Add more const qualifiers. This fixes build breakage from r59540.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59542 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PIC16/PIC16InstrInfo.cpp b/lib/Target/PIC16/PIC16InstrInfo.cpp
index 96858e3..7cb2379 100644
--- a/lib/Target/PIC16/PIC16InstrInfo.cpp
+++ b/lib/Target/PIC16/PIC16InstrInfo.cpp
@@ -38,7 +38,7 @@
 /// not, return 0.  This predicate must return 0 if the instruction has
 /// any side effects other than loading from the stack slot.
 unsigned PIC16InstrInfo::
-isLoadFromStackSlot(MachineInstr *MI, int &FrameIndex) const 
+isLoadFromStackSlot(const MachineInstr *MI, int &FrameIndex) const 
 {
   if (MI->getOpcode() == PIC16::MOVF) {
     if ((MI->getOperand(2).isFI()) && // is a stack slot
@@ -58,7 +58,7 @@
 /// not, return 0.  This predicate must return 0 if the instruction has
 /// any side effects other than storing to the stack slot.
 unsigned PIC16InstrInfo::
-isStoreToStackSlot(MachineInstr *MI, int &FrameIndex) const 
+isStoreToStackSlot(const MachineInstr *MI, int &FrameIndex) const 
 {
   if (MI->getOpcode() == PIC16::MOVWF) {
     if ((MI->getOperand(0).isFI()) && // is a stack slot
diff --git a/lib/Target/PIC16/PIC16InstrInfo.h b/lib/Target/PIC16/PIC16InstrInfo.h
index 1e33b0a..250142d 100644
--- a/lib/Target/PIC16/PIC16InstrInfo.h
+++ b/lib/Target/PIC16/PIC16InstrInfo.h
@@ -40,14 +40,16 @@
   /// the destination along with the FrameIndex of the loaded stack slot.  If
   /// not, return 0.  This predicate must return 0 if the instruction has
   /// any side effects other than loading from the stack slot.
-  virtual unsigned isLoadFromStackSlot(MachineInstr *MI, int &FrameIndex) const;
+  virtual unsigned isLoadFromStackSlot(const MachineInstr *MI,
+                                       int &FrameIndex) const;
   
   /// isStoreToStackSlot - If the specified machine instruction is a direct
   /// store to a stack slot, return the virtual or physical register number of
   /// the source reg along with the FrameIndex of the loaded stack slot.  If
   /// not, return 0.  This predicate must return 0 if the instruction has
   /// any side effects other than storing to the stack slot.
-  virtual unsigned isStoreToStackSlot(MachineInstr *MI, int &FrameIndex) const;
+  virtual unsigned isStoreToStackSlot(const MachineInstr *MI,
+                                      int &FrameIndex) const;
  
   /// Used for spilling a register
   void storeRegToStackSlot(MachineBasicBlock &MBB,