[SystemZ] Add ARK, AGRK, SRK and SGRK

The testsuite changes follow the same lines as for r186683.

llvm-svn: 186686
diff --git a/llvm/test/CodeGen/SystemZ/int-add-02.ll b/llvm/test/CodeGen/SystemZ/int-add-02.ll
index 0d4c8ce..4386b5a 100644
--- a/llvm/test/CodeGen/SystemZ/int-add-02.ll
+++ b/llvm/test/CodeGen/SystemZ/int-add-02.ll
@@ -1,6 +1,7 @@
 ; Test 32-bit addition in which the second operand is variable.
 ;
-; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s
+; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
 
 declare i32 @foo()