[clang][bytecode] Fix discarding block expressions (llvm#112185)

Author: tbaederr

clang/lib/AST/ByteCode/Compiler.cpp

@@ -3416,6 +3416,9 @@ bool Compiler<Emitter>::VisitCXXDeleteExpr(const CXXDeleteExpr *E) {
 
 template <class Emitter>
 bool Compiler<Emitter>::VisitBlockExpr(const BlockExpr *E) {
+  if (DiscardResult)
+    return true;
+
   const Function *Func = nullptr;
   if (auto F = Compiler<ByteCodeEmitter>(Ctx, P).compileObjCBlock(E))
     Func = F;

clang/test/SemaCXX/block-packs.cpp

@@ -1,6 +1,9 @@
 // RUN: %clang_cc1 -fblocks -triple x86_64-apple-darwin -fsyntax-only -verify -Wno-unused %s
 // RUN: %clang_cc1 -fblocks -triple x86_64-apple-darwin -fsyntax-only -verify -Wno-unused %s -frecovery-ast -frecovery-ast-type
 
+// RUN: %clang_cc1 -fblocks -triple x86_64-apple-darwin -fsyntax-only -verify -Wno-unused -fexperimental-new-constant-interpreter %s
+// RUN: %clang_cc1 -fblocks -triple x86_64-apple-darwin -fsyntax-only -verify -Wno-unused -frecovery-ast -frecovery-ast-type -fexperimental-new-constant-interpreter %s
+
 template <typename ...Ts>
 void f() {
   ((^ { Ts t; }), ...);