diff --git a/lib/AsmParser/llvmAsmParser.y b/lib/AsmParser/llvmAsmParser.y
index a239124b1fb..9a22c1bef5c 100644
--- a/lib/AsmParser/llvmAsmParser.y
+++ b/lib/AsmParser/llvmAsmParser.y
@@ -1058,7 +1058,7 @@ Module *llvm::RunVMAsmParser(llvm::MemoryBuffer *MB) {
 %token ZEROINITIALIZER TRUETOK FALSETOK BEGINTOK ENDTOK
 %token DECLARE DEFINE GLOBAL CONSTANT SECTION ALIAS VOLATILE THREAD_LOCAL
 %token TO DOTDOTDOT NULL_TOK UNDEF INTERNAL LINKONCE WEAK APPENDING
-%token DLLIMPORT DLLEXPORT EXTERN_WEAK
+%token DLLIMPORT DLLEXPORT EXTERN_WEAK COMMON
 %token OPAQUE EXTERNAL TARGET TRIPLE ALIGN ADDRSPACE
 %token DEPLIBS CALL TAIL ASM_TOK MODULE SIDEEFFECT
 %token CC_TOK CCC_TOK FASTCC_TOK COLDCC_TOK X86_STDCALLCC_TOK X86_FASTCALLCC_TOK
@@ -1174,6 +1174,7 @@ GVInternalLinkage
   | LINKONCE    { $$ = GlobalValue::LinkOnceLinkage; }
   | APPENDING   { $$ = GlobalValue::AppendingLinkage; }
   | DLLEXPORT   { $$ = GlobalValue::DLLExportLinkage; } 
+  | COMMON      { $$ = GlobalValue::CommonLinkage; }
   ;
 
 GVExternalLinkage