[PATCH] ADT/Triple: Helper to determine if we are targeting the Windows CRT

[David Majnemer]

Hi rnk, asl, chandlerc,

This support will be utilized in things like clang to help check printf
format specifiers that are only valid when using the VSCRT.

http://llvm-reviews.chandlerc.com/D1455

Files:
  include/llvm/ADT/Triple.h

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;
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