Revert "Revert "[IR] Remove deprecated PointerType methods that always return true (#74521)""

This reverts commit b9e6132.

Author: jsji

llvm/include/llvm/IR/DerivedTypes.h

@@ -669,9 +669,6 @@ class PointerType : public Type {
     return PointerType::get(C, 0);
   }
 
-  [[deprecated("Always returns true")]]
-  bool isOpaque() const { return true; }
-
   /// Return true if the specified type is valid as a element type.
   static bool isValidElementType(Type *ElemTy);
 
@@ -681,24 +678,6 @@ class PointerType : public Type {
   /// Return the address space of the Pointer type.
   inline unsigned getAddressSpace() const { return getSubclassData(); }
 
-  /// Return true if either this is an opaque pointer type or if this pointee
-  /// type matches Ty. Primarily used for checking if an instruction's pointer
-  /// operands are valid types. Will be useless after non-opaque pointers are
-  /// removed.
-  [[deprecated("Always returns true")]]
-  bool isOpaqueOrPointeeTypeMatches(Type *) {
-    return true;
-  }
-
-  /// Return true if both pointer types have the same element type. Two opaque
-  /// pointers are considered to have the same element type, while an opaque
-  /// and a non-opaque pointer have different element types.
-  /// TODO: Remove after opaque pointer transition is complete.
-  [[deprecated("Always returns true")]]
-  bool hasSameElementTypeAs(PointerType *Other) {
-    return true;
-  }
-
   /// Implement support type inquiry through isa, cast, and dyn_cast.
   static bool classof(const Type *T) {
     return T->getTypeID() == PointerTyID;

llvm/lib/Target/SPIRV/SPIRVEmitIntrinsics.cpp

@@ -506,8 +506,7 @@ bool SPIRVEmitIntrinsics::runOnFunction(Function &Func) {
       continue;
     Type *ElTy = SI->getValueOperand()->getType();
     PointerType *PTy = cast<PointerType>(SI->getOperand(1)->getType());
-    if (ElTy->isAggregateType() || ElTy->isVectorTy() ||
-        !PTy->isOpaqueOrPointeeTypeMatches(ElTy))
+    if (ElTy->isAggregateType() || ElTy->isVectorTy())
       AggrStores.insert(&I);
   }