[clang][bytecode] Remove unused reportOverflow() (#157225)

Author: tbaederr

clang/lib/AST/ByteCode/InterpState.cpp

@@ -73,12 +73,6 @@ void InterpState::cleanup() {
 
 Frame *InterpState::getCurrentFrame() { return Current; }
 
-bool InterpState::reportOverflow(const Expr *E, const llvm::APSInt &Value) {
-  QualType Type = E->getType();
-  CCEDiag(E, diag::note_constexpr_overflow) << Value << Type;
-  return noteUndefinedBehavior();
-}
-
 void InterpState::deallocate(Block *B) {
   assert(B);
   assert(!B->isDynamic());

clang/lib/AST/ByteCode/InterpState.h

@@ -90,9 +90,6 @@ class InterpState final : public State, public SourceMapper {
   bool hasPriorDiagnostic() override { return Parent.hasPriorDiagnostic(); }
   bool noteSideEffect() override { return Parent.noteSideEffect(); }
 
-  /// Reports overflow and return true if evaluation should continue.
-  bool reportOverflow(const Expr *E, const llvm::APSInt &Value);
-
   /// Deallocates a pointer.
   void deallocate(Block *B);