Add support for the OpenBSD for Bitrig.

Patch by David Hill.

llvm-svn: 161344

llvm/lib/Support/Triple.cpp

@@ -124,6 +124,7 @@ const char *Triple::getOSTypeName(OSType Kind) {
   case RTEMS: return "rtems";
   case NativeClient: return "nacl";
   case CNK: return "cnk";
+  case Bitrig: return "bitrig";
   }
 
   llvm_unreachable("Invalid OSType");
@@ -293,6 +294,7 @@ static Triple::OSType parseOS(StringRef OSName) {
     .StartsWith("rtems", Triple::RTEMS)
     .StartsWith("nacl", Triple::NativeClient)
     .StartsWith("cnk", Triple::CNK)
+    .StartsWith("bitrig", Triple::Bitrig)
     .Default(Triple::UnknownOS);
 }