Implemented serialization of IfStmt.

Fixed declarations of several "directEmit" methods of classes that subclass
Stmt that were missing a "virtual" keyword.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@43814 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/AST/StmtSerialization.cpp b/AST/StmtSerialization.cpp
index 7d82d05..c6af9a5 100644
--- a/AST/StmtSerialization.cpp
+++ b/AST/StmtSerialization.cpp
@@ -52,6 +52,9 @@
     case DefaultStmtClass:
       return DefaultStmt::directMaterialize(D);
       
+    case IfStmtClass:
+      return IfStmt::directMaterialize(D);
+      
     case IntegerLiteralClass:
       return IntegerLiteral::directMaterialize(D);
       
@@ -182,6 +185,21 @@
   return stmt;
 }
 
+void IfStmt::directEmit(llvm::Serializer& S) const {
+  S.Emit(IfLoc);
+  S.EmitOwnedPtr(getCond());
+  S.EmitOwnedPtr(getThen());
+  S.EmitOwnedPtr(getElse());
+}
+
+IfStmt* IfStmt::directMaterialize(llvm::Deserializer& D) {
+  SourceLocation L = SourceLocation::ReadVal(D);
+  Expr* Cond = D.ReadOwnedPtr<Expr>();
+  Stmt* Then = D.ReadOwnedPtr<Stmt>();
+  Stmt* Else = D.ReadOwnedPtr<Stmt>();
+  return new IfStmt(L,Cond,Then,Else);
+}
+
 void IntegerLiteral::directEmit(llvm::Serializer& S) const {
   S.Emit(Loc);
   S.Emit(getType());