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

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

Reviewers: rnk, asl, chandlerc

Reviewed By: chandlerc

CC: llvm-commits

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

llvm-svn: 188935

1 files changed, 5 insertions, 0 deletions

diff --git a/llvm/include/llvm/ADT/Triple.h b/llvm/include/llvm/ADT/Triple.h
index 8d968e8fa3a..4b53ad2f689 100644
--- a/llvm/include/llvm/ADT/Triple.h
+++ b/llvm/include/llvm/ADT/Triple.h
@@ -318,6 +318,11 @@ public:
     return getOS() == Triple::Cygwin || getOS() == Triple::MinGW32;
   }
 
+  /// \brief Is this a "Windows" OS targeting a "MSVCRT.dll" environment.
+  bool isOSMSVCRT() const {
+    return getOS() == Triple::Win32 || getOS() == Triple::MinGW32;
+  }
+
   /// isOSWindows - Is this a "Windows" OS.
   bool isOSWindows() const {
     return getOS() == Triple::Win32 || isOSCygMing();