[clang][Interp][NFC] Make classes final that can be final

clang/lib/AST/Interp/Boolean.h

@@ -22,7 +22,7 @@ namespace clang {
 namespace interp {
 
 /// Wrapper around boolean types.
-class Boolean {
+class Boolean final {
  private:
   /// Underlying boolean.
   bool V;

clang/lib/AST/Interp/ByteCodeStmtGen.h

@@ -33,7 +33,7 @@ template <class Emitter> class LabelScope;
 
 /// Compilation context for statements.
 template <class Emitter>
-class ByteCodeStmtGen : public ByteCodeExprGen<Emitter> {
+class ByteCodeStmtGen final : public ByteCodeExprGen<Emitter> {
   using LabelTy = typename Emitter::LabelTy;
   using AddrTy = typename Emitter::AddrTy;
   using OptLabelTy = llvm::Optional<LabelTy>;

clang/lib/AST/Interp/Context.h

@@ -33,7 +33,7 @@ class State;
 enum PrimType : unsigned;
 
 /// Holds all information required to evaluate constexpr code in a module.
-class Context {
+class Context final {
 public:
   /// Initialises the constexpr VM.
   Context(ASTContext &Ctx);

clang/lib/AST/Interp/Descriptor.h

@@ -48,7 +48,7 @@ using BlockMoveFn = void (*)(Block *Storage, char *SrcFieldPtr,
 using InterpSize = unsigned;
 
 /// Describes a memory block created by an allocation site.
-struct Descriptor {
+struct Descriptor final {
 private:
   /// Original declaration, used to emit the error message.
   const DeclTy Source;

clang/lib/AST/Interp/Function.h

@@ -29,7 +29,7 @@ enum PrimType : uint32_t;
 /// Describes a scope block.
 ///
 /// The block gathers all the descriptors of the locals defined in this block.
-class Scope {
+class Scope final {
 public:
   /// Information about a local's storage.
   struct Local {
@@ -56,7 +56,7 @@ private:
 ///
 /// Contains links to the bytecode of the function, as well as metadata
 /// describing all arguments and stack-local variables.
-class Function {
+class Function final {
 public:
   using ParamDescriptor = std::pair<PrimType, Descriptor *>;
 

clang/lib/AST/Interp/Integral.h

@@ -53,7 +53,7 @@ template <> struct Repr<64, true> { using Type = int64_t; };
 /// These wrappers are required to shared an interface between APSint and
 /// builtin primitive numeral types, while optimising for storage and
 /// allowing methods operating on primitive type to compile to fast code.
-template <unsigned Bits, bool Signed> class Integral {
+template <unsigned Bits, bool Signed> class Integral final {
 private:
   template <unsigned OtherBits, bool OtherSigned> friend class Integral;
 

clang/lib/AST/Interp/InterpBlock.h

@@ -32,7 +32,7 @@ enum PrimType : unsigned;
 /// A memory block, either on the stack or in the heap.
 ///
 /// The storage described by the block immediately follows it in memory.
-class Block {
+class Block final {
 public:
   // Creates a new block.
   Block(const llvm::Optional<unsigned> &DeclID, Descriptor *Desc,
@@ -107,7 +107,7 @@ protected:
 ///
 /// Dead blocks are chained in a double-linked list to deallocate them
 /// whenever pointers become dead.
-class DeadBlock {
+class DeadBlock final {
 public:
   /// Copies the block.
   DeadBlock(DeadBlock *&Root, Block *Blk);

clang/lib/AST/Interp/Program.h

@@ -37,7 +37,7 @@ class Context;
 class Record;
 
 /// The program contains and links the bytecode for all functions.
-class Program {
+class Program final {
 public:
   Program(Context &Ctx) : Ctx(Ctx) {}
 

clang/lib/AST/Interp/Record.h

@@ -21,7 +21,7 @@ namespace interp {
 class Program;
 
 /// Structure/Class descriptor.
-class Record {
+class Record final {
 public:
   /// Describes a record field.
   struct Field {