Added a thumb vararg test.

llvm-svn: 33740
diff --git a/llvm/test/CodeGen/ARM/vargs2.ll b/llvm/test/CodeGen/ARM/vargs2.ll
index bc82159..d41f0c8 100644
--- a/llvm/test/CodeGen/ARM/vargs2.ll
+++ b/llvm/test/CodeGen/ARM/vargs2.ll
@@ -1,4 +1,7 @@
-; RUN: llvm-upgrade < %s | llvm-as | llc -march=arm
+; RUN: llvm-upgrade < %s | llvm-as | llc -march=arm %%
+; RUN: llvm-upgrade < %s | llvm-as | llc -march=arm -enable-thumb &&
+; RUN: llvm-upgrade < %s | llvm-as | llc -march=arm -enable-thumb | grep pop | wc -l | grep 2
+
 %str = internal constant [4 x sbyte] c"%d\0A\00"		; <[4 x sbyte]*> [#uses=1]
 
 implementation   ; Functions: