PCH support for blocks

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69373 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/PCHWriter.cpp b/lib/Frontend/PCHWriter.cpp
index 14e979f..e71a600 100644
--- a/lib/Frontend/PCHWriter.cpp
+++ b/lib/Frontend/PCHWriter.cpp
@@ -403,7 +403,7 @@
 
 void PCHDeclWriter::VisitBlockDecl(BlockDecl *D) {
   VisitDecl(D);
-  // FIXME: emit block body
+  Writer.AddStmt(D->getBody());
   Record.push_back(D->param_size());
   for (FunctionDecl::param_iterator P = D->param_begin(), PEnd = D->param_end();
        P != PEnd; ++P)
@@ -496,6 +496,7 @@
     void VisitChooseExpr(ChooseExpr *E);
     void VisitGNUNullExpr(GNUNullExpr *E);
     void VisitShuffleVectorExpr(ShuffleVectorExpr *E);
+    void VisitBlockExpr(BlockExpr *E);
     void VisitBlockDeclRefExpr(BlockDeclRefExpr *E);
   };
 }
@@ -940,6 +941,13 @@
   Code = pch::EXPR_SHUFFLE_VECTOR;
 }
 
+void PCHStmtWriter::VisitBlockExpr(BlockExpr *E) {
+  VisitExpr(E);
+  Writer.AddDeclRef(E->getBlockDecl(), Record);
+  Record.push_back(E->hasBlockDeclRefExprs());
+  Code = pch::EXPR_BLOCK;
+}
+
 void PCHStmtWriter::VisitBlockDeclRefExpr(BlockDeclRefExpr *E) {
   VisitExpr(E);
   Writer.AddDeclRef(E->getDecl(), Record);