diff --git a/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp b/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp
--- a/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp
+++ b/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp
@@ -472,6 +472,7 @@
     switch (IK.getLanguage()) {
     case clang::Language::Unknown:
     case clang::Language::LLVM_IR:
+    case clang::Language::HLSL:
     case clang::Language::RenderScript:
       llvm_unreachable("Invalid input kind!");
     case clang::Language::OpenCL: