1 files changed, 9 insertions, 0 deletions
diff --git a/test/CodeGen/Thumb2/thumb2-rsb.ll b/test/CodeGen/Thumb2/thumb2-rsb.ll
new file mode 100644
index 0000000..934e377
--- /dev/null
+++ b/test/CodeGen/Thumb2/thumb2-rsb.ll
@@ -0,0 +1,9 @@
+; XFAIL: *
+; this will match as "sub" until we get register shifting
+
+; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | grep {rsb\\W*r\[0-9\],\\W*r\[0-9\],\\W*r\[0-9\]*} | count 1
+
+define i32 @f1(i32 %a, i32 %b) {
+    %tmp = sub i32 %b, %a
+    ret i32 %tmp
+}