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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76385 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachOWriter.cpp b/lib/CodeGen/MachOWriter.cpp
index d19b218..4e24c7c 100644
--- a/lib/CodeGen/MachOWriter.cpp
+++ b/lib/CodeGen/MachOWriter.cpp
@@ -764,6 +764,9 @@
   case GlobalValue::PrivateLinkage:
     GVName = TAI->getPrivateGlobalPrefix() + name;
     break;
+  case GlobalValue::LinkerPrivateLinkage:
+    GVName = TAI->getLessPrivateGlobalPrefix() + name;
+    break;
   case GlobalValue::InternalLinkage:
     GVName = TAI->getGlobalPrefix() + name;
     break;