlobalValue *SGV, const GlobalValue *DGV) {
   else if (SL == GlobalValue::InternalLinkage &&
            DL == GlobalValue::InternalLinkage)
     return GlobalValue::InternalLinkage;
+  else if (SL == GlobalValue::LinkerPrivateLinkage &&
+           DL == GlobalValue::LinkerPrivateLinkage)
+    return GlobalValue::LinkerPrivateLinkage;
   else {
     assert (SL == GlobalValue::PrivateLinkage &&
             DL == GlobalValue::PrivateLinkage && "Unexpected linkage type");