Add support for the weak linkage specifier


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9000 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/vim/llvm.vim b/utils/vim/llvm.vim
index d348911..92971c3 100644
--- a/utils/vim/llvm.vim
+++ b/utils/vim/llvm.vim
@@ -27,7 +27,7 @@
 syn keyword llvmStatement begin end true false
 syn keyword llvmStatement declare global constant const
 syn keyword llvmStatement internal uninitialized external implementation
-syn keyword llvmStatement linkonce appending
+syn keyword llvmStatement linkonce weak appending
 syn keyword llvmStatement null to except not target endian pointersize
 syn keyword llvmStatement big little volatile