Making a couple of tests a bit more flexible wrt thunk mangling. Fixes checkin for r317047.

llvm-svn: 317053
diff --git a/clang/test/CodeGenCXX/tmp-md-nodes2.cpp b/clang/test/CodeGenCXX/tmp-md-nodes2.cpp
index 00827f5..e50220c 100644
--- a/clang/test/CodeGenCXX/tmp-md-nodes2.cpp
+++ b/clang/test/CodeGenCXX/tmp-md-nodes2.cpp
@@ -30,4 +30,4 @@
   return true;
 }
 
-// CHECK: define {{.*}} @_ZThn8_N10CBdVfsImpl12ReqCacheHintEP9CMsgAgentN3CFs10CACHE_HINTEz(
+// CHECK: define {{.*}} @_ZThn{{[48]}}_N10CBdVfsImpl12ReqCacheHintEP9CMsgAgentN3CFs10CACHE_HINTEz(