Give users a grace period on the implementation keyword. This *will* get

removed in a few days.

llvm-svn: 35472

llvm/lib/AsmParser/Lexer.l

@@ -208,7 +208,7 @@ dllexport       { return DLLEXPORT; }
 hidden          { return HIDDEN; }
 extern_weak     { return EXTERN_WEAK; }
 external        { return EXTERNAL; }
-checkpoint      { return CHECKPOINT; }
+implementation  { return IMPLEMENTATION; }
 zeroinitializer { return ZEROINITIALIZER; }
 \.\.\.          { return DOTDOTDOT; }
 undef           { return UNDEF; }

llvm/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 CHECKPOINT ZEROINITIALIZER TRUETOK FALSETOK BEGINTOK ENDTOK
+%token IMPLEMENTATION 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
@@ -1942,7 +1942,7 @@ Definition
   | MODULE ASM_TOK AsmBlock {
     CHECK_FOR_ERROR
   }  
-  | CHECKPOINT {
+  | IMPLEMENTATION {
     // Emit an error if there are any unresolved types left.
     if (!CurModule.LateResolveTypes.empty()) {
       const ValID &DID = CurModule.LateResolveTypes.begin()->first;