[clang] [CIR][Upstream] Local initialization for ArrayType (PR #132974)

[Andy Kaylor via cfe-commits]

================
@@ -0,0 +1,274 @@
+//===--- CIRGenExprAgg.cpp - Emit CIR Code from Aggregate Expressions -----===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This contains code to emit Aggregate Expr nodes as CIR code.
+//
+//===----------------------------------------------------------------------===//
+
+#include "CIRGenBuilder.h"
+#include "CIRGenFunction.h"
+#include "CIRGenValue.h"
+#include "clang/CIR/Dialect/IR/CIRAttrs.h"
+
+#include "clang/AST/Expr.h"
+#include "clang/AST/StmtVisitor.h"
+#include <cstdint>
+
+using namespace clang;
+using namespace clang::CIRGen;
+
+namespace {
+class AggExprEmitter : public StmtVisitor<AggExprEmitter> {
+
+  CIRGenFunction &cgf;
+  AggValueSlot dest;
+
+  AggValueSlot ensureSlot(mlir::Location loc, QualType t) {
+    if (!dest.isIgnored())
+      return dest;
+    llvm_unreachable("Slot for ignored address NTI");
----------------
andykaylor wrote:

```suggestion
    cgf.cgm.errorNYI(loc, "Slot for ignored address");
```

https://github.com/llvm/llvm-project/pull/132974