Add simple frame index elimination

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75939 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/SystemZ/SystemZTargetMachine.cpp b/lib/Target/SystemZ/SystemZTargetMachine.cpp
index a8b2b76..8160953 100644
--- a/lib/Target/SystemZ/SystemZTargetMachine.cpp
+++ b/lib/Target/SystemZ/SystemZTargetMachine.cpp
@@ -41,7 +41,7 @@
   : Subtarget(*this, M, FS),
     DataLayout("E-p:64:64:64-i1:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128"),
     InstrInfo(*this), TLInfo(*this),
-    FrameInfo(TargetFrameInfo::StackGrowsDown, 8, 0) {
+    FrameInfo(TargetFrameInfo::StackGrowsDown, 8, -160) {
 }
 
 bool SystemZTargetMachine::addInstSelector(PassManagerBase &PM,