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

[Andy Kaylor via cfe-commits]

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@@ -412,3 +412,26 @@ mlir::Attribute ConstantEmitter::tryEmitPrivate(const APValue &value,
   }
   llvm_unreachable("Unknown APValue kind");
 }
+
+mlir::Value CIRGenModule::emitNullConstant(QualType t, mlir::Location loc) {
+  if (t->getAs<PointerType>()) {
+    return builder.getNullPtr(getTypes().convertTypeForMem(t), loc);
+  }
+
+  if (getTypes().isZeroInitializable(t))
+    return builder.getNullValue(getTypes().convertTypeForMem(t), loc);
+
+  if (const ConstantArrayType *cat =
+          getASTContext().getAsConstantArrayType(t)) {
+    llvm_unreachable("NYI");
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andykaylor wrote:

erroNYI with more detail

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