Add support for generating block call expressions.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64346 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGExpr.cpp b/lib/CodeGen/CGExpr.cpp
index 4d6c3f1..7ef6fdf 100644
--- a/lib/CodeGen/CGExpr.cpp
+++ b/lib/CodeGen/CGExpr.cpp
@@ -968,7 +968,7 @@
           return EmitBuiltinExpr(builtinID, E);
 
   if (E->getCallee()->getType()->isBlockPointerType())
-    return EmitUnsupportedRValue(E, "block pointer reference");
+    return EmitBlockCallExpr(E);
 
   llvm::Value *Callee = EmitScalarExpr(E->getCallee());
   return EmitCallExpr(Callee, E->getCallee()->getType(),