diff --git a/lib/AsmParser/Lexer.l b/lib/AsmParser/Lexer.l
index 7c524a2ba5e..02566eb6da8 100644
--- a/lib/AsmParser/Lexer.l
+++ b/lib/AsmParser/Lexer.l
@@ -208,7 +208,6 @@ dllexport       { return DLLEXPORT; }
 hidden          { return HIDDEN; }
 extern_weak     { return EXTERN_WEAK; }
 external        { return EXTERNAL; }
-implementation  { return IMPLEMENTATION; }
 zeroinitializer { return ZEROINITIALIZER; }
 \.\.\.          { return DOTDOTDOT; }
 undef           { return UNDEF; }
diff --git a/lib/AsmParser/llvmAsmParser.y b/lib/AsmParser/llvmAsmParser.y
index 308319639ec..030e057b712 100644
--- a/lib/AsmParser/llvmAsmParser.y
+++ b/lib/AsmParser/llvmAsmParser.y
@@ -1039,7 +1039,7 @@ Module *llvm::RunVMAsmParser(const char * AsmString, Module * M) {
 %type <UIntVal> OptAlign OptCAlign
 %type <StrVal> OptSection SectionString
 
-%token IMPLEMENTATION ZEROINITIALIZER TRUETOK FALSETOK BEGINTOK ENDTOK
+%token ZEROINITIALIZER TRUETOK FALSETOK BEGINTOK ENDTOK
 %token DECLARE DEFINE GLOBAL CONSTANT SECTION VOLATILE
 %token TO DOTDOTDOT NULL_TOK UNDEF INTERNAL LINKONCE WEAK APPENDING
 %token DLLIMPORT DLLEXPORT EXTERN_WEAK
@@ -1942,18 +1942,6 @@ Definition
   | MODULE ASM_TOK AsmBlock {
     CHECK_FOR_ERROR
   }  
-  | IMPLEMENTATION {
-    // Emit an error if there are any unresolved types left.
-    if (!CurModule.LateResolveTypes.empty()) {
-      const ValID &DID = CurModule.LateResolveTypes.begin()->first;
-      if (DID.Type == ValID::LocalName) {
-        GEN_ERROR("Reference to an undefined type: '"+DID.getName() + "'");
-      } else {
-        GEN_ERROR("Reference to an undefined type: #" + itostr(DID.Num));
-      }
-    }
-    CHECK_FOR_ERROR
-  }
   | OptLocalAssign TYPE Types {
     if (!UpRefs.empty())
       GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());