Changed CGObjCMac.cpp to add the marker externally_initialized to SELECTOR_REFERENCES in both the fragile and non-fragile API.

This is to ensure that GlobalOpt in LLVM does not attempt to look through a
selector reference to a method var name at compile time.

I also added a test/updated old tests that need to recognize the new keyword.

rdar://12580965.

llvm-svn: 174461

1 files changed, 2 insertions, 0 deletions

diff --git a/clang/lib/CodeGen/CGObjCMac.cpp b/clang/lib/CodeGen/CGObjCMac.cpp
index 5ce6cd0ce5b..2d67a77cfaa 100644
--- a/clang/lib/CodeGen/CGObjCMac.cpp
+++ b/clang/lib/CodeGen/CGObjCMac.cpp
@@ -4415,6 +4415,7 @@ llvm::Value *CGObjCMac::EmitSelector(CGBuilderTy &Builder, Selector Sel,
       CreateMetadataVar("\01L_OBJC_SELECTOR_REFERENCES_", Casted,
                         "__OBJC,__message_refs,literal_pointers,no_dead_strip",
                         4, true);
+    Entry->setExternallyInitialized(true);
   }
 
   if (lvalue)
@@ -6761,6 +6762,7 @@ llvm::Value *CGObjCNonFragileABIMac::EmitSelector(CGBuilderTy &Builder,
       new llvm::GlobalVariable(CGM.getModule(), ObjCTypes.SelectorPtrTy, false,
                                llvm::GlobalValue::InternalLinkage,
                                Casted, "\01L_OBJC_SELECTOR_REFERENCES_");
+    Entry->setExternallyInitialized(true);
     Entry->setSection("__DATA, __objc_selrefs, literal_pointers, no_dead_strip");
     CGM.AddUsedGlobal(Entry);
   }