[NFC] Add const qualifier for parameters of functions in Instructions.h

This is to extract the NFC change in llvm#96878 into a separate PR.

llvm/include/llvm/IR/Instructions.h

@@ -4897,7 +4897,7 @@ inline Value *getPointerOperand(Value *V) {
 }
 
 /// A helper function that returns the alignment of load or store instruction.
-inline Align getLoadStoreAlignment(Value *I) {
+inline Align getLoadStoreAlignment(const Value *I) {
   assert((isa<LoadInst>(I) || isa<StoreInst>(I)) &&
          "Expected Load or Store instruction");
   if (auto *LI = dyn_cast<LoadInst>(I))
@@ -4907,7 +4907,7 @@ inline Align getLoadStoreAlignment(Value *I) {
 
 /// A helper function that returns the address space of the pointer operand of
 /// load or store instruction.
-inline unsigned getLoadStoreAddressSpace(Value *I) {
+inline unsigned getLoadStoreAddressSpace(const Value *I) {
   assert((isa<LoadInst>(I) || isa<StoreInst>(I)) &&
          "Expected Load or Store instruction");
   if (auto *LI = dyn_cast<LoadInst>(I))
@@ -4916,7 +4916,7 @@ inline unsigned getLoadStoreAddressSpace(Value *I) {
 }
 
 /// A helper function that returns the type of a load or store instruction.
-inline Type *getLoadStoreType(Value *I) {
+inline Type *getLoadStoreType(const Value *I) {
   assert((isa<LoadInst>(I) || isa<StoreInst>(I)) &&
          "Expected Load or Store instruction");
   if (auto *LI = dyn_cast<LoadInst>(I))