Implement the "linker_private_weak" linkage type. This will be used for
Objective-C metadata types which should be marked as "weak", but which the
linker will remove upon final linkage. However, this linkage isn't specific to
Objective-C.
For example, the "objc_msgSend_fixup_alloc" symbol is defined like this:
.globl l_objc_msgSend_fixup_alloc
.weak_definition l_objc_msgSend_fixup_alloc
.section __DATA, __objc_msgrefs, coalesced
.align 3
l_objc_msgSend_fixup_alloc:
.quad _objc_msgSend_fixup
.quad L_OBJC_METH_VAR_NAME_1
This is different from the "linker_private" linkage type, because it can't have
the metadata defined with ".weak_definition".
Currently only supported on Darwin platforms.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107433 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/VMCore/AsmWriter.cpp b/lib/VMCore/AsmWriter.cpp
index 057ad91..e98636b 100644
--- a/lib/VMCore/AsmWriter.cpp
+++ b/lib/VMCore/AsmWriter.cpp
@@ -1419,6 +1419,9 @@
case GlobalValue::ExternalLinkage: break;
case GlobalValue::PrivateLinkage: Out << "private "; break;
case GlobalValue::LinkerPrivateLinkage: Out << "linker_private "; break;
+ case GlobalValue::LinkerPrivateWeakLinkage:
+ Out << "linker_private_weak ";
+ break;
case GlobalValue::InternalLinkage: Out << "internal "; break;
case GlobalValue::LinkOnceAnyLinkage: Out << "linkonce "; break;
case GlobalValue::LinkOnceODRLinkage: Out << "linkonce_odr "; break;
diff --git a/lib/VMCore/Core.cpp b/lib/VMCore/Core.cpp
index 295d148..ca1a399 100644
--- a/lib/VMCore/Core.cpp
+++ b/lib/VMCore/Core.cpp
@@ -1058,6 +1058,8 @@
return LLVMPrivateLinkage;
case GlobalValue::LinkerPrivateLinkage:
return LLVMLinkerPrivateLinkage;
+ case GlobalValue::LinkerPrivateWeakLinkage:
+ return LLVMLinkerPrivateWeakLinkage;
case GlobalValue::DLLImportLinkage:
return LLVMDLLImportLinkage;
case GlobalValue::DLLExportLinkage:
@@ -1108,6 +1110,9 @@
case LLVMLinkerPrivateLinkage:
GV->setLinkage(GlobalValue::LinkerPrivateLinkage);
break;
+ case LLVMLinkerPrivateWeakLinkage:
+ GV->setLinkage(GlobalValue::LinkerPrivateWeakLinkage);
+ break;
case LLVMDLLImportLinkage:
GV->setLinkage(GlobalValue::DLLImportLinkage);
break;