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/CodeGenFunction.h b/lib/CodeGen/CodeGenFunction.h
index 39f1c1d..f6196fe 100644
--- a/lib/CodeGen/CodeGenFunction.h
+++ b/lib/CodeGen/CodeGenFunction.h
@@ -611,6 +611,8 @@
 
   RValue EmitBuiltinExpr(unsigned BuiltinID, const CallExpr *E);
 
+  RValue EmitBlockCallExpr(const CallExpr *E);
+  
   /// EmitTargetBuiltinExpr - Emit the given builtin call. Returns 0 if the call
   /// is unhandled by the current target.
   llvm::Value *EmitTargetBuiltinExpr(unsigned BuiltinID, const CallExpr *E);