diff --git a/lib/Target/PowerPC/PPCSubtarget.cpp b/lib/Target/PowerPC/PPCSubtarget.cpp
index 2fd62a6..5f3aa23 100644
--- a/lib/Target/PowerPC/PPCSubtarget.cpp
+++ b/lib/Target/PowerPC/PPCSubtarget.cpp
@@ -70,7 +70,6 @@
   , HasSTFIWX(false)
   , HasLazyResolverStubs(false)
   , IsJITCodeModel(false)
-  , DarwinVers(0)
   , TargetTriple(TT) {
 
   // Determine default and user specified characteristics
@@ -93,19 +92,6 @@
   // support it, ignore.
   if (use64BitRegs() && !has64BitSupport())
     Use64BitRegs = false;
-  
-  // Set the boolean corresponding to the current target triple, or the default
-  // if one cannot be determined, to true.
-  if (TT.length() > 7) {
-    // Determine which version of darwin this is.
-    size_t DarwinPos = TT.find("-darwin");
-    if (DarwinPos != std::string::npos) {
-      if (isdigit(TT[DarwinPos+7]))
-        DarwinVers = atoi(&TT[DarwinPos+7]);
-      else
-        DarwinVers = 8;  // Minimum supported darwin is Tiger.
-    }
-  }
 
   // Set up darwin-specific properties.
   if (isDarwin())
diff --git a/lib/Target/PowerPC/PPCSubtarget.h b/lib/Target/PowerPC/PPCSubtarget.h
index 8502bf4..d1fac98 100644
--- a/lib/Target/PowerPC/PPCSubtarget.h
+++ b/lib/Target/PowerPC/PPCSubtarget.h
@@ -66,10 +66,6 @@
   bool HasLazyResolverStubs;
   bool IsJITCodeModel;
   
-  /// DarwinVers - Nonzero if this is a darwin platform.  Otherwise, the numeric
-  /// version of the platform, e.g. 8 = 10.4 (Tiger), 9 = 10.5 (Leopard), etc.
-  unsigned char DarwinVers; // Is any darwin-ppc platform.
-
   /// TargetTriple - What processor and OS we're targeting.
   Triple TargetTriple;
 
@@ -142,12 +138,7 @@
   const Triple &getTargetTriple() const { return TargetTriple; }
 
   /// isDarwin - True if this is any darwin platform.
-  bool isDarwin() const { return DarwinVers != 0; }
-  /// isDarwin - True if this is darwin9 (leopard, 10.5) or above.
-  bool isDarwin9() const { return DarwinVers >= 9; }
-
-  /// getDarwinVers - Return the darwin version number, 8 = tiger, 9 = leopard.
-  unsigned getDarwinVers() const { return DarwinVers; }
+  bool isDarwin() const { return TargetTriple.isOSX(); }
 
   bool isDarwinABI() const { return isDarwin(); }
   bool isSVR4ABI() const { return !isDarwin(); }