================
@@ -2589,6 +2589,59 @@ SemaOpenACC::ActOnOpenACCAsteriskSizeExpr(SourceLocation 
AsteriskLoc) {
   return BuildOpenACCAsteriskSizeExpr(AsteriskLoc);
 }
 
+/// Loops through a type and generates an appropriate InitListExpr to generate
+/// type initialization.
+static Expr *GenerateReductionInitRecipeExpr(ASTContext &Context,
+                                             SourceRange ExprRange,
+                                             QualType Ty) {
+  Ty = Ty.getCanonicalType();
+  llvm::SmallVector<Expr *> Exprs;
+
+  if (const RecordDecl *RD = Ty->getAsRecordDecl()) {
+    for (auto *F : RD->fields()) {
+      if (Expr *NewExpr =
+              GenerateReductionInitRecipeExpr(Context, ExprRange, 
F->getType()))
+        Exprs.push_back(NewExpr);
+      else
+        return nullptr;
+    }
+  } else if (const ConstantArrayType *AT = Context.getAsConstantArrayType(Ty)) 
{
----------------
andykaylor wrote:

Can we ever get here with a non-constant array type? Is the type always 
constant because it's an initializer?

https://github.com/llvm/llvm-project/pull/156122
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