Assorted work leading towards the elimination of CK_Unknown.

llvm-svn: 119138
diff --git a/clang/lib/Checker/GRExprEngine.cpp b/clang/lib/Checker/GRExprEngine.cpp
index d57bbc2..ecf2103 100644
--- a/clang/lib/Checker/GRExprEngine.cpp
+++ b/clang/lib/Checker/GRExprEngine.cpp
@@ -2541,6 +2541,7 @@
     return;
 
   case CK_Unknown:
+  case CK_Dependent:
   case CK_ArrayToPointerDecay:
   case CK_BitCast:
   case CK_LValueBitCast:
@@ -2548,8 +2549,11 @@
   case CK_NullToPointer:
   case CK_IntegralToPointer:
   case CK_PointerToIntegral:
+  case CK_PointerToBoolean:
+  case CK_IntegralToBoolean:
   case CK_IntegralToFloating:
   case CK_FloatingToIntegral:
+  case CK_FloatingToBoolean:
   case CK_FloatingCast:
   case CK_FloatingRealToComplex:
   case CK_FloatingComplexToReal: