Add 32 bit subregs

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75923 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/SystemZ/SystemZISelLowering.cpp b/lib/Target/SystemZ/SystemZISelLowering.cpp
index e22df99..f2467af 100644
--- a/lib/Target/SystemZ/SystemZISelLowering.cpp
+++ b/lib/Target/SystemZ/SystemZISelLowering.cpp
@@ -46,7 +46,7 @@
 
   // Provide all sorts of operation actions
 
-  setStackPointerRegisterToSaveRestore(SystemZ::R15);
+  setStackPointerRegisterToSaveRestore(SystemZ::R15D);
   setSchedulingPreference(SchedulingForLatency);
 
   setOperationAction(ISD::RET,              MVT::Other, Custom);