Set protocol linkage and visibility correctly and
build protocol translation table meta-data (objc2
non-fragile abi).
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63329 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGObjCMac.cpp b/lib/CodeGen/CGObjCMac.cpp
index 67db5fa..09987a2 100644
--- a/lib/CodeGen/CGObjCMac.cpp
+++ b/lib/CodeGen/CGObjCMac.cpp
@@ -3843,12 +3843,12 @@
if (Entry) {
// Already created, fix the linkage and update the initializer.
- Entry->setLinkage(llvm::GlobalValue::InternalLinkage);
+ Entry->setLinkage(llvm::GlobalValue::WeakLinkage);
Entry->setInitializer(Init);
} else {
Entry =
new llvm::GlobalVariable(ObjCTypes.ProtocolnfABITy, false,
- llvm::GlobalValue::InternalLinkage,
+ llvm::GlobalValue::WeakLinkage,
Init,
std::string("\01l_OBJC_PROTOCOL_$_")+ProtocolName,
&CGM.getModule());
@@ -3856,6 +3856,21 @@
// FIXME: Is this necessary? Why only for protocol?
Entry->setAlignment(4);
}
+ Entry->setVisibility(llvm::GlobalValue::HiddenVisibility);
+
+ // Use this protocol meta-data to build protocol list table in section
+ // __DATA, __objc_protolist
+ llvm::Type *ptype = llvm::PointerType::getUnqual(ObjCTypes.ProtocolnfABITy);
+ llvm::GlobalVariable *PTGV = new llvm::GlobalVariable(
+ ptype, false,
+ llvm::GlobalValue::WeakLinkage,
+ Entry,
+ std::string("\01l_OBJC_LABEL_PROTOCOL_$_")
+ +ProtocolName,
+ &CGM.getModule());
+ PTGV->setSection("__DATA, __objc_protolist");
+ PTGV->setVisibility(llvm::GlobalValue::HiddenVisibility);
+ UsedGlobals.push_back(PTGV);
return Entry;
}