Make this darwin only for now while investigating to clear up x86_64

Release+Asserts linux tests.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@136223 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGen/2003-10-29-AsmRename.c

@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -emit-llvm %s  -o /dev/null
+// RUN: %clang_cc1 -emit-llvm %s -triple x86_64-apple-darwin -o /dev/null
 
 
 struct foo { int X; };