Introduce five new cast kinds for various conversions into and
between complex types.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@118994 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/ExprConstant.cpp b/lib/AST/ExprConstant.cpp
index dfeb32d..172a811 100644
--- a/lib/AST/ExprConstant.cpp
+++ b/lib/AST/ExprConstant.cpp
@@ -2165,6 +2165,8 @@
   QualType EltType = E->getType()->getAs<ComplexType>()->getElementType();
   QualType SubType = SubExpr->getType();
 
+  // TODO: just trust CastKind
+
   if (SubType->isRealFloatingType()) {
     APFloat &Real = Result.FloatReal;
     if (!EvaluateFloat(SubExpr, Real, Info))