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| author | Bill Wendling <isanbard@gmail.com> | 2010-06-29 21:24:00 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2010-06-29 21:24:00 +0000 |
| commit | 207855cff9b4811004b9720f28a5bd0adf3784b7 (patch) | |
| tree | 341cb2f4392d2d0af87f4cd7b694a87333c47cc7 /lib/VMCore | |
| parent | 147b7cad2fefa3260e2da8f7cfe31ac07f352ceb (diff) | |
| download | external_llvm-207855cff9b4811004b9720f28a5bd0adf3784b7.zip external_llvm-207855cff9b4811004b9720f28a5bd0adf3784b7.tar.gz external_llvm-207855cff9b4811004b9720f28a5bd0adf3784b7.tar.bz2 | |
Introducing the "linker_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. 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".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107205 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/VMCore')
| -rw-r--r-- | lib/VMCore/AsmWriter.cpp | 1 | ||||
| -rw-r--r-- | lib/VMCore/Core.cpp | 5 |
2 files changed, 6 insertions, 0 deletions
diff --git a/lib/VMCore/AsmWriter.cpp b/lib/VMCore/AsmWriter.cpp index 057ad91..8b6aabb 100644 --- a/lib/VMCore/AsmWriter.cpp +++ b/lib/VMCore/AsmWriter.cpp @@ -1419,6 +1419,7 @@ static void PrintLinkage(GlobalValue::LinkageTypes LT, case GlobalValue::ExternalLinkage: break; case GlobalValue::PrivateLinkage: Out << "private "; break; case GlobalValue::LinkerPrivateLinkage: Out << "linker_private "; break; + case GlobalValue::LinkerWeakLinkage: Out << "linker_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..faf62ad 100644 --- a/lib/VMCore/Core.cpp +++ b/lib/VMCore/Core.cpp @@ -1058,6 +1058,8 @@ LLVMLinkage LLVMGetLinkage(LLVMValueRef Global) { return LLVMPrivateLinkage; case GlobalValue::LinkerPrivateLinkage: return LLVMLinkerPrivateLinkage; + case GlobalValue::LinkerWeakLinkage: + return LLVMLinkerWeakLinkage; case GlobalValue::DLLImportLinkage: return LLVMDLLImportLinkage; case GlobalValue::DLLExportLinkage: @@ -1108,6 +1110,9 @@ void LLVMSetLinkage(LLVMValueRef Global, LLVMLinkage Linkage) { case LLVMLinkerPrivateLinkage: GV->setLinkage(GlobalValue::LinkerPrivateLinkage); break; + case LLVMLinkerWeakLinkage: + GV->setLinkage(GlobalValue::LinkerWeakLinkage); + break; case LLVMDLLImportLinkage: GV->setLinkage(GlobalValue::DLLImportLinkage); break; |