Autodetect bulldozers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145607 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Support/Host.cpp

@@ -298,6 +298,8 @@ std::string sys::getHostCPUName() {
         }
       case 16:
         return "amdfam10";
+      case 21:
+        return "bdver1";
     default:
       return "generic";
     }