[x86] Support i386-*-*-code16 triple for emitting 16-bit code

llvm-svn: 199648
diff --git a/llvm/lib/Support/Triple.cpp b/llvm/lib/Support/Triple.cpp
index 273316a..1947f43 100644
--- a/llvm/lib/Support/Triple.cpp
+++ b/llvm/lib/Support/Triple.cpp
@@ -149,6 +149,7 @@
   case GNUEABIHF: return "gnueabihf";
   case GNUEABI: return "gnueabi";
   case GNUX32: return "gnux32";
+  case CODE16: return "code16";
   case EABI: return "eabi";
   case EABIHF: return "eabihf";
   case MachO: return "macho";
@@ -303,6 +304,7 @@
     .StartsWith("gnueabihf", Triple::GNUEABIHF)
     .StartsWith("gnueabi", Triple::GNUEABI)
     .StartsWith("gnux32", Triple::GNUX32)
+    .StartsWith("code16", Triple::CODE16)
     .StartsWith("gnu", Triple::GNU)
     .StartsWith("macho", Triple::MachO)
     .StartsWith("android", Triple::Android)