Const-ify several TargetInstrInfo methods.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57622 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCInstrInfo.h b/lib/Target/PowerPC/PPCInstrInfo.h
index cb5a0e6..2e950a3 100644
--- a/lib/Target/PowerPC/PPCInstrInfo.h
+++ b/lib/Target/PowerPC/PPCInstrInfo.h
@@ -142,20 +142,20 @@
   /// copy instructions, turning them into load/store instructions.
   virtual MachineInstr* foldMemoryOperand(MachineFunction &MF,
                                           MachineInstr* MI,
-                                          SmallVectorImpl<unsigned> &Ops,
+                                          const SmallVectorImpl<unsigned> &Ops,
                                           int FrameIndex) const;
 
   virtual MachineInstr* foldMemoryOperand(MachineFunction &MF,
                                           MachineInstr* MI,
-                                          SmallVectorImpl<unsigned> &Ops,
+                                          const SmallVectorImpl<unsigned> &Ops,
                                           MachineInstr* LoadMI) const {
     return 0;
   }
 
-  virtual bool canFoldMemoryOperand(MachineInstr *MI,
-                                    SmallVectorImpl<unsigned> &Ops) const;
+  virtual bool canFoldMemoryOperand(const MachineInstr *MI,
+                                    const SmallVectorImpl<unsigned> &Ops) const;
   
-  virtual bool BlockHasNoFallThrough(MachineBasicBlock &MBB) const;
+  virtual bool BlockHasNoFallThrough(const MachineBasicBlock &MBB) const;
   virtual
   bool ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const;