Index: include/llvm/ADT/Triple.h
===================================================================
--- include/llvm/ADT/Triple.h
+++ include/llvm/ADT/Triple.h
@@ -323,6 +323,11 @@
     return getOS() == Triple::Win32 || isOSCygMing();
   }
 
+  /// isOSWindows - Is this a "Windows" OS targeting a "MSVCRT.dll" environment.
+  bool isOSWindows() const {
+    return getOS() == Triple::Win32 || isOSCygMing();
+  }
+
   /// \brief Tests whether the OS is NaCl (Native Client)
   bool isOSNaCl() const {
     return getOS() == Triple::NaCl;