Index: clang/lib/Interpreter/IncrementalParser.cpp
===================================================================
--- clang/lib/Interpreter/IncrementalParser.cpp
+++ clang/lib/Interpreter/IncrementalParser.cpp
@@ -69,8 +69,12 @@
             LLVM_FALLTHROUGH;
           case frontend::EmitAssembly:
             LLVM_FALLTHROUGH;
+          case frontend::EmitBC:
+            LLVM_FALLTHROUGH;
           case frontend::EmitObj:
             LLVM_FALLTHROUGH;
+          case frontend::PrintPreprocessedInput:
+            LLVM_FALLTHROUGH;
           case frontend::EmitLLVMOnly:
             Act.reset(new EmitLLVMOnlyAction(&LLVMCtx));
             break;
Index: clang/test/Interpreter/incremental-mode.cpp
===================================================================
--- /dev/null
+++ clang/test/Interpreter/incremental-mode.cpp
@@ -0,0 +1,3 @@
+// RUN: clang-repl -Xcc -E
+// RUN: clang-repl -Xcc -emit-llvm 
+// expected-no-diagnostics