Revert 84315 for now. Re-thinking the patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84321 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/TargetInstrInfoImpl.cpp b/lib/CodeGen/TargetInstrInfoImpl.cpp
index b610777..c646869 100644
--- a/lib/CodeGen/TargetInstrInfoImpl.cpp
+++ b/lib/CodeGen/TargetInstrInfoImpl.cpp
@@ -187,7 +187,7 @@
   const MachineFrameInfo &MFI = *MF.getFrameInfo();
   assert(MFI.getObjectOffset(FrameIndex) != -1);
   MachineMemOperand *MMO =
-    MF.getMachineMemOperand(PseudoSourceValue::getStackObject(FrameIndex),
+    MF.getMachineMemOperand(PseudoSourceValue::getFixedStack(FrameIndex),
                             Flags, /*Offset=*/0,
                             MFI.getObjectSize(FrameIndex),
                             MFI.getObjectAlignment(FrameIndex));