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/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp
index c08fdd8..fb7793f 100644
--- a/lib/Target/X86/X86InstrInfo.cpp
+++ b/lib/Target/X86/X86InstrInfo.cpp
@@ -688,7 +688,7 @@
   }
 }
 
-unsigned X86InstrInfo::isLoadFromStackSlot(MachineInstr *MI, 
+unsigned X86InstrInfo::isLoadFromStackSlot(const MachineInstr *MI, 
                                            int &FrameIndex) const {
   switch (MI->getOpcode()) {
   default: break;
@@ -718,7 +718,7 @@
   return 0;
 }
 
-unsigned X86InstrInfo::isStoreToStackSlot(MachineInstr *MI,
+unsigned X86InstrInfo::isStoreToStackSlot(const MachineInstr *MI,
                                           int &FrameIndex) const {
   switch (MI->getOpcode()) {
   default: break;
@@ -936,7 +936,7 @@
 /// from the argument area of a function if it does not change.  This should
 /// only return true of *all* loads the instruction does are invariant (if it
 /// does multiple loads).
-bool X86InstrInfo::isInvariantLoad(MachineInstr *MI) const {
+bool X86InstrInfo::isInvariantLoad(const MachineInstr *MI) const {
   // This code cares about loads from three cases: constant pool entries,
   // invariant argument slots, and global stubs.  In order to handle these cases
   // for all of the myriad of X86 instructions, we just scan for a CP/FI/GV