Subzero: Update for LLVM 3.9 (trunk).

src/IceClFlags.h

Index: src/IceClFlags.h
diff --git a/src/IceClFlags.h b/src/IceClFlags.h
index 19785bf562515c9e8e91fe7a04a8cccfb5bc5e10..8c43471b9096e4cf029223ed34d7f691ccba9cc6 100644
--- a/src/IceClFlags.h
+++ b/src/IceClFlags.h
@@ -36,6 +36,20 @@
 #include <utility>
 #include <vector>
 
+#ifndef PNACL_LLVM
+namespace llvm {
+// \brief Define the expected format of the file.
+enum NaClFileFormat {
+  // LLVM IR source or bitcode file (as appropriate).
+  LLVMFormat,
+  // PNaCl bitcode file.
+  PNaClFormat,
+  // Autodetect if PNaCl or LLVM format.
+  AutodetectFileFormat
+};
+} // end of namespace llvm
+#endif // !PNACL_LLVM
+
 namespace Ice {
 // detail defines the type cl_type_traits, which is used to define the
 // getters/setters for the ClFlags class. It converts the cl_detail::*_flag