Patches to build EFI with Clang/LLVM. By Carl Norum.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124639 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/Triple.cpp b/lib/Support/Triple.cpp
index c9da964..eadfa56 100644
--- a/lib/Support/Triple.cpp
+++ b/lib/Support/Triple.cpp
@@ -122,6 +122,7 @@
   case GNU: return "gnu";
   case GNUEABI: return "gnueabi";
   case EABI: return "eabi";
+  case MachO: return "macho";
   }
 
   return "<invalid>";
@@ -350,6 +351,8 @@
     return GNUEABI;
   else if (EnvironmentName.startswith("gnu"))
     return GNU;
+  else if (EnvironmentName.startswith("macho"))
+    return MachO;
   else
     return UnknownEnvironment;
 }