Split foldMemoryOperand into public non-virtual and protected virtual
parts, and add target-independent code to add/preserve
MachineMemOperands.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60488 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Alpha/AlphaInstrInfo.cpp b/lib/Target/Alpha/AlphaInstrInfo.cpp
index 7b3053e..bd6f2cf 100644
--- a/lib/Target/Alpha/AlphaInstrInfo.cpp
+++ b/lib/Target/Alpha/AlphaInstrInfo.cpp
@@ -255,10 +255,10 @@
   NewMIs.push_back(MIB);
 }
 
-MachineInstr *AlphaInstrInfo::foldMemoryOperand(MachineFunction &MF,
-                                                MachineInstr *MI,
+MachineInstr *AlphaInstrInfo::foldMemoryOperandImpl(MachineFunction &MF,
+                                                    MachineInstr *MI,
                                           const SmallVectorImpl<unsigned> &Ops,
-                                                int FrameIndex) const {
+                                                    int FrameIndex) const {
    if (Ops.size() != 1) return NULL;
 
    // Make sure this is a reg-reg copy.