Add support for the OpenCL vec_step operator, by generalising and
extending the existing support for sizeof and alignof.  Original
patch by Guy Benyei.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127475 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Serialization/ASTWriterStmt.cpp b/lib/Serialization/ASTWriterStmt.cpp
index a0ecf27..81942b6 100644
--- a/lib/Serialization/ASTWriterStmt.cpp
+++ b/lib/Serialization/ASTWriterStmt.cpp
@@ -68,7 +68,7 @@
     void VisitParenListExpr(ParenListExpr *E);
     void VisitUnaryOperator(UnaryOperator *E);
     void VisitOffsetOfExpr(OffsetOfExpr *E);
-    void VisitSizeOfAlignOfExpr(SizeOfAlignOfExpr *E);
+    void VisitUnaryExprOrTypeTraitExpr(UnaryExprOrTypeTraitExpr *E);
     void VisitArraySubscriptExpr(ArraySubscriptExpr *E);
     void VisitCallExpr(CallExpr *E);
     void VisitMemberExpr(MemberExpr *E);
@@ -504,9 +504,9 @@
   Code = serialization::EXPR_OFFSETOF;
 }
 
-void ASTStmtWriter::VisitSizeOfAlignOfExpr(SizeOfAlignOfExpr *E) {
+void ASTStmtWriter::VisitUnaryExprOrTypeTraitExpr(UnaryExprOrTypeTraitExpr *E) {
   VisitExpr(E);
-  Record.push_back(E->isSizeOf());
+  Record.push_back(E->getKind());
   if (E->isArgumentType())
     Writer.AddTypeSourceInfo(E->getArgumentTypeInfo(), Record);
   else {