commit 23cba801e11b03929c44f8cf54578305963a3476
author John McCall <rjmccall@apple.com> Tue Mar 30 23:58:03 2010 +0000
committer John McCall <rjmccall@apple.com> Tue Mar 30 23:58:03 2010 +0000
tree 7a1edfa728d0b5e9f0a9732d0faaec43ad2aa242
parent 658f679b63cf92204d707c5dfc1251ae8f3c0762

Introduce a new kind of derived-to-base cast which bypasses the need for
null checks, and make sure we elide null checks when accessing base class
members.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99963 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/CGExpr.cpp

diff --git a/lib/CodeGen/CGExpr.cpp b/lib/CodeGen/CGExpr.cpp
index 2ddc08a..027264f 100644
--- a/lib/CodeGen/CGExpr.cpp
+++ b/lib/CodeGen/CGExpr.cpp
@@ -1637,6 +1637,7 @@
   case CastExpr::CK_AnyPointerToObjCPointerCast:
     return EmitLValue(E->getSubExpr());
   
+  case CastExpr::CK_UncheckedDerivedToBase:
   case CastExpr::CK_DerivedToBase: {
     const RecordType *DerivedClassTy = 
       E->getSubExpr()->getType()->getAs<RecordType>();