Add add reg-reg and reg-imm patterns

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75913 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/SystemZ/02-RetAdd.ll b/test/CodeGen/SystemZ/02-RetAdd.ll
new file mode 100644
index 0000000..ae33e0c
--- /dev/null
+++ b/test/CodeGen/SystemZ/02-RetAdd.ll
@@ -0,0 +1,6 @@
+; RUN: llvm-as < %s | llc
+define i64 @foo(i64 %a, i64 %b) {
+entry:
+    %c = add i64 %a, %b
+    ret i64 %c
+}
\ No newline at end of file