diff options
| author | Bill Wendling <isanbard@gmail.com> | 2010-07-01 21:55:59 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2010-07-01 21:55:59 +0000 |
| commit | 5e721d768254a920b78b9129d79a84c0163cb3f4 (patch) | |
| tree | 53384abb48251190c5f1398defc48763367a7355 /lib/Transforms/IPO/MergeFunctions.cpp | |
| parent | 0f66d4be04787906fb3a40ff572bc8c16a41bb96 (diff) | |
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
Diffstat (limited to 'lib/Transforms/IPO/MergeFunctions.cpp')
| -rw-r--r-- | lib/Transforms/IPO/MergeFunctions.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/Transforms/IPO/MergeFunctions.cpp b/lib/Transforms/IPO/MergeFunctions.cpp index 622a9b529c..74bb2c85ce 100644 --- a/lib/Transforms/IPO/MergeFunctions.cpp +++ b/lib/Transforms/IPO/MergeFunctions.cpp @@ -535,6 +535,7 @@ static LinkageCategory categorize(const Function *F) { case GlobalValue::WeakAnyLinkage: case GlobalValue::WeakODRLinkage: case GlobalValue::ExternalWeakLinkage: + case GlobalValue::LinkerPrivateWeakLinkage: return ExternalWeak; case GlobalValue::ExternalLinkage: |